CN217035784U

CN217035784U - Battery case temperature-uniforming plate structure

Info

Publication number: CN217035784U
Application number: CN202220726559.2U
Authority: CN
Inventors: 徐红宝; 周赛洪; 熊孝鹏; 陈刚
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-07-22
Anticipated expiration: 2032-03-30

Abstract

The utility model provides a battery box temperature equalization plate structure, and belongs to the technical field of new energy equipment. This battery case temperature-uniforming plate structure includes temperature-uniforming plate subassembly and business turn over water subassembly. The temperature equalizing plate assembly comprises an upper plate body and a lower plate body which are arranged in parallel at intervals, and a strip-shaped partition plate and a plurality of U-shaped flow channels are arranged between the upper plate body and the lower plate body. The water inlet and outlet assembly is arranged on the side of the temperature equalizing plate assembly and comprises a water inlet main pipe and a water outlet main pipe, the water inlet main pipe comprises a first pipe section, a second pipe section and a first three-way pipe, and the water outlet main pipe comprises a third pipe section, a fourth pipe section and a second three-way pipe. The flow resistance of cooling water can be effectively reduced by the flow channel setting form of the battery box temperature equalizing plate structure, the positive and negative bidirectional flow of cooling water in adjacent flow channels is realized, and the uniformity and the reliability of heat dissipation and cooling of battery modules in the battery box are guaranteed.

Description

Battery case temperature-uniforming plate structure

Technical Field

The utility model relates to the technical field of new energy equipment, in particular to a battery box temperature equalization plate structure.

Background

With the development of new energy technology, energy storage equipment and application are increasingly wide, the energy storage performance of a new energy battery is higher and higher, the temperature rise of the battery is overhigh due to high-rate charging and discharging in the using process, the performance, the service life and the like of the battery are influenced, and if the temperature rise cannot be effectively treated, even thermal runaway can be caused, so that the life safety of a user is endangered. Therefore, a heat dissipation and cooling design is also required to be made in the battery box for storing the new energy battery so as to prolong the service life of the battery module.

In the related art, a liquid cooling plate or a liquid cooling box structure is usually arranged between the sides or gaps of a plurality of modules of a battery box, a cooling water heat exchange pipe is usually arranged in the liquid cooling plate or the liquid cooling box structure in an integrated manner, the liquid cooling plate or the liquid cooling box structure is connected with a water supply mechanism such as a cooling water tank in an electric terminal of a new energy automobile and the like, and heat exchange is carried out on the battery module which generates heat through the flowing of cooling water, so that heat dissipation and temperature reduction are realized.

By adopting the heat dissipation and cooling design in the related technology, the bent turning part of the cooling water heat exchange tube in the liquid cooling pipeline is more, so that the flow resistance of the cooling water in the flowing process is larger, the whole stroke from the water inlet to the cooling heat exchange tube to the water outlet of the cooling water is longer, and the flow speed of the cooling water and the flow uniformity of the cooling water passing through the battery module can not be ensured. And set up the booster pump specially for this reason and improve the velocity of flow and again can lead to whole cost to improve, be difficult to accomplish flow, flow resistance and temperature uniformity can't compromise, lead to the heat dissipation cooling performance lower.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a temperature equalizing plate structure of a battery box, wherein the flow channel arrangement form can effectively reduce the flow resistance of cooling water, and meanwhile, the cooling water in adjacent flow channels can flow in a positive and negative two-way manner, so that the uniformity and the reliability of heat dissipation and cooling of battery modules in the battery box are ensured. The technical scheme is as follows:

the embodiment of the utility model provides a temperature equalizing plate structure of a battery box, which comprises:

the temperature equalizing plate assembly comprises an upper plate body and a lower plate body which are arranged at intervals in parallel, a strip-shaped partition plate and a plurality of U-shaped runners are arranged between the upper plate body and the lower plate body, the circular arc diameters of the circular arc bending sections of the U-shaped runners are gradually increased and are arranged in a stacked and parallel manner, each U-shaped runner is provided with a water inlet end and a water outlet end which are symmetrically arranged relative to the strip-shaped partition plate, the water inlet ends and the water outlet ends of the U-shaped runners are closed, the water inlet ends and the water outlet ends of the U-shaped runners are in the same orientation, the water outlet ends and the water inlet ends of the adjacent two U-shaped runners are close to each other and are arranged at intervals in sequence, a plurality of first water inlets and a plurality of first water outlets are arranged on the upper plate body at intervals, and the plurality of first water inlets are communicated with the water inlet ends of the U-shaped runners positioned on one side of the strip-shaped partition plate in a one-to-one correspondence manner, the first water outlets are communicated with the water outlet ends of the U-shaped flow channels positioned on the other side of the strip-shaped partition plate in a one-to-one correspondence manner; a plurality of second water inlets and a plurality of second water outlets are arranged on the lower plate body at intervals, the plurality of second water inlets are communicated with the water inlet ends of the plurality of U-shaped flow channels positioned on the other side of the strip-shaped partition plate in a one-to-one correspondence manner, the plurality of second water outlets are communicated with the water outlet ends of the plurality of U-shaped flow channels positioned on one side of the strip-shaped partition plate in a one-to-one correspondence manner,

the water inlet and outlet assembly is arranged beside the uniform temperature plate assembly and comprises a water inlet main pipe and a water outlet main pipe, the water inlet main pipe comprises a first pipe section, a second pipe section and a first three-way pipe, the water outlet main pipe comprises a third pipe section, a fourth pipe section and a second three-way pipe, the first pipe section and the third pipe section are positioned on one side of the strip-shaped partition plate and are parallelly arranged on two sides of the uniform temperature plate assembly at intervals, the first pipe section is connected with the first water inlets in a one-to-one correspondence manner through a plurality of first water inlet branch pipes, and the third pipe section is connected with the second water outlets in a one-to-one correspondence manner through a plurality of first water outlet branch pipes; the second pipe section and the fourth pipe section are positioned on the other side of the strip-shaped partition plate and are parallelly arranged on two sides of the temperature equalizing plate assembly at intervals, the second pipe section is connected with the second water inlets in a one-to-one correspondence mode through a plurality of second water inlet branch pipes, the fourth pipe section is connected with the first water outlets in a one-to-one correspondence mode through a plurality of second water outlet branch pipes, the first pipe section and the second pipe section are connected through the first three-way pipe, two ends of the first three-way pipe are sealed, a water inlet main port is formed in the first three-way pipe, the third pipe section and the fourth pipe section are connected through the second three-way pipe, two ends of the third pipe section and the fourth pipe section are sealed, and a water outlet main port is formed in the second three-way pipe.

Optionally, the first water inlet branch pipe and the first water inlet, the first water outlet branch pipe and the second water outlet, the second water inlet branch pipe and the second water inlet, and the second water outlet branch pipe and the first water outlet are all connected by welding.

Optionally, the temperature-uniforming plate assembly further comprises a middle plate, a plurality of U-shaped grooves are stamped on two side plate surfaces of the middle plate, the arc diameters of the arc bending sections of the U-shaped grooves are gradually increased and are arranged in a stacked and parallel manner, the middle plate is fixedly connected between the upper plate body and the lower plate body, and the groove walls of the U-shaped grooves and the plate surfaces of the upper plate body and the lower plate body jointly define the U-shaped flow channels.

Optionally, the cross-sectional shapes and the cross-sectional areas of the plurality of U-shaped flow channels are the same.

Optionally, the cross-sectional shapes of the plurality of U-shaped flow channels are isosceles trapezoids.

Optionally, the upper plate body, the middle plate and the lower plate body are connected by brazing.

Optionally, the upper plate body, the middle plate, the lower plate body, the water inlet main pipe and the water outlet main pipe are all made of stainless steel.

Optionally, the outer sides of the water inlet main pipe and the water outlet main pipe are both sleeved with insulating layers.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:

a plurality of U type runners that supply cooling water to flow in this battery case samming plate structure are evenly arranged side by side along the horizontal direction at the during operation, and its arrangement that is harmonica tubular can improve the cooling water and bear the weight of the area of contact between the battery module, guarantees heat exchange efficiency. And only has one arc-shaped turning part in the flowing process, so that the flowing resistance of the cooling water can be effectively reduced. And through ingenious water inlet and outlet end arrangement, the cooling water in two adjacent U-shaped flow channels flows in opposite directions, so that bidirectional flow of the cooling water in the positive and negative directions is realized, the integral temperature uniformity of the structure of the temperature-uniforming plate is effectively improved, and the uniformity and the reliability of heat dissipation and cooling of the battery module in the battery box are ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic top view of a temperature equalization plate structure of a battery box according to an embodiment of the present invention;

fig. 2 is an exploded view of a structure of a temperature equalization plate structure of a battery box according to an embodiment of the present invention;

fig. 3 is a schematic internal bottom view of a temperature equalization plate structure of a battery case according to an embodiment of the present invention;

fig. 4 is a partial perspective view illustrating a temperature equalization plate structure of a battery box according to an embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the related art, a liquid cooling plate or a liquid cooling box structure is usually arranged between the sides or gaps of a plurality of modules of a battery box, a cooling water heat exchange pipe is usually arranged in the liquid cooling plate or the liquid cooling box structure in an integrated mode, the liquid cooling plate or the liquid cooling box structure is connected with a water supply mechanism such as a cooling water tank in an electricity utilization terminal such as a new energy automobile, heat exchange is carried out between the cooling water and a heating battery module through the flowing of cooling water, and heat dissipation and cooling are achieved.

By adopting the heat dissipation and cooling design in the related technology, the bent turning part of the cooling water heat exchange tube in the liquid cooling pipeline is more, so that the flow resistance of the cooling water in the flowing process is larger, the whole stroke from the water inlet to the cooling heat exchange tube to the water outlet is longer, and the flow speed of the cooling water and the flow uniformity of the cooling water passing through the battery module can not be ensured. And set up the booster pump for this purpose specially and improve the velocity of flow and again can lead to whole cost to improve, be difficult to accomplish flow, flow resistance and temperature uniformity's compromise, lead to the heat dissipation cooling performance lower.

Fig. 1 is a schematic top view of a temperature equalization plate structure of a battery box according to an embodiment of the present invention. Fig. 2 is an exploded view of a structure of a temperature equalization plate structure of a battery box according to an embodiment of the present invention. Fig. 3 is a schematic view of an internal bottom structure of a temperature equalizing plate structure of a battery box according to an embodiment of the utility model. Fig. 4 is a partial perspective view illustrating a temperature equalization plate structure of a battery box according to an embodiment of the present invention. As shown in fig. 1 to 4, by practice, the applicant provides a battery box temperature equalization plate structure comprising a temperature equalization plate component 1 and a water inlet and outlet component 2.

The temperature equalization plate assembly 1 comprises an upper plate body 11 and a lower plate body 12 which are arranged in parallel at intervals. Be provided with bar baffle 13 and a plurality of U type runner 1a between last plate body 11 and the lower plate body 12, the circular arc diameter of the circular arc bending section of a plurality of U type runners 1a crescent and range upon range of parallel arrangement, every U type runner 1a all has for bar baffle 13 symmetrical arrangement intake end and play water end, the tip of intake end and play water end is sealed. The water inlet ends and the water outlet ends of the U-shaped runners 1a are consistent in orientation, and the water outlet ends and the water inlet ends of the two adjacent U-shaped runners 1a are adjacent and are sequentially arranged at intervals. A plurality of first water inlets 111 and a plurality of first water outlets 112 are arranged on the upper plate body 11 at intervals, the plurality of first water inlets 111 are communicated with the water inlet ends of the plurality of U-shaped flow channels 1a on one side of the strip-shaped partition plate 13 in a one-to-one correspondence manner, and the plurality of first water outlets 112 are communicated with the water outlet ends of the plurality of U-shaped flow channels 1a on the other side of the strip-shaped partition plate 13 in a one-to-one correspondence manner. A plurality of second water inlets 121 and a plurality of second water outlets 122 are arranged on the lower plate body 12 at intervals, the plurality of second water inlets 121 are communicated with the water inlet ends of the plurality of U-shaped runners 1a on the other side of the strip-shaped partition plate 13 in a one-to-one correspondence manner, and the plurality of second water outlets 122 are communicated with the water outlet ends of the plurality of U-shaped runners 1a on one side of the strip-shaped partition plate 13 in a one-to-one correspondence manner.

The water inlet and outlet component 2 is arranged at the side of the temperature equalizing plate component 1, and the water inlet and outlet component 2 comprises a water inlet main pipe 21 and a water outlet main pipe 22. The main water inlet pipe 21 comprises a first pipe section 211, a second pipe section 212 and a first three-way pipe 213, and the main water outlet pipe 22 comprises a third pipe section 221, a fourth pipe section 222 and a second three-way pipe 223. The first pipe section 211 and the third pipe section 221 are located on one side of the strip-shaped partition plate 13 and are arranged on two sides of the temperature equalizing plate assembly 1 at intervals in parallel, the first pipe section 211 is connected with the first water inlets 111 through the first water inlet branch pipes 2111 in a one-to-one correspondence manner, and the third pipe section 221 is connected with the second water outlets 122 through the first water outlet branch pipes 2211 in a one-to-one correspondence manner. The second pipe section 212 and the fourth pipe section 222 are located on the other side of the strip-shaped partition plate 13 and are arranged on two sides of the uniform temperature plate assembly 1 at intervals in parallel, the second pipe section 212 is connected with the plurality of second water inlets 121 through the plurality of second water inlet branch pipes 2121 in a one-to-one correspondence manner, and the fourth pipe section 222 is connected with the plurality of first water outlets 112 through the plurality of second water outlet branch pipes 2221 in a one-to-one correspondence manner. The first pipe section 211 and the second pipe section 212 are connected through a first three-way pipe 213, two ends of the first three-way pipe 213 are sealed, a main water inlet port 2131 is arranged on the first three-way pipe 213, the third pipe section 221 and the fourth pipe section 222 are connected through a second three-way pipe 223, two ends of the third pipe section 221 and the fourth pipe section 222 are sealed, and a main water outlet port 2231 is arranged on the second three-way pipe 223.

In the embodiment of the utility model, when the new energy battery box is assembled, the temperature equalizing plate assembly 1 of the temperature equalizing plate structure of the battery box can be arranged at the bottom of the battery box, and the upper plate body 11 is utilized to carry out bearing and installation on the battery module in the battery box. The water inlet and outlet assembly 2 can be connected with a cooling water circulation structure, such as a water tank, disposed in the electric terminal through the water inlet main port 2131 and the water outlet main port 2231. When the battery module works, cooling water can enter the water inlet main pipe 21 from the water inlet main port and is sequentially branched into the first pipe section 211 and the second pipe section 212 through two ends of the first three-way pipe 213.

The cooling water introduced into the first pipe section 211 is introduced through the plurality of first water inlet branch pipes 2111 via the plurality of first water inlet ports 111 into the water inlet ends of the plurality of U-shaped flow paths 1a located on the side of the strip partition 13 in the horizontal direction, respectively. After the heat of the battery modules on the upper plate body 11 flows downwards under the guide of the plurality of U-shaped flow channels 1a and reaches the water outlet end on the other side of the strip-shaped partition plate 13, the high-temperature cooling water subjected to heat exchange finally enters the fourth pipe section 222 on the other side of the strip-shaped partition plate 13 in the horizontal direction through the plurality of second water outlet branch pipes 2221 via the first water outlet 112 and is discharged through the main water outlet port 2231 on the second three-way pipe 223 to complete the heat exchange cycle; and the cooling water introduced into the second pipe section 212 is introduced into the water inlet ends of the plurality of U-shaped flow paths 1a located at the other side of the strip partition 13 in the horizontal direction through the plurality of second water inlet branch pipes 2121 via the plurality of second water inlet ports 121, respectively. After passing through the direction of the U-shaped flow channels 1a, exchanging heat with the battery modules on the upper plate 11 and coming to the water outlet end on one side of the strip partition 13, the high-temperature cooling water after heat exchange finally enters the third pipe section 221 on one side of the strip partition 13 in the horizontal direction through the first water outlet branch pipes 2211 via the second water outlet 122, and is discharged via the main water outlet port 2231 on the second three-way pipe 223, so as to complete the heat exchange cycle.

A plurality of U-shaped runners 1a for cooling water to flow in the structure of the battery and the temperature equalizing plate are uniformly arranged in parallel along the horizontal direction during working, the arrangement mode of the U-shaped runners is a harmonica tube type, the contact area between the cooling water and the bearing battery module can be increased, and the heat exchange efficiency is ensured. And only has one turning part in the shape of an arc in the flowing process, so that the flowing resistance of the cooling water can be effectively reduced. And through ingenious water inlet and outlet end arrangement, the cooling water in the two adjacent U-shaped flow channels 1a flows in opposite directions and staggered, so that the bidirectional flow of the cooling water in the positive and negative directions is realized, the integral temperature uniformity of the structure of the temperature-uniforming plate is effectively improved, and the uniformity and the reliability of heat dissipation and cooling of the battery modules in the battery box are ensured.

It should be emphasized that, in the embodiment of the present invention, the first pipe segment 211 and the third pipe segment 221 are located on one side of the strip-shaped partition plate 13 and are symmetrically arranged with respect to the vapor chamber plate assembly 1; the second pipe section 212 and the fourth pipe section 222 are positioned at the other side of the strip-shaped partition plate 13 and are symmetrically arranged relative to the temperature equalization plate assembly 1. The pipe of the first tee 213 for connecting the first pipe section 211 and the second pipe section 212 and the pipe of the second tee 223 for connecting the third pipe section 221 and the fourth pipe section 222 are arranged crosswise in an "X" shape as a whole. The arrangement mode of the U-shaped runners 1a in the whole flow direction is sequentially staggered, so that the first water inlet branch pipes 2111 and the first water outlet branch pipes 2211 are connected and communicated with the temperature equalization plate assembly 1 through two sides, meanwhile, the spacing between the second water inlet branch pipes 2121 and the second water outlet branch pipes 2221 in the horizontal direction can be kept quite wide, the width distance of one U-shaped runner 1a can be kept between two adjacent pipelines on the same side, and fixed connection processing and subsequent overhaul and maintenance are facilitated.

Optionally, the first branch inlet 2111 and the first inlet 111, the first branch outlet 2211 and the second outlet 122, the second branch inlet 2121 and the second inlet 121, and the second branch outlet 2221 and the first outlet 112 are connected by welding. Exemplarily, in the embodiment of the utility model, the pipeline structure connection between the temperature-equalizing plate assembly 1 and the water inlet and outlet assembly 2 is carried out by adopting a welding connection mode, the process is simple, the connection strength is high, the liquid leakage phenomenon in the operation process is avoided, and the service life of the temperature-equalizing plate structure of the battery box can be effectively prolonged.

Optionally, the temperature equalizing plate assembly 1 further includes a middle plate 14, a plurality of U-shaped grooves 141 are stamped on two side plate surfaces of the middle plate 14, the arc diameters of the arc bending sections of the plurality of U-shaped grooves 141 are gradually increased and are stacked and arranged in parallel, the middle plate 14 is fixedly connected between the upper plate body 11 and the lower plate body 12, and a plurality of U-shaped flow channels 1a are defined by the groove walls of the plurality of U-shaped grooves 141 and the plate surfaces of the upper plate body 11 and the lower plate body 12 together. Illustratively, in the embodiment of the present invention, when the temperature-uniforming plate assembly 1 is processed, the upper plate body 11 and the lower plate body 12 are both of a flat plate structure, and a plurality of U-shaped grooves 141 which are U-shaped in overall extending direction and are arranged in parallel are formed on the intermediate plate 14 by stamping, wherein the recessed directions of two adjacent U-shaped grooves 141 are opposite. The upper plate body 11, the intermediate plate 14 and the lower plate body 12 are then laminated and fixedly connected by brazing. The side groove walls of the U-shaped grooves 141 and the plate surfaces of the upper plate body 11 and the lower plate body 12 are attached to each other and jointly define a plurality of U-shaped flow channels 1a between the upper plate body 11 and the lower plate body 12. Adopt integrative stamping forming's U type runner 1a, can effectively increase its structural mechanical strength in extending direction, when reducing manufacturing procedure, further improve the whole life of battery case samming structure.

In the embodiment of the present invention, after the three layers of brazing connection of the upper plate body 11, the middle plate 14 and the lower plate body 12 are completed, the openings of the water inlet ends and the water outlet ends of the plurality of U-shaped flow channels 1a are sealed, and the sealing manner is not limited in the present invention.

Alternatively, the cross-sectional shapes and cross-sectional areas of the plurality of U-shaped flow paths 1a are the same. Exemplarily, in the embodiment of the present invention, the cross sections of the U-shaped flow channels 1a are all isosceles trapezoid structures with the same cross-sectional area. The cooling water entering each U-shaped flow channel 1a can be ensured to have the same or similar flow velocity, so that the integral heat dissipation uniformity is ensured. And compared with a square or rectangular structure with the cross section of an isosceles trapezoid, the isosceles trapezoid has the advantages that the stamping die with the same structure can be used for direct stamping forming conveniently in the stamping process of the intermediate plate 14, external trimming or angle adjustment is not needed, and the processing efficiency is further improved.

Optionally, the upper plate body 11, the middle plate 14, the lower plate body 12, the water inlet main pipe 21 and the water outlet main pipe 22 are all made of stainless steel. The upper plate body 11, the middle plate 14, the lower plate body 12, the water inlet main pipe 21 and the water outlet main pipe 22 are all made of high-quality 6-series aluminum alloy produced by a heat treatment pre-stretching process, the 6-series aluminum alloy has good formability, weldability and machinability, and meanwhile, the mechanical strength is high, and the practical life is effectively prolonged while the bearing of a new energy battery cell or a module is ensured.

Optionally, the outer sides of the water inlet main pipe 21 and the water outlet main pipe 22 are sleeved with insulating layers. Illustratively, in the embodiment of the present invention, an insulating layer, such as insulating cotton, is sleeved on the outer sides of the water inlet main pipe 21 and the water outlet main pipe 22. Can avoid under extreme weather, the cooling water is being responsible for 21 and goes out the water and be responsible for 22 and business turn over water subassembly 2 through intaking and produce the comdenstion water because of the inside and outside difference in temperature is too big when carrying out cooling cycle, has further improved the security of battery case samming structure.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims of the present application does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The above description is intended to be illustrative of the present invention and should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents.

Claims

1. A battery case temperature equalization plate structure, comprising:

the temperature-equalizing plate component (1) comprises an upper plate body (11) and a lower plate body (12) which are arranged in parallel at intervals, a strip-shaped partition plate (13) and a plurality of U-shaped flow channels (1a) are arranged between the upper plate body (11) and the lower plate body (12), the circular arc diameters of circular arc bending sections of the U-shaped flow channels (1a) are gradually increased and are arranged in a stacked and parallel mode, each U-shaped flow channel (1a) is provided with a water inlet end and a water outlet end which are symmetrically arranged relative to the strip-shaped partition plate (13), the end parts of the water inlet end and the water outlet end are closed, the water inlet ends and the water outlet ends of the U-shaped flow channels (1a) are consistent in orientation, the water outlet ends and the water inlet ends of two adjacent U-shaped flow channels (1a) are close to each other and are arranged at intervals in sequence, a plurality of first water inlets (111) and a plurality of first water outlets (112) are arranged on the upper plate body (11) at intervals, the first water inlets (111) are communicated with the water inlet ends of the U-shaped flow channels (1a) on one side of the strip-shaped partition plate (13) in a one-to-one correspondence manner, and the first water outlets (112) are communicated with the water outlet ends of the U-shaped flow channels (1a) on the other side of the strip-shaped partition plate (13) in a one-to-one correspondence manner; a plurality of second water inlets (121) and a plurality of second water outlets (122) are arranged on the lower plate body (12) at intervals, the plurality of second water inlets (121) are communicated with the water inlet ends of the plurality of U-shaped runners (1a) positioned on the other side of the strip-shaped partition plate (13) in a one-to-one correspondence manner, the plurality of second water outlets (122) are communicated with the water outlet ends of the plurality of U-shaped runners (1a) positioned on one side of the strip-shaped partition plate (13) in a one-to-one correspondence manner,

the water inlet and outlet component (2) is arranged beside the temperature equalizing plate component (1), the water inlet and outlet component (2) comprises a water inlet main pipe (21) and a water outlet main pipe (22), the main water inlet pipe (21) comprises a first pipe section (211), a second pipe section (212) and a first three-way pipe (213), the main water outlet pipe (22) comprises a third pipe section (221), a fourth pipe section (222) and a second three-way pipe (223), the first pipe section (211) and the third pipe section (221) are positioned on one side of the strip-shaped partition plate (13) and are arranged on two sides of the temperature equalizing plate assembly (1) at intervals in parallel, the first pipe section (211) is correspondingly connected with the first water inlets (111) one by one through a plurality of first water inlet branch pipes (2111), the third pipe section (221) is correspondingly connected with the second water outlets (122) one by one through a plurality of first water outlet branch pipes (2211); the second pipe section (212) and the fourth pipe section (222) are positioned on the other side of the strip-shaped partition plate (13) and are arranged on two sides of the temperature-uniforming plate component (1) at intervals in parallel, the second pipe section (212) is correspondingly connected with the second water inlets (121) one by one through a plurality of second water inlet branch pipes (2121), the fourth pipe section (222) is correspondingly connected with the first water outlets (112) one by one through a plurality of second water outlet branch pipes (2221), the first pipe section (211) and the second pipe section (212) are connected through the first tee pipe (213) and are closed at two ends, the first three-way pipe (213) is provided with a main water inlet (2131), the third pipe section (221) and the fourth pipe section (222) are connected through the second three-way pipe (223) and are closed at two ends, and the second three-way pipe (223) is provided with a main water outlet (2231).

2. The battery box temperature equalizing plate structure according to claim 1, wherein the first water inlet branch pipe (2111) and the first water inlet (111), the first water outlet branch pipe (2211) and the second water outlet (122), the second water inlet branch pipe (2121) and the second water inlet (121), and the second water outlet branch pipe (2221) and the first water outlet (112) are all connected by welding.

3. The battery box temperature-equalizing plate structure according to claim 1, wherein the temperature-equalizing plate assembly (1) further comprises a middle plate (14), a plurality of U-shaped grooves (141) are punched on two side plates of the middle plate (14), the arc diameters of the arc bending sections of the U-shaped grooves (141) are gradually increased and are arranged in a stacked and parallel manner, the middle plate (14) is fixedly connected between the upper plate body (11) and the lower plate body (12), and the groove walls of the U-shaped grooves (141) and the plate surfaces of the upper plate body (11) and the lower plate body (12) jointly define the U-shaped flow channels (1 a).

4. The battery case temperature equalization plate structure according to claim 3, wherein the plurality of U-shaped flow channels (1a) have the same cross-sectional shape and cross-sectional area.

5. The battery box temperature-equalizing plate structure according to claim 4, wherein the cross-sectional shapes of the plurality of U-shaped flow channels (1a) are isosceles trapezoids.

6. A battery case temperature equalizing plate structure according to claim 3, wherein said upper plate body (11), said intermediate plate (14) and said lower plate body (12) are connected by brazing.

7. The battery box temperature equalization plate structure according to claim 3, wherein the upper plate body (11), the middle plate body (14), the lower plate body (12), the water inlet main pipe (21) and the water outlet main pipe (22) are all made of stainless steel.

8. The battery box temperature equalizing plate structure according to any one of claims 1 to 7, wherein insulating layers are sleeved on the outer sides of the water inlet main pipe (21) and the water outlet main pipe (22).