CN210296470U

CN210296470U - Power battery module unit with water cooling plate fixed on side plate and power battery pack

Info

Publication number: CN210296470U
Application number: CN201921665217.9U
Authority: CN
Inventors: 王珏; 刘建华; 任荣彬; 曲凡多
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-04-10
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to a power battery makes the field, discloses a power battery module unit and power battery package of fixed water-cooling board of curb plate, and battery module wherein is equipped with water-cooling board (400) including piling up electric core (210), the bottom of piling up electric core, and the outside of piling up electric core is equipped with end plate (201) and curb plate (202) respectively, and the preceding, the rear end of curb plate are fixed with the end plate cladding, and the bottom of curb plate is fixed with the water-cooling board cladding. The utility model discloses a preceding, the back both ends of curb plate are fixed with the end plate cladding, and a side through the curb plate is fixed with the water-cooling plate cladding simultaneously, simple structure compactness, reduce cost.

Description

Power battery module unit with water cooling plate fixed on side plate and power battery pack

Technical Field

The utility model relates to a power battery makes the field, specifically relates to power battery module unit and power battery package of the fixed water-cooling board of curb plate.

Background

In order to enable the power battery pack to obtain a good heat dissipation effect in a high-temperature working environment and work at a proper temperature, so that the power battery pack can work in an optimal state. Generally, a frame is arranged around the stacked battery cells constituting the battery module, and the frame is composed of four plate bodies connected with each other, and the connection between the plate bodies is not tight because no other additional connecting structure exists. In addition, when adopting the battery module to make power battery package, in order to solve the fixed problem of water-cooling board to solve the problem of water-cooling board and the equipotential of the shell body of power battery package, can increase the support bubble cotton in the bottom of water-cooling board, however, support the cotton not only occupation space that not only occupies greatly of bubble, bubble cotton can take place ageing along with the increase of live time moreover, make its holding power reduce gradually and uncontrollable, the cost of power battery package has increased relatively.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the fixed problem of the module frame that prior art exists, providing the power battery module unit and the power battery package of the fixed water-cooling board of curb plate, it is fixed with the end plate cladding through preceding, the back both ends of curb plate, and a side through the curb plate is fixed the water-cooling board cladding simultaneously, and simple structure is compact.

In order to realize the above object, the utility model provides a power battery module unit of fixed water-cooling board of curb plate on the one hand, including piling up electric core, the bottom of piling up electric core is equipped with the water-cooling board, the outside of piling up electric core is equipped with end plate and curb plate respectively, the preceding, back both ends of curb plate will the end plate cladding is fixed, the bottom of curb plate will the water-cooling board cladding is fixed.

Preferably, the surface of the water-cooling plate facing the stacked battery cells is covered with a heat-conducting adhesive layer.

Preferably, the side plate includes a body, and the side plate extends along the length direction of the body at the two end edges of the body and bends toward the stacked battery cells to form a first wrapping end; the first cladding end is fixed on the outer side of the end plate in a cladding mode.

Preferably, the body is in a length direction, and a bottom edge of the body extends and bends towards the stacked battery cells to form a second coating end; and the second coating end is coated and fixed on the bottom surface of the water cooling plate.

Preferably, the second coating end is continuously disposed in a length direction of the body.

Preferably, the length of the second coating end is less than the length of the body.

Preferably, be located pile up before the electric core, back both sides be equipped with the high-pressure output base on the end plate respectively, be equipped with the protective cover on the high-pressure output base.

Preferably, the water cooling plate is convexly provided with a water cooling assembly, and the water cooling assembly is positioned on the outer side of the end plate.

Preferably, the water cooling assembly comprises a water inlet column and a water outlet column which are connected with a circulating water channel inside the water cooling plate.

The utility model discloses the second aspect provides a power battery package, be in including casing, last casing and setting down battery module in the accommodation space that casing and last casing formed down, including a plurality of as above of interconnect in the battery module the power battery module unit of the fixed water-cooling board of curb plate.

Through above-mentioned technical scheme, it is fixed with the end plate cladding through preceding, the back both ends of curb plate, and it is fixed with the cladding of water-cooling plate simultaneously through a side end of curb plate, simple structure is compact.

Drawings

Fig. 1 is a schematic view of an overall structure of a power battery module unit with a water-cooled plate fixed to a side plate according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a schematic view of a side plate structure in an embodiment of the present invention;

fig. 4 is a schematic view of an overall structure of a power battery pack according to an embodiment of the present invention.

Description of the reference numerals

100 lower casing 200 battery module 201 end plate 2011 high pressure output base 2012 protective cover 202 side plate 2021 body 2022 first coating end 2023 second coating end 210 stacked cell 220 upper cover 300 casing 400 water-cooling plate 410 heat conductive adhesive layer 420 water inlet column 430 water outlet column

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.

As shown in fig. 1 and combined with fig. 2, the utility model provides a battery module unit of fixed water-cooling board of curb plate, establish including piling up electric core 210 and lid pile up upper cover 220 on the electric core 210, the bottom of piling up electric core 210 is equipped with water-cooling board 400 integratively, the outside of piling up electric core 210 is equipped with end plate 201 and curb plate 202 respectively, the preceding, back both ends of curb plate 202 will the end plate 201 cladding is fixed, the bottom of curb plate 202 will the water-cooling board 400 cladding is fixed. In order to effectively arrange the water-cooling plate 400 and ensure that the stacked battery cells 210 effectively dissipate heat and keep warm in different working temperature environments, the surface of the water-cooling plate 400 facing the stacked battery cells 210 is covered with a heat-conducting adhesive layer 410.

As shown in fig. 3 in combination with fig. 1 and fig. 2, the side plate 202 includes a body 2021, which extends along the length direction of the body 2021 at the two end edges of the body 2021 and is bent toward the stacked battery cells 210 to form a first wrapping end 2022; the first wrapping end 2022 is wrapped and fixed on the outer side of the end plate 201. In the length direction of the body 2021, the bottom edge of the body 2021 extends and bends toward the stacked battery cells 210 to form a second wrapping end 2023; the second wrapping end 2023 is wrapped and fixed on the bottom surface of the water cooling plate 400. In order to save materials while ensuring stable connection, the second wrapping end 2023 may be provided with various structures, for example, it may be continuously provided in the length direction of the body 2021 as shown in fig. 3, or may be intermittently provided at intervals in the length direction of the body 2021, as long as it is ensured that sufficient strength can support the water-cooling plate 400. In addition, in order to facilitate the fixing of the battery module 200 to form a power battery pack, the second covering end 2023 does not interfere with other components in the power battery pack, the length of the second covering end 2023 is smaller than the length of the body 2021, and a gap is left at both ends of the body 2021 in the length direction.

As shown in fig. 1 and fig. 2 in combination with fig. 3, the assembly process of the present invention is as follows:

attaching the end plates 201 to the front side and the rear side of the stacked cell 210, simultaneously gluing the water-cooling plate 400 to the bottom surface of the stacked cell 210 through the heat-conducting glue layer 410 laid on the bottom surface of the stacked cell 210, installing the side plates 202 from the two sides of the stacked cell 210, respectively coating the left side and the right side of the front end plate 201 and the right side and the left side of the rear end plate 201 with the first coating ends 2022 bent from the left side and the right side of the side plates 202, and welding the end plates 201; in the length direction of the side plate 202, the second wrapping end 2023 extending toward the edge of one side of the water-cooling plate 400 and bending toward the stacked battery cells 210 wraps and fixes the water-cooling plate 400 from the bottom surface thereof, and the second wrapping end 2023 performs limiting support on the water-cooling plate 400.

It should be noted that the thermal conductive adhesive layer 410 laid between the stacked battery cells 210 and the water cooling plate 400 has good thermal conductivity and certain structural strength, and can effectively absorb assembly tolerance of the stacked battery cells 210 after assembly, improve good thermal conductivity and enhance structural support to some extent.

As shown in fig. 1 and fig. 2, high voltage output bases 2011 are respectively disposed on the end plates 201 at the front and rear sides of the stacked battery cell 210, and a protective cover 2012 is disposed on the high voltage output bases 2011. In addition, the water cooling plate 400 is composed of a water cooling plate upper plate and a water cooling plate lower plate, wherein the water cooling plate upper plate is a flat plate, the water cooling plate lower plate is a stamped plate, and the two plates are welded together to form the circulating water channel. The water cooling plate 400 is further convexly provided with a water cooling assembly, and the water cooling assembly is located on the outer side of the end plate 201. The water-cooling assembly comprises a water inlet column 420 and a water outlet column 430 which are connected with a circulating water channel inside the water-cooling plate. Since the specific structure of the water cooling plate 400 is not the key point to be protected by the present invention, it is not described herein again.

As shown in fig. 4, the present invention further provides a power battery pack, which includes a lower casing 100, an upper casing 300 and a battery module 200 disposed in the accommodating space formed by the lower casing 100 and the upper casing 300, wherein the battery module 200 includes a plurality of mutually connected power battery module units with water-cooling plates fixed by side plates.

To sum up, the utility model discloses an install the water-cooling board in the bottom of battery module, realized that water-cooling board and battery module are integrated, through the fixed mode of curb plate cladding, on the curb plate provides the basis of enough supports for the water-cooling board bottom surface, solved the water-cooling board and piled up electric core laminating problem and water-cooling board equipotential problem, saved the support bubble cotton among the prior art moreover, the cost is reduced on the basis of simplifying the structure.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical concept scope of the present invention, it can be right to the technical solution of the present invention perform a plurality of simple modifications, for example, the continuous long structure of the second covering end in the above embodiment can be changed into a plurality of parts arranged at intervals. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The utility model provides a power battery module unit of fixed water-cooling board of curb plate, is including piling up electric core (210) its characterized in that, the bottom of piling up electric core (210) is equipped with water-cooling board (400), the outside of piling up electric core (210) is equipped with end plate (201) and curb plate (202) respectively, preceding, back both ends of curb plate (202) will end plate (201) cladding is fixed, the bottom of curb plate (202) will water-cooling board (400) cladding is fixed.

2. The power battery module unit with the water cooling plate fixed by the side plates as recited in claim 1, wherein the surface of the water cooling plate (400) facing the stacked electric cores (210) is coated with a heat conducting adhesive layer (410).

3. The power battery module unit with the side plate fixing the water cooling plate as recited in claim 2, wherein the side plate (202) comprises a body (2021), and the body (2021) extends along the length direction of the body (2021) at the two end edges of the body (2021) and is bent towards the stacked battery cells (210) to form a first wrapping end (2022);

the first wrapping end (2022) is wrapped and fixed on the outer side of the end plate (201).

4. The side-plate-fixed water-cooled plate power battery module unit as claimed in claim 3, wherein the body (2021) is lengthwise, and a bottom edge of the body (2021) extends and is bent towards the stacked cells (210) to form a second covered end (2023);

the second coating end (2023) is coated and fixed on the bottom surface of the water cooling plate (400).

5. The side plate fixed water cold plate power battery module unit as recited in claim 4, wherein the second coating end (2023) is continuously disposed in the length direction of the body (2021).

6. The side plate fixed water cold plate power battery module unit of claim 5, wherein the length of the second cladding end (2023) is less than the length of the body (2021).

7. The power battery module unit with side plates fixing a water cooling plate as claimed in claim 2, wherein the end plates (201) at the front and rear sides of the stacked electric cores (210) are respectively provided with a high voltage output base (2011), and the high voltage output base (2011) is provided with a protective cover (2012).

8. The side plate water-cooled plate power battery module unit as claimed in claim 1, wherein a water cooling component is arranged on the water-cooled plate (400) in a protruding mode and located on the outer side of the end plate (201).

9. The side-plate-fixed water-cooled plate power battery module unit according to claim 8, wherein the water-cooled assembly comprises a water inlet column (420) and a water outlet column (430) connected with a circulating water channel inside the water-cooled plate (400).

10. A power battery pack comprising a lower case (100), an upper case (300), and a battery module (200) disposed in a receiving space formed by the lower case (100) and the upper case (300), wherein the battery module comprises a plurality of power battery module units of the side plate-fixed water-cooled plate of any one of claims 1 to 9 connected to each other.