WO2021003966A1

WO2021003966A1 - Battery pack

Info

Publication number: WO2021003966A1
Application number: PCT/CN2019/121477
Authority: WO
Inventors: 孔钊; 朱艳玲
Original assignee: 天佑电器（苏州）有限公司
Priority date: 2019-07-09
Filing date: 2019-11-28
Publication date: 2021-01-14
Also published as: CN210224218U

Abstract

The present utility model relates to a battery pack, comprising a housing, a first circuit board arranged in the housing, and conductive cylinders partially arranged in the housing, wherein the conductive cylinders are electrically connected to the first circuit board; the first circuit board further comprises second through holes; and the conductive cylinders partially penetrate through the second through holes. The battery pack further comprises elastic conductors, wherein the conductive cylinders are electrically connected to the first circuit board by means of the elastic conductors; the elastic conductors comprise first ends and second ends; the first ends are welded to the conductive cylinders; and the second ends are welded to the first circuit board. According to the present utility model, the conductive cylinders are connected to the first circuit board by means of the elastic conductors; therefore, the rise in the temperature can be effectively reduced, thereby making same safer.

Description

Battery pack

Technical field

The utility model relates to a battery pack.

Background technique

The casing of the existing battery pack is provided with a conductive post, and the conductive post partially extends out of the casing and contacts the contact piece of the charging device to realize the electrical connection between the charging device and the battery pack. Only when the conductive post and the contact piece maintain continuous contact, The battery pack is in a charging state. At the same time, a circuit board is also arranged in the casing, and the circuit board is connected with the conductive column, so that the current can be transmitted to the circuit board through the conductive column, and the circuit board is transferred to the battery pack to realize charging.

The existing connection between the conductive column and the circuit board is mainly: the conductive column is welded to the circuit board to realize the electrical connection between the conductive column and the circuit board.

However, the above-mentioned connection method has the following problems: when the conductive column is used for a period of time, when the current passes through the conductive column and the circuit board, the resistance changes greatly, and the resistance change will cause the temperature rise and accumulation to rise, which brings certain safety risks.

Summary of the invention

In order to solve the problems existing in the prior art, the present invention aims to provide a battery pack.

The technical solution adopted by the present utility model to solve the above-mentioned technical problems is: a battery pack comprising a casing, a first circuit board arranged in the casing, a conductive column partially arranged in the casing, and the conductive The pillar is electrically connected to the first circuit board, wherein the first circuit board further includes a second through hole, and the conductive pillar partially penetrates the second through hole; the battery pack further includes an elastic conductor , The conductive pillar is electrically connected to the first circuit board through the elastic conductor; the elastic conductor includes a first end and a second end, the first end is welded to the conductive pillar, and the second end Soldering with the first circuit board.

Further, the first circuit board further includes a receiving portion, the second end includes a hook portion, and the hook portion is clamped in the receiving portion.

Further, the accommodating portion includes a stopper, the extension direction of the stopper is parallel to the plane where the first circuit board is located, the hook portion is connected with the stopper, and the accommodating portion is connected to the The hook is welded to connect the first circuit board and the elastic conductor.

Further, the extension direction of the first end is parallel to the movement direction of the conductive column, the conductive column further includes a docking portion, the first end is clamped to the docking portion, and the first end is connected to the The butt joint is welded.

Further, the elastic conductor further includes a guiding portion, the guiding portion includes a first guiding portion, the first guiding portion and the first end are connected by a first connection point, and the The first guiding part extends in a direction away from the first end with the first connection point as a starting point.

Further, the extending direction of the first guiding portion is substantially parallel to the plane where the first circuit board is located.

Further, the guiding part further includes a second guiding part, the first guiding part and the second guiding part are connected by a second connection point, and the second guiding part is connected by the second The connection point is the starting point and extends to the first circuit board, and the extension direction of the second guiding part is substantially perpendicular to the plane where the first circuit board is located.

Further, the guiding portion further includes a third guiding portion, the third guiding portion is connected to the second guiding portion through a third connection point, and the third guiding portion is connected to the third guiding portion The connection point is the starting point and extends in the circumferential direction until it is connected to the second end.

Further, the conductive column further includes a base and a connecting member at least partially received in the base, the base includes a receiving cavity, the connecting member is movably received in the receiving cavity, and the first The end is connected with the connecting piece, and when the connecting piece moves, the connecting piece drives at least part of the elastic conductor to move together.

Further, the elastic conductor includes a guiding part connected to the first end, and when the connecting member moves upward, the guiding part and the first end move upward together.

The beneficial effects of the present invention are:

The conductive pillar of the present invention is connected to the first circuit board through an elastic conductor, and the first end of the elastic conductor is welded to the conductive pillar, and the second end is welded to the first circuit board. On the one hand, the current is When the column is transferred to the first circuit board, the resistance change is small, and the temperature rise will not rise together; on the other hand, the elastic conductor is stably connected with the conductive column and the first circuit board and is not easy to fall off.

Description of the drawings

FIG. 1 is a schematic diagram of the structure of a battery pack of a preferred embodiment of the present invention;

Figure 2 is a cross-sectional view of the battery pack of the preferred embodiment of the present invention;

3 is a schematic diagram of the lower cover of the battery pack of the preferred embodiment of the present invention;

4 is a schematic diagram of the first circuit board of the preferred embodiment of the present invention;

Figure 5 is a partial enlarged view of area A in Figure 4;

Fig. 6 is a schematic diagram of the conductive pillar of the first embodiment of the present invention in a state;

7 is a schematic diagram of the conductive pillar of the first embodiment of the present invention in another state;

Figure 8 is a schematic diagram of the connecting piece of the first embodiment of the present invention;

9 is a schematic diagram of the conductive pillar of the second embodiment of the present invention in a state;

10 is a schematic diagram of the conductive pillar of the second embodiment of the present invention in another state;

11 is a schematic diagram of the conductive pillar of the third embodiment of the present invention in a state;

12 is a schematic diagram of the conductive pillar of the third embodiment of the present invention in another state;

13 is a schematic diagram of the conductive pillar of the fourth embodiment of the present invention in a state;

14 is a schematic diagram of the conductive pillar of the fourth embodiment of the present invention in another state;

Fig. 15 is a schematic diagram of an elastic conductor of a preferred embodiment of the present invention.

Detailed ways

Hereinafter, the present utility model will be described in detail with reference to the exemplary embodiments in the drawings. The terms used in the exemplary embodiment are selected as general terms used as widely as possible, but in certain cases, terms arbitrarily selected by the applicant are also used, and in this case, in the corresponding detailed description section Mention the meaning, so the concept of the utility model should not be understood by the literal meaning of the term, but by the given meaning of the term.

Since the concept of the present invention allows various changes and many exemplary embodiments, specific exemplary embodiments will be shown in the drawings and described in detail in the written description. However, this is not intended to limit the concept of the present utility model to a specific practice mode, and it should be understood that all changes, equivalents and substitutes that do not depart from the spirit and technical scope are included in the concept of the present utility model. In the description, when it is considered that the essence of the concept of the present invention may be unnecessarily obscured, some detailed description of the prior art is omitted.

In this specification, it should be understood that terms such as "including", "having", "including" and the like are intended to indicate that features, numbers, steps, actions, components, parts or combinations thereof are present in this specification, and are not intended to exclude possible Or the possibility of adding one or more other features, numbers, steps, actions, components, parts or combinations thereof.

The terms such as “unit”, “device”, “component”, “module” described in the specification refer to an element for performing at least one function or operation, and can be implemented in hardware or software or a combination of hardware and software. In addition, in addition to “modules” or “units” that must be implemented as specific hardware, multiple “modules” or multiple “units” may be integrally formed as at least one processing module.

Throughout the specification, it will also be understood that when an element is referred to as being "connected to" another element, it can be directly connected to the other element or electrically connected to the other element, and intermediate elements may also be present. In addition, when an element is partially "included", another element may be further included without excluding the existence of another element, unless otherwise stated.

Please refer to Figures 1 to 15, the present invention provides a battery pack 1. The battery pack 1 includes a casing 10, a conductive column 20, a first circuit board 30, an elastic conductor 40, a connecting wire 50, and a second circuit Board 60 and battery pack 70.

When the power of the battery pack 1 is insufficient, the user can connect the battery pack 1 to a charging device (not shown), and the battery pack 1 can store electrical energy for charging. Specifically, in this embodiment, the battery pack 1 includes a casing 10, the conductive column 20 is at least partially disposed in the casing 10, and the first circuit board 30 is disposed in the casing 10 , And the first circuit board 30 is electrically connected to the conductive pillar 20. When the battery pack 1 is electrically connected to the charging device, the conductive column 20 is connected to the first contact piece (not shown) of the charging device, and the current is transferred to the conductive pad through the first contact piece. Column 20; between the first circuit board 30 and the conductive column 20 is also provided with an elastic conductor 40, one end of the elastic conductor 40 is connected to the first circuit board 30, and the other end is connected to the conductive column 20 , The current is transmitted to the first circuit board 30 through the elastic conductor 40; the first circuit board 30 is connected to the second circuit board 60 through the connecting wire 50, so that the current passes The connecting wire 50 is transmitted to the second circuit board 60; the second circuit board 60 and the battery pack 70 are connected through a second contact piece (not shown), so that the current is transmitted to the The battery pack 70 can be charged. It should be noted that the first contact piece and the second contact piece are nickel plates in this embodiment. Of course, in other embodiments, the contact pieces may also be other conductive elements, such as: Copper sheet, iron sheet, etc., not limited to nickel sheet. At the same time, the second circuit board 60 and the battery pack 70 can also be connected by wires and other conductive elements, not just contact pieces.

The housing 10 includes an upper cover 12 and a lower cover 11 connected to the upper cover 12. Specifically, in this embodiment, the housing 10 further includes a bottom surface 110, the bottom surface 110 is specifically provided on the lower cover 11, and the upper cover 12 and the lower cover 11 are detachably connected by a buckle Of course, in other embodiments, the upper cover 12 can also be connected to the lower cover 11 by screws or other parts.

In order to facilitate understanding, in this embodiment, please refer to FIG. 6, taking the X direction in the figure as upward, and correspondingly, the direction opposite to the X direction is downward.

The first circuit board 30 is disposed in the housing 10, and the first circuit board 30 is connected to the lower cover 11. Specifically, the first circuit board 30 is further provided with a first through hole 31. Correspondingly, the lower cover 11 further includes a supporting column 14 which can cooperate with the first through hole 31 to Connect the first circuit board 30 and the lower cover 11. In particular, in this embodiment, the first circuit board 30 is further provided with a first threaded hole 33, and the nut 15 can pass through the first threaded hole 33 and the second threaded hole of the lower cover 11 ( (Not shown) is connected, and the supporting column 14 is clamped to the first through hole 31, so that the first circuit board 30 can be stably installed on the lower cover 11. It should be noted that in this embodiment, there are multiple first through holes 31, specifically four. In other embodiments, the number of first through holes 31 is not limited to 4. It can be more or less. Of course, in other embodiments, the first threaded hole 33 on the first circuit board 30 may also be a through hole, and the nut 15 may also be a second threaded hole passing through the through hole and the lower cover 11. Threaded holes (not shown) are connected.

The first circuit board 30 is further provided with a second through hole 32, the conductive post 20 partially passes through the second through hole 32, and the conductive post 20 passes through the elastic conductor 40 and the first circuit board 30 electrical connections. Please refer to FIG. 6, the conductive pillar 20 includes a base 21 and a connector 22 partially received in the base 21. Specifically, the base 21 is fixedly connected to the lower cover 11. In this embodiment, the base 21 includes a first end surface 213 and a second end surface 214 corresponding to the first end surface 213, so The second end surface 214 and the bottom surface 110 are integrally formed. Of course, in other embodiments, the base 21 may also be installed on the bottom surface 110 by screws or other parts. The base 21 further includes a receiving cavity 211, and the connecting member 22 is movably received in the receiving cavity 211. The connecting member 22 includes a body portion 220, and the body portion 220 is configured in a rod shape in this embodiment. The body portion 220 further includes a contact end 221 and a docking portion 223, and the contact end 221 is docked The parts 223 are respectively provided at two ends of the main body 220. The contact end 221 can be connected to the first contact piece of the charging device, and the mating portion 223 is connected to the elastic conductor 40. It should be noted that the position and number of the second through holes 32 correspond to the first contact pieces of the charging device, so that the conductive posts 20 can be in contact with the first contact pieces.

The connecting member 22 further includes a limiting portion 222 connected to the main body 220. The maximum distance between the contact end 221 and the bottom surface 110 is set to a first spacing, and the maximum movement distance of the limiting portion 222 is set to a second spacing, and the first spacing is greater than the second spacing to Therefore, a part of the connecting member 22 is always located outside the housing 10, so that dust cannot enter the conductive post 20 from the connection between the connecting member 22 and the housing 10, and the dustproof effect is good, which reduces Safety hazards.

6-8, in the first embodiment of the present invention, the base 21 further includes a first hollow tube 212 and a second hollow tube 215, the first hollow tube 212 and the The second hollow tube 215 defines the receiving cavity 211. It should be noted that in this embodiment, the base 21 is configured as a tube, and the height of the base 21 is represented by H11. The height of the second hollow tube 215 is represented by h11. The conductive column 20 further includes a first shaft sleeve 24 sleeved on the connecting member 21, the first shaft sleeve 24 is configured as a copper ring, and the first shaft sleeve 24 and the first shaft sleeve of the base 21 One end surface 213 is welded, and the distance between the upper and lower end surfaces of the first sleeve 24 is set to a fourth pitch, which is represented by D41 in this embodiment. It should be noted that the welding of the first sleeve 24 and the base 21 is only an embodiment that is easy to install and has a stable structure. In other embodiments, the first sleeve 24 may also be a snap connection.于The receiving cavity 211. Meanwhile, in other embodiments, the first sleeve 24 can also be configured in other shapes, and is not limited to a copper ring.

The limiting portion 222 includes a first limiting portion 2221 and a second limiting portion 2222. Specifically, the first limiting portion 2221 is provided below the second limiting portion 2222, and the first limiting portion 2221 can be connected to the second hollow tube 215, and the second limiting portion 2221 The portion 2222 can be connected to the first sleeve 24, and the distance between the first limiting portion 2221 and the second limiting portion 2222 is set to a fifth spacing, and the fifth spacing is represented by D51. Specifically, in this embodiment, when the battery pack is not in use, the first limiting portion 2221 is connected to the second hollow tube 215; when the battery pack is electrically connected to the charging device, The connecting member 22 moves upwards, so that the first limiting portion 2221 is separated from the second hollow tube 215, and the second limiting portion 2222 moves upwards, and is finally connected to the first sleeve 24 . It should be noted that, in some embodiments, when the battery pack is electrically connected to the charging device, the second limiting portion 2222 may only move upward for a small distance, and the second limiting portion 2222 and The first sleeve 24 is not connected, but the connecting member 22 still has a tendency to continue to move upwards. If the connecting member 22 continues to receive an upward external force, the connecting member 22 can move until the second limit position. The part 2222 is connected to the first sleeve 24.

Further, the first limiting portion 2221 further includes an upper surface 224 and a lower surface 225 corresponding to the upper surface 224, and the distance between the upper surface 224 and the lower surface 225 is set to a third interval , The third distance is represented by D31. In this embodiment, the second distance is represented by D21, and the second distance is the height of the base 21 minus the height of the second hollow tube 215, the third distance, the The fourth distance and the fifth distance are: D21=H11-h11-D31-D41-D51. The first distance is the maximum distance between the contact end 221 and the ground 110. In this embodiment, the first distance is specifically the lower surface 225 of the first limiting portion 2221 and the The distance between the contact ends 221 minus the height of the second hollow tube 215, the first distance is represented by D11, and the distance between the lower surface 225 of the first limiting portion 2221 and the contact end 221 The distance is represented by D61, then D11=D61-h11. Since D11>D21, the connecting member 22 is always partially located outside the housing 10. It should be noted that in this embodiment, the conductive column 20 is provided with the first sleeve 24, the second hollow tube 215, and the second limiting portion 2222, and the conductive column 20 satisfies The first pitch is greater than the second pitch. However, in other embodiments, if the first pitch is greater than the second pitch, the conductive pillar 20 may not include the first pitch. A shaft sleeve 24, the second hollow tube 215 and the second limiting portion 2222. Of course, it is conceivable that in other embodiments, the conductive pillar 20 may also include only one of the first sleeve 24, the second hollow tube 215, and the second limiting portion 2222 Or two of them.

Please refer specifically to FIGS. 9-10. In the second embodiment of the present invention, the base 21 only includes a first hollow tube, and the base 21 is no longer provided with a first sleeve 24. Specifically, in this embodiment, the limiting portion 222 only has a first limiting portion, and the limiting portion 222 includes an upper surface 224 and a lower surface 225 corresponding to the upper surface 224. The distance between the surface 224 and the lower surface 225 is set as a third distance, and the third distance is represented by D32; the first distance is the distance between the lower surface 225 and the contact end 221, so The first distance is represented by D12; the height of the base 21 is represented by H12, the second distance is the difference between the height of the base 21 and the third distance, and the second distance is represented by D22 , That is: D22=H12-D32. In this embodiment, since D12>D22, part of the connecting member 22 is always located outside the housing 10.

11-12, in the third embodiment of the present invention, the base 21 further includes a first hollow tube 212 and a second hollow tube 215, the first hollow tube 212 and the The second hollow tube 215 defines the receiving cavity 211. It should be noted that in this embodiment, the base 21 is configured as a tube, and the height of the base 21 is represented by H13. The height of the second hollow tube 215 is represented by h13; the limiting portion 222 only includes a first limiting portion, and the limiting portion includes an upper surface 224 and a lower surface 225 corresponding to the upper surface 224, so The distance between the upper surface 224 and the lower surface 225 is set as a third distance, and the third distance is represented by D33. In this embodiment, the first distance is represented by D13, and the first distance is the distance between the lower surface 225 of the limiting portion 222 and the contact end 221 minus the distance of the second hollow tube 215 Height, the distance between the lower surface 225 of the limiting portion 222 and the contact end 221 is represented by D63, then D13=D63-h13; the second distance is represented by D23, and the second distance is the The height of the base 21 minus the third distance and the height of the second hollow tube 215, namely: D23=H13-D33-h13. Since D13>D23, the connecting member 22 is always partially located outside the housing 10.

Please refer specifically to FIGS. 13-14. In the fourth embodiment of the present invention, the base 21 is configured as a tube, and the height of the base 21 is represented by H14; the conductive post 20 also includes The first shaft sleeve 24 of the connecting piece 21 is configured as a copper ring, and the first shaft sleeve 24 is welded to the first end surface 213 of the base 21, and the first shaft The distance between the upper and lower end surfaces of the sleeve 24 is set as a fourth distance, which is represented by D44 in this embodiment. It should be noted that the welding of the first sleeve 24 and the base 21 is only an embodiment that is easy to install and has a stable structure. In other embodiments, the first sleeve 24 may also be a snap connection.于The receiving cavity 211. Meanwhile, in other embodiments, the first sleeve 24 can also be configured in other shapes, and is not limited to a copper ring. The limiting portion 22 only includes a first limiting portion, and the limiting portion 22 further includes an upper surface 224 and a lower surface 225 corresponding to the upper surface, the upper surface 224 and the lower surface 225 The distance between is set as a third distance, and the third distance is represented by D34. In this embodiment, the first distance is represented by D14, and the first distance is specifically the distance between the lower surface 225 of the limiting portion 22 and the contact end 221; the second distance is D24 represents, and the second distance is the height of the base 21 minus the third distance and the fourth distance, namely: D24=H14-D34-D44. Since D14>D24, the connecting member 22 is always partially located outside the housing 10.

The conductive pillar 20 further includes an elastic member 25, and the elastic member 25 is sleeved on the connecting member 22. In each embodiment of the present invention, the elastic member 25 is configured as a spring, and the elastic member 25 is received in the receiving cavity 211. In a preferred embodiment, the elastic member 25 is provided between the limiting portion 222 and the first end surface 213 of the base 21. Specifically, in the first embodiment of the present invention, one end of the elastic member 25 is connected to the upper surface 224 of the limiting portion 222, and the other end is connected to the first sleeve 24; when the battery pack is connected to the When the charging device is electrically connected, the connecting member 22 moves upward, and the part of the elastic member 25 connected with the limiting portion 222 has a tendency to move upward, and the first sleeve 24 is fixedly connected to the base 21 In this way, the elastic member 25 is compressed; when the battery pack is disconnected from the charging device, the elastic member 25 returns to its original shape, thereby pushing the connecting member 22 to return to its original position. It should be noted that in other embodiments, the elastic member 25 may also have one end connected to the upper surface 224 and the other end connected to the first end surface 213 of the base 21.

Furthermore, the conductive column 20 further includes a second sleeve 23, and the second sleeve 23 is sleeved on the mating portion 223. Through the second sleeve 23, the strength of the butting portion 223 when the butting portion 223 is connected to the elastic conductor 40 is enhanced. It should be noted that, in the preferred embodiment of the present invention, the second sleeve 23 can be configured as a copper ring, so that the second sleeve 23 can transmit current.

5 and 15, the battery pack 1 further includes an elastic conductor 40, the conductive pillar 20 is electrically connected to the first circuit board 30 through the elastic conductor 40, the elastic conductor 40 includes a first end 41 and a second end 43. The first end 41 is welded to the conductive pillar 20, and the second end 43 is welded to the first circuit board 30. The current output by the charging device passes through the conductive pillar. 20 and the elastic conductor 40 are transferred to the first circuit board 30. In a preferred embodiment of the present invention, the elastic conductor 40 is configured as a conductive spring, the extension direction of the first end 41 of the elastic conductor 40 is parallel to the movement direction of the conductive column 20, and the connecting member 22 includes The docking portion 223, the first end 41 is clamped to the docking portion 223, and the first end 41 is welded to the docking portion 223, so that when the battery pack is electrically connected to the charging device , The connecting piece 22 moves upward, the first end 41 of the elastic conductor 40 and the connecting piece 22 move upward together, and the first end 41 is connected to the conductive column 20 stably and not easily falling off. It should be noted that in a preferred embodiment, the docking portion 223 further includes a receiving groove, and the first end 41 extends into the receiving groove and then welded to realize the first end 41 and the docking portion. 223 stable connection.

The second end 43 of the elastic conductor 40 is welded to the first circuit board 30. Specifically, the first circuit board 30 includes a receiving portion 35, the second end 43 includes a hook portion 431, the hook portion 431 is clamped in the receiving portion 35; the hook portion 431 and the receiving portion After 35 is clamped, the receiving portion 35 and the hook portion 431 are welded to connect the first circuit board 30 and the elastic conductor 40, so that the second end 43 and the first circuit board 30 Stable connection, not easy to fall off. It should be noted that, in a preferred embodiment, the accommodating portion 35 includes a stop portion 351 whose extending direction is parallel to the plane where the first circuit board 30 is located, and the hook portion 431 and The stopper portion 351 is connected to each other, so that through the stopper portion 351, the hook portion 431 is difficult to escape from the receiving portion 35, and the second end 43 is stably connected to the first circuit board 30 .

Further, the elastic conductor 40 further includes a guiding portion 42 that includes a first guiding portion 421, and the first guiding portion 421 and the first end 41 pass through a first connection point 411 Are connected, and the first guiding portion 421 extends away from the mating portion 41 with the first connection point 411 as a starting point. In a preferred embodiment, the extending direction of the first guiding portion 421 is substantially parallel to the plane where the first circuit board 30 is located, so that the first guiding portion 421 is easily shared with the connecting member 22 It moves upward, and the first guiding part 421 can be designed to be shorter, which saves cost. In a preferred embodiment, the elastic conductor 40 further includes a second guiding portion 422, the second guiding portion 422 is connected to the first guiding portion 421, and the second guiding portion 422 is connected to the The connection point of the first guiding portion 421 is a second connection point 412, and the second guiding portion 422 extends toward the first circuit board 30 with the second connection point 412 as a starting point. The extending direction of the second guiding portion 422 is substantially perpendicular to the plane where the first circuit board 30 is located, so that the second guiding portion 422 can easily move upward together with the connecting member 22.

Further, the elastic conductor 40 further includes a third guiding portion 423, which is connected to the second guiding portion 422 through a third connection point 413, and the third guiding portion 423 The third connection point 413 is used as a starting point and extends along the circumferential direction until it is connected to the second end 43. In a preferred embodiment, the third guide portion 423 is configured as a ring with an opening. When the battery pack is electrically connected to the charging device, the connecting member 22 moves upward, and the third guide The guiding portion 423 and the connecting member 22 move upward together; when the battery pack 1 is disconnected from the charging device, the third guiding portion 423 can provide a restoring force to make the connecting member 22 better To return to the original position. Of course, in other embodiments, the third guiding portion 423 may also be directly connected to the first guiding portion 421, and the third guiding portion 423 uses the second connection point 412 as a starting point. It extends in the circumferential direction until it is connected to the second end 43. That is, in other embodiments, the guiding portion 42 may not include a second guiding portion extending toward the first circuit board 30.

It should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for clarity, and those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of the feasible implementation of the present utility model. They are not used to limit the scope of protection of the present utility model. Any equivalent made without departing from the technical spirit of the present utility model The implementation or modification should be included in the protection scope of the present invention.

Finally, it should be noted that the above implementations are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing implementations, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A battery pack comprising a casing, a first circuit board arranged in the casing, and a conductive column partially arranged in the casing, and the conductive column is electrically connected to the first circuit board, characterized in that , The first circuit board further includes a second through hole, and the conductive pillar partially passes through the second through hole; the battery pack further includes an elastic conductor, and the conductive pillar passes through the elastic conductor and the second through hole. A circuit board is electrically connected; the elastic conductor includes a first end and a second end, the first end is welded to the conductive post, and the second end is welded to the first circuit board.
The battery pack according to claim 1, wherein the first circuit board further includes a receiving portion, the second end includes a hook portion, and the hook portion is clamped in the receiving portion.
The battery pack according to claim 2, wherein the accommodating portion includes a stopper, the extension direction of the stopper is parallel to the plane where the first circuit board is located, and the hook is connected to the stopper. The blocking portion is connected, and the receiving portion is welded to the hook portion to connect the first circuit board and the elastic conductor.
The battery pack according to claim 1, wherein the extension direction of the first end is parallel to the movement direction of the conductive column, the conductive column further comprises a butting portion, and the first end is clamped on the The butt joint, and the first end is welded to the butt joint.
The battery pack according to claim 1, wherein the elastic conductor further comprises a guiding part, the guiding part comprises a first guiding part, and the first guiding part passes through the first end The first connection point is connected, and the first guiding part extends in a direction away from the first end with the first connection point as a starting point.
The battery pack according to claim 5, wherein the extending direction of the first guiding portion is substantially parallel to the plane where the first circuit board is located.
The battery pack according to claim 5, wherein the guiding part further comprises a second guiding part, and the first guiding part and the second guiding part are connected by a second connection point, so The second guiding portion extends toward the first circuit board with the second connection point as a starting point, and the extending direction of the second guiding portion is substantially perpendicular to the plane where the first circuit board is located.
The battery pack according to claim 7, wherein the guiding part further comprises a third guiding part, and the third guiding part is connected to the second guiding part through a third connection point, so The third guiding portion extends in a circumferential direction with the third connection point as a starting point until it is connected to the second end.
The battery pack according to claim 1, wherein the conductive column further comprises a base and a connector at least partially received in the base, the base includes a receiving cavity, and the connector is movably In the receiving cavity, the first end is connected to the connecting piece. When the connecting piece moves, the connecting piece drives at least part of the elastic conductor to move together.
The battery pack according to claim 9, wherein the elastic conductor includes a guiding part connected to the first end, and when the connecting member moves upward, the guiding part And the first end move upward together.