CN220314783U

CN220314783U - Self-adaptive power supply equipment and electric automobile

Info

Publication number: CN220314783U
Application number: CN202321620208.4U
Authority: CN
Inventors: 邓吉阳; 许晶; 姚振辉; 袁建州
Original assignee: Fafa Automobile China Co ltd
Current assignee: Fafa Automobile China Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2024-01-09
Anticipated expiration: 2033-06-25

Abstract

The application discloses self-adaptive power supply equipment and an electric automobile, wherein the self-adaptive power supply equipment comprises N battery packs, a charging channel switching module and a charging port which are sequentially connected in series; n is an integer greater than 1; wherein, the charging channel switching module has: the positive charging terminals are connected with the positive poles of the N battery packs in a one-to-one correspondence manner, the negative charging terminals are connected with the negative poles of the N battery packs in a one-to-one correspondence manner, the positive input terminal is connected with the charging port, and the negative input terminal is connected with the charging port; the conduction condition of the positive input end of the charging channel switching module and each positive charging end is adjustable, and the conduction condition of the negative input end of the charging channel switching module and each negative charging end is adjustable. The self-adaptive power supply equipment realizes the function of respectively charging each battery pack in the N battery packs, can fully charge each battery pack in the N battery packs, and improves the charging effect of the self-adaptive power supply equipment.

Description

Self-adaptive power supply equipment and electric automobile

Technical Field

The application relates to the field of charging, in particular to self-adaptive power supply equipment and an electric automobile.

Background

At present, a common power supply device in an electric automobile is to supply power at a voltage of about 400V (such as 350V/400V/500V), and correspondingly, all power consuming loads (such as PTC (Positive Temperature Coefficient, positive temperature coefficient) heaters, air conditioning compressors and driving motors) in the electric automobile are designed to be powered by the voltage of 400V. In order to reduce the charge/discharge current under the condition of high-power rapid charge/discharge, a power supply device for supplying power at a high voltage (such as 800V/900V/1000V) of about 800V has become a development trend of electric vehicles. In the related art, the self-adaptive power supply equipment is designed in a mode of connecting a plurality of battery packs in series and adding a switch circuit, so that the self-adaptive power supply equipment can supply power for equipment with non-upgrading voltage (such as 350V/400V/500V) and equipment with upgrading voltage (such as 800V/900V/1000V), and the development period and cost are effectively reduced.

In the related art, the charging method of the adaptive power supply device is generally performed according to the highest rated voltage of the adaptive power supply device. For example, if the highest rated voltage of the adaptive power supply is 800V, the prior art generally selects a charging voltage of 800V to charge the adaptive power supply.

However, there is a problem in the related art that the charging effect of the adaptive power supply apparatus is poor. For example, when the adaptive power supply apparatus is charged with the highest rated voltage in the related art, there is a case where voltages of a plurality of battery packs inside the adaptive power supply apparatus are not uniform, and after any one of the battery packs in the adaptive power supply apparatus is charged, the charging is stopped, so that each of the plurality of battery packs cannot be charged, and the charging effect of the adaptive power supply apparatus is seriously affected.

Disclosure of Invention

The purpose of the application is to provide self-adaptation power supply unit and electric automobile to solve the relatively poor problem of charging effect of self-adaptation power supply unit among the related art.

In a first aspect, the present application provides an adaptive power supply device, applied to an electric automobile, comprising:

the device comprises N battery packs, a charging channel switching module and a charging port which are sequentially connected in series; n is an integer greater than 1; wherein:

the charging channel switching module is provided with N positive charging ends, N negative charging ends, a positive input end and a negative input end; the positive charging ends of the charging channel switching modules are connected with the positive poles of the N battery packs in a one-to-one correspondence manner, the negative charging ends of the charging channel switching modules are connected with the negative poles of the N battery packs in a one-to-one correspondence manner, the positive input ends of the charging channel switching modules are connected with the charging ports, and the negative input ends of the charging channel switching modules are connected with the charging ports;

The positive input end of the charging channel switching module and the conduction condition of each positive charging end in N positive charging ends of the charging channel switching module are adjustable, and the negative input end of the charging channel switching module and the conduction condition of each negative charging end in N negative charging ends of the charging channel switching module are adjustable.

Optionally, in the adaptive power supply device provided in the embodiment of the present application, the adaptive power supply device further includes a control module, where the control module is connected to the charging channel switching module;

the control module is used for switching the charging port to be communicated with the target battery pack by controlling the conduction condition of each positive charging end in the positive input end of the charging channel switching module and the N positive charging ends of the charging channel switching module and the conduction condition of each negative charging end in the negative input end of the charging channel switching module and the N negative charging ends of the charging channel switching module; charging the target battery pack under the condition that the charging port is communicated with the target battery pack; wherein the target battery pack includes at least one battery pack of the N battery packs.

Optionally, in the adaptive power supply apparatus provided in the embodiment of the present application, the charging port includes at least one of a direct current charging port and an alternating current charging port.

Optionally, in the adaptive power supply device provided in the embodiment of the present application, the charging channel switching module includes a first control switch and a second control switch;

the first control switch is provided with an input end and N output ends, the input end of the first control switch is connected with the charging port, and the N output ends of the first control switch are connected with the anodes of the N battery packs in a one-to-one correspondence manner;

the second control switch is provided with an input end and N output ends, the input end of the second control switch is connected with the charging port, and the N output ends of the second control switch are connected with the cathodes of the N battery packs in a one-to-one correspondence manner.

Optionally, in the adaptive power supply apparatus provided in the embodiments of the present application,

in the case that the adaptive power supply device includes a control module, the control module is connected to the first control switch and the second control switch, respectively;

the control module is used for controlling the conduction condition of the input end of the first control switch and each output end of the N output ends, and controlling the conduction condition of the input end of the second control switch and each output end of the N output ends.

when the charging port comprises a direct current charging port, the input end of the first control switch is connected with the direct current charging port, and the input end of the second control switch is connected with the direct current charging port;

and/or the number of the groups of groups,

in the case where the charging port includes an ac charging port, the adaptive power supply apparatus further includes a first vehicle charger for converting ac to dc; the input end of the first control switch is connected with the alternating current charging port through the first vehicle-mounted charger, and the input end of the second control switch is connected with the alternating current charging port through the first vehicle-mounted charger.

Optionally, in the adaptive power supply apparatus provided in the embodiment of the present application, in a case where the charging port includes an ac charging port, the charging channel switching module is a second vehicle charger with multiple channels output;

the second vehicle-mounted charger is provided with N positive charging ends, N negative charging ends, a positive input end and a negative input end;

the positive charging ends of the second vehicle-mounted charger are correspondingly connected with the positive poles of the N battery packs one by one, the negative charging ends of the second vehicle-mounted charger are correspondingly connected with the negative poles of the N battery packs one by one, the positive input end of the second vehicle-mounted charger is connected with the alternating current charging port, and the negative input end of the second vehicle-mounted charger is connected with the alternating current charging port;

The positive input end of the second vehicle-mounted charger and the conduction condition of each positive charging end in N positive charging ends of the second vehicle-mounted charger are adjustable, and the negative input end of the second vehicle-mounted charger and the conduction condition of each negative charging end in N negative charging ends of the second vehicle-mounted charger are adjustable.

Optionally, in the adaptive power supply apparatus provided in the embodiment of the present application, in a case where the charging port includes an ac charging port, the charging channel switching module includes N third vehicle chargers with single-channel outputs;

n positive charging ends of the third vehicle-mounted chargers are connected with positive poles of the N battery packs in one-to-one correspondence, N negative charging ends of the third vehicle-mounted chargers are connected with negative poles of the N battery packs in one-to-one correspondence, N positive input ends of the third vehicle-mounted chargers are connected with the alternating current charging ports, and N negative input ends of the third vehicle-mounted chargers are connected with the alternating current charging ports.

Optionally, in the adaptive power supply apparatus provided in the embodiments of the present application, the control module is integrated inside a controller of the electric automobile.

In a second aspect, the present application further provides an electric vehicle, including the adaptive power supply device of the first aspect.

In the embodiment of the application, the self-adaptive power supply device comprises N battery packs, a charging channel switching module and a charging port which are sequentially connected in series; n is an integer greater than 1; wherein: the charging channel switching module is provided with N positive charging ends, N negative charging ends, a positive input end and a negative input end; the positive charging ends of the charging channel switching modules are connected with the positive poles of the N battery packs in a one-to-one correspondence manner, the negative charging ends of the charging channel switching modules are connected with the negative poles of the N battery packs in a one-to-one correspondence manner, the positive input ends of the charging channel switching modules are connected with the charging ports, and the negative input ends of the charging channel switching modules are connected with the charging ports; the positive input end of the charging channel switching module and the conduction condition of each positive charging end in N positive charging ends of the charging channel switching module are adjustable, and the negative input end of the charging channel switching module and the conduction condition of each negative charging end in N negative charging ends of the charging channel switching module are adjustable. Therefore, in the charging scene of the self-adaptive power supply equipment, as the positive input end of the charging channel switching module and the conduction condition of each positive charging end in N positive charging ends of the charging channel switching module are adjustable, and the negative input end of the charging channel switching module and the conduction condition of each negative charging end in N negative charging ends of the charging channel switching module are adjustable, a plurality of charging channels which are adjustable can be built between the charging port and each battery pack in the N battery packs, the function of respectively charging each battery pack in the N battery packs is realized, and further, each battery pack in the N battery packs is fully charged under the charging scene due to the influence of different voltages between the battery packs, and the charging effect of the self-adaptive power supply equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the present application or the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an adaptive power supply device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another adaptive power supply device according to an embodiment of the present application;

fig. 3 is a schematic diagram of a specific structure of another adaptive power supply device according to an embodiment of the present application;

fig. 4 is a schematic diagram of a specific structure of another adaptive power supply device according to an embodiment of the present application;

fig. 5 is a schematic diagram of a specific structure of another adaptive power supply device according to an embodiment of the present application;

fig. 6 is a schematic diagram of a specific structure of another adaptive power supply device according to an embodiment of the present application;

fig. 7 is a flowchart of a method for charging an adaptive power supply device according to an embodiment of the present application;

Fig. 8 is a flowchart of another method for charging an adaptive power supply according to an embodiment of the present disclosure;

fig. 9 is a flowchart of another method for charging an adaptive power supply according to an embodiment of the present disclosure;

fig. 10 is a flowchart of another method for charging an adaptive power supply according to an embodiment of the present disclosure;

fig. 11 is a flowchart of another method for charging an adaptive power supply according to an embodiment of the present disclosure;

fig. 12 is a schematic diagram of a specific structure of another adaptive power supply device according to an embodiment of the present application;

fig. 13 is a flowchart of a method for charging the adaptive power supply device shown in fig. 12 according to an embodiment of the present application.

Reference numerals illustrate:

110-battery pack; 1101-first battery pack; 1102-a second battery pack; 120-a charging channel switching module; 1201-a first control switch; 1202-a second control switch; 1203-second vehicle charger; 1204-a third vehicle charger; 130-a charging port; 1301-direct current charging port; 1302-an ac charging port; 140-a control module; 150-a first vehicle charger.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

As one of ordinary skill in the art can appreciate, with the development of technology and the appearance of new scenes, the technical solutions provided in the embodiments of the present application are applicable to similar technical problems.

The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely illustrative of the manner in which the embodiments of the application described herein have been described for objects of the same nature. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As described in the background art, there is a problem in the related art that the charging effect of the adaptive power supply apparatus is poor. When the adaptive power supply device is charged by using the highest rated voltage in the related art, there is a case that voltages of a plurality of battery packs inside the adaptive power supply device are inconsistent, and after any one of the battery packs in the adaptive power supply device is full, charging is stopped, so that each of the plurality of battery packs cannot be full, and the charging effect of the adaptive power supply device is seriously affected.

Based on this, this embodiment of the application provides an adaptive power supply equipment, add the passageway switching module that charges between adaptive power supply equipment's N group battery and charging port, like this, under adaptive power supply equipment's the scene of charging, because the positive input of passageway switching module that charges is adjustable with the conduction condition of each positive charging end in the N positive charging ends of passageway switching module that charges, and the conduction condition of each negative charging end in the negative input of passageway switching module that charges and the N negative charging ends of passageway switching module that charges is adjustable, can build adjustable many charging channel between the group battery in charging port and N group battery, realize carrying out the function of charging to each group battery in N group battery respectively, and then each group battery avoids the influence of voltage difference between the group battery under the scene of charging, can all be full of each group battery in N group battery, adaptive power supply equipment's charging effect has been improved.

In addition, the self-adaptive power supply equipment provided by the embodiment of the application can also carry out intelligent regulation and control by monitoring the charging voltage value and the residual electric quantity of the battery pack, can carry out alternating current and direct current charging on the self-adaptive power supply equipment, is compatible with direct current charging piles with different voltages, and keeps balance among the battery packs in the charging process and at the end of charging.

In addition, in the prior art, for an ac charging scenario, a high-voltage OBC (On board charger) scheme is generally adopted, one end of the high-voltage OBC is connected with an ac charging pile, the other end of the high-voltage OBC is connected with a power supply component such as a battery pack, the development period of the high-voltage OBC is long, and the voltage-resistant performance of the component of the OBC direct current part needs to be upgraded, so that the cost is high. The embodiment of the application directly uses the existing mature low-voltage OBC product, and does not need to develop the OBC outputting high voltage (such as 800V), so that the cost is low, and the development period is short.

In addition, in the prior art, the charging applicability of the high-voltage OBC is poor, the highest voltage after the battery packs are connected in series does not exceed the designed highest charging voltage, for example, the 800V OBC is only suitable for charging the self-adaptive power supply equipment with the highest voltage of 800V, and the self-adaptive power supply equipment with the highest voltage of 1000V cannot be charged. The self-adaptive power supply device provided by the embodiment of the application can be suitable for any high-voltage platform, and each battery pack can be independently charged through switch setting as long as the self-adaptive power supply device is composed of a plurality of battery packs. For example, with the development of technology, when the 1500V platform is applied, the adaptive power supply device and the charging scheme provided by the embodiments of the present application may also be adopted.

The adaptive power supply device and the electric automobile provided by the embodiment of the application are described in detail below by means of specific embodiments and application scenes thereof with reference to the accompanying drawings.

Fig. 1 is a schematic block diagram of an adaptive power supply device according to an embodiment of the present application.

As shown in fig. 1, the adaptive power supply device provided in the embodiment of the present application is applied to an electric automobile, and may include:

n battery packs 110, a charging channel switching module 120, and a charging port 130 connected in series in sequence; n is an integer greater than 1; wherein:

the charging channel switching module 120 has N positive charging terminals 1, N negative charging terminals 2, a positive input terminal 3, and a negative input terminal 4; the positive charging ends 1 of the charging channel switching module 120 are connected with the positive poles of the N battery packs in a one-to-one correspondence manner, the negative charging ends 2 of the charging channel switching module 120 are connected with the negative poles of the N battery packs in a one-to-one correspondence manner, the positive input end 3 of the charging channel switching module 120 is connected with the charging port 130, and the negative input end 4 of the charging channel switching module 120 is connected with the charging port 130;

the conducting condition of the positive input end 3 of the charging channel switching module 120 and each positive charging end 1 of the N positive charging ends of the charging channel switching module 120 is adjustable, and the conducting condition of the negative input end 4 of the charging channel switching module 120 and each negative charging end 2 of the N negative charging ends of the charging channel switching module 120 is adjustable.

As shown in fig. 1, the adaptive power supply apparatus includes N series-connected battery packs 110, wherein 1<n N, N being an integer greater than 1.

In the embodiment of the present application, each battery pack 110 may be used independently, and the rated voltages of different battery packs 110 may be the same or slightly different. Wherein each battery pack 110 may constitute an independent voltage platform, or a combination of at least two battery packs 110 may constitute an independent voltage platform. Each independent voltage platform can be connected with an electric load in a hanging mode, so that the self-adaptive power supply equipment can supply power for equipment with non-upgrading voltage (such as 350V/400V/500V) and equipment with upgrading voltage (such as 800V/900V/1000V), and development period and cost are effectively reduced.

In this embodiment, N series-connected battery packs 110 are connected to the charging port 130 through the charging channel switching module 120, where the conduction condition of each positive charging end 1 in the N positive charging ends of the charging channel switching module 120 and the positive input end 3 of the charging channel switching module 120 is adjustable, and the conduction condition of each negative charging end 2 in the N negative charging ends of the charging channel switching module 120 and the negative input end 4 of the charging channel switching module 120 is adjustable. Furthermore, this application can build adjustable many charging channel between each group battery in mouth and N group battery charges for the mouth that charges can charge for every group battery 110 alone, or, the mouth that charges can charge for the combination of two at least group batteries 110 alone, realizes the function of charging to N group batteries respectively, and then each group battery avoids the influence of voltage difference between the group battery under the scene of charging, can all be full of each group battery in N group battery, has improved self-adaptation power supply unit's effect of charging.

The self-adaptive power supply equipment provided by the embodiment of the application comprises N battery packs, a charging channel switching module and a charging port which are sequentially connected in series; n is an integer greater than 1; wherein: the charging channel switching module is provided with N positive charging ends, N negative charging ends, a positive input end and a negative input end; the positive charging ends of the charging channel switching modules are connected with the positive poles of the N battery packs in a one-to-one correspondence manner, the negative charging ends of the charging channel switching modules are connected with the negative poles of the N battery packs in a one-to-one correspondence manner, the positive input ends of the charging channel switching modules are connected with the charging ports, and the negative input ends of the charging channel switching modules are connected with the charging ports; the positive input end of the charging channel switching module and the conduction condition of each positive charging end in N positive charging ends of the charging channel switching module are adjustable, and the negative input end of the charging channel switching module and the conduction condition of each negative charging end in N negative charging ends of the charging channel switching module are adjustable. Therefore, in the charging scene of the self-adaptive power supply equipment, as the positive input end of the charging channel switching module and the conduction condition of each positive charging end in N positive charging ends of the charging channel switching module are adjustable, and the negative input end of the charging channel switching module and the conduction condition of each negative charging end in N negative charging ends of the charging channel switching module are adjustable, a plurality of charging channels which are adjustable can be built between the charging port and each battery pack in the N battery packs, the function of respectively charging each battery pack in the N battery packs is realized, and further, each battery pack in the N battery packs is fully charged under the charging scene due to the influence of different voltages between the battery packs, and the charging effect of the self-adaptive power supply equipment is improved.

In a specific embodiment, as shown in fig. 2, the adaptive power supply device provided in the embodiment of the present application may further include a control module 140, where the control module 140 is connected to the charging channel switching module 120.

In this embodiment of the present application, the control module 140 may be configured to switch the charging port 130 to be in communication with the target battery pack by controlling the conduction condition of the positive input terminal 3 of the charging channel switching module 120 and each positive charging terminal 1 of the N positive charging terminals of the charging channel switching module 120, and controlling the conduction condition of the negative input terminal 4 of the charging channel switching module 120 and each negative charging terminal 2 of the N negative charging terminals of the charging channel switching module 120; and under the condition that the charging port is communicated with the target battery pack, charging the target battery pack.

Wherein the target battery pack includes at least one battery pack of the N battery packs.

For example, the target battery pack may include any one of N battery packs; alternatively, the target battery pack may be a target assembled battery pack including at least two battery packs of the N battery packs.

For example, in the case that the target battery pack includes any one of N battery packs, the control module 140 may be configured to switch the charging port 130 to be in communication with the i-th battery pack 110 of the N battery packs 110 by controlling the positive input terminal 3 of the charging channel switching module 120 to be in communication with the i-th positive charging terminal 1 of the charging channel switching module 120 and controlling the negative input terminal 4 of the charging channel switching module 120 to be in communication with the i-th negative charging terminal 2 of the charging channel switching module 120; charging the i-th battery pack 110 with the charging port 130 in communication with the i-th battery pack 110; wherein i is a positive integer less than or equal to N.

For another example, in the case that the target battery pack is the target assembled battery pack, the control module 140 may be configured to switch the charging port 130 to be in communication with the target assembled battery pack by controlling the positive input terminal 3 of the charging channel switching module 120 to be in communication with the kth positive charging terminal 1 of the charging channel switching module 120, and controlling the negative input terminal 4 of the charging channel switching module 120 to be in communication with the kth+mth negative charging terminal 2 of the charging channel switching module 120; charging the target assembled battery with the charging port 130 in communication with the target assembled battery; wherein k is a positive integer less than N, and m is a positive integer; the target assembled battery includes k to k+m battery packs of N battery packs 110 connected in series in sequence.

In this way, the control module 140 may purposefully switch the charging port 130 into communication with a target battery pack, where the target battery pack includes at least one battery pack of the N battery packs, so as to facilitate independent charging of the target battery pack in a charging scenario.

In practical applications, the control module 140 may execute the method for charging the adaptive power supply device provided in the embodiments of the present application, where the control module 140 is integrated inside the controller of the electric vehicle. Specifically, the control module 140 of the present application may be integrated inside a controller of an electric vehicle, such as a BMS (Battery Management System ) or a VCU (Vehicle Control Unit, vehicle controller) of the electric vehicle, that is, an original BMS or VCU of the electric vehicle is improved, so that the control module has the functions of the control module, thereby saving circuit space and cost.

In a specific embodiment, as shown in fig. 3, in the adaptive power supply apparatus provided in the embodiment of the present application, the charging port 130 includes at least one of a dc charging port 1301 and an ac charging port 1302.

Wherein the charging voltage provided by the dc charging port 1301 to at least one of the N battery packs is a dc voltage. The charging voltage supplied from the ac charging port 1302 to at least one of the N battery packs is an ac voltage.

The dc voltage at the dc charging port may be 400V, 750V or 900V, etc., and specific numbers of the dc voltage are not limited in this application.

The ac voltage at the ac charging port may be 220V or 380V, or the like, and the specific number of the ac voltage is not limited in the present application.

Therefore, each of the N battery packs can be fully charged in both an alternating current charging scene and a direct current charging scene, and the application range of the charging mode of the self-adaptive power supply equipment is expanded.

While the charging channel switching module 120 is used to switch the charging port 130 to different battery packs 110 to charge each battery pack 110, the specific structure of the charging channel switching module 120 may have different implementations, which is described below by way of example.

In a specific embodiment, as shown in fig. 4, in the adaptive power supply apparatus provided in the embodiment of the present application, the charging channel switching module 120 includes a first control switch 1201 and a second control switch 1202;

the first control switch 1201 has an input end and N output ends, the input end of the first control switch 1201 is connected with the charging port 130, and the N output ends of the first control switch 1201 are connected with the positive electrodes of the N battery packs 110 in a one-to-one correspondence;

the second control switch 1202 has an input end and N output ends, the input end of the second control switch 1202 is connected with the charging port 130, and the N output ends of the second control switch 1202 are connected with the cathodes of the N battery packs 110 in a one-to-one correspondence.

As shown in fig. 4, in the case where the charging channel switching module 120 includes the first control switch 1201 and the second control switch 1202, the input terminal of the first control switch 1201 corresponds to the forward input terminal 3 of the charging channel switching module 120, and the N output terminals of the first control switch 1201 correspond to the N forward charging terminals 1 of the charging channel switching module 120; the input of the second control switch 1202 corresponds to the negative input 4 of the charging channel switching module 120, and the N outputs of the second control switch 1202 correspond to the N negative charging terminals 2 of the charging channel switching module 120.

In practical applications, the first control switch 1201/the second control switch 1202 may be a single pole multi throw switch, a relay assembly, a triode, a transistor, or a logic control switch in an integrated circuit, etc., and the specific switch type of the first control switch/the second control switch is not limited in this application.

In practical applications, the first control switch 1201/the second control switch 1202 may be one control switch with multiple output channels, a combination of multiple control switches, or the like, and the specific structure of the first control switch/the second control switch is not limited in this application.

In this way, the embodiment of the present application uses the first control switch 1201 and the second control switch 1202 to realize the alternate charging of each battery pack 110 in the N battery packs 110, so as to realize that each battery pack in the N battery packs is full, and improve the charging effect of the adaptive power supply device.

And the charging port is switched to be communicated with different battery packs by additionally arranging the control switch, so that the circuit space and the cost are saved, and the development period is short.

As shown in fig. 4, in the case that the adaptive power supply apparatus provided in the embodiment of the present application further includes a control module 140, the control module 140 is connected to the first control switch 1201 and the second control switch 1202, respectively;

The control module 140 is configured to control the conduction between the input terminal of the first control switch 1201 and each of the N output terminals, and control the conduction between the input terminal of the second control switch 1202 and each of the N output terminals.

In this way, the control module 140 may purposefully switch the charging port 130 to communicate with the target battery pack by controlling different conduction paths of the first control switch 1201 and the second control switch 1202, where the target battery pack includes at least one battery pack of the N battery packs, so as to realize independent charging of the target battery pack in a charging scenario.

As shown in fig. 4, in the adaptive power supply apparatus provided in the embodiment of the present application, in the case where the charging port 130 includes a dc charging port 1301, an input terminal of the first control switch 1201 is connected to the dc charging port 1301, and an input terminal of the second control switch 1202 is connected to the dc charging port 1301.

As shown in fig. 4, in the adaptive power supply apparatus provided in the embodiment of the present application, in the case where the charging port 130 includes an ac charging port 1302, the adaptive power supply apparatus further includes a first vehicle charger 150, and the first vehicle charger 150 is configured to convert ac into dc; an input terminal of the first control switch 1201 is connected to the ac charging port 1302 via the first vehicle charger 150, and an input terminal of the second control switch 1202 is connected to the ac charging port 1302 via the first vehicle charger 150.

The first vehicle charger 150 is configured to convert an ac charging voltage at the charging port 130 into a dc voltage to charge each battery pack.

In this way, whether in a direct current charging scenario or an alternating current charging scenario, the first control switch 1201 and the second control switch 1202 may be used in the embodiments of the present application to realize alternate charging of each battery pack 110 in the N battery packs 110, realize that each battery pack in the N battery packs is full, improve the charging effect of the adaptive power supply device, and expand the application range of the charging mode of the adaptive power supply device.

In another specific embodiment, the charging channel switching module 120 may be constructed of other structures. As shown in fig. 5, in the adaptive power supply apparatus provided in the embodiment of the present application, in the case where the charging port 130 includes an ac charging port 1302, the charging channel switching module 120 may be a second vehicle charger 1203 with multiple channels output;

the second vehicle charger 1203 has N positive charging terminals 1, N negative charging terminals 2, a positive input terminal 3, and a negative input terminal 4;

n positive charging ends 1 of the second vehicle charger 1203 are connected with positive poles of the N battery packs 110 in one-to-one correspondence, N negative charging ends 2 of the second vehicle charger 1203 are connected with negative poles of the N battery packs 110 in one-to-one correspondence, a positive input end 3 of the second vehicle charger 1203 is connected with the ac charging port 1302, and a negative input end 4 of the second vehicle charger 1203 is connected with the ac charging port 1302;

The conducting condition of each positive charging terminal 1 of the positive input terminal 3 of the second vehicle charger 1203 and each negative charging terminal 2 of the N positive charging terminals of the second vehicle charger 1203 is adjustable, and the conducting condition of each negative input terminal 4 of the second vehicle charger 1203 and each negative charging terminal 2 of the N negative charging terminals of the second vehicle charger 1203 is adjustable.

As shown in fig. 5, in the case that the charging channel switching module 120 is the second vehicle charger 1203 with multi-channel output, the forward input terminal of the second vehicle charger 1203 corresponds to the forward input terminal 3 of the charging channel switching module 120, and the N forward charging terminals of the second vehicle charger 1203 correspond to the N forward charging terminals 1 of the charging channel switching module 120; the negative input of the second vehicle charger 1203 corresponds to the negative input 4 of the charging tunnel switching module 120, and the N negative charging terminals of the second vehicle charger 1203 correspond to the N negative charging terminals 2 of the charging tunnel switching module 120.

In the embodiment of the present application, the second vehicle charger 1203 has a plurality of output channels, and each output channel of the plurality of output channels may be used to independently charge each of the N battery packs 110. The second vehicle charger 1203 may be configured to convert an ac charging voltage into a dc voltage for charging each of the N battery packs 110.

In this way, in the ac charging scenario, the embodiment of the present application may use the second vehicle charger 1203 with multiple channels of output to implement that each of the N battery packs is fully charged, thereby improving the charging effect of the adaptive power supply device.

It is noted that for the ac charging scenario of an adaptive power supply, the prior art generally selects the OBC according to the highest voltage of the adaptive power supply. For example, if the highest voltage of the adaptive power supply device is 800V, then a high voltage OBC adapted to the 800V voltage is selected for ac charging. The main problems of this charging mode are: in order to boost the current mature OBC from 400V to 800V, the voltage withstand performance of the direct current output part of the OBC needs to be improved by 1 time, namely the voltage withstand requirements of related electronic components and materials are greatly increased. After redesign, various verification tests and experiments are required, generally more than 2 years are required, and the development period is long. With few alternative suppliers, resulting in increased costs. And secondly, the highest voltage (for example, 800V) of the used high-voltage OBC charges the self-adaptive power supply equipment, when the voltages of all battery packs in the self-adaptive power supply equipment are inconsistent, after any one battery pack is full, the charging is stopped, and each battery pack cannot be full, so that the charging effect is seriously influenced.

In the embodiment of the application, the second vehicle charger 1203 with multi-channel output does not need to be redesigned according to the voltage resistance change of the component, and the currently mature OBC (e.g. 400V) can still be used, which still has advantages in terms of cost. And each of the N battery packs can be fully charged, so that the charging effect of the self-adaptive power supply equipment is improved.

In addition, compared with the scheme of adding the control switch shown in fig. 4, the second vehicle charger 1203 with multi-channel output provided by the scheme (corresponding to fig. 5) redesigns a plurality of output channels based on the existing OBC, and the development period is longer.

In practical applications, the charging power of the second vehicle charger 1203 that is output in multiple channels is low, and it is difficult to improve the charging efficiency. Based on this, in order to increase the charging power, the charging channel switching module 120 may be further configured by a plurality of vehicle-mounted chargers, and the embodiment of the present application may further use the plurality of vehicle-mounted chargers to perform ac charging on the adaptive power supply apparatus, which is illustrated below.

In a specific embodiment, as shown in fig. 6, in the adaptive power supply apparatus provided in the embodiment of the present application, in a case where the charging port 130 includes an ac charging port 1302, the charging channel switching module 120 includes N third vehicle chargers 1204 with single channel outputs;

The positive charging ends 1 of the N third vehicle-mounted chargers 1204 are connected with the positive poles of the N battery packs 110 in a one-to-one correspondence manner, the negative charging ends 2 of the N third vehicle-mounted chargers 1204 are connected with the negative poles of the N battery packs 110 in a one-to-one correspondence manner, the positive input ends 3 of the N third vehicle-mounted chargers 1204 are connected with the alternating current charging ports 1302, and the negative input ends 4 of the N third vehicle-mounted chargers 1204 are connected with the alternating current charging ports 1302.

As shown in fig. 6, in the case where the charging tunnel switching module 120 includes N single-channel output third vehicle chargers 1204, the forward input terminals of the third vehicle chargers 1204 correspond to the forward input terminals 3 of the charging tunnel switching module 120, and the forward charging terminals of the N third vehicle chargers 1204 correspond to the N forward charging terminals 1 of the charging tunnel switching module 120; the negative input terminals of the third vehicle-mounted charger 1204 correspond to the negative input terminals 4 of the charging path switching module 120, and the negative charging terminals of the N third vehicle-mounted chargers 1204 correspond to the N negative charging terminals 2 of the charging path switching module 120.

In the case where the adaptive power supply apparatus provided in this embodiment of the present application further includes a control module, the N third vehicle chargers 1204 with single-channel output may be respectively connected with the control module (not shown in fig. 6), so that the control module 140 may selectively switch the charging port 130 to communicate with the target battery pack by controlling each of the N third vehicle chargers 1204 to independently operate, where the target battery pack includes at least one battery pack of the N battery packs, so as to implement independent charging of the target battery pack in a charging scenario.

As shown in fig. 6, each third on-vehicle charger 1204 is separately controlled for charging each battery pack, and each third on-vehicle charger 1204 can be separately operated or simultaneously operated, so that when the available power is high, a plurality of third on-vehicle chargers 1204 are simultaneously used for charging, the charging power can be increased, and the charging time of the adaptive power supply device can be shortened.

However, in practical application, compared with the solution of adding the control switch shown in fig. 4, the cost is additionally increased by the N third vehicle chargers provided in the present solution (corresponding to fig. 6).

Of course, in practical application, the charging channel switching module 120 may also be configured by other structures, which is not specifically limited in this application.

Based on the same conception of the adaptive power supply device provided by the embodiment of the application, the application also provides a method for charging any one of the adaptive power supply devices. The present application provides a method for charging any of the above adaptive power supply devices, which may be applied to an electric vehicle, and is described below by way of example.

Fig. 7 is a flowchart of a method for charging an adaptive power supply device according to an embodiment of the present application.

As shown in fig. 7, an embodiment of the present application provides a method for charging an adaptive power supply device, which may include:

step 710: the method comprises the steps of switching a charging port to be communicated with a target battery pack by controlling the conduction condition of a positive input end of a charging channel switching module and each of N positive charging ends of the charging channel switching module and the conduction condition of a negative input end of the charging channel switching module and each of N negative charging ends of the charging channel switching module;

step 720: and charging the target battery pack under the condition that the charging port is communicated with the target battery pack, wherein the target battery pack comprises at least one battery pack of N battery packs.

In this embodiment of the present application, the charging port 130 may be selectively switched to be in communication with each target battery pack, so as to realize independent charging of each target battery pack in a charging scenario.

The specific embodiments may refer to any of the above embodiments, and are not described herein.

According to the method for charging the self-adaptive power supply device, the charging port is switched to be communicated with the target battery pack by controlling the conduction condition of each positive charging end in the positive input end of the charging channel switching module and the N positive charging ends of the charging channel switching module and the conduction condition of each negative charging end in the negative input end of the charging channel switching module and the N negative charging ends of the charging channel switching module; under the condition that the charging port is communicated with the target battery pack, the target battery pack is charged, wherein the target battery pack comprises at least one battery pack of N battery packs, so that the charging port can be switched to be communicated with the target battery pack, and a plurality of adjustable charging channels are built between the charging port and each battery pack of the N battery packs, so that each battery pack 110 can be charged independently through the charging port, or at least two battery packs 110 can be charged independently through the charging port, the function of charging each battery pack of the N battery packs is achieved, the influence of voltage difference between the battery packs is avoided through each battery pack under a charging scene, each battery pack of the N battery packs can be fully charged, and the charging effect of the self-adaptive power supply equipment is improved.

In a specific embodiment, the target battery pack includes any one of the N battery packs to facilitate separate charging of each of the N battery packs. The following is an example.

As shown in fig. 8, an embodiment of the present application provides a method for charging an adaptive power supply device, which may include:

step 810: the charging port is switched to be communicated with the ith battery pack in the N battery packs by controlling the positive input end of the charging channel switching module to be communicated with the ith positive charging end of the charging channel switching module and controlling the negative input end of the charging channel switching module to be communicated with the ith negative charging end of the charging channel switching module;

step 820: charging the ith battery pack under the condition that the charging port is communicated with the ith battery pack; wherein i is a positive integer less than or equal to N.

Where step 810 may be a sub-step of step 710 and step 820 may be a sub-step of step 720.

In this embodiment of the present application, the charging port 130 may be switched to communicate with each of the N battery packs in a targeted manner, so that, in a charging scenario, independent charging of each target battery pack is achieved, each of the N battery packs is guaranteed to be full, and a charging effect of the adaptive power supply device is improved.

In another specific embodiment, the target battery pack may be a target assembled battery pack including at least two battery packs of the N battery packs so as to charge at least two battery packs of the N battery packs simultaneously. The following is an example.

As shown in fig. 9, an embodiment of the present application provides a method for charging an adaptive power supply device, which may include:

step 910: the charging port is switched to be communicated with the target combined battery pack by controlling the positive input end of the charging channel switching module to be communicated with the kth positive charging end of the charging channel switching module and controlling the negative input end of the charging channel switching module to be communicated with the kth plus m negative charging ends of the charging channel switching module; wherein k is a positive integer less than N, and m is a positive integer;

step 920: under the condition that the charging port is communicated with the target combined battery pack, charging the target combined battery pack; the target combined battery pack comprises a kth battery pack to a kth+m battery pack which are sequentially connected in series in the N battery packs.

Wherein step 910 may be a sub-step of step 710 and step 920 may be a sub-step of step 720.

In this embodiment of the present application, the charging port 130 may be switched to be in communication with at least two battery packs of the N battery packs in a targeted manner, so that a plurality of battery packs are charged simultaneously in a charging scenario, thereby improving charging efficiency and shortening charging time.

In addition, in practical application, in the embodiment of the application, in the process of charging each battery pack of N battery packs respectively, there is the problem that the voltage of each battery pack is inconsistent and leads to the unbalanced voltage of the battery pack, in order to solve the unbalanced voltage problem in the process of charging each battery pack respectively, the embodiment of the application can adopt the intelligent control strategy of each battery pack linkage, through monitoring the difference value of the State-of-Charge (SOC, SOC can represent the residual electric quantity of battery) of different battery packs, the intelligent switching charging channel is in order to make each battery pack Charge in turn, guarantee the voltage balance between each battery pack in the charging process and when charging is finished. The following is an example.

In a specific embodiment, as shown in fig. 10, in the method for charging an adaptive power supply device provided in the embodiment of the present application, in step 720, when the charging port is in communication with the target battery pack, charging the target battery pack may include:

Step 1010: determining a voltage type of the charging voltage at the charging port; the voltage type includes at least one of an alternating current voltage and a direct current voltage;

wherein AC represents an alternating voltage and DC represents a direct voltage in fig. 10;

step 1020: determining whether the charging voltage at the charging port is less than a first threshold value if the charging voltage is a direct current voltage;

wherein, a charging voltage less than the first threshold value may be understood as a low-voltage direct-current charging mode, and a charging voltage greater than or equal to the first threshold value may be understood as a high-voltage direct-current charging mode. For example, the first threshold is 500V, and the charging voltage is 400V corresponds to the low-voltage direct-current charging mode; the case where the charging voltage is 750V or 900V corresponds to the high voltage direct current charging mode. Of course, the first threshold may also be other values, which may be set according to actual requirements, and this application is not limited thereto.

Wherein, in the case that the charging voltage at the charging port is an alternating current voltage, or in the case that the charging voltage at the charging port is a direct current voltage and the charging voltage is less than a first threshold value, the following steps are performed:

step 1030: determining a first target battery pack from the N battery packs, wherein the first target battery pack is the battery pack with the lowest residual electric quantity in the N battery packs;

The remaining capacity of the battery pack may be represented by SOC, which increases when the battery pack is charged.

Step 1040: under the condition that a charging port is switched to be communicated with a first target battery pack, charging the first target battery pack until the difference value between the residual electric quantity of the first target battery pack and the residual electric quantity of a second target battery pack is a second threshold value; the second target battery pack is any battery pack except the first target battery pack in N battery packs;

the second threshold value can reflect the voltage balance degree of different battery packs, and when the difference value of the residual electric quantity of the two battery packs is smaller than the second threshold value, the voltages of the two battery packs are balanced; when the difference of the residual amounts of the two battery packs is greater than the second threshold value, the voltages of the two battery packs are unbalanced.

The value of the second threshold may be set according to actual needs, for example, 4%, 5% or 6%, etc., which is not limited in this application.

Step 1050: under the condition that the charging port is switched to be communicated with the second target battery pack, charging the second target battery pack until the difference value between the residual electric quantity of the second target battery pack and the residual electric quantity of the third target battery pack is a second threshold value; the third target battery pack is any battery pack except the second target battery pack in the N battery packs;

Step 1060: under the condition that the charging port is switched to be communicated with the third target battery pack, the third target battery pack is charged, so that the residual capacity of the third target battery pack is improved;

step 1070: and charging each battery pack in turn based on the residual electric quantity of each battery pack in the N battery packs until the residual electric quantity of each battery pack reaches a third threshold value.

The third threshold may reflect the final amount of electricity after charging, for example, the remaining amount of electricity of the battery pack is expressed in percentage, and the third threshold may be 100% (corresponding to filling the battery pack), or 99%, etc., which may be set according to actual requirements.

In this embodiment of the present application, in the ac voltage charging mode, or in the low voltage dc charging mode, the present application adopts a first intelligent control strategy (corresponding to steps 1030 to 1070), and the charging channels are intelligently switched to make each battery pack charge in turn: firstly, charging a first target battery pack with the lowest residual electric quantity; when the difference value of the residual electric quantity between the first target battery pack and any other battery pack reaches a second threshold value, switching to the other battery pack to charge until the residual electric quantity exceeds the second threshold value compared with the other battery packs; and repeating the flow, and charging each battery pack in turn until the residual electric quantity of each battery pack reaches a third threshold value.

In this way, in the alternating-current voltage charging mode or in the low-voltage direct-current charging mode, the difference value of the residual electric quantity of any two battery packs is compared with the second threshold value to charge each battery pack in turn, so that voltage balance among the battery packs in the charging process of each battery pack and at the end of charging is ensured.

In a specific embodiment, as shown in fig. 11, in a case where the charging voltage is a dc voltage and the charging voltage is greater than or equal to a first threshold, a method for charging an adaptive power supply device provided in the embodiment of the present application may further include:

step 1110: under the condition that the charging voltage is direct current voltage and is greater than or equal to a first threshold value, determining a first target battery pack and a fourth target battery pack from N battery packs; the first target battery pack is the battery pack with the lowest residual electric quantity in the N battery packs, and the fourth target battery pack is the battery pack with the highest residual electric quantity in the N battery packs;

step 1120: determining whether a difference between the remaining amounts of the first and fourth target battery packs is less than a second threshold;

in the case where the difference between the remaining amounts of the first target battery group and the fourth target battery group is smaller than the second threshold value, the following steps are performed:

Step 1130: under the condition that the charging port is switched to be communicated with all the N battery packs, the N battery packs are charged simultaneously until the residual electric quantity of the fourth target battery pack reaches a third threshold value;

step 1140: under the condition that the charging port is switched to be communicated with the fifth target battery pack, charging the fifth target battery pack until the residual electric quantity of each battery pack in the N battery packs reaches a third threshold value; the fifth target battery pack is each battery pack except the fourth target battery pack in the N battery packs;

alternatively, in the case where the difference between the remaining amounts of the first target battery group and the fourth target battery group is greater than or equal to the second threshold value, the following steps are performed:

step 1150: under the condition that the charging port is switched to be communicated with the fifth target battery pack, the fifth target battery pack is charged based on the residual electric quantity of the fourth target battery pack until the residual electric quantity of each battery pack in the N battery packs is equal;

step 1160: and under the condition that the charging port is switched to be communicated with all the N battery packs, the N battery packs are charged simultaneously until the residual electric quantity of each battery pack in the N battery packs reaches a third threshold value.

Wherein step 1110 may be performed after step 1020.

In this embodiment of the present application, in the hvdc charging mode, the present application adopts a second intelligent control strategy (corresponding to steps 1110 to 1160), and intelligently switches the charging channels to make each battery pack charge in turn:

it is determined whether a difference in the remaining amounts of any two battery packs (for example, a difference in the remaining amounts expressed by Δsoc) is smaller than a second threshold value.

Under the condition that the delta SOC is smaller than a second threshold value, switching to high-voltage direct-current charging firstly, and simultaneously charging N battery packs until the residual electric quantity of one battery pack reaches a third threshold value; and switching to low-voltage direct current charging, and respectively charging other target battery packs until the residual electric quantity of the N battery packs reaches a third threshold value.

Under the condition that the delta SOC is larger than or equal to a second threshold value, switching to low-voltage direct-current charging firstly, and respectively charging other battery packs except the battery pack with the highest residual electric quantity until the residual electric quantity of the N battery packs is consistent; and then switching to the HVDC charging, and simultaneously charging the N battery packs until the residual electric quantity of the N battery packs reaches a third threshold value.

In this way, in the high-voltage direct-current charging mode, by comparing the difference value delta SOC of the residual electric quantity of any two battery packs with the second threshold value, the low-voltage direct-current charging is performed for a period of time before the high-voltage direct-current charging or after the high-voltage direct-current charging, and the voltage balance among the battery packs in the charging process and at the end of the charging of each battery pack is ensured.

In practical application, taking n=2 as an example, the adaptive power supply device shown in fig. 12 may include 2 battery packs (for example, a first battery pack 1101 and a second battery pack 1102) connected in series in sequence, the first control switch 1201 is specifically a first single pole double throw switch, and the second control switch 1202 is specifically a second single pole double throw switch, as shown in fig. 13, a method for charging the adaptive power supply device shown in fig. 12 provided in the embodiment of the present application may include the following four charging modes:

(1) When the external charging gun is detected to be inserted, the charging voltage is firstly determined to be the alternating current voltage or the direct current voltage when the charging is started, if the charging voltage is the alternating current voltage, the charging mode can be directly entered without judging the difference value of the residual electric quantity among the battery packs, and the battery packs with lower SOC are started to charge:

a) The first single-pole double-throw switch and the second single-pole double-throw switch are controlled to be switched to the set positions, so that the charging port is connected with the positive electrode and the negative electrode of the battery pack with lower SOC, and the battery pack with lower SOC is charged until the SOC exceeds more than 5% of the other battery packs; (for example, assuming that the SOC of the first battery 1101 is low, connecting the first single-pole double-throw switch 1201 and the second single-pole double-throw switch 1202 to the upper position charges the first battery 1101);

b) At this time, the first single-pole double-throw switch and the second single-pole double-throw switch are controlled to be switched to the other set position, so that the charging port is connected with the positive electrode and the negative electrode of the other battery pack, and the SOC of the battery pack is charged to more than 5% of the high-voltage battery pack. (e.g., connecting first single pole double throw switch 1201 with second single pole double throw switch 1202 to the lower position, charging second battery pack 1102 until its SOC exceeds 5% of first battery pack 1101);

c) And repeating the two steps until each battery pack reaches the set SOC value, and ending the alternating-current charging.

(2) When the external charging pile is detected to be in direct current charging, the voltage of the direct current charging pile is judged. If the battery is charged by direct current at low voltage (such as 400-500V), the charging method is consistent with the alternating current charging, and the battery pack with low SOC is charged until the SOC exceeds more than 5% of other battery packs; then charging the other battery packs until the SOC exceeds more than 5% of the other battery packs; and repeating the steps until each battery pack reaches the set SOC value, and ending the direct current charging.

(3) When detecting that the external charging pile is direct-current charging, if the external charging pile is direct-current high-voltage (such as 800-1000V) charging, firstly judging the SOC difference value between the battery packs, if delta SOC of the two battery packs is more than 5%, the two battery packs are seriously unbalanced, in order to avoid the charge multiplying power difference caused by unbalance, reduce heating and shorten charging time, the scheme can be switched to low-voltage direct-current charging firstly, and charge the lower SOC battery pack until the SOC of the lower SOC battery pack is equal to that of the higher SOC battery pack. And then the voltage balance among the battery packs is realized during the low-voltage direct current charging, so that the balance is not needed after the high-voltage direct current charging under the condition.

For example, in fig. 12, when it is detected that the SOC of the second battery pack 1102 is 5% or more greater than the SOC of the first battery pack 1101, the first single-pole double-throw switch 1201 and the second single-pole double-throw switch 1202 are first controlled to be connected to the upper position, and the first battery pack 1101 is charged until the SOC of the first battery pack 1101 is equal to the SOC of the second battery pack 1102; then, the first single pole double throw switch 1201 is controlled to be connected to the upper position, the second single pole double throw switch 1202 is controlled to be connected to the lower position, and the charging is switched to the high voltage direct current charging, and the first battery 1101 and the second battery 1102 are charged at the same time until the charging is finished after the first battery 1101 and the second battery 1102 are charged to the set SOC value.

(4) When it is detected that the external is dc charging and the SOC difference between any two battery packs is less than 5%, in order to increase the charging power (power=voltage×current, and generally the maximum current is fixed), the charging may be performed directly using the high voltage dc, and the first battery pack 1101 and the second battery pack 1102 may be charged at the same time until the highest voltage battery pack is charged to the set SOC value. The low-voltage direct current charge is then switched until the other battery packs are charged to the set SOC value.

For example, in fig. 12, in the case where the difference between the SOC of the first battery pack 1101 and the SOC of the second battery pack 1102 is equal to or less than 5%, the first single-pole double-throw switch 1201 is controlled to be connected to the upper position, and the second single-pole double-throw switch 1202 is controlled to be connected to the lower position, and the high-voltage direct-current charging (simultaneous charging of the first battery pack 1101 and the second battery pack 1102) is started. Assuming that the SOC of the second battery 1102 is high, the second battery 1102 reaches the set SOC value first; at this time, the first single-pole double-throw switch 1201 and the second single-pole double-throw switch 1202 are adjusted to be connected to the upper portion, and the first battery pack 1101 is charged alone to reach the set SOC value.

It can be appreciated that in the prior art, a plurality of series-connected battery packs are charged with a high voltage (e.g., 800-1000V), and if a voltage difference exists between the battery packs, each battery pack cannot be fully charged. The self-adaptive power supply equipment provided by the embodiment of the application can independently charge each battery pack, is not affected by different voltages of the battery packs, can fully charge each battery pack or set SOC values, and improves the charging effect.

In addition, the self-adaptive power supply equipment provided by the embodiment of the application carries out intelligent regulation and control on the battery packs in each charging stage by monitoring the charging voltage and the SOC of the battery packs, can carry out alternating current and direct current charging on the self-adaptive power supply equipment, is compatible with direct current charging piles of different voltages, and keeps balance among the battery packs in the charging process and at the end of charging.

Based on the same conception of the adaptive power supply device provided by the embodiment of the application, the application also provides an electric automobile, which comprises any one of the adaptive power supply devices.

The description of the electric automobile provided in the present application refers to the embodiment of the adaptive power supply device, and the description is omitted herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An adaptive power supply device, characterized by being applied to an electric automobile, comprising: the device comprises N battery packs, a charging channel switching module and a charging port which are sequentially connected in series; n is an integer greater than 1; wherein:

2. The adaptive power supply apparatus of claim 1, further comprising a control module connected with the charging channel switching module;

3. The adaptive power supply of claim 1, wherein the charging port comprises at least one of a dc charging port and an ac charging port.

4. The adaptive power supply apparatus of claim 1, wherein the charging channel switching module comprises a first control switch and a second control switch;

5. The adaptive power supply apparatus of claim 4,

6. The adaptive power supply apparatus of claim 4,

and/or the number of the groups of groups,

7. The adaptive power supply apparatus of claim 1, wherein the charging channel switching module is a multichannel output second vehicle charger in the case where the charging port includes an ac charging port;

8. The adaptive power supply apparatus of claim 1, wherein, in the case where the charging port comprises an ac charging port, the charging channel switching module comprises a third vehicle charger of N single channel outputs;

9. The adaptive power supply of claim 2, wherein the control module is integrated within a controller of the electric vehicle.

10. An electric vehicle comprising an adaptive power supply device according to any one of claims 1-9.