CN218472081U

CN218472081U - Liquid cooling subassembly and battery assembly

Info

Publication number: CN218472081U
Application number: CN202222685856.XU
Authority: CN
Inventors: 田远伟; 闫仕伟; 刘华俊
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-02-10
Anticipated expiration: 2032-10-12

Abstract

The utility model belongs to the technical field of the battery, a liquid cooling subassembly and battery assembly are disclosed. The liquid cooling assembly comprises a cold plate, a flange plate, a cooling pipe and a sealing ring, and a flow passage is arranged in the cold plate; the flange plate is arranged below the cold plate in parallel and is used for being fixed on the inner wall of the shell of the battery assembly, and a through hole is formed in the flange plate; one end of the cooling pipe is connected with the back surface of the cold plate, the other end of the cooling pipe penetrates through the through hole to form a connecting end, and the connecting end is used for connecting a pipe joint; the sealing ring is arranged on one side, deviating from the cold plate, of the flange plate, and the sealing ring surrounds the through hole. Compare the fast plug connection among the prior art, the utility model discloses a cooling tube and flange cooperation, the coupling is direct to stretch out the outer one end of casing with the cooling tube and is connected, and the installation space that needs is little, solves current whole car end space undersize, requires too high problem to pipeline installation space.

Description

Liquid cooling subassembly and battery assembly

Technical Field

The utility model relates to a battery technology field especially relates to a liquid cooling subassembly and battery assembly.

Background

At present, a cold plate formed by stamping is arranged in a shell of a battery assembly in the industry, a flow channel is arranged in the cold plate, a male connector is welded on the cold plate, and the male connector is connected with a water inlet and a water outlet of a finished automobile end through a nylon pipeline quick plug. The assembly of this kind of form joint is high to the requirement in space, and the size space of fast plug requires highly, and the number of times of dismouting has the restriction, and is high to the size requirement of male joint, and the connected mode of inserting soon has sealed the risk that loses efficacy and produce the weeping to lead to the battery package to lose efficacy, and the ageing life that the fast plug can not guarantee more than 10 years.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid cooling subassembly and battery assembly can solve current joint assembly and require the manuscript to the space, the dismouting number of times to exist the restriction and lead to life weak point and have the problem of sealed inefficacy risk.

To achieve the purpose, the utility model adopts the following technical proposal:

a liquid cooling assembly comprising:

the cold plate is internally provided with a flow passage;

the flange plate is arranged below the cold plate in parallel and is used for being fixed on the inner wall of the shell of the battery assembly, and a through hole is formed in the flange plate;

one end of the cooling pipe is connected with the back surface of the cold plate, the other end of the cooling pipe penetrates through the through hole to form a connecting end, and the connecting end is used for connecting a pipe joint; and

and the sealing ring is arranged on one side, deviating from the cold plate, of the flange plate and surrounds the through hole.

As an alternative of the above liquid cooling assembly, a plurality of mounting holes are arranged in the flange plate along the circumferential direction, and a fastening member is mounted in each mounting hole and used for being screwed to the housing of the battery assembly.

As an alternative of the above liquid cooling assembly, the cooling tube includes a first vertical section, a horizontal section, and a second vertical section that are connected in sequence, the first vertical section is connected perpendicularly to the cold plate, the horizontal section extends to the cold plate side, and the second vertical section is connected perpendicularly to the flange.

As an alternative of the above liquid cooling assembly, smooth transition is performed between the first vertical section and the horizontal section, and between the horizontal section and the second vertical section.

As an alternative of the above liquid cooling assembly, the sealing ring is sleeved outside the connecting end.

As an alternative of the above liquid cooling assembly, a fluid inlet and a fluid outlet which are communicated with the flow channel are arranged on the bottom surface of the cold plate, and the fluid inlet and the fluid outlet are respectively connected with the cooling pipe.

As an alternative of the above liquid cooling assembly, the fluid inlet and the fluid outlet on the same cold plate are disposed on the same side edge of the cold plate, and are connected to the same flange.

As an alternative of the above liquid cooling assembly, the liquid cooling assembly includes two cold plates arranged at intervals, the flange is arranged between the two cold plates, and the fluid inlet and the fluid outlet on the two cold plates are arranged in a staggered manner.

As an alternative to the above liquid cooling assembly, the sealing ring is a teflon ring.

The battery assembly comprises the liquid cooling component.

The utility model has the advantages that:

in the liquid cooling component provided by the utility model, the pipe joint is positioned at the outer side of the shell, so that the number of joints in the shell can be reduced, and the risk of failure of the battery assembly caused by sealing failure of the pipe joint is reduced; the flange plates are arranged below the cold plate in parallel and are connected through the cooling pipes, the length of each cooling pipe can be set to be shorter, pipelines and related accessories are reduced, and the distance between the cold plate and the flange plates is reduced, so that the occupied space of the liquid cooling assembly is reduced, and the problem of small enveloping space in the conventional battery assembly is solved; compare the fast plug connection among the prior art, the utility model discloses a cooling tube and flange cooperation, the coupling is direct to stretch out the outer one end of casing with the cooling tube and is connected, and the installation space that needs is little, solves current whole car end space undersize, requires too high problem to pipeline installation space.

Drawings

Fig. 1 is a schematic structural diagram of a liquid cooling module provided by the present invention;

fig. 2 is a top view of a portion of the liquid cooling module provided by the present invention;

fig. 3 is a schematic structural diagram i of the assembled liquid cooling pipe and flange provided by the present invention;

fig. 4 is a front view of the liquid cooling pipe and the flange plate provided by the present invention after assembly;

fig. 5 is a schematic structural view ii of the assembled liquid cooling pipe and flange plate of the present invention.

In the figure:

10. a cold plate; 20. a cooling tube; 21. a first vertical section; 231. a connecting end; 22. a horizontal segment; 23. a second vertical section; 30. a flange plate; 40. a fastener; 50. and (5) sealing rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a liquid cooling assembly, which is used in a battery assembly to play a role in cooling a battery cell and avoid thermal runaway of the battery cell caused by overhigh temperature.

As shown in fig. 1, the liquid cooled assembly includes a cold plate 10. A flow channel is arranged in the cold plate 10, and a fluid inlet and a fluid outlet which are communicated with the flow channel are arranged on the cold plate 10, so that a cooling medium in the flow channel circularly flows, and the temperature of the battery cell is better controlled.

In the prior art, a male connector is welded at a position on the cold plate 10 corresponding to the fluid inlet and the fluid outlet, and the male connector is used for being connected with a quick plug so as to communicate a flow channel in the cold plate 10 with a water inlet and outlet pipeline at the end of the whole vehicle. However, in the structure, the male connector and the quick plug are required to be located in the shell of the battery assembly, the assembly of the male connector and the quick plug has high space requirement, the size of the quick plug is large, the installation space is required to be large, the overall size of the battery assembly is increased, and the internal space cannot be reasonably utilized. In addition, there is the dismouting number of times restriction in male joint and quick plug, can not guarantee longer life, appears sealed inefficacy easily and leads to the problem that the battery package became invalid.

To solve the above problem, the liquid cooling module in this embodiment further includes a cooling pipe 20 and a flange 30. The flange plate 30 is arranged below the cold plate 10 in parallel, the flange plate 30 is used for being fixed on the inner wall of the shell of the battery assembly, the through hole fluid outlet and the fluid inlet which are arranged on the flange plate 30 are connected with the cooling pipe 20, one end of the cooling pipe 20 is connected with the back of the cold plate 10, the other end of the cooling pipe passes through the through hole on the flange plate 30 to form a connecting end 231, and the connecting section can be used as a male connector to connect the pipe connector. After the flange 30 is secured to the inner wall of the housing of the battery assembly, the connecting end 231 can extend outside the housing of the battery assembly to connect with the pipe connector.

The arrangement enables the pipe joint to be positioned on the outer side of the shell, the number of the pipe joints in the shell can be reduced, and the risk that the battery assembly fails due to sealing failure of the pipe joint is reduced; the flange plate 30 is arranged below the cold plate 10 in parallel and is connected with the cold plate through the cooling pipe 20, the length of the cooling pipe 20 can be set to be shorter, so that pipelines and related accessories are reduced, the distance between the cold plate 10 and the flange plate 30 is reduced, the occupied space of a liquid cooling assembly is reduced, and the problem that the enveloping space in the conventional battery assembly is small is solved; compare the quick plug connection among the prior art, this embodiment adopts cooling tube 20 and flange 30 cooperation, and the union coupling is direct to be connected with the outer one end of cooling tube 20 stretch out the casing, and the installation space that needs is little, solves current whole car end space undersize, the too high problem of pipeline installation space requirement.

To avoid leakage at the location where the cooling pipe 20 is connected to the flange, the flange 30 is provided with a sealing ring 50 on the side facing away from the cold plate 10. When the flange 30 is fixed to the housing of the battery assembly, the seal ring 50 is clamped between the flange 30 and the housing of the battery assembly to seal the assembly gap between the flange 30 and the housing of the battery assembly, thereby improving the sealing effect of the battery assembly and preventing the leaked liquid from entering the housing.

As shown in fig. 1 and 2, in order to further reduce the occupied space of the liquid cooling module, the cooling pipe 20 is bent such that the cold plate 10 and the flange 30 are offset in the up-down direction to provide an installation space for the cooling pipe 20.

Further, the fluid inlet and the fluid outlet are disposed on the same side edge of the back surface of the cold plate 10, so that the two cooling tubes 20 connected to the cold plate 10 are disposed close to each other, and the two cooling tubes 20 connected to the same cold plate 10 are conveniently connected to the same flange 30, so as to reduce the size of the flange 30, and make the arrangement of the cooling tubes 20 more compact.

Because electric core is more in the battery assembly, the liquid cooling subassembly can be provided with two cold plates 10, and two cold plates 10 interval set up, and fluid inlet and fluid outlet that have gone up on every cold plate 10 are located one side edge that is close to another cold plate 10 of cold plate 10 to the flange that makes two cold plates 10 connect can be located between two cold plates 10, so that the structure of liquid cooling subassembly is compacter. As shown in fig. 2, two cold plates 10 are arranged in a first direction and two flanges are arranged in a second direction, wherein the first direction is perpendicular to the second direction.

In order to stagger the flange 30 and the cold plate 10, as shown in fig. 3 and 4, the cooling tube 20 includes a first vertical section 21, a horizontal section 22 and a second vertical section 23 connected in sequence, the first vertical section 21 is connected to the cold plate 10 vertically, the horizontal section 22 extends to the side of the cold plate 10, and the second vertical section 23 is connected to the flange 30 vertically. In this embodiment, the cooling pipe 20 is bent to make the flange and the connection end 231 more concentrated.

To facilitate the connection of the two cooling tubes 20 to the same flange 30, the horizontal sections 22 of the two cooling tubes 20 connected to the same cold plate 10 may have different lengths and extending directions, so that the two cooling tubes 20 are staggered to avoid the interference between the cooling tubes 20.

Optionally, the first vertical section 21 and the horizontal section 22, and the horizontal section 22 and the second vertical section 23 are rounded to reduce edges and corners on the cooling tube 20, so as to avoid scratching the assembling personnel or damaging other structures in the battery assembly.

Further, the two flanges 30 are disposed closely adjacent to each other, so that the connection ends 231 formed by the plurality of cooling pipes 20 are concentrated, thereby facilitating assembly by an assembler. The fluid inlets and fluid outlets on the two cold plates 10 are offset to avoid interference of the cooling tubes 20.

As shown in fig. 4 and 5, in order to improve the fixing effect of the flange 30 and the housing of the battery assembly, a plurality of mounting holes are arranged on the flange 30 along the circumferential direction, a fastening member 40 is mounted in each mounting hole, and the fastening member 40 is used for being screwed on the housing of the battery assembly. Alternatively, the fastener 40 may be a screw.

In order to improve the sealing effect between the flange plate 30 and the housing, the sealing ring 50 is sleeved outside the connecting end 231 to position the sealing ring 50, so that the sealing failure caused by the dislocation of the sealing ring 50 is avoided.

Further, the sealing ring 50 is a teflon ring. The sealing ring 50 made of the material has long service life, can guarantee the service life of more than ten years on the basis of guaranteeing the sealing effect, and can solve the risk of liquid leakage caused by aging of the sealing ring 50 of the existing quick connector.

The embodiment also provides a battery assembly, and the battery assembly comprises the liquid cooling component.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Liquid cooling subassembly, its characterized in that includes:

the cold plate (10), wherein a flow channel is arranged in the cold plate (10);

the flange plate (30) is arranged below the cold plate (10) in parallel, the flange plate (30) is used for being fixed on the inner wall of a shell of the battery assembly, and a through hole is formed in the flange plate (30);

one end of the cooling pipe (20) is connected with the back surface of the cold plate (10), the other end of the cooling pipe (20) penetrates through the through hole to form a connecting end (231), and the connecting end (231) is used for connecting a pipe joint; and

and the sealing ring (50) is arranged on one side, deviating from the cold plate (10), of the flange plate (30), and the sealing ring (50) surrounds the through hole.

2. The liquid cooling assembly of claim 1, wherein the flange (30) has a plurality of circumferentially arranged mounting holes, each mounting hole having a fastener (40) mounted thereon, the fasteners (40) adapted to be threadably coupled to a housing of the battery assembly.

3. The liquid cooling assembly of claim 1, wherein the cooling tube (20) comprises a first vertical section (21), a horizontal section (22) and a second vertical section (23) connected in sequence, the first vertical section (21) is vertically connected to the cold plate (10), the horizontal section (22) extends laterally of the cold plate (10), and the second vertical section (23) is vertically connected to the flange (30).

4. The liquid cooling assembly of claim 3, wherein the first vertical section (21) is smoothly transitioned to the horizontal section (22) and the horizontal section (22) is smoothly transitioned to the second vertical section (23).

5. A liquid cooling assembly according to any of claims 1-4, wherein the sealing ring (50) is arranged to be sleeved outside the connection end (231).

6. The liquid cooling assembly according to any of the claims 1-4, wherein the bottom surface of the cold plate (10) is provided with a fluid inlet and a fluid outlet communicating with the flow passage, the fluid inlet and the fluid outlet being connected with the cooling pipe (20), respectively.

7. The liquid cooling assembly of claim 6, wherein the fluid inlet and the fluid outlet of the same cold plate (10) are disposed on the same side edge of the cold plate (10) and are connected to the same flange (30).

8. The liquid cooling assembly of claim 6, comprising two of said cold plates (10) spaced apart, said flange (30) being disposed between said cold plates (10), said fluid inlet and said fluid outlet being staggered across said two cold plates (10).

9. A liquid cooled assembly according to any of claims 1-4, wherein the sealing ring (50) is a Teflon ring.

10. A battery assembly comprising a liquid cooled assembly according to any of claims 1-9.