CN209754218U - Auxiliary welding device for rechargeable battery - Google Patents

Abstract

the utility model provides an auxiliary welding device for rechargeable battery, an electric core and a circuit board assembly for fixing a position rechargeable battery, electric core can be connected with circuit board assembly electricity through electrically conductive base plate, auxiliary welding device includes first location frock and second location frock, first location frock has the circuit board assembly recess that is used for spacing circuit board assembly and the electrically conductive base plate recess that is used for spacing electrically conductive base plate, circuit board assembly recess and electrically conductive base plate recess one-to-one, second location frock has the electric core recess that is used for spacing electric core, electric core groove opening is downward, electric core groove position in electrically conductive base plate recess the top and with electrically conductive base plate recess upper and lower correspondence. The utility model provides an auxiliary welding device can be convenient for use mechanical welding device with electric core through electrically conductive base plate and circuit board assembly welding together to make rechargeable battery's manufacture more mechanized, automatic, can improve production efficiency, reduction in production cost.

Description

auxiliary welding device for rechargeable battery

Technical Field

the utility model relates to a battery technology field, and more specifically relate to an auxiliary welding device for rechargeable battery.

Background

In recent years, rechargeable batteries have been widely used in various portable electric and electronic devices, such as toys, handheld devices, and the like, which place increasing demands on the energy storage capacity of rechargeable batteries. Lithium ion rechargeable batteries are being increasingly used in the above fields because of their high energy, high power discharge, environmental protection, and other advantages.

the existing rechargeable battery generally includes a casing, and a battery core, a circuit board assembly and other elements arranged in the casing. The cell is typically soldered directly to the circuit board by two wires. In the event that the rechargeable battery is accidentally dropped or collided with other objects, the soldering point of the lead may be loosened and even disconnected from the circuit board.

During the manufacturing process of the rechargeable battery, the assembly between the circuit board and the battery core is usually manually operated by an operator, which increases the production cost.

accordingly, there is a need for an auxiliary welding device for rechargeable batteries that at least partially solves the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

In order to solve the above problem, according to an aspect of the present invention, there is provided an auxiliary welding device for a rechargeable battery, for positioning a core and a circuit board assembly of the rechargeable battery, the core being electrically connectable to the circuit board assembly through a conductive substrate, the auxiliary welding device comprising:

A first positioning fixture, the first positioning fixture having:

The circuit board assembly groove is used for limiting the circuit board assembly, and the opening of the circuit board assembly groove is upward; and

The conductive substrate groove is used for limiting the conductive substrate, the opening of the conductive substrate groove is upward, the circuit board assembly grooves correspond to the conductive substrate groove one by one, and the conductive substrate groove is communicated with the corresponding circuit board assembly groove; and

A second positioning tool which is provided with a battery cell groove for limiting the battery cell, wherein the opening of the battery cell groove is downward,

And under the state that the second positioning tool is placed on the first positioning tool, the battery cell groove is positioned above the conductive substrate groove and vertically corresponds to the conductive substrate groove.

According to the scheme, the auxiliary welding device can be used for positioning the battery core and the circuit board assembly in the rechargeable battery, so that the battery core is welded with the circuit board assembly through the conductive substrate. After the battery core and the circuit board assembly are positioned, the battery core and the circuit board assembly can be welded to the conductive substrate by using a mechanical welding device, so that the production and the manufacture of the rechargeable battery are more mechanical and automatic, the production efficiency can be improved, and the production cost can be reduced.

Optionally, the conductive substrate groove extends along a first direction, and the circuit board assembly groove is disposed at an end of the conductive substrate groove along the first direction.

Optionally, the circuit board assembly recesses are arranged in rows in a second direction perpendicular to the first direction.

Optionally, the size of the second positioning tool in the first direction is smaller than the size of the first positioning tool in the first direction, and the battery cell groove is a through groove extending in the first direction.

Optionally, the adjacent circuit board assembly grooves are communicated with each other to limit the connecting plate connected between the adjacent circuit board assemblies.

Optionally, the first positioning tool further comprises a positioning groove for limiting a moving plate connected with the circuit board assembly.

Optionally, the circuit board assembly recess has a depth greater than the conductive substrate recess and/or the circuit board assembly recess is configured as a stepped recess.

Optionally, the shape of the circuit board assembly groove corresponds to the shape of the circuit board assembly, and the shape of the conductive substrate groove corresponds to the shape of the conductive substrate.

Optionally, the shape of the circuit board assembly groove is circular, and/or the shape of the conductive substrate groove is elongated.

Optionally, the conductive substrate groove includes a body portion and two limiting portions spaced apart from the body portion, and the limiting portions protrude outward from a side surface of the body portion to limit the cell connecting portion of the conductive substrate.

Optionally, the auxiliary welding device is used for positioning at least two groups of battery cores and circuit board assemblies simultaneously, wherein adjacent circuit board assemblies are connected together through a connecting plate, and at least one of a stamp hole and a transverse cut is arranged between the connecting plate and the circuit board to facilitate separation.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings embodiments of the invention and the description thereof for the purpose of illustrating the devices and principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is an exploded schematic view of a rechargeable battery according to a preferred embodiment of the present invention;

fig. 2 is a schematic longitudinal cross-sectional view of the rechargeable battery shown in fig. 1;

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

FIG. 4 is a schematic structural view of the conductive substrate shown in FIG. 1, wherein the conductive substrate is connected to a circuit board assembly;

FIG. 5 is an exploded perspective view of the conductive substrate shown in FIG. 4;

Fig. 6 is a schematic perspective view of the battery cell and the conductive substrate shown in fig. 1, wherein the conductive substrate is connected to the circuit board assembly, and the conductive substrate is connected to the battery cell;

FIG. 7 is a schematic diagram of a plurality of circuit board assemblies prior to being soldered to a conductive substrate;

FIG. 8 is another schematic structural view similar to FIG. 7;

FIG. 9 is an enlarged view of portion A of FIG. 8;

FIG. 10 is a side view of FIG. 9;

Fig. 11 is a perspective view of an auxiliary welding device according to a preferred embodiment of the present invention; and

Fig. 12 is a partially enlarged view of a portion B in fig. 11.

Detailed Description

in the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The present invention is described in detail below with reference to the preferred embodiments, however, the present invention can have other embodiments in addition to the detailed description, and should not be construed as being limited to the embodiments set forth herein.

It is to be understood that the terms "a," "an," and "the" as used herein are intended to describe specific embodiments only and are not to be taken as limiting the invention, which is intended to include the plural forms as well, unless the context clearly indicates otherwise. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only and are not limiting.

Ordinal words such as "first" and "second" are referred to in this application as labels only, and do not have any other meanings, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present invention and do not limit the present invention.

the utility model provides an auxiliary welding device can be used for rechargeable battery. And more particularly to a circuit board assembly and a battery cell for positioning a rechargeable battery so that the circuit board assembly and the battery cell can be molded as an integral piece by soldering to a conductive substrate.

The structure of a rechargeable battery to which the welding-assist apparatus of the present invention can be applied will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present invention provides a rechargeable battery 100 including a casing 110, an electrode cap, and a circuit board assembly 120 and a battery cell 140 disposed in the casing 110. The battery cell 140 is electrically connected to the circuit board assembly 120, and the circuit board assembly 120 can be electrically connected to two electrode caps with opposite polarities. Both electrode caps are provided at the case 110.

The housing 110 extends in a predetermined direction and has an accommodation space closed in a circumferential direction based on the predetermined direction. In the illustrated embodiment, the housing 110 is illustratively shown as a thin-walled structure having a circular cylindrical shape. The predetermined direction is the length direction D of the rechargeable battery 100. The battery cell 140 and the circuit board assembly 120 may be placed in the receiving space of the case 110. Alternatively, the housing 110 may be made of a conductive metal material such as steel. It will be understood by those skilled in the art that the structure of the housing 110 is not limited to the present embodiment, and the housing 110 may be configured as a rectangular parallelepiped, a square cube, or any other suitable shape structure as required.

A first end of the case 110 in the length direction D has an opening 111, and a first electrode cap (negative electrode cap 131) is provided at the first end. The negative electrode cap 131 covers the opening 111. The negative cap 131 can be connected to the circuit board assembly 120, but is insulated from the case 110. Optionally, a transparent insulating ring 160 may be disposed between the negative electrode cap 131 and the case 110 to insulate them from each other. The insulating ring 160 may be made of an insulating material having flexibility.

a second electrode cap (positive electrode cap 132) is provided at a second end of the case 110 opposite to the first end. The positive electrode cap 132 forms one closed end with the housing 110. The positive electrode cap 132 is electrically connected to the circuit board assembly 120 through the case 110, and thus it can be seen that the polarity of the case 110 and the negative electrode cap 131 is opposite. Although the first electrode cap is exemplarily shown as the negative electrode cap 131 and the second electrode cap is the positive electrode cap 132, those skilled in the art will appreciate that the two electrode caps may be oppositely disposed.

Cell 140 is disposed below negative cap 131 and proximate to the second end of casing 110. Two connectors 141 (a positive connector 141a and a negative connector 141b) are led out from the battery cell 140 for connecting with the circuit board assembly 120. The battery cells 140 extend in the length direction D from the second end of the casing 110 to the circuit board assembly 120. The battery cell 140 is provided with mounting plates 143 at two ends thereof, and the connecting member 141 is led out from the mounting plates 143.

It should be noted that directional terms such as "below," "up," "top," and the like are referred to herein with respect to the rechargeable battery 100 in an upright state and the circuit board assembly 120 is located above the battery cell 140 (as shown in fig. 1 to 3).

The circuit board assembly 120 is proximate to the first end of the housing 110. Circuit board assembly 120 is disposed between cells 140 and negative cap 131. Specifically, the circuit board assembly 120 includes a circuit board 121 and an electronic component 122 disposed on the circuit board 121. The outer peripheral edge of the circuit board 121 at least partially abuts against the inner surface of the housing 110 to conduct electricity. That is, the outer peripheral edge of the circuit board 121 is configured as a conductive portion. A plurality of electronic components 122 of the same type or different types may be provided on the circuit board 121 according to functional requirements thereof. A first side (upper side) of the circuit board 121 facing the negative electrode cap 131 is connected to the negative electrode cap 131. A second side (lower side) of the circuit board 121 opposite to the first side can be connected to the battery cell 140. Alternatively, the negative cap 131 may be fixed on the first side of the circuit board 121 by soldering, or the negative cap 131 may be abutted to the circuit board 121 by snap-fitting, or mounted to the circuit board assembly 120 by a combination of both. The illustrated embodiment shows that the negative cap 131 is snapped at the opening 111 of the case 110 by the above-described structure of the insulating ring 160 and the case 110.

Further, as shown in fig. 3, the case 110 may have a wire binding portion 113 for supporting the circuit board assembly 120, the wire binding portion 113 being configured to be recessed inward from an outer surface of the case 110. The wire tie 113 may be configured as a U-shaped structure recessed inward from the outer surface of the case 110, and both ends of the U-shaped structure are connected to the body portion of the case 110, respectively. Preferably, a surface of the wire binding portion 113 for supporting the circuit board assembly 120 upward is a plane. Specifically, the top surface of the wire tie 113 is configured as a plane extending in the horizontal direction for supporting the circuit board 121 and electrically conducting in abutment with the circuit board 121. The circuit board assembly 120 in this embodiment can be limited between the negative electrode cap 131 and the wire binding portion 113, specifically, the insulating ring 160 is used to press the circuit board assembly 120 on the top of the wire binding portion 113, so as to fix the circuit board assembly 120.

The rechargeable battery 100 further includes a conductive substrate 150, and the conductive substrate 150 is disposed within the case 110. Two electrodes of the battery cell 140 are connected to the electrodes of the circuit board assembly 120 through the conductive substrate 150 in a one-to-one correspondence. Specifically, the conductive substrate 150 extends along the length direction D and is located between the battery cell 140 and the casing 110. The positive electrode connector 141a and the negative electrode connector 141b are respectively disposed at both ends of the battery cell 140 in the length direction D. As shown in fig. 3, the positive electrode connector 141a extends upward to be connected to the upper end of the conductive substrate 150. The negative electrode connector 141b extends downward to be connected to the lower end of the conductive substrate 150. The positive and negative electrode connectors 141a and 141b may be electrically connected to the conductive substrate 150, respectively, and the conductive substrate 150 is electrically connected to the circuit board 121, so that the two electrodes of the battery cell 140 are correspondingly connected to the two electrodes of the circuit board 121 (specifically, to the two electrical connection parts 125 mentioned below). By providing the conductive substrate 150, the welding strength between the two connectors 141 of the battery cell 140 and the circuit board 121 can be improved, so that the connection between the battery cell 140 and the circuit board 121 is more secure.

In the present embodiment, the conductive substrate 150 is configured as a thin plate-like structure, and the conductive substrate 150 is bent after mounting (fig. 1) and unfolded before mounting (fig. 4 and 6). That is, the conductive substrate 150 may be a bendable member made of a flexible material. After being mounted, the conductive substrate 150 can be not only tightly attached to the outer side of the battery cell 140, but also bent at a predetermined position, and disposed in the housing 110 in the above-described connection manner. The bent conductive substrate 150 can greatly reduce the accommodation space occupied in the housing 110, and the structure is more compact. The conductive substrate 150 is a flat plate that is unfolded before installation, which may facilitate placing the cell 140 on the conductive substrate 150 for soldering during manufacturing.

as shown in fig. 4, the conductive substrate 150 has a circuit board connection portion 158 for connection with the two electrical connection portions 125 of the circuit board 121, respectively, and two cell connection portions 159 for one-to-one connection with the two connection pieces 141 of the cells 140. The circuit board connection portion 158 and the two cell connection portions 159 are spaced apart in the length direction D. The battery cell 140 can be disposed between two cell connection portions 159. Specifically, in the illustrated embodiment, the circuit board connection portion 158 is disposed at a first end (i.e., an upper end) of the conductive substrate 150, the cell positive electrode connection portion 159a is adjacent to the circuit board connection portion 158, and the cell negative electrode connection portion 159b is disposed at a second end (opposite the first end, i.e., a lower end) of the conductive substrate 150. The positive connector 141a is located at the cell positive connection 159a, and the negative connector 141b is located at the cell negative connection 159 b.

During the manufacturing process, the cell 140 may be placed on the conductive substrate 150 based on the positions of the two cell connection portions 159, so as to weld the cell 140 and the conductive substrate 150 together. Optionally, the cell connection portion 159 protrudes outward from the outer surface of the conductive substrate body so as to position the conductive substrate 150 on the tooling table. The outwardly protruding portion of the cell connection portion 159 has an arc-shaped edge. The distance between the two cell connection portions 159 is substantially the same as the length of the battery cells 140 (i.e., the dimension in the first direction).

As shown in fig. 5, the conductive substrate 150 may include a three-layered structure, two conductive bases 151 disposed at intervals, respectively, and an upper insulator 152a and a lower insulator 152b covering upper and lower surfaces of the conductive bases 151, respectively. In other words, the conductive substrate 150 is an integrated piece molded by the conductive base 151, the upper insulator 152a, and the lower insulator 152 b. The first end of the conductive base 151 extends beyond the upper and lower insulators 152a and 152b to form the above-described circuit board connection part 158. In other words, the circuit board connection portion 158 exposes the above-described insulator to facilitate soldering.

The conductive base 151 is a sheet structure made of a copper material. The upper insulator 152a and the lower insulator 152b are each a sheet-like structure made of an insulating material, whose peripheral edges abut against the surfaces opposite to each other and are joined together by means of adhesion or heat fusion or the like to sandwich the conductive base 151 therebetween.

The upper insulator 152a is provided with a first opening 156 and a second opening 157 spaced apart from the first opening 156 to expose the conductive base 151. The two conductive bases 151 are connected to the connectors 141 through the first opening 156 and the second opening 157, respectively, in a one-to-one correspondence. It is understood that the two openings define the location of the cell connection portion 159. The first opening 156 is near a first end of the conductive substrate 150 (the end connected to the circuit board assembly 120). The second opening 157 is disposed at a second end of the conductive substrate 150.

Specifically, referring to fig. 4 and 5, the conductive base 151 includes a positive electrode base 153 and a negative electrode base 154 extending from a first end of the conductive base 151 toward a second end thereof (opposite to the first end). The first connection end 153a of the positive electrode base 153 is used for connection with the positive electrode electrical connection portion 125a of the circuit board 121. The second connection end 153b of the positive electrode base 153 extends to the first opening 156 and is at least partially exposed, or the second connection end 153b of the positive electrode base 153 extends beyond the first opening 156, to enable the positive electrode base 153 to be welded with the positive electrode connector 141a at the first opening 156. It is understood that the first opening 156 defines the location of the cell positive electrode connection portion 159 a. The first connection end 154a of the negative electrode base 154 is used for connection with the negative electrode electrical connection portion 125b of the circuit board 121. The second connection end 154b of the negative electrode base 154 extends to the second opening 157 and is at least partially exposed, or the second connection end 154b of the negative electrode base 154 extends beyond the second opening 157 to enable the negative electrode base 154 to be welded with the negative electrode connector 141b at the second opening 157. It is understood that the second opening 157 defines the location of the cell positive electrode connection portion 159 a.

It is to be understood that "upper" and "lower" of the "upper insulator 152 a" and the "lower insulator 152 b" are relative to the horizontally disposed conductive base plate 150 capable of supporting the battery cells 140 upward.

The structure of an auxiliary welding device according to a preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

the auxiliary soldering structure may be used to simultaneously position at least two sets of the battery cells 140 and the circuit board assembly 120. In this embodiment, to facilitate the simultaneous placement of the at least two circuit board assemblies 120 on the auxiliary soldering structure, as shown in fig. 7, the at least two circuit board assemblies 120 may be adjacent to each other and detachably connected together before being soldered to the battery cells 140. In the illustrated embodiment, adjacent circuit board assemblies 120 may be connected together via a connection plate 191. For example, the first circuit board assembly 120a is connected with the second circuit board assembly 120b through the first connection plate 191 a. Alternatively, the outermost circuit board assembly 120 may be provided with a moving plate 192 to facilitate movement.

A separable structure may be provided between the connection plate 191 and the circuit board 121, for example, the separable structure may be a stamp hole 193. Therefore, after the battery cell 140 and the circuit board assembly 120 are soldered to the conductive substrate 150, the circuit board assembly 120 can be disconnected from the connection board 191 by bending the stamp hole 193. In addition, as shown in FIGS. 8-10, the detachable structure includes a transverse cut 194 in addition to the stamp aperture 193. The transverse cut 194 extends in the transverse direction and through the web 191. The provision of the transverse cut-outs 194 further facilitates the disconnection of the circuit board assembly 120 from the connection plate 191.

As shown in fig. 11, the auxiliary welding device includes a first positioning tool 170 and a second positioning tool 180 that can be placed on the first positioning tool 170. The first positioning tool 170 has a circuit board assembly groove 171 for limiting the circuit board assembly 120 and a conductive substrate groove 172 for limiting the conductive substrate 150. The circuit board assembly groove 171 is recessed downward from the upper surface of the first positioning tool 170, and opens upward so as to receive the circuit board assembly 120. The conductive substrate recess 172 is recessed downward from the upper surface of the first positioning tool 170, and opens upward to receive the conductive substrate 150. The second positioning tool 180 has a cell recess 181 for limiting the cell 140. The cell recess 181 is recessed upward from the lower surface of the second positioning tool 180, and is open downward so as to receive the cell 140.

The circuit board assembly grooves 171 may correspond one-to-one to the conductive substrate grooves 172, and the conductive substrate grooves 172 may communicate with the corresponding circuit board assembly grooves 171. In a state where the second positioning tool 180 is placed on the first positioning tool 170, the cell recess 181 may be located above the conductive substrate recess 172 and vertically correspond to the conductive substrate recess 172. Accordingly, the first positioning tool 170 may simultaneously position the circuit board assembly 120 and the conductive substrate 150. The second positioning tool 180 may keep the position of the battery cell 140 on the conductive substrate 150 unchanged.

the conductive substrate groove 172 may extend in the first direction D1. The first direction D1 is a horizontal direction selected based on the first positioning fixture 170 (when the first positioning fixture 170 is horizontally placed). It is understood that, when the auxiliary welding device is used, the first direction D1 is a direction parallel to the length direction of the cell recess 181. The circuit board assembly groove 171 can be disposed at an end of the conductive substrate groove 172 in the first direction D1. In other words, the conductive substrate groove 172 extends to the circuit board assembly groove 171 in the first direction D1.

The circuit board assembly grooves 171 may be arranged in rows in a second direction D2 perpendicular to the first direction D1. The cell grooves 181 are also arranged in rows in a second direction D2 perpendicular to the first direction D1. It is understood that the cell recess 181 is described herein based on the second positioning tool 180 in a use state. The second direction D2 is another horizontal direction perpendicular to the first direction D1. In the illustrated embodiment, 6 circuit board assembly recesses 171 are spaced apart and are used to position 6 circuit board assemblies 120, respectively. The 6 conductive substrate recesses 172 are spaced apart and are used to position the 6 conductive substrates 150, respectively. The 6 cell recesses 181 are spaced apart and used to limit the cells, respectively. Specifically, the first circuit board assembly 120a is retained in the first circuit board assembly groove 171 a. The first conductive substrate 150a is retained in the first conductive substrate recess 172 a. After the first cell 140a is placed on the first conductive substrate 150a, the second positioning tool 180 is placed on the first positioning tool 170, and the first cell recess 181a receives the first cell 140 a.

The adjacent circuit board assembly grooves 171 communicate with each other to limit the connection board. Specifically, as shown in fig. 12, the first connection plate 191a (fig. 7) can be retained in the first connection groove 173. First positioning fixture 170 may further have a positioning slot 174 for limiting moving plate 192. Positioning slot 174 extends beyond the side of first positioning fixture 170 and receives a portion of moving plate 192.

the dimension of the second positioning tool 180 along the first direction D1 may be smaller than the dimension of the first positioning tool 170 along the first direction D1, and the cell groove 181 is a through slot extending along the first direction D1. The shape of the circuit board assembly groove 171 may correspond to the shape of the circuit board assembly 120, and the shape of the conductive substrate groove 172 may correspond to the shape of the conductive substrate 150. In the illustrated embodiment, the circuit board assembly recess 171 may be circular in shape. The conductive substrate groove 172 may have a long bar shape.

The conductive substrate groove 172 may further include a body portion 175 and two limiting portions 176 (fig. 11) spaced apart by the body portion 175, where the limiting portions 176 are used to limit the cell connection portions 159. When the cell connection portion 159 is positioned in the positioning portion 176, the conductive substrate 150 is immovable in the horizontal direction. The stopper 176 protrudes outward from the side surface of the body 175. The depth of the circuit board assembly groove 171 may be greater than the depth of the conductive substrate groove 172, whereby the circuit board assembly groove 171 facilitates receiving an electronic component. The circuit board assembly recess 171 is configured as a stepped groove with a step facing upward so as to support the circuit board 121 upward and avoid the electronic component 122 from being pressed.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that many more modifications and variations can be made in accordance with the teachings of the present invention, all of which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (11)

1. An auxiliary welding device for a rechargeable battery for positioning a core and a circuit board assembly of the rechargeable battery, the core being electrically connectable to the circuit board assembly via an electrically conductive substrate, the auxiliary welding device comprising:

a first positioning fixture, the first positioning fixture having:

The circuit board assembly groove is used for limiting the circuit board assembly, and the opening of the circuit board assembly groove is upward; and

The conductive substrate groove is used for limiting the conductive substrate, the opening of the conductive substrate groove is upward, the circuit board assembly grooves correspond to the conductive substrate groove one by one, and the conductive substrate groove is communicated with the corresponding circuit board assembly groove; and

A second positioning tool which is provided with a battery cell groove for limiting the battery cell, wherein the opening of the battery cell groove is downward,

And under the state that the second positioning tool is placed on the first positioning tool, the battery cell groove is positioned above the conductive substrate groove and vertically corresponds to the conductive substrate groove.

2. The auxiliary soldering apparatus according to claim 1, wherein the conductive substrate groove extends in a first direction, and the circuit board assembly groove is provided at an end of the conductive substrate groove in the first direction.

3. The auxiliary welding apparatus of claim 2, wherein the circuit board assembly recesses are arranged in rows along a second direction perpendicular to the first direction.

4. The auxiliary welding device of claim 2, wherein a dimension of the second positioning tool in the first direction is smaller than a dimension of the first positioning tool in the first direction, and the cell groove is a through groove extending in the first direction.

5. The auxiliary welding device according to claim 1, wherein adjacent ones of the circuit board assembly recesses communicate with each other to restrain a connection plate connected between the adjacent circuit board assemblies.

6. The auxiliary welding device of claim 1, wherein the first positioning tool further comprises a positioning groove for limiting a moving plate connected with the circuit board assembly.

7. The auxiliary soldering apparatus according to claim 1, wherein the depth of the circuit board assembly recess is greater than the depth of the conductive substrate recess, and/or the circuit board assembly recess is configured as a stepped groove.

8. The auxiliary welding device according to claim 1, wherein the shape of the circuit board assembly groove corresponds to the shape of the circuit board assembly, and the shape of the conductive substrate groove corresponds to the shape of the conductive substrate.

9. The auxiliary welding device of claim 8, wherein the shape of the circuit board assembly groove is circular and/or the shape of the conductive substrate groove is elongated.

10. The auxiliary welding device of claim 1, wherein the conductive substrate groove comprises a body portion and two limiting portions spaced apart by the body portion, the limiting portions protruding outward from a side surface of the body portion to limit the cell connecting portion of the conductive substrate.

11. The auxiliary welding device of claim 1, wherein the auxiliary welding device is configured to position at least two sets of the battery cell and the circuit board assembly simultaneously, wherein adjacent circuit board assemblies are connected together via a connecting plate, and at least one of a stamp hole and a transverse cut is provided between the connecting plate and the circuit board to facilitate separation.