CN212874590U - Fixing device and battery package of liquid cooling pipeline - Google Patents
Fixing device and battery package of liquid cooling pipeline Download PDFInfo
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- CN212874590U CN212874590U CN202021861120.8U CN202021861120U CN212874590U CN 212874590 U CN212874590 U CN 212874590U CN 202021861120 U CN202021861120 U CN 202021861120U CN 212874590 U CN212874590 U CN 212874590U
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- guide pipe
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- 239000007788 liquid Substances 0.000 title claims abstract description 59
- 238000001816 cooling Methods 0.000 title claims abstract description 50
- 230000000712 assembly Effects 0.000 claims abstract description 10
- 238000000429 assembly Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 abstract description 18
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 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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Abstract
The utility model discloses a fixing device and battery package of liquid cooling pipeline belongs to battery cooling technical field. The fixing device of the liquid cooling pipeline comprises a collecting pipe, a flow guide pipe and a plurality of supporting assemblies, wherein the flow guide pipe is arranged at intervals with the collecting pipe and is communicated with the collecting pipe; one end of each supporting assembly is connected with the collecting pipe, the other end of each supporting assembly is connected with the flow guide pipe, and the plurality of supporting assemblies are used for supporting the flow guide pipe. The battery package includes above-mentioned liquid cooling plate assembly. The utility model discloses a fixing device and battery package of liquid cooling pipeline, honeycomb duct are connected on the pressure manifold through the support assembly, make the fixing device of liquid cooling pipeline form an independent whole, need not to rely on the tank wall to install, have improved the installation convenience; the wall and the reinforcing ribs are not required to be perforated, so that the structural strength and the sealing performance are improved, and the use safety of the battery module is prevented from being influenced by liquid leakage; the honeycomb duct interval is connected on the pressure manifold, has improved the thermal diffusivity of honeycomb duct and pressure manifold.
Description
Technical Field
The utility model relates to a battery cooling technology field especially relates to a fixing device and battery package of liquid cooling pipeline.
Background
The battery during operation can produce the heat, if can not in time dispel the heat or cool off, will influence the performance of battery, can explode even when serious, consequently can be provided with cooling system on the battery, adopts the higher liquid cooling mode of cooling efficiency usually. The liquid cooling mode mainly comprises a liquid cooling plate used for cooling and a pipeline used for communicating the liquid cooling plate with the outside so as to realize cold and heat exchange of cooling liquid. In the existing design, the fixing mode of the pipeline comprises the following modes, firstly, a hanging lug is welded on a box body of the battery pack and fixed through the hanging lug, so that the attractiveness of the box body is influenced, the welding efficiency is not high due to limited box body space, and the pipeline which is not close to the box wall cannot be fixed; secondly, the box body and the reinforcing ribs are punched and fixed, so that the strength of the box body and the sealing performance of the battery pack are influenced; thirdly, fix the pipeline on the battery module, when the pipeline weeping, the coolant liquid can flow into in the module, has the safety risk.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fixing device of liquid cooling pipeline has improved the dismouting convenience, has improved structural strength, leakproofness and safety in utilization.
To achieve the purpose, the utility model adopts the following technical proposal:
a fixing device of a liquid cooling pipe includes:
a header pipe;
the flow guide pipe is arranged at an interval with the collecting pipe and is communicated with the collecting pipe;
the one end of every supporting component all is connected with the pressure manifold, and the other end of every supporting component all is connected with the honeycomb duct, and a plurality of supporting components all are used for supporting the honeycomb duct.
Optionally, the support assembly includes a support and a fixing member, the fixing member is connected to the support, the fixing member is connected to the flow guide pipe, the support is connected to the flow collecting pipe, and the plurality of support assemblies are arranged at intervals.
Optionally, the bracket is shaped like a Chinese character ji, and includes a first connecting portion connected to the fixing member, two second connecting portions connected to the collecting pipe, and two third connecting portions respectively for connecting the first connecting portion and the two second connecting portions, and the two second connecting portions and the two third connecting portions are respectively symmetrically disposed at two sides of the first connecting portion.
Optionally, the first connecting portion is provided with a connecting hole, and the fixing device of the liquid cooling pipeline further comprises a fastener, wherein the fastener penetrates through the connecting hole to connect the fixing member to the first connecting portion.
Optionally, the fastener is an expansion bolt.
Optionally, the second connecting portion is welded to the header.
Optionally, the securing member is a cable tie or a pipe strap.
Optionally, the fixing device for the liquid cooling pipe further comprises a pipe assembly, the pipe assembly is communicated with the collecting pipe and the flow guide pipe, and the pipe assembly supports the flow guide pipe on the collecting pipe.
Optionally, the conduit assembly includes a branch conduit in communication with the manifold and a pipe joint in communication with the branch conduit and the flow conduit.
Another object of the utility model is to provide a battery pack has improved installation convenience, has improved structural strength, leakproofness and safety in utilization.
To achieve the purpose, the utility model adopts the following technical proposal:
a battery pack comprises the fixing device of the liquid cooling pipeline.
The utility model has the advantages that:
the utility model provides a fixing device of liquid cooling pipeline, honeycomb duct are connected on the pressure manifold through the support assembly, make the fixing device of liquid cooling pipeline form an independent whole, set up independently with the battery module, need not to install on the tank wall, can realize fixing to the pipeline of keeping away from the tank wall too, have improved the flexibility of dismouting, it is more convenient to install; the box wall and the reinforcing ribs are not required to be punched, so that the strength and the sealing property of the box body are improved; leakage can be prevented from flowing into the battery module, and the use safety of the battery module is improved; in addition, the flow guide pipe is connected to the collecting pipe through the supporting assembly, the structure is simple, the installation is convenient, the flow guide pipe is connected to the collecting pipe through the supporting assembly at intervals, the direct contact between the flow guide pipe and the collecting pipe is avoided, and the heat dissipation of the flow guide pipe and the heat dissipation of the collecting pipe are facilitated respectively.
The utility model provides a battery pack, through the fixing device who adopts foretell liquid cooling pipeline, the fixing device mutually independent installation of battery module and liquid cooling pipeline has improved the dismouting flexibility and the convenience of the fixing device of liquid cooling pipeline, has improved the installation convenience of battery pack, need not to carry out erection joint through welded connection spare or beat the mounting hole on the box wall, has improved structural strength and leakproofness, and in addition, the independent installation uses the security good, and the thermal diffusivity is better.
Drawings
Fig. 1 is a schematic structural view of a fixing device for a liquid cooling pipeline according to an embodiment of the present invention;
fig. 2 is a partial schematic view of a fixing device for a liquid cooling pipe according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bracket according to an embodiment of the present invention.
In the figure:
1-harmonica tube;
2-collecting pipe;
3-a flow guide pipe; 31-liquid inlet; 32-a liquid outlet;
4-a support assembly; 41-a bracket; 411 — first connection; 4111-connecting hole; 412-a second connection; 413-a third connection; 42-a binding tape; 43-expansion bolts;
5-a catheter assembly; 51-a branch pipe; 52-pipe joint.
Detailed Description
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 be described in further detail with reference to the accompanying drawings, and obviously, 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 skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The present embodiment provides a fixing device for liquid cooling pipes, as shown in fig. 1, which includes a collecting pipe 2, a flow guiding pipe 3 and a plurality of supporting members 4. Specifically, the flow guide pipe 3 is arranged at an interval with the collecting pipe 2 and is communicated with the collecting pipe 2; one end of each supporting assembly 4 is connected with the collecting pipe 2, the other end of each supporting assembly 4 is connected with the flow guide pipe 3, and the supporting assemblies are used for supporting the flow guide pipe 3.
The honeycomb duct 3 is connected to the collecting pipe 2 through the supporting assembly 4, so that the fixing device of the liquid cooling pipeline forms an independent whole, the honeycomb duct 3 and the battery module are independently arranged, the honeycomb duct is not required to be installed on the wall of the tank, the pipeline far away from the wall of the tank can be fixed, the flexibility of disassembly and assembly is improved, and the installation is more convenient; the box wall and the reinforcing ribs are not required to be punched, so that the strength and the sealing property of the box body are improved; leakage can be prevented from flowing into the battery module, and the use safety of the battery module is improved; in addition, connect through supporting component 4, simple structure and simple to operate, and honeycomb duct 3 avoids honeycomb duct 3 and pressure manifold 2 direct contact through supporting component 4 and pressure manifold 2 to honeycomb duct 3 and pressure manifold 2 dispel the heat respectively.
In this embodiment, as shown in fig. 1, the fixing device includes a plurality of collecting pipes 2, each collecting pipe 2 is connected to the flow guide pipe 3 through a support assembly 4, so that the flow guide pipe 3 is connected to the collecting pipe 2 through the support assembly 4, and the plurality of support assemblies 4 make the flow guide pipe 3 installed stably; in other embodiments, the fixing device may only include one collecting pipe 2, and a supporting assembly 4 may be respectively installed at two ends of one collecting pipe 2, so that the flow guiding pipe 3 is stably installed on the collecting pipe 2; the collecting pipe 2 and the guide pipe 3 are arranged between the two supporting assemblies 4 at intervals, so that heat dissipation is facilitated.
Specifically, as shown in fig. 1 and fig. 2, the supporting assembly 4 includes a bracket 41 and a fixing member, the fixing member is connected to the bracket 41, the fixing member is used for fixing the flow guide pipe 3, the bracket 41 is connected to the flow guide pipe 2, the bracket 41 and the fixing member realize the fixed connection between the flow guide pipe 3 and the flow guide pipe 2, and the structure is simple and reliable; the honeycomb duct 3 is supported through a plurality of supporting components 4 at intervals, so that the honeycomb duct 3 is kept stable, the installation stability of the honeycomb duct 3 is improved, the supporting components 4 are arranged at intervals, the contact areas of the supporting components 4 and the honeycomb duct 3 and the honeycomb duct 2 are respectively reduced, and the heat dissipation effect of the honeycomb duct 3 and the honeycomb duct 4 is improved.
In this embodiment, as shown in fig. 3, the bracket 41 is in a shape of a "u" and includes a first connecting portion 411 connected to the fixing member, two second connecting portions 412 connected to the collecting pipe 2, and two third connecting portions 413 respectively used for connecting the first connecting portion 411 and the two second connecting portions 412, the two second connecting portions 412 and the two third connecting portions 413 are respectively symmetrically disposed at two sides of the first connecting portion 411, the bracket 41 has a simple structure and a small volume and weight, so as to reduce the space occupied by the pipeline installation and reduce the weight of the fixing device of the liquid cooling pipeline; alternatively, the bracket 41 may be made by sheet metal stamping and bending.
Further optionally, connecting hole 4111 has been seted up on first connecting portion 411, and the fixing device of liquid cooling pipeline still includes the fastener, and the fastener passes connecting hole 4111 and connects the mounting on first connecting portion 411, the mounting dismouting of being convenient for to honeycomb duct 3 and the dismouting of pressure manifold 2 of being convenient for. The expansion bolt 43 has good tensile and anti-loose functions, in the embodiment, the fastening member is the expansion bolt 43, so that the connection strength of the fixing member and the bracket 41 is improved.
Optionally, the second connection portion 412 is welded to the header pipe 2, so that the connection strength between the bracket 41 and the header pipe 2 is improved, and the structural strength or the sealing performance of the header pipe 2 is prevented from being affected by riveting or screwing. Because the 3003 aluminum alloy has good welding performance, in the embodiment, the bracket 41 is made of the 3003 aluminum alloy material, so that the bracket 41 can be welded to the header 2 conveniently.
In this embodiment, the mounting is ribbon 42, and during the installation, ribbon 42 passes the through-hole on expansion bolts 43 earlier and connects on expansion bolts 43, and honeycomb duct 3 is put on support 41, and ribbon 42 forms the encirclement ring around honeycomb duct 3 and ties up, simple structure, and the operation of being convenient for, and installation reliability is good. In other embodiments, the fixing member may also be a pipe clamp, the pipe clamp is convenient for dismounting the flow guide pipe 3, and the pipe clamp can be reused, and the flow guide pipe 3 can be more stably mounted on the bracket 41 through the pipe clamp.
Referring to fig. 1 and 2, optionally, the fixing device of the liquid cooling pipeline further includes a pipe assembly 5, the pipe assembly 5 is communicated with the collecting pipe 2 and the flow guide pipe 3, and the pipe assembly 5 supports the flow guide pipe 3 on the collecting pipe 2, and the flow guide pipe 3 is supported in an auxiliary manner through the pipe assembly 5, so that the installation stability of the flow guide pipe 3 and the flow guide pipe 2 is improved. Further alternatively, the duct assembly 5 includes a branch pipe 51 and a pipe joint 52, the branch pipe 51 is communicated with the header 2, the pipe joint 52 is communicated with the branch pipe 51 and the header 3, and the header 3 and the header 2 are communicated and connected through the branch pipe 51 and the pipe joint 52, the structure is simple, quick connection and installation are achieved, assembly requirements are reduced, expansibility is improved, and the branch pipe 51 and the pipe joint 52 are rigidly connected, so that installation stability of the header 3 and the header 2 is improved. Optionally, the branch pipe 51 can be welded and connected to the collecting pipe 2, the other end of the branch pipe 51 can be provided with connecting threads, the pipe joint 52 can be a three-way pipe to connect the flow guide pipe 3 and the branch pipe 51, the disassembly and assembly are convenient, the connecting strength of the welding connection and the threaded connection is high, and the flow guide pipe 3 and the collecting pipe 2 can be stably and reliably connected. Alternatively, the distance between the draft tube 3 and the header 2 is set by the height of the branch tube 51 and the height of the bracket 41 to secure heat dissipation and installation space.
Optionally, the fixing device of the liquid cooling pipeline is used for the liquid cooling plate assembly, the liquid cooling plate assembly further comprises one or more harmonica tubes 1, and the collecting pipes 2 are arranged at two ends of the harmonica tubes 1 and communicated with the harmonica tubes 1; the liquid cooling plate assembly comprises two flow guide pipes 3, wherein the two flow guide pipes 3 are respectively arranged on the flow collecting pipes 2 at two ends and are respectively used for conveying cold liquid and recovering hot liquid to the flow collecting pipes 2 and the harmonica pipe 1, so that cooling is realized.
Usually, the liquid cooling plate assembly comprises a plurality of harmonica tubes 1 which are connected in parallel so as to adapt to battery modules with different sizes, and as the corrugated tubes have elasticity, optionally, the flow guide tube 3 is a corrugated tube so as to be flexibly connected and conveniently adjust the positions of the harmonica tubes 1; optionally, the flow guide tube 3 comprises a plurality of sections of corrugated tubes and tube hoops for connecting the corrugated tubes to form flow guide tubes 3 with different lengths, so that the use flexibility is improved, and the flow guide tube 3 is suitable for the applicability of harmonica tubes 1 with different numbers or battery modules with different sizes; in actual production, the honeycomb ducts 3 with standard lengths can be produced, so that batch production is facilitated, and the production cost is reduced.
Referring to fig. 1 to 3, in the present embodiment, the liquid cooling plate assembly includes a plurality of harmonica tubes 1, the plurality of harmonica tubes 1 are arranged in parallel, and the harmonica tubes 1 are arranged in parallel at intervals to improve a cooling effect; the collecting pipes 2 at two ends of each harmonica pipe 1 are respectively a first collecting pipe and a second collecting pipe, and the flow guide pipe 3 comprises a first flow guide pipe connected with the first collecting pipe and a second flow guide pipe connected with the second collecting pipe so as to form circulating flow of cooling liquid in the harmonica pipe 1 and the outside; specifically, a plurality of duct assemblies 5 are connected to the first duct and the second duct, and each duct assembly 5 is communicated with one first collecting pipe or one second collecting pipe, so that the first duct is communicated with each first collecting pipe through each duct assembly 5, and the second duct is communicated with each second collecting pipe through each duct assembly 5, so that a plurality of harmonica tubes 1 connected in parallel are communicated with the outside to circulate the cooling liquid. Specifically, each first collecting pipe and each second collecting pipe are welded with a support, so that the first guide pipe and the second guide pipe are stably installed.
During the use, cold coolant liquid gets into first honeycomb duct, and the coolant liquid in the first honeycomb duct passes through first pressure manifold, later enters into harmonica pipe 1, and the coolant liquid in the harmonica pipe 1 is used for cooling the battery, and after the cooling, the coolant liquid is taken away the heat in the battery, and the coolant liquid temperature rise becomes hot coolant liquid, and hot coolant liquid enters into the second pressure manifold from harmonica pipe 1, later reentrant second honeycomb duct, and hot coolant liquid exports to the outside. Specifically, a liquid inlet 31 is arranged on the first flow guide pipe, and a liquid outlet 32 is arranged on the second flow guide pipe and is respectively used for being communicated with an external structure; alternatively, the liquid inlet 31 and the liquid outlet 32 are connected and communicated with the outside through quick couplings, respectively, to achieve quick disassembly.
This embodiment still provides a battery package, and it includes the fixing device of foretell liquid cooling pipeline, and the fixing device mutually independent installation of battery module and liquid cooling pipeline has improved the dismouting flexibility and the convenience of the fixing device of liquid cooling pipeline, has improved the installation convenience of battery package, need not to carry out erection joint through welded connection spare or beating the mounting hole on the box wall, has improved structural strength and leakproofness, and in addition, the independent installation is used the security good, and the thermal diffusivity is better.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A fixing device of a liquid cooling pipeline is characterized by comprising:
a header pipe (2);
the flow guide pipe (3) is arranged at an interval with the collecting pipe (2) and is communicated with the collecting pipe (2);
the flow guide pipe is characterized by comprising a plurality of supporting assemblies (4), one end of each supporting assembly (4) is connected with the collecting pipe (2), the other end of each supporting assembly (4) is connected with the flow guide pipe (3), and the supporting assemblies (4) are used for supporting the flow guide pipe (3).
2. The apparatus for fixing liquid cooling pipes according to claim 1, wherein the support assembly (4) comprises a bracket (41) and a fixing member, the fixing member is connected to the bracket (41), the fixing member is connected to the flow guide pipe (3), the bracket (41) is connected to the flow collecting pipe (2), and a plurality of the support assemblies (4) are arranged at intervals.
3. The fixing apparatus of liquid cooling pipes according to claim 2, wherein the holder (41) is in a shape of a Chinese character ji, and comprises a first connecting portion (411) connected to the fixing member, two second connecting portions (412) connected to the collecting pipe (2), and two third connecting portions (413) for connecting the first connecting portion (411) and the two second connecting portions (412), respectively, wherein the two second connecting portions (412) and the two third connecting portions (413) are symmetrically disposed at two sides of the first connecting portion (411), respectively.
4. The apparatus as claimed in claim 3, wherein the first connecting portion (411) has a connecting hole (4111), and the apparatus further comprises a fastening member passing through the connecting hole (4111) to connect the fastening member to the first connecting portion (411).
5. The apparatus of claim 4, wherein the fasteners are expansion bolts (43).
6. The apparatus as claimed in claim 3, wherein the second connecting portion (412) is welded to the header (2).
7. A liquid-cooled pipe fixing device according to any one of claims 2-6, characterized in that the fixing member is a tie (42) or a pipe clip.
8. A device for fixing liquid-cooled pipes according to any of claims 1-6, characterized in that the device further comprises a pipe assembly (5), the pipe assembly (5) is connected to the header pipe (2) and the flow guide pipe (3), and the pipe assembly (5) supports the flow guide pipe (3) on the header pipe (2).
9. The apparatus as claimed in claim 8, wherein the pipe assembly (5) comprises a branch pipe (51) and a pipe joint (52), the branch pipe (51) communicating with the manifold (2), and the pipe joint (52) communicating the branch pipe (51) with the flow guide pipe (3).
10. A battery pack comprising the liquid-cooled pipe fixing device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021861120.8U CN212874590U (en) | 2020-08-31 | 2020-08-31 | Fixing device and battery package of liquid cooling pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021861120.8U CN212874590U (en) | 2020-08-31 | 2020-08-31 | Fixing device and battery package of liquid cooling pipeline |
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| CN212874590U true CN212874590U (en) | 2021-04-02 |
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| CN202021861120.8U Active CN212874590U (en) | 2020-08-31 | 2020-08-31 | Fixing device and battery package of liquid cooling pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629312A (en) * | 2021-06-25 | 2021-11-09 | 东风汽车集团股份有限公司 | Liquid cooling device, power battery and vehicle |
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2020
- 2020-08-31 CN CN202021861120.8U patent/CN212874590U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629312A (en) * | 2021-06-25 | 2021-11-09 | 东风汽车集团股份有限公司 | Liquid cooling device, power battery and vehicle |
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