CN117117416A - High-strength light-weight liquid-cooled battery box and battery pack - Google Patents

High-strength light-weight liquid-cooled battery box and battery pack Download PDF

Info

Publication number
CN117117416A
CN117117416A CN202311191263.0A CN202311191263A CN117117416A CN 117117416 A CN117117416 A CN 117117416A CN 202311191263 A CN202311191263 A CN 202311191263A CN 117117416 A CN117117416 A CN 117117416A
Authority
CN
China
Prior art keywords
plate
flow channel
runner
flat plate
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311191263.0A
Other languages
Chinese (zh)
Inventor
陈通
嵇焱成
曹开强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Wenxuan New Energy Technology Co ltd
Original Assignee
Hefei Wenxuan New Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Wenxuan New Energy Technology Co ltd filed Critical Hefei Wenxuan New Energy Technology Co ltd
Priority to CN202311191263.0A priority Critical patent/CN117117416A/en
Publication of CN117117416A publication Critical patent/CN117117416A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)

Abstract

The application discloses a high-strength lightweight liquid-cooled battery box and a battery pack, wherein the high-strength lightweight liquid-cooled battery box comprises: the tray assembly comprises a bottom guard plate, the liquid cooling plate is arranged in the tray assembly, a flow guide supporting layer is arranged in a flow channel cavity and a three-dimensional net-shaped structural body is arranged in an interlayer space, the liquid cooling plate comprises a flat plate and a flow channel plate, one side of the flow channel plate is matched and connected with the flat plate to form the flow channel cavity, the other side of the flow channel plate and the bottom guard plate form an interlayer space, the flow guide supporting layer is connected to the flow channel plate and the flat plate, and the three-dimensional net-shaped structural body is connected to the flow channel plate and the bottom guard plate so that the flow channel plate, the flat plate and the bottom guard plate form a double-layer supporting structure. The flow channel plate is connected with the flat plate through the flow guide supporting layer and is connected with the bottom guard plate through the three-dimensional net-shaped structural body to form a double-layer supporting structure, so that the bearing performance of the liquid cooling plate is enhanced, the liquid cooling plate is prevented from deforming, and the heat dissipation effect of the liquid cooling plate on a battery is improved.

Description

High-strength light-weight liquid-cooled battery box and battery pack
Technical Field
The application relates to the technical field of battery boxes of new energy automobiles, in particular to a high-strength lightweight liquid-cooled battery box and a battery pack.
Background
Because the battery adopts the liquid cooling plate for cooling, the battery cooling system has the advantages of high cooling efficiency, compact structure, mature process and the like, and the liquid cooling battery management system has become a mainstream battery cooling mode of the electric vehicle.
The liquid cooling plate made of aluminum is the first choice in the industry in consideration of heat dissipation performance, product quality, manufacturing cost and other factors.
However, the aluminum liquid cooling plate has poor structural strength, and needs to be connected with the box tray through friction stir welding for forming, so that the strength of the whole liquid cooling tray is improved.
In addition, the liquid cooling plate made of aluminum is easy to bend and deform due to the special thin-wall structure, and the flatness of the liquid cooling plate is further deteriorated after stress release through a high-temperature brazing process.
It can be seen that the structural strength of the liquid cooling plate of aluminum material is lower, and the liquid cooling plate has the risk of being bent and deformed by pressure when bearing the weight of the battery, and the risk that the liquid cooling plate is deformed can increase the coolant and reveal, has also reduced the heat conduction efficiency between battery and the liquid cooling plate simultaneously, has also reduced heating or refrigerated efficiency.
Accordingly, the prior art is in need of improvement.
Disclosure of Invention
The application aims to provide a high-strength lightweight liquid-cooled battery box and a battery pack, which aim to control deformation of a liquid-cooled plate and improve the heat dissipation performance of the liquid-cooled battery box.
In order to achieve the above purpose, the application adopts the following technical scheme:
the application provides a high-strength lightweight liquid-cooled battery box, which comprises:
a tray assembly including a bottom shield;
the liquid cooling plate is arranged in the tray assembly and comprises a flat plate and a runner plate, one side of the runner plate is connected with the flat plate in a matched manner to form a runner cavity, and the other side of the runner plate and the bottom guard plate form an interlayer space;
the flow guide supporting layer is positioned in the flow channel cavity and is connected with the flow channel plate and the flat plate;
the three-dimensional net-shaped structure body is positioned in the interlayer space and connected with the runner plate and the bottom guard plate, so that the runner plate, the flat plate and the bottom guard plate form a double-layer supporting structure.
In one embodiment, one side of the diversion supporting layer is connected with the flat plate through welding, and the other side of the diversion supporting layer is connected with the runner plate through welding;
one side of the three-dimensional net-shaped structure body is connected with the runner plate through welding, and the other side of the three-dimensional net-shaped structure body is connected with the bottom guard plate through welding.
In one embodiment, the flow guiding support layer comprises one of the following structures:
fins and water dividing strips.
In one embodiment, the flow guiding support layer comprises one of the following structures:
honeycomb core plate and fin.
In one embodiment, the runner plate is provided with a groove and a convex rib part arranged in the groove, the groove and the convex rib part form a first runner, a second runner, a third runner, a fourth runner and a fifth runner, the first runner, the second runner, the third runner and the fourth runner are sequentially communicated to form an S-shaped runner cavity, and the first runner is communicated with the fourth runner through the fifth runner;
the first flow channel, the second flow channel, the third flow channel and the fourth flow channel are internally provided with the diversion supporting layer.
In one embodiment, the flow directing support layer comprises: a first support fin, a second support fin, a third support fin and a fourth support fin,
the first support fins are positioned in the first runner and connected with the runner plate and the flat plate;
the second supporting fins are positioned in the second flow channel and connected with the flow channel plate and the flat plate;
the third supporting fins are positioned in the third runner and connected with the runner plate and the flat plate;
the fourth supporting fin is located in the fourth runner and connected to the runner plate and the flat plate.
In one embodiment, the flow directing support layer comprises: a set of two parallel water splitting bars, the set of water splitting bars comprising: a first water diversion strip group, a second water diversion strip group, a third water diversion strip group and a fourth water diversion strip group,
the first water diversion strip group is positioned in the first runner and connected with the runner plate and the flat plate;
the second water diversion strip group is positioned in the second flow channel and is connected with the flow channel plate and the flat plate;
the third water diversion strip group is positioned in the third flow channel and is connected with the flow channel plate and the flat plate;
the fourth water diversion strip group is positioned in the fourth flow channel and is connected with the flow channel plate and the flat plate.
In one embodiment, the liquid cooling plate further comprises:
the liquid inlet is fixed on the flat plate and is communicated with the first flow channel;
the liquid outlet is fixed on the flat plate and communicated with the fourth flow channel, and the liquid inlet and the liquid outlet are positioned on the same side of the flat plate;
and the module mounting beams are connected to one side of the flat plate, which is far away from the flow channel plate.
In one embodiment, the tray assembly further comprises: the box body frame is connected with the bottom guard plate to form a box body structure which is used for accommodating the liquid cooling plate,
the case frame includes: the device comprises a first cross beam, a first longitudinal beam, a second cross beam and a second longitudinal beam, wherein the first cross beam, the first longitudinal beam, the second cross beam and the second longitudinal beam are sequentially connected in a closed mode.
The application also provides a battery pack, wherein the battery pack comprises the high-strength lightweight liquid-cooled battery box body, so that the battery pack can have all the characteristics and effects of the high-strength lightweight liquid-cooled battery box body and is not repeated.
The high-strength lightweight liquid-cooled battery box and the battery pack provided by the application have the beneficial effects that:
the application discloses a high-strength lightweight liquid-cooled battery box and a battery pack, wherein the high-strength lightweight liquid-cooled battery box comprises: the tray assembly comprises a bottom guard plate, the liquid cooling plate is arranged in the tray assembly, a flow guide supporting layer is arranged in a flow channel cavity and a three-dimensional net-shaped structural body is arranged in an interlayer space, the liquid cooling plate comprises a flat plate and a flow channel plate, one side of the flow channel plate is matched and connected with the flat plate to form the flow channel cavity, the other side of the flow channel plate and the bottom guard plate form an interlayer space, the flow guide supporting layer is connected to the flow channel plate and the flat plate, and the three-dimensional net-shaped structural body is connected to the flow channel plate and the bottom guard plate so that the flow channel plate, the flat plate and the bottom guard plate form a double-layer supporting structure. According to the application, the flow channel plate is connected with the flat plate through the flow guide supporting layer and is connected with the bottom guard plate through the three-dimensional net-shaped structure, on one hand, the flow guide supporting layer can improve the flow resistance in the flow channel cavity, so that the flow velocity of the flow channel cavity is reduced, the heat exchange efficiency of fluid and a heat source is improved, and on the other hand, the flow guide supporting layer and the three-dimensional net-shaped structure form a double-layer supporting structure, so that the bearing performance of the liquid cooling plate is enhanced, the deformation of the liquid cooling plate is prevented, and the heat dissipation effect of the liquid cooling plate on a battery is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a high-strength lightweight liquid-cooled battery box provided by an embodiment of the application;
fig. 2 is a schematic structural diagram of a first specific embodiment of a high-strength lightweight liquid-cooled battery box according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a second embodiment of a high-strength lightweight liquid-cooled battery box according to an embodiment of the present application;
FIG. 4 is a schematic structural view of an embodiment of a flow field plate according to an embodiment of the present application;
fig. 5 is a perspective view of a high-strength lightweight liquid-cooled battery box according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a third embodiment of a high-strength lightweight liquid-cooled battery box according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a fourth embodiment of a high-strength lightweight liquid-cooled battery box according to an embodiment of the present application.
Wherein, each reference sign in the figure:
100. a tray assembly; 200. a liquid cooling plate; 300. a diversion support layer; 400. a three-dimensional net-like structure; 110. a bottom guard board; 120. a box frame; 120a, a flanging structure; 120b, a planar structure; 121. a first cross beam; 122. a first stringer; 123. a second cross beam; 124. a second stringer; 210. a flat plate; 220. a flow channel plate; 230. a flow channel cavity; 240. an interlayer space; 250. a liquid inlet; 260. a liquid outlet; 270. a module mounting beam; 221. a groove; 222. a convex rib part; 223. a first connection groove; 224. a second connecting groove; 231. a first flow passage; 232. a second flow passage; 233. a third flow passage; 234. a fourth flow passage; 235. a fifth flow passage; 310. a fin; 320. a water dividing strip; 311. a first support fin; 312. a second support fin; 313. a third support fin; 314. a fourth support fin; 321. a first water dividing strip group; 322. a second water dividing strip group; 323. a third water dividing strip group; 324. a fourth water dividing strip group; 410. honeycomb core board.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
Referring to fig. 1, the embodiment provides a high-strength lightweight liquid-cooled battery box, which includes: the tray assembly 100, the liquid cooling plate 200 arranged in the tray assembly 100, the flow guide supporting layer 300 positioned in the runner cavity 230 and the three-dimensional net-shaped structure 400 positioned in the interlayer space 240, the tray assembly 100 comprises a bottom guard plate 110, the liquid cooling plate 200 comprises a flat plate 210 and a runner plate 220, one side of the runner plate 220 is matched and connected with the flat plate 210 to form the runner cavity 230, the other side of the runner plate 220 and the bottom guard plate 110 form the interlayer space 240, the flow guide supporting layer 300 is connected with the runner plate 220 and the flat plate 210, and the three-dimensional net-shaped structure 400 is connected with the runner plate 220 and the bottom guard plate 110 to form a double-layer supporting structure with the runner plate 220, the flat plate 210 and the bottom guard plate 110.
In this embodiment, the liquid cooling plate 200 not only functions as a heat dissipating device, but also needs to provide supporting and fixing functions for the battery heat source, and generally, a heat conducting material needs to be filled between the battery heat source and the liquid cooling plate 200 to increase the contact area between the battery heat source and the liquid cooling plate 200. According to thermal performance analysis, it is known that under the condition that the thermal coefficient of the heat conducting material is constant, the thinner the material is, the smaller the thermal resistance is, and the better the heat transfer performance is, so that the smaller the flatness of the liquid cooling plate 200 is required, and therefore, the deformation problem of the liquid cooling plate 200 needs to be solved in this embodiment.
In this embodiment, the flat plate 210, the runner plate 220 and the bottom guard plate 110 are sequentially stacked, where the flat plate 210 and the runner plate 220 are connected to form a runner cavity 230 for cooling liquid to circulate, and a flow guiding support layer 300 is disposed in the runner cavity 230, and one side of the flow guiding support layer 300 is connected to the flat plate 210, and the other side is connected to the runner plate 220. In the first aspect, the flow guiding support layer 300 can improve the flow resistance in the flow channel cavity 230, thereby reducing the flow velocity in the flow channel cavity 230, improving the heat exchange efficiency of the cooling liquid and the heat source, and improving the heat dissipation performance of the liquid cooling plate 200; in the second aspect, the flow guiding support layer 300 is connected to the flat plate 210 and the flow channel plate 220, and the flow guiding support layer 300 can act as a reinforcing rib of the flow channel cavity 230, so that the overall strength of the flow channel cavity 230 is improved, and the liquid cooling plate 200 can be prevented from deforming; in the third aspect, the flow channel plate 220 is connected with the bottom guard plate 110 through the three-dimensional mesh structure 400, so that the three-dimensional mesh structure 400 and the flow guiding support layer 300 form a double-layer support structure on the flow channel plate 220, the structural strength of the liquid cooling plate 200 can be further enhanced, the bearing performance of the liquid cooling plate 200 is ensured, the liquid cooling plate 200 is prevented from deforming, the liquid cooling plate 200 is kept flat during bearing, the heat conduction efficiency between the battery and the liquid cooling plate 200 is improved, and the cooling performance of the liquid cooling plate 200 is enhanced.
For example, the flow channel plate 220 and the flat plate 210 form a flow channel cavity 230, a flow guide supporting layer 300 is disposed in the flow channel cavity 230, the flow channel plate 220 is connected with the flat plate 210 through the flow guide supporting layer 300, and one side of the flow channel plate 220 away from the flat plate 210 is connected with the bottom guard plate 110 through a three-dimensional net-shaped structure 400. The flow guiding supporting layer 300 can be integrated with the flow channel plate 220 and the flat plate 210, the flow guiding supporting layer 300 has the functions of turbulence and reinforcing ribs, in addition, the three-dimensional net-shaped structure 400 has the advantages of light weight and high strength, the rigidity and the flatness are high, the three-dimensional net-shaped structure 400 is combined with the flow channel plate 220 and the bottom guard plate 110 to form a high-strength bearing structure, the load can be uniformly distributed on the plane of the liquid cooling plate 200, stress concentration is avoided, the bending resistance and the torsion resistance are excellent, meanwhile, the strength brought by the three-dimensional net-shaped structure 400 is improved, the requirement on the wall thickness of the liquid cooling plate 200 can be reduced, namely the thickness of the flow channel plate 220 and the thickness of the flat plate 210 can be properly thinned, the three-dimensional net-shaped structure 400 has the characteristics of light weight, and the light weight benefit is obvious.
The three-dimensional net structure 400 has high compressive strength, the three-dimensional net structure 400 is connected with the bottom guard plate 110, and the bottom guard plate 110 is connected with the runner plate 220 through the three-dimensional net structure 400, the three-dimensional net structure 400 which is connected with each other is uniformly distributed on the surface of the runner plate 220 like innumerable I-shaped steels, and is not easy to generate shearing deformation, so that the whole structure is more stable, the three-dimensional net structure 400 has strong structure maintainability, and even if the three-dimensional net structure is overloaded and compressed and deformed, the three-dimensional net structure 400 can still maintain a certain bearing capacity without the phenomenon of collapse.
The liquid cooling plate 200 in the prior art is poor in structural strength, and is easy to deform, so that the flatness of the contact surface of the liquid cooling plate 200 and the battery module is poor, and effective heat transfer cannot be guaranteed, therefore, a large amount of heat conduction material needs to be smeared to absorb manufacturing tolerances of parts, and in the embodiment, the three-dimensional net-shaped structural bodies 400 and the flow guide supporting layers 300 are respectively connected to two sides of the flow channel plate 220 to form a double-layer supporting structure, so that the deformation of the liquid cooling plate 200 can be effectively restrained, the flatness of the liquid cooling plate 200 is guaranteed, the use amount of heat conduction materials can be reduced, the heat resistance is smaller, and the cost can be reduced.
Therefore, in the present application, the flow channel plate 220 is connected to the flat plate 210 through the flow guiding support layer 300 and is connected to the bottom guard plate 110 through the three-dimensional mesh structure 400, on one hand, the flow guiding support layer 300 can increase the flow resistance in the flow channel cavity 230, thereby reducing the flow velocity of the flow channel cavity 230 and improving the heat exchange efficiency of the fluid and the heat source, and on the other hand, the flow guiding support layer 300 and the three-dimensional mesh structure 400 form a double-layer support structure for enhancing the bearing performance of the liquid cooling plate 200, preventing the deformation of the liquid cooling plate 200 and improving the heat dissipation effect of the liquid cooling plate 200 on the battery.
Specifically, referring to fig. 1, one side of the flow guiding support layer 300 is connected to the flat plate 210 by welding, and the other side is connected to the flow channel plate 220 by welding; one side of the three-dimensional net-shaped structure 400 is welded to the flow channel plate 220, and the other side is welded to the bottom guard plate 110.
In this embodiment, the flow guiding support layer 300 may form an i-beam structure with the flat plate 210 and the runner plate 220 through welding, so as to enhance the structural strength of the liquid cooling plate 200, prevent the liquid cooling plate 200 from deforming, and meanwhile, the flow guiding support layer 300 may guide the cooling liquid in the runner cavity 230, ensure the uniformity of the cooling liquid in the runner cavity 230, and improve the heat dissipation balance of the liquid cooling plate 200, thereby improving the heat dissipation performance of the liquid cooling plate 200 to the battery. The three-dimensional net-shaped structure 400 can be welded with the runner plate 220 and the bottom guard plate 110 to form a whole, so as to enhance the section moment of inertia and bending load capacity of the liquid cooling plate 200 and prevent the liquid cooling plate 200 from deforming.
Alternatively, the flow guiding support layer 300 may comprise one of the following structures:
fins 310 (shown in fig. 2) and water dividing strips 320 (shown in fig. 3).
For example, referring to fig. 2, the flow guiding support layer 300 may include fins 310, for example, the fins 310 may be disposed in the flow channel cavity 230 of the liquid cooling plate 200, and the fins 310 may be connected to the flat plate 210 and the flow channel plate 220 by welding to prevent deformation of the liquid cooling plate 200.
For example, referring to fig. 3, the flow-guiding supporting layer 300 may include a water-dividing strip 320, for example, the water-dividing strip 320 may be placed in the flow channel cavity 230 of the liquid-cooling plate 200, and the water-dividing strip 320 may be connected to the flat plate 210 and the flow channel plate 220 by welding to prevent deformation of the liquid-cooling plate 200.
Alternatively, the three-dimensional mesh structure 400 includes one of the following structures:
a honeycomb core plate 410 (shown in fig. 3) and fins 310 (shown in fig. 2).
For example, the three-dimensional mesh structure 400 includes a honeycomb core 410, for example, the honeycomb core 410 may be disposed between the runner plate 220 and the bottom guard plate 110, and the honeycomb core 410 may be connected to the runner plate 220 and the bottom guard plate 110 by welding, so as to enhance the moment of inertia and bending load capacity of the liquid cooling plate 200 and prevent the liquid cooling plate 200 from deforming.
For example, the three-dimensional mesh structure 400 includes fins 310, for example, the fins 310 may be disposed between the runner plate 220 and the bottom guard plate 110, and the fins 310 may be connected to the runner plate 220 and the bottom guard plate 110 by welding, so as to enhance the cross-sectional moment of inertia and the bending load capacity of the liquid cooling plate 200 and prevent the liquid cooling plate 200 from deforming.
Specifically, referring to fig. 4, the flow channel plate 220 has a groove 221 and a rib portion 222 disposed in the groove 221, the groove 221 and the rib portion 222 form a first flow channel 231, a second flow channel 232, a third flow channel 233, a fourth flow channel 234 and a fifth flow channel 235, the first flow channel 231, the second flow channel 232, the third flow channel 233 and the fourth flow channel 234 are sequentially communicated to form an S-shaped flow channel cavity, and the first flow channel 231 is communicated with the fourth flow channel 234 through the fifth flow channel 235; the first flow channel 231, the second flow channel 232, the third flow channel 233 and the fourth flow channel 234 are respectively provided with a diversion support layer 300.
In this embodiment, the runner plate 220 forms the first runner 231, the second runner 232, the third runner 233, the fourth runner 234 and the fifth runner 235 through the grooves 221 and the ribs 222, the first runner 231, the second runner 232, the third runner 233 and the fourth runner 234 are sequentially communicated to form an S-shaped runner cavity, and the first runner 231 is communicated with the fourth runner 234 through the fifth runner 235, that is, the fifth runner 235 is equivalent to the flow guiding channels of the first runner 231 and the fourth runner 234, and the flow guiding supporting layers 300 are respectively arranged in the first runner 231, the second runner 232, the third runner 233 and the fourth runner 234 to enhance the uniformity of the cooling liquid in the runner cavity 230, so as to enhance the heat dissipation balance of the liquid cooling plate 200, and further enhance the heat dissipation performance of the liquid cooling plate 200 on the battery, and meanwhile, the flow guiding supporting layers 300 can be connected with the flat plate 210 and the runner plate 220 through welding to form a whole, so as to enhance the bearing performance of the liquid cooling plate 200, prevent the liquid cooling plate 200 from deforming, and enhance the heat dissipation effect of the liquid cooling plate 200 on the battery.
Optionally, referring to fig. 2, the flow guiding support layer 300 may include: the first support fins 311, the second support fins 312, the third support fins 313 and the fourth support fins 314, the first support fins 311 are located in the first flow channels 231, and the first support fins 311 are connected to the flow channel plate 220 and the flat plate 210; the second supporting fins 312 are located in the second flow channels 232, and the second supporting fins 312 are connected to the flow channel plate 220 and the flat plate 210; the third supporting fin 313 is located in the third flow channel 233, and the third supporting fin 313 is connected to the flow channel plate 220 and the flat plate 210; the fourth support fin 314 is located in the fourth runner 234, and the fourth support fin 314 is connected to the runner plate 220 and the flat plate 210.
In this embodiment, the first supporting fin 311 is located in the first flow channel 231, the second supporting fin 312 is located in the second flow channel 232, the third supporting fin 313 is located in the third flow channel 233, and the fourth supporting fin 314 is located in the fourth flow channel 234, where the fins 310 can improve the heat dissipation performance of the cooling liquid in the flow channel cavity 230, and the first supporting fin 311, the second supporting fin 312, the third supporting fin 313 and the fourth supporting fin 314 all have turbulence effects, so that the circulation resistance in the flow channel cavity 230 can be improved, the flow rate in the area can be reduced, the heat exchange efficiency of the cooling liquid and the battery heat source can be improved, and the first supporting fin 311, the second supporting fin 312, the third supporting fin 313 and the fourth supporting fin 314 can be welded with the flat plate 210 and the flow channel plate 220 to form a plurality of i-beam structures, so as to enhance the bearing performance of the liquid cooling plate 200, prevent the liquid cooling plate 200 from deforming, and improve the heat dissipation effect of the liquid cooling plate 200 on the battery.
Optionally, referring to fig. 3, the flow guiding support layer 300 may include: a water dividing strip group consisting of two parallel water dividing strips, the water dividing strip group comprising: the first water diversion strip group 321, the second water diversion strip group 322, the third water diversion strip group 323 and the fourth water diversion strip group 324, wherein the first water diversion strip group 321 is positioned in the first flow channel 231 and the first water diversion strip group 321 is connected with the flow channel plate 220 and the flat plate 210; the second water diversion strip group 322 is located in the second flow channel 232, and the second water diversion strip group 322 is connected to the flow channel plate 220 and the flat plate 210; the third water diversion strip group 323 is positioned in the third flow channel 233, and the third water diversion strip group 323 is connected with the flow channel plate 220 and the flat plate 210; the fourth set of water separation strips 324 is disposed within the fourth flow channel 234 and the fourth set of water separation strips 324 is connected to the flow field plate 220 and the plate 210.
In this embodiment, the diversion support layer 300 may be formed by two parallel water diversion strips, for example, a first water diversion strip group 321 is disposed in the first flow channel 231, a second water diversion strip group 322 is disposed in the second flow channel 232, a third water diversion strip group 323 is disposed in the third flow channel 233, a fourth water diversion strip group 324 is disposed in the fourth flow channel 234, that is, two parallel water diversion strips 320 are disposed in the first flow channel 231, the two parallel water diversion strips 320 may divide the first flow channel 231 into 3 channels for cooling liquid to circulate, two parallel water diversion strips 320 are disposed in the second flow channel 232, two parallel water diversion strips 320 may divide the second flow channel 232 into 3 channels for cooling liquid to circulate, two parallel water diversion strips 320 are disposed in the third flow channel 233, two parallel water diversion strips 320 may divide the third flow channel 233 into 3 channels for cooling liquid to circulate, two parallel water diversion strips 320 are disposed in the fourth flow channel 234, and two parallel water diversion strips 320 may divide the fourth flow channel 234 into 3 channels for cooling liquid to circulate. The water diversion strips 320 are arranged in the runner cavity 230 and can divert the cooling liquid in the runner cavity 230, so that the uniformity of the cooling liquid in the runner cavity 230 is ensured, and the heat dissipation balance of the liquid cooling plate 200 is improved; on the other hand, the water diversion strips 320 are respectively welded with the runner plate 220 and the flat plate 210 to form an i-beam structure, and the water diversion strips 320 are utilized as the reinforcing ribs of the runner cavity 230, so that the structural strength of the liquid cooling plate 200 can be enhanced, the runner plate 220 is more stable and is not easy to deform, the bending resistance and torsion resistance of the runner plate 220 can be enhanced, the load can be uniformly distributed on the runner plate 220, the stress concentration is avoided, the flatness of the runner plate 220 is ensured, and the liquid cooling plate 200 is prevented from deforming.
Specifically, referring to fig. 2 and 5, the liquid cooling plate 200 further includes: the liquid inlet 250, the liquid outlet 260 and a set of parallel module mounting beams 270, the liquid inlet 250 is fixed on the flat plate 210 and is communicated with the first flow channel 231, the liquid outlet 260 is fixed on the flat plate 210 and is communicated with the fourth flow channel 234, the liquid inlet 250 and the liquid outlet 260 are positioned on the same side of the flat plate 210, and the module mounting beams 270 are connected to one side of the flat plate 210 far away from the flow channel plate 220.
Referring to fig. 4, in the present embodiment, the liquid inlet 250 is communicated with the first flow channel 231, the liquid outlet 260 is communicated with the fourth flow channel 234, and the liquid inlet 250 and the liquid outlet 260 are located on the same side of the flat plate 210, so that the structure is compact, and the installation of the liquid cooling plate 200 can be facilitated. For example, the first flow channel 231, the second flow channel 232, the third flow channel 233 and the fourth flow channel 234 are communicated to form an S-shaped flow channel cavity, the first flow channel 231 can be communicated with the liquid inlet 250 through the first connecting groove 223, the fourth flow channel 234 can be communicated with the liquid outlet 260 through the second connecting groove 224, and the first flow channel 231 is communicated with the fourth flow channel 234 through the fifth flow channel 235, so that the structure is compact, the uniformity of cooling liquid in each flow channel can be ensured, the heat dissipation balance of the liquid cooling plate 200 is improved, the flow channel design is reasonable, the stamping is convenient, and the realization is easy.
Specifically, the tray assembly 100 further includes: the box frame 120, the box frame 120 is connected with the bottom guard plate 110 to form a box structure, and the box structure is used for accommodating the liquid cooling plate 200.
The case frame 120 includes: the first cross beam 121, the first longitudinal beam 122, the second cross beam 123 and the second longitudinal beam 124 are sequentially closed and connected with the first cross beam 121, the first longitudinal beam 122, the second cross beam 123 and the second longitudinal beam 124.
In this embodiment, referring to fig. 1, the tray assembly 100 further includes: the case frame 120, i.e., the tray assembly 100, may include the case frame 120 and the bottom guard 110 connected to the case frame 120, wherein the bottom guard 110 may be connected to the case frame 120 by welding.
The case frame 120 includes: the first cross beam 121, the first longitudinal beam 122, the second cross beam 123 and the second longitudinal beam 124 are sequentially connected in a closed mode to form a rectangular frame, the bottom guard plate 110 can be connected with the bottoms of the first cross beam 121, the first longitudinal beam 122, the second cross beam 123 and the second longitudinal beam 124 through welding, the liquid cooling plate 200 is arranged in the box frame 120, the liquid cooling plate 200 and the bottom guard plate 110 can be connected through a three-dimensional net-shaped structure 400 (such as a honeycomb core plate 410 or a fin 310), for example, the lower side of the three-dimensional net-shaped structure 400 is connected with the bottom guard plate 110 through welding, the upper side of the three-dimensional net-shaped structure 400 is connected with the runner plate 220 through welding, the flow guide supporting layer 300 is arranged in the runner cavity 230 of the runner plate 220 and connected with the runner plate 220 through welding, the lower side of the flow guide supporting layer 300 can be connected with the flat plate 220 through welding, the upper side of the flow guide supporting layer 300 can be connected with the flat plate 210 through welding to form a double-layer supporting structure, the bearing performance of the liquid cooling plate 200 is enhanced, the liquid cooling plate 200 is prevented from deforming, and the heat dissipation effect of the liquid cooling plate 200 on a battery is improved.
Specifically, referring to fig. 2 and 6, the first cross member 121, the second cross member 123, the first side member 122, and the second side member 124 may be provided as the burring structure 120a, or the first cross member 121, the second cross member 123, the first side member 122, and the second side member 124 may be provided as the plane structure 120b.
Alternatively, the first beam 121 may include a first turn-up beam and the second beam 123 may include a second turn-up beam; or the first beam 121 may comprise a first planar beam and the second beam 123 may comprise a second planar beam.
Alternatively, the first stringers 122 may comprise first flanged stringers and the second stringers 124 may comprise second flanged stringers; or the first cross member 121 may comprise a first planar longitudinal member and the second cross member 123 may comprise a second planar longitudinal member.
Example 1
Referring to fig. 2, a high-strength lightweight liquid-cooled battery box includes: the tray assembly 100, the liquid cooling plate 200 arranged in the tray assembly 100, the fins 310 positioned in the runner cavity 230 and the fins 310 positioned in the interlayer space 240, the tray assembly 100 comprises the bottom guard plate 110, the liquid cooling plate 200 comprises a flat plate 210 and a runner plate 220, one side of the runner plate 220 is matched and connected with the flat plate 210 to form the runner cavity 230, the other side of the runner plate 220 and the bottom guard plate 110 form an interlayer space, the fins 310 in the runner cavity 230 are connected with the runner plate 220 and the flat plate 210, the fins 310 in the interlayer space 240 are connected with the runner plate 220 and the bottom guard plate 110, so that the runner plate 220, the flat plate 210 and the bottom guard plate 110 form a double-layer fin supporting structure for enhancing the bearing performance of the liquid cooling plate 200, preventing the liquid cooling plate 200 from deforming and improving the heat dissipation effect of the liquid cooling plate 200 on a battery.
Example 2
Referring to fig. 6, a high-strength lightweight liquid-cooled battery box includes: the tray assembly 100, the liquid cooling plate 200 arranged in the tray assembly 100, the water diversion strips 320 arranged in the runner cavity 230 and the fins 310 arranged in the interlayer space 240, the tray assembly 100 comprises the bottom guard plate 110, the liquid cooling plate 200 comprises a flat plate 210 and the runner plate 220, one side of the runner plate 220 is matched and connected with the flat plate 210 to form the runner cavity 230, the other side of the runner plate 220 and the bottom guard plate 110 form an interlayer space, the water diversion strips 320 in the runner cavity 230 are connected with the runner plate 220 and the flat plate 210, the fins 310 in the interlayer space 240 are connected with the runner plate 220 and the bottom guard plate 110, so that the runner plate 220, the flat plate 210 and the bottom guard plate 110 form a double-layer supporting structure for enhancing the bearing performance of the liquid cooling plate 200, preventing the liquid cooling plate 200 from deforming and improving the heat dissipation effect of the liquid cooling plate 200 on a battery.
Example 3
Referring to fig. 3, a high-strength lightweight liquid-cooled battery box includes: the tray assembly 100, the liquid cooling plate 200 arranged in the tray assembly 100, the water diversion strips 320 arranged in the runner cavity 230 and the honeycomb core plate 410 arranged in the interlayer space 240, wherein the tray assembly 100 comprises the bottom guard plate 110, the liquid cooling plate 200 comprises a flat plate 210 and the runner plate 220, one side of the runner plate 220 is matched and connected with the flat plate 210 to form the runner cavity 230, the other side of the runner plate 220 and the bottom guard plate 110 form an interlayer space, the water diversion strips 320 in the runner cavity 230 are connected with the runner plate 220 and the flat plate 210, the honeycomb core plate 410 in the interlayer space 240 is connected with the runner plate 220 and the bottom guard plate 110, so that the runner plate 220, the flat plate 210 and the bottom guard plate 110 form a double-layer supporting structure for enhancing the bearing performance of the liquid cooling plate 200, preventing the liquid cooling plate 200 from deforming and improving the heat dissipation effect of the liquid cooling plate 200 on a battery.
Example 4
Referring to fig. 7, a high-strength lightweight liquid-cooled battery box includes: the tray assembly 100, the liquid cooling plate 200 arranged in the tray assembly 100, the fins 310 positioned in the runner cavity 230 and the honeycomb core plate 410 positioned in the interlayer space 240, wherein the tray assembly 100 comprises the bottom guard plate 110, the liquid cooling plate 200 comprises a flat plate 210 and the runner plate 220, one side of the runner plate 220 is matched and connected with the flat plate 210 to form the runner cavity 230, the other side of the runner plate 220 and the bottom guard plate 110 form an interlayer space, the fins 310 in the runner cavity 230 are connected with the runner plate 220 and the flat plate 210, the honeycomb core plate 410 in the interlayer space 240 is connected with the runner plate 220 and the bottom guard plate 110, so that the runner plate 220, the flat plate 210 and the bottom guard plate 110 form a double-layer net-shaped supporting structure for enhancing the bearing performance of the liquid cooling plate 200, preventing the liquid cooling plate 200 from deforming and improving the heat dissipation effect of the liquid cooling plate 200 on a battery.
The application also provides a battery pack, wherein the battery pack comprises the high-strength lightweight liquid-cooled battery box body, so that the battery pack can have all the characteristics and effects of the high-strength lightweight liquid-cooled battery box body and is not repeated.
In summary, the application discloses a high-strength lightweight liquid-cooled battery box and a battery pack, wherein the high-strength lightweight liquid-cooled battery box comprises: the tray assembly comprises a bottom guard plate, the liquid cooling plate is arranged in the tray assembly, a flow guide supporting layer is arranged in a flow channel cavity and a three-dimensional net-shaped structural body is arranged in an interlayer space, the liquid cooling plate comprises a flat plate and a flow channel plate, one side of the flow channel plate is matched and connected with the flat plate to form the flow channel cavity, the other side of the flow channel plate and the bottom guard plate form an interlayer space, the flow guide supporting layer is connected to the flow channel plate and the flat plate, and the three-dimensional net-shaped structural body is connected to the flow channel plate and the bottom guard plate so that the flow channel plate, the flat plate and the bottom guard plate form a double-layer supporting structure. According to the application, the flow channel plate is connected with the flat plate through the flow guide supporting layer and is connected with the bottom guard plate through the three-dimensional net-shaped structure, on one hand, the flow guide supporting layer can improve the flow resistance in the flow channel cavity, so that the flow velocity of the flow channel cavity is reduced, the heat exchange efficiency of fluid and a heat source is improved, and on the other hand, the flow guide supporting layer and the three-dimensional net-shaped structure form a double-layer supporting structure, so that the bearing performance of the liquid cooling plate is enhanced, the deformation of the liquid cooling plate is prevented, and the heat dissipation effect of the liquid cooling plate on a battery is improved.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (10)

1. The utility model provides a high-strength lightweight liquid cooling battery box which characterized in that includes:
a tray assembly including a bottom shield;
the liquid cooling plate is arranged in the tray assembly and comprises a flat plate and a runner plate, one side of the runner plate is connected with the flat plate in a matched manner to form a runner cavity, and the other side of the runner plate and the bottom guard plate form an interlayer space;
the flow guide supporting layer is positioned in the flow channel cavity and is connected with the flow channel plate and the flat plate;
the three-dimensional net-shaped structure body is positioned in the interlayer space and connected with the runner plate and the bottom guard plate, so that the runner plate, the flat plate and the bottom guard plate form a double-layer supporting structure.
2. The high-strength lightweight liquid-cooled battery box as claimed in claim 1, wherein one side of the flow-guiding supporting layer is connected with the flat plate by welding, and the other side is connected with the runner plate by welding;
one side of the three-dimensional net-shaped structure body is connected with the runner plate through welding, and the other side of the three-dimensional net-shaped structure body is connected with the bottom guard plate through welding.
3. The high strength lightweight liquid cooled battery box of claim 1, wherein the flow directing support layer comprises one of the following structures:
fins and water dividing strips.
4. The high strength lightweight liquid cooled battery box of claim 1, wherein the three-dimensional mesh structure comprises one of the following:
honeycomb core plate and fin.
5. The high-strength lightweight liquid-cooled battery box as claimed in claim 1, wherein the flow channel plate has a groove and a rib part arranged in the groove, the groove and the rib part form a first flow channel, a second flow channel, a third flow channel, a fourth flow channel and a fifth flow channel, the first flow channel, the second flow channel, the third flow channel and the fourth flow channel are sequentially communicated to form an S-shaped flow channel cavity, and the first flow channel is communicated with the fourth flow channel through the fifth flow channel;
the first flow channel, the second flow channel, the third flow channel and the fourth flow channel are internally provided with the diversion supporting layer.
6. The high strength lightweight liquid cooled battery box of claim 5, wherein the flow directing support layer comprises: a first support fin, a second support fin, a third support fin and a fourth support fin,
the first support fins are positioned in the first runner and connected with the runner plate and the flat plate;
the second supporting fins are positioned in the second flow channel and connected with the flow channel plate and the flat plate;
the third supporting fins are positioned in the third runner and connected with the runner plate and the flat plate;
the fourth supporting fin is located in the fourth runner and connected to the runner plate and the flat plate.
7. The high strength lightweight liquid cooled battery box of claim 5, wherein the flow directing support layer comprises: a set of two parallel water splitting bars, the set of water splitting bars comprising: a first water diversion strip group, a second water diversion strip group, a third water diversion strip group and a fourth water diversion strip group,
the first water diversion strip group is positioned in the first runner and connected with the runner plate and the flat plate;
the second water diversion strip group is positioned in the second flow channel and is connected with the flow channel plate and the flat plate;
the third water diversion strip group is positioned in the third flow channel and is connected with the flow channel plate and the flat plate;
the fourth water diversion strip group is positioned in the fourth flow channel and is connected with the flow channel plate and the flat plate.
8. The high strength lightweight liquid cooled battery box of claim 5, wherein the liquid cooled panel further comprises:
the liquid inlet is fixed on the flat plate and is communicated with the first flow channel;
the liquid outlet is fixed on the flat plate and communicated with the fourth flow channel, and the liquid inlet and the liquid outlet are positioned on the same side of the flat plate;
and the module mounting beams are connected to one side of the flat plate, which is far away from the flow channel plate.
9. The high strength lightweight liquid cooled battery box of claim 1, wherein the tray assembly further comprises: the box body frame is connected with the bottom guard plate to form a box body structure which is used for accommodating the liquid cooling plate,
the case frame includes: the device comprises a first cross beam, a first longitudinal beam, a second cross beam and a second longitudinal beam, wherein the first cross beam, the first longitudinal beam, the second cross beam and the second longitudinal beam are sequentially connected in a closed mode.
10. A battery pack comprising the high strength lightweight liquid cooled battery box of any one of claims 1-9.
CN202311191263.0A 2023-09-14 2023-09-14 High-strength light-weight liquid-cooled battery box and battery pack Pending CN117117416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311191263.0A CN117117416A (en) 2023-09-14 2023-09-14 High-strength light-weight liquid-cooled battery box and battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311191263.0A CN117117416A (en) 2023-09-14 2023-09-14 High-strength light-weight liquid-cooled battery box and battery pack

Publications (1)

Publication Number Publication Date
CN117117416A true CN117117416A (en) 2023-11-24

Family

ID=88802174

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311191263.0A Pending CN117117416A (en) 2023-09-14 2023-09-14 High-strength light-weight liquid-cooled battery box and battery pack

Country Status (1)

Country Link
CN (1) CN117117416A (en)

Similar Documents

Publication Publication Date Title
CN110994068A (en) Integrated power battery cooling structure and power battery
CN213483828U (en) Liquid cooling plate, battery liquid cooling system and vehicle with battery liquid cooling system
CN111416084A (en) Cool pipeline of winding type liquid and no modular structure battery package
US9863302B2 (en) Cooling device for under-floor device for vehicle
CN114094225A (en) Battery liquid cooling system and vehicle with same
CN213483829U (en) Liquid cooling plate, battery liquid cooling system and vehicle with battery liquid cooling system
CN111564589A (en) Battery pack
EP3678883A1 (en) An electric vehicle, chassis and a vehicle cooling assembly
CN117117416A (en) High-strength light-weight liquid-cooled battery box and battery pack
CN111816952A (en) Integrated packaging structure, battery pack and integrated forming process
CN213891586U (en) Composite board and battery case
CN215816024U (en) Liquid cooling board and battery package
CN216529038U (en) Liquid cooling board, battery package tray and have its battery package
CN221057526U (en) Honeycomb liquid cooling battery box and battery package
CN212625767U (en) Integrated packaging structure and integrated battery pack
CN221057528U (en) Stamping type large-size liquid cooling plate
CN220065787U (en) CTP structure of liquid cooling battery package
CN218548580U (en) Trilateral refrigerated battery package box structure
CN218472076U (en) Liquid cooling plate, battery module and battery pack
CN220895612U (en) Submerged battery system
CN212064697U (en) Novel liquid cooling machine case
CN218005007U (en) Battery pack liquid cooling heat abstractor and vehicle
CN206959635U (en) A kind of pure electronic micro-surface vehicle copper radiator
CN219067057U (en) Battery module lower box and battery module
CN218215447U (en) Electric cabinet frame

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination