阅读说明：本技术 电池组及其部件以及电池组电芯装配方法 (Battery pack, components thereof and battery cell assembly method ) 是由 葛攀 郑云华 陈林云 苏焕宇 刘长宏 张梦玉 于 2020-12-18 设计创作，主要内容包括：本发明提供了一种电池组的部件,包括基部和多个导向部,导向部设在基部上,沿第二方向分布,各个导向部沿第一方向同向延伸,相邻两个导向部之间界定出沿第一方向的导向槽,相邻两个导向部的前端界定出导向槽的入口,第二方向不平行于第一方向。还提供了一种电池组,包括电芯以及上述的电池组的部件,每一电芯的极耳对应设在一个导向槽中。还提供了一种电池组电芯装配方法,利用上述电池组的部件装配电芯。该电池组及其部件以及电池组电芯装配方法,由于每个电芯的极耳设在一个导向槽中,所以各个电芯的极耳不相互接触,避免发生接触短路的风险,并且适用于高效、低成本的自动化电芯装配。(The invention provides a component of a battery pack, which comprises a base part and a plurality of guide parts, wherein the guide parts are arranged on the base part and distributed along a second direction, each guide part extends along the same direction of the first direction, a guide groove along the first direction is defined between every two adjacent guide parts, the front ends of every two adjacent guide parts define an inlet of the guide groove, and the second direction is not parallel to the first direction. The battery pack comprises battery cells and the battery pack component, and the lug of each battery cell is correspondingly arranged in one guide groove. The battery cell assembling method is also provided, and the battery cell is assembled by using the components of the battery pack. According to the battery pack, the components of the battery pack and the battery cell assembly method of the battery pack, the lugs of each battery cell are arranged in one guide groove, so that the lugs of each battery cell are not in mutual contact, the risk of contact short circuit is avoided, and the battery pack is suitable for automatic battery cell assembly with high efficiency and low cost.)

1. Component (1) of a battery, characterized in that it comprises:

a base (11);

and the guide parts (12) are arranged on the base part (11) and distributed along a second direction (42), each guide part (12) extends along the same direction of the first direction (41), a guide groove (13) along the first direction (41) is defined between every two adjacent guide parts (12), the front ends of every two adjacent guide parts (12) define an inlet (131) of the guide groove (13), and the second direction (42) is not parallel to the first direction (41).

2. The component (1) of a battery according to claim 1, characterized in that each of said guides (12) is elongated.

3. The component (1) of a battery pack according to claim 1, wherein both sides of the front end of the guide portion (12) are chamfered or rounded to make the entrance (131) of the guide groove (13) gradually wider from the inside to the outside.

4. Component (1) of a battery according to claim 1, characterized in that the component (1) of a battery is a PCB.

5. Battery pack component (1) according to claim 4, characterised by a pad (121) provided on at least part of the guide (12).

6. Component (1) of a battery according to claim 5, characterized in that the pads (121) are provided at the head and/or tail of the guides (12).

7. Battery pack component (1) according to claim 5, characterized in that the number of said pads (121) on one of said guides (12) is at least two and is distributed along a first direction.

8. Component (1) of a battery pack according to claim 5, characterized in that the base part (11) and/or the guide part (12) of the component (1) of the battery pack is provided with a connection part (111), the connection part (111) being electrically connected with the soldering pad (121).

9. Component (1) of a battery according to claim 1, characterized in that the second direction (42) is perpendicular to the first direction (41).

10. A battery pack, characterized by comprising a battery cell (2) and a component (1) of the battery pack according to any one of claims 1 to 9, wherein the battery cell (2) comprises a main body portion (22) and tabs (21) provided on the main body portion (22), and the tab (21) of each battery cell (2) is correspondingly provided in one of the guide grooves (13).

11. The battery pack according to claim 10, wherein two tabs (21) are provided at the edge of the main body portion (22) at intervals.

12. The battery pack according to claim 11, characterized in that, for each of the battery cells (2), two tabs (21) are provided along the guide groove (13).

13. The battery pack according to claim 10, characterized in that the tabs (21) of adjacent cells (2) are bent toward each other and electrically connected.

14. The battery pack according to claim 13, characterized in that the cells (2) are connected in series or in parallel.

15. Battery pack according to claim 10, characterized in that the component (1) of the battery pack is a PCB, that at least part of the guides (12) are provided with pads (121), and that at least part of the tabs (21) are located beside the pads (121) and are electrically connected to the pads (121).

16. Battery pack according to claim 15, characterized in that the base (11) and/or the guide (12) of the component (1) of the battery pack is provided with a connection part (111), which connection part (111) is electrically connected with the soldering pad (121).

17. A method of assembling a battery cell, comprising the steps of:

s001: -providing a component (1) of a battery according to any of claims 1-9;

s103: aligning a tab (21) of a battery cell (2) with the guide groove (13) of the component (1) of the battery pack, and entering along the guide groove (13) to assemble the battery cell (2) with the component (1) of the battery pack;

if the number of the electric cores (2) is at least two, the electric cores (2) are assembled in sequence or at least two electric cores (2) are assembled simultaneously, wherein the tab (21) of one electric core (2) correspondingly enters one guide groove (13).

18. The battery cell assembly method of claim 17, wherein the component (1) of the battery is a PCB, and at least a portion of the guides (12) are provided with pads (121) for electrical connection with the tabs (21) of the battery cells (2);

the S103 includes: enabling the tab (21) of the battery cell (2) to be beside the welding disc (121);

the battery cell assembly method further comprises the steps of:

s201: bending the tabs (21) towards the corresponding bonding pads (121);

s301: and electrically connecting the tabs (21) with the corresponding pads (121).

19. The battery cell assembly method of claim 18, further comprising, before the step S103, a step S101 of: -fixing the component (1) of the battery pack on a second support face (52) and a third support face (53), the second support face (52) being parallel to the second direction (42) and the third support face (53) being parallel to the first direction (41).

20. The battery cell assembly method of claim 19, wherein the S201 includes: aligning the cell (2) against a first support surface (51) in the first direction (41) in relation to the guide groove (13), and moving along the guide groove (13) until the cell (2) abuts against the second support surface (52), wherein the first support surface (51) is parallel to the second direction (42) and the first direction (41), and the second support surface (52) is parallel to the second direction (42) and perpendicular to the first support surface (51).

21. The battery cell assembling method according to claim 20, further comprising, between the S201 and the S301, step S202: -fixing the electric core (2) in the second direction (42).

Technical Field

The invention relates to the technical field of batteries, in particular to a battery pack, components of the battery pack and an assembly method of battery cores of the battery pack.

Background

The battery pack usually contains electric core, and the utmost point ear electricity each other of each electric core is connected, and utmost point ear structural stability is poor usually, and especially soft package lithium ion battery receives surperficial plastic-aluminum membrane material and structural feature to influence, and its utmost point ear is easily buckled, and structural stability is poor, and the electric core assembly degree of difficulty is big, and assembly speed is slow, especially to the group battery of no support, must rely on extra instrument auxiliary assembly during electric core assembly, does not have at present easily to realize automatic high-speed, low-cost electric core assembly scheme.

Disclosure of Invention

The invention aims to solve the technical problem of low battery cell assembly efficiency in the related art, and provides a battery pack suitable for efficient automatic assembly, components of the battery pack and a battery cell assembly method.

The technical scheme adopted by the invention for solving the technical problem comprises the following steps: there is provided a component of a battery pack, comprising:

a base;

and the guide parts are arranged on the base part and distributed along a second direction, each guide part extends along the same direction of the first direction, a guide groove along the first direction is defined between every two adjacent guide parts, the front ends of the two adjacent guide parts define an inlet of the guide groove, and the second direction is not parallel to the first direction.

Preferably, each of the guide portions has an elongated shape.

Preferably, both sides of the front end of the guide portion are provided with chamfers or fillets so that the entrance of the guide groove is gradually widened from the inside to the outside.

Preferably, the component of the battery pack is a PCB.

Preferably, at least part of the guide part is provided with a pad.

Preferably, the pad is provided at the head and/or tail of the guide portion.

Preferably, the number of the pads on one of the guides is at least one and is distributed along the first direction.

Preferably, the base portion and/or the guide portion of the component of the battery pack are provided with a connection portion that is electrically connected to the pad.

Preferably, the second direction is perpendicular to the first direction.

The technical scheme adopted by the invention for solving the technical problem comprises the following steps: the battery pack comprises a battery cell and the components of the battery pack, wherein the battery cell comprises a main body part and two tabs arranged on the main body part, and the tabs of each battery cell are correspondingly arranged in one guide groove.

Preferably, two tabs are arranged at the edge of the main body part at intervals.

Preferably, for each battery cell, two tabs are arranged along the guide groove.

Preferably, the tabs of the adjacent battery cells are bent towards each other and electrically connected.

Preferably, the cells are connected in series or in parallel.

Preferably, the component of the battery pack is a PCB, at least part of the guide part is provided with a pad, and at least part of the tab is located beside the pad and electrically connected with the pad.

Preferably, the base portion and/or the guide portion of the component of the battery pack are provided with a connection portion that is electrically connected to the pad.

The technical scheme adopted by the invention for solving the technical problem comprises the following steps: provided is a battery cell assembly method, including the steps of:

s001: providing components of the battery pack described above;

s103: aligning a tab of a battery cell with the guide groove of the component of the battery pack, and entering along the guide groove to assemble the battery cell with the component of the battery pack;

if the number of the battery cells is at least two, the battery cells are assembled in sequence or at least two battery cells are assembled simultaneously, wherein the tab of one battery cell correspondingly enters one guide groove.

Preferably, the component of the battery pack is a PCB, and at least a portion of the guide portion is provided with a pad for electrically connecting with the tab of the battery cell;

the S103 includes: enabling the lug of the battery cell to be beside the bonding pad;

the battery cell assembly method further comprises the steps of:

s201: bending the lug towards the corresponding bonding pad;

s301: and electrically connecting the lug with the corresponding bonding pad.

Preferably, before the step S103, the method further comprises the step S101: and fixing the components of the battery pack on a second support surface parallel to the second direction and a third support surface parallel to the first direction.

Preferably, the S201 includes: and enabling the battery cell to cling to a first supporting surface, aligning the battery cell to the guide groove along the first direction, and entering along the guide groove until the battery cell abuts against a second supporting surface, wherein the first supporting surface is parallel to the second direction and the first direction, and the second supporting surface is parallel to the second direction and is perpendicular to the first supporting surface.

Preferably, between S201 and S301, a step S202 is further included: and fixing the battery cell along the second direction.

The technical scheme of the invention at least has the following beneficial effects: the pole lugs of each battery cell are arranged in one guide groove, so that the pole lugs of each battery cell are not in mutual contact, the risk of contact short circuit is avoided, and the battery pack and the component and the battery cell assembly method are suitable for automatic battery cell assembly with high efficiency and low cost.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural view of components of a battery pack according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of components of a battery pack according to another embodiment of the present invention.

Fig. 3 is a schematic structural view of a battery pack according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of components of the battery pack of fig. 2 applied to a battery cell assembly method.

Fig. 5 is a flow chart of a battery cell assembly method according to an embodiment of the invention.

The reference numerals in the figures denote: the battery pack comprises a component 1 of the battery pack, a base 11, a connecting portion 111, a guide portion 12, a welding plate 121, a guide groove 13, an inlet 131, a battery cell 2, a tab 21, a main body portion 22, a battery cell mandril 3, a first direction 41, a second direction 42, a first supporting surface 51, a second supporting surface 52, a third supporting surface 53, a battery cell grabbing tool 6 and the battery pack 7.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that if the terms "front", "back", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are used herein to indicate an orientation or positional relationship, they are constructed and operated in a specific orientation based on the orientation or positional relationship shown in the drawings, which is for convenience of describing the present invention, and do not indicate that the device or component being referred to must have a specific orientation, and thus, should not be construed as limiting the present invention. It is also to be understood that, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "disposed," and the like, if used herein, are intended to be inclusive, e.g., that they may be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. If the terms "first", "second", "third", etc. are used herein only for convenience in describing the present technical solution, they are not to be taken as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Referring to fig. 1, a component 1 of a battery pack in one embodiment of the present invention includes:

a base 11;

and a plurality of guide portions 12 arranged on the base portion 11 and distributed at intervals along a second direction 42, wherein each guide portion 12 extends along the same direction of the first direction 41, a guide groove 13 along the first direction 41 is defined between two adjacent guide portions 12, the front ends of two adjacent guide portions 12 define an inlet 131 of the guide groove 13, and the second direction 42 is not parallel to the first direction 41.

Part 1 of this group battery can be used for assembling electric core 2 of group battery, is particularly useful for the equipment of soft packet of lithium cell group battery electric core, during the equipment, because utmost point ear 21 of an electric core 2 establishes in a guide way 13, so the utmost point ear 21 of each electric core 2 does not contact each other, avoids taking place the risk of contact short circuit to be applicable to high-efficient, low-cost automatic electric core assembly.

The component 1 of the battery pack is preferably plate-shaped as a whole, with the base 11 extending in the second direction 42 in the shape of a long strip. Each guide portion 12 has an elongated plate shape, and the guide portions 12 are parallel to each other.

Two sides of the front end of each guide part 12 are provided with chamfers or fillets, and the chamfers or fillets of two adjacent guide parts 12 are opposite to each other, so that the inlet 131 of each guide groove 13 is gradually wide from inside to outside, and the tab 21 of the battery cell 2 can conveniently enter the guide groove 13 from the inlet 131. The width of the guide groove 13 is smaller than the width of the guide portion 12.

Referring to fig. 2, the component 1 of the battery pack is preferably a PCB, the base 11 and the guide 12 are different parts of the PCB, and at least a part of the guide 12 is provided with a pad 121 for electrically connecting with the tab 21 of the electric core 2; the number of the pads 121 on one guide portion 12 may be one, or may be at least two and spaced apart in the first direction. In the embodiment of fig. 2, each guide 12 is provided with pads 121, and the number of pads 121 on one guide 12 is two. The base 11 and/or the guide 12 of the component 1 of the battery pack is provided with a connection portion 111, the connection portion 111 is electrically connected to the pad 121, the connection portion 111 may be a plug portion for plugging an electronic component or a wire, and an external circuit may be connected to the connection portion 111 to collect a signal of the cell 2.

The bonding pad 121 is disposed on the front surface of the head and/or the tail of the guide portion 12, and when the tab 21 of the electric core 2 enters along the guide slot 13, the tab 21 can be electrically connected to the bonding pad 121 after being bent.

The component 1 of the battery pack may also be of a fibrous or plastic material, such as a fibreboard or a plastic board, instead of a PCB; the component 1 of the battery pack may not be provided with the pad 121.

In the above solution, the second direction 42 is preferably perpendicular to the first direction 41.

Referring to fig. 3, a battery pack 7 according to an embodiment of the present invention includes a battery cell 2 and the above-mentioned component 1 of the battery pack, where the battery cell 2 includes a main body portion 22 and tabs 21 provided on the main body portion 22, and the tab 21 of each battery cell 2 is correspondingly provided in one of the guide slots 13 of the component 1 of the battery pack; when the number of the battery cells 2 is at least two, the battery cells 2 are sequentially arranged side by side along the second direction.

This group battery is because the utmost point ear 21 of an electric core 2 establishes in a guide way 13, so the utmost point ear 21 of each electric core 2 does not contact each other, avoids taking place the risk of contact short circuit to be applicable to high-efficient, the low-cost automatic electric core assembly.

The battery pack 7 can be a soft-package lithium battery pack, a main body part 22 of the battery cell 2 is in a relatively flat block shape, the two tabs 21 are arranged at the edge of the main body part 22 at intervals, and the tabs 21 are in a sheet shape and are soft; for each cell 2, tabs 21 are provided along the guide grooves 13.

The tabs 21 of the adjacent battery cells 2 are oppositely bent and electrically connected, and the battery cells 2 are connected in series or in parallel.

The component 1 of the battery pack is preferably a PCB, at least part of the guide part 12 is provided with a pad 121, and at least part of the tab 21 is located beside the pad 121, bent towards the pad 121 and electrically connected with the pad 121. The base 11 and/or the guide 12 of the component 1 of the battery pack is provided with a connection portion 111, the connection portion 111 is electrically connected to the pad 121, the connection portion 111 may be a plug portion for plugging an electronic component or a wire, and an external circuit may be electrically connected to the connection portion 111 to collect a signal of the cell 2.

The battery cell assembly method according to an embodiment of the present invention may be used in combination with the component 1 of the battery pack. The battery cell assembling method comprises the following steps:

s001: providing a component 1 of the battery pack described above;

s103: aligning a tab 21 of one cell 2 of the lithium battery with a guide groove 13 of a component 1 of the battery pack, and entering along the guide groove 13 (i.e. along a first direction 41) to assemble the cell 2 with the component 1 of the battery pack;

if the number of the electric cores 2 is at least two, the electric cores 2 are assembled in sequence or at least two electric cores 2 are assembled simultaneously, wherein the tab 21 of one electric core 2 correspondingly enters one guide groove 13.

In the battery cell assembling method, because the tab 21 of one battery cell 2 is arranged in one guide groove 13, the tabs 21 of the battery cells 2 are not in mutual contact, the risk of contact short circuit is avoided, and the method is suitable for automatic battery cell assembling with high efficiency and low cost.

Since the tab of the battery cell of the soft-package lithium battery pack is generally sheet-shaped and relatively soft, the assembly method is particularly suitable for assembling the battery cell of the soft-package lithium battery pack.

Referring to fig. 4-5, further, the component 1 of the battery pack is preferably a PCB, and at least a portion of the guide portion 12 is provided with a pad 121 for electrically connecting with the tab 21 of the battery cell 2;

s103 includes: a tab 21 of the battery cell 2 is arranged beside the bonding pad 121;

the battery cell assembly method further comprises the steps of:

s201: bending the tab 21 toward the corresponding pad 121 along the edge of the guide portion 12;

s301: the tab 21 is electrically connected to the corresponding pad 121, which may be typically welded.

Referring to fig. 4-5, step S102 may be further included before step S103: and flattening the lug 21 of the battery cell 2 by a roller tool so as to flatten the lug 21.

Referring to fig. 4-5, before S103, a step S101 may be further included: the component 1 of the battery pack is fixed to the second support surface 52 and the third support surface 53, the second support surface 52 being parallel to the second direction 42 and the third support surface 53 being parallel to the first direction 41, wherein the base 11 is connected to the second support surface 52 and the outermost guide 12 adjacent to the third support surface 53 is connected to the third support surface 53.

Referring to fig. 4-5, S201 may include: the battery cell 2 is grasped by the battery cell grasping tool 6, the bottom surface of the battery cell 2 is tightly attached to the first support surface 51, and is aligned with the guide groove 13 along the first direction 41, and enters along the guide groove 13 until the side surface of the soft package battery cell 2 abuts against the second support surface 52, wherein the first support surface 51 is parallel to the second direction 42 and the first direction 41, and the second support surface 52 is parallel to the second direction 42 and is perpendicular to the first support surface 51. (the core of this step lies in aligning the tab 21 of the electric core 2 with the guide groove 13, positioning the tab 21 of the electric core 2, and not generating the risk of contact short circuit with the tab 21 of other electric cores 2, as for whether the electric core grasping tool 6 is used, it is not strictly required, or it may adopt the transmission + push mode to install the electric core 2, and position the tab 21 of the electric core 2 beside the pad 121 of the guide part 12). The cell gripping tool 6 may be a suction cup.

Referring to fig. 4-5, between S201 and S301, step S202 may be further included: the soft-packaged battery cell 2 is fixed along the second direction 42 through the battery cell ejector rod 3 without shaking; (the cell ejector pin 3 and the process are not required, and the cell ejector pin 3 can be removed when the second direction 42 is the vertical ground direction; even if the first supporting surface 51 is a horizontal surface, the cell ejector pin 3 may not be needed, and the abutting of the cell 2 by the cell ejector pin 3 is only an effective method for preventing the cell 2 from inclining and loosening).

Referring to fig. 4-5, between S202 and S301, step S203 may be further included: the cell gripping tool 6 is released and moved away in the direction opposite to the second direction 42.

Referring to fig. 4-5, S301 may include: the tab 21 of the battery cell 2 is bent towards the corresponding bonding pad 121 by the battery cell tab bending tool, and the tab 21 is rolled, so that the tab 21 is tightly attached to the bonding pad 121.

In the above solution, the first support surface 51, the second support surface 52 and the third support surface 53 are preferably perpendicular to each other two by two.

The execution sequence of the steps of the battery pack and cell assembling method can be as follows: s001, S101, S102, S103, S201, S202, S203, S301; but is not limited thereto.

The core of the battery pack, the component 1 of the battery pack and the battery cell assembly method lies in the idea of the component 1 of the battery pack, the component 1 of the battery pack is not only a tab 21 positioning tool, but also a material for series connection or parallel connection of battery cells and signal acquisition of the battery cells, the positioning and assembly of the tab 21 are realized in one step, and convenient preset conditions are provided for procedures of tab 21 folding and the like. This scheme can not only promote electric core assembly efficiency greatly, more makes the automatic assembly of electric core 2 become reality, or will become electric core 2 low-cost automatic assembly and be difficult to the method of circumventing. Through the assembly automation, the labor cost expenditure of the battery cell assembly is further reduced, and the product assembly yield and the assembly efficiency are improved. The cell assembling method has wider adaptability to the post-welding process, and is not only suitable for manual soldering and automatic soldering, but also suitable for laser welding and resistance welding.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as it will be apparent to those skilled in the art that various modifications, combinations and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.