CN210692719U - Battery cell unit and battery module thereof - Google Patents

Abstract

The utility model provides an electricity core unit and battery module thereof. This electric core unit, including an at least electric core and liquid cold plate, the liquid cold plate includes base member, inlet tube and outlet pipe, form the coolant liquid runner in the base member, the import of coolant liquid runner with the inlet tube is linked together, the export of coolant liquid runner with the outlet pipe is linked together, the side of base member with the side of electric core is laminated mutually. Above-mentioned electric core unit and battery module thereof with electric core and liquid cooling board direct contact and dispel the heat, and the heat that the electric core produced directly transmits to carry out the heat transfer to the liquid cooling board, and the heat exchange efficiency of liquid cooling board is higher than the heat exchange efficiency of the heat dissipation aluminum sheet among the prior art, has effectively reduced the thermal resistance, has improved heat exchange efficiency.

Description

Battery cell unit and battery module thereof

Technical Field

The utility model relates to an electricity core unit.

The utility model discloses still relate to a battery module with this electric core unit.

Background

Laminate polymer battery module in the existing market generally comprises parts such as laminate polymer core, front and back end plate, electric core frame, shock attenuation bubble cotton, heat dissipation aluminum sheet, blotter, utmost point ear fixed plate (containing connection aluminum sheet, PCB data acquisition board, utmost point post, nested nut).

The heat dissipation mode of the electric core of the battery module in the existing market is usually that the heat generated by the electric core is taken out of the battery module through an external fan or a liquid cooling plate through a heat dissipation aluminum sheet attached to the electric core. Dispel the heat through the heat dissipation aluminum sheet, the heat dissipation condition receives the runner distribution influence of fan supply air duct or liquid cooling board, often can lead to the great problem of the difference in temperature between heat dissipation inequality, electric core and the electric core.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide an electricity core unit and battery module thereof.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides an electricity core unit, include:

at least one cell;

the liquid cooling plate comprises a base body, a water inlet pipe and a water outlet pipe, a cooling liquid flow channel is formed in the base body, an inlet of the cooling liquid flow channel is communicated with the water inlet pipe, an outlet of the cooling liquid flow channel is communicated with the water outlet pipe, and the side face of the base body is attached to the side face of the battery core.

Preferably, the number of the electric cores is two, and the liquid cooling plate is clamped between the two electric cores.

Preferably, the battery cell unit further includes a frame, an insertion groove is formed in the middle of the frame, a containing cavity for containing the battery cell is formed on a side surface of the frame, the liquid cooling plate is inserted into the insertion groove, and the battery cell is placed in the containing cavity.

Preferably, the inlet of the insertion groove forms a first limiting hole and a second limiting hole, the first limiting hole is matched with the water inlet pipe, and the second limiting hole is matched with the water outlet pipe.

Preferably, the frame is provided with a plurality of connecting holes, the connecting holes penetrate through the insertion groove from the side edge of the insertion groove, the liquid cooling plate is provided with a plurality of through holes penetrating through the base body, and the through holes correspond to the connecting holes one to one; the liquid cooling plate and the frame are fixed by penetrating through the through holes and the connecting holes.

Preferably, the frame is provided with a buckle and a clamping groove, the buckle is used for being connected with the clamping groove of the frame of the adjacent battery cell unit, and the clamping groove is used for being connected with the buckle of the frame of the adjacent battery cell unit.

Preferably, a notch is formed in the edge of the accommodating cavity of the frame, and the electrode of the battery cell extends out of the accommodating cavity from the notch.

Preferably, the battery cell unit further comprises compression foam, and the compression foam is attached to the side surface, away from the liquid cooling plate, of the battery cell.

Preferably, the base is made of a metallic material.

The utility model also provides a battery module, include:

the battery cell units are as described in the technical scheme above;

the main water inlet pipe is used for communicating the water inlet pipes of the plurality of battery cell units together;

and the main water outlet pipe is used for communicating the water outlet pipes of the plurality of battery cell units together.

The utility model discloses an actively advance the effect and lie in:

above-mentioned electric core unit and battery module thereof with electric core and liquid cooling board direct contact and dispel the heat, and the heat that the electric core produced directly transmits to carry out the heat transfer to the liquid cooling board, and the heat exchange efficiency of liquid cooling board is higher than the heat exchange efficiency of the heat dissipation aluminum sheet among the prior art, has effectively reduced the thermal resistance, has improved heat exchange efficiency.

Drawings

Fig. 1 is the structure diagram of the electric core unit of the present invention.

Fig. 2 is an exploded view of the cell unit shown in fig. 1.

Fig. 3 is a schematic structural view of a frame of the cell unit shown in fig. 1.

Fig. 4 is a schematic structural view of a liquid cooling plate of the cell unit shown in fig. 1.

Fig. 5 is a schematic structural diagram of the battery module according to the present invention.

Fig. 6 is a schematic structural view of the battery module shown in fig. 5 with the housing removed.

Description of the reference numerals

The cell structure comprises a cell unit 100, a cell 1, an electrode 11, a liquid cooling plate 2, a base body 21, a substrate 211, a water inlet pipe 22, a water outlet pipe 23, a through hole 24, a frame 3, an insertion groove 31, a first limiting hole 311, a second limiting hole 312, a containing cavity 32, a notch 321, a connecting hole 33, a buckle 34, a clamping groove 35 and compressed foam 4;

main inlet pipe 200, main outlet pipe 300, shell 400.

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, the present invention provides a battery cell unit 100, which includes two battery cells 1 and a liquid cooling plate 2, wherein the liquid cooling plate 2 is sandwiched between the two battery cells 1. As shown in fig. 2 and 4, the liquid cooling plate 2 includes a base body 21, a water inlet pipe 22 and a water outlet pipe 23, a cooling liquid flow passage is formed in the base body 21, an inlet of the cooling liquid flow passage is communicated with the water inlet pipe 22, an outlet of the cooling liquid flow passage is communicated with the water outlet pipe 23, and a side surface of the base body 21 is attached to a side surface of the battery cell 1. The base 21 may be composed of two substrates 211, and the cooling liquid channel is formed between the two substrates 211.

The cooling liquid enters the cooling liquid flow channel from the water inlet pipe 22 and flows out from the water outlet pipe 23, heat exchange is carried out between the matrix 21 and the electric core 1, and the cooling liquid brings out heat of the matrix 21.

The base body 21 may be made of a metallic material, preferably aluminum. A metal material, particularly aluminum, is a preferred heat conductive material, and can be used as the material for forming the base 21.

With electric core 1 and liquid cooling plate 2 direct contact and dispel the heat, the heat direct transfer that electric core 1 produced carries out the heat transfer to liquid cooling plate 2, the heat exchange efficiency of liquid cooling plate 2 is higher than the heat exchange efficiency of the heat dissipation aluminum sheet among the prior art. The liquid cooling plate 2 is used for heat exchange, so that the thermal resistance can be effectively reduced, and the heat exchange efficiency is improved.

The number of the battery cells 1 of the battery cell unit 100 may be two as shown in the present embodiment. The number of the battery cells 1 of the battery cell unit 100 may also be one or more; the position of the liquid cooling plate 2 contacting with the battery core 1 is set according to the heat exchange position required by the battery core 1.

As shown in fig. 3, the battery cell unit 100 further includes a frame 3, an insertion groove 31 is formed in the middle of the frame 3, a housing cavity 32 for housing the battery cell 1 is formed on the side surface of the frame 3, the liquid cooling plate 2 is inserted into the insertion groove 31, and the battery cell 1 is placed in the housing cavity 32. The frame 3 is used for limiting the relative positions of the liquid cooling plate 2 and the battery cell 1, so that the liquid cooling plate 2 and the battery cell 1 are placed and contacted according to the preset positions. The frame 3 may be made of plastic.

The inlet of the insertion slot 31 forms a first limiting hole 311 and a second limiting hole 312, the first limiting hole 311 is matched with the water inlet pipe 22, and the second limiting hole 312 is matched with the water outlet pipe 23. The first limiting hole 311 and the second limiting hole 312 are used for accommodating the water inlet pipe 22 and the water outlet pipe 23.

The edge of the accommodating cavity 32 of the frame 3 forms a notch 321, and the electrode 11 of the battery cell 1 protrudes from the notch 321 to the outside of the accommodating cavity 32.

As shown in fig. 2 and 3, the frame 3 is provided with a plurality of connecting holes 33, the connecting holes 33 penetrate through the insertion groove 31 from the side edge of the insertion groove 31, the liquid cooling plate 2 is provided with a plurality of through holes 24 penetrating through the base body 21, and the through holes 24 correspond to the connecting holes 33 one by one; the liquid cooling plate 2 and the frame 3 are fixed by the through hole 24 and the connection hole 33. The liquid cooling plate 2 and the frame 3 may be fixed by a connecting member passing through the through hole 24 and the connecting hole 33, or the through hole 24 and the connecting hole 33 may be connected by a hot-melt method.

As shown in fig. 1 to fig. 2, the battery cell unit 100 further includes compressed foam 4, and the compressed foam 4 is attached to a side surface of the battery cell 1 away from the liquid cooling plate 2. The foam 4 is compressed to isolate the battery cell 1 from the battery cells 1 of the adjacent battery cell units 100, so that the functions of shock absorption and heat insulation are achieved.

As shown in fig. 1 to 3, the frame 3 is provided with a buckle 34 and a slot 35, the buckle 34 is used for being connected with the slot 35 of the frame 3 of the adjacent battery cell unit 100, and the slot 35 is used for being connected with the buckle 34 of the frame 3 of the adjacent battery cell unit 100. And a plurality of battery cell units 100 connected through the buckles 34 and the card slots 35, as shown in fig. 6. With the above structure, a plurality of the cell units 100 can be compactly stacked together.

Fig. 5 to 6 show a battery module formed by a plurality of the above-described cell units 100. Fig. 6 is a schematic view illustrating an internal structure of the battery module shown in fig. 5 with the outer case 400 removed. When the battery module group uses a plurality of electric core units 100 to constitute, use main inlet tube 200 to communicate inlet tube 22 of a plurality of electric core units 100 together, use main outlet pipe 300 to communicate outlet pipe 23 of a plurality of electric core units 100 together.

The coolant flow channels of the plurality of cell units 100 are communicated by using the main water inlet pipe 200 and the main water outlet pipe 300, so that the temperature of the coolant in the liquid cooling plate 2 of the cell units 100 can be kept consistent. The parallel cooling mode effectively improves the heat dissipation environment of the battery cell units 100, so that the heat dissipation conditions of the battery cells 1 in the battery cell units 100 are basically kept consistent, and the temperature difference between the battery cells is reduced.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims (10)

1. A cell unit, comprising:

at least one cell;

the liquid cooling plate comprises a base body, a water inlet pipe and a water outlet pipe, a cooling liquid flow channel is formed in the base body, an inlet of the cooling liquid flow channel is communicated with the water inlet pipe, an outlet of the cooling liquid flow channel is communicated with the water outlet pipe, and the side face of the base body is attached to the side face of the battery core.

2. The cell unit of claim 1, wherein: the quantity of electricity core is two, the liquid cooling plate presss from both sides two between the electricity core.

3. The cell unit of claim 1 or 2, wherein: the battery cell unit further comprises a frame, an insertion groove is formed in the middle of the frame, a containing cavity for containing the battery cell is formed in the side face of the frame, the liquid cooling plate is inserted into the insertion groove, and the battery cell is placed in the containing cavity.

4. The cell unit of claim 3, wherein: the inlet of the insertion groove forms a first limiting hole and a second limiting hole, the first limiting hole is matched with the water inlet pipe, and the second limiting hole is matched with the water outlet pipe.

5. The cell unit of claim 3, wherein: the frame is provided with a plurality of connecting holes, the connecting holes penetrate through the insertion groove from the side edge of the insertion groove, the liquid cooling plate is provided with a plurality of through holes penetrating through the base body, and the through holes correspond to the connecting holes one to one; the liquid cooling plate and the frame are fixed by penetrating through the through holes and the connecting holes.

6. The cell unit of claim 3, wherein: the battery cell frame is characterized in that a buckle and a clamping groove are arranged on the frame, the buckle is used for being connected with the clamping groove of the frame of the adjacent battery cell unit, and the clamping groove is used for being connected with the buckle of the frame of the adjacent battery cell unit.

7. The cell unit of claim 3, wherein: the edge of the containing cavity of the frame forms a notch, and the electrode of the battery cell extends out of the containing cavity from the notch.

8. The cell unit of claim 1, wherein: the battery cell unit further comprises compression foam, and the compression foam is attached to the side face, far away from the liquid cooling plate, of the battery cell.

9. The cell unit of claim 1, wherein: the substrate is made of a metal material.

10. A battery module, comprising:

a number of cell units as claimed in any one of claims 1 to 9;

the main water inlet pipe is used for communicating the water inlet pipes of the plurality of battery cell units together;

and the main water outlet pipe is used for communicating the water outlet pipes of the plurality of battery cell units together.

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