CN217334218U

CN217334218U - Cooling plate, support assembly with same and battery pack

Info

Publication number: CN217334218U
Application number: CN202220720146.3U
Authority: CN
Inventors: 何敏强; 高毓轩; 李文博; 陈俊挺; 雷悦民; 宋超
Original assignee: Zhejiang Hengyuan New Energy Technology Co Ltd
Current assignee: Zhejiang Hengyuan New Energy Technology Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-30
Anticipated expiration: 2032-03-28

Abstract

The utility model provides a cooling plate, support assembly and battery package that have it. The cooling plate comprises at least two sub-plates which are combined together, wherein split cooling runners are arranged on the sub-plates, the split cooling runners are combined to obtain a cooling runner, and cooling fluid can enter and exit the cooling plate through the cooling runner. The utility model provides a heat exchange efficiency of cooling plate is high.

Description

Cooling plate, support assembly with same and battery pack

Technical Field

The utility model relates to a battery package structural design field, concretely relates to cooling plate, support assembly and battery package that have it.

Background

In the related art, a bracket assembly including a bracket and a cooling plate is disposed around (e.g., at a side and a bottom) the battery module, wherein the cooling plate is disposed on the bracket and is used for introducing a cooling fluid to remove heat generated during the operation of the battery. Specifically, as shown in fig. 1, the bracket (not shown) is substantially square, and is wrapped on the outer periphery of the cooling plate a by means of insert molding; the cooling plate A comprises a heat conducting plate A1 and a cooling tube A2, the heat conducting plate A1 is mostly a rectangular aluminum plate, the cooling tube A2 is prepared by bending a straight tube into a U-shaped shape, and is connected with the heat conducting plate A1 along the edge contour of the heat conducting plate A1 in a welding mode. The disadvantage of this arrangement is that the cooling tube a2 and the heat conducting plate a1 are connected by welding, the contact surface is relatively small, the heat exchange efficiency is easily affected by the quality of the welded area, and the heat exchange efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a cooling plate, a bracket assembly having the same, and a battery pack.

The utility model provides a cooling plate includes at least two branch boards of combining together, be equipped with components of a whole that can function independently cooling runner on the branch board, components of a whole that can function independently cooling runner combination obtains cooling runner, and cooling fluid can pass through cooling runner business turn over the cooling plate.

Optionally, the cooling channel includes a main channel and an auxiliary channel, the main channel is disposed along an edge of the cooling plate, and the auxiliary channel is located inside the enclosure of the main channel and is communicated with the main channel.

Optionally, the cooling flow channel forms a convex flow channel on the surface of the cooling plate, and the cooling flow channel can form an absorption area concave relative to the cooling flow channel at the center of the cooling flow channel.

Alternatively, the auxiliary flow channel has a straight course or a U-shaped course.

Optionally, the width of the auxiliary flow channel is greater than the width of the main flow channel.

Optionally, the width of the main runner and the auxiliary runner is 6-10 mm, and the height of the main runner and the auxiliary runner is 2-5 mm.

The utility model also provides a support assembly, include as above arbitrary the cooling plate, still include the support, the support through the inserts mould plastics form in cooling plate week side, and the cladding the edge of cooling plate.

Optionally, a fluid inlet and outlet portion is disposed on the support, and the fluid inlet and outlet portions are respectively communicated with the inlet and outlet of the cooling flow channel.

Optionally, the bracket assembly is located on the peripheral side of the battery module.

The utility model also provides a battery package, include as above arbitrary the cooling plate.

To sum up, form through making the cooling plate through the combination of the minute board that quantity is two at least, the utility model discloses following beneficial effect has:

1. the production cost of the bracket assembly can be reduced; more specifically, the bending step of the cooling pipes in the related art increases the complexity of the cooling plate preparation, and indirectly increases the development and manufacturing costs of the bracket assembly, while the sub-plates used in the present invention can be obtained by stamping, and when the sub-plates are combined to have a mirror symmetry relationship with each other, the same mold can be used for production; based on this, the utility model discloses a forming process is simple, and development cost is cheap.

2. Compared with the prior art, the utility model provides a part that support assembly used when preparing is few (especially when the minute board adopts the same mould to produce), can reduce the complexity of support assembly production equipment.

3. The utility model has high heat exchange efficiency; more detailed description is, the utility model provides a cooling flow is the partly of cooling plate, and cooling fluid lets in back among the cooling flow, can be direct and the electric core that corresponds between the heat transfer, need not pass through the secondary contact (indicate in the correlation technique, the heat need be passed to the temperature guide plate by electric core earlier, again through the welding between temperature guide plate and the cooling tube even regional, just conducts the cooling fluid in the cooling tube at last).

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a cooling plate in the related art.

Fig. 2 is a schematic structural view of a bracket assembly according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a cooling plate according to an embodiment of the present invention.

Fig. 4 is a schematic view of the cooling plate and the bracket after being assembled according to the embodiment of the present invention.

Fig. 5 is a schematic partial structural view of a cooling plate according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a possible structure of a cooling plate according to an embodiment of the present invention.

Description of the reference numerals

1-bracket, 11-fluid inlet and outlet part, 111-outlet, 112-inlet, A, 2-cooling plate, A1-temperature guide plate, A2-cooling pipe, 21-branch plate, 211-first branch plate, 212-second branch plate, 213-split main runner, 214-split auxiliary runner, 215-split water outlet, 216-split water inlet, 3-cooling runner, 31-main runner, 32-auxiliary runner and 4-absorption zone.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The terms "first," "second," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

As shown in fig. 2 and fig. 3, the utility model provides a support assembly, including support 1 and cooling plate 2, wherein support 1 is roughly square, and cooling plate 2 is located the middle part of support 1, obtains by the combination of the minute board 21 that quantity is two at least for let in cooling fluid, with the cooling battery, derive the heat that the battery operation in-process produced.

Specifically, the bracket 1 is formed on the outer peripheral side of the cooling plate 2 by insert molding, and wraps the edge profile of the cooling plate 2 (see fig. 4), the cooling plate 2 is a three-system stainless aluminum plate with a rectangular cross section, and is provided with the cooling flow channel 3, the cooling flow channel 3 comprises a circle of main flow channel 31 which is located inside the cooling plate 2 and distributed along the edge of the cooling plate 2, and an auxiliary flow channel 32 which is located inside the main flow channel 31, and the main flow channel 31 and the auxiliary flow channel 32 are arranged so that the cooling plate 2 forms a profile shape with an uneven surface. In this embodiment, the number of the auxiliary channels 32 is three, the auxiliary channels 32 extend straight along the length direction of the cooling plate 2, and both ends of the auxiliary channels are respectively communicated with the main channel 31, so that the middle of the battery module can be cooled when the bracket assembly contacts the battery module. Of course, in some possible embodiments, the auxiliary flow channels 32 may also be provided to extend straight in the width direction of the cooling plate 2.

In view of the above, the cooling plate 2 in the present embodiment is formed by combining two sub-plates 21, the two sub-plates 21 are specifically a first sub-plate 211 and a second sub-plate 212 obtained by stamping, the first sub-plate 211 and the second sub-plate 212 are provided with split cooling channels, and include a split main channel 213 and a split auxiliary channel 214, the split main channel 213 is in a form of half that the main channel 31 is split into two, the split auxiliary channel 214 is in a form of half that the auxiliary channel 32 is split into two, and before the first sub-plate 211 and the second sub-plate 212 are combined, the split main channel 213 and the split auxiliary channel 214 are in an opening form having a U-shaped cross section. When the first plate 211 and the second plate 212 are aligned with each other and are connected into a whole by brazing, the first plate 211 and the second plate 212 are mirror images of each other; meanwhile, the first division plate 211 is connected to a corresponding portion (for example, a division plate edge or a flow channel edge) of the second division plate 212 by welding such as brazing or resistance welding, the main flow channel 31 is formed by combining the main flow channels 213 of the first division plate 211 and the second division plate 212, the auxiliary flow channel 32 is formed by combining the auxiliary flow channels 214 of the first division plate 211 and the second division plate 212, and the cooling flow channel 3 is formed and the cooling plate 2 is molded. Of course, if the main flow channel 31 or the auxiliary flow channel 32 has a different shape, the first partition plate 211 and the second partition plate 212 may not be mirror images of each other, and may be formed by stamping through different dies.

Furthermore, in this embodiment, the two ends of the main fluid channel 213 are respectively provided with a split water outlet 215 and a split water inlet 216, and after the first partition plate 211 and the second partition plate 212 are welded together, the split water outlet 215 and the split water inlet 216 of the first partition plate 211 and the second partition plate 212 are combined to form the water outlet and the water inlet of the cooling plate 2. Correspondingly, as shown in fig. 4, after the frame 1 is formed, the frame 1 covers the main flow channel 31 of the cooling plate 2, and a fluid inlet and outlet 11 is formed at the water outlet and the water inlet of the cooling plate 2, where the fluid inlet and outlet 11 includes an inlet 112 communicated with the water inlet and an outlet 111 communicated with the water outlet, so as to facilitate the corresponding fluid to enter and exit the cooling plate 2 through the frame 1.

Preferably, as shown in fig. 5, it is noted that the width of the main channel 31 is a, the width of the auxiliary channel 32 is b, the height of the main channel 31 is c, the height of the auxiliary channel 32 is d, the recommended values of the widths of the main channel 31 and the auxiliary channel 32 are 6-10 mm, and the recommended values of the heights of the main channel 31 and the auxiliary channel 32 are 2-5 mm; more preferably, the width of the auxiliary channel 32 is greater than that of the main channel 31, and this is set because if a heat generation phenomenon occurs at a battery module portion (for example, a certain cell at the edge of the module) contacting with the bracket assembly, the middle portion of the module tends to heat up faster or higher, and based on this, the width of the auxiliary channel 32 is greater than that of the main channel 31, so as to pass through more cooling fluid, improve the cooling effect of the cooling plate 3 on the battery module, and optimize the heat dissipation efficiency.

Alternatively, as shown in fig. 6, the auxiliary flow channel 32 may also be provided as a right-angle U shape with a circuitous trend, and the open end of the right-angle U shape is communicated with the main flow channel 31, so as to form a flow channel shape similar to a shape of a Chinese character 'hui' on the cooling plate 2; preferably, because the surface of the cooling plate 2 is formed into an uneven shape due to the arrangement of the cooling flow channel 3, and the battery cell sometimes expands in the middle of the battery cell during use, in some embodiments, only a certain height difference (for example, 0.5-1mm) exists between the auxiliary flow channel 32 and the surface of the cooling plate 2 located inside the enclosure of the auxiliary flow channel 32, so that the absorption region 4 which is recessed relative to the cooling flow channel 3 can be constructed on the cooling plate 2, and the absorption region 4 can be used as an accommodation region for the expanded battery cell, so as to reduce stress applied to the support assembly during expansion of the battery cell, thereby reducing the risk of battery leakage and increasing the service life of the battery pack. Of course, the number of the right-angled U-shaped auxiliary flow channels 32 can be flexibly set by those skilled in the art according to the requirement, and several auxiliary flow channels 32 can be provided and form several circles of flow channels in the surrounding of the main flow channel 31.

In conclusion, through making the cooling plate 2 form through the combination of the minute board 21 that quantity is two at least, the utility model discloses following beneficial effect has:

1. the production cost of the bracket assembly can be reduced; more specifically, the bending step of the cooling tube a2 in the related art increases the complexity of the cooling plate preparation, indirectly increases the development and manufacturing cost of the bracket assembly, and the sub-plates 21 used in the present invention can be obtained by stamping, and when the sub-plates 21 are combined to have a mirror symmetry relationship with each other, the same mold can be used for production; based on this, the utility model discloses a forming process is simple, and development cost is cheap.

2. Compared with the prior art, the utility model provides a part that support assembly used when preparing is few (especially when minute board 21 adopted the same mould to produce), can reduce the complexity of support assembly production equipment.

3. The utility model has high heat exchange efficiency; more detailed description is, the utility model provides a cooling runner 3 is the partly of cooling plate 2, and cooling fluid lets in cooling runner 3 back, can be direct and the electric core between the heat transfer that corresponds, need not pass through the secondary contact (indicate in the correlation technique, the heat need be passed to the temperature guide plate by electric core earlier, again through the welding between temperature guide plate and the cooling tube even regional, just at last conduct the cooling fluid to in the cooling tube).

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The cooling plate is characterized by comprising at least two sub-plates which are combined together, wherein split cooling flow channels are arranged on the sub-plates and are combined to obtain cooling flow channels, and cooling fluid can enter and exit the cooling plate through the cooling flow channels.

2. The cooling plate of claim 1, wherein the cooling flow channel comprises a primary flow channel and a secondary flow channel, the primary flow channel being disposed along an edge of the cooling plate, the secondary flow channel being located within the enclosure of the primary flow channel and communicating with the primary flow channel.

3. The cooling plate of claim 2, wherein the cooling flow channel forms a convex flow channel on the surface of the cooling plate, and the cooling flow channel can form an absorbing region concave relative to the cooling flow channel at the center of the cooling flow channel.

4. A cooling plate as claimed in claim 2, characterized in that the secondary flow channels have a straight run or have a U-shaped run.

5. The cooling plate of claim 2, wherein the width of the secondary flow channel is greater than the width of the primary flow channel.

6. The cooling plate as claimed in claim 2, wherein the width of the main flow channel and the auxiliary flow channel is 6 to 10mm, and the height of the main flow channel and the auxiliary flow channel is 2 to 5 mm.

7. A bracket assembly, comprising the cooling plate as claimed in any one of claims 1 to 6, and further comprising a bracket, wherein the bracket is formed on the periphery of the cooling plate by insert molding and covers the edge of the cooling plate.

8. The support assembly of claim 7, wherein the support has fluid inlets and outlets respectively communicating with the inlet and outlet of the cooling channel.

9. The carrier assembly of claim 7, wherein the carrier assembly is located on a peripheral side of the battery module.

10. A battery pack comprising the cooling plate according to any one of claims 1 to 6.