CN214428677U - Lithium battery protection system for monitoring leakage of water-cooling liquid - Google Patents
Lithium battery protection system for monitoring leakage of water-cooling liquid Download PDFInfo
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- CN214428677U CN214428677U CN202120894717.0U CN202120894717U CN214428677U CN 214428677 U CN214428677 U CN 214428677U CN 202120894717 U CN202120894717 U CN 202120894717U CN 214428677 U CN214428677 U CN 214428677U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a lithium battery protection system of control water-cooling liquid leakage, it is including setting up in the moisture meter of lithium cell case, the controlling means who is connected with the moisture meter electricity and the alarm device who is connected with the controlling means electricity, and the moisture meter CAN detect the air humidity of lithium cell incasement, and controlling means is BMS central controller dsp and is connected with on-vehicle monitored control system and lithium battery charging system through the CAN bus. The moisture meter can detect the leakage of a trace amount of cooling liquid, has high detection sensitivity and quick response, can immediately send out warning at the first time of leakage, and can reserve enough reaction time for passengers, thereby ensuring the life safety of the passengers; the moisture meter does not need to be installed in a large quantity, the occupied space is small, the original lithium battery box structure is not influenced, and the cost is reduced; meanwhile, by arranging the charging protection device, the output protection device and the cooling protection device, the power connection of the lithium battery can be cut off in time, the safety of the lithium battery is guaranteed, and the time for passengers to deal with the leakage of the cooling liquid is prolonged.
Description
Technical Field
The utility model relates to a lithium battery protection technical field especially relates to a lithium battery protection system that control water-cooling liquid leaked.
Background
With the large-scale use of the water cooling system of the new energy automobile, especially in a battery system of a vehicle, the water cooling system is configured in a large number in order to reduce the working temperature of electric elements such as a battery. The cooling liquid flows in the water cooling pipeline of the water cooling system, so that the leakage of the cooling liquid is inevitable. If the leakage contacts the conductive part, the danger such as fire and explosion of the battery pack can be caused, so that the detection of the leakage of the water cooling pipeline and the early warning in time become important.
The existing cooling liquid detection is mainly carried out through a liquid level sensor, a liquid leakage detection belt or a point type sensor, wherein: the liquid level sensor gives out a warning when the liquid level of the cooling liquid changes to a certain degree, the detection has certain hysteresis, the reaction time of passengers in the vehicle is seriously shortened, and even danger occurs; the leakage detection belt is formed by completely covering the cooling plate and the flow channel in the battery pack, the detection reaction speed is high, the sensitivity is high, but the cooling plate and the flow channel are required to be completely wrapped by the leakage detection belt, so that higher material cost is generated; the spot sensors need to be installed at the leak-prone position of the cooling plate or the bottom of the battery compartment, and although the cost is reduced compared to the leak detection zone, they still require a certain number of spot sensors, which is costly.
The prior art also discloses a detection device is revealed to cooling liquid in battery package, and its up end at the cooling plate in the battery package has laid the plastic film and the lower terminal surface of plastic film is equipped with first detection circuitry, and the up end is equipped with the second detection circuitry. When a small amount of leakage liquid appears at the upper end of the cooling plate, the plastic film forms a bulge, and the cooling liquid in the bulge is communicated with the first detection circuit. When the first detection circuit is communicated, a current signal is generated and uploaded to a central control of the automobile, and the central control can send a first-level warning to a driver after receiving the current signal to prompt the driver to go to overhaul as soon as possible. When a large amount of liquid leakage appears on the upper end surface of the cooling plate, the plastic film is damaged, and the overflowing cooling liquid is communicated with the second detection circuit, so that the central control sends out secondary warning to prompt a driver to stop safely and flameout immediately.
The scheme can realize leakage detection when the cooling liquid leakage detection device in the battery pack leaks a small amount of cooling liquid, has high sensitivity of leakage detection, and can perform two-stage detection according to the threat degree of the cooling liquid to the battery pack. But it needs to lay a large amount of plastic films and circuits, increases the occupied space and has high cost.
In view of the above, there is a need for an improved lithium battery protection system for monitoring leakage of water-cooling liquid to solve the above-mentioned problems of poor detection sensitivity, high cost and excessive space occupation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lithium battery protection system that control water-cooling liquid leaked, detection coolant liquid that can be quick leaks and sends out the warning, and occupation space is little, does not influence original lithium cell case structure, reduce cost.
For the purpose of the utility model, the utility model provides a lithium battery protection system that control water-cooling liquid leaked, including set up in the lithium cell incasement moisture meter, with the controlling means that the moisture meter electricity is connected and with the alarm device that the controlling means electricity is connected, moisture meter CAN detect air humidity in the lithium cell incasement, controlling means is BMS central controller dsp and is connected with on-vehicle monitored control system and lithium battery charging system through the CAN bus.
As a further improvement of the present invention, the control device includes a charging protection module electrically connected to the lithium battery charging system.
As a further improvement of the present invention, the control device further includes an output protection module electrically connected to the lithium battery output system.
As a further improvement, the lithium battery protection system that the control water-cooling liquid leaked still includes lithium battery detection device, lithium battery detection device include with what the controlling means electricity was connected can detect the temperature sensor of lithium cell temperature and can detect the voltage sensor of the voltage of lithium cell.
As a further improvement of the present invention, the lithium battery detection device further includes a current sensor connected in series to the lithium battery and the load, the current sensor can detect the current passing through the lithium battery.
As a further improvement of the present invention, the control device further comprises a cooling protection module electrically connected to the cooling system and electrically connected to the control device.
As a further improvement, the alarm device is electrically connected with the danger alarm flash lamp.
As a further improvement of the utility model, the alarm device comprises an alarm indicator light.
As a further improvement of the utility model, the alarm device further comprises a loudspeaker.
As a further improvement of the present invention, the control device is provided with a communication interface, and the communication interface is an RS-232 interface.
The utility model has the advantages that:
1. the utility model can detect the leakage of a small amount of cooling liquid by arranging the moisture meter, has high detection sensitivity and quick response, can immediately send an electric signal to the control device and make the alarm device send a warning at the first time of leakage, and reserve enough reaction time for passengers, thereby ensuring the life safety of the passengers; and the moisture meter does not need to be installed in a large number, and the occupied space is small, so that the original lithium battery box structure is not influenced, the cost is reduced, and the practicability is high.
2. Through setting up the protection module that charges, can in time cut off lithium battery charging system when the coolant liquid takes place to leak to the electric current of lithium cell, avoid further harm, guarantee battery safety, the practicality is strong.
3. Through setting up the output protection module, can in time cut off the output of lithium cell when the coolant liquid leaks, avoid causing further harm, guarantee battery safety, avoid the vehicle out of control, the practicality is strong.
4. Through setting up cooling protection module, can be when the lithium cell high temperature, control cooling system cools down to the lithium cell, can be when the coolant liquid leaks, control cooling system reduces operating power, especially reduces operating pressure to slow down coolant liquid leakage speed, the practicality is strong.
5. Through setting up and being connected with the danger warning flash light electricity, when the coolant liquid leaked, can open the danger warning flash light in step to other vehicles that the suggestion went around avoid causing the traffic accident, the practicality is strong.
Drawings
Fig. 1 is a schematic diagram of a lithium battery protection system for monitoring leakage of water-cooling liquid according to the present invention;
FIG. 2 is a schematic structural diagram of the control device in FIG. 1;
fig. 3 is a schematic structural diagram of the lithium battery detection device in fig. 1.
Reference numerals:
1-moisture meter; 2-a control device; 21-a charge protection module; 22-an output protection module; 23-cooling the protection module; 24-a communication interface; 3-an alarm device; 4-a lithium battery detection device; 41-temperature sensor; 42-a voltage sensor; 43-Current sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.
In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The new energy automobile comprises a lithium battery box, a lithium battery charging system, a lithium battery output system, a cooling system, a danger alarm flash lamp, a vehicle-mounted monitoring system and a driving computer.
Please refer to fig. 1, the utility model discloses a lithium battery protection system of control water-cooling liquid leakage, it is including setting up moisture meter 1 in the lithium cell box, controlling means 2 of being connected with moisture meter 1 electricity and the alarm device 3 of being connected with controlling means 2 electricity, moisture meter 1 CAN detect the air humidity of lithium cell box, and controlling means is BMS central controller dsp and is connected with on-vehicle monitored control system and lithium battery charging system through the CAN bus. The moisture meter 1 can detect the leakage of a trace amount of cooling liquid, has high detection sensitivity and quick response, can immediately send an electric signal to the control device 2 at the first time of leakage and make the alarm device 3 send a warning, so that the sufficient reaction time is left for passengers, and the life safety of the passengers is guaranteed; and moisture meter 1 need not a large amount of installations, and occupation space is little, does not influence original lithium cell case structure, reduce cost, and the practicality is strong.
Specifically, referring to fig. 2, the control device 2 includes a charging protection module 21 electrically connected to the lithium battery charging system. Through setting up the protection module 21 that charges, can in time cut off the electric current of lithium battery charging system to the lithium cell when the coolant liquid takes place to leak, avoid further harm, guarantee battery safety, the practicality is strong.
Specifically, referring to fig. 2, the control device 2 further includes an output protection module 22 electrically connected to the lithium battery output system. Through setting up output protection module 22, can in time cut off the output of lithium cell when the coolant liquid leaks, avoid causing further harm, guarantee battery safety, avoid the vehicle out of control, the practicality is strong.
Specifically, referring to fig. 3, the lithium battery protection system for monitoring leakage of the water-cooling liquid further includes a lithium battery detection device 4, and the lithium battery detection device 4 includes a temperature sensor 41 electrically connected to the control device 2 and capable of detecting a temperature of the lithium battery and a voltage sensor 42 capable of detecting a voltage of the lithium battery. Through setting up temperature sensor 41 and voltage sensor 42, can real time monitoring lithium cell's temperature and voltage, ensure that the lithium cell normally works, avoid arousing the incident because of the battery is overheated, the practicality is strong.
Specifically, referring to fig. 3, the lithium battery detection device 4 further includes a current sensor 43 connected in series with the lithium battery and the load, and the current sensor 43 can detect the current passing through the lithium battery. Through setting up current sensor 43, can real-time supervision pass through the electric current of load to give controlling means 2 with current information transmission, can in time cut off power output when the electric current is unusual, avoid causing the incident, the practicality is strong.
Specifically, referring to fig. 2, the control device 2 further includes a cooling protection module 23 electrically connected to the cooling system. Through setting up cooling protection module 23, can be when the lithium cell high temperature, control cooling system cools down the lithium cell, can be when the coolant liquid leaks, control cooling system reduces operating power, especially reduces operating pressure to slow down coolant liquid leakage speed, the practicality is strong.
Specifically, referring to fig. 1, the alarm device 3 is electrically connected to a hazard flasher. Through setting up and being connected with the danger warning flash light electricity, when the coolant liquid leaked, can open the danger warning flash light in step to other vehicles that the suggestion went around avoid causing the traffic accident, the practicality is strong.
Specifically, referring to fig. 1, the alarm device 3 includes an alarm indicator and a speaker. Through setting up alarm indicator and speaker, when the coolant liquid leaked, can remind the passenger immediately, give sufficient reaction time, ensure personal safety, the practicality is strong.
Specifically, referring to fig. 1, the control device 2 is provided with a communication interface 24, and the communication interface 24 is an RS-232 interface. The communication interface 24 is arranged, so that the traveling crane computer can be conveniently connected to exchange data.
The utility model discloses a lithium battery protection system that control water-cooling liquid leaked at during operation:
the cooling liquid leaks and volatilizes into the lithium battery box, and when the moisture meter detects that the air humidity reaches a certain threshold value, a signal is sent to the BMS central controller dsp;
or when the lithium battery detection device 4 detects that the temperature, the voltage or the current of the lithium battery are abnormal, a signal is sent to the BMS central controller dsp;
when the BMS central controller dsp receives the signal, the warning device 3 is controlled to send out sound and flash the warning indicator lamp, and the danger warning flash lamp is controlled to be turned on at the same time to warn passengers and surrounding vehicles;
when the BMS central controller dsp receives the signal, the output of the lithium battery is cut off through the output protection module 22, and the cooling system is controlled to reduce the working power through the cooling protection module 23 so as to reduce the load of the lithium battery and slow down the leakage speed of the cooling liquid;
when the battery is in a charging state and the BMS central controller dsp receives the signal, the power supply of the lithium battery charging system to the lithium battery is cut off through the charging protection module 21 to reduce the load of the lithium battery.
In summary, the utility model can detect the leakage of a small amount of cooling liquid by arranging the moisture meter 1, has high detection sensitivity and quick response, can immediately send an electric signal to the control device 2 and make the alarm device 3 send a warning at the first time of leakage, and can reserve enough reaction time for passengers, thereby ensuring the life safety of the passengers; the moisture meter 1 does not need to be installed in a large quantity, the occupied space is small, the original structure of the lithium battery box is not influenced, and the cost is reduced; meanwhile, by arranging the output protection module 22 and the charging protection module 21, the power output and input of the lithium battery can be cut off in time, so that further damage is avoided; and by arranging the cooling protection module 23, the cooling system can be controlled to reduce the working power, particularly the working pressure, so as to slow down the leakage speed of the cooling liquid.
The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a lithium battery protection system that control water-cooling liquid leaked, its characterized in that, including set up in the lithium cell incasement moisture meter, with the controlling means that moisture meter electricity is connected and with the alarm device that the controlling means electricity is connected, moisture meter CAN detect air humidity in the lithium cell incasement, controlling means is BMS central control ware dsp and is connected with on-vehicle monitored control system and lithium battery charging system through the CAN bus.
2. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, wherein said control means comprises a charging protection module electrically connected to a lithium battery charging system.
3. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, wherein said control device further comprises an output protection module electrically connected to the lithium battery output system.
4. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, further comprising a lithium battery detection device, said lithium battery detection device comprising a temperature sensor electrically connected with said control device and capable of detecting temperature of lithium battery and a voltage sensor capable of detecting voltage of said lithium battery.
5. The lithium battery protection system for monitoring leakage of water-cooled liquid of claim 4, wherein the lithium battery detection device further comprises a current sensor connected in series with the lithium battery and a load, the current sensor capable of detecting current through the lithium battery.
6. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, wherein said control device further comprises a cooling protection module electrically connected to the cooling system.
7. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, wherein said alarm device is electrically connected to a hazard warning flash lamp.
8. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, wherein said alarm device comprises an alarm indicator light.
9. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, wherein said alarm device further comprises a speaker.
10. The lithium battery protection system for monitoring leakage of water-cooling liquid as claimed in claim 1, wherein said control device is provided with a communication interface, and said communication interface is an RS-232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120894717.0U CN214428677U (en) | 2021-04-28 | 2021-04-28 | Lithium battery protection system for monitoring leakage of water-cooling liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120894717.0U CN214428677U (en) | 2021-04-28 | 2021-04-28 | Lithium battery protection system for monitoring leakage of water-cooling liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214428677U true CN214428677U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120894717.0U Active CN214428677U (en) | 2021-04-28 | 2021-04-28 | Lithium battery protection system for monitoring leakage of water-cooling liquid |
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| CN (1) | CN214428677U (en) |
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2021
- 2021-04-28 CN CN202120894717.0U patent/CN214428677U/en active Active
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