CN207510227U - Pre-charging device, system and electric vehicle - Google Patents
Pre-charging device, system and electric vehicle Download PDFInfo
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- CN207510227U CN207510227U CN201721255684.5U CN201721255684U CN207510227U CN 207510227 U CN207510227 U CN 207510227U CN 201721255684 U CN201721255684 U CN 201721255684U CN 207510227 U CN207510227 U CN 207510227U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model provides a kind of pre-charging device, system and electric vehicle, the pre-charging device includes battery system and precharge circuitry, the precharge circuitry includes the second branch being made of total positive high voltage contactor and the first branch being made of the first pre-charge-relay, the first pre-charge resistance and the first controllable pre-charge circuit submodule.Wherein, the first branch and the second branch are in parallel.First controllable pre-charge circuit submodule includes the second pre-charge-relay being connected in parallel and the second pre-charge resistance.The pre-charging device collectively forms equivalent pre-charge resistance by the series connection of multiple power resistors, has effectively shared power requirement of the system to single pre-charge resistance.The pre-charging device can effectively be controlled pre-charge current size in pre-charge process, can especially improve the pre-charge current size in precharge later stage, so as to effectively shorten precharge time, be promoted vehicle performance and user experience using multistage pre-charge circuit technology.
Description
Technical field
The utility model is related to new-energy automobile power technique fields, in particular to a kind of pre-charging device, system
And electric vehicle.
Background technology
There are rechargeable energy storage device of one group of battery system as vehicle, the energy storage in the high-pressure system of new-energy automobile
Device provides electric energy for driving motor, so as to achieve the purpose that drive vehicle traveling.Electric machine controller is generally in system input
The large bulk capacitance of multiple parallel connections is set, which is used to filter and stablize the input voltage of motor.Its in vehicle
His high-voltage system load, such as DC-DC converter, compressor of air conditioner, are equally built-in with front end capacitance.Work as vehicle launch, carry out
During high pressure power on operation, to reduce rush of current during system electrification, and dash current damage high voltage connector and fusing are prevented
Device, breakdown front end capacitance and acceleration cell degradation, it is necessary to pre-charge circuit be configured between battery system and high-voltage load.
Pre-charge circuit of the prior art is generally made of pre-charge-relay and pre-charge resistance, wherein precharge electricity
It hinders for single power resistor.This pre-charge circuit in pre-charge process, increases, in advance with the voltage at load capacitance both ends
Charging current also will constantly decline, and especially phase, pre-charge current can be very small after precharging, and only in the mA orders of magnitude, this will be tight
Extend system precharge time again, increase vehicle high-voltage powers on total time.Existing pre-charge resistance is only with single power electricity
The mode of resistance when Single Point of Faliure occurs for pre-charge resistance, if failure mode is short circuit, is closed pre-charge-relay and carries out preliminary filling
Instantaneous current impact can not be avoided when electric.Also, pre-charge resistance is only with single power resistor, in vehicle high-voltage system
Unite voltage platform is higher, high-voltage load end equivalent capacity is larger, it is higher to pre-charge resistance power demand in the case of, this will be big
The parts selection range of big limitation pre-charge resistance increases the parts selection difficulty of pre-charge resistance.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of pre-charging device, system and electric vehicle, in solution
State problem.
The utility model preferred embodiment provides a kind of pre-charging device, for loading into line precharge, the preliminary filling
Electric installation includes battery system and precharge circuitry, the cathode output end of the battery system and the pre-charge circuit
The first end connection of system, the second end of the precharge circuitry are connect with the first end of the load, the battery system
The cathode output end of system is connect by total negative high voltage contactor S1 with the second end of the load；
The precharge circuitry includes the first branch and the second branch, and the first branch and the second branch are simultaneously
Connection；
The second branch includes total positive high voltage contactor S2；
The first branch includes the first pre-charge-relay S3, the first pre-charge resistance R3 and first and is controllably pre-charged
Circuit submodule, the first pre-charge-relay S3, the controllable pre-charge circuit submodules of the first pre-charge resistance R3 and first
Block is connected；
The first controllable pre-charge circuit submodule includes the second pre-charge-relay S4 and the second pre-charge resistance
R4, the second pre-charge-relay S4 are in parallel with the second pre-charge resistance R4.
Further, the first branch further includes the second controllable pre-charge circuit submodule, the second controllable preliminary filling
Circuit submodule is connected with the described first controllable pre-charge circuit submodule, the second controllable pre-charge circuit submodule
One end is connect with the described first controllable pre-charge circuit submodule, the other end is connect with the first end of the load；
The second controllable pre-charge circuit submodule includes third pre-charge-relay S5 and third pre-charge resistance
R5, the third pre-charge-relay S5 are in parallel with the third pre-charge resistance R5.
Further, the battery system includes multiple single batteries, and the multiple single battery is connected in series with.
Further, the battery system further includes at least one service switch, at least one service switch series connection
Between multiple single batteries.
Further, the first pre-charge resistance R3, the second pre-charge resistance R4 and third precharge
The resistance value of resistance R5 is identical.
Further, the first pre-charge resistance R3, the second pre-charge resistance R4 and third precharge
The model of resistance R5 is identical.
Further, the first pre-charge-relay S3, the second pre-charge-relay S4 and the third are pre-
The model of charge relay S5 is identical.
Further, the first pre-charge-relay S3, the second pre-charge-relay S4 and the third are pre-
Charge relay S5 is monostable, single-pole double throw, normally opened type relay.
Another preferred embodiment of the utility model also provides a kind of pre-charge system, including load and above-mentioned preliminary filling
Electric installation, the pre-charging device include battery system and precharge circuitry, the cathode output end of the battery system
It is connect with the first end of the precharge circuitry, the second end of the precharge circuitry and the first end of the load
Connection, the cathode output end of the battery system are connect by total negative high voltage contactor S1 with the second end of the load.
Another preferred embodiment of the utility model also provides a kind of electric vehicle, the electric vehicle include body shell and
Above-mentioned pre-charging device, the pre-charging device are set in the body shell of the electric vehicle.
A kind of pre-charging device, system and the electric vehicle that the utility model embodiment provides, wherein, pre-charging device is by more
A power resistor series connection collectively forms equivalent pre-charge resistance, and effectively having shared system will to the power of single pre-charge resistance
It asks, has widened the limitation of precharge power resistance type selecting.And it using the topological structure of multiple resistance series connection, avoids because single
Caused direct-current high-voltage system current impact, improves high-voltage safety protection of system etc. after pre-charge resistance short-circuit failure
Grade.The pre-charging device uses multistage pre-charge circuit technology, and pre-charge current size can be effectively controlled in pre-charge process,
The pre-charge current size in precharge later stage can be especially improved, so as to effectively shorten precharge time, promotes vehicle performance and use
It experiences at family.
For the above-mentioned purpose of the utility model, feature and advantage is enable to be clearer and more comprehensible, the utility model cited below particularly compared with
Good embodiment, and attached drawing appended by cooperation, are described in detail below.
Description of the drawings
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the schematic block diagram of pre-charging device that the utility model preferred embodiment provides.
Fig. 2 is the circuit diagram of pre-charging device that the utility model preferred embodiment provides.
Fig. 3 is another circuit diagram of pre-charging device that the utility model preferred embodiment provides.
Fig. 4 is the flow chart of pre-charge method that the utility model preferred embodiment provides.
Fig. 5 is another flow chart of pre-charge method that the utility model preferred embodiment provides.
Icon：10- pre-charging devices；110- battery systems；120- precharge circuitries；121- first is controllably pre-charged
Circuit submodule；The second controllable pre-charge circuit submodules of 122-；The total negative high voltage contactors of S1-；The total positive high voltage contactors of S2-；
The first pre-charge-relays of S3-；The second pre-charge-relays of S4-；S5- third pre-charge-relays；R3- first is pre-charged electricity
Resistance；The second pre-charge resistances of R4-；R5- third pre-charge resistances.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.Obviously, described embodiment is only the part of the embodiment rather than whole of the utility model
Embodiment.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be matched with a variety of different
It puts to arrange and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiment of the utility model provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Example is applied, those skilled in the art's all other embodiments obtained under the premise of creative work is not made belong to
The range of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.In the utility model
In description, it should be noted that term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint
Relative importance.
Below in conjunction with the accompanying drawings, it elaborates to some embodiments of the utility model.In the absence of conflict, under
Feature in the embodiment and embodiment stated can be combined with each other.
As depicted in figs. 1 and 2, the utility model embodiment provides a kind of pre-charging device 10, pre- for being carried out to load
Charging.In the present embodiment, the load can be vehicle in high-voltage system load, such as electric machine controller, DC-DC conversion
Device, compressor of air conditioner etc..In the present embodiment, can be a RC circuits by the load equivalent.The pre-charging device 10 includes
Battery system 110 and precharge circuitry 120.The cathode output end of wherein described battery system 110 and the precharge
The first end connection of circuit system 120, the second end of the precharge circuitry 120 and the anode of the RC equivalent circuits are defeated
Outlet connects, and the cathode output end of the battery system 110 is negative by total negative high voltage contactor S1 and the RC equivalent circuits
Pole output terminal connection.
Optionally, in the present embodiment, the battery system 110 includes single battery core set and service switch.Wherein, institute
Its topological structure of single battery core set is stated to be connected in series with.Further, the single battery core set includes multiple single batteries,
It uses and is connected in series with successively between multiple single batteries.The service switch is Manual maintenance switch, wherein, the service switch
Can be one or more, and be connected between multiple single batteries.In the present embodiment, by the quantity of the service switch
One is set as, and the service switch is connected to the middle position of multiple single batteries, i.e., is divided equally multiple single batteries
To both sides.In the specific implementation, its voltage can be higher after multiple single battery connections, and when repairing, high voltage will
Threaten personal safety.Service switch is set in the centre position of multiple single batteries, then when repairing, disconnection can be passed through
The service switch reduces the voltage at both ends with this to block multiple single batteries from centre position so that the voltage at both ends
Respectively it is reduced to the half of primary voltage, so improves safety coefficient during repair.
Optionally, in the present embodiment, the RC equivalent circuits include equivalent load capacitance and equivalent load resistance,
In, the equivalent load capacitance is connected in parallel with the equivalent load resistance.
In the present embodiment, the precharge circuitry 120 includes the first branch and the second branch, wherein described first
Branch and the second branch are in parallel.The second branch includes total positive high voltage contactor S2.The first branch includes first
Pre-charge-relay S3, the controllable pre-charge circuit submodules 121 of the first pre-charge resistance R3 and first.Wherein, described first
Pre-charge-relay S3, the controllable pre-charge circuit submodules 121 of the first pre-charge resistance R3 and first are connected.Described first can
It controls pre-charge circuit submodule 121 and includes the second pre-charge-relay S4 and the second pre-charge resistance R4, second preliminary filling
Electrical relay S4 is in parallel with the second pre-charge resistance R4.
Further, 110 cathode output end of battery system and total positive high voltage in the precharge circuitry 120
One end connection of contactor S2, in the cathode output end of the RC equivalent circuits and the precharge circuitry 120 it is total just
The other end connection of high voltage connector S2.The cathode output end of the battery system 110 is with total negative high voltage contactor S1's
One end connects, and the cathode output end of the RC equivalent circuits is connect with the other end of total negative high voltage contactor S1.
Specifically, one end of the first pre-charge-relay S3 connect with the cathode output end of the battery system 110,
The other end is connect with one end of the first pre-charge resistance R3.The other end of the first pre-charge resistance R3 respectively with it is described
One of the second pre-charge-relay S4 and the second pre-charge resistance R4 included by first controllable pre-charge circuit submodule 121
End connection, the other end of the second pre-charge-relay S4 and the second pre-charge resistance R4 respectively with the equivalent RC circuit
Cathode output end connection.
Referring to Fig. 3, other than above-mentioned set-up mode, in the present embodiment, the first branch may also include second
Controllable pre-charge circuit submodule 122, the second controllable pre-charge circuit submodule 122 and the described first controllable precharge electricity
Way module 121 is connected, one end and the described first controllable pre-charge circuit of the second controllable pre-charge circuit submodule 122
Submodule 121 connects, the other end is connect with the first end of the load.
The second controllable pre-charge circuit submodule 122 includes third pre-charge-relay S5 and third precharge electricity
R5 is hindered, the third pre-charge-relay S5 is in parallel with the third pre-charge resistance R5.Specifically, third precharge after
Electric appliance S5 connect with one end of the third pre-charge resistance R5 with the described first controllable pre-charge circuit submodule 121 respectively,
Cathode output end of the other end respectively with the equivalent RC circuit is connect.
In the present embodiment, wherein the precharge circuitry 120 may include 1~3 controllable pre-charge circuit submodule
Block is not specifically limited the quantity of controllable pre-charge circuit submodule, can be configured according to actual conditions, had to reach
Effect reduces the purpose of the control complexity of precharge circuitry 120.
By above-mentioned setting, can by control the first pre-charge-relay S3, the second pre-charge-relay S4 and
The assembled state of third pre-charge-relay S5 dynamically adjusts equivalent pre-charge resistance size.The control signal of its repeat circuit
It is driven by the battery management system of vehicle.
In the specific implementation, total negative high voltage contactor S1 can be closed, makes cathode output end and the institute of battery system 110
The cathode output end connection of equivalent RC circuit is stated, then measures the terminal voltage of the battery system 110 and the equivalent RC circuit
Terminal voltage.When the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the equivalent RC circuit is more than first
During predetermined threshold value, then the first pre-charge-relay S3 is closed with into line precharge.When the terminal voltage of the battery system 110
When pressure difference between the terminal voltage of the equivalent RC circuit is more than the second predetermined threshold value and is less than or equal to the first predetermined threshold value, then
The first pre-charge-relay S3 and the second pre-charge-relay S4 are closed into line precharge.In this way, can then it reduce
Charging resistor resistance value is imitated, to increase charging current.
In the present embodiment, when the precharge circuitry 120 includes two controllable pre-charge circuit submodules, i.e.,
First controllable 121 and second controllable pre-charge circuit submodule 122 of pre-charge circuit submodule, then when the battery system
Pressure difference between 110 terminal voltage and the terminal voltage of the equivalent RC circuit is more than third predetermined threshold value and less than or equal to second
During predetermined threshold value, then the first pre-charge-relay S3, the second pre-charge-relay S4 and third precharge relay are closed
Device S5 is with into line precharge.
And when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the equivalent RC circuit is less than or equal to
During third predetermined threshold value, then total positive high voltage contactor S2 is closed with into line precharge.After precharge is completed, institute is disconnected
State the first pre-charge-relay S3, the second pre-charge-relay S4 and third pre-charge-relay S5.
By it is above-mentioned using multistage pre-charge circuit for loading into line precharge, can be in pre-charge process
Effectively control pre-charge current size, it is pre- so as to effectively shorten more particularly to improve the pre-charge current size in precharge later stage
Charging time, to promote vehicle performance and user experience.
Optionally, the tool of the first pre-charge resistance R3, the second pre-charge resistance R4 and third pre-charge resistance R5
Body resistance value and model are unrestricted, such as the first pre-charge resistance R3, the second pre-charge resistance R4 and third preliminary filling
The resistance value of resistance R5 may be configured as difference, and different model, certainly, the first pre-charge resistance R3, second also can be selected in model
The resistance value and model of pre-charge resistance R4 and third pre-charge resistance R5 also can be selected to be identical, not make in the present embodiment
Concrete restriction.
For the convenient instrument selection management for pre-charge resistance when implementing, in the present embodiment, first precharge
The resistance value of resistance R3, the second pre-charge resistance R4 and third pre-charge resistance R5 is selected as similar resistance, and described first
The model of pre-charge resistance R3, the second pre-charge resistance R4 and third pre-charge resistance R5 are also identical.
In addition, similarly, for the convenient instrument selection management to pre-charge-relay when implementing, in the present embodiment, institute
The model selection for stating the first pre-charge-relay S3, the second pre-charge-relay S4 and third pre-charge-relay S5 is identical.
Optionally, in the present embodiment, the first pre-charge-relay S3, the second pre-charge-relay S4 and third precharge after
Electric appliance S5 is monostable, single-pole double throw, normally opened type relay.Certainly, the first pre-charge-relay S3, the second precharge relay
The other kinds of relay for different model also can be selected in device S4 and third pre-charge-relay S5, in the present embodiment not
Make concrete restriction, can be selected according to demand.
The utility model embodiment also provides a kind of pre-charge system, and the pre-charge system includes load and above-mentioned
Pre-charging device 10, the pre-charging device 10 include battery system 110 and precharge circuitry 120, the battery system
The cathode output end of system 110 is connect with the first end of the precharge circuitry 120, the precharge circuitry 120
Second end is connect with the first end of the load, and the cathode output end of the battery system 110 passes through total negative high voltage contactor S1
It is connect with the second end of the load.
The utility model embodiment also provides a kind of electric vehicle, and the electric vehicle includes body shell and above-mentioned preliminary filling
Electric installation.The pre-charging device is set in the body shell of the electric vehicle.
Incorporated by reference to Fig. 4, the utility model embodiment also provides a kind of pre-charge method, applied to above-mentioned pre-charging device
10, for loading into line precharge.It should be noted that the method shown in Fig. 4, is in the pre-charging device 10
Precharge circuitry 120 include a controllable pre-charge circuit submodule (i.e. first controllable pre-charge circuit submodule
121) the application process under setting, is below illustrated the idiographic flow shown in Fig. 4.
Step S101 is closed total negative high voltage contactor S1, make the cathode output end of the battery system 110 with it is described
The second end connection of load.
Step S102 measures the terminal voltage of the battery system 110 and the terminal voltage of the load.
Step S103, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
During one predetermined threshold value, the first pre-charge-relay S3 is closed into line precharge.
Step S104, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
Two predetermined threshold values and during less than or equal to the first predetermined threshold value, are closed the first pre-charge-relay S3 and second precharge
Relay S4 is into line precharge.
Step S105, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load be less than etc.
When the second predetermined threshold value, total positive high voltage contactor S2 is closed into line precharge.
Step S106 after the completion of precharge, disconnects the first pre-charge-relay S3, second pre-charge-relay
S4。
It optionally, should referring to Fig. 5, another preferred embodiment of the utility model additionally provides a kind of pre-charge method
To contain the pre-charging device of the first controllable 121 and second controllable pre-charge circuit submodule 122 of pre-charge circuit submodule
10, optionally, the method includes：
Step S201 is closed total negative high voltage contactor S1, make the cathode output end of the battery system 110 with it is described
The second end connection of load.
Step S202 measures the terminal voltage of the battery system 110 and the terminal voltage of the load.
Step S203, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
During one predetermined threshold value, the first pre-charge-relay S3 is closed into line precharge.
Step S204, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
Two predetermined threshold values and during less than or equal to the first predetermined threshold value, are closed the first pre-charge-relay S3 and second precharge
Relay S4 is into line precharge.
Step S205, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load is more than the
Three predetermined threshold values and during less than or equal to the second predetermined threshold value, are closed the first pre-charge-relay S3, the second precharge relay
Device S4 and third pre-charge-relay S5 is with into line precharge；
Step S206, when the pressure difference between the terminal voltage of the battery system 110 and the terminal voltage of the load be less than etc.
When third predetermined threshold value, total positive high voltage contactor S2 is closed into line precharge.
Step S207 after the completion of precharge, disconnects the first pre-charge-relay S3, second pre-charge-relay
The S4 and third pre-charge-relay S5.
By the above-mentioned pre-charge method based on the pre-charging device 10, preliminary filling can be effectively controlled in pre-charge process
Electric size of current, can after precharging the phase improve pre-charge circuit size, to shorten precharge time, promote vehicle performance and use
It experiences at family.
In conclusion the utility model embodiment provides a kind of pre-charging device, system and electric vehicle, the pre-charging device
10 include battery system 110 and precharge circuitry 120, which is included by always just high contactor structure
Into the second branch and by the first pre-charge-relay S3, the first pre-charge resistance R3 and the first controllable pre-charge circuit
The first branch that submodule 121 forms.Wherein, the first branch and the second branch are in parallel.First controllable pre-charge circuit submodule
121 include the second pre-charge-relay S4 and the second pre-charge resistance R4 that are connected in parallel.
Pre-charging device 10 provided by the utility model collectively forms equivalent pre-charge resistance by the series connection of multiple power resistors,
Power requirement of the system to single pre-charge resistance effectively has been shared, has widened the limitation of precharge power resistance type selecting.And
The topological structure connected using multiple resistance, direct-current high-voltage system caused by avoiding after the single pre-charge resistance short-circuit failure
Current impact improves the high-voltage safety protection grade of system.The pre-charging device 10 is using multistage pre-charge circuit skill
Art can effectively control pre-charge current size in pre-charge process, and the pre-charge current that can especially improve the precharge later stage is big
It is small, so as to effectively shorten precharge time, promote vehicle performance and user experience.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by containing in the equivalent requirements of the claims is fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (10)
1. a kind of pre-charging device, for loading into line precharge, which is characterized in that the pre-charging device includes battery system
System and precharge circuitry, the cathode output end of the battery system and the first end of the precharge circuitry connect
It connects, the second end of the precharge circuitry is connect with the first end of the load, the cathode output end of the battery system
It is connect by total negative high voltage contactor S1 with the second end of the load；
The precharge circuitry includes the first branch and the second branch, and the first branch and the second branch are in parallel；
The second branch includes total positive high voltage contactor S2；
The first branch includes the first pre-charge-relay S3, the first pre-charge resistance R3 and the first controllable pre-charge circuit
Submodule, the first pre-charge-relay S3, the controllable pre-charge circuit submodule strings of the first pre-charge resistance R3 and first
Connection；
The first controllable pre-charge circuit submodule includes the second pre-charge-relay S4 and the second pre-charge resistance R4, institute
It is in parallel with the second pre-charge resistance R4 to state the second pre-charge-relay S4.
2. pre-charging device according to claim 1, which is characterized in that the first branch further includes the second controllable preliminary filling
Circuit submodule, the second controllable pre-charge circuit submodule are connected with the described first controllable pre-charge circuit submodule,
One end of the second controllable pre-charge circuit submodule is connect with the described first controllable pre-charge circuit submodule, the other end with
The first end connection of the load；
The second controllable pre-charge circuit submodule includes third pre-charge-relay S5 and third pre-charge resistance R5, institute
It is in parallel with the third pre-charge resistance R5 to state third pre-charge-relay S5.
3. pre-charging device according to claim 1, which is characterized in that the battery system includes multiple single batteries,
The multiple single battery is connected in series with.
4. pre-charging device according to claim 3, which is characterized in that the battery system further includes at least one repair
Switch, at least one service switch are connected between multiple single batteries.
5. pre-charging device according to claim 2, which is characterized in that the first pre-charge resistance R3, described second
The resistance value of pre-charge resistance R4 and the third pre-charge resistance R5 are identical.
6. pre-charging device according to claim 2, which is characterized in that the first pre-charge resistance R3, described second
The model of pre-charge resistance R4 and the third pre-charge resistance R5 are identical.
7. pre-charging device according to claim 2, which is characterized in that the first pre-charge-relay S3, described
The model of two pre-charge-relay S4 and the third pre-charge-relay S5 are identical.
8. pre-charging device according to claim 2, which is characterized in that the first pre-charge-relay S3, described
The two pre-charge-relay S4 and third pre-charge-relay S5 are monostable, single-pole double throw, normally opened type relay.
9. a kind of pre-charge system, which is characterized in that including the preliminary filling Denso described in load and claim 1-8 any one
It puts, the pre-charging device includes battery system and precharge circuitry, the cathode output end of the battery system and institute
The first end connection of precharge circuitry is stated, the second end of the precharge circuitry and the first end of the load connect
It connects, the cathode output end of the battery system is connect by total negative high voltage contactor S1 with the second end of the load.
10. a kind of electric vehicle, which is characterized in that the electric vehicle includes body shell and claim 1-8 any one institute
The pre-charging device stated, the pre-charging device are set in the body shell of the electric vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721255684.5U CN207510227U (en) | 2017-09-27 | 2017-09-27 | Pre-charging device, system and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721255684.5U CN207510227U (en) | 2017-09-27 | 2017-09-27 | Pre-charging device, system and electric vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107571739A (en) * | 2017-09-27 | 2018-01-12 | 风度（常州）汽车研发院有限公司 | Pre-charging device, system and method |
| CN111193296A (en) * | 2018-11-15 | 2020-05-22 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
| JP2021106453A (en) * | 2019-12-26 | 2021-07-26 | 日立Astemo株式会社 | Load circuit device and method for controlling the same |
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2017
- 2017-09-27 CN CN201721255684.5U patent/CN207510227U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107571739A (en) * | 2017-09-27 | 2018-01-12 | 风度（常州）汽车研发院有限公司 | Pre-charging device, system and method |
| CN111193296A (en) * | 2018-11-15 | 2020-05-22 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
| CN111193296B (en) * | 2018-11-15 | 2022-03-29 | 杭州海康机器人技术有限公司 | Pre-charging control device and method |
| JP2021106453A (en) * | 2019-12-26 | 2021-07-26 | 日立Astemo株式会社 | Load circuit device and method for controlling the same |
| JP7353170B2 (en) | 2019-12-26 | 2023-09-29 | 日立Astemo株式会社 | Load circuit device and method of controlling the load circuit device |
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