CN210224218U

CN210224218U - Battery pack

Info

Publication number: CN210224218U
Application number: CN201921064146.7U
Authority: CN
Inventors: Zhao Kong; 孔钊; Yanling Zhu; 朱艳玲
Original assignee: Suzhou Cleva Electric Appliance Co Ltd
Current assignee: Suzhou Cleva Electric Appliance Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-03-31
Anticipated expiration: 2029-07-09
Also published as: WO2021003966A1

Abstract

The utility model relates to a battery pack, which comprises a shell, a first circuit board arranged in the shell, and a conductive column partially arranged in the shell, wherein the conductive column is electrically connected with the first circuit board, the first circuit board also comprises a second through hole, and the conductive column partially passes through the second through hole; the battery pack further comprises an elastic conductor, the conductive column is electrically connected with the first circuit board through the elastic conductor, the elastic conductor comprises a first end and a second end, the first end is welded with the conductive column, and the second end is welded with the first circuit board. The utility model discloses a conductive pillar and first circuit board are led in the connection of elastic conductor, can effectively reduce the temperature rise, and is more safe.

Description

Battery pack

Technical Field

The utility model relates to a battery pack.

Background

The shell of the existing battery pack is internally provided with a conductive column, the conductive column partially extends out of the shell and is in contact with a contact piece of a charging device so as to realize the electric connection of the charging device and the battery pack, and the battery pack is only in a charging state when the conductive column and the contact piece are kept in continuous contact. Meanwhile, a circuit board is arranged in the shell and connected with the conductive posts, so that current can be transmitted to the circuit board through the conductive posts and transmitted to the battery pack through the circuit board, and charging is achieved.

The existing connection mode of the conductive column and the circuit board is mainly as follows: the conductive column is welded with the circuit board to realize the electrical connection of the conductive column and the circuit board.

However, the above connection method has the following problems: after the conductive column is used for a period of time, when current passes through the conductive column and the circuit board, resistance change is large, and temperature rise is concentrated and raised due to resistance change, so that certain potential safety hazard is brought.

Disclosure of Invention

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

The utility model provides a technical scheme that above-mentioned technical problem took is: a battery pack comprises a shell, a first circuit board arranged in the shell, and a conductive column partially arranged in the shell, wherein the conductive column is electrically connected with the first circuit board; the battery pack further comprises an elastic conductor, and the conductive column is electrically connected with the first circuit board through the elastic conductor; the elastic conductor comprises a first end and a second end, the first end is welded with the conductive column, and the second end is welded with the first circuit board.

Further, the first circuit board further comprises an accommodating part, the second end comprises a hook part, and the hook part is clamped in the accommodating part.

Furthermore, the accommodating part comprises a stopping part, the extending direction of the stopping part is parallel to the plane where the first circuit board is located, the hook part is connected with the stopping part, and the accommodating part and the hook part are welded to connect the first circuit board and the elastic conductor.

Further, the extending direction of the first end is parallel to the moving direction of the conductive column, the conductive column further includes a butt joint portion, the first end is clamped in the butt joint portion, and the first end is welded with the butt joint portion.

Furthermore, the elastic conductor further comprises a guiding part, the guiding part comprises a first guiding part, the first guiding part is connected with the first end through a first connecting point, and the first guiding part extends towards the direction far away from the first end by taking the first connecting point as a starting point.

Further, the extending direction of the first guide part is basically parallel to the plane of the first circuit board.

Furthermore, the guiding part also comprises a second guiding part, the first guiding part is connected with the second guiding part through a second connecting point, the second guiding part extends towards the first circuit board by taking the second connecting point as a starting point, and the extending direction of the second guiding part is basically vertical to the plane of the first circuit board.

Further, the guide portion further includes a third guide portion connected to the second guide portion by a third connection point, and the third guide portion extends in the circumferential direction until being connected to the second end with the third connection point as a start point.

Further, the conductive post further comprises a base and a connecting piece at least partially accommodated in the base, the base comprises an accommodating cavity, the connecting piece is movably accommodated in the accommodating cavity, the first end is connected with the connecting piece, and when the connecting piece moves, the connecting piece drives at least part of the elastic conductors to move together.

Further, the elastic conductor comprises a guide part, the guide part is connected with the first end, and when the connecting piece moves upwards, the guide part and the first end move upwards together.

The invention has the beneficial effects that:

according to the invention, the conductive column is connected with the first circuit board through the elastic conductor, the first end of the elastic conductor is welded with the conductive column, and the second end of the elastic conductor is welded with the first circuit board, so that on one hand, when current is transmitted to the first circuit board from the conductive column, the resistance change is small, and the temperature rise cannot be gathered and raised; 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.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack according to a preferred embodiment of the present invention;

fig. 2 is a cross-sectional view of a battery pack according to a preferred embodiment of the present invention;

fig. 3 is a schematic view of a lower cover of a battery pack according to a preferred embodiment of the present invention;

fig. 4 is a schematic diagram of a first circuit board according to a preferred embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of the area A in FIG. 4;

fig. 6 is a schematic diagram of a state of the conductive pillar according to the first embodiment of the present invention;

fig. 7 is a schematic view of the conductive post of the first embodiment of the present invention in another state;

fig. 8 is a schematic view of a connector of a first embodiment of the present invention;

fig. 9 is a schematic view of a second embodiment of the present invention with a conductive post in a state;

fig. 10 is a schematic view of the conductive post of the second embodiment of the present invention in another state;

fig. 11 is a schematic view of a third embodiment of the present invention with a conductive post in a state;

fig. 12 is a schematic view of a third embodiment of the present invention with the conductive post in another state;

fig. 13 is a schematic view of a conductive column of a fourth embodiment of the present invention in a state;

fig. 14 is a schematic view of a conductive post of a fourth embodiment of the present invention in another state;

fig. 15 is a schematic diagram of an elastic conductor according to a preferred embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to exemplary embodiments shown in the drawings. Terms used in the exemplary embodiments are selected as general terms used as widely as possible, but in a specific case, terms arbitrarily selected by the applicant are also used, and in this case, meanings are mentioned in the corresponding detailed description section, so that the inventive concept should not be understood by literal meanings of the terms, but by given meanings of the terms.

While the concepts of the present invention are susceptible to various modifications and alternative embodiments, specific exemplary embodiments have been shown in the drawings and are described in detail in the written description. However, it is not intended to limit the inventive concept to the particular mode of practice, and it should be understood that all changes, equivalents, and substitutions that do not depart from the spirit and technical scope are intended to be embraced therein. In the description, certain details of the prior art are omitted when it is deemed that the nature of the inventive concept may be unnecessarily obscured.

In this specification, it will be understood that terms such as "comprising," "having," "including," or the like, are intended to specify the presence of stated features, integers, steps, actions, components, parts, or combinations thereof, and are not intended to preclude the presence or addition of one or more other features, integers, steps, actions, components, parts, or combinations thereof.

Terms such as "unit," "device," "component," "module," and the like described in the specification refer to an element for performing at least one function or operation, and may be implemented in hardware or software or a combination of hardware and software. Furthermore, a plurality of "modules" or a plurality of "units" may be integrally formed as at least one processing module except for the "modules" or "units" which must be implemented as specific hardware.

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 or electrically connected to the other element, and intervening elements may also be present. In addition, when a portion "includes" an element, another element may be further included without excluding the presence of the other element unless otherwise specified.

Referring to fig. 1 to 15, the present invention provides a battery pack 1, wherein the battery pack 1 includes a housing 10, a conductive pillar 20, a first circuit board 30, an elastic conductor 40, a connecting wire 50, a second circuit board 60, and a battery pack 70.

When the battery pack 1 is low in power, a user can connect the battery pack 1 with a charging device (not shown), and the battery pack 1 can store electric energy to realize charging. Specifically, in the present embodiment, the battery pack 1 includes a housing 10, the conductive posts 20 are at least partially disposed in the housing 10, the first circuit board 30 is disposed in the housing 10, and the first circuit board 30 is electrically connected to the conductive posts 20. When the battery pack 1 is electrically connected to the charging device, the conductive post 20 is connected to a first contact (not shown) of the charging device, and current is transmitted to the conductive post 20 through the first contact; an elastic conductor 40 is further disposed between the first circuit board 30 and the conductive post 20, one end of the elastic conductor 40 is connected to the first circuit board 30, the other end of the elastic conductor 40 is connected to the conductive post 20, and 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 connection line 50, whereby the current is transmitted to the second circuit board 60 through the connection line 50; the second circuit board 60 is connected to the battery pack 70 through a second contact (not shown), whereby the current is transferred to the battery pack 70 to effect charging. It should be noted that the first contact and the second contact are nickel plates in this embodiment, but of course, the contacts may be other conductive elements in other embodiments, such as: copper sheets, iron sheets, etc., and not limited to nickel sheets. Meanwhile, the second circuit board 60 and the battery pack 70 may be connected by other conductive elements such as wires, not limited to contacts.

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 disposed on the lower cover 11, the upper cover 12 is detachably connected to the lower cover 11 through a snap, and in other embodiments, the upper cover 12 may be connected to the lower cover 11 through a screw or the like.

For easy understanding, in the present embodiment, please refer to fig. 6, which illustrates the X direction 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, and correspondingly, the lower cover 11 further includes a supporting pillar 14, and the supporting pillar 14 can be matched 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 a nut 15 can be connected to a second threaded hole (not shown) of the lower cover 11 through the first threaded hole 33, and the supporting pillar 14 is engaged with the first through hole 31, so that the first circuit board 30 can be stably mounted on the lower cover 11. It should be noted that in this embodiment, the number of the first through holes 31 is multiple, specifically 4, and in other embodiments, the number of the first through holes 31 is not limited to 4, and may 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 connected to a second threaded hole (not shown) of the lower cover 11 through the through hole.

The first circuit board 30 is further provided with a second through hole 32, the conductive pillar 20 partially penetrates through the second through hole 32, and the conductive pillar 20 is electrically connected with the first circuit board 30 through the elastic conductor 40. Referring to fig. 6, the conductive pillar 20 includes a base 21 and a connecting member 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, the second end surface 214 is integrally formed with the bottom surface 110, and of course, in other embodiments, the base 21 may be mounted on the bottom surface 110 by a component such as a screw. The base 21 further includes a receiving cavity 211, and the connecting member 22 is movably received in the receiving cavity 211. The connecting element 22 includes a main body 220, the main body 220 is configured as a rod in the present embodiment, the main body 220 further includes a contact end 221 and an abutting portion 223, and the contact end 221 and the abutting portion 223 are respectively disposed at two ends of the main body 220. The contact end 221 may be connected to a first contact of the charging device, and the abutting portion 223 is connected to the elastic conductor 40. It should be noted that the second through holes 32 are located and numbered corresponding to the first contact pieces of the charging device, so that the conductive posts 20 can contact the first contact pieces.

The connecting member 22 further includes a position-limiting portion 222, and the position-limiting portion 222 is connected to the main body 220. The maximum distance between the contact end 221 and the bottom surface 110 is set as a first distance, the maximum movement distance of the limiting part 222 is set as a second distance, and the first distance is larger than the second distance, so that part of the connecting piece 22 is always positioned outside the shell 10, dust cannot enter the conductive post 20 from the connecting part of the connecting piece 22 and the shell 10, the dustproof effect is good, and potential safety hazards are reduced.

Referring to fig. 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 second hollow tube 215 define the receiving cavity 211, it should be noted that, in the present embodiment, the base 21 is configured in a tubular shape, the height of the base 21 is represented by H11, and the height of the second hollow tube 215 is represented by H11. The conductive post 20 further includes a first shaft sleeve 24 sleeved on the connecting element 21, the first shaft sleeve 24 is configured as a copper ring, the first shaft sleeve 24 is welded to the first end surface 213 of the base 21, and a distance between the upper end surface and the lower end surface of the first shaft sleeve 24 is a fourth distance, which is denoted by D41 in the present embodiment. It should be noted that the welding of the first shaft sleeve 24 and the base 21 is only an embodiment for easy installation and stable structure, and in other embodiments, the first shaft sleeve 24 may be clamped in the receiving cavity 211. Meanwhile, in other embodiments, the first sleeve 24 may be configured in other shapes, and is not limited to being a copper ring.

The position-limiting portion 222 includes a first position-limiting portion 2221 and a second position-limiting portion 2222. Specifically, the first position-limiting portion 2221 is disposed below the second position-limiting portion 2222, the first position-limiting portion 2221 may be connected to the second hollow tube 215, the second position-limiting portion 2222 may be connected to the first sleeve 24, and a distance between the first position-limiting portion 2221 and the second position-limiting portion 2222 is set as a fifth distance, which is denoted by D51. In the embodiment, when the battery pack is not used, the first position-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 upward, so that the first position-limiting portion 2221 is separated from the second hollow tube 215, and the second position-limiting portion 2222 moves upward and is finally coupled 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 position-limiting portion 2222 may move upwards only a small distance, and the second position-limiting portion 2222 is not connected to the first sleeve 24, but the connecting member 22 still has a tendency to move upwards, and if the connecting member 22 continues to be subjected to an upward external force, the connecting member 22 may move until the second position-limiting portion 2222 is connected to the first sleeve 24.

Further, the first position-limiting portion 2221 further includes an upper surface 224 and a lower surface 225 corresponding to the upper surface 224, and a distance between the upper surface 224 and the lower surface 225 is set as a third distance, which is denoted by D31. In the present embodiment, the second pitch is represented by D21, and the second pitch is the height of the base 21 minus the height of the second hollow tube 215, the third pitch, the fourth pitch, and the fifth pitch, that is: D21-H11-H11-D31-D41-D51. The first distance is a maximum distance between the contact end 221 and the ground 110, and in this embodiment, the first distance is a distance between the lower surface 225 of the first position-limiting portion 2221 and the contact end 221 minus a height of the second hollow tube 215, the first distance is represented by D11, a distance between the lower surface 225 of the first position-limiting portion 2221 and the contact end 221 is represented by D61, and then D11 is D61-h 11. Since D11 > D21, the connecting member 22 is always partially located outside the housing 10. It should be noted that, in the present embodiment, the conductive post 20 is provided with the first shaft sleeve 24, the second hollow tube 215 and the second position-limiting portion 2222, and the conductive post 20 satisfies that the first distance is greater than the second distance, but in other embodiments, if the first distance is greater than the second distance, the conductive post 20 may not include the first shaft sleeve 24, the second hollow tube 215 and the second position-limiting portion 2222. Of course, it is conceivable that, in other embodiments, the conductive post 20 may only include one or two of the first sleeve 24, the second hollow tube 215, and the second position-limiting portion 2222.

Referring to fig. 9-10, in a second embodiment of the present invention, the base 21 only includes the first hollow tube, and the base 21 is not provided with the first sleeve 24. Specifically, in the present embodiment, the limiting portion 222 has only 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, a distance between the upper surface 224 and the lower surface 225 is a third distance, and the third distance is represented by D32; said first distance is the distance between said lower surface 225 and said contact end 221, said first distance being denoted by D12; the height of the base 21 is represented by H12, the second pitch is the difference between the height of the base 21 and the third pitch, the second pitch is represented by D22, that is: D22-H12-D32. In the present embodiment, since D12 > D22, the connecting member 22 is always partially located outside the housing 10.

Referring to fig. 11-12 in particular, in a third embodiment of the present invention, the base 21 further comprises a first hollow tube 212 and a second hollow tube 215, the first hollow tube 212 and the second hollow tube 215 define the receiving cavity 211, it should be noted that, in the present embodiment, the base 21 is configured in a tubular shape, and the height of the base 21 is represented by H13, and the height of the second hollow tube 215 is represented by H13; the limiting portion 222 includes only a first limiting portion, and includes an upper surface 224 and a lower surface 225 corresponding to the upper surface 224, and a distance between the upper surface 224 and the lower surface 225 is a third distance, which is denoted by D33. In this embodiment, the first distance is represented by D13, the first distance is obtained by subtracting the height of the second hollow tube 215 from the distance between the lower surface 225 of the position-limiting portion 222 and the contact end 221, and the distance between the lower surface 225 of the position-limiting portion 222 and the contact end 221 is represented by D63, so that D13 is D63-h 13; the second spacing is represented by D23, which is the height of the base 21 minus the third spacing and the height of the second hollow tube 215, i.e.: D23-H13-D33-H13. Since D13 > D23, the connecting member 22 is always partially located outside the housing 10.

Referring specifically to fig. 13-14, in a 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 further includes a first sleeve 24 sleeved on the connecting element 21, the first sleeve 24 is configured as a copper ring, the first sleeve 24 is welded to the first end surface 213 of the base 21, and a distance between the upper end surface and the lower end surface of the first sleeve 24 is a fourth distance, which is denoted by D44 in this embodiment. It should be noted that the welding of the first shaft sleeve 24 and the base 21 is only an embodiment for easy installation and stable structure, and in other embodiments, the first shaft sleeve 24 may be clamped in the receiving cavity 211. Meanwhile, in other embodiments, the first sleeve 24 may be configured in other shapes, and is not limited to being a copper ring. The stopper portion 22 includes only a first stopper portion, and the stopper portion 22 further includes an upper surface 224 and a lower surface 225 corresponding to the upper surface, and a distance between the upper surface 224 and the lower surface 225 is a third distance, which is denoted by D34. In this embodiment, the first distance is denoted by D14, and the first distance is specifically a distance between the lower surface 225 of the limiting portion 22 and the contact end 221; the second pitch is denoted by D24, and the second pitch is the height of the base 21 minus the third pitch and the fourth pitch, i.e.: D24-H14-D34-D44. Since D14 > D24, the connecting member 22 is always partially located outside the housing 10.

The conductive post 20 further includes an elastic member 25, and the elastic member 25 is sleeved on the connecting member 22. In various embodiments of the present invention, the elastic member 25 is configured as a spring, and the elastic member 25 is accommodated in the accommodating cavity 211. In a preferred embodiment, the elastic element 25 is disposed between the limiting portion 222 and the first end surface 213 of the base 21. In the first embodiment of the present invention, one end of the elastic element 25 is connected to the upper surface 224 of the position-limiting portion 222, and the other end is connected to the first sleeve 24; when the battery pack is electrically connected with the charging device, the connecting piece 22 moves upwards, part of the elastic piece 25 connected with the limiting part 222 has the tendency of moving upwards, and meanwhile, the first shaft sleeve 24 is fixedly connected with the base 21, so that the elastic piece 25 is compressed; when the battery pack is disconnected from the charging device, the elastic member 25 is restored, thereby pushing the connecting member 22 to be restored to the original position. It should be noted that in other embodiments, the elastic member 25 may have one end connected to the upper surface 224 and the other end connected to the first end surface 213 of the base 21.

Further, the conductive pillar 20 further includes a second sleeve 23, and the second sleeve 23 is sleeved on the abutting portion 223. The strength of the abutting portion 223 when the abutting portion 223 is connected to the elastic conductor 40 is enhanced by the second bushing 23. It should be noted that in the preferred embodiment of the present invention, the second sleeve 23 may be configured as a copper ring, so that the second sleeve 23 can function to transmit current.

Referring to fig. 5 and fig. 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 soldered to the conductive pillar 20, the second end 43 is soldered to the first circuit board 30, and the current output by the charging device is transmitted to the first circuit board 30 through the conductive pillar 20 and the elastic conductor 40. In the preferred embodiment of the present invention, the elastic conductor 40 is configured as a conductive spring, the extending direction of the first end 41 of the elastic conductor 40 is parallel to the moving direction of the conductive post 20, the connecting member 22 includes a butt-joint portion 223, the first end 41 is clamped at the butt-joint portion 223, and the first end 41 is welded to the butt-joint portion 223, so that, when the battery pack is electrically connected to the charging device, the connecting member 22 moves upward, the first end 41 of the elastic conductor 40 moves upward together with the connecting member 22, the first end 41 is connected to the conductive post 20 stably and is not easy to fall off. It should be noted that, in a preferred embodiment, the abutting portion 223 further includes a receiving groove, and the first end 41 is welded after extending into the receiving groove to achieve stable connection between the first end 41 and the abutting portion 223.

The second end 43 of the elastic conductor 40 is soldered to the first circuit board 30. Specifically, the first circuit board 30 includes a receiving portion 35, the second end 43 includes a hook 431, and the hook 431 is clamped in the receiving portion 35; after the hook 431 and the accommodating portion 35 are clamped, the accommodating portion 35 and the hook 431 are welded to connect the first circuit board 30 and the elastic conductor 40, so that the second end 43 is stably connected with the first circuit board 30 and is not easy to fall off. It should be noted that, in a preferred embodiment, the receiving portion 35 includes a stopping portion 351, an extending direction of the stopping portion 351 is parallel to a plane of the first circuit board 30, the hook portion 431 is connected to the stopping portion 351, so that the hook portion 431 is difficult to be removed from the receiving portion 35 by the stopping portion 351, 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, the guiding portion 42 includes a first guiding portion 421, the first guiding portion 421 is connected to the first end 41 through a first connection point 411, and the first guiding portion 421 extends from the first connection point 411 to a direction away from the mating portion 41. In a preferred embodiment, the extending direction of the first guiding portion 421 is substantially parallel to the plane of the first circuit board 30, so that the first guiding portion 421 is easy to move upward together with the connecting member 22, and the first guiding portion 421 can be designed to be shorter, thereby saving 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, a connection point of the second guiding portion 422 and the first guiding portion 421 is a second connection point 412, and the second guiding portion 422 extends toward the first circuit board 30 from the second connection point 412 as a starting point. The second guide portion 422 extends substantially perpendicular to the plane of the first circuit board 30, so that the second guide portion 422 is easily moved upward together with the connecting member 22.

Further, the elastic conductor 40 further includes a third guiding portion 423, the third guiding portion 423 is connected to the second guiding portion 422 through a third connection point 413, and the third guiding portion 423 extends in the circumferential direction from the third connection point 413 to the second end 43. In a preferred embodiment, the third guide portion 423 is configured as a circular ring having an opening, the connecting member 22 moves upward when the battery pack is electrically connected to the charging device, and the third guide portion 423 moves upward together with the connecting member 22; when the battery pack 1 is electrically disconnected from the charging device, the third guide portion 423 may provide a restoring force to better restore the connection member 22 to the home 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 extends in the circumferential direction with the second connecting point 412 as the starting point until being connected to the second end 43, that is: in other embodiments, the guide portion 42 may not include the second guide portion extending toward the first circuit board 30.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims

1. A battery pack comprises a shell, a first circuit board arranged in the shell, and a conductive column partially arranged in the shell, wherein the conductive column is electrically connected with the first circuit board; the battery pack further comprises an elastic conductor, and the conductive column is electrically connected with the first circuit board through the elastic conductor; the elastic conductor comprises a first end and a second end, the first end is welded with the conductive column, and the second end is welded with the first circuit board.

2. The battery pack of claim 1, wherein the first circuit board further comprises a receiving portion, and the second end comprises a hook portion, and the hook portion is retained in the receiving portion.

3. The battery pack of claim 2, wherein the receiving portion comprises a stopper portion, the extending direction of the stopper portion is parallel to the plane of the first circuit board, the hook portion is connected to the stopper portion, and the receiving portion is welded to the hook portion to connect the first circuit board and the elastic conductor.

4. The battery pack of claim 1, wherein the first end extends in a direction parallel to the direction of movement of the conductive post, the conductive post further comprises a mating portion, the first end is clamped to the mating portion, and the first end is welded to the mating portion.

5. The battery pack of claim 1, wherein the resilient conductor further comprises a guide portion, the guide portion comprising a first guide portion, the first guide portion being connected to the first end via a first connection point, and the first guide portion extending away from the first end starting at the first connection point.

6. The battery pack of claim 5, wherein the first guide extends in a direction substantially parallel to a plane of the first circuit board.

7. The battery pack according to claim 5, wherein the guide portion further includes a second guide portion, the first guide portion and the second guide portion are connected by a second connection point, the second guide portion extends toward the first circuit board from the second connection point as a starting point, and the extending direction of the second guide portion is substantially perpendicular to the plane of the first circuit board.

8. The battery pack according to claim 7, wherein the guide portion further includes a third guide portion connected to the second guide portion by a third connection point, the third guide portion extending in a circumferential direction from the third connection point to the second end.

9. The battery pack of claim 1, wherein the conductive post further comprises a base and a connecting member at least partially received in the base, the base comprises a receiving cavity, the connecting member is movably received in the receiving cavity, the first end is connected to the connecting member, and when the connecting member moves, the connecting member drives at least a portion of the elastic conductors to move together.

10. The battery pack of claim 9, wherein the resilient conductor includes a guide portion coupled to the first end, the guide portion and the first end moving together upward when the coupling member moves upward.