CN114792965A - Battery protection system, battery protection method and vehicle - Google Patents
Battery protection system, battery protection method and vehicle Download PDFInfo
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- CN114792965A CN114792965A CN202110097442.2A CN202110097442A CN114792965A CN 114792965 A CN114792965 A CN 114792965A CN 202110097442 A CN202110097442 A CN 202110097442A CN 114792965 A CN114792965 A CN 114792965A
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- battery
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- contactor
- circuit
- circuit breaker
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The present disclosure relates to a battery protection system, a battery protection method, and a vehicle. The disclosed battery protection system includes: a fuse disposed on a main circuit of the battery; the contactor is arranged on a charging circuit and/or a discharging circuit of the battery; a circuit breaker disposed on a main circuit of the battery; current detection means for detecting a battery current flowing through the battery; and the controller is in communication connection with the current detection device and the circuit breaker and is used for controlling the circuit breaker to be opened to cut off the main loop under the condition that the battery current is greater than or equal to the maximum allowable current of the contactor. So, when battery current exceeded the maximum allowable current of contactor, can in time cut off the major loop through the circuit breaker, the circuit breaker response is rapid, can effectively protect the major loop, covers the blind area that contactor and fuse can't protect, reduces the battery because of the too big possibility that leads to the high temperature or even the explosion on fire of electric current.
Description
Technical Field
The present disclosure relates to the field of vehicles, and in particular, to a battery protection system, a battery protection method, and a vehicle.
Background
Along with the development of new energy automobile technique, the safety requirement of vehicle is more and more taken into consideration, and current market vehicle incident of catching fire is frequent, and the reason of catching fire leads to including problems such as electric current overload, short circuit, collision, electric core.
In order to solve the problem that the current is too large due to overload, short circuit or collision, which may exist on a loop where the battery is located, a contactor and a fuse are generally arranged in the loop to cut off the circuit when the current is too large.
However, because the maximum allowable current of contactor is less than the fusing current of fuse, consequently, have the dead zone of protection that a contactor and fuse all can't cover in the battery circuit of setting contactor and fuse, when overcurrent was located this dead zone of protection, the contactor can't move, and the fuse can't be fused, leads to battery high temperature even to catch fire easily.
Disclosure of Invention
An object of the present disclosure is to provide a battery protection system, a battery protection method, and a vehicle to eliminate a blind zone of current overload protection.
In order to achieve the above object, a first aspect of the present disclosure provides a battery protection system including: a fuse disposed on a main circuit of the battery; the contactor is arranged on a charging circuit and/or a discharging circuit of the battery; a circuit breaker disposed on a main circuit of the battery; current detection means for detecting a battery current flowing through the battery; and the controller is in communication connection with the current detection device and the circuit breaker and is used for controlling the circuit breaker to be opened to cut off the main loop under the condition that the battery current is greater than or equal to the maximum allowable current of the contactor.
Optionally, the circuit breaker is also in direct communication with a crash sensor for automatic opening in response to a crash signal generated by the crash sensor.
Optionally, the controller is configured to control the circuit breaker to open to cut off the main circuit if the battery current is greater than or equal to a maximum allowable current of the contactor and less than or equal to a fusing current of the fuse.
Optionally, the controller is further connected in communication with the contactor, and configured to control the contactor to open when the battery current is greater than or equal to a preset current threshold and less than a maximum allowable current of the contactor.
Optionally, the contactor includes a first contactor disposed on the charging loop, and the controller is configured to control the first contactor to open when the battery is in the charging mode and the battery current is greater than or equal to a preset current threshold and less than a maximum allowable current of the first contactor.
Optionally, the contactor includes a second contactor disposed on the discharge loop, and the controller is configured to control the second contactor to open when the battery is in the discharge mode and the battery current is greater than or equal to a preset current threshold and less than a maximum allowable current of the second contactor.
Optionally, the controller is one of: battery management system, domain controller, vehicle control unit.
A second aspect of the present disclosure provides a battery protection method, including: detecting a battery current flowing through the battery; and controlling a breaker arranged on a main loop of the battery to be opened so as to break the main loop under the condition that the current of the battery is greater than or equal to the maximum allowable current of a contactor arranged on a charging loop and/or a discharging loop of the battery.
Optionally, the method further comprises: and controlling the contactor to be opened under the condition that the battery current is greater than or equal to a preset current threshold value and is less than the maximum allowable current of the contactor.
A third aspect of the present disclosure provides a vehicle including a battery, and further including a battery protection system provided according to the first aspect of the present disclosure.
Among the above-mentioned technical scheme, through set up the circuit breaker on the major loop, when the electric current surpassed the maximum allowable current of contactor, controller control circuit breaker disconnection, so, when leading to battery current to surpass the maximum allowable current of contactor because of the electric current overload, the short circuit or because of the collision, can in time cut off the major loop through the circuit breaker, the circuit breaker response is rapid, can effectively protect the major loop, thereby cover the protection blind area that contactor and fuse can't cover, reduce the battery because of the too big possibility that leads to the high temperature or even the explosion of catching fire of electric current.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but do not constitute a limitation of the disclosure. In the drawings:
fig. 1 is a schematic system structure diagram of a battery protection system according to an exemplary embodiment.
Fig. 2 is a schematic view of a partial structure of a battery protection system according to another exemplary embodiment.
Fig. 3 is a schematic diagram of a connection structure of a circuit breaker in a battery protection system according to still another exemplary embodiment.
Fig. 4 is a flowchart of a battery protection method according to an exemplary embodiment.
Fig. 5 is a flowchart of a battery protection method according to another exemplary embodiment.
Fig. 6 is a flowchart of a battery protection method according to yet another exemplary embodiment.
Description of the reference numerals
1-fuse, 21-first contactor, 22-second contactor, 3-circuit breaker, 4-current detection device, 5-main loop, 6-charging loop, 61-charging positive loop, 62-charging negative loop, 71-discharging positive loop, 72-discharging negative loop, 8-charging interface, 9-discharging interface and 10 batteries.
Detailed Description
The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
A description will first be given of a scenario of possible applications of the present disclosure. In order to solve the problem that the current is too large due to overload, short circuit or collision, which may exist on a loop where the battery is located, a contactor and a fuse are generally arranged in the loop to cut off the circuit when the current is too large.
However, because the maximum allowable current of contactor is less than the fusing current of fuse, consequently, have the protection blind area that a contactor and fuse all can't cover in the battery circuit of setting contactor and fuse, when the size of electric current was located this blind area, the contactor can't move, and the fuse can't be fused, leads to battery high temperature even to catch fire easily.
To solve the above technical problems, a first aspect of the present disclosure provides a battery protection system.
Fig. 1 is a schematic system structure diagram of a battery protection system according to an exemplary embodiment, and fig. 2 is a schematic partial structure diagram of a battery protection system according to another exemplary embodiment. Referring to fig. 1 and 2, the battery protection system may include a fuse 1 disposed on a main circuit 5 of a battery 10; a contactor provided on the charging circuit 6 and the discharging circuit of the battery 10; a circuit breaker 3 provided on the main circuit 5 of the battery 10; a current detection device 4 for detecting a battery current flowing through the battery 10; and a controller (not shown in fig. 1) connected in communication with the current detection device 4 and the circuit breaker 3 for controlling the circuit breaker 3 to open to break the main circuit 5 in case the battery current is greater than or equal to the maximum allowed current of the contactor.
So, through setting up circuit breaker 3 on main loop 5, when the electric current surpassed the maximum allowable current of contactor, controller control circuit breaker 3 disconnection, like this, when leading to battery current to surpass the maximum allowable current of contactor because of current overload, short circuit or because of the collision, can in time cut off main loop 5 through circuit breaker 3, circuit breaker 3 responds rapidly, can effectively protect main loop 5, cover the protection blind area that contactor and fuse 1 can't cover, reduce battery 10 because of the too big possibility that leads to the high temperature or even the explosion of catching fire of electric current.
For example, referring to fig. 1, the battery 10 may include a plurality of battery cells connected in series on the main circuit 5, and the fuse 1 may be disposed between the plurality of battery cells.
Illustratively, referring to fig. 1, the charging circuit 6 may include a charging positive circuit 61 and a charging negative circuit 62, the main circuit 5 has a positive terminal and a negative terminal, the positive terminal of the main circuit 5 is connected to the charging positive circuit 61, the negative terminal of the main circuit 5 is connected to the charging negative circuit 62, and the contactor may include a first contactor 21, and the first contactor 21 is disposed on the charging positive circuit 61 and the charging negative circuit 62.
Illustratively, referring to fig. 1, the discharging circuit may include a discharging positive circuit 71 and a discharging negative circuit 72, the main circuit 5 has a positive terminal and a negative terminal, the positive terminal of the main circuit 5 is connected with the discharging positive circuit 71, the negative terminal of the main circuit 5 is connected with the discharging negative circuit 72, the contactor may further include a second contactor 22, and the second contactor 22 is disposed on the discharging positive circuit 71 and the discharging negative circuit 72.
Illustratively, referring to fig. 1, the solution of the present disclosure may be applied to the inside of a battery pack, the battery pack is provided with a plurality of discharge ports 9, a positive terminal of each discharge port 9 is communicated with a discharge positive circuit 71, and a negative terminal of each discharge port 9 is communicated with a discharge negative circuit 72, so that when the second contactor 22 on the discharge positive circuit 71 is disconnected or the second contactor 22 on the discharge negative circuit 72 is disconnected, the connection circuit of all the discharge ports 9 and the battery 10 is disconnected, and the battery 10 stops discharging.
For example, referring to fig. 1, the battery pack is provided with a charging interface 8, a positive terminal of the charging interface 8 is connected to the positive charging circuit 61, and a negative terminal of the charging interface 8 is connected to the negative charging circuit 62, and when the first contactor 21 on the positive charging circuit 61 is disconnected or the first contactor 21 on the negative charging circuit 62 is disconnected, the connection circuit between the charging interface 8 and the battery 10 is disconnected, and the battery 10 stops charging.
It should be noted that the above preferred embodiments are only used for illustrating the principle of the present disclosure, and are not intended to limit the scope of the present disclosure. Without departing from the principles of the present disclosure, one skilled in the art can adjust the above-described arrangement so that the present disclosure can be applied to more specific application scenarios.
For example, there may be a plurality of charging ports 8, and the positive terminals of the plurality of charging ports 8 are all connected to the positive charging circuit 61, and the negative terminals of the plurality of charging ports 8 are all connected to the negative charging circuit 62. Thus, when the first contactor 21 on the charging positive circuit 61 is opened or the first contactor 21 on the charging negative circuit 62 is opened, all the charging interfaces 8 are disconnected from the battery 10, and the charging of the battery 10 is stopped.
For another example, the first contactor 21 may be one and disposed on the charging positive electrode circuit 61 or the charging negative electrode circuit 62, and when the first contactor 21 is opened, the charging of the battery 10 is stopped.
Similarly, the second contactor 22 may be disposed as one and disposed on the discharging positive circuit 71 or the discharging negative circuit 72, and when the second contactor 22 is opened, the discharging of the battery 10 is stopped.
It can be understood that a plurality of first contactors 21 may be respectively disposed on the charging positive circuit 61 and the charging negative circuit 62, a plurality of second contactors 22 may be respectively disposed on the discharging positive circuit 71 and the discharging negative circuit 72, and each first contactor 21 and each second contactor 22 are connected to the controller, which also can achieve the beneficial effects of the foregoing embodiments, and is not described herein again.
Illustratively, referring to fig. 1, the current detection device 4 may be a current sensor disposed in series on the main loop 5, and the current sensor is communicatively connected to the controller.
Alternatively, the current detection device 4 may also be a current divider and a current measurement device associated therewith, the current measurement device being communicatively connected to the controller. Since the usage of the flow divider is the prior art, the description is omitted here.
Alternatively, the current detection device 4 may also be a circuit characteristic value measurement device, and a current measurement module matched with the current detection device is integrated in the controller.
Specifically, the circuit characteristic value measuring device may be, for example, a voltage measuring device connected in parallel with the element having the fixed resistance value, the voltage measuring device being communicatively connected to the controller. The resistance value of the element is prestored in the controller, and after the signal of the voltage measuring device is received, the current measuring module performs conversion according to the prestored resistance value and the measured voltage value so as to determine the current value.
Optionally, the circuit breaker 3 is also in direct communication with a crash sensor for automatic opening in response to a crash signal generated by the crash sensor.
In the scheme, when the vehicle collides, the collision sensor sends a collision signal to the circuit breaker 3, and the circuit breaker 3 is automatically switched off in response to the collision signal of the collision sensor. In this way, when the vehicle collides, the breaker 3 can promptly interrupt the main circuit 5 to stop charging or discharging the battery 10, thereby avoiding occurrence of a short circuit or the like due to the collision and improving safety.
It should also be noted that, because the collision sensor is in direct communication with the circuit breaker 3, the collision signal of the collision sensor is directly sent to the circuit breaker 3, which can greatly shorten the reaction time, quickly cut off the circuit, and reduce the possibility of over-high temperature and even fire explosion caused by instantaneous short circuit.
For example, the circuit breaker 3 may complete the breaking operation within 3ms after receiving the impact signal of the impact sensor.
Through above-mentioned mode of setting up, under the non-collision condition, circuit breaker 3 can break off main loop 5 when battery current is greater than the maximum allowable current of contactor to directly break off main loop 5 when the collision, can promote the security of battery 10 greatly, reduce battery 10 because of the too big possibility that leads to high temperature or even explosion of electric current.
Exemplarily, fig. 3 is a schematic diagram of a connection structure of a circuit breaker 3 in a battery protection system according to still another exemplary embodiment. Referring to fig. 3, when the battery pack adopts Active Balance Management, the circuit breaker 3 and the impact sensor implement communication through ABM (english: Active Balance Management, chinese: Active Balance Management).
Optionally, the controller may also be configured to control the circuit breaker 3 to open to break the main circuit 5 in case the battery current is greater than or equal to the maximum allowed current of the contactor and less than or equal to the blowing current of the fuse 1.
With the above arrangement, when the battery current is greater than or equal to the maximum allowable current of the contactor and less than or equal to the fusing current of the fuse 1, the controller can control the circuit breaker 3 to be turned off, thereby quickly cutting off the main circuit 5.
Especially when the battery current approaches or reaches the fusing current of the fuse 1, since it takes a certain time for the fuse 1 to fuse, and the battery current continues for a certain time at an intensity approaching or reaching the fusing current, the risk of fire of the battery 10 is greatly increased. The circuit breaker 3 is used for cutting off the main loop 5 in the scheme, the response time is short, and the possibility that the battery 10 is too high in temperature and even is subjected to fire and explosion can be greatly reduced.
Referring to fig. 3, the controller may alternatively be a BMS (Battery Management System), and thus, the Battery protection System is integrated in the Battery pack, which can reduce interference from the external environment and increase reliability. Meanwhile, when the battery pack is separated from the vehicle body or the vehicle controller fails, the battery protection system can still reliably operate, so that the battery 10 can be better protected.
Alternatively, the controller may also be a vehicle control unit, which is connected in communication with the contactor, the circuit breaker 3 and the current detection device 4.
Alternatively, the vehicle control unit may be in direct communication with the contactor, the circuit breaker 3, and the current detection device 4 through a CAN (Controller Area Network, chinese).
Alternatively, the vehicle control unit may also implement communication with the contactor, the circuit breaker 3, and the current detection device 4 through the BMS.
Alternatively, the controller may also be a domain controller.
Illustratively, during the operation of the battery 10, the current information of the current detection device 4 is transmitted to the corresponding domain controller through the gateway, and when the domain controller judges that the contactor or the breaker 3 is to be cut off, the domain controller transmits the corresponding information to the contactor or the breaker 3 through the gateway to open the contactor or the breaker 3.
A second aspect of the present disclosure provides a battery protection method, fig. 4 is a flowchart of a battery protection method provided in an exemplary embodiment, and referring to fig. 4, the battery protection method may include:
step S11, detecting a battery current flowing through the battery;
the battery current may be detected directly by a current measuring device, for example, by a current detecting element disposed on the loop.
Alternatively, it may be obtained by measuring other characteristic values related to the battery current.
For example, the voltage across the element connected in series on the circuit may be measured and converted to a battery current by the voltage and the resistance value of the element.
For another example, the current of each loop can be measured, and the sum or difference of the measured current values can be calculated according to the series-parallel connection relation, so as to finally obtain the battery current.
And step S12, controlling a breaker arranged on a main circuit of the battery to open to cut off the main circuit when the current of the battery is larger than or equal to the maximum allowable current of a contactor arranged on a charging circuit and/or a discharging circuit of the battery.
So, when the biggest allowwing current that leads to battery current to surpass the contactor because of current overload, short circuit or because of the collision, can in time cut off the major loop through the circuit breaker, the circuit breaker response is rapid, can effectively protect the major loop, covers the protection blind area that contactor and fuse can't cover, reduces the battery because of the too big high possibility that leads to the high temperature or even the explosion on fire of electric current.
Fig. 5 is a flowchart of a battery protection method according to another exemplary embodiment. Referring to fig. 5, the method in fig. 4, before step S12, may further include: in step S13, it is determined whether the battery current is greater than or equal to a predetermined threshold, and a first determination result is generated.
Illustratively, the preset threshold corresponds to a battery current value at the time of overload. When the battery current is greater than or equal to the preset threshold value, the overload or short circuit is indicated.
Therefore, in a case where the first determination result is yes, step S12 is executed.
Exemplarily, referring to fig. 5, step S12 in fig. 4 may specifically include step S121 and step S122, and if the first determination result is yes, step S121 is executed: and judging whether the current of the battery is smaller than the maximum allowable current of the contactor, and generating a second judgment result.
If the second determination result is no, step S122 is executed: and controlling a breaker arranged on the main circuit of the battery to be opened so as to cut off the main circuit.
Exemplarily, referring to fig. 5, the method in fig. 4 may further include step S14, and in case that the second determination result is yes, step S14 is performed: and controlling a contactor arranged on a main loop of the battery to be opened so as to cut off the main loop.
In this way, the main circuit can be switched off directly by the contactor in the case of a battery current which is less than the maximum permissible current of the contactor.
The embodiments related to the main circuit, the discharging circuit and the charging circuit have been described in detail in the embodiments related to the system, and are not described in detail herein.
Illustratively, a prompting device can be further arranged in the vehicle, and under the condition that the first judgment result is yes, the prompting device is controlled to prompt alarm information corresponding to the overlarge battery current, so that a driver can timely know the battery state, and measures such as braking and leaving are taken to ensure the safety of personnel in the vehicle.
Illustratively, the prompting device may be an in-vehicle display.
Alternatively, the prompting device may also be an audio player in the vehicle.
Through the steps of S121, S122 and S14, the contactor or the breaker can be selected to disconnect the main loop according to the current of the battery when the battery is overloaded or short-circuited, so that the safety is improved, and meanwhile, the main loop can be cut off in time under the condition that the current of the battery exceeds a preset threshold value and does not reach the fusing current of the fuse, so that a protection blind area between the contactor and the fuse is eliminated.
Fig. 6 is a flowchart of a battery protection method according to yet another exemplary embodiment. Referring to fig. 6, for the method in fig. 5, step S12 may further include step S123, and in case that the second determination result is no, step S123 is executed: and judging whether the current of the battery is less than or equal to the fusing current of the breaker or not, and generating a third judgment result.
In the case where the third determination result is yes, step S122 is performed to break the main circuit by opening the circuit breaker.
For example, the maximum allowable current of the contactor is 1000A, the fusing current of the fuse is 3000A, and when the battery current is greater than a preset threshold value and less than 1000A, the contactor is controlled to be switched off so as to cut off the main loop; when the current of the battery is more than or equal to 1000A and less than or equal to 3000A, the main loop is cut off through a breaker; when the current of the battery is larger than 3000A, the fuse is automatically fused to disconnect the main loop.
Through the arrangement mode, even if the battery current reaches the fusing current of the fuse, the battery current is still cut off through the breaker. Since the fusing of the fuse takes a certain time and the battery current continues for a certain time at an intensity close to or up to the fusing current, the risk of the battery igniting is greatly increased. The main circuit is cut off through the circuit breaker in this scheme response time is rapid, can significantly reduce the possibility that the battery temperature is too high or even the explosion of catching fire.
Meanwhile, the battery current intervals corresponding to the contactor, the circuit breaker 3 and the fuse 1 can be accurately divided through the arrangement mode, the background can be controlled to accurately record working data conveniently, and if a fault occurs, the parts with the fault can be determined quickly, so that the defects can be found in time and improved, and the troubleshooting time is shortened.
A third aspect of the present disclosure provides a vehicle including a battery, and further including a battery protection system provided according to the first aspect of the present disclosure.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. For example, although the fuse is disposed between the plurality of battery cells in the exemplary embodiment, the fuse may be disposed at other positions of the main circuit, and the technical effects of the above-described embodiments can be achieved.
It should be noted that, in the above-mentioned embodiment, the various technical features can be combined in any suitable manner, for example, different numbers of the first contactor and the second contactor can be respectively arranged according to the needs of specific scenes. To avoid unnecessary repetition, the disclosure does not separately describe various possible combinations.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure as long as it does not depart from the gist of the present disclosure.
Claims (10)
1. A battery protection system, comprising:
a fuse disposed on a main circuit of the battery;
the contactor is arranged on a charging circuit and/or a discharging circuit of the battery;
a circuit breaker disposed on a main circuit of the battery;
current detection means for detecting a battery current flowing through the battery;
and the controller is in communication connection with the current detection device and the circuit breaker and is used for controlling the circuit breaker to be opened to cut off the main loop under the condition that the current of the battery is greater than or equal to the maximum allowable current of the contactor.
2. The battery protection system of claim 1, wherein the circuit breaker is further in direct communication with a crash sensor for automatic opening in response to a crash signal generated by the crash sensor.
3. The battery protection system of claim 1, wherein the controller is configured to control the circuit breaker to open to break the main circuit if the battery current is greater than or equal to a maximum allowable current of the contactor and less than or equal to a fuse current of the fuse.
4. The battery protection system of claim 1, wherein the controller is further communicatively coupled to the contactor for controlling the contactor to open if the battery current is greater than or equal to a predetermined current threshold and less than a maximum allowable current of the contactor.
5. The battery protection system of claim 4, wherein the contactor comprises a first contactor disposed on the charging loop, and wherein the controller is configured to control the first contactor to open if the battery current is greater than or equal to a preset current threshold and less than a maximum allowable current of the first contactor when the battery is in the charging mode.
6. The battery protection system of claim 4, wherein the contactor comprises a second contactor disposed on the discharge circuit, and the controller is configured to control the second contactor to open if the battery current is greater than or equal to a preset current threshold and less than a maximum allowable current of the second contactor when the battery is in a discharge mode.
7. The battery protection system of any one of claims 1-6, wherein the controller is one of: battery management system, domain controller, vehicle control unit.
8. A method of protecting a battery, comprising:
detecting a battery current flowing through the battery;
and controlling a breaker arranged on a main loop of the battery to be opened so as to break the main loop under the condition that the current of the battery is greater than or equal to the maximum allowable current of a contactor arranged on a charging loop and/or a discharging loop of the battery.
9. The battery protection method of claim 8, further comprising:
and controlling the contactor to be opened under the condition that the battery current is greater than or equal to a preset current threshold value and is less than the maximum allowable current of the contactor.
10. A vehicle comprising a battery, characterized by further comprising the battery protection system according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110097442.2A CN114792965A (en) | 2021-01-25 | 2021-01-25 | Battery protection system, battery protection method and vehicle |
| PCT/CN2021/141800 WO2022156493A1 (en) | 2021-01-25 | 2021-12-27 | Battery protection system, battery protection method, vehicle, device, program and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110097442.2A CN114792965A (en) | 2021-01-25 | 2021-01-25 | Battery protection system, battery protection method and vehicle |
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| CN114792965A true CN114792965A (en) | 2022-07-26 |
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| CN202110097442.2A Pending CN114792965A (en) | 2021-01-25 | 2021-01-25 | Battery protection system, battery protection method and vehicle |
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| CN (1) | CN114792965A (en) |
| WO (1) | WO2022156493A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023236451A1 (en) * | 2022-06-08 | 2023-12-14 | 广州小鹏汽车科技有限公司 | Short-circuit protection system, and traction battery system of electric vehicle |
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| DE10103336C1 (en) * | 2001-01-25 | 2002-12-05 | Dialog Semiconductor Gmbh | Charge / discharge protection circuit for a rechargeable battery |
| CN102646960B (en) * | 2011-02-22 | 2016-10-05 | 北京科易动力科技有限公司 | A kind of battery major loop interface protection circuit and guard method |
| US9362544B2 (en) * | 2013-02-26 | 2016-06-07 | GM Global Technology Operations LLC | Systems and methods for control of a current interruption component in a battery system |
| CN207234401U (en) * | 2017-10-09 | 2018-04-13 | 中航锂电（洛阳）有限公司 | A kind of accumulation power supply system |
| CN207652031U (en) * | 2017-12-29 | 2018-07-24 | 国网江苏省电力有限公司电力科学研究院 | A kind of lithium battery control protective unit for uninterrupted DC power system |
| KR102264409B1 (en) * | 2018-03-16 | 2021-06-21 | 주식회사 엘지에너지솔루션 | Integrated switching apparatus |
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2021
- 2021-01-25 CN CN202110097442.2A patent/CN114792965A/en active Pending
- 2021-12-27 WO PCT/CN2021/141800 patent/WO2022156493A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236451A1 (en) * | 2022-06-08 | 2023-12-14 | 广州小鹏汽车科技有限公司 | Short-circuit protection system, and traction battery system of electric vehicle |
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| WO2022156493A1 (en) | 2022-07-28 |
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