CN214176103U

CN214176103U - Cold drawing and battery module

Info

Publication number: CN214176103U
Application number: CN202022716092.7U
Authority: CN
Inventors: 李东方; 曾驱虎; 汪超; 胡冬冬; 石桥; 朱志强; 徐景
Original assignee: Shenzhen Clou Electronics Co Ltd
Current assignee: Shenzhen Clou Electronics Co Ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-09-10
Anticipated expiration: 2030-11-20

Abstract

The utility model provides a cold drawing and battery module. The cold drawing accessible aluminium extrusion technology processing obtains, the utility model provides a cold drawing includes main part and shutoff piece, and the main part has a plurality of heat transfer runners that can supply heat transfer medium to flow, and the shutoff piece is connected with the main part, and the shutoff piece is used for sealing a plurality of heat transfer runners. The utility model provides a battery module includes above-mentioned cold board. Adopt different shutoff modes to the main part that has a plurality of heat transfer passageways and can change the flow path of cold drawing, form the cold drawing of isostructure to satisfy arranging the heat dissipation demand of different heat sources, the utility model provides a cold drawing and battery module suitability are better, and manufacturing cost is lower.

Description

Cold drawing and battery module

Technical Field

The utility model relates to a battery cooling technology field especially relates to a cold drawing and battery module.

Background

The battery can generate heat at the course of the work, and in order to guarantee that the battery can normally operate for a long time, some battery module can set up the cold drawing in battery body periphery, and the coolant liquid flows in the cold drawing and absorbs the heat of battery through the heat exchange. Different areas of the battery have different heat productivity and different heat dissipation requirements, and in order to meet the heat dissipation requirements and the heat dissipation medium flow equalization requirements, the trend and the distribution area of the heat exchange flow channel of the cold plate generally need to be designed in a targeted manner, so that the cold plate has poor universality; the existing batteries are various in types, and different cold plates are often required to be designed and manufactured aiming at different batteries, so that the production cost is undoubtedly increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a cold drawing through the position that changes the shutoff piece, can change the flow path of cold drawing, and this cold drawing suitability is high, and production low in manufacturing cost.

The utility model discloses still provide a battery module of having above-mentioned cold drawing.

According to the utility model discloses a cold plate of first aspect embodiment includes: the heat exchange device comprises a main body, a heat exchange device and a heat exchange device, wherein the main body is provided with a plurality of heat exchange flow channels, and a heat exchange medium can flow through the heat exchange flow channels; and the plugging piece is connected with the main body and is used for sealing the plurality of heat exchange flow channels.

According to the utility model discloses cold drawing has following beneficial effect at least: the number and relative position relationship of the blocked heat exchange flow channels and the unblocked heat exchange flow channels can be changed by changing the positions and the number of the blocking pieces, so that the heat exchange area of the cold plate is adjusted to be adapted to different objects to be heat exchanged; and the flow direction of the heat exchange medium can be adjusted by changing the number and the relative position relationship of the blocked heat exchange flow channels and the unblocked heat exchange flow channels, so that the flow equalization is realized. The cold plate has good adjustability and strong applicability, and a user does not need to design and manufacture various different cold plates aiming at different objects to be heated, thereby saving the production and manufacturing cost.

According to some embodiments of the utility model, the cold plate still includes the reposition of redundant personnel piece, the exit end of reposition of redundant personnel piece with the main part is connected, the reposition of redundant personnel piece has the reposition of redundant personnel sprue, the reposition of redundant personnel sprue is with a plurality of heat transfer runner intercommunication, heat transfer medium can pass through the reposition of redundant personnel sprue gets into in the heat transfer runner, follow the entry end orientation of reposition of redundant personnel piece in the direction of the exit end of reposition of redundant personnel piece, the width of reposition of redundant personnel sprue increases gradually.

According to some embodiments of the utility model, the reposition of redundant personnel piece includes the reposition of redundant personnel face, the reposition of redundant personnel face sets up the lateral part of reposition of redundant personnel sprue is followed the entry end orientation of reposition of redundant personnel piece in the direction of the exit end of reposition of redundant personnel piece, the reposition of redundant personnel face is towards keeping away from the direction extension at the center of reposition of redundant personnel piece.

According to some embodiments of the invention, the splitter surface is a bevel or a cambered surface.

According to the utility model discloses a some embodiments, cold plate still includes the mass flow piece, the entry end of mass flow piece with the main part is connected, the mass flow piece has the mass flow sprue, the mass flow sprue is with a plurality of heat transfer runner intercommunication is followed the heat transfer runner flows heat transfer medium can get into in the mass flow sprue, follow the entry end orientation of mass flow piece in the direction of the exit end of mass flow piece, the width of mass flow sprue reduces gradually.

According to some embodiments of the utility model, the mass flow piece includes the mass flow face, the mass flow face sets up the lateral part of mass flow sprue is followed the entry end orientation of mass flow piece in the direction of the exit end of mass flow piece, the mass flow face is towards being close to the direction extension at the center of mass flow piece.

According to some embodiments of the invention, the flow collecting surface is an inclined surface or an arc surface.

According to some embodiments of the utility model, the cold plate still includes the water conservancy diversion spare, the water conservancy diversion spare is used for making heat transfer medium is in the inside edge of water conservancy diversion spare the width direction of main part flows, the water conservancy diversion spare with the main part is connected, follows the water conservancy diversion spare with the one end orientation that the main part is connected the water conservancy diversion spare is kept away from in the direction of the one end of main part, the width of water conservancy diversion spare reduces gradually.

According to some embodiments of the utility model, the shutoff piece is the slice, the shutoff piece covers the opening at heat transfer runner both ends is in order to seal the heat transfer runner.

According to the utility model discloses a battery module of second aspect embodiment, battery module includes above-mentioned embodiment the cold plate.

According to the utility model discloses battery module has following beneficial effect at least: the production and manufacturing cost is low.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

FIG. 1 is a schematic view of a body in some embodiments;

FIG. 2 is a schematic view of one manner of occluding the body shown in FIG. 1;

FIG. 3 is a schematic view of another plugging mode of the main body shown in FIG. 1;

FIG. 4 is a top view of a cold plate in some embodiments;

FIG. 5 is a top view of a cold plate according to an embodiment;

FIG. 6 is a top view of a cold plate in some embodiments;

FIG. 7 is a top view of a cold plate in some embodiments.

Reference numerals: 101-main body, 102-heat exchange flow channel, 201-blocking piece, 401-flow dividing piece, 402-flow collecting piece, 403-flow dividing main flow channel, 404-flow dividing surface, 405-flow collecting main flow channel, 406-flow collecting surface and 407-flow guide piece.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood not to include the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model provides a cold drawing, referring to fig. 1, the cold drawing includes main part 101, and main part 101 has a plurality of heat transfer runners 102, and heat transfer runner 102 can supply heat transfer medium to flow. The main body 101 has a plurality of mutually separated narrow and long cavities extending in the front-rear direction, a single cavity is a single heat exchange flow channel 102, and two openings of the heat exchange flow channel 102 are respectively located on the front and rear end faces of the main body 101. With reference to fig. 2 or fig. 3, the cold plate further includes a blocking member 201, the blocking member 201 is connected to the main body 101, and the blocking member 201 is configured to block the plurality of heat exchange flow channels 102, so as to prevent the heat exchange medium from passing through the heat exchange flow channels 102.

Fig. 2 and 3 show two ways of plugging the body 101. In fig. 2, the main body 101 has 16 heat exchange flow channels 102, wherein the 4 th, 8 th, 12 th and 16 th heat exchange flow channels 102 are blocked from left to right, and the rest heat exchange flow channels 102 are not blocked and are used for passing a heat exchange medium. In fig. 3, the main body 101 has 16 heat exchange flow channels 102, wherein the 4 th, 8 th, 9 th, 12 th, 13 th and 14 th heat exchange flow channels 102 are all blocked from left to right, and the rest heat exchange flow channels 102 are not blocked and can be passed by a heat exchange medium.

The region of the main body 101 where the heat exchange flow channels 102 which are not blocked are located is a heat exchange region, and the region of the main body 101 where the heat exchange flow channels 102 which are blocked are located is a non-heat exchange region. Taking the cooling of the battery as an example, the heat exchange area has the cooling medium to pass through, the part of the battery in contact with the heat exchange area dissipates heat better, while the non-heat exchange area has no cooling medium to pass through, and the part of the battery in contact with the non-heat exchange area dissipates heat relatively worse. The parts with more serious battery heating can be contacted with the heat exchange area of the main body 101, and the parts with less battery heating are contacted with the non-heat exchange area of the main body 101. It should be noted that the name "non-heat exchange region" is only to distinguish from the heat exchange region, and does not refer to that the non-heat exchange region does not exchange heat with the battery, and actually, the portion of the battery in contact with the non-heat exchange region still has heat conduction, but the heat exchange efficiency is relatively low.

Referring to fig. 4 and 5, for one and the same main body 101, different cold plates can be obtained by using the blocking piece 201 to block different heat exchange flow passages 102 in the main body 101 and guiding the flow components at the two ends of the main body. The flow directing member may include a flow splitter 401, a flow collector 402, and a flow guide 407. Referring to fig. 4, for a main body 101 having 18 heat exchange flow channels 102, 2 heat exchange flow channels in the middle of the main body 101 are blocked (by arranging a blocking member), a flow dividing member 401 and a flow collecting member 402 are connected to the front end of the main body 101, and a flow guiding member 407 is connected to the rear end of the main body 101, so that a cold plate with a U-shaped heat exchange medium flowing in a whole direction is finally obtained. Referring to fig. 5, for a main body 101 having 18 heat exchange flow channels 102, the 4 th, 5 th, 9 th, 10 th, 14 th and 15 th heat exchange flow channels 102 from left to right in the main body 101 are blocked, a flow dividing member 401 and a flow collecting member 402 are connected to the rear end of the main body 101, two flow guiding members 407 are connected to the front end of the main body 101, and two flow guiding members 407 are connected to the rear end of the main body 101, so that a cold plate with an overall heat exchange medium flowing in an S shape is finally obtained. All the components of the cold plate can be obtained by adopting an aluminum extrusion forming process.

In summary, by changing the position and the number of the blocking pieces 201, the number and the relative position relationship between the blocked heat exchange flow channels 102 and the unblocked heat exchange flow channels 102 can be changed, so as to adjust the heat exchange area of the cold plate to adapt to different objects to be heat exchanged; and the flow path of the heat exchange medium can be adjusted by changing the number and relative position relationship of the blocked heat exchange flow channels 102 and the unblocked heat exchange flow channels 102. Therefore, the cold plate has good adjustability and strong applicability, and a user does not need to design and manufacture various different cold plates aiming at different objects to be heated, thereby saving the production and manufacturing cost.

Referring to fig. 1 to 3, in some embodiments, the blocking member 201 is provided in a sheet shape, the area of the blocking member 201 is larger than the area of the openings at the front and rear ends of the heat exchange flow channel 102, and the blocking member 201 covers the openings at both ends of the heat exchange flow channel 102, thereby closing the heat exchange flow channel 102. The blocking member 201 may be connected to the main body 101 by welding to ensure sealing performance of the blocking member, or may be connected to the main body 101 by some detachable connection method to adjust the cold plate, such as clamping the blocking member 201 to the main body 101, connecting the blocking member 201 to the main body 101 by a threaded fastener, and so on, which are not limited to possible connection methods. In other embodiments, the heat exchange flow channel 102 may also be blocked by filling, for example, the blocking piece 201 is configured as an elongated piece, and the blocking piece 201 is disposed inside the heat exchange flow channel 102 to fill the heat exchange flow channel 102 and prevent the heat exchange medium from passing through the heat exchange flow channel 102. Relatively speaking, the sheet-shaped plugging piece 201 is used for covering the opening of the heat exchange flow channel 102, so that less material is needed, and the production cost is favorably reduced. The cross-section of heat exchange flow channel 102 may be configured as a rectangle (the cross-section herein refers to the cross-section of heat exchange flow channel 102 taken by a vertical plane normal to the front or back, with reference to the orientation of fig. 1) for production. In order to match the cross-sectional shape or the opening shape of the heat exchange flow channel 102, the sheet-shaped plugging member 201 may also be rectangular; in other embodiments, the cross section of the heat exchange flow channel 102 may be configured to be circular, and the blocking member 201 may be correspondingly adjusted to be circular.

Referring to fig. 4, 6 and 7, in some embodiments, a cavity is formed inside the flow divider 401, the cavity inside the flow divider 401 is a flow dividing main channel 403, the flow dividing main channel 403 can allow a heat exchange medium to flow, the flow dividing main channel 403 is communicated with the plurality of heat exchange channels 102, one end of the flow divider 401 is connected to the main body 101, one end of the flow divider 401, which is far away from the main body 101, can be connected to an external pipeline (not shown in the figure) for conveying the heat exchange medium, and the heat exchange medium can flow through the flow dividing main channel 403 and the heat exchange channels 102 in sequence. One end of the flow divider 401 connected to the main body 101 is an outlet end of the flow divider 401, one end of the flow divider 401 far from the main body 101 (or one end of the flow divider 401 connected to an external pipeline) is an inlet end of the flow divider 401, for example, fig. 4 and 5 are taken as examples, the front end of the flow divider 401 is an inlet end of the flow divider 401, the rear end of the flow divider 401 is an outlet end of the flow divider 401, and the heat exchange medium enters the inner cavity of the flow divider 401 from the inlet end of the flow divider 401, leaves the inner cavity of the flow divider 401 from the outlet end of the flow divider 401, and enters the heat exchange runner 102.

The flow divider 401 is mainly used to distribute the heat exchange medium to the plurality of heat exchange flow channels 102. In order to ensure a certain delivery pressure and delivery flow, the pipe diameter of the external pipe connected to the flow divider 401 is usually not too large, so that, in order to distribute the heat exchange medium to the plurality of heat exchange flow channels 102, the flow divider 401 may be configured such that the width of the flow divider 401 gradually increases along the direction from the inlet end of the flow divider 401 to the outlet end of the flow divider 401. The width direction of the flow dividing member 401 herein refers to the arrangement direction of the plurality of heat exchange flow channels 102, i.e., corresponds to the left/right direction in fig. 4 to 6. In addition, the width of the flow divider 401 gradually changes along the flowing direction of the heat exchange medium, and compared with the rectangular flow divider 401 shown in fig. 5, the rectangular flow divider can effectively avoid the generation of vortexes near the inlets of the plurality of heat exchange flow channels 102, thereby avoiding the influence of the vortexes on the heat exchange efficiency of the cold plate local area, and in addition, the reduction of the vortexes is beneficial to reducing the flow resistance of the system and the required power of the delivery pump. In order to realize the width change of the flow divider 401, in some embodiments, the flow divider 401 further includes a flow dividing surface 404, the flow dividing surface 404 is disposed at a side portion of the flow dividing main channel 403 (may be disposed at only one side of the flow dividing main channel 403, or may be disposed at both sides of the flow dividing main channel 403), and the flow dividing surface 404 extends in a direction away from the center of the flow divider 401 along a direction from the inlet end of the flow divider 401 to the outlet end of the flow divider 401, and the flow dividing surface 404 shown in fig. 4 to 6 is configured as a simpler and easier-to-machine inclined surface; in other embodiments, the flow dividing surface 404 may also be configured as a cambered surface in consideration of optimizing the flow field distribution of the heat exchange medium in the flow dividing main channel 403.

Similar to the flow dividing member 401, in some embodiments, a cavity is formed inside the flow collecting member 402, the cavity inside the flow collecting member 402 is a flow collecting main channel 405, the flow collecting main channel 405 can allow a heat exchange medium to flow, one end of the flow collecting member 402 is connected to the main body 101, the flow collecting main channel 405 is communicated with the plurality of heat exchange channels 102, one end of the flow dividing member 401 away from the main body 101 can also be connected to an external pipe, and the heat exchange medium can flow through the heat exchange channels 102 and the flow collecting main channel 405 successively. The end of the collecting piece 402 connected to the main body 101 is an inlet end of the collecting piece 402, the end of the collecting piece 402 far from the main body 101 (or the end of the collecting piece 402 connected to the external pipeline) is an outlet end of the collecting piece 402, if fig. 4 and 5 are taken as examples, the front end of the collecting piece 402 is the inlet end of the collecting piece 402, the rear end of the collecting piece 402 is the outlet end of the collecting piece 402, and the heat exchange medium enters the inner cavity of the collecting piece 402 from the inlet end of the collecting piece 402, exits the inner cavity of the collecting piece 402 from the outlet end of the collecting piece 402 and enters the heat exchange runner 102.

The collecting member 402 is used to collect the heat exchange medium flowing out from the plurality of heat exchange flow channels 102 for subsequent transportation back to the unit for processing the heat exchange medium. Similar to the flow divider 401, in order to facilitate the collection of the heat exchange medium flowing out of the plurality of heat exchange flow channels 102 into an external pipe and to avoid the generation of vortices near the outlets of the heat exchange flow channels 102, the flow collector 402 may be arranged such that the width of the flow collector 402 gradually decreases in a direction from the inlet end of the flow collector 402 to the outlet end of the flow collector 402. In some embodiments, current collector 402 includes a current collecting face 406, current collecting face 406 being disposed on a side of current collecting primary channel 405, current collecting face 406 extending toward a direction proximate a center of current collector 402 in a direction from an inlet end of current collector 402 toward an outlet end of current collector 402. The collecting surface 406 may likewise be provided as a bevel or as a curved surface.

Similar to the flow divider 401 and the flow collector 402, in some embodiments, the cold plate includes a flow guide 407, and the flow guide 407 is used for allowing the heat exchange medium to flow in the width direction of the main body 101 inside the flow guide 407 (taking fig. 4 as an example, the heat exchange medium flows from right to left inside the flow guide 407), so as to construct a U-shaped or S-shaped flow path of the heat exchange medium inside the cold plate. The flow guide member 407 is connected to the main body 101, and the width of the flow guide member 407 gradually decreases in a direction from the end of the flow guide member 407 connected to the main body 101 to the end of the flow guide member 407 far away from the main body 101, referring to fig. 4, 6, and 7, the width of the flow guide member 407 gradually decreases from front to back, so as to reduce the generation of eddy currents, thereby reducing the influence of the eddy currents on the heat exchange efficiency of the local cold plate region. The flow dividing member 401, the flow collecting member 402 and the flow guide member 407 may be formed in a trapezoidal, triangular, or the like shape.

The utility model also provides a battery module including above-mentioned cold drawing, among this battery module, the upside or the downside surface of the main part 101 of cold drawing can laminate with battery body's surface. The cold plate in the battery module has low cost, and the whole production and manufacturing cost of the battery module is low.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims

1. A cold plate, comprising:

the heat exchange device comprises a main body, a heat exchange device and a heat exchange device, wherein the main body is provided with a plurality of heat exchange flow channels, and a heat exchange medium can flow through the heat exchange flow channels;

and the plugging piece is connected with the main body and is used for sealing the plurality of heat exchange flow channels.

2. The cold plate of claim 1, further comprising a flow divider having an outlet end connected to the body, the flow divider having a flow divider main flow passage in communication with the plurality of heat exchange flow passages, the heat exchange medium being able to enter the heat exchange flow passages through the flow divider main flow passage, the flow divider main flow passage gradually increasing in width in a direction from the inlet end of the flow divider toward the outlet end of the flow divider.

3. The cold plate of claim 2, wherein the flow divider includes a flow dividing surface disposed at a side of the flow dividing primary flow passage, the flow dividing surface extending away from a center of the flow divider in a direction from an inlet end of the flow divider toward an outlet end of the flow divider.

4. The cold plate of claim 3, wherein the diverging surface is a chamfer or a cambered surface.

5. The cold plate of claim 1, further comprising a header having an inlet end connected to the body, the header having a header primary flow passage in communication with the plurality of heat exchange flow passages, the heat exchange medium exiting the heat exchange flow passages being able to enter the header primary flow passage with the header primary flow passage gradually decreasing in width along the inlet end of the header toward the outlet end of the header.

6. The cold plate of claim 5, wherein the flow collection member includes a flow collection surface disposed laterally of the flow collection primary channel, the flow collection surface extending toward a direction proximate a center of the flow collection member in a direction from an inlet end of the flow collection member toward an outlet end of the flow collection member.

7. The cold plate of claim 6, wherein the collection face is a beveled or curved face.

8. The cold plate of claim 1, further comprising a flow guide for flowing the heat exchange medium within the flow guide in a direction of a width of the body, the flow guide coupled to the body, the flow guide having a width that gradually decreases in a direction from an end of the flow guide coupled to the body toward an end of the flow guide distal from the body.

9. The cold plate according to any one of claims 1 to 8, wherein the blocking piece is sheet-shaped, and covers openings at both ends of the heat exchange flow channel to close the heat exchange flow channel.

10. A battery module comprising the cold plate of any one of claims 1 to 9.