CN217903229U - Liquid cooling heat dissipation system group structure of energy storage battery pack - Google Patents
Liquid cooling heat dissipation system group structure of energy storage battery pack Download PDFInfo
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- CN217903229U CN217903229U CN202221785518.7U CN202221785518U CN217903229U CN 217903229 U CN217903229 U CN 217903229U CN 202221785518 U CN202221785518 U CN 202221785518U CN 217903229 U CN217903229 U CN 217903229U
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- knockout drum
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- 238000001816 cooling Methods 0.000 title claims abstract description 106
- 239000007788 liquid Substances 0.000 title claims abstract description 102
- 238000004146 energy storage Methods 0.000 title claims abstract description 19
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000003507 refrigerant Substances 0.000 claims abstract description 34
- 238000000576 coating method Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 8
- 238000005097 cold rolling Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims 2
- 230000007797 corrosion Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000007306 turnover Effects 0.000 abstract 1
- 230000003245 working effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 26
- 230000035515 penetration Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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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- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to an energy storage battery pack liquid cooling heat dissipation system group structure, which comprises a plurality of liquid cooling plates, wherein an electric core is arranged between two adjacent liquid cooling plates; the liquid cooling plate is internally provided with a refrigerant channel, and the refrigerant channel forms refrigerant channel openings extending outwards at two ends of the lower part of the liquid cooling plate; the liquid cooling board both sides are equipped with the water knockout drum, the water knockout drum includes water knockout drum upper cover and water knockout drum bottom plate, cover on the water knockout drum and be equipped with the refrigerant interface that holds the refrigerant business turn over, its bottom and water knockout drum bottom plate sealing connection, be equipped with a plurality of liquid cooling board connectors on the water knockout drum bottom plate, in the refrigerant passageway opening on the liquid cooling board inserts the liquid cooling board connector on the water knockout drum bottom plate, and through welded sealing connection, the refrigerant gets into the liquid cooling board from the water knockout drum of one side, flow out behind the water knockout drum of refrigerant passageway entering opposite side, take away the heat that electric core produced, the utility model discloses the radiating effect is good, and the welded sealing reliability is high, can effectively reduce electric core operating temperature, guarantees group battery working property.
Description
Technical Field
The utility model relates to an energy storage battery group liquid cooling system block structure, concretely relates to new forms of energy storage battery's thermal management technical field.
Background
When a general energy storage battery pack charges or discharges an energy storage system, a large amount of heat can be generated, and due to the tight influence of the spatial arrangement of the batteries, the temperature in the energy storage battery pack can rise rapidly, even if the temperature of the battery pack and the total arrangement space in a container can be effectively reduced under the action of the existing heat dissipation device, the local heat in the container is difficult to be uniformly discharged, the operating environment of the batteries has great difference, the battery pack can cause serious difference of internal resistance and capacity among the batteries after long-term operation in the environment with large temperature difference, partial batteries can be overcharged or overdischarged, the performance and the service life of the energy storage system are influenced, and the potential safety hazard can be caused seriously. Therefore, the heat dissipation of the energy storage system is a key factor for determining the performance, safety and lifetime of the energy storage system.
The mainstream energy storage battery pack cooling mode comprises wind cooling and liquid cooling, the wind cooling is mainly realized by air supply elements such as a heat dissipation fan, the residual space inside the container type energy storage battery is limited, a fan with larger volume is difficult to arrange, and then a mode of supplying air by a porous air pipe can be selected as a substitute, but the position of the air pipe is relatively fixed, and when the air pipe is used for supplying air, the parameters such as the wind direction and the wind speed of cold air are difficult to adjust, so that the phenomenon of uneven air supply is easy to occur, and the wind cooling effect is seriously influenced; compare air-cooled refrigerated mode, liquid cooling form effect can be more obvious, but when the liquid cooling system acts alone, can mainly cool down fast high-efficiently to container lateral part or group battery bottom, the inside heat of container, group battery still is difficult to timely distribute away, and whole cooling effect is unsatisfactory.
Therefore, a more efficient and reasonable thermal management scheme for energy storage battery design is needed to provide technical references for the development and market competition of container type energy storage systems.
Disclosure of Invention
To the problem, the utility model provides an energy storage battery group liquid cooling system integrated configuration lets in refrigerant circulation flow heat dissipation at every electric core both sides installation liquid cooling board, makes electric core cool down rapidly, keeps good operational environment, improves battery performance, increase of service life.
In order to realize the above function, the utility model adopts the following technical scheme: a liquid cooling heat dissipation system group structure of an energy storage battery pack is characterized by comprising a plurality of liquid cooling plates which are arranged in parallel at intervals, wherein a battery cell is arranged between every two adjacent liquid cooling plates; the liquid cooling plate is formed by hot rolling or cold rolling a plurality of metal plates into a whole, a cold medium channel and a heat superconducting pipeline which are formed by blowing are arranged among the metal plates, the two ends of the lower part of the liquid cooling plate are provided with connecting end parts which extend outwards, and the cold medium channel forms a cold medium channel opening communicated with the outside at the connecting end parts; the water separator is arranged on two sides of the liquid cooling plate and comprises a water separator upper cover and a water separator bottom plate, the water separator upper cover is of a long groove structure, a refrigerant interface for a refrigerant to enter and exit is arranged on one small end face, the bottom of the water separator upper cover is welded and fixed with the water separator bottom plate, a plurality of liquid cooling plate connecting ports are arranged on the water separator bottom plate, and the central lines of the liquid cooling plate connecting ports are perpendicular to the long edges of the water separator bottom plate; two ends of the liquid cooling plate are respectively inserted into the liquid cooling plate connecting ports on the water distributor base plates on two sides, the tail ends of the liquid cooling plate are parallel and level with the water distributor base plates, and the ends of the liquid cooling plate are fixedly welded with the water distributor base plates.
Furthermore, the thickness of the bottom plate of the water distributor is 3-7 mm, the two ends of a liquid cooling plate connecting port on the bottom plate are square, the middle part of the liquid cooling plate connecting port is arc-shaped, the width of the opening in the middle part is larger than that of the two ends, and the width change positions of the liquid cooling plate connecting port are connected smoothly.
Furthermore, the connecting end part of the liquid cooling plate is provided with a transition fillet.
Furthermore, the large side surface of the battery cell is connected with the liquid cooling plate.
Furthermore, the liquid cooling plate is a composite plate formed by integrating two aluminum alloy plates through hot rolling or cold rolling.
Furthermore, the welding interfaces of the connecting end part and the water distributor bottom plate, and the water distributor bottom plate and the water distributor upper cover are respectively provided with an anticorrosive coating.
Further, the anticorrosive coating is an antioxidant coating.
To sum up, the utility model discloses novel structure can effectually derive the heat that energy storage battery group charge-discharge in-process produced, its simple structure installs the liquid cooling board between adjacent electric core to let in the refrigerant and can realize, more traditional air-cooled heat dissipation and water-cooling heat abstractor, the utility model has the characteristics of the radiating efficiency is high, the temperature uniformity is better, and compact structure, and little to the volume influence of group battery, need not carry on too big water tank, has higher spreading value.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention, (only the grouping structure of the liquid cooling plate and the water separator is shown in the figure).
Fig. 2 is a schematic structural diagram of an embodiment of the present invention (the water separator upper cover is not shown in the figure).
Fig. 3 is an enlarged view of fig. 2 at a.
Fig. 4 is a schematic structural diagram of an embodiment of the present invention (a side water separator is not shown in the figure).
Description of reference numerals:
1-liquid cooling plate, 11-refrigerant channel, 12-connecting end, 13-refrigerant channel opening, 2-water separator, 21-water separator upper cover, 22-water separator bottom plate, 23-liquid cooling plate connecting port and 24-refrigerant interface.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will make a further detailed description of the technical solutions of the embodiments of the present invention with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The battery pack liquid cooling heat dissipation system group structure shown in fig. 1 to 4 is characterized by comprising a plurality of liquid cooling plates 1 arranged in parallel at intervals, wherein a battery cell is arranged between every two adjacent liquid cooling plates 1; the liquid cooling plate 1 is formed by hot rolling or cold rolling a plurality of metal plates into a whole, a cold medium channel 11 and a heat superconducting pipeline which are formed by blowing are arranged among the plurality of metal plates, two ends of the lower part of the liquid cooling plate 1 are provided with connecting end parts 12 which extend outwards, and a cold medium channel opening 13 communicated with the outside is formed at the connecting end part 12 of the cold medium channel 11; the water separator 2 is arranged on two sides of the liquid cooling plate 1, the water separator 2 comprises a water separator upper cover 21 and a water separator bottom plate 22, the water separator upper cover 21 is of a long groove structure, a refrigerant interface 24 for refrigerant to enter and exit is arranged on one small end face, the bottom of the water separator upper cover is welded and fixed with the water separator bottom plate 22, a plurality of liquid cooling plate connecting ports 23 are arranged on the water separator bottom plate 22, and the central line of each liquid cooling plate connecting port 23 is perpendicular to the long edge of the water separator bottom plate 22; two connecting end parts 12 of the liquid cooling plate 1 are respectively inserted into the liquid cooling plate connecting ports 12 on the water distributor bottom plates 22 at two sides, the tail ends of the liquid cooling plate 1 are flush with the water distributor bottom plates 22, and the connecting end parts 12 of the liquid cooling plate 1 are fixedly welded with the water distributor bottom plates 22.
Further, the thickness of the water separator bottom plate 22 is 3-7 mm, the two ends of the liquid cooling plate connector 12 on the water separator bottom plate are square, the middle part is arc-shaped, the width of the opening in the middle part is larger than that of the two ends, and the width change positions of the middle part are smoothly connected.
Furthermore, the connecting end 12 of the liquid cooling plate 1 is provided with a transition fillet.
Further, the large side face of the battery cell is connected with the liquid cooling plate 1.
Further, the liquid cooling plate 1 is a composite plate formed by integrating two aluminum alloy plates through hot rolling or cold rolling.
Further, anti-oxidant anticorrosive coatings are arranged at the welding interfaces of the connecting end portion 12 and the water separator base plate 22, and the water separator base plate 22 and the water separator upper cover 21.
The present embodiment may be grouped using the following welding method, including the steps of:
s1, arranging a plurality of liquid cooling plates 1 and a plurality of battery cells at intervals, and fixing the liquid cooling plates and the battery cells through an inner frame to enable two large side surfaces of each battery cell to be in contact with the liquid cooling plates 1; the liquid cooling plate 1 is a composite plate formed by two aluminum plates through hot rolling, a refrigerant channel 11 integrally formed with the aluminum plates is arranged in the liquid cooling plate, and a refrigerant channel opening 13 communicated with the outside is formed at the connecting end portion 12 of the refrigerant channel 11.
S2, installing a water distributor base plate 22, aligning the connecting end parts 12 at two ends of the lower part of the liquid cooling plate 1 with the liquid cooling plate connecting ports 23 on the water distributor base plate 22 one by using a jig, and inserting the connecting end parts 12 into the liquid cooling plate connecting ports 23; the jig is of a comb-shaped structure, and a groove for positioning the connecting end part 12 is arranged on the jig; and positioning the plurality of connecting end parts 12 in the groove, installing the water distributor bottom plate 22, removing the comb-shaped jig after all the connecting end parts 12 are inserted into the liquid cooling plate connecting port 23, and installing the water distributor bottom plate 22 in place.
S3, cutting the parts of the connecting end parts 12 of the plurality of liquid cooling plates 1, which extend out of the water separator bottom plate 22, flat to enable the ports of the parts to be flush with the outer surface of the water separator bottom plate 22; in this step, the protruding portion of the connecting end portion 12 is cut flat by using hydraulic cutting pliers or manual cutting pliers.
And S4, expanding the closed refrigerant channel 11 at the connecting end part 12 after the cutting to ensure that the refrigerant channel is jointed with the liquid cooling plate connecting port 23.
S5, welding and fixing the liquid cooling plate 1 and the water distributor bottom plate 22 along the joint of the liquid cooling plate connecting port 23 and the expanded refrigerant channel 11, and sealing a welding seam; in the welding process, a 2000W semiconductor laser and a 2000W continuous fiber laser are compositely welded, the adopted welding head is a quasi-straight focusing welding head, the welding speed is 100mm/s, the welding penetration is 1mm, and the welding penetration is 1.3mm.
S6, set up anticorrosive coating in welding seam department, under the liquid cooling system is in the state of liquid infiltration for a long time, avoid welding seam department to be corroded, need set up anticorrosive coating in welding seam department, in this embodiment, choose for use, further improve also cold life and the reliability of system.
S7, installing a water distributor upper cover 21, welding and fixing the water distributor upper cover 21 and the water distributor bottom plate 22 to be in sealing connection, similarly adopting a mode of composite welding of a 2000W semiconductor laser and a 2000W continuous optical fiber laser, wherein the adopted welding head is a quasi-straight focusing welding head, the welding speed is 100mm/S, the welding penetration is 2mm, and the welding penetration is 1.5mm.
The liquid cooling plate 1 used in this embodiment is a phase change suppression heat transfer plate, and is formed by hot rolling two aluminum alloy plates with the thickness of 0.8mm into a whole, and the refrigerant channel 11 on the liquid cooling plate is manufactured by a blowing process, and the single surface of the liquid cooling plate protrudes by 0.5mm. Therefore, the thickness of the thickest part of the whole liquid cooling plate 1 is 2.6mm, namely 0.8 multiplied by 2+0.5 multiplied by 2mm, and the liquid cooling plate 1 is clamped between the two battery cores, so that the heat dissipation efficiency of the battery cores can be greatly improved, and the influence on the volume of the whole battery pack is very small. The liquid cooling plate 1 guides heat emitted by the battery cell into a refrigerant, and the refrigerant in the refrigerant channel 11 flows to emit the heat out, so that the suitable working temperature of the battery cell is ensured.
In the actual assembly process, the liquid cooling plate 1 and the battery cell are sequentially arranged and fixedly connected through the inner frame or other elements of the battery pack, and then the water separator 2 on the two sides is installed, which can be easily concluded by a person skilled in the art, so the inner frame and other fixed and connected elements of the battery pack are drawn in this embodiment, and the drawings in the specification only show the connection mode of the liquid cooling plate 1 and the water separator 2.
During welding, weld penetration is detected in real time, because a battery pack is positioned on an assembly line during welding, only one inner support is separated between a water distributor bottom plate and an electric core, the thickness of the water distributor bottom plate is limited, if the weld penetration is too large, welding sealing failure can be caused, the safety of the electric core can be seriously affected, the weld penetration is too small, welding connection is unreliable, the sealing effect cannot be guaranteed, and therefore the control of the weld penetration is particularly important and needs real-time detection so as to be adjusted at any time.
When the liquid cooling system is used, the liquid cooling plate 1 and the battery cell are fixed and positioned through fixing elements such as the inner frame, the structural strength is guaranteed, a refrigerant flows into the water distributor 2 through the refrigerant interface 24 on the water distributor 2, flows into each liquid cooling plate 1 from the liquid cooling plate connector 23 which is hermetically connected with the liquid cooling plate 1 on the water distributor 2, flows through the refrigerant channel 11, takes away heat generated by the battery cell, flows into the water distributor 2 on the other side, flows out from the refrigerant interface 24, and enters the circulation of the liquid cooling system again after being cooled externally. The utility model discloses can effectively discharge the heat that the group battery produced at the charge-discharge in-process, guarantee that the battery works under suitable temperature environment, guarantee the performance of group battery. And welding is simple and efficient in groups, and after the connecting end part 12 of the liquid cooling plate 1 is cut flat and reamed, the flow resistance of a refrigerant in the water separator 2 and the liquid cooling plate 1 can be further reduced, and the heat dissipation efficiency is improved.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.
Claims (7)
1. A liquid cooling heat dissipation system group structure of an energy storage battery pack is characterized by comprising a plurality of liquid cooling plates which are arranged in parallel at intervals, wherein a battery cell is arranged between every two adjacent liquid cooling plates; the liquid cooling plate is formed by hot rolling or cold rolling a plurality of metal plates into a whole, a cold medium channel and a heat superconducting pipeline which are formed by blowing are arranged among the metal plates, the two ends of the lower part of the liquid cooling plate are provided with connecting end parts which extend outwards, and the cold medium channel forms a cold medium channel port communicated with the outside at the connecting end part; the water separator is arranged on two sides of the liquid cooling plate and comprises a water separator upper cover and a water separator bottom plate, the water separator upper cover is of a long groove structure, a refrigerant interface for a refrigerant to enter and exit is arranged on one small end face, the bottom of the water separator upper cover is welded and fixed with the water separator bottom plate, a plurality of liquid cooling plate connecting ports are arranged on the water separator bottom plate, and the central lines of the liquid cooling plate connecting ports are perpendicular to the long edges of the water separator bottom plate; two ends of the liquid cooling plate are respectively inserted into the liquid cooling plate connecting ports on the water distributor base plates on two sides, the tail end of the liquid cooling plate is flush with the water distributor base plates, and the ends of the liquid cooling plate are fixedly welded with the water distributor base plates.
2. The battery pack liquid-cooled heat dissipation system set structure of claim 1, wherein the thickness of the water distributor bottom plate is 3-7 mm, the two ends of the liquid-cooled plate connector on the water distributor bottom plate are square, the middle part of the liquid-cooled plate connector is arc-shaped, the width of the opening in the middle part is larger than that of the two ends, and the width change parts of the liquid-cooled plate connector are smoothly connected.
3. The battery pack liquid-cooled heat dissipation system cluster structure of claim 1, wherein the connection ends of the liquid-cooled plates are provided with transition fillets.
4. The battery pack liquid-cooled heat dissipation system set structure of claim 1, wherein the large side of the battery cell is connected to the liquid-cooled plate.
5. The battery pack liquid cooling heat dissipation system set structure of claim 1, wherein the liquid cooling plate is a composite plate formed by hot rolling or cold rolling two aluminum alloy plates.
6. The battery pack liquid-cooled heat dissipation system set structure of claim 1, wherein the connection end and the welded interfaces of the water distributor base plate, the water distributor base plate and the water distributor upper cover are provided with an anti-corrosion coating.
7. The battery pack liquid cooled heat removal system package assembly of claim 6, wherein the corrosion resistant coating is an antioxidant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221785518.7U CN217903229U (en) | 2022-07-12 | 2022-07-12 | Liquid cooling heat dissipation system group structure of energy storage battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221785518.7U CN217903229U (en) | 2022-07-12 | 2022-07-12 | Liquid cooling heat dissipation system group structure of energy storage battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN217903229U true CN217903229U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221785518.7U Active CN217903229U (en) | 2022-07-12 | 2022-07-12 | Liquid cooling heat dissipation system group structure of energy storage battery pack |
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| Country | Link |
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| CN (1) | CN217903229U (en) |
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2022
- 2022-07-12 CN CN202221785518.7U patent/CN217903229U/en active Active
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Address after: 400000 No. 107, datagu Middle Road, Xiantao street, Yubei District, Chongqing Patentee after: Chongqing Gengchen Energy Technology Co.,Ltd. Country or region after: China Address before: 400000 No. 107, datagu Middle Road, Xiantao street, Yubei District, Chongqing Patentee before: Chongqing Three Gorges Times Energy Technology Co.,Ltd. Country or region before: China |