CN210956914U

CN210956914U - Cooling plate and battery module

Info

Publication number: CN210956914U
Application number: CN201921714159.4U
Authority: CN
Inventors: 王志强
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-07-07
Anticipated expiration: 2029-10-14

Abstract

The utility model provides a cooling plate and battery module, this cooling plate includes: the cooling main plate comprises a first end and a second end which are arranged oppositely, and a plurality of cold flow channels extending from the first end to the second end; the two water pipe joints are respectively arranged at the first end and the second end of the cooling main plate; and the flow distribution device is arranged at the first end and/or the second end of the cooling main board, a flow distribution part corresponding to the cold flow channel is arranged at the flow distribution end of the flow distribution device, and the flow guide end of the flow distribution device is connected with the water pipe joint. Through the setting of this application can adjust liquid (water) flow for the whole liquid cooling evenly distributed of cooling plate reaches the even effect of heat dissipation.

Description

Cooling plate and battery module

Technical Field

The utility model relates to a battery module technical field, concretely relates to cooling plate and battery module.

Background

The cooling system is widely used in various industries to dissipate heat of heat generating components, and the battery module generates a large amount of heat during operation, so that the battery module is usually required to be provided with a cooling system (such as a cooling plate) to dissipate heat of the battery. At present, the cooling plate welded by integral brazing is mostly used at the bottom of a battery module and occupies the longitudinal height of a power battery assembly. The stamping plate flow channel is complex to form, the stamping die is high in cost, and the flatness of the cooling plate after forming is poor. The harmonica tubular cooling plate has thin tube wall, weak structural strength and easy deformation. During the use, the bottom needs spring or silica gel pad to be used for supporting. The internal flow channel of the vertically arranged cooling plate is simple, and the contact area of the cooling liquid and the cold plate is small, namely the heat dissipation area is small.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cooling plate and battery module to prior art's above-mentioned defect.

The purpose of the utility model can be realized by the following technical measures:

the utility model provides a cooling plate, the cooling plate includes:

the cooling main plate comprises a first end and a second end which are arranged oppositely, and a plurality of cold flow channels extending from the first end to the second end;

the two water pipe joints are respectively arranged at the first end and the second end of the cooling main plate;

the flow distribution device is arranged at the first end and/or the second end of the cooling main board, a flow distribution part corresponding to the cold flow channel is arranged at the flow distribution end of the flow distribution device, and the flow guide end of the flow distribution device is connected with the water pipe joint.

Furthermore, the flow distribution part is a plug, and the size of the plug close to the water pipe connector of the flow distribution device is larger than that of the plug far away from the water pipe connector.

Further, the flow distribution part is a flow distribution hole, and the area of the flow distribution hole of the flow distribution device close to the water pipe joint is smaller than that of the flow distribution hole far away from the water pipe joint.

Furthermore, the drainage end of the flow distributor is provided with a groove, and the water pipe joint is arranged in the groove.

Furthermore, the cooling main board comprises a first board body, a fin unit and a second board body which are sequentially connected, the fin unit comprises a plurality of fins formed by continuously bending a metal sheet, and a cold flow channel is formed between every two adjacent fins.

Further, the cross section of the cold flow channel is V-shaped, or the cross section of the cold flow channel is U-shaped.

Furthermore, the top of the cooling main board is provided with a buckle.

The utility model also provides a battery module, battery module includes at least two sets of horizontal battery package that sets up side by side, locates adjacently the battery package between as above the cooling plate with locate protective housing around the battery package, the battery package is including horizontal a plurality of cuboid electricity cores of placing and vertical piling up.

Furthermore, the protective housing comprises an upper cover body arranged at the top end of the battery pack, a lower cover body arranged at the bottom of the battery pack and two electrode protective covers arranged at the electrode ends of the battery pack, the upper cover body, the lower cover body and the two electrode protective covers form an accommodating space for accommodating the battery pack and the cooling plate, and a clamping groove matched with the clamping buckle of the cooling plate is formed in the top of the upper cover body.

Furthermore, the electrode protection cover is provided with a through hole for the water pipe joint to pass through.

The beneficial effects of the utility model reside in that a cooling plate and battery module are provided, this cooling plate includes: the cooling main plate comprises a first end and a second end which are arranged oppositely, and a plurality of cold flow channels extending from the first end to the second end; the two water pipe joints are respectively arranged at the first end and the second end of the cooling main plate; and the flow distribution device is arranged at the first end and/or the second end of the cooling main board, a flow distribution part corresponding to the cold flow channel is arranged at the flow distribution end of the flow distribution device, and the flow guide end of the flow distribution device is connected with the water pipe joint. Through the setting of this application can adjust liquid (water) flow for the whole liquid cooling evenly distributed of cooling plate reaches the even effect of heat dissipation.

Drawings

Fig. 1 is a schematic structural diagram of a cooling plate according to an embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of a cooling plate according to an embodiment of the present invention.

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

Fig. 4 is a first structural schematic diagram of a cross section E of a fin unit in a cooling plate according to an embodiment of the present invention.

Fig. 5 is a second structural schematic diagram of a cross section E of a fin unit in the cooling plate according to the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a flow distribution device in a cooling plate according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of the cooperation of the flow distribution device and the fin unit in the cooling plate according to the embodiment of the present invention.

Fig. 8 is an exploded schematic view of a battery module according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to make the description of the present disclosure more complete and complete, the following description is given for illustrative purposes with respect to the embodiments and specific examples of the present invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.

Referring to fig. 1-7, schematic structural diagrams of cooling plates according to embodiments of the present invention are shown. Fig. 1 shows a schematic structural view of the cooling plate, and fig. 2 shows a partial schematic structural view of the cooling plate. The cooling plate 1 includes: a cooling main plate 100 including a first end a and a second end B disposed opposite to each other, and a plurality of cold flow channels (

cold flow channels

111 and 112 as shown) extending from the first end a to the second end B; two

water pipe joints

200 and 300 respectively provided at the first end a and the second end B of the cooling main plate 100;

flow distribution devices

400 and 500 arranged at the first end a and the second end B of the cooling main plate 100, a flow distribution member 420 corresponding to the cold flow channel is arranged at the flow distribution end D of the flow distribution device 400, and a flow guide end C of the flow distribution device 400 is connected with the water pipe joint 200.

Specifically, the

water pipe connectors

200 and 300 can be used for water inlet and water outlet, wherein one water inlet and the other water outlet correspond to each other. The water pipe joint is not distinguished from the inlet and the outlet clearly, so that the universality of the water plate is improved, and the risk of reverse assembly of the water inlet and the water outlet during assembly is avoided. If water is supplied from the water pipe connector 200, water is discharged from the water pipe connector 300. When water flows through the flow distribution device 400, the water flows are connected from the drainage end C (the end connected with the water pipe connector 200), flows out from the diversion end D, and flows through the diversion end D, the water flows are divided into a plurality of water flows with uniform flow by the diversion effect of the flow distribution piece 420, the water flows flow into the cooling main board 100 connected with the diversion end D, the cooling main board 100 is provided with a plurality of cold flow channels (

cold flow channels

111 and 112 shown in the figure) for receiving the corresponding water flows, the cold flow channels penetrate the water flows from the first end a to the second end B of the cooling main board 100, and the water flows out from the water pipe connector 300 located at the second end B. The flow distribution device 500 at the second end may or may not be provided, and when the flow distribution device 500 is provided, the whole cooling plate 1 may not be divided into the water inlet and outlet directions. Is more convenient to use when being assembled into a battery module.

Referring to fig. 3-5, fig. 3 is a schematic structural diagram of a cooling main board in a cooling plate according to an embodiment of the present invention. 4-5, cross-sectional structural schematic diagrams of the cooling flow passages in the cooling plate are shown. The cooling main plate 100 comprises a first plate body 120, a fin unit 110 and a second plate body 130 which are connected in sequence, wherein the fin unit 110 comprises a plurality of

fins

1101 and 1104 which are formed by continuously bending a metal thin plate, cold flow channels are formed between two adjacent fins, such as the cold flow channel 111 formed between the

fins

1101 and 1102 and the cold flow channel 112 formed between the

fins

1103 and 1104. The cross section of the cold flow channel can be in various shapes, fig. 4 is a cross section first structure schematic diagram of the cold flow channel, and the cross section E of the cold flow channel 111 is in a U shape. Fig. 5 is a cross-sectional second structural diagram of the cold flow channel, and the cross-section E of the cold flow channel 112 is V-shaped.

Specifically, the first plate body 120 and the second plate body 130 are respectively disposed on two opposite sides of the fin unit 110, so that the whole cooling main plate 100 forms a plurality of continuous closed cold flow channels on the two sides, the two sides of the cooling main plate 100 can both perform a cooling function, and the cooling area of the cooling main plate 100 is increased. Since the cold flow channels in the entire cooling main plate 100 are formed by bending a thin metal plate, light aluminum can be used to make the entire cooling main plate lighter.

Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of a flow distribution device in a cooling plate according to an embodiment of the present invention. Fig. 7 is a schematic structural diagram of the cooperation of the flow distribution device and the fin unit in the cooling plate according to the embodiment of the present invention. The drainage end C of the flow distribution device 400 is provided with a groove 410, and the water pipe joint 200 is arranged in the groove 410. The distribution end D is provided with a plurality of flow distributors 420, each corresponding to a cold flow channel of one fin unit 110. When flow distribution member 420 is a plug, as illustrated by

plugs

4201 and 4202, plug 4201 of the flow distribution device closer to the water connection is larger in size than plug 4202 further from the water connection.

Specifically, the flow distribution members of the flow distribution device 400 are provided in one-to-one correspondence with the cold flow passages. For example, flow distribution member 420 can be a plug, such as

plugs

4201 and 4202 shown, wherein, since the water connections are connected to the flow distribution device, at the diversion end, the portion of water near the water connections is faster and the portion of water far from the water connections is slower, and to ensure that the flow of each split stream is uniform, the larger the size of plug 4201 closer to the water connections and the smaller the size of plug 4202 farther from the water connections, the more uniform the amount of water flowing into each cold flow channel of the main cooling plate, the more uniform the flow of water across the cold plates, and the uniform the heat dissipation. Alternatively, the flow distributing member 420 may be a flow distributing hole from which water flows into the cold flow pipe, and the area of the flow distributing hole of the flow distributing device near the water pipe joint is smaller than the area of the flow distributing hole far from the water pipe joint.

In order to facilitate the assembly of the cooling plate 1, the cooling plate is fastened. Referring to fig. 1, the top of the cooling main board 100 may further be provided with

fasteners

140 and 150. So that the equipment which needs the cooling plate 1 only needs to be provided with the corresponding clamping holes.

The utility model also provides a battery model, please refer to fig. 8, and fig. 8 is the explosion structure diagram of the battery module of the embodiment of the present invention. The battery module includes at least two sets of

battery package

2 and 3 that transversely set up side by side, locate cooling plate 1 between

adjacent battery package

2 and 3 and locate the protective housing around the battery package, and battery package 2 includes that the level is placed and a plurality of cuboid electric cores 21 that vertically pile up, and is concrete, and this cuboid electric core 21 is soft package or square crust electric core. The protective casing comprises an upper cover body 41 arranged at the top end of the battery pack, a lower cover body 42 arranged at the bottom of the battery pack and two electrode protection covers 43 and 44 arranged at an electrode end d of the battery pack, the upper cover body 41, the lower cover body 42 and the two electrode protection covers 43 and 44 form an accommodating space for accommodating the battery packs 2 and 3 and the cooling plate 1, and the top of the upper cover body 41 is provided with clamping grooves a and b matched with the cooling plate in a clamping mode. The electrode protecting covers 43 and 44 are provided with through holes c through which water supply nipples pass.

The utility model discloses a cooling plate is integrated between two inside battery packages of battery module, highly does not have the influence to whole battery module. The cooling plate is integrated among the module, and two sets of electric cores are arranged to the cooling plate both sides, and the cooling plate both sides carry out the heat exchange with electric core simultaneously, have improved cooling plate utilization ratio and battery module integrated level. The cooling plate is vertically arranged, and the flow distribution part in the flow distribution device is adopted, so that the flow distribution of the flow channel is uniform, the uneven heat dissipation of the electric core from top to bottom is avoided, the temperature difference between the electric cores is larger, and the consistency of the performance of the electric core is reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A cooling plate, comprising:

2. The cooling plate of claim 1, wherein the flow distribution member is a plug, and wherein the plug of the flow distribution device is larger in size closer to the water connection than farther from the water connection.

3. The cooling plate of claim 1, wherein the flow distribution member is a flow distribution hole, and the flow distribution hole of the flow distribution device near the water connection is smaller in area than the flow distribution hole far from the water connection.

4. A cooling plate according to claim 1 or 2, wherein the flow distributing means is provided with a groove at the flow leading end, and the water pipe connection is provided in the groove.

5. The cooling plate as claimed in claim 1, wherein the cooling main plate comprises a first plate body, a fin unit and a second plate body which are connected in sequence, the fin unit comprises a plurality of fins formed by continuously bending a thin metal plate, and the cold flow channel is formed between two adjacent fins.

6. The cooling plate of claim 5, wherein the cross section of the cold flow channel is V-shaped or the cross section of the cold flow channel is U-shaped.

7. The cooling plate of claim 1, wherein the top of the cooling main plate is provided with a snap.

8. A battery module, comprising at least two sets of battery packs arranged laterally side by side, a cooling plate according to any one of claims 1 to 7 disposed between the adjacent battery packs, and a protective casing disposed around the battery packs, wherein the battery packs comprise a plurality of rectangular parallelepiped cells horizontally disposed and vertically stacked.

9. The battery module according to claim 8, wherein the protective housing comprises an upper cover disposed at the top of the battery pack, a lower cover disposed at the bottom of the battery pack, and two electrode protection covers disposed at the electrode ends of the battery pack, the upper cover, the lower cover, and the two electrode protection covers form a receiving space for receiving the battery pack and the cooling plate, and a fastening groove for fastening the cooling plate is disposed at the top of the upper cover.

10. The battery module according to claim 9, wherein the electrode protective covers are provided with through-holes through which water pipe connections pass.