CN217589090U

CN217589090U - Battery module

Info

Publication number: CN217589090U
Application number: CN202123230124.3U
Authority: CN
Inventors: 张健; 邓雪峰
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-10-14
Anticipated expiration: 2031-12-21

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery module, which comprises an electric core, a contact plate and a connecting plate, wherein a cavity is arranged on the electric core; a first liquid passing channel is arranged in the contact plate, so that liquid can flow through the first liquid passing channel; the contact plate is the contained angle setting on the connecting plate, connects electric core in the connecting plate so that the contact plate can insert the cavity, the area of contact of increase electric core and contact plate. The utility model provides a battery module, through inserting the contact plate in the cavity of electric core, increased the area of contact of electric core and contact, improved heat exchange efficiency, the heat is at the quick transmission between electric core and contact plate, has strengthened the thermal management ability of electric core. When the contact plate is a liquid cooling plate, the first liquid passing channel passes through the cooled liquid, so that the cooling rate of the battery core is improved; when the contact plate is the hot plate, the heated liquid flows through the first liquid passing channel, so that the heating rate of the battery core is improved.

Description

Battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module.

Background

The battery module generally comprises a battery shell and a battery core, wherein the battery shell is formed by surrounding a single-layer metal plate, a plurality of battery cores are stacked and fixed and then are contained in the battery shell, and the battery shell plays roles of containing and supporting the stacked battery cores. In the working process of the battery module, the battery core can generate heat, and if the heat cannot be dissipated timely, the service life of the battery module can be influenced; in addition, in order to ensure that the battery cell can normally work at a lower temperature, the battery cell needs to be heated sometimes.

The main mode of the liquid cooling/heating of present square shell electricity core is to place the contact plate in battery bottom or side, and the contact plate can be liquid cooling board or hot plate, and the heat transfer area of current battery module electricity core and liquid cooling board/hot plate contact is little, and heat exchange efficiency is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module improves the area of contact of electric core and contact plate, improves the heat exchange efficiency of electric core.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery module, comprising:

the battery comprises a battery cell, wherein a cavity is arranged on the battery cell;

the contact plate is internally provided with a first liquid passing channel;

the battery cell is connected with the connecting plate so that the contact plate can be inserted into the cavity.

Preferably, the contact plate is provided with a plurality of contact plates, the plurality of contact plates are arranged on the connecting plate, the plurality of battery cells are connected to the connecting plate, the plurality of contact plates correspond to the plurality of battery cells one to one, and each contact plate is inserted into the cavity of each battery cell.

Preferably, the plurality of contact plates are uniformly arranged on the connection plate.

Preferably, the cavity is of a cuboid structure, the contact plate is of a cuboid structure, and the outer wall of the contact plate is tightly attached to the inner wall of the cavity.

Preferably, the battery module further comprises a liquid inlet interface and a liquid outlet interface, and the liquid inlet interface and the liquid outlet interface are both communicated with the first liquid passing channel.

Preferably, a second liquid passing channel is arranged in the connecting plate, and the liquid inlet interface and the liquid outlet interface are communicated with the first liquid passing channel through the second liquid passing channel.

Preferably, the first liquid passing channel comprises a transverse channel and a vertical channel communicated with the transverse channel, and the second liquid passing channel is communicated with the vertical channel.

Preferably, the battery core and the connecting plate are connected by gluing.

Preferably, the battery cell is of a cuboid structure, a groove is formed in the bottom wall of the battery cell, the groove extends towards the direction of the top wall close to the battery cell to form the cavity, and the bottom wall is connected to the connecting plate.

Preferably, the battery module further comprises a positive electrode pole and a negative electrode pole on the top wall of the battery core, a positive plate and a negative plate arranged inside the battery core, and a diaphragm, wherein the diaphragm is wrapped outside the positive plate, the positive electrode pole is connected to the positive plate, and the negative electrode pole is connected to the negative plate.

Preferably, the battery module further comprises an insulating sheet arranged on the battery core, and the positive pole column and the negative pole column penetrate through the insulating sheet.

Preferably, the battery cell comprises a mounting portion, and a blue film is arranged on the mounting portion.

Preferably, the contact plate is vertically disposed on the connection plate.

The utility model has the advantages that:

the utility model provides a battery module, through inserting the contact plate in the cavity of electric core, increased the area of contact of electric core and contact, improved heat exchange efficiency, the heat has strengthened the thermal management ability of electric core in the quick transmission between electric core and contact plate. When the contact plate is a liquid cooling plate, the cooled liquid flows through the first liquid passing channel, so that the cooling rate of the battery core is improved; when the contact plate is the hot plate, the heated liquid flows through the first liquid passing channel, so that the heating rate of the battery core is improved.

Drawings

Fig. 1 is a schematic structural diagram of connection of a battery cell, a contact plate and a connection plate provided in an embodiment of a battery module according to the present invention;

fig. 2 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram illustrating connection between a contact plate and a connection plate according to an embodiment of the present invention.

In the figure:

1. an electric core; 11. a cavity;

2. a contact plate; 21. a first liquid passing channel; 211. a transverse channel; 212. a vertical channel;

3. a connecting plate; 31. a second liquid passing channel;

4. a liquid inlet interface;

5. a liquid outlet interface;

6. a positive pole column;

7. a negative electrode post;

8. an insulating sheet;

9. a mounting portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

The main mode of the liquid cooling/heating of present square shell electric core is to place the contact plate in battery bottom or side, and the contact plate can be liquid cooling board or hot plate, and the heat transfer area of current battery module electric core and liquid cooling board/hot plate contact is little, and heat exchange efficiency is not high.

In order to solve the above technical problem, the present embodiment provides a battery module, as shown in fig. 1 to fig. 3, the battery module includes a battery cell 1, a contact plate 2 and a connection plate 3, and a cavity 11 is disposed on the battery cell 1; a first liquid passing channel 21 is arranged in the contact plate 2, so that liquid can flow through the first liquid passing channel; contact plate 2 is the contained angle setting on connecting plate 3, connects electric core 1 in connecting plate 3 so that contact plate 2 can insert cavity 11, increases electric core 1 and contact plate 2's area of contact. Specifically, the contact plate 2 may be a liquid-cooling plate or a heating plate, and when the contact plate 2 is a liquid-cooling plate, the cooled liquid flows through the first liquid-passing channel 21, and when the contact plate 2 is a heating plate, the heated liquid flows through the first liquid-passing channel 21.

The battery module that this embodiment provided, through insert contact plate 2 in electric core 1's cavity 11, increased the area of contact of electric core 1 with the contact, improved electric core 1's heat exchange efficiency, the heat has strengthened electric core 1's thermal management ability in the quick transmission between electric core 1 and contact plate 2. When the contact plate 2 is a liquid cooling plate, the first liquid passing channel 21 passes through the cooled liquid, so that the cooling rate of the battery cell 1 is increased; when the contact plate 2 is a heating plate, the heated liquid flows through the first liquid passing channel 21, so that the heating rate of the battery core 1 is increased.

Specifically, as shown in fig. 1 and fig. 2, the electric core 1 in this embodiment is a square electric core, the electric core 1 is of a rectangular structure, a groove is formed in a bottom wall of the electric core 1, and the groove extends toward a top wall of the electric core 1, so as to form a cavity 11, connect the bottom wall to the connecting plate 3, and fix the electric core 1. Design into partly hollow dysmorphism structure with electric core 1, extend to the middle part of electric core 1 from the bottom of electric core 1, contact plate 2 designs into bellied structure, and protruding structure cooperatees with special-shaped structure cavity position to improve the effective area of contact plate 2 and electric core 1. More specifically, the battery cell 1 and the connection plate 3 are connected by gluing.

Specifically, as shown in fig. 1 and 2, the groove extends to a direction close to the top wall of the battery cell 1 to form a cavity 11, the cavity 11 is of a cuboid structure, the contact plate 2 is of a cuboid structure, the outer wall of the contact plate 2 is tightly attached to the inner wall of the cavity 11, and the effect of cooling or heat transfer of the battery cell 1 is ensured.

Specifically, as shown in fig. 1 and fig. 2, the contact plate 2 is provided with a plurality of, the plurality of contact plates 2 are all provided on the connection plate 3, the electric core 1 is provided with a plurality of, the plurality of electric cores 1 are all connected to the connection plate 3, the plurality of contact plates 2 and the plurality of electric cores 1 are in one-to-one correspondence, and each contact plate 2 is inserted into the cavity 11 of each electric core 1, so that the cooling or heat transfer effect of each electric core 1 is ensured. In this embodiment, there are four battery cells 1 and four contact plates 2. It should be noted that each cell 1 is connected to the connecting plate 3 by gluing.

Specifically, the plurality of contact plates 2 are uniformly arranged on the connection plate 3, so that the plurality of battery cells 1 are uniformly distributed on the connection plate 3. More specifically, the angle between the contact plate 2 and the connection plate 3 is 90 °, and each contact plate 2 is vertically disposed on the connection plate 3. In other embodiments, the included angle between the contact plate 2 and the connection plate 3 may be any angle as long as it is ensured that the contact plate 2 can be inserted into the cavity 11 of the electrical core 1, and the outer wall of the contact plate 2 and the inner wall of the cavity 11 are tightly attached, for example, the included angle may also be 60 °, 70 °, or 80 °.

Further, as shown in fig. 2 and fig. 3, the battery module further includes a liquid inlet port 4 and a liquid outlet port 5 which are arranged on the connecting plate 3, and both the liquid inlet port 4 and the liquid outlet port 5 are communicated with the first liquid passing channel 21, so that cooled liquid or heated liquid can be introduced through the liquid inlet port 4. The liquid in the first liquid passing channel 21 can also flow out through the liquid outlet interface 5.

Specifically, as shown in fig. 2 and fig. 3, a second liquid passing channel 31 is provided in the connecting plate 3, and the liquid inlet port 4 and the liquid outlet port 5 are both communicated with the first liquid passing channel 21 through the second liquid passing channel 31. A second liquid passing channel 31 is arranged, and liquid flows into the first liquid passing channel 21 through the liquid inlet interface 4 and the second liquid passing channel 31 in sequence; or the liquid flows out through the first liquid passing channel 21, the second liquid passing channel 31 and the liquid outlet interface 5.

Specifically, as shown in fig. 2 and 3, the first liquid passing channel 21 includes a transverse channel 211 and a vertical channel 212 communicating with the transverse channel 211, and the second liquid passing channel 31 communicates with the vertical channel 212. In the present embodiment, three transverse channels 211 and two vertical channels 212 are provided, the three transverse channels 211 are sandwiched between the two vertical channels 212, and two ends of each transverse channel 211 are respectively communicated with the two vertical channels 212 (as shown in fig. 3). Set up a plurality of cross channels 211 and vertical passage 212, improved the effect of electric core 1 cooling or heat transfer. In the present embodiment, the transverse channel 211 and the vertical channel 212 are formed on the contact plate 2 by a drilling machine, and the transverse channel 211 and the vertical channel 212 are integrally formed, so that a special sealing assembly is not required to seal the communication part of the transverse channel 211 and the vertical channel 212. And a sealing sleeve is arranged at the position where the second liquid passing channel 31 is communicated with the vertical channel 212, and is sleeved outside the communication position of the second liquid passing channel 31 and the vertical channel 212 to seal and prevent liquid from flowing out.

Further, please refer back to fig. 1 and fig. 2, the battery module further includes a positive electrode post 6 and a negative electrode post 7 located on the top wall of the electric core 1, a positive plate and a negative plate arranged inside the electric core 1, and a diaphragm wrapping the diaphragm outside the positive plate to separate the positive plate and the negative plate, the negative plate is arranged on the inner wall of the electric core 1, the positive electrode post 6 is connected to the positive plate through a positive current collector, and the negative electrode post 7 is connected to the negative plate through a negative current collector.

Specifically, please refer back to fig. 1 and fig. 2, the battery module further includes an insulating sheet 8 disposed on the top wall of the electric core 1, the positive electrode post 6 and the negative electrode post 7 penetrate through the insulating sheet 8, the insulating sheet 8 not only plays an insulating role, but also plays a certain limiting role for the positive electrode post 6 and the negative electrode post 7.

Specifically, referring back to fig. 1 and fig. 2, the battery cell 1 includes a mounting portion 9, in this embodiment, the mounting portion 9 is a side surface of the battery cell 1 with the largest area, and a blue film is disposed on the mounting portion 9, so as to enhance an anti-corrosion effect of the battery module.

In the description of the present embodiments, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this embodiment, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery module, comprising:

the battery cell comprises a battery cell (1), wherein a cavity (11) is formed in the battery cell (1);

the liquid filter comprises a contact plate (2), wherein a first liquid passing channel (21) is arranged in the contact plate (2);

connecting plate (3), contact plate (2) are the contained angle setting and are in on connecting plate (3), electric core (1) connect in connecting plate (3) so that contact plate (2) can insert in cavity (11).

2. The battery module according to claim 1, wherein the contact plate (2) is provided in plurality, the plurality of contact plates (2) are provided on the connecting plate (3), the plurality of battery cells (1) are provided in plurality, the plurality of battery cells (1) are connected to the connecting plate (3), the plurality of contact plates (2) and the plurality of battery cells (1) are in one-to-one correspondence, and each contact plate (2) is inserted into the cavity (11) of each battery cell (1).

3. The battery module according to claim 2, characterized in that a plurality of the contact plates (2) are arranged uniformly on the connection plate (3).

4. The battery module according to claim 1, wherein the cavity (11) is a rectangular parallelepiped structure, the contact plate (2) is a rectangular parallelepiped structure, and the outer wall of the contact plate (2) is tightly attached to the inner wall of the cavity (11).

5. The battery module according to claim 1, wherein the battery module further comprises a liquid inlet port (4) and a liquid outlet port (5), and the liquid inlet port (4) and the liquid outlet port (5) are both communicated with the first liquid passing channel (21).

6. The battery module according to claim 5, wherein a second liquid passing channel (31) is arranged in the connecting plate (3), and the liquid inlet port (4) and the liquid outlet port (5) are both communicated with the first liquid passing channel (21) through the second liquid passing channel (31).

7. The battery module according to claim 6, wherein the first liquid passing channel (21) comprises a transverse channel (211) and a vertical channel (212) communicated with the transverse channel (211), and the second liquid passing channel (31) is communicated with the vertical channel (212).

8. The battery module according to claim 1, characterized in that the battery core (1) and the connecting plate (3) are adhesively connected.

9. The battery module according to claim 1, wherein the battery core (1) is a rectangular parallelepiped structure, a groove is formed in a bottom wall of the battery core (1), the groove extends towards a top wall of the battery core (1) to form the cavity (11), and the bottom wall is connected to the connecting plate (3).

10. The battery module according to claim 9, further comprising a positive electrode post (6) and a negative electrode post (7) on the top wall of the battery core (1), a positive electrode plate and a negative electrode plate arranged inside the battery core (1), and a diaphragm, wherein the diaphragm is wrapped outside the positive electrode plate, the positive electrode post (6) is connected to the positive electrode plate, and the negative electrode post (7) is connected to the negative electrode plate.