CN220604761U - Energy storage device - Google Patents
Energy storage device Download PDFInfo
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- CN220604761U CN220604761U CN202322283703.7U CN202322283703U CN220604761U CN 220604761 U CN220604761 U CN 220604761U CN 202322283703 U CN202322283703 U CN 202322283703U CN 220604761 U CN220604761 U CN 220604761U
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- cooling
- liquid
- battery
- battery pack
- temperature
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- 238000004146 energy storage Methods 0.000 title claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 164
- 238000001816 cooling Methods 0.000 claims abstract description 119
- 239000000110 cooling liquid Substances 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000002826 coolant Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
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Abstract
The application provides energy storage equipment, which comprises a temperature measuring device, a cooling system, a control device and a plurality of battery packs, wherein the temperature measuring device is used for measuring the current temperature of each battery pack; the cooling system comprises a liquid cooling unit, cooling pipelines and flow control valves, the cooling pipelines are connected with each battery pack in one-to-one correspondence, the liquid cooling unit is connected with the cooling pipelines and used for conveying cooling liquid to cooling structures in each battery pack through the cooling pipelines, and the flow control valves are arranged in the cooling pipelines and are in one-to-one correspondence with each battery pack. The temperature measuring device can detect the temperature of each battery pack in a one-to-one correspondence manner, the cooling pipeline is connected with each battery pack, and the cooling pipeline is provided with a flow control valve in one-to-one correspondence with each battery pack. The control device can control the opening of each corresponding flow control valve according to the temperature of each battery pack, so that the temperature control precision of the energy storage equipment can be improved, the temperature uniformity in the energy storage equipment is improved, and the battery packs are closer to an optimal working interval.
Description
Technical Field
The application relates to the technical field of energy storage, in particular to energy storage equipment.
Background
In order to improve the energy storage capacity, the energy storage device is generally provided with a plurality of rows of battery modules, and each row of battery modules is provided with a plurality of layers of batteries for storing energy. When the multi-row and multi-layer battery modules work, heat generated by each battery module needs to be dissipated in time, so that equipment damage and failure are prevented. Therefore, the heat dissipation cooling system is arranged in the energy storage device.
The manner in which the energy storage device is cooled is related to its safety, cost and efficiency aspects. The main cooling modes of the energy storage equipment comprise natural cooling, forced air cooling and liquid cooling, and the three modes are respectively applied to different occasions. In large-scale container energy storage applications, liquid-cooled energy storage devices are of great interest.
The production of the battery monomer and the battery pack adopts an industrial flow line type production mode. Due to the conditions of non-uniformity of materials, burrs of pole pieces, assembly errors and the like, the battery generates heat in the charge and discharge stages, but the heat generation efficiency of each single battery is necessarily different, so that the heat distribution and the average temperature of a battery pack formed by a plurality of single batteries are also different. The average temperature of the battery pack with high yield must be lower than that of the battery pack with low yield during the charge or discharge phase of the same power. However, the existing energy storage device cannot accurately control the internal temperature, so that the uniformity of the internal temperature is affected, and meanwhile, the battery pack cannot be located in an optimal working range, so that the energy utilization efficiency is affected.
Therefore, how to improve the temperature control accuracy of the energy storage device is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The application aims at least solving one of the technical problems in the prior art, and provides energy storage equipment which can control the temperature of each battery pack and improve the temperature control precision of the energy storage equipment.
In order to achieve the purpose of the application, the energy storage device comprises a temperature measuring device, a cooling system, a control device and a plurality of battery packs, wherein,
the temperature measuring device is used for measuring the current temperature of each battery pack;
the cooling system comprises a liquid cooling unit, cooling pipelines and flow control valves, wherein the cooling pipelines are connected with each battery pack in one-to-one correspondence, the liquid cooling unit is connected with the cooling pipelines and used for conveying cooling liquid to cooling structures in each battery pack through the cooling pipelines, the flow control valves are arranged in the cooling pipelines and are in one-to-one correspondence with each battery pack, and the control device is used for controlling the opening of the flow control valves according to the temperature of the battery packs.
In some embodiments, a plurality of the battery packs are stacked to form a battery cluster, and the energy storage device includes at least two of the battery clusters.
In some embodiments, the cooling pipeline comprises a liquid inlet main pipe, a primary liquid inlet branch pipe and a secondary liquid inlet branch pipe, the primary liquid inlet branch pipes are in one-to-one correspondence with the battery clusters, and each primary liquid inlet branch pipe is connected with the liquid inlet main pipe;
the secondary liquid inlet branch pipe is connected with the primary liquid inlet branch pipe and the liquid inlet of each battery pack in the corresponding battery cluster.
In some embodiments, the cooling pipeline comprises a liquid return main pipe, a primary liquid return branch pipe and a secondary liquid return branch pipe, the primary liquid return branch pipes are in one-to-one correspondence with the battery clusters, and each primary liquid return branch pipe is connected with the liquid return main pipe;
the secondary liquid return branch pipe is connected with the primary liquid return branch pipe and the liquid return port of each battery pack in the corresponding battery cluster.
In some embodiments, the flow control valve comprises a liquid inlet valve connected with the liquid inlet and a liquid return valve connected with the liquid return port, and the liquid inlet valve and the liquid return valve are both electromagnetic valves made of corrosion-resistant materials.
In some embodiments, the liquid cooling unit comprises a cooling liquid tank, a cooling mechanism and a conveying mechanism, wherein the conveying mechanism is connected with the cooling liquid tank and the liquid inlet main pipe and is used for conveying cooling liquid to the battery pack through the liquid inlet main pipe; the cooling liquid tank is connected with the liquid return header pipe and is used for containing the returned cooling liquid;
the cooling mechanism is connected with the cooling liquid tank and is used for cooling liquid in the cooling liquid tank.
In some embodiments, the battery pack comprises a battery and a cooling structure, wherein the cooling structure is a cooling plate, the cooling plate is arranged below the battery and is attached to the battery, a cooling cavity is formed in the cooling plate, and a cooling pipeline is communicated with the cooling cavity.
In some embodiments, the number of the batteries in the battery pack is a plurality, and each battery is attached to the cooling plate in the battery pack where the battery pack is located.
In some embodiments, the temperature measuring device includes a plurality of temperature sensors, each for measuring a temperature of each of the batteries.
In some embodiments, the control device further includes an executing portion, where the executing portion is electrically connected to each flow control valve, and is configured to control an opening degree of the flow control valve corresponding to the battery according to a highest temperature of the battery and an average temperature in a battery pack where the battery is located.
The application has the following beneficial effects:
the energy storage device comprises a temperature measuring device, a cooling system, a control device and a plurality of battery packs, wherein the temperature measuring device is used for measuring the current temperature of each battery pack; the cooling system comprises a liquid cooling unit, cooling pipelines and flow control valves, the cooling pipelines are connected with each battery pack in one-to-one correspondence, the liquid cooling unit is connected with the cooling pipelines and used for conveying cooling liquid to cooling structures in each battery pack through the cooling pipelines, and the flow control valves are arranged in the cooling pipelines and are in one-to-one correspondence with each battery pack.
The temperature measuring device can detect the temperature of each battery pack in a one-to-one correspondence manner, the cooling pipeline is connected with each battery pack, and the cooling pipeline is provided with a flow control valve in one-to-one correspondence with each battery pack. The control device can control the opening of each corresponding flow control valve according to the temperature of each battery pack, so that the temperature control precision of the energy storage equipment can be improved, the temperature uniformity in the energy storage equipment is improved, and the battery packs are closer to an optimal working interval.
Drawings
Fig. 1 is a schematic structural diagram of an energy storage device provided in the present application.
Wherein, the reference numerals in fig. 1 are:
the liquid cooling unit 1, the battery pack 2, the control device 3, the liquid inlet pipeline 4, the liquid return pipeline 5, the liquid inlet valve 6 and the liquid return valve 7.
Detailed Description
In order to better understand the technical solutions of the present application, the following describes in detail the energy storage device provided in the present application with reference to the accompanying drawings.
The energy storage device comprises a temperature measuring device, a cooling system, a control device 3 and a plurality of battery packs 2. The cooling system includes a liquid cooling unit 1, a cooling pipeline and a flow control valve, wherein the cooling pipeline may include a liquid inlet pipeline 4 and a liquid return pipeline 5, and the liquid inlet pipeline 4 and the liquid return pipeline 5 are uniformly and correspondingly connected to each battery pack 2. The output port and the reflux port of the liquid cooling unit 1 are respectively connected with a liquid inlet pipeline 4 and a liquid return pipeline 5, and the liquid cooling unit 1 conveys cooling liquid to each battery pack 2 through the liquid inlet pipeline 4. After exchanging heat with the batteries in the battery pack 2, the cooling liquid flows back into the liquid cooling unit 1 through the liquid return pipeline 5. The liquid cooling unit 1 cools the returned cooling liquid, and then conveys the cooled cooling liquid to the battery pack 2 for heat exchange with the batteries in the battery pack 2.
Flow control valves can be arranged in the liquid inlet pipeline 4 and/or the liquid return pipeline 5, the flow control valves are in one-to-one correspondence with the battery packs 2, and the opening of each flow control valve can adjust the flow of cooling liquid entering the battery packs 2, so that the temperature of the battery packs 2 is controlled. The temperature measuring device is used to measure the current temperature of each battery pack 2. The flow control valve device and the temperature measuring device are electrically connected with the control device 3, and the control device 3 is used for controlling the opening degree of the flow control valve according to the temperature of the battery pack 2.
In this embodiment, the cooling pipeline of the energy storage device is connected to each battery pack 2, and flow control valves corresponding to the battery packs 2 one by one are disposed in the cooling pipeline. The temperature measuring device is used for measuring the temperature of each battery pack 2, the control device 3 controls the opening of the corresponding flow control valve according to the temperature of each battery pack 2, and further controls the temperature of each battery pack 2, so that the control precision of the internal temperature of the energy storage device is improved, the temperature of each battery pack 2 is close to the optimal working range, and the energy utilization efficiency is improved.
In some embodiments, a plurality of battery packs 2 may be stacked to form a battery cluster, and the energy storage device includes at least two battery clusters. In one embodiment of the present application, the energy storage device includes three battery clusters, which may be disposed side-by-side. Of course, the number of battery clusters in the energy storage device may be set according to the needs of the user, which is not limited herein.
Optionally, the liquid inlet pipeline 4 comprises a liquid inlet main pipe, a primary liquid inlet branch pipe and a secondary liquid inlet branch pipe. Wherein, the liquid inlet main pipe is connected with the output port of the liquid cooling unit 1. The first-stage liquid inlet branch pipes are arranged in one-to-one correspondence with the battery clusters, and each first-stage liquid inlet branch pipe is connected with the liquid inlet main pipe. The secondary liquid inlet branch pipe connects the primary liquid inlet branch pipe with the liquid inlet of each battery pack 2 in the corresponding battery cluster. The cooling liquid output by the liquid cooling unit 1 is sequentially conveyed to each battery pack 2 along a liquid inlet main pipe, a primary liquid inlet branch pipe and a secondary liquid inlet branch pipe.
Optionally, an insulation layer may be further disposed on the outer periphery of the liquid inlet pipeline 4. Because the temperature of the cooling liquid is generally lower than the ambient temperature in the energy storage device, the heat insulation layer can reduce heat exchange between the cooling liquid and the air in the energy storage device in the process of conveying the cooling liquid to the battery pack 2, so that the cooling liquid can still keep a lower temperature when entering the battery pack 2, and the heat dissipation efficiency of the cooling system is improved.
Optionally, the liquid return line 5 includes a liquid return main pipe, a primary liquid return branch pipe and a secondary liquid return branch pipe. Wherein, the liquid return main pipe is connected with a return port of the liquid cooling unit 1. The first-stage liquid return branch pipes are arranged in one-to-one correspondence with the battery clusters, and each first-stage liquid return branch pipe is connected with the liquid return main pipe. The secondary liquid return branch pipe connects the primary liquid return branch pipe with the liquid return port of each battery pack 2 in the corresponding battery cluster. And the cooling liquid returned by the battery cluster is conveyed to the liquid cooling unit 1 through the secondary liquid return branch pipe, the primary liquid return branch pipe and the liquid return main pipe in sequence. In this embodiment, the cooling liquid flows back to the liquid cooling unit 1 through the backflow pipeline after exchanging heat with one battery pack 2, so that heat accumulation of a plurality of battery packs 2 cannot be generated in the heat exchange process, a large temperature difference between the cooling liquid and the battery packs 2 can be ensured, heat exchange efficiency is improved, and the battery packs 2 can be controlled at a low temperature. Of course, the distribution manner of the liquid inlet line 4 and the liquid return line 5 may be set according to the needs of the user, which is not limited herein.
Optionally, the flow control valve comprises a feed valve 6 and a return valve 7. The liquid inlet valves 6 are connected with the input ports of the battery packs 2 in a one-to-one correspondence manner, the liquid inlet valves 6 are connected with the two-stage liquid inlet branch pipes in a one-to-one correspondence manner, and the flow of the cooling liquid entering the battery packs 2 can be controlled by adjusting the opening of the liquid inlet valves 6. The liquid return valves 7 are connected with the reflux ports of the battery pack 2 in a one-to-one correspondence manner, the liquid return valves 7 are connected with the two-stage liquid return branch pipes in a one-to-one correspondence manner, and the flow rate of the cooling liquid flowing out of the battery pack 2 can be controlled by adjusting the opening of the liquid return valves 7. The inlet valve 6 and the return valve 7 can adopt electromagnetic valves of the same type, and are made of corrosion-resistant materials, and the corrosion-resistant materials can reduce the corrosion of the cooling liquid to the flow control valve, so that the service life of the valve is prolonged.
In the embodiment of the application, the coolant is cooling water, and in the embodiment, the feed liquor valve 6 and the return liquor valve 7 are made of brass, so that the brass can bear the corrosion of the cooling water, and the reliability of the valve is ensured. Of course, the cooling liquid may be other liquids, and the liquid inlet valve 6 and the liquid return valve 7 may be made of other materials such as stainless steel, which is not limited herein.
In some embodiments, the battery pack 2 includes a battery and a cooling structure, which is a cooling plate. The cooling plate is arranged below the battery and is attached to the battery. The cooling plate is provided with a cooling cavity, a liquid inlet and a liquid return opening, and the liquid inlet pipeline 4 and the liquid return pipeline 5 are respectively connected with the liquid inlet and the liquid return opening. The cooling liquid enters the cooling cavity from the liquid inlet to reduce the temperature of the cooling plate, and the cooling plate exchanges heat with the battery to cool the battery. The cooling liquid after heat exchange flows out from the liquid return port and then flows back to the liquid cooling unit 1 along the liquid return pipeline 5. The cooling plate can increase the contact area with the battery, thereby improving the heat exchange efficiency and the temperature control precision of the energy storage equipment. Of course, the cooling structure may take other shapes, and is not limited herein.
Optionally, the number of the batteries in the battery pack 2 is multiple, and each battery is attached to the cooling plate in the battery pack 2 where it is located. Further, the temperature measuring device comprises a plurality of temperature sensors, and each temperature sensor is used for measuring the temperature of each battery. The temperature measuring device transmits the temperature of each battery to the control device 3, and the control device 3 determines the temperature of the corresponding battery pack 2 according to the temperature of each battery, so as to control the opening degree of the flow control valve.
Optionally, the control device 3 further includes an executing portion, and the executing portion is electrically connected to each flow control valve. The temperature device transmits the temperature of each battery in the battery pack 2 to the control unit, and the control unit 3 may calculate the average temperature of each battery in the battery pack 2 and use the average temperature as the temperature of the battery pack 2. The control device 3 may also control the opening of the flow control valve corresponding to the battery according to the highest temperature of the battery in the battery pack 2 and the average temperature in the battery pack 2 where the battery is located. Specifically, if the difference between the highest temperature and the average temperature is greater than a threshold value, the opening degree of the flow control valve is preferentially adjusted according to the highest temperature; if the difference between the highest temperature and the average temperature is smaller than the threshold value, the opening degree of the flow control valve is preferentially adjusted according to the average temperature. The control device 3 may be a battery management system of the energy storage device, and the execution part may be specifically a unit battery management unit in the battery management system. The battery management system and the unit cell management unit may refer to the prior art, and are not described herein.
Alternatively, the control device 3 may control the opening degrees of the liquid inlet valve 6 and the liquid return valve 7 according to the temperature of the battery pack 2. The control device 3 may preset a correspondence relationship between the opening of the flow control valve and the highest temperature of the unit battery and the average temperature of the battery pack 2, and the control device 3 may control the opening of the flow control valve according to the highest temperature of the unit battery and the average temperature of the battery pack 2 measured by the temperature measuring device. The calculated amount of the control process is small, so that the rapid correspondence of temperature adjustment can be realized. Further, the control device 3 may set the highest temperature of the unit battery and the average temperature of the battery pack 2 to a plurality of temperature intervals, and each temperature interval corresponds to the opening of one flow control valve. When the related parameters are located in a certain temperature interval, the flow control valve is adjusted to the corresponding opening degree, and the response speed of the control process is further improved.
Optionally, the cooling system comprises a liquid inlet valve 6 and a liquid return valve 7 for controlling the liquid inlet flow and the liquid return flow of the cooling liquid, respectively. The cooling system is also provided with an output temperature sensor for detecting the output temperature of the cooling liquid and a return temperature sensor for detecting the return temperature of the cooling liquid. The output temperature sensor and the reflux temperature sensor can be respectively arranged on the liquid inlet main pipe and the liquid return main pipe. The output temperature sensor and the return temperature sensor are electrically connected to the control device 3, and transmit the output temperature and the return temperature of the coolant to the control device 3. If the output temperature and the return temperature of the cooling liquid differ less, this means that the burden on the cooling system is less. At this time, if the control device 3 needs to reduce the flow rate of the coolant, the opening degree of the liquid return valve 7 is preferentially reduced; if the flow rate of the cooling liquid needs to be increased, the flow rate of the liquid inlet valve 6 is preferentially increased, so that the residence time of the cooling liquid in the battery pack 2 is prolonged, and the cooling capacity of the cooling liquid is fully utilized. Otherwise, when the control device 3 needs to reduce the flow of the cooling liquid, the opening of the liquid return valve 7 is preferentially reduced; when the flow rate of the cooling liquid needs to be increased, the flow rate of the liquid inlet valve 6 is preferentially increased, so that the residence time of the cooling liquid in the battery pack 2 is reduced, and the circulation speed of the cooling liquid is increased. In this embodiment, the liquid inlet valve 6 and the liquid return valve 7 are provided in the cooling system, and the user may set one of the liquid inlet valve 6 and the liquid return valve 7 as required, which is not limited herein.
In some embodiments, the liquid cooling unit 1 includes a cooling liquid tank, a cooling mechanism, and a conveying mechanism. The conveying mechanism may be specifically a conveying pump, an inlet of the conveying pump is connected with the cooling liquid tank, and an outlet of the conveying pump is connected with the liquid inlet main pipe and is used for pumping cooling liquid in the cooling liquid tank and conveying the cooling liquid to the battery pack 2 through the liquid inlet main pipe. The cooling liquid tank is connected with the liquid return header pipe, and the returned cooling liquid can flow into the cooling liquid tank. The cooling mechanism is connected with the cooling liquid tank and is used for cooling the cooling liquid in the cooling liquid tank. The cooling mechanism can radiate the cooling liquid through air cooling or coolant, and the specific structure can refer to an air cooler or an air conditioner in the prior art. Of course, the cooling mechanism can also be connected with the liquid return pipeline 5, the cooling liquid in the liquid return pipeline 5 is directly cooled, the cooled cooling liquid is stored in the cooling liquid tank, the storage capacity of the cooling liquid can be improved, heat absorption of the cooling liquid can be reduced, and the energy utilization efficiency is improved.
It is to be understood that the above embodiments are merely illustrative of the exemplary embodiments employed to illustrate the principles of the present application, however, the present application is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the application, and are also considered to be within the scope of the application.
Claims (10)
1. The energy storage device is characterized by comprising a temperature measuring device, a cooling system, a control device and a plurality of battery packs, wherein,
the temperature measuring device is used for measuring the current temperature of each battery pack;
the cooling system comprises a liquid cooling unit, cooling pipelines and flow control valves, wherein the cooling pipelines are connected with each battery pack in one-to-one correspondence, the liquid cooling unit is connected with the cooling pipelines and used for conveying cooling liquid to cooling structures in each battery pack through the cooling pipelines, the flow control valves are arranged in the cooling pipelines and are in one-to-one correspondence with each battery pack, and the control device is used for controlling the opening of the flow control valves according to the temperature of the battery packs.
2. The energy storage device of claim 1, wherein a plurality of said battery packs are stacked to form a battery cluster, said energy storage device comprising at least two of said battery clusters.
3. The energy storage device of claim 2, wherein the cooling pipeline comprises a liquid inlet manifold, primary liquid inlet branch pipes and secondary liquid inlet branch pipes, the primary liquid inlet branch pipes are in one-to-one correspondence with the battery clusters, and each primary liquid inlet branch pipe is connected with the liquid inlet manifold;
the secondary liquid inlet branch pipe is connected with the primary liquid inlet branch pipe and the liquid inlet of each battery pack in the corresponding battery cluster.
4. The energy storage device of claim 3, wherein the cooling line comprises a liquid return manifold, primary liquid return branch pipes and secondary liquid return branch pipes, the primary liquid return branch pipes are in one-to-one correspondence with the battery clusters, and each primary liquid return branch pipe is connected with the liquid return manifold;
the secondary liquid return branch pipe is connected with the primary liquid return branch pipe and the liquid return port of each battery pack in the corresponding battery cluster.
5. The energy storage device of claim 4, wherein the flow control valve comprises a liquid inlet valve connected with the liquid inlet and a liquid return valve connected with the liquid return port, and the liquid inlet valve and the liquid return valve are both electromagnetic valves made of corrosion-resistant materials.
6. The energy storage device of claim 4, wherein the liquid cooling unit comprises a cooling liquid tank, a cooling mechanism, and a delivery mechanism, the delivery mechanism being coupled to the cooling liquid tank and the liquid inlet manifold for delivering cooling liquid to the battery pack through the liquid inlet manifold; the cooling liquid tank is connected with the liquid return header pipe and is used for containing the returned cooling liquid;
the cooling mechanism is connected with the cooling liquid tank and is used for cooling liquid in the cooling liquid tank.
7. The energy storage device of any one of claims 1 to 6, wherein the battery pack comprises a battery and a cooling structure, the cooling structure is a cooling plate, the cooling plate is arranged below the battery and is attached to the battery, a cooling cavity is formed in the cooling plate, and a cooling pipeline is communicated with the cooling cavity.
8. The energy storage device of claim 7, wherein the number of cells in the battery pack is a plurality, each of the cells being in contact with the cooling plate in the battery pack in which it is located.
9. The energy storage device of claim 8, wherein said temperature measuring means comprises a plurality of temperature sensors, each for measuring the temperature of each of said cells.
10. The energy storage device of claim 9, wherein the control means further comprises an execution unit electrically connected to each of the flow control valves for controlling the opening of the flow control valve corresponding to the battery according to the highest temperature of the battery and the average temperature in the battery pack in which the battery is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322283703.7U CN220604761U (en) | 2023-08-23 | 2023-08-23 | Energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322283703.7U CN220604761U (en) | 2023-08-23 | 2023-08-23 | Energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220604761U true CN220604761U (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322283703.7U Active CN220604761U (en) | 2023-08-23 | 2023-08-23 | Energy storage device |
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| Country | Link |
|---|---|
| CN (1) | CN220604761U (en) |
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2023
- 2023-08-23 CN CN202322283703.7U patent/CN220604761U/en active Active
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