CN115764058A - Electrochemical energy storage thermal management system - Google Patents
Electrochemical energy storage thermal management system Download PDFInfo
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- CN115764058A CN115764058A CN202211444255.8A CN202211444255A CN115764058A CN 115764058 A CN115764058 A CN 115764058A CN 202211444255 A CN202211444255 A CN 202211444255A CN 115764058 A CN115764058 A CN 115764058A
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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 invention discloses an electrochemical energy storage and heat management system, which comprises: the refrigeration/heating system mainly comprises a compressor, an oil separator, a four-way reversing valve, a throttle valve, a heat exchanger and a plate heat exchanger, a water-water heat exchange system mainly comprises a cooling tower and a water-heat exchange plate heat exchanger, and a battery liquid cooling system mainly comprises a water tank and a liquid cooling plate, wherein the heat exchange side of the plate heat exchanger is connected with the water tank through a first pumping pipeline, a refrigerant and a temperature regulating heater are arranged in the water tank, the cooling tower is connected with the water-heat exchange plate heat exchanger through a fourth pumping pipeline, the water-heat exchange plate heat exchanger is connected with the water tank through a fifth pumping pipeline, the plate heat exchanger can be used as an evaporator to cool a secondary refrigerant and can also be used as a condenser to heat the secondary refrigerant, and when the ambient temperature is close to the temperature required by a battery, the water-heat exchange plate heat exchanger only participates in heat exchange. The system can enable the energy storage battery to work in a required temperature range, and simultaneously achieve the purposes of energy conservation and environmental protection.
Description
Technical Field
The present invention relates to electrochemical energy storage devices, and more particularly to thermal management systems for electrochemical energy storage devices.
Background
The temperature is a key factor influencing the performance of the energy storage battery, and the overheating and overcooling phenomena of the battery can influence the capacity, the service life and the energy efficiency of the energy storage battery.
Large electrochemical energy storage power stations are equipped with battery thermal management systems to keep the battery temperature within a normal range. The battery heat dissipation method in the prior art has various modes such as air heat dissipation, liquid cooling heat dissipation, solid phase change material heat dissipation, heat pipe heat dissipation and the like.
At present, liquid cooling heat dissipation is direct and rapid, and has comparative advantages, however, the energy consumption of liquid cooling heat dissipation is high, and the control is not easy.
Disclosure of Invention
The invention aims to provide an electrochemical energy storage thermal management system which can provide various temperature management requirements for electrochemical energy storage equipment.
To this end, the invention provides an electrochemical energy storage thermal management system comprising: the refrigeration/heating system mainly comprises a compressor, an oil separator, a four-way reversing valve, a throttle valve, a heat exchanger and a plate heat exchanger, a water-water heat exchange system mainly comprises a cooling tower and a water-heat exchange plate heat exchanger, and a battery liquid cooling system mainly comprises a water tank and a liquid cooling plate, wherein the heat exchange side of the plate heat exchanger is connected with the water tank through a first pumping pipeline, a refrigerant and a temperature regulating heater are arranged in the water tank, the water tank is connected with the liquid cooling plate through a second pumping pipeline, the cooling tower and the heat exchanger are connected through a third pumping pipeline and are connected with the water-heat exchange plate heat exchanger through a fourth pumping pipeline, the water-heat exchange plate heat exchanger is connected with the water tank through a fifth pumping pipeline, wherein when the ambient temperature is higher than the temperature required by a battery, the plate heat exchanger serves as an evaporator to cool the refrigerant, when the ambient temperature is lower than the temperature required by the battery, the plate heat exchanger serves as a condenser to heat the refrigerant, and when the ambient temperature is close to the temperature required by the battery, the water-heat exchange plate heat exchanger participates in heat exchange.
Furthermore, the first pumping pipeline and the fifth pumping pipeline share one water pump, and the third pumping pipeline and the fourth pumping pipeline share one water pump.
Furthermore, the battery liquid cooling system also comprises a water separator and a water collector, which are used for distributing cooling pipelines for the plurality of groups of batteries.
Further, the battery liquid cooling system further comprises a bypass pipeline, and the bypass pipeline is connected to the inlet side of the water separator and the outlet side of the water collector.
Further, the compressor is an inverter compressor.
Compared with the prior art, the electrochemical energy storage thermal management system provided by the invention provides three working modes, different working modes are provided according to the ambient temperature, the energy storage battery can work in a required temperature range, and the purposes of energy conservation and environmental protection are achieved.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the electrochemical energy storage thermal management system of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the electrochemical energy storage and thermal management system of the present invention can be applied to a lithium battery energy storage and thermal management system, and includes: the system mainly comprises a refrigerating/heating system consisting of a compressor 1, an oil separator 2, a heat exchanger 3, a filter 4, a plate heat exchanger 5, a four-way reversing valve 6 and a throttle valve 18, a water-water heat exchange system consisting of a cooling water tower 15 and a water-heat exchange plate heat exchanger 17, and a battery liquid cooling system consisting of a water tank 9, a water separator 11, a liquid cooling plate 12, a water collector 13 and a bypass pipeline 14.
In a refrigerating/heating system composed of a compressor 1, an oil separator 2, a heat exchanger 3, a filter 4, a plate heat exchanger 5, a four-way reversing valve 6 and a throttle valve 18, the four-way reversing valve 6 is used for switching two working modes of refrigerating and heating. Wherein the heat exchanger 3 and the plate heat exchanger 5 are an evaporator and a condenser for each other in both operating modes.
The heat exchange side of the plate heat exchanger 5 is connected with the water tank 9 through a first pumping pipeline, and a first water pump 7 is arranged on the first pumping pipeline.
The water tank 9 is filled with secondary refrigerant and is provided with a temperature adjusting heater 8, and the heater 8 adjusts the temperature of the secondary refrigerant in a PID mode. The water tank 9 is connected with the water separator 11, the liquid cooling plate 12 and the water collector 13 through a second pumping pipeline, and a second water pump 10 is arranged on the second pumping pipeline. The water separator 11, the liquid cooling plate 12, and the water collector 13 have a bypass line 14.
One path of the cooling water tower 15 is connected with the heat exchanger 3 through a pumping pipeline III, and the other path of the cooling water tower 15 is connected with the water heat exchange plate heat exchanger 17 through a pumping pipeline IV. The third pumping pipeline and the fourth pumping pipeline share a third water pump 16.
The heat exchange side of the water heat exchange plate heat exchanger 17 is communicated with the water tank 9 through a pumping pipeline five, and the pumping pipeline five and the pumping pipeline one share the same water pump 7.
The thermal management system has three operating modes.
1. A cooling mode. When the ambient temperature is higher than the temperature required by the battery, the compressor 1 sends high-temperature and high-pressure gas into the condenser 3, the high-temperature and high-pressure gas is throttled by the throttle valve 18 and then enters the plate heat exchange gas 5 to provide cold energy for the secondary refrigerant, the secondary refrigerant is regulated to the required temperature by PID (proportion integration differentiation), and the secondary refrigerant is sent into the liquid cooling plate 12 by the water pump II 10 through the water separator 11 to cool the battery.
2. And (4) heating mode. When the ambient temperature is lower than the temperature required by the battery, the high-temperature and high-pressure gas discharged by the compressor 1 is throttled and depressurized after passing through the four-way reversing valve 6, the pressure is adjusted to the pressure corresponding to the required temperature, the gas enters the plate heat exchanger 5, the plate heat exchanger 5 is converted into a condenser at the moment, the discharged heat is used for warming the secondary refrigerant, and the warmed secondary refrigerant is sent into the water separator 11 through the water pump 2 to warm the battery.
3. And (4) surface cooling heat exchange. When the ambient temperature is close to the temperature required by the battery, the refrigeration system stops working, the cooling water of the cooling tower 15 is switched to the second path, and exchanges heat with the secondary refrigerant of the battery liquid cooling system in the water heat exchange plate heat exchanger 17 to take away heat, and the heat is exchanged with the environment through the fan of the cooling tower 15. Under this mode, only need water pump and cooling tower work, energy-conservation, environmental protection.
The electrochemical energy storage thermal management system provided by the invention provides three working modes, different working modes are provided according to the ambient temperature, the energy storage battery can work in a required temperature range, and the purposes of energy conservation and environmental protection are achieved.
The above description is only an example of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. An electrochemical energy storage thermal management system, comprising: the refrigeration/heating system mainly comprises a compressor, an oil separator, a four-way valve, a throttle valve, a heat exchanger and a plate heat exchanger, a water-water heat exchange system mainly comprises a cooling tower and a water-heat exchange plate heat exchanger, and a battery liquid cooling system mainly comprises a water tank and a liquid cooling plate, wherein the heat exchange side of the plate heat exchanger is connected with the water tank through a first pumping pipeline, a refrigerant and a temperature regulating heater are arranged in the water tank, the water tank is connected with the liquid cooling plate through a second pumping pipeline, the cooling tower is connected with the heat exchanger through a third pumping pipeline and is connected with the water-heat exchange plate heat exchanger through a fourth pumping pipeline, the water-heat exchange plate heat exchanger is connected with the water tank through a fifth pumping pipeline,
when the ambient temperature is higher than the temperature required by the battery, the plate heat exchanger serves as an evaporator to cool the secondary refrigerant, when the ambient temperature is lower than the temperature required by the battery, the plate heat exchanger serves as a condenser to heat the secondary refrigerant, and when the ambient temperature is close to the temperature required by the battery, only the water heat exchange plate heat exchanger participates in heat exchange.
2. The electrochemical energy storage and thermal management system of claim 1, wherein the first pumping pipeline and the fifth pumping pipeline share a water pump, and the third pumping pipeline and the fourth pumping pipeline share a water pump.
3. The electrochemical energy storage and thermal management system of claim 1, wherein the battery liquid cooling system further comprises a water separator and a water collector for distributing cooling lines to the plurality of groups of batteries.
4. The electrochemical energy storage thermal management system of claim 3, wherein the battery liquid cooling system further comprises a bypass line connected to an inlet side of the water separator and an outlet side of the water collector.
5. The electrochemical energy storage thermal management system of claim 1, wherein the compressor is an inverter compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211444255.8A CN115764058A (en) | 2022-11-18 | 2022-11-18 | Electrochemical energy storage thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211444255.8A CN115764058A (en) | 2022-11-18 | 2022-11-18 | Electrochemical energy storage thermal management system |
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| Publication Number | Publication Date |
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| CN115764058A true CN115764058A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211444255.8A Pending CN115764058A (en) | 2022-11-18 | 2022-11-18 | Electrochemical energy storage thermal management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352901A (en) * | 2023-10-17 | 2024-01-05 | 广州高澜节能技术股份有限公司 | Energy storage cabinet cooling system and cooling method |
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2022
- 2022-11-18 CN CN202211444255.8A patent/CN115764058A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352901A (en) * | 2023-10-17 | 2024-01-05 | 广州高澜节能技术股份有限公司 | Energy storage cabinet cooling system and cooling method |
| CN117352901B (en) * | 2023-10-17 | 2024-05-14 | 广州高澜节能技术股份有限公司 | Energy storage cabinet cooling system and cooling method |
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