CN217426987U

CN217426987U - Battery module and battery pack

Info

Publication number: CN217426987U
Application number: CN202220738016.2U
Authority: CN
Inventors: 宋海阳; 陈荣康
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-09-13
Anticipated expiration: 2032-03-30

Abstract

The application relates to the technical field of batteries, in particular to a battery module and a battery pack. The battery module comprises a positive output electrode, a negative output electrode, a BMS slave plate and a plurality of battery cells; the battery cores are arranged side by side along the thickness direction of the battery cores and are sequentially connected in series to form a battery core assembly, and the BMS slave plate is arranged on one side of the battery core assembly in the thickness direction; along the thickness direction of electric core, two electric cores that lie in the most marginal in the electric core subassembly are external electric core, and one in two external electric cores is connected with positive output pole, and another is connected with the negative output pole. The battery pack comprises the battery module. The battery module and the battery pack save installation space, improve the space utilization rate and space layout rationality of the battery module and the battery pack using the battery module, and improve the production efficiency of the battery module.

Description

Battery module and battery pack

Technical Field

The application relates to the technical field of batteries, in particular to a battery module and a battery pack.

Background

The conventional Battery module includes a plurality of Battery cells, which are usually sequentially connected, that is, a positive post of a previous Battery cell is sequentially connected to a negative post of a next Battery cell in a facing manner, and a Battery Management System (BMS) slave board is externally disposed relative to the Battery module, so that the Battery pack needs to be allocated with an extra space for accommodating a BMS slave board and a BMS mainboard, and therefore, a wire harness is required to connect the Battery module and the BMS slave board, and the Battery pack needs to be allocated with an extra space for accommodating the wire harnesses.

It can be seen that the structure of this kind of battery module at present not only wastes space, leads to space utilization lower, moreover because need the pencil to connect, can't realize automatic installation, so also can cause the influence to production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery module and battery package to solve the unreasonable technical problem that leads to space utilization to hang down and production efficiency is low of battery module structure that exists among the prior art to a certain extent.

The application provides a battery module, which comprises a positive output electrode, a negative output electrode, a BMS slave plate and a plurality of battery cells;

the battery cores are arranged side by side along the thickness direction of the battery cores and are sequentially connected in series to form a battery core assembly, and the BMS slave plate is arranged on one side of the battery core assembly in the thickness direction;

and along the thickness direction of the electric cores, two electric cores positioned at the most edge in the electric core assembly are external electric cores, one of the two external electric cores is connected with the positive output electrode, and the other one is connected with the negative output electrode.

In the above technical solution, further, the number of the battery cells is odd;

the positive output electrode and the negative output electrode are respectively arranged at different ends of the two external battery cells in the length direction.

In any one of the above technical solutions, further, the number of the battery cells is 25, 27, 29, or 31.

In any of the above technical solutions, further, the number of the battery cells is even;

the positive output electrode and the negative output electrode are respectively arranged at the same end of the two external battery cells in the length direction.

In any one of the above technical solutions, further, the number of the battery cells is 26, 28, 30, or 32.

In any of the above technical solutions, further, an external cell close to the BMS slave plate among the two external cells is a first external cell, and an external cell far from the BMS slave plate among the two external cells is a second external cell;

the negative output electrode is arranged on the first external battery cell, and the positive output electrode is arranged on the second external battery cell.

the positive output electrode is arranged on the first external battery cell, and the negative output electrode is arranged on the second external battery cell.

In any of the above technical solutions, further, an installation space for accommodating the electric control board is provided inside the BMS slave board, avoidance notches are provided at both ends of the BMS slave board in the length direction, and the avoidance notches are communicated with the installation space.

In any of the above technical solutions, further, the length of the battery cell is 275-600 mm;

the thickness of the battery cell is 20-35 mm;

the height of the battery cell is 90-130 mm.

The application also provides a battery pack, which comprises the battery module.

Compared with the prior art, the beneficial effects of this application do:

the application provides a battery module, including positive output pole, negative output pole, BMS slave plate and a plurality of electric core. A plurality of electric cores set up side by side and establish ties in order along the thickness direction of electric core and form electric core subassembly, the BMS slave plate sets up in one side of the thickness direction of electric core subassembly, thereby with the integrated lateral part at electric core subassembly of BMS slave plate, need not to provide extra installation space for the BMS slave plate, the pencil that also need not to adopt complicated line of walking switches on every electric core in BMS slave plate and the electric core subassembly mutually, installation space has been saved, the space utilization and the spatial layout rationality of the battery package of this battery module and applied this battery module have been improved, in addition, the line equipment degree of difficulty of battery module and BMS bus has still been simplified, the production efficiency of this battery module has been improved.

Along the thickness direction of electric core, two electric cores that lie in the most marginal in the electric core subassembly are external electric core, one of two external electric cores is connected with positive output pole, another is connected with negative output pole, thereby make positive output pole and the negative output pole of this battery module be located the both ends that set up the direction side by side of electric core respectively, when assembling a plurality of this battery modules and under the condition of establishing ties in order, positive output pole between the adjacent battery module is nearer with the distance of negative output pole, be convenient for connect, also can play the simplification line degree of difficulty, reduce pencil occupation space's effect.

The battery pack provided by the application comprises the battery module, so that all beneficial effects of the battery module can be realized.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view illustrating a first structure of a battery module according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a second structural schematic diagram of a battery module according to an embodiment of the present disclosure;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

fig. 5 is a schematic diagram of a third structure of a battery module according to an embodiment of the present disclosure;

fig. 6 is a fourth structural schematic diagram of a battery module according to an embodiment of the present application.

Reference numerals:

1-a battery module; 10-electric core; 11-a first external cell; 12-a second external battery cell; 13-positive output pole; 14-a negative output electrode; 15-a busbar; 16-BMS slave boards; 160-avoid the notch.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "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; they may be connected directly or indirectly through intervening media, or they may be interconnected between 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.

Example one

Referring to fig. 1 to 6, an embodiment of the present application provides a battery module 1 including a positive output electrode 13, a negative output electrode 14, a BMS slave plate 16, and a plurality of battery cells 10.

Hereinafter, the above-described components of the battery module 1 will be described in detail.

In an alternative of the present embodiment, as shown in fig. 1, 2, 5, and 6, a plurality of battery cells 10 are arranged side by side in the thickness direction of the battery cells 10 and are sequentially connected in series to form a battery core assembly, and a BMS is disposed at one side in the thickness direction of the battery core assembly from the board 16.

Thereby only need flow in the thickness direction of electric core 10 and the installation space that the thickness of BMS slave plate 16 is equivalent, can be used for controlling this electric core subassembly BMS slave plate 16 and electric core subassembly integration together, not only need not to set up extra special space and install BMS slave plate 16, space utilization has been improved, and because BMS slave plate 16 and electric core subassembly are installed nearby, be convenient for be connected every electric core 10 electricity in the automatically controlled board in the BMS slave plate 16 and the electric core subassembly mutually, the degree of difficulty and the installation space of pencil connection between the two have been reduced, thereby can also improve production efficiency.

Alternatively, in order to avoid the occurrence of pinching between the adjacent battery cells 10 and to leave a space margin for each battery cell 10 to expand in the thickness direction, a plurality of battery cells 10 are arranged side by side at a predetermined interval in the thickness direction between the adjacent battery cells 10.

Optionally, two ends of the battery cell 10 in the length direction are respectively provided with a positive pole column and a negative pole column, and the polarities of the pole columns at the same end of the adjacent battery cells 10 in the length direction are different. That is, the positive and negative electrode posts of each of the battery cells 10 are disposed at both ends of the battery cells 10 in the longitudinal direction, and the direction in which the plurality of battery cells 10 are disposed side by side is the thickness direction of the battery cells 10, so that the direction in which the battery cells 10 are disposed side by side is different from the pole distribution direction. This kind of mode of arranging can reduce the stacking of a plurality of electric cores 10 on length direction for the whole spatial layout of electric core subassembly is more reasonable.

Alternatively, the battery cell 10 may be flat, where the thickness of the flat battery cell 10 refers to a dimension of the battery cell 10 that is relatively flat, the length of the flat battery cell 10 refers to a longest dimension of the battery cell 10, and another dimension of the flat battery cell 10 is a height of the battery cell 10.

In this embodiment, the length of the battery cell 10 is 275-600mm, for example 275mm, 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, or 600 mm.

The thickness of the cell 10 is 20-35mm, for example 20mm, 25mm, 30mm or 35 mm.

The height of the cell 10 is 90-130mm, for example 90mm, 100mm, 110mm, 120mm or 130 mm.

In an alternative of this embodiment, along the thickness direction of the battery cells 10, two battery cells 10 located at the edge most in the battery cell assembly are external battery cells 10, one of the two external battery cells 10 is connected to a positive output electrode 13, and the other is connected to a negative output electrode 14. Specifically, the positive pole of one of the two external battery cells 10 is connected to the positive output pole 13, and the negative pole of the other of the two external battery cells 10 is connected to the negative output pole 14, so that the battery module 1 can be conducted with other battery modules 1 or other electric devices through the positive output pole 13 and the negative output pole 14.

An external battery cell 10 close to the BMS slave board 16 in the two external battery cells 10 is defined as a first external battery cell 11, and an external battery cell 10 far away from the BMS slave board 16 in the two external battery cells 10 is defined as a second external battery cell 12. Then, the positive output electrode 13 is disposed on the first external electrical core 11, and the negative output electrode 14 is disposed on the second external electrical core 12; or, the positive output electrode 13 is disposed on the second external connection cell 12, and the negative output electrode 14 is disposed on the first external connection cell 11.

Alternatively, a plurality of the battery cells 10 are connected in series by the bus bar 15, so that the positive output electrode 13 and the negative output electrode 14 may be formed by ends of the bus bar 15.

In an alternative of this embodiment, as shown in fig. 1 to 4, the number of the battery cells 10 may be an even number, and since the polarities of the poles at the same end in the length direction of the adjacent battery cells 10 are different, the polarities of the poles at the same end in the length direction of the two external battery cells 10 are the same, and are both positive poles or both negative poles, and the polarities of the poles at different ends in the length direction of the two external battery cells 10 are different, where one of the poles is a positive pole and the other is a negative pole, the positive output pole 13 and the negative output pole 14 are respectively disposed at different ends in the length direction of the two external battery cells 10.

Alternatively, when the number of the battery cells 10 is an even number, the number of the battery cells 10 may be set to, for example, 24, 26, 28, 30, or 32, and further, the number of the battery cells 10 may be set to, for example, twice the above-mentioned number, according to the size of a commonly used battery module and the power supply requirement. Of course, besides the above-mentioned even numbers, the specific even number of the battery cells 10 may also be selected according to the actual size of the battery module and the power supply requirement. Further, when the number of the battery cells 10 is an even number, two kinds of battery modules 1 can be obtained according to the positions of the positive output electrode 13 and the negative output electrode 14, and the two kinds of battery modules 1 are defined as a first battery module and a second battery module, respectively.

As shown in fig. 1 and 2, an end of the battery cell 10 located above in the view of fig. 1 and 2 is defined as a first end in the length direction, and an end located below is defined as a second end in the length direction. The structure of the first battery module is then: the positive output electrode 13 is disposed at a second end of the second external electric core 12 in the length direction, and the negative output electrode 14 is disposed at a first end of the first external electric core 11.

As shown in fig. 3 and 4, an end of the battery cell 10 located above in the view of fig. 3 and 4 is defined as a first end in the length direction, and an end located below is defined as a second end in the length direction. The structure of the second battery module is: the positive output electrode 13 is disposed at a second end of the first external cell 11 in the length direction, and the negative output electrode 14 is disposed at a first end of the second external centering in the length direction.

In an alternative of this embodiment, as shown in fig. 5 and fig. 6, the number of the battery cells 10 may be an odd number, and since the polarities of the poles at the same end in the length direction of the adjacent battery cells 10 are different, the polarities of the poles at the same end in the length direction of the two external battery cells 10 are different, one of the poles is a positive pole, and the other is a negative pole, so that the positive output pole 13 and the negative output pole 14 are respectively disposed at the same end in the length direction of the two external battery cells 10.

Alternatively, when the number of the battery cells 10 is an odd number, the number of the battery cells 10 may be set to, for example, 23, 25, 27, 29, or 31, and further, the number of the battery cells 10 may be set to, for example, twice the number of the battery cells 10 according to the size of a commonly used battery module and the power supply requirement. Of course, besides the above-mentioned odd number, the specific odd number of the battery cells 10 may also be selected according to the actual size of the battery module and the power supply requirement.

Further, when the number of the battery cells 10 is odd, two kinds of battery modules 1 can be obtained according to the positions of the positive output electrode 13 and the negative output electrode 14, and the two kinds of battery modules 1 are respectively defined as a third battery module and a fourth battery module.

As shown in fig. 5, an end of the battery cell 10 located above in the view of fig. 5 is defined as a first end in the length direction, and an end located below is defined as a second end in the length direction. The structure of the third battery module is: the positive output electrode 13 is disposed at a second end of the second external electrical core 12 in the length direction, and the negative output electrode 14 is disposed at a second end of the first external electrical core 11 in the length direction.

As shown in fig. 6, an end of the battery cell 10 located above in the view of fig. 6 is defined as a first end in the length direction, and an end located below is defined as a second end in the length direction. The structure of the fourth battery module is: the positive output electrode 13 is disposed at a first end of the first external cell 11 in the length direction, and the negative output electrode 14 is disposed at a first end of the second external cell 12 in the length direction.

In an alternative of this embodiment, a mounting space for receiving an electric control board for monitoring the operating state, such as voltage, etc., of each of the cells 10 in the cell assembly is provided inside the BMS so that the electric control board is fixed, supported and protected from the board 16 by the BMS.

In order to facilitate the electrical connection of the positive pole and the negative pole of each battery cell 10 with the electric control board through the collection component, avoidance notches 160 are respectively arranged at two ends of the BMS slave board 16 in the length direction, and the avoidance notches 160 are communicated with the installation space, so that the joint part of the electric control board in the installation space can be exposed relative to the collection component through the avoidance notches 160, and the collection component can be conveniently and electrically connected with the electric control board.

Example two

The second embodiment provides a battery pack, the second embodiment includes the battery module of the first embodiment, the technical features of the battery module disclosed in the first embodiment are also applicable to the second embodiment, and the technical features of the battery module disclosed in the first embodiment are not described repeatedly.

As shown in fig. 1 to 6, the battery pack according to the present embodiment includes a plurality of battery modules 1 connected in series in sequence, and specifically, the positive output electrode 13 of the previous battery module 1 is connected to the negative output electrode 14 of the next battery module 1, and the positive output electrode 13 and the negative output electrode 14 located at the extreme end in the series path are used as external terminals of the battery pack.

The plurality of battery modules may be formed by combining at least two of the first battery module, the second battery module, the third battery module, and the fourth battery module.

The battery pack in this embodiment has the advantages of the battery module in the first embodiment, and the advantages of the battery module disclosed in the first embodiment are not described repeatedly herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Claims

1. A battery module is characterized by comprising a positive output electrode, a negative output electrode, a BMS slave plate and a plurality of battery cells;

along the thickness direction of electric core, two of the electric core subassembly lie in edgemost two the electricity core is external electric core, two one in the external electric core is connected with positive output pole, and the other is connected with negative output pole.

2. The battery module according to claim 1, wherein the number of the cells is an odd number;

3. The battery module according to claim 2, wherein the number of the cells is 23, 25, 27, 29 or 31.

4. The battery module according to claim 1, wherein the number of the cells is an even number;

5. The battery module according to claim 4, wherein the number of the cells is 24, 26, 28, 30 or 32.

6. The battery module according to claim 2 or 4, wherein an external cell of the two external cells close to the BMS slave board is a first external cell, and an external cell of the two external cells far away from the BMS slave board is a second external cell;

7. The battery module according to claim 2 or 4, wherein an external cell of the two external cells close to the BMS slave board is a first external cell, and an external cell of the two external cells far away from the BMS slave board is a second external cell;

8. The battery module according to claim 5, wherein an installation space for accommodating the electric control board is formed in the BMS slave board, and avoidance notches are formed in both ends of the BMS slave board in the length direction and are communicated with the installation space.

9. The battery module according to claim 1, wherein the length of the cell is 275-600 mm;

the thickness of the battery cell is 20-35 mm;

the height of the battery cell is 90-130 mm.

10. A battery pack, comprising the battery module according to any one of claims 1 to 9.