CN219626778U - Cell module - Google Patents

Abstract

An electric core module relates to the technical field of batteries. The battery cell module comprises a plurality of battery cells which are arranged side by side along a first direction, wherein any two adjacent battery cells are connected through a connecting structure, and the connecting structure is used for limiting the battery cells to move along the height direction; the connecting structure comprises a first connecting piece and a second connecting piece which are connected with each other, wherein the first connecting piece is arranged on one surface of one of the battery cells, and the second connecting piece is arranged on one surface of the other battery cell. The battery cell module can improve the problem of up-and-down jumping of the battery cell in the vertical direction, thereby improving the structural reliability of the battery cell module.

Description

Cell module

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery cell module.

Background

With the rapid progress of the development of science and technology, new energy industries mainly taking electric power are rapidly developed. The lithium battery has the advantages of high energy density, high output power, long charge and discharge life, no pollution, wide working range, small self discharge and the like, and becomes one of the core energy devices of the new energy industry, so that the safety of the whole power system is determined to a great extent.

When the lithium battery is applied to engineering machinery as an energy storage unit, the harsh running environment can cause the vibration intensity of the battery cell module in the battery box to be increased. If adjacent cells of the cell module only depend on friction force of contact surfaces to restrict the up-and-down jumping of the cells in the vertical direction, as the running time of the cell module increases, the cell module tends to generate phenomena such as broken tabs, off-welding of the tabs and the like, and even a sparking phenomenon occurs in severe cases, so that safety accidents occur. Accordingly, there is a need to improve a new cell module to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a battery cell module which can improve the problem of up-and-down jumping of a battery cell in the vertical direction, thereby improving the structural reliability of the battery cell module.

Embodiments of the present utility model are implemented as follows:

in one aspect of the utility model, a battery cell module is provided, the battery cell module comprises a plurality of battery cells arranged side by side along a first direction, wherein any two adjacent battery cells are connected through a connecting structure, and the connecting structure is used for limiting the battery cells to move along the height direction of the battery cells; the connecting structure comprises a first connecting piece and a second connecting piece which are connected with each other, wherein the first connecting piece is arranged on one surface of one of the battery cells, and the second connecting piece is arranged on one surface of the other battery cell. The battery cell module can improve the problem of up-and-down jumping of the battery cell in the vertical direction, thereby improving the structural reliability of the battery cell module.

Optionally, the plurality of electric cores include a plurality of first electric cores and a plurality of second electric cores, and the plurality of first electric cores and the plurality of second electric cores are alternately arranged; the first connecting piece is arranged on one surface of the first battery cell, which is used for being matched with the second battery cell, and the second connecting piece is arranged on one surface of the second battery cell, which is used for being matched with the first battery cell.

Optionally, the opposite sides of the first battery cell along the first direction are respectively provided with a first connecting piece, and the opposite sides of the second battery cell along the first direction are respectively provided with a second connecting piece.

Optionally, the first connecting piece and the second connecting piece are connected in a plug-in manner along a second direction, and the second direction is perpendicular to the height direction and the first direction of the battery cell respectively.

Optionally, the first connecting piece is in an i-shaped structure, and the second connecting piece is in a T-shaped structure; alternatively, the first connecting piece is of a T-shaped structure, and the second connecting piece is of an I-shaped structure.

Optionally, the cell module further comprises two side plates, wherein the two side plates are arranged on two opposite sides of the cell in a second direction, and the second direction is perpendicular to the height direction and the first direction of the cell respectively; the side plate is provided with a first matching part, and the battery cell is provided with a first plug-in part which is connected with the first matching part in a plug-in way.

Optionally, two folds extending towards the direction of the battery cell are arranged on one surface of the side plate close to the battery cell, the two folds are distributed along the height direction of the battery cell, and the distance between the two folds is greater than or equal to the height of the battery cell.

Optionally, the cell module further includes a first supporting block group and a second supporting block group, the first supporting block group and the second supporting block group are respectively arranged on two opposite sides of the cell along the first direction, and the first supporting block group and the second supporting block group are respectively connected with the cell.

Optionally, a second matching part is arranged on one side of the supporting block group, which is close to the battery cell, and a second inserting part is arranged on one side of the battery cell, which is close to the supporting block group, and the second matching part is connected with the second inserting part in an inserting and pulling way.

Optionally, the support block is provided with a threaded hole penetrating along the first direction; and/or the supporting block is provided with a through hole which is communicated along the height direction of the battery cell.

The beneficial effects of the utility model include:

the battery cell module comprises a plurality of battery cells arranged side by side along a first direction, wherein any two adjacent battery cells are connected through a connecting structure, and the connecting structure is used for limiting the battery cells to move along the height direction; the connecting structure comprises a first connecting piece and a second connecting piece which are connected with each other, wherein the first connecting piece is arranged on one surface of one of the battery cells, and the second connecting piece is arranged on one surface of the other battery cell. According to the utility model, the connecting structure is arranged between two adjacent electric cores, the first connecting piece of the connecting structure is arranged on one electric core, and the second connecting piece is arranged on the other electric core, so that the first connecting piece and the second connecting piece are connected, and the connection between the two adjacent electric cores can be realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a battery cell module according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a first electrical core according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a second electrical core according to an embodiment of the present utility model;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is a schematic diagram illustrating a mating relationship between a first connector and a second connector according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of a side plate according to an embodiment of the present utility model;

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

FIG. 9 is a schematic structural view of a support block according to an embodiment of the present utility model;

fig. 10 is a partial enlarged view at D in fig. 9.

Icon: 10-an electric core; 11-a first cell; 12-a second cell; 21-a first connector; 22-a second connector; 23-a first plug-in part; 24-a second plug-in part; a-a first direction; b-a second direction; c-the height direction of the battery cell; 30-side plates; 31-a first mating portion; 32-flanging; 41-a first set of support blocks; 42-a second set of support blocks; 43-supporting blocks; 431-a second mating portion; 432-threaded holes; 433-through hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, the present embodiment provides a battery cell module, which includes a plurality of battery cells 10 arranged side by side along a first direction a, wherein any two adjacent battery cells 10 are connected by a connection structure, and the connection structure is used for limiting the battery cells 10 to move along the height direction thereof; the connecting structure comprises a first connecting piece 21 and a second connecting piece 22 which are connected with each other, wherein the first connecting piece 21 is arranged on one surface of one cell 10, and the second connecting piece 22 is arranged on one surface of the other cell 10. The cell module can improve the up-and-down jumping problem of the cell 10 in the vertical direction, thereby improving the structural reliability of the cell module.

The plurality of battery cells 10 include a plurality of battery cells 10 arranged along a first direction a as shown in fig. 1. In the present embodiment, two adjacent cells 10 are connected to each other, specifically, two adjacent cells 10 are connected by a connection structure.

It should be noted that the plurality of battery cells 10 may be connected in series or in parallel, and the electrical connection manner is not limited in the present utility model.

The present utility model is not limited to the specific structural form of the connection structure as long as the connection structure can restrict the movement of the battery cell 10 in the height direction thereof. That is, the connection structure is only required to prevent the cell 10 from moving up and down in the height direction c of the cell.

In this embodiment, the connection structure includes a first connection member 21 and a second connection member 22, where the first connection member 21 and the second connection member 22 are connected to each other, and the first connection member 21 is disposed on one side of one of the cells 10 (the cell 10 refers to one of any two adjacent cells 10), and the second connection member 22 is disposed on one side of the other cell 10 (the cell 10 refers to the other of any two adjacent cells 10).

In summary, the cell module provided by the present utility model includes a plurality of cells 10 arranged side by side along a first direction a, wherein any two adjacent cells 10 are connected by a connection structure, and the connection structure is used for limiting the movement of the cells 10 along the height direction thereof; the connecting structure comprises a first connecting piece 21 and a second connecting piece 22 which are connected with each other, wherein the first connecting piece 21 is arranged on one surface of one cell 10, and the second connecting piece 22 is arranged on one surface of the other cell 10. According to the utility model, the connecting structure is arranged between two adjacent electric cores 10, the first connecting piece 21 of the connecting structure is arranged on one electric core 10, and the second connecting piece 22 is arranged on the other electric core 10, so that the connection between the two adjacent electric cores 10 can be realized by connecting the first connecting piece 21 with the second connecting piece 22, and the connecting structure can limit the movement of the electric cores 10 along the height direction, so that the electric core module provided by the utility model can improve the up-down jumping problem of the electric cores 10 in the vertical direction, and further improve the structural reliability of the electric core module.

Referring to fig. 2 to 5, optionally, the plurality of electrical cores 10 includes a plurality of first electrical cores 11 and a plurality of second electrical cores 12, and the plurality of first electrical cores 11 and the plurality of second electrical cores 12 are alternately arranged; the first connecting piece 21 is arranged on one surface of the first battery cell 11 for being matched with the second battery cell 12, and the second connecting piece 22 is arranged on one surface of the second battery cell 12 for being matched with the first battery cell 11.

For ease of understanding, it is assumed that the cell stack includes ten cells 10, with the ten cells 10 being arranged side by side along the first direction a. Since the plurality of first electric cells 11 and the plurality of second electric cells 12 are alternately arranged, the ten electric cells 10 include five first electric cells 11 and five second electric cells 12, wherein the first electric cells 11 are adjacent to the second electric cells 12. Namely, ten electric cores 10 are arranged in the following manner: first cell 11, second cell 12, first cell 11, … … first cell 11, second cell 12. Of course, the first cell 11 and the second cell 12 may be interchanged in position. When the number of the plurality of battery cells 10 varies, those skilled in the art can simply derive from the above examples, and the present utility model will not be repeated.

In this embodiment, in one embodiment, the first connecting member 21 may be disposed only on a surface of the first battery cell 11 for mating with the second battery cell 12, and the second connecting member 22 may be disposed only on a surface of the second battery cell 12 for mating with the first battery cell 11.

In another embodiment, referring to fig. 2 and fig. 3, the first battery cell 11 may further be provided with first connecting members 21 on two opposite sides along the first direction a, and referring to fig. 4 and fig. 5, the second battery cell 12 may be provided with second connecting members 22 on two opposite sides along the first direction a.

Still alternatively, in other embodiments, the first connector 21 and the second connector 22 may be disposed on opposite sides of either cell 10, respectively. That is, the first battery cell 11 may be provided with the first connection member 21 and the second connection member 22 on opposite sides thereof in the first direction a, respectively, and correspondingly, the second battery cell 12 may be provided with the second connection member 22 and the first connection member 21 on opposite sides thereof in the first direction a, respectively. As long as one of the surfaces of the adjacent two cells 10, which are close to each other, is the first connecting member 21 and the other is the second connecting member 22.

Referring to fig. 3 and 5, alternatively, the first connecting member 21 and the second connecting member 22 are connected in a plug-in manner along a second direction b, and the second direction b is perpendicular to the height direction c and the first direction a of the battery cell, respectively.

That is, the first connector 21 (or the second connector 22) moves in the second direction b, and can be connected to and disconnected from the second connector 22 (or the first connector 21).

According to the utility model, the first connecting piece 21 and the second connecting piece 22 are connected in a plug-in mode along the second direction b, the first connecting piece 21 and the second connecting piece 22 are limited along the height direction c of the battery cell, namely, the first connecting piece 21 and the second connecting piece 22 are interlocked and dead along the height direction c of the battery cell, and the connecting structure limits the movement of the battery cell 10 along the height direction c of the battery cell. In this way, the movement along the second direction b can enable the first connecting piece 21 and the second connecting piece 22 to be in quick connection and matching, so that the disassembly and assembly of two adjacent battery cells 10 are convenient.

As shown in fig. 3 and 5, alternatively, the first connecting member 21 has an i-shaped structure and the second connecting member 22 has a T-shaped structure. Thus, the second connector 22 can be connected to the first connector 21 in a plug-in manner, as shown in fig. 6.

Alternatively, the structural characteristics of the first connector 21 and the second connector 22 may be interchanged, i.e., the first connector 21 is of a T-shaped configuration and the second connector 22 is of an i-shaped configuration.

Referring to fig. 1, 7 and 8, optionally, the cell module further includes two side plates 30, the two side plates 30 are arranged on opposite sides of the cell 10 along a second direction b, and the second direction b is perpendicular to the height direction c and the first direction a of the cell, respectively; the side plate 30 is provided with a first matching part 31, and the battery cell 10 is provided with a first plug-in part 23 which is connected with the first matching part 31 in a plug-in mode.

The side plate 30 is provided to limit the movement of the battery cell 10 in the second direction b.

In this embodiment, the two side plates 30 are respectively provided with a first mating portion 31, and the opposite sides of the battery cell 10 along the second direction b are provided with first plug-in portions 23, and the first mating portions 31 of the side plates 30 are connected with the first plug-in portions 23 of the battery cell 10 in a plug-in manner.

Thus, as shown in fig. 1, two adjacent cells 10 can be connected together in a plug-in manner along the second direction b through a connecting structure, and then two side plates 30 are connected at two opposite ends of the cell 10 in a plug-in manner along the first direction a, so that the connecting structure can limit the movement of the cell 10 along the height direction c of the cell, and the side plates 30 can limit the movement of the cell 10 along the second direction b, thereby effectively improving the jumping problem of the cell 10 in the battery box and further improving the structural reliability of the cell module.

In order to effectively protect the upper and lower ends of the battery cell 10, optionally, two folded edges 32 extending towards the direction of the battery cell 10 are arranged on one surface of the side plate 30, which is close to the battery cell 10, the two folded edges 32 are arranged along the height direction c of the battery cell, and the distance between the two folded edges 32 is greater than or equal to the height of the battery cell 10.

The two folded edges 32 are arranged along the height direction c of the battery cell, and the distance between the two folded edges 32 is greater than or equal to the height of the battery cell 10, so that the battery cell 10 can be limited between the two folded edges 32, the battery cell 10 can be protected by the two folded edges 32, the battery cell 10 is prevented from being damaged due to collision, and the protection level of the battery cell module can be improved.

Referring to fig. 1 and 9, optionally, the cell module further includes a first supporting block set 41 and a second supporting block set 42, the first supporting block set 41 and the second supporting block set 42 are respectively arranged at two opposite sides of the cell 10 along the first direction a, and the first supporting block set 41 and the second supporting block 43 are respectively connected with the cell 10.

The first supporting block group 41 is disposed on one side of the plurality of battery cells 10 along the first direction a, and includes a plurality of supporting blocks 43. The second supporting block set 42 is disposed on the other side of the plurality of cells 10 along the first direction a, and also includes a plurality of supporting blocks 43.

The present utility model is not limited to a specific number of support blocks 43, and fig. 1 is an example in which each support block 43 group includes four support blocks 43. The present utility model can eliminate the need for an additional end plate by providing the first support block group 41 and the second support block group 42.

Optionally, referring to fig. 10, a second mating portion 431 is disposed on a side of the support block 43 set near the battery cell 10, and a second plugging portion 24 is disposed on a side of the battery cell 10 near the support block 43 set, where the second mating portion 431 is connected to the second plugging portion 24 in a plugging manner.

It should be noted that the second plug portion 24 is disposed at one side of the battery cells 10 (i.e., the head ends of the plurality of battery cells 10 and the tail ends of the plurality of battery cells 10 are respectively provided with the second plug portion 24). If the second engaging portion 431 has a T-shaped structure, the second plugging portion 24 may have an i-shaped structure, as shown in fig. 10; if the second engaging portion 431 has an i-shaped structure, the second mating portion 24 may have a T-shaped structure.

Specifically, the structure of the second mating portion 431 may depend on the structure of the second plugging portion 24, which is not limited by the present utility model.

Referring to fig. 9, the supporting block 43 is provided with a threaded hole 432 penetrating along the first direction a; and/or, the supporting block 43 is provided with a through hole 433 penetrating along the height direction c of the battery cell.

In this way, the second engaging portion 431 can connect the supporting block 43 with the battery cell 10 at the front end and the rear end, and the second engaging portion 431 and the second plugging portion 24 are connected in a plugging manner, so that the threaded hole 432 is provided on the supporting block 43 in order to prevent the supporting block 43 from sliding on the battery cell 10. Thus, when in use, the fixing bolt is screwed into the threaded hole 432, the end part of the fixing bolt can be pressed on the contact surface of the battery cell 10 by screwing the fixing bolt, and the friction force of the supporting block 43 in the second plug-in part 24 of the battery cell 10 is increased by increasing the pressure between the fixing bolt and the battery cell 10, so that the fixing and limiting effects are finally achieved.

The utility model is provided with the through holes 433, so that the whole module can be fixed in the battery box through the fixing bolts when in use.

The above description is only of alternative embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Claims (10)

1. The battery cell module is characterized by comprising a plurality of battery cells which are arranged side by side along a first direction, wherein any two adjacent battery cells are connected through a connecting structure, and the connecting structure is used for limiting the battery cells to move along the height direction;

the connecting structure comprises a first connecting piece and a second connecting piece which are connected with each other, wherein the first connecting piece is arranged on one surface of one battery cell, and the second connecting piece is arranged on one surface of the other battery cell.

2. The battery cell module of claim 1, wherein the plurality of battery cells comprises a plurality of first battery cells and a plurality of second battery cells, and wherein the plurality of first battery cells and the plurality of second battery cells are alternately arranged; the first connecting piece is arranged on one surface of the first battery cell, which is used for being matched with the second battery cell, and the second connecting piece is arranged on one surface of the second battery cell, which is used for being matched with the first battery cell.

3. The battery cell module of claim 2, wherein the first connecting pieces are respectively disposed on two opposite sides of the first battery cell along the first direction, and the second connecting pieces are respectively disposed on two opposite sides of the second battery cell along the first direction.

4. A cell module according to any one of claims 1 to 3, wherein the first and second connectors are connected in a pluggable manner along a second direction, the second direction being perpendicular to the height direction and the first direction of the cell, respectively.

5. The battery cell module of claim 3, wherein the first connector is an i-shaped structure and the second connector is a T-shaped structure; or, the first connecting piece is of a T-shaped structure, and the second connecting piece is of an I-shaped structure.

6. The battery cell module of claim 1, further comprising two side plates arranged on opposite sides of the battery cell along a second direction, the second direction being perpendicular to the height direction and the first direction of the battery cell, respectively; the side plate is provided with a first matching part, and the battery cell is provided with a first plug-in part which is connected with the first matching part in a plug-in mode.

7. The battery cell module of claim 6, wherein two folds extending towards the direction of the battery cell are arranged on one surface of the side plate, which is close to the battery cell, the two folds are arranged along the height direction of the battery cell, and the distance between the two folds is larger than or equal to the height of the battery cell.

8. The battery cell module of claim 1, further comprising a first set of support blocks and a second set of support blocks, the first set of support blocks and the second set of support blocks being arranged on opposite sides of the battery cell along the first direction, respectively, the first set of support blocks and the second set of support blocks being connected to the battery cell, respectively.

9. The battery cell module of claim 8, wherein a second mating portion is disposed on a side of the support block set, which is adjacent to the battery cell, and a second plugging portion is disposed on a side of the battery cell, which is adjacent to the support block set, and the second mating portion is connected to the second plugging portion in a plugging manner.

10. The battery cell module of claim 9, wherein the support block is provided with a threaded hole penetrating along the first direction; and/or the supporting block is provided with a through hole which penetrates along the height direction of the battery cell.