CN117890829A - Detection device, power supply method and power supply device of energy storage transformer - Google Patents

Abstract

The present disclosure relates to a detection device, a power supply method, and a power supply device for an energy storage transformer, the detection device for a transformer includes: the energy storage modules comprise a first switch and a first battery, a first fixed end of the first switch is connected with a first end of the first battery, and a second fixed end of the first switch is connected with a second end of the first battery; the second end of the first battery in the former energy storage module is connected with the movable end of the first switch in the latter energy storage module; the first control circuit is connected with the plurality of energy storage modules; the first end of the conversion circuit is connected with the movable end of the first switch of the first energy storage module and the second end of the first battery of the last energy storage module, and the second end of the conversion circuit is connected with the energy storage transformer; and the second control circuit is respectively connected with the first control circuit and the conversion circuit.

Description

Detection device, power supply method and power supply device of energy storage transformer

Technical Field

The embodiment of the disclosure relates to the technical field of batteries, and more particularly relates to a detection device, a power supply method and a power supply device of an energy storage transformer.

Background

The storage battery is generally used as a direct-current standby power supply in a transformer substation and is in a floating charge state in a normal state, namely, after the storage battery is fully charged, the storage battery is continuously charged by using small current, the internal resistance of the storage battery is increased and the capacity of the storage battery is reduced along with the increase of the running time, meanwhile, the inconsistency of the storage battery pack is more obvious, and the charging and discharging capacities of the storage battery are sharply reduced. At present, a control circuit is generally configured to control the conversion circuit to convert the direct current output by the storage battery, so that the converted direct current can be output to the energy storage transformer to provide electric energy for users, but the direct current input to the energy storage transformer is unstable due to certain difference of battery electric quantity or voltage of each storage battery.

Disclosure of Invention

It is an object of embodiments of the present disclosure to provide a new solution for detection of energy storage transformers.

According to a first aspect of the present disclosure, there is provided a detection device of an energy storage transformer, comprising:

the energy storage modules comprise a first switch and a first battery, a first fixed end of the first switch is connected with a first end of the first battery, and a second fixed end of the first switch is connected with a second end of the first battery; the second end of the first battery in the former energy storage module is connected with the movable end of the first switch in the latter energy storage module;

The first control circuit is connected with the energy storage modules to detect battery parameters of the energy storage modules;

the first end of the conversion circuit is connected with the movable end of the first switch of the first energy storage module and the second end of the first battery of the last energy storage module, and the second end of the conversion circuit is connected with the energy storage transformer; and

the second control circuit is respectively connected with the first control circuit and the conversion circuit and is used for controlling the conversion circuit to convert the first direct current output by the energy storage modules into second direct current and output the second direct current to the energy storage transformer;

wherein the second control circuit is configured to: responding to a power supply request output by a user, acquiring battery parameters of a plurality of energy storage modules through the first control circuit, determining a target energy storage module with the battery parameters smaller than or equal to a first set threshold and within a set difference value with the first set threshold, and outputting a first control signal to the first control circuit, so that the first control circuit controls a first switch corresponding to the target energy storage module to be in a first state, and the target energy storage modules are connected in series; the second control circuit is further configured to determine a target conversion efficiency of the conversion circuit according to the battery parameter of the target energy storage module, and control the conversion circuit to convert the first direct current into the second direct current at the target conversion efficiency, when the first control circuit outputs first feedback information about completion of turning on of the first switch.

Optionally, the first control circuit includes control chip, analog signal receiving module and communication module, control chip respectively with analog signal receiving module with communication module is connected, control chip passes through analog signal receiving module detects a plurality of energy storage module's battery parameter, control chip passes through communication module with second control module connects.

Optionally, the first control circuit further includes a converter, a second battery and a second switch, a first end of the first battery of the energy storage circuit is connected with a first end of the second switch, a second end of the second switch and a second end of the second battery are respectively connected with the converter, the converter is connected with the second battery, and the second battery is connected with the control chip.

Optionally, the power generation device further comprises a power generation mechanism, the power generation mechanism is connected with the movable end of the first switch of the first energy storage module and the second end of the first battery of the last energy storage module, and the power generation mechanism is controlled by the second control circuit.

According to a second aspect of the present disclosure, there is also provided a power supply method, the execution subject of which is the second control circuit as described in the first aspect, the method including:

Responding to a power supply request output by a user, and acquiring battery parameters of a plurality of energy storage modules through the first control circuit;

determining a target energy storage module with a battery parameter smaller than or equal to a first set threshold and within a set difference value with the first set threshold;

outputting a first control signal to the first control circuit, so that the first control circuit controls a control switch corresponding to the target energy storage module to be in a first state, and the target energy storage modules are connected in series;

and under the condition that the first control circuit outputs feedback information about the completion of the opening of the switch, determining the target conversion efficiency of the conversion circuit according to the battery parameter of the target energy storage module, and controlling the conversion circuit to convert the first direct current into the second direct current with the target conversion efficiency.

Optionally, the battery parameter is battery power or voltage; the first set threshold is the highest value of the battery electric quantity or voltage in the energy storage modules; and the value of the battery electric quantity or the voltage of the target energy storage module is larger than or equal to the highest value of the battery electric quantity or the voltage minus a set difference value.

Optionally, after the determining the target energy storage module with the battery parameter being less than or equal to the first set threshold and within the set difference value from the first set threshold, the method further includes:

Under the condition that the target energy storage module is not stored, determining an alternative energy storage module with the battery parameter higher than a second set threshold value;

outputting a second control signal to the first control circuit, so that the first control circuit controls the control switch corresponding to the alternative energy storage module to be in a first state;

and determining alternative conversion efficiency of the conversion circuit and controlling the conversion circuit to convert the first direct current into the second direct current at the alternative conversion efficiency under the condition that the first control circuit outputs first feedback information about the completion of opening of the switch.

Optionally, the power supply request is a request for starting power supply at a first set time node;

after the determining that the battery parameter is less than or equal to a first set threshold and is within a set difference from the first set threshold, the method further includes:

determining the minimum value of the voltage or the electric quantity in the target energy storage module and the relative difference value between the value of the voltage or the electric quantity corresponding to the target energy storage module and the minimum value according to the battery voltage or the electric quantity of the target energy storage module;

setting an equalization signal according to a first time length between the current time and the first set time node, the relative difference value and a preset equalization sequence;

And outputting the equalization signal to the first control circuit, so that the first control circuit responds to the equalization signal to control a second switch of the equalization energy storage module with the relative difference value larger than 0 in the target energy storage module to be closed, and the second battery is powered through a converter for the first time period.

Optionally, the method further comprises:

acquiring battery parameters of a plurality of energy storage modules through the first control circuit;

under the condition that the battery parameters of the plurality of energy storage modules are lower than a third set threshold value, determining the residual difference values of the battery parameters of the plurality of energy storage modules;

determining at least one group of charging energy storage modules with the residual difference value within a set range in the plurality of energy storage modules;

setting a charging signal according to the at least one group of charging energy storage modules;

outputting the charging signal to the first control signal, so that the first control signal responds to the charging signal and sequentially controls the first switch corresponding to one group of the at least one group of the charging energy storage modules to be in a first state, so that the first batteries corresponding to one group of the at least one group of the charging energy storage modules are connected in series;

And under the condition that the first control circuit outputs second feedback information about the completion of the opening of the switch, controlling the power generation mechanism to charge a first battery corresponding to one group of the at least one group of the charging energy storage modules.

According to a third aspect of the present disclosure, there is also provided a power supply apparatus including a memory for storing a computer program and a processor; the processor is configured to execute the computer program to implement the method according to the first aspect of the present disclosure.

According to a fourth aspect of the present disclosure, there is also provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method according to the first aspect of the present disclosure.

The power supply control circuit has the advantages that the second control circuit can respond to a power supply request output by a user, battery parameters of a plurality of energy storage modules can be obtained through the first control circuit, the target energy storage modules are determined according to the battery parameters, the first switch corresponding to the target energy storage modules is controlled to be in a first state, the target energy storage modules can be connected in series, so that first direct current is output to the conversion circuit, the second control circuit sets corresponding target conversion efficiency according to the battery parameters of the target energy storage modules, the conversion circuit converts the first direct current into second direct current according to the target conversion efficiency, and the direct current input to the energy storage transformer is stable.

Other features of the disclosed embodiments and their advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the embodiments of the disclosure.

Fig. 1 is a schematic diagram of a constitution of a detection device to which an energy storage transformer according to an embodiment can be applied;

FIG. 2 is a flow diagram of a power supply method according to one embodiment;

FIG. 3 is a block schematic diagram of a power supply according to one embodiment;

fig. 4 is a schematic diagram of a hardware configuration of a power supply device according to an embodiment.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

< System example >

Fig. 1 is a schematic diagram of a constitution of a detection device to which an energy storage transformer according to an embodiment can be applied. As shown in fig. 1, the system includes:

the energy storage modules comprise a first switch K1 and a first battery 3, wherein a first fixed end of the first switch K1 is connected with a first end of the first battery 3, and a second fixed end of the first switch K1 is connected with a second end of the first battery 3; the second end of the first battery 3 in the former energy storage module is connected with the movable end of the first switch K1 in the latter energy storage module;

The first control circuit 1 is connected with the plurality of energy storage modules to detect battery parameters of the plurality of energy storage modules;

the first end of the conversion circuit 5 is connected with the movable end of the first switch K1 of the first energy storage module and the second end of the first battery 3 of the last energy storage module, and the second end of the conversion circuit 5 is connected with the energy storage transformer 6;

in this embodiment, the conversion circuit 5 is a conventional DC-DC conversion circuit 5 that can convert a first direct current into a second direct current.

The second control circuit 2 is respectively connected with the first control circuit 1 and the conversion circuit 5, and the second control circuit 2 is used for controlling the conversion circuit 5 to convert the first direct current output by the plurality of energy storage modules into second direct current and output the second direct current to the energy storage transformer 6;

in this embodiment, the second control circuit 2 may output PWM wave signals with different duty ratios to the conversion circuit 5, so that the conversion circuit 5 may convert the first direct currents with different voltage values into the second direct currents with different voltage values with different conversion efficiencies.

In this embodiment, the voltage value of the first direct current may be greater than or equal to the voltage value of the second direct current, or may be less than or equal to the voltage value of the second direct current, which is not limited herein.

In this embodiment, the second control circuit 2 is an existing main control chip, which is not limited herein.

Wherein the second control circuit 2 is arranged to: in response to a power supply request output by a user, acquiring battery parameters of a plurality of energy storage modules through a first control circuit 1, determining a target energy storage module of which the battery parameters are smaller than or equal to a first set threshold and within a set difference value with the first set threshold, and outputting a first control signal to the first control circuit 1, so that the first control circuit 1 controls a first switch K1 corresponding to the target energy storage module to be in a first state, and the target energy storage modules are connected in series; the second control circuit 2 is further configured to determine a target conversion efficiency of the conversion circuit 5 according to the battery parameter of the target energy storage module, and control the conversion circuit 5 to convert the first direct current into the second direct current at the target conversion efficiency, in a case where the first control circuit 1 outputs the first feedback information about the completion of the opening of the first switch K1.

In this embodiment, the power supply request may be sent by a terminal device used by a user, where the power supply request may be indicated as that the user requests to perform power supply in a certain period of time or starts to perform power supply at the current moment, and the disclosure is not limited herein.

In this embodiment, the battery parameter may be a voltage, a current, a power consumption, a temperature, an electric quantity, etc. of the battery, which is not limited herein.

In this embodiment, the first set threshold is the highest value of the battery power or voltage in the plurality of energy storage modules, for example, the battery power of the battery a is 70%, the battery power of the battery B is 76%, and the battery power of the battery C is 73%, and then the first set threshold is 76%. The difference is set to be, for example, a difference of ±3%, a difference of ±5% or a difference of ±10%, for example, 70% for battery a, 76% for battery B, 73% for battery C, then 76% for the first set threshold, and ±3% for the target energy storage module, then battery B and battery C.

In this embodiment, the different conversion efficiencies and the corresponding different duty ratios, for example, the conversion efficiency with the duty ratio of 100% is higher than the conversion efficiency with the duty ratio of 75%, and the specific correspondence relationship is set manually, which is not limited herein.

As shown in fig. 1, the first switch K1 has a first state and a second state, in which the first switch K1 is in the first state, the moving end of the first switch K1 is connected to the first fixed end, and in which the first switch K1 is in the second state, the moving end of the first switch K1 is connected to the second fixed end.

In this embodiment, the first switch K1 is turned on to be completed that the movable end and the first stationary end of the first switch K1 are successfully connected.

In some embodiments, in order to enable the first control circuit 1 to collect battery parameters of each first battery 3 and send and receive information to and from the second control circuit 2, as shown in fig. 1, the first control circuit 1 includes a control chip 13, an analog signal receiving module 14 and a communication module 15, where the control chip 13 is connected to the analog signal receiving module 14 and the communication module 15, and the control chip 13 detects battery parameters of a plurality of energy storage modules through the analog signal receiving module 14, and the control chip 13 is connected to the second control module through the communication module 15.

In some embodiments, as shown in fig. 1, the first control circuit 1 further includes a converter 11, a second battery 12, and a second switch K2, where a first end of the first battery 3 of the tank circuit is connected to a first end of the second switch K2, a second end of the second switch K2 and a second end of the second battery 12 are respectively connected to the converter 11, the converter 11 is connected to the second battery 12, and the second battery 12 is connected to the control chip 13.

In this embodiment, the converter 11 is a conventional buck-boost circuit, and is not limited herein, so that the dc power output by the first battery 3 can meet the dc power required by the second battery 12.

In this embodiment, the second switch K2 is controlled by the control chip 13, and when the first control circuit 1 receives the equalizing signal, the first control circuit 1 controls the second switch K2 to be closed, so that the first battery 3 closed by the second switch K2 can supply power to the second battery 12 through the converter 11.

In some embodiments, the power generation mechanism 4 is further included, the power generation mechanism 4 is connected with the active end of the first switch K1 of the first energy storage module and the second end of the first battery 3 of the last energy storage module, and the power generation mechanism 4 is controlled by the second control circuit 2.

In the present embodiment, the power generation mechanism 4 may be a solar panel, or may be a generator, for example, a wind generator, etc., which is not limited herein.

In some examples, as shown in fig. 1, the energy storage device further includes a third switch K3, where the third switch K3 is disposed between the plurality of energy storage modules and the conversion circuit 5, and the third switch K3 is controlled by the second control circuit 2, and the second control circuit 2 may control the third switch K3 to be closed before determining the target conversion efficiency of the conversion circuit 5 according to the battery parameter of the target energy storage module, and controlling the conversion circuit 5 to convert the first direct current into the second direct current with the target conversion efficiency, so as to improve the safety factor of the detection device of the whole energy storage transformer 6.

The memory of the second control circuit 2 is used for storing a computer program for controlling the processor of the second control circuit 2 to operate to implement the power supply method according to any of the embodiments, applied in the embodiments of the present disclosure. The skilled person may design a computer program according to the solution of the embodiments of the present disclosure. How the computer program controls the processor to operate is well known in the art and will not be described in detail here.

< method example >

Fig. 2 is a flow diagram of a power supply method according to one embodiment. The main body of this embodiment is, for example, the second control circuit 2 in fig. 1.

As shown in fig. 2, the power supply method of the present embodiment may include the following steps S210 to S240:

step S210, in response to a power supply request output by a user, battery parameters of the energy storage modules are obtained through the first control circuit.

Step S220, determining a target energy storage module with the battery parameter smaller than or equal to a first set threshold and within a set difference value from the first set threshold.

In this embodiment, the target energy storage modules are at least two energy storage modules.

In this embodiment, the first set threshold is the highest value of the battery power or voltage in the plurality of energy storage modules, for example, the battery power of the battery a is 70%, the battery power of the battery B is 76%, and the battery power of the battery C is 73%, and then the first set threshold is 76%. The difference is set to be, for example, a difference of ±3%, a difference of ±5% or a difference of ±10%, for example, 70% for battery a, 76% for battery B, 73% for battery C, then 76% for the first set threshold, and ±3% for the target energy storage module, then battery B and battery C.

In this embodiment, in order to select a larger number of first batteries meeting the requirements to realize longer-time power supply, the battery parameters are battery power or voltage; the first set threshold is the highest value of the battery electric quantity or voltage in the plurality of energy storage modules; the value of the battery electric quantity or the voltage of the target energy storage module is larger than or equal to the highest value of the battery electric quantity or the voltage minus the set difference value.

In some embodiments, to be able to power the energy storage transformer in the absence of a plurality of target energy storage modules, after step S220, the method further comprises: under the condition that the target energy storage module does not exist, determining an alternative energy storage module with the battery parameter higher than a second set threshold value; outputting a second control signal to the first control circuit, so that the first control circuit controls the control switch corresponding to the preparation and selection energy storage module to be in a first state; in the case where the first control circuit outputs first feedback information on the completion of turning on of the switch, an alternative conversion efficiency of the conversion circuit is determined, and the conversion circuit is controlled to convert the first direct current into the second direct current at the alternative conversion efficiency.

In this embodiment, the second set threshold is, for example, 80%,90% or 95%, etc., which is not limited herein.

In this embodiment, the alternative conversion efficiency is preset, that is, the alternative conversion efficiency is a fixed conversion efficiency, that is, the fixed conversion efficiency corresponds to a fixed duty ratio, for example, 100%, so that the alternative energy storage module can provide a direct current with a larger voltage value.

In some embodiments, in order to reduce the voltage difference or the power difference between the first batteries in the target energy storage module for the purpose of battery balancing, the power supply request is a request to start power supply at the first set time node, and after step S220, the method further includes: determining the minimum value of the voltage or the electric quantity in the target energy storage module and the relative difference value between the value of the voltage or the electric quantity corresponding to the target energy storage module and the minimum value according to the battery voltage or the electric quantity of the target energy storage module; setting an equalization signal according to a first time length between the current time and a first set time node, a relative difference value and a preset equalization sequence; and outputting an equalization signal to the first control circuit, so that the first control circuit responds to the equalization signal to control the second switch of the equalization energy storage module with the relative difference value larger than 0 in the target energy storage module to be closed, and the second battery is powered through the converter for a first time length.

In this embodiment, the first control circuit may also supply power to the second battery through an external power source, and the power supply mode is the prior art, which is not described herein specifically.

In this embodiment, the equalization sequence is that in the target energy storage module, the first battery in the energy storage module with a relatively large difference is preferentially selected, the equalization signal is that the first control circuit can control the second switch corresponding to the first battery in the energy storage module with a relatively large difference to be closed, and according to the value of the relatively large difference and a preset mapping relationship, the closing duration of the second switch corresponding to the first battery in each energy storage module with a relatively large difference is determined, where the mapping relationship is that different relative differences correspond to different closing durations, for example: the relative difference of 1% corresponds to 1min, and is not limited herein.

In some examples, the first time period is 10min, the electric quantity of the first battery E in the target energy storage module is 70%, the electric quantity of the first battery F is 73%, the electric quantity of the first battery G is 75%, the minimum value is 70%, the relative difference value corresponding to the first battery F is 3%, and the relative difference value corresponding to the first battery G is 5%, so that the second switch corresponding to the first battery G is preferentially controlled to be closed for 5min, and then the second switch corresponding to the first battery F is controlled to be closed for 3min, so that the first battery F and the first battery G can charge the second battery of the first control circuit, and the relative difference value among the first battery E, the first battery F and the first battery G can be reduced, thereby achieving the purpose of battery equalization.

In some examples, the first time period is 6min, the electric quantity of the first battery E in the target energy storage module is 70%, the electric quantity of the first battery F is 73%, the electric quantity of the first battery G is 75%, the minimum value is 70%, the relative difference value corresponding to the first battery F is 3%, the relative difference value corresponding to the first battery G is 5%, then the second switch corresponding to the first battery F is closed for 3min, the second switch corresponding to the first battery G is closed for 5min, then the second switch corresponding to the first battery G is preferentially controlled to be closed for 5min, and then the second switch corresponding to the first battery F is controlled to be closed for 1min.

Step S230, outputting a first control signal to the first control circuit, so that the first control circuit controls the control switch corresponding to the target energy storage module to be in the first state, so that the target energy storage modules are connected in series.

In step S240, when the first control circuit outputs feedback information about the switch being turned on, the target conversion efficiency of the conversion circuit is determined according to the battery parameter of the target energy storage module, and the conversion circuit is controlled to convert the first direct current into the second direct current with the target conversion efficiency.

In some examples, the target conversion efficiency of the conversion circuit is determined according to the battery parameters of the target energy storage module, that is, the different number of target energy storage modules corresponds to different target conversion efficiencies, and the different target conversion efficiencies correspond to different duty ratios, for example, in the case that the number of first batteries of the target energy storage module is 2, the duty ratio corresponding to the target conversion efficiency is 50%, in the case that the number of first batteries of the target energy storage module is 3, the duty ratio corresponding to the target conversion efficiency is 75%, in the case that the number of first batteries of the target energy storage module is 4, the duty ratio corresponding to the target conversion efficiency is 100%, and the corresponding relationship is set manually, which is not limited herein.

In some embodiments, to enable powering the first battery, the method further comprises: acquiring battery parameters of a plurality of energy storage modules through a first control circuit; under the condition that the battery parameters of the plurality of energy storage modules are lower than a third set threshold value, determining the residual difference values of the battery parameters of the plurality of energy storage modules; determining at least one group of charging energy storage modules with residual difference values within a set range in the plurality of energy storage modules; setting a charging signal according to at least one group of charging energy storage modules; outputting a charging signal to a first control signal, so that the first control signal responds to the charging signal and sequentially controls a first switch corresponding to one group of the at least one group of the charging energy storage modules to be in a first state, and the first batteries corresponding to one group of the at least one group of the charging energy storage modules are connected in series; and under the condition that the first control circuit outputs second feedback information about the completion of the opening of the switch, controlling the power generation mechanism to charge the first battery corresponding to one group of the at least one group of the charging energy storage modules.

In the present embodiment, the third set threshold is, for example, 20%,30%, 40%, or the like, and is not limited herein.

In the present embodiment, the setting range is, for example, 3%,5%, 6%, or the like, and is not limited thereto.

In some examples, the power of the first battery X is 15%, the power of the first battery Y is 13%, the power of the first battery Z is 10%, and the set range is 5%, then the relative difference between the first battery X and the first battery Z is 5%, and the relative difference between the first battery Y and the first battery Z is 3%. The second control circuit may output a charging signal regarding a group of charging to the first battery X, the first battery Y, and the first battery Z such that the first control signal controls the first switches of the first battery X, the first battery Y, and the first battery Z to be in the first state in response to the charging signal such that the power generation mechanism may charge the first battery X, the first battery Y, and the first battery Z.

< device example one >

Fig. 3 is a functional block diagram of a power supply device according to one embodiment. As shown in fig. 4, the power supply apparatus 300 may include:

a parameter obtaining module 310, configured to obtain battery parameters of the plurality of energy storage modules through the first control circuit in response to a power supply request output by a user;

the module determining module 320 is configured to determine a target energy storage module that the battery parameter is less than or equal to a first set threshold and is within a set difference value from the first set threshold;

the switch control module 330 is configured to output a first control signal to the first control circuit, so that the first control circuit controls the control switch corresponding to the target energy storage module to be in a first state, so that the target energy storage modules are connected in series with each other;

The efficiency determining module 340 is configured to determine a target conversion efficiency of the converting circuit according to the battery parameter of the target energy storage module, and control the converting circuit to convert the first direct current into the second direct current with the target conversion efficiency, when the first control circuit outputs feedback information about the switch being turned on.

Optionally, the power supply apparatus 300 may further include a conversion control module, configured to determine, in the absence of the target energy storage module, an alternative energy storage module having a battery parameter higher than a second set threshold; outputting a second control signal to the first control circuit, so that the first control circuit controls the control switch corresponding to the preparation and selection energy storage module to be in a first state; in the case where the first control circuit outputs first feedback information on the completion of turning on of the switch, an alternative conversion efficiency of the conversion circuit is determined, and the conversion circuit is controlled to convert the first direct current into the second direct current at the alternative conversion efficiency.

Optionally, the power supply device 300 may further include an equalization control module, configured to determine, according to a battery voltage or an electric quantity of the target energy storage module, a minimum value of the voltage or the electric quantity in the target energy storage module and a relative difference value between a value of the voltage or the electric quantity corresponding to the target energy storage module and the minimum value, respectively; setting an equalization signal according to a first time length between the current time and a first set time node, a relative difference value and a preset equalization sequence; and outputting an equalization signal to the first control circuit, so that the first control circuit responds to the equalization signal to control the second switch of the equalization energy storage module with the relative difference value larger than 0 in the target energy storage module to be closed, and the second battery is powered through the converter for a first time length.

Optionally, the power supply device 300 may further include a charging control module, configured to obtain battery parameters of the plurality of energy storage modules through the first control circuit; under the condition that the battery parameters of the plurality of energy storage modules are lower than a third set threshold value, determining the residual difference values of the battery parameters of the plurality of energy storage modules; determining at least one group of charging energy storage modules with residual difference values within a set range in the plurality of energy storage modules; setting a charging signal according to at least one group of charging energy storage modules; outputting a charging signal to a first control signal, so that the first control signal responds to the charging signal and sequentially controls a first switch corresponding to one group of the at least one group of the charging energy storage modules to be in a first state, and the first batteries corresponding to one group of the at least one group of the charging energy storage modules are connected in series; and under the condition that the first control circuit outputs second feedback information about the completion of the opening of the switch, controlling the power generation mechanism to charge the first battery corresponding to one group of the at least one group of the charging energy storage modules.

The power supply device 300 may be the second control circuit 2.

< device example two >

Fig. 4 is a schematic diagram of a hardware configuration of a power supply device according to another embodiment.

As shown in fig. 4, the power supply apparatus 400 includes a processor 410 and a memory 420, the memory 420 being for storing an executable computer program, the processor 410 being for performing a method as any of the above method embodiments according to control of the computer program.

The power supply means 400 may be the second control circuit 2.

The above modules of the power supply apparatus 300 may be implemented by the processor 410 executing the computer program stored in the memory 420 in the present embodiment, or may be implemented by other structures, which are not limited herein.

The present invention may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present invention.

The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: portable computer disks, hard disks, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static Random Access Memory (SRAM), portable compact disk read-only memory (CD-ROM), digital Versatile Disks (DVD), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove structures such as punch cards or grooves having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media, as used herein, are not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical pulses through fiber optic cables), or electrical signals transmitted through wires.

The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.

Computer program instructions for carrying out operations of the present invention may be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, c++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present invention are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information for computer readable program instructions, which can execute the computer readable program instructions.

Various aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable medium having the instructions stored therein includes an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, implementation by software, and implementation by a combination of software and hardware are all equivalent.

The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.

Claims (10)

1. A detection device for an energy storage transformer, comprising:

the energy storage modules comprise a first switch and a first battery, a first fixed end of the first switch is connected with a first end of the first battery, and a second fixed end of the first switch is connected with a second end of the first battery; the second end of the first battery in the former energy storage module is connected with the movable end of the first switch in the latter energy storage module;

the first control circuit is connected with the energy storage modules to detect battery parameters of the energy storage modules;

The first end of the conversion circuit is connected with the movable end of the first switch of the first energy storage module and the second end of the first battery of the last energy storage module, and the second end of the conversion circuit is connected with the energy storage transformer; and

the second control circuit is respectively connected with the first control circuit and the conversion circuit and is used for controlling the conversion circuit to convert the first direct current output by the energy storage modules into second direct current and output the second direct current to the energy storage transformer;

wherein the second control circuit is configured to: responding to a power supply request output by a user, acquiring battery parameters of a plurality of energy storage modules through the first control circuit, determining a target energy storage module with the battery parameters smaller than or equal to a first set threshold and within a set difference value with the first set threshold, and outputting a first control signal to the first control circuit, so that the first control circuit controls a first switch corresponding to the target energy storage module to be in a first state, and the target energy storage modules are connected in series; the second control circuit is further configured to determine a target conversion efficiency of the conversion circuit according to the battery parameter of the target energy storage module, and control the conversion circuit to convert the first direct current into the second direct current at the target conversion efficiency, when the first control circuit outputs first feedback information about completion of turning on of the first switch.

2. The device for detecting an energy storage transformer according to claim 1, wherein the first control circuit comprises a control chip, an analog signal receiving module and a communication module, the control chip is respectively connected with the analog signal receiving module and the communication module, the control chip detects battery parameters of a plurality of energy storage modules through the analog signal receiving module, and the control chip is connected with the second control module through the communication module.

3. The device for detecting an energy storage transformer according to claim 2, wherein the first control circuit further comprises a converter, a second battery and a second switch, a first end of the first battery of the energy storage circuit is connected to a first end of the second switch, a second end of the second switch and a second end of the second battery are respectively connected to the converter, the converter is connected to the second battery, and the second battery is connected to the control chip.

4. The device for detecting an energy storage transformer according to claim 1, further comprising a power generation mechanism connected to the movable end of the first switch of the first energy storage module and the second end of the first battery of the last energy storage module, wherein the power generation mechanism is controlled by the second control circuit.

5. A power supply method, characterized in that the execution subject of the method is the second control circuit according to any one of claims 1 to 4, the method comprising:

responding to a power supply request output by a user, and acquiring battery parameters of a plurality of energy storage modules through the first control circuit;

determining a target energy storage module with a battery parameter smaller than or equal to a first set threshold and within a set difference value with the first set threshold;

outputting a first control signal to the first control circuit, so that the first control circuit controls a control switch corresponding to the target energy storage module to be in a first state, and the target energy storage modules are connected in series;

and under the condition that the first control circuit outputs feedback information about the completion of the opening of the switch, determining the target conversion efficiency of the conversion circuit according to the battery parameter of the target energy storage module, and controlling the conversion circuit to convert the first direct current into the second direct current with the target conversion efficiency.

6. The power supply method according to claim 5, wherein the battery parameter is battery power or voltage; the first set threshold is the highest value of the battery electric quantity or voltage in the energy storage modules; and the value of the battery electric quantity or the voltage of the target energy storage module is larger than or equal to the highest value of the battery electric quantity or the voltage minus a set difference value.

7. The method of claim 5, wherein after determining the target energy storage module that the battery parameter is less than or equal to a first set threshold and within a set difference from the first set threshold, the method further comprises:

under the condition that the target energy storage module is not stored, determining an alternative energy storage module with the battery parameter higher than a second set threshold value;

outputting a second control signal to the first control circuit, so that the first control circuit controls the control switch corresponding to the alternative energy storage module to be in a first state;

and determining alternative conversion efficiency of the conversion circuit and controlling the conversion circuit to convert the first direct current into the second direct current at the alternative conversion efficiency under the condition that the first control circuit outputs first feedback information about the completion of opening of the switch.

8. The power supply method according to claim 6, wherein the power supply request is a request to start power supply at a first set time node;

after the determining that the battery parameter is less than or equal to a first set threshold and is within a set difference from the first set threshold, the method further includes:

Determining the minimum value of the voltage or the electric quantity in the target energy storage module and the relative difference value between the value of the voltage or the electric quantity corresponding to the target energy storage module and the minimum value according to the battery voltage or the electric quantity of the target energy storage module;

setting an equalization signal according to a first time length between the current time and the first set time node, the relative difference value and a preset equalization sequence;

and outputting the equalization signal to the first control circuit, so that the first control circuit responds to the equalization signal to control a second switch of the equalization energy storage module with the relative difference value larger than 0 in the target energy storage module to be closed, and the second battery is powered through a converter for the first time period.

9. The power supply method according to claim 6, characterized in that the method further comprises:

acquiring battery parameters of a plurality of energy storage modules through the first control circuit;

under the condition that the battery parameters of the plurality of energy storage modules are lower than a third set threshold value, determining the residual difference values of the battery parameters of the plurality of energy storage modules;

determining at least one group of charging energy storage modules with the residual difference value within a set range in the plurality of energy storage modules;

Setting a charging signal according to the at least one group of charging energy storage modules;

outputting the charging signal to the first control signal, so that the first control signal responds to the charging signal and sequentially controls the first switch corresponding to one group of the at least one group of the charging energy storage modules to be in a first state, so that the first batteries corresponding to one group of the at least one group of the charging energy storage modules are connected in series;

and under the condition that the first control circuit outputs second feedback information about the completion of the opening of the switch, controlling the power generation mechanism to charge a first battery corresponding to one group of the at least one group of the charging energy storage modules.

10. A power supply device comprising a memory and a processor, the memory for storing a computer program; the processor is configured to execute the computer program to implement the method according to any one of claims 5 to 9.