CN218602558U

CN218602558U - Cooling plate, battery pack and vehicle

Info

Publication number: CN218602558U
Application number: CN202222325803.7U
Authority: CN
Inventors: 祁鹏飞; 赵鹏飞; 商艺宝
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-03-10
Anticipated expiration: 2032-08-31

Abstract

The application discloses a cooling plate, a battery pack and a vehicle, which comprise a runner plate and bus plates connected to two ends of the runner plate; the runner plate comprises a runner and a cavity, the runner penetrates through two opposite ends of the runner plate, and two ends of the cavity are sealed; the confluence plate is provided with a confluence cavity, and the flow channel is communicated with the confluence cavity; wherein the cavity has at least one vent. The utility model discloses a cooling plate, group battery, battery package and vehicle, its runner plate's cavity has the air vent to keep inside and outside atmospheric pressure balanced, can effectively prevent around the welding because the gaseous expend with heat and contract with cold and arouse the cavity sunken in the cavity, also can effectively avoid the cooling plate to lead to breaking because of the atmospheric pressure change in the cavity, do benefit to the life of extension product, also do benefit to the security that promotes the product.

Description

Cooling plate, battery pack and vehicle

Technical Field

The application relates to the technical field of automobile batteries, in particular to a cooling plate, a battery pack and a vehicle.

Background

In the related art, the battery cells of the battery pack are mounted on both sides of the cooling plate, and the cooling plate dissipates heat to the battery cells. The cooling plate comprises a flow channel plate in the middle and bus plates at two ends. The runner plate is internally provided with a runner and a cavity, the two ends of the runner are opened, and the runner is communicated with a confluence cavity in the confluence plate to realize water path circulation. The two ends of the cavity are closed, the cavity is in a hollow state, and no cooling liquid enters the cavity. The cavity plays a role in reducing weight and is beneficial to the extrusion forming of the cooling plate.

During the equipment, flow cylinder plate and runner plate weld earlier, and after the welding was accomplished, runner plate and flow cylinder plate resume to the normal atmospheric temperature gradually. And the gas in the cavity can not circulate with the outside, and only can expand with heat and contract with cold in the cavity, so that the risk of causing the cooling plate to deform and even break exists.

In view of the above, it is necessary to provide a novel cooling plate, battery pack, and vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model provides a purpose aims at overcoming correlation technique not enough, provides a cooling plate, group battery, battery package and vehicle, can prevent around the welding because the gaseous expend with heat and contract with cold in the cavity arouses that the cavity is sunken, also can avoid the cooling plate to lead to breaking because of the atmospheric pressure change in the cavity, has promoted the performance and the security performance of product.

The technical scheme provides a cooling plate, which comprises a runner plate and bus plates connected to two ends of the runner plate;

the runner plate comprises a runner and a cavity, the runner penetrates through two opposite ends of the runner plate, and two ends of the cavity are sealed;

the confluence plate is provided with a confluence cavity, and the flow channel is communicated with the confluence cavity;

wherein the cavity has at least one vent hole.

In one optional technical scheme, the vent hole is arranged at the end part of the cavity.

In one optional technical scheme, at least two vent holes which are arranged up and down at intervals are respectively arranged at two ends of the cavity.

In one optional technical scheme, the opening area of the vent hole is gradually increased along the direction from the inner side to the outer side of the cavity.

In one optional technical scheme, the vent hole is positioned in the middle of the cavity in the height direction; alternatively, the vent is proximate an upper side edge of the cavity.

In one optional technical scheme, the cavity is provided with a first side surface and a second side surface which are oppositely arranged, and the vent holes are respectively arranged on the first side surface and the second side surface; the heights of the vent holes on the first side surface and the second side surface are equal; alternatively, the height of the vent hole on the first side surface is higher or lower than the height of the vent hole on the second side surface.

In one optional technical solution, a plurality of flow channels are arranged in the flow channel plate at intervals up and down, and one cavity is arranged between any two adjacent flow channels;

each of the cavities has at least one of the vent holes.

The technical scheme of this application still provides a group battery, including electric core and aforementioned arbitrary technical scheme the cooling plate, the relative both sides of runner plate are installed at least one respectively electric core.

The technical scheme of this application still provides a battery package, includes aforementioned technical scheme the group battery.

The technical scheme of this application still provides a vehicle, includes aforementioned technical scheme the battery package.

By adopting the technical scheme, the method has the following beneficial effects:

the application provides a cooling plate, group battery, battery package and vehicle, its runner plate's cavity has the air vent to it is balanced to maintain inside and outside atmospheric pressure, can effectively prevent around the welding because the gaseous expend with heat and contract with cold in the cavity arouses the cavity sunken, also can effectively avoid the cooling plate to lead to breaking because of the atmospheric pressure change in the cavity, does benefit to the life who prolongs the product, also does benefit to the security that promotes the product.

Drawings

The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:

FIG. 1 is a perspective view of a cooling plate provided in accordance with an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of the connection of the runner plate to the bus bar;

FIG. 3 is a perspective view of an end of the runner plate;

FIG. 4 is a cross-sectional view of the flow field plate along the length thereof;

fig. 5 is a sectional view of the flow field plate in a height direction in which the height of the vent holes on the first side surface and the second side surface is equal;

fig. 6 is a sectional view of the flow field plate in a height direction in which the heights of the vent holes on the first side surface and the second side surface are not equal;

fig. 7 is a cross-sectional view of the bus plate along the height direction;

fig. 8 is a perspective view of a battery pack provided in an embodiment of the present application;

fig. 9 is a schematic view showing the assembly of the vent holes of the flow field plate with the positioning pins.

Detailed Description

Embodiments of the present application are further described below with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 7, a cooling plate according to an embodiment of the present disclosure includes a flow channel plate 1 and bus plates 2 connected to both ends of the flow channel plate 1.

The runner plate 1 includes a runner 11 and a cavity 12, the runner 11 penetrates through two opposite ends of the runner plate 1, and two ends of the cavity 12 are sealed.

The manifold plate 2 has a manifold chamber 21 therein, and the flow passage 11 communicates with the manifold chamber 21.

Wherein the cavity 12 has a vent hole 13.

The cooling plate provided by the application is used for cooling and radiating the battery core 3 shown in the figures 8-9. This cooling plate includes runner plate 1 and two cylinder manifold 2, and two cylinder manifold 2 are connected at runner plate 1's both ends, and cylinder manifold 2 and runner plate 1 welding.

The flow channel plate 1 has a flow channel 11 and a cavity 12 therein, the flow channel 11 and the cavity 12 both extend along the length direction of the flow channel plate 1, and the flow channel 11 and the cavity 12 are arranged in parallel. The flow channels 11 penetrate the opposite ends of the flow channel plate 1, that is, both ends of the flow channels 11 are open. Both ends of the cavity 12 are sealed, and the cavity 12 is hollow.

In order to balance the air pressure in the cavities 12 with the ambient air pressure, each cavity 12 has a vent hole 13 on the cavity wall, so that the cavity 12 can balance the air pressure with the ambient air pressure.

When flow plate 1 and cylinder manifold 2 weld, gaseous and external intercommunication in the cavity 12, when the temperature is high, gaseous in the cavity 12 is discharged through gas vent 13, after the welding is accomplished, after the temperature decline of flow plate 1, during external air gets into cavity 12 through gas vent 13, the atmospheric pressure and the external atmospheric pressure keep balance of cavity 12, can effectively prevent around the welding because the gaseous expend with heat and contract with cold in the cavity 12 arouses cavity 12 sunken, also can effectively avoid the cooling plate to lead to breaking because of the atmospheric pressure change in cavity 12, do benefit to the life of extension product, also do benefit to the security that promotes the product.

In one alternative, as shown in fig. 2-4, a vent 13 is provided at the end of the cavity 12. Preferably, at least one vent hole 13 is provided at both ends of the cavity 12, respectively.

The vent hole 13 is arranged at the end part of the cavity 12, so that the cell can be prevented from being blocked. After installing electric core 3 on flow path plate 1, when electric core 3 thermal expansion extrusion flow path plate 1, the gas in cavity 12 is discharged through gas vent 13, can avoid being caused flow path plate 1 to break because of the atmospheric pressure increase in cavity 12 when being extrudeed by electric core 3.

When assembling the battery core 3 and the cooling plate, the vent hole 13 can also be used as a positioning hole, the positioning piece on the assembly tool is inserted into the vent hole 13 to limit the position of the cooling plate, and then the battery core 3 is assembled on the flow channel plate 1, so that the assembly is convenient.

When assembling runner plate 1 and cylinder manifold 2, selectively pass through air vent 13 with locating pin 4, air vent 13 uses as the locating hole, convenient assembly. When the bus bar 2 contacts the positioning pin 4, the flow channel plate 1 and the bus bar 2 are assembled in place. As shown in fig. 1-2, the vent holes 13 are tangential to the edge of the bus bar 2 that is mounted in place.

In one embodiment, two ends of the cavity 12 are respectively provided with at least two vent holes 13 arranged at intervals up and down. If one of the vent holes 13 is blocked, the rest of the vent holes 13 also play a role of ventilation. During assembly, the positioning member or pin 4 is selectively inserted into one of the vents 13 at one end of the cavity 12, and the remaining vents 13 maintain ventilation.

In one of the embodiments, as shown in fig. 6, the opening area of the vent hole 13 gradually increases in a direction from the inside to the outside of the cavity 12. That is, the vent holes 13 are flared to facilitate the discharge of gas from the inside to the outside.

In one embodiment, the vent holes 13 are one or any combination of circular holes, kidney-shaped holes and square holes, so as to meet different shape requirements of the vent holes 13.

In one embodiment, as shown in fig. 5 to 6, the vent hole 13 is located in the middle of the cavity 12 in the height direction; alternatively, the vent hole 13 is near the upper side edge of the cavity 12.

The vent hole 13 can be arranged at the middle position of the cavity 12 in the height direction according to the actual requirement, so that the structural arrangement is convenient.

It is also possible to arrange the vent hole 13 at the upper edge position in the height direction of the cavity 12 as occasion demands, and the gas in the cavity 12 floats up to be quickly discharged from the vent hole 13 at the higher position at the time of welding.

In one embodiment, as shown in fig. 5-6, the cavity 12 has oppositely disposed first and second side surfaces 14 and 15. The first side surface 14 and the second side surface 15 are provided with vent holes 13, respectively. Wherein the vent holes 13 on the first side surface 14 and the second side surface 15 are equal in height. Still alternatively, the height of the vent holes 13 on the first side surface 14 is higher or lower than the height of the vent holes 13 on the second side surface 15.

The first and second side surfaces 14 and 15 may correspond to the front and back side surfaces of the cavity 12. The vent holes 13 on the first side surface 14 and the second side surface 15 are respectively communicated with the outside, so that the air pressure balance between the cavity 12 and the outside is maintained.

The heights of the vent holes 13 on the first side surface 14 and the second side surface 15 can be set to be equal according to actual needs, that is, the heights of the vent holes 13 on the two sides are consistent, so that a pair of vent holes 13 can be directly formed at a time through a tool, and the positioning piece or positioning pin 4 can penetrate through the two vent holes 13 to realize the positioning function.

The heights of the vent holes 13 on the first side surface 14 and the vent holes 13 on the second side surface 15 can be set to be different according to actual needs, and the vent holes 13 on the first side surface 14 can be higher or lower than the vent holes 13 on the second side surface 15, so that gas can flow from different heights, and the air pressure balance between the cavity 12 and the outside can be maintained.

In one embodiment, as shown in fig. 4 to 6, a plurality of flow channels 11 are arranged in the flow channel plate 1 at intervals up and down, and a cavity 12 is formed between any two adjacent flow channels 11. Each cavity 12 has at least one vent hole 13.

The plurality of flow channels 11 are used for circulating cooling liquid, so that the cooling effect of the battery cell 3 can be improved.

In one embodiment, the bus plate 2 and the runner plate 1 are welded by brazing. The brazing heating temperature is lower, the joint is smooth and flat, and the workpiece deformation is small.

In one embodiment, as shown in fig. 2 and 7, the junction 22 communicating with the manifold chamber 21 is provided on each of the front and rear sides of the manifold plate 2. The joint 22 can be directly used for connecting with a cooling liquid pipeline, and can also be used for connecting two adjacent confluence plates 2 together to realize water channel circulation.

As shown in fig. 8 to 9, an embodiment of the present application provides a battery pack, which includes a battery cell 3 and a cooling plate according to any one of the foregoing embodiments. At least one electric core 3 is respectively installed on two opposite sides of the flow channel plate 1.

The battery pack provided by the application comprises a plurality of battery cells 3 and a cooling plate.

For the structure, structure and operation principle of the cooling plate, please refer to the description of the cooling plate, which will not be repeated herein.

A plurality of battery cores 3 are respectively bonded on two opposite sides of the flow channel plate 1, and the battery cores 3 can be bonded on the flow channel plate 1 through glue or double-sided glue.

In one embodiment, the two ends of the cavity 12 are respectively provided with the vent holes 13, all the battery cells 3 are located between the vent holes 13 at the two ends, and the battery cells 3 do not block the vent holes 13.

The embodiment of the application provides a battery pack, which comprises the battery pack of the previous embodiment. The battery pack includes a battery box in which the battery pack is mounted.

The vehicle provided by the embodiment of the application comprises the battery pack in the embodiment. The battery box of the battery pack is mounted to a designated location of the vehicle, for example, the battery box is mounted to the vehicle body chassis.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

What has been described above is merely the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.

Claims

1. A cooling plate is characterized by comprising a runner plate and confluence plates connected to two ends of the runner plate;

wherein the cavity has at least one vent.

2. A cooling plate as claimed in claim 1, wherein said vent holes are provided at the ends of said cavity.

3. The cooling plate as claimed in claim 2, wherein at least two of said ventilation holes are disposed at two ends of said cavity.

4. The cooling plate as claimed in claim 1, wherein an opening area of the vent hole is gradually increased in a direction from an inner side to an outer side of the cavity.

5. A cooling plate as claimed in any one of claims 1 to 4, wherein said ventilation holes are in the middle of said cavity in the height direction; alternatively, the vent is proximate an upper side edge of the cavity.

6. The cooling plate as claimed in any one of claims 1 to 4, wherein the cavity has first and second oppositely disposed side surfaces on which the vent holes are respectively provided; the heights of the vent holes on the first side surface and the second side surface are equal; alternatively, the height of the vent hole on the first side surface is higher or lower than the height of the vent hole on the second side surface.

7. A cooling plate as claimed in any one of claims 1 to 4, wherein a plurality of said flow channels are arranged in said flow channel plate at intervals up and down, and any two adjacent flow channels have one said cavity therebetween;

each of the cavities has at least one of the vent holes.

8. A battery pack, comprising a cell and the cooling plate of any one of claims 1 to 7;

at least one battery cell is respectively installed on two opposite sides of the runner plate.

9. A battery pack characterized by comprising the battery pack according to claim 8.

10. A vehicle characterized by comprising the battery pack according to claim 9.