CN212848573U - Power battery water cooling system - Google Patents
Power battery water cooling system Download PDFInfo
- Publication number
- CN212848573U CN212848573U CN202021498422.3U CN202021498422U CN212848573U CN 212848573 U CN212848573 U CN 212848573U CN 202021498422 U CN202021498422 U CN 202021498422U CN 212848573 U CN212848573 U CN 212848573U
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- Prior art keywords
- battery
- water
- water cooling
- power battery
- temperature
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000001816 cooling Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 3
- 230000005494 condensation Effects 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 239000000110 cooling liquid Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
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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
-
- 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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- Secondary Cells (AREA)
Abstract
The utility model discloses a power battery water cooling system, power battery are equipped with water cooling mechanism outward, water cooling mechanism is equipped with water inlet and delivery port, connects be equipped with electronic water pump, heat exchanger, PTC on the pipeline of water inlet and delivery port and constitute circulation circuit, another group pipe interface of heat exchanger is through the pipe connection vehicle air conditioner condensation medium circulation circuit that is equipped with electronic expansion valve. The utility model discloses the battery adopts the water-cooling heat dissipation, can improve the radiating efficiency of battery greatly, is equipped with water PTC heating simultaneously, guarantees the charging efficiency of battery at low temperature to the part of quoting is current device, and the system equipment is with low costs.
Description
Technical Field
The utility model relates to a new energy automobile field especially relates to new energy automobile battery heat dissipation technology.
Background
With the support of national policies and the development of technologies, new energy vehicles are gradually accepted by consumers, the installed capacity of a battery system, which is one of core components of the new energy vehicles, is rapidly increased in recent years, but due to the sensitivity of a battery cell of the battery system to temperature, the ignition phenomenon of batteries of electric vehicles often occurs, and at present, the safety performance of the batteries can be improved only by a method for enhancing the stability of the batteries and improving the heat dissipation capacity, but the existing improvement scheme still has the defects, the cost is too high, or the safety cannot be guaranteed.
Disclosure of Invention
The utility model aims to solve the technical problem that realize an economy, reliable electric automobile battery's thermal management system, can remain the temperature of battery suitable operating temperature within range throughout to guarantee the high-efficient safe work of battery.
In order to realize the purpose, the utility model discloses a technical scheme be: the utility model provides a power battery water cooling system, the power battery is equipped with water cooling mechanism outward, water cooling mechanism is equipped with water inlet and delivery port, connects be equipped with electronic water pump, heat exchanger, PTC on the pipeline of water inlet and delivery port and constitute circulation circuit, another group pipe connection of heat exchanger is through the pipe connection vehicle air conditioner condensation medium circulation circuit that is equipped with electronic expansion valve.
The automobile air conditioner condensing medium circulation loop comprises a condenser, an evaporator and a compressor, wherein the electronic expansion valve, the compressor and the condenser are sequentially connected to a pipeline and connected to a pipe joint of the heat exchanger, and the evaporator is connected to two ends of the compressor and the condenser through a three-way pipeline.
The system is provided with a controller, and the controller is connected with a control unit of the automobile air conditioner, the electronic water pump, the PTC and the electronic expansion valve through signal lines.
All be equipped with a temperature sensor in water cooling mechanism's the water inlet and the outlet port, be equipped with the battery temperature sensor of at least one collection battery package temperature in power battery's the battery package, temperature sensor and battery temperature sensor all pass through signal line connection director and carry the temperature signal who gathers to the controller.
The utility model discloses the battery adopts the water-cooling heat dissipation, can improve the radiating efficiency of battery greatly, is equipped with water PTC heating simultaneously, guarantees the charging efficiency of battery at low temperature to the part of quoting is current device, and the system equipment is with low costs.
Drawings
The following is a brief description of the contents expressed by each figure in the specification of the present invention:
fig. 1 is a schematic diagram of a water cooling system of a power battery.
Detailed Description
The following description of the embodiments with reference to the drawings is intended to illustrate the present invention in further detail, such as the shapes and structures of the components, the mutual positions and connections between the components, the functions and working principles of the components, the manufacturing process, and the operation and use methods, etc., so as to help those skilled in the art understand the present invention more completely, accurately and deeply.
The power battery water cooling system is an improvement of the existing power battery water cooling system, a water cooling mechanism is arranged outside the existing power battery, the water cooling mechanism is provided with a water inlet and a water outlet, and a pipeline for connecting the water inlet and the water outlet is provided with an electronic water pump, a heat exchanger and a PTC to form a circulation loop.
As shown in figure 1, the heat exchanger is connected with an automobile air conditioning system, and the other group of pipe joints of the heat exchanger are connected with an automobile air conditioning condensing medium circulation loop through a pipeline provided with an electronic expansion valve. The automobile air conditioner condensing medium circulation loop comprises a condenser, an evaporator and a compressor, wherein the electronic expansion valve, the compressor and the condenser are sequentially connected to a pipeline and connected to a pipe joint of the heat exchanger, and the evaporator is connected to two ends of the compressor and the condenser through a three-way pipeline.
In order to facilitate control, the system is provided with a controller, and the controller is connected with a control unit, an electronic water pump, a PTC and an electronic expansion valve of the automobile air conditioner through signal lines. The water cooling mechanism is characterized in that a water temperature sensor is arranged in a water inlet and a water outlet of the water cooling mechanism, at least one battery temperature sensor for collecting the temperature of the battery pack is arranged in the battery pack of the power battery, and the water temperature sensor and the battery temperature sensor are connected with the controller through signal lines and transmit collected temperature signals to the controller.
An electronic water pump: receiving BMS control and outputting required flow;
a compressor: compressing the refrigerant;
electronic expansion valve of heat exchanger: adjusting the opening of the crusher according to BMS requirements;
a compressor: receiving VCU control and outputting required rotating speed;
battery water heating PTC: switching on and off and controlling voltage according to BMS requirements.
The specific working principle is as follows:
when the highest temperature of the battery exceeds a set threshold value, the control system starts the compressor, the electronic water pump and the electronic expansion valve, water circulation starts, high-temperature water at the outlet of the battery is cooled by a chiller (heat exchanger) and then becomes low-temperature cooling water to return to the battery pack for cooling, and the electronic expansion valve can adjust the opening degree of a valve port at any time to ensure the cooling requirements of the passenger compartment and the battery.
When the lowest temperature of the battery is lower than a set threshold value, the control system starts the electronic water pump and the hydrothermal PTC, circulating water is heated, and then the circulating hot water flows in the whole battery pack, so that heat is transferred to the battery, and the temperature of the battery is improved.
Specific control method also can be set for as required, the utility model discloses only protect its hardware architecture, available control logic for example:
1. high temperature cooling
BMS demand compressor speed n 1; the refrigerating power corresponding to the BMS required compressor rotating speed n1 is P1; the indoor requirement rotating speed of the air conditioner is n 2; the refrigerating power corresponding to the required rotating speed n2 in the air-conditioning room is P2; the total required speed n of the compressor; the upper limit of the compressor speed nmax.
Fast and slow charging
When the charging is fast and slow, the BMS requests the VCU for the rotating speed n1 of the compressor according to the requirement, the VCU compares the total required rotating speed n of the compressor corresponding to P1+ P2 with nmax, and MIN (n, nmax) is taken to control the rotating speed of the compressor. The refrigeration demand of battery is fully ensured in the process of filling soon, and the corresponding aperture is opened according to the battery demand to the giller aperture.
And when the Tmax is larger than or equal to 38 ℃, the chiller opens the maximum opening, and the battery demands the refrigeration power P. And (3) acquiring the temperature of a water inlet in real time, judging the water inlet temperature and the water outlet temperature of the cooling liquid when the temperature of the water inlet is reduced to 25 ℃, and adjusting the corresponding opening of the condenser and the required refrigerating power P of the battery. Until T1 < 30 ℃, the teller is turned off, the loop is closed, and if T1 rises to 38 ℃ and lasts for 30S, the process jumps to b.
Discharge of electricity
During discharging, the BMS requests the VCU for the compressor rotating speed n1 according to the requirement, the VCU compares the total required compressor rotating speed n corresponding to P1+ P2 with nmax, and MIN (n, nmax) is taken to control the compressor rotating speed. And controlling the opening BMS of the expander electronic expansion valve according to the calibration result and the project decision.
control of the opening of the miller
P＝P1+P2
Wherein: p1 ═ T2' -20 ═ 3281 ═ 1.073 ═ qv; p2 ═ (T2-20) × 3281 ═ 1.073 ═ qv
Note: p: actual required refrigeration power, i.e., water side capacity; p1: theoretically requiring refrigeration power; p2: a required refrigeration power correction value; qv: volume flow (calculated as 12L/min); t2': the temperature of the outlet of the battery pack; t2: the inlet temperature of the battery pack.
2. Low temperature heating
Quick charger
a. When the temperature is more than 0 ℃ and less than T1' < 15 ℃, the BMS starts the PTC and the electronic water pump and starts charging, and the heating process is carried out while charging. And (3) acquiring the temperature of the water inlet in real time, judging the water inlet temperature of the cooling liquid and the temperature rise of the cooling liquid when the temperature of the water inlet reaches 38 +/-1 ℃, and adjusting the corresponding PTC voltage to maintain the water inlet at 38 +/-10 ℃. And (3) closing the PTC until the temperature T1' is not less than 15 ℃, closing the circulation and entering a pure charging process.
b. When the temperature is more than 20 ℃ below zero and less than or equal to 0 ℃ T1', the BMS starts the PTC and the electronic water pump and enters the heating process. And (3) acquiring the temperature of the water inlet in real time, judging the water inlet temperature of the cooling liquid and the temperature rise of the cooling liquid when the temperature of the water inlet reaches 38 +/-1 ℃, and adjusting the corresponding PTC voltage to maintain the water inlet at 38 +/-10 ℃. In the process, when the temperature is more than 0 ℃ and less than T1' and less than 15 ℃, the BMS starts charging and enters a heating process while charging. And (3) closing the PTC until the temperature T1' is not less than 15 ℃, closing the circulation and entering a pure charging process.
The present invention has been described above with reference to the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments described above, and that the invention is not limited to the specific embodiments described above, but rather is intended to cover various insubstantial modifications of the inventive method and solution, or its application to other applications without modification.
Claims (4)
1. The utility model provides a power battery water cooling system, the power battery is equipped with water cooling mechanism outward, water cooling mechanism is equipped with water inlet and delivery port, its characterized in that: and the other group of pipe interfaces of the heat exchanger are connected with a condensation medium circulation loop of the automobile air conditioner through a pipeline provided with an electronic expansion valve.
2. The power battery water cooling system according to claim 1, characterized in that: the automobile air conditioner condensing medium circulation loop comprises a condenser, an evaporator and a compressor, wherein the electronic expansion valve, the compressor and the condenser are sequentially connected to a pipeline and connected to a pipe joint of the heat exchanger, and the evaporator is connected to two ends of the compressor and the condenser through a three-way pipeline.
3. The power battery water cooling system according to claim 2, characterized in that: the system is provided with a controller, and the controller is connected with a control unit of the automobile air conditioner, the electronic water pump, the PTC and the electronic expansion valve through signal lines.
4. The power battery water cooling system according to claim 3, characterized in that: all be equipped with a temperature sensor in water cooling mechanism's the water inlet and the outlet port, be equipped with the battery temperature sensor of at least one collection battery package temperature in power battery's the battery package, temperature sensor and battery temperature sensor all pass through signal line connection director and carry the temperature signal who gathers to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021498422.3U CN212848573U (en) | 2020-07-23 | 2020-07-23 | Power battery water cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021498422.3U CN212848573U (en) | 2020-07-23 | 2020-07-23 | Power battery water cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212848573U true CN212848573U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021498422.3U Active CN212848573U (en) | 2020-07-23 | 2020-07-23 | Power battery water cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212848573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410541A (en) * | 2021-05-21 | 2021-09-17 | 江苏葑全新能源动力科技有限公司 | Battery cooling device for battery replacing vehicle |
| CN116198275A (en) * | 2022-12-23 | 2023-06-02 | 河南德力新能源汽车有限公司 | Electric automobile air conditioner and power battery thermal management control system and control method |
-
2020
- 2020-07-23 CN CN202021498422.3U patent/CN212848573U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410541A (en) * | 2021-05-21 | 2021-09-17 | 江苏葑全新能源动力科技有限公司 | Battery cooling device for battery replacing vehicle |
| CN116198275A (en) * | 2022-12-23 | 2023-06-02 | 河南德力新能源汽车有限公司 | Electric automobile air conditioner and power battery thermal management control system and control method |
| CN116198275B (en) * | 2022-12-23 | 2024-01-23 | 德力新能源汽车有限公司 | Electric automobile air conditioner and power battery thermal management control system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220424 Address after: 475000 No.99 Songcheng Road, Kaifeng District, Henan pilot Free Trade Zone, Kaifeng City, Henan Province Patentee after: Chery Automobile Henan Co.,Ltd. Address before: 241000 Building 8, science and Technology Industrial Park, 717 Zhongshan South Road, Yijiang District, Wuhu City, Anhui Province Patentee before: Chery Commercial Vehicles (Anhui) Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240318 Address after: 241000 No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, China Patentee after: CHERY AUTOMOBILE Co.,Ltd. Country or region after: China Address before: 475000 No.99 Songcheng Road, Kaifeng District, Henan pilot Free Trade Zone, Kaifeng City, Henan Province Patentee before: Chery Automobile Henan Co.,Ltd. Country or region before: China |