CN219017846U

CN219017846U - Electrical interface, battery pack, and external device

Info

Publication number: CN219017846U
Application number: CN202223271178.9U
Authority: CN
Inventors: 柯亨钊; 李帅
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-05-12
Anticipated expiration: 2032-12-06

Abstract

The application discloses an electrical interface, a battery pack, and an external device. Wherein the electrical interface is provided on one of the battery pack and the external device, adapted to be electrically connected to a corresponding interface on the other of the battery pack and the external device, and the battery pack is mountable to the external device. The electric interface is a male end, and the corresponding interface on the external equipment is a female end; or the electric interface is a female end, and the corresponding interface on the external equipment is a male end; the male end comprises at least one first connecting terminal and at least one second connecting terminal, the first connecting terminal is a contact pin, and the second connecting terminal is an inserting piece; the female end is provided with a first enclasping piece matched with each first connecting terminal and a second enclasping piece matched with each second connecting terminal. Different connecting terminals in the application adopt different electric connection modes, so that reasonable arrangement of the power interface and the communication interface is guaranteed, and the problem that the battery pack is difficult to separate from external equipment can be solved.

Description

Electrical interface, battery pack, and external device

Technical Field

The present application relates to the field of batteries, and more particularly to an electrical interface, a battery pack, and an external device.

Background

Based on portable use requirements, more and more power tools employ battery packs as a power source. A battery compartment is typically provided on the power tool, and a battery pack is removably mounted within the battery compartment. In order to facilitate the taking out of the battery pack, an ejecting mechanism is arranged in the battery compartment for ejecting the battery pack.

However, with the increase of the volume and the weight of the battery pack, the conventional ejecting mechanism is difficult to eject the battery pack from the battery compartment smoothly, and the problem that the battery pack is blocked in the battery compartment and cannot be ejected frequently occurs.

Disclosure of Invention

An object of the present application is to provide an electrical interface to reduce the holding force between the battery pack and the external device, facilitating the separation of the battery pack from the external device.

Another object of the present application is to provide a battery pack, which solves the problem that the battery pack is difficult to be smoothly separated from an external device.

Another object of the present application is to provide an external device, which solves the problem that the battery pack is difficult to be smoothly separated from the external device.

To achieve the above object, the present application provides an electrical interface provided on one of a battery pack and an external device, adapted to be electrically connected to a corresponding interface on the other of the battery pack and the external device, the battery pack being mountable to the external device, the electrical interface being a male terminal, the corresponding interface on the external device being a female terminal; or the electrical interface is a female end, and the corresponding interface on the external equipment is a male end; the male end comprises at least one first connecting terminal and at least one second connecting terminal, the first connecting terminal is a contact pin, and the second connecting terminal is an inserting piece; the female end is provided with a first enclasping piece matched with each first connecting terminal and a second enclasping piece matched with each second connecting terminal.

Further, the male end includes at least two first connection terminals for electrically connecting the positive electrode and the negative electrode, respectively.

Further, the male end comprises at least two second connection terminals for communication connection.

Further, the connection terminals of the male end are arranged in a row.

Further preferably, the first connection terminal is in surface contact with the first clasping member when assembled, and the second connection terminal is in line contact with the second clasping member when assembled.

Further, the second enclasping piece comprises two elastic metal sheets which are oppositely arranged, each elastic metal sheet comprises a guide section, a contact section and a connecting section which are sequentially connected, the elastic metal sheets are fixed on the shell through the connecting sections, the distance between the contact sections of the two elastic metal sheets is smaller than the thickness of the second connecting terminal, the distance between the guide sections and the connecting sections of the two elastic metal sheets is larger than the thickness of the second connecting terminal, and the second connecting terminal is suitable for being inserted between the two guide sections and is contacted with the two contact sections.

The application also provides a battery pack comprising the electric interface.

Further, the battery pack includes a housing and a battery cell disposed within the housing, the battery pack adapted to fit into a battery compartment of an external device in a first direction, the housing having a bottom surface and a top surface substantially perpendicular to the first direction, the electrical interface disposed on the bottom surface, the electrical interface electrically connected to the battery cell.

Further, the housing includes a circumferential side surface between the top surface and the bottom surface, and a junction of the circumferential side surface and the top surface and/or the bottom surface is curved so that a portion of the surface of the circumferential side surface is not in contact with an inner wall of the battery compartment when the battery pack is assembled into the battery compartment.

The application also provides external equipment, which comprises the electric interface, wherein the external equipment is electric equipment or charging equipment.

Compared with the prior art, the beneficial effect of this application lies in: different connecting terminals in the application adopt different electric connection modes, so that reasonable arrangement of the power interface and the communication interface is guaranteed, and the problem that the battery pack is difficult to separate from external equipment can be solved.

Drawings

FIG. 1 is a schematic perspective view of one embodiment of a battery pack of the present application;

FIG. 2 is a schematic perspective view of one embodiment of a battery pack of the present application;

FIG. 3 is a front view of one embodiment of a battery pack of the present application;

FIG. 4 is a schematic view of a battery compartment of the battery pack of the present application assembled into an external device;

FIG. 5 is a schematic diagram of one embodiment of an electrical interface of the present application;

FIG. 6 is a schematic diagram of another embodiment of an electrical interface of the present application;

FIG. 7 is a schematic diagram of an electrical interface on a battery pack of the present application assembled with a corresponding interface of an external device;

in the figure: 100. a battery pack; 1. a housing; 11. a circumferential side; 111. a first side; 112. a first transition surface; 113. a second transition surface; 12. a top surface; 13. a bottom surface; 2. an electrical interface; 21. a positive electrode connecting member; 22. a negative electrode connecting member; 23. a communication connection; 201. a first connection terminal; 202. a second connection terminal; 203. a first clasping member; 204. a second clasping member; 241. a guide section; 242. a contact section; 243. a connection section; 300. and a battery compartment.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

As shown in fig. 1-4, in one embodiment of the present application, a battery pack 100 is provided, and the battery pack 100 may be mounted in a battery compartment 300 of an external device such that the battery pack 100 is electrically connected with the external device. It should be noted that the external device may be an electric device, such as an electric tool, so that the battery pack 100 supplies power to the electric device, or the external device may be a charging device, such as an energy storage power source, so that the battery pack 100 obtains electric energy from the charging device.

The battery pack 100 includes a housing 1 and an electrical interface 2 provided on the housing 1, the electrical interface 2 being for electrical connection with a corresponding interface on an external device. The application reduces the holding force between the battery pack 100 and the battery compartment 300 by reducing the contact area between the shell 1 and the battery compartment 300 of the external equipment and the contact area between the electrical interface 2 and the corresponding interface of the external equipment, thereby solving the problem that the battery pack cannot be ejected from the battery compartment smoothly. It should be noted that the battery pack 100 further includes a battery cell (not shown) disposed in the housing 1, and the electrical interface 2 is electrically connected to the battery cell.

In some embodiments, the battery pack 100 is adapted to fit into the battery compartment 300 of an external device in a first direction. The housing 1 includes a circumferential side 11 and top and

bottom surfaces

12 and 13 at both ends of the circumferential side 11, the top and

bottom surfaces

12 and 13 being substantially perpendicular to the first direction, and the junction of the circumferential side 11 and the top and/or

bottom surfaces

12 and 13 being curved so that a portion of the surface of the circumferential side 11 is not in contact with the inner wall of the battery compartment 300 when the battery pack 100 is assembled into the battery compartment 300. By reducing contact between the battery pack 100 and the inner wall of the battery compartment 300, friction is reduced, thereby facilitating ejection of the battery pack 100.

The circumferential side 11 includes a first side 111 extending in a first direction, a first transition surface 112 connecting an upper end of the first side 111 with the top surface 12, and a second transition surface 113 connecting a lower end of the first side 111 with the bottom surface 13, both the first transition surface 112 and the second transition surface 113 being curved in an arc shape, and neither the first transition surface 112 nor the second transition surface 113 being in contact with an inner wall of the battery compartment 300 when the battery pack 100 is assembled into the battery compartment 300.

In some embodiments, the first side 111 is planar and the first side 111 conforms to the interior wall of the battery compartment 300 when the battery pack 100 is assembled into the battery compartment 300.

In other embodiments, the first side 111 is a rugged surface, and when the battery pack 100 is assembled into the battery compartment 300, the first side 111 does not completely fit the inner wall of the battery compartment 300, thereby further reducing the contact area between the battery pack 100 and the battery compartment 300.

The electrical interface 2 is arranged on the bottom surface 13 of the housing 1. Generally, the electrical interface includes a plurality of connection terminals, which are respectively used for performing electrical connection and communication connection between the positive electrode and the negative electrode, the connection terminals of the existing battery pack generally adopt a pin structure (i.e., a pin or a holding member corresponding to the pin), the holding force of the pin structure is relatively large, so that the resistance when the battery pack is ejected can be increased, but if the connection terminals are completely replaced by an inserting piece structure with relatively small holding force (i.e., an inserting piece or a holding member corresponding to the inserting piece), the electrical requirement and the safety requirement cannot be met. To solve this problem, the inventors propose that a part of the connection terminals of the electrical interface 2 adopts a tab structure and another part adopts a pin structure, and the resistance when the battery pack 100 pops out is reduced to some extent while ensuring the power consumption requirement and the safety requirement.

The electrical interface 2 may be a male or female terminal. In a preferred embodiment, the electrical interface 2 on the battery pack 100 is a female terminal.

As shown in fig. 5, the male end includes at least one first connection terminal 201 and at least one second connection terminal 202, the first connection terminal 201 is a pin, and the second connection terminal 202 is an insert. As shown in fig. 6, the female end has a first clasping member 203 that mates with each first connection terminal 201, and a second clasping member 204 that mates with each second connection terminal 202.

Preferably, the first connection terminal 201 is in surface contact when assembled with the first hug 203, and the second connection terminal 202 is in line contact when assembled with the second hug 204.

Preferably, the male end comprises at least two first connection terminals 201 for the electrical connection of the positive and negative electrode, respectively. Because the electric connection of the positive electrode and the negative electrode has higher requirements on electricity utilization requirement and safety requirement, the connecting terminal for the electric connection of the positive electrode and the negative electrode preferably adopts a pin structure.

Preferably, the male end comprises at least two second connection terminals 202 for communication connection. Because the communication connection has relatively low electricity consumption requirement and safety requirement, the plug-in sheet structure is adopted. Further, providing a plurality of terminals for communication connection may enable transmission of different communication signals or enable the battery pack 100 to be matched with different models of external devices.

In some embodiments, the first clasping member 203 forms a slot, and the first connection terminal 201 is adapted to be inserted into the first clasping member 203 in contact with the entire inner wall of the slot.

In some embodiments, as shown in fig. 7, the second holding member 204 includes two opposite elastic metal sheets, the elastic metal sheets include a guiding section 241, a contact section 242 and a connecting section 243 connected in sequence, the elastic metal sheets are fixed on the housing by the connecting section 243, a distance between the contact sections 242 of the two elastic metal sheets is smaller than a thickness of the second connecting terminal 202, a distance between the guiding sections 241 and the connecting sections 243 of the two elastic metal sheets is larger than the thickness of the second connecting terminal 202, and the second connecting terminal 202 is adapted to be inserted between the two guiding sections 241 and contact the two contact sections 242.

In one embodiment, the electrical interface 2 includes a positive connector 21, a negative connector 22, and a plurality of communication connectors 23, wherein the positive connector 21 and the negative connector 22 are both a first clasping member 201, and the communication connector 23 is a second clasping member 204. Different communication connections 23 are adapted to correspond to different communication protocols or different communication connections 23 are used for transmitting different signals. Those skilled in the art will appreciate that: the positive electrode connecting piece 21 and the negative electrode connecting piece 22 are used for being electrically connected with external equipment to form a loop to realize power supply or charging; the communication connector 23 is used for communication connection with an external device, so that mutual identification of the battery pack 100 and the external device can be achieved.

In some embodiments, the positive electrode connection member 21, the negative electrode connection member 22, and the communication connection member 23 are disposed in this order on the bottom surface 13 of the housing 1 substantially along a straight line.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. An electrical interface provided on one of a battery pack and an external device, adapted to be electrically connected to a corresponding interface on the other of the battery pack and the external device, the battery pack being mountable to the external device, characterized in that:

the electrical interface is a male end, and the corresponding interface on the external equipment is a female end; or the electrical interface is a female end, and the corresponding interface on the external equipment is a male end;

the male end comprises at least one first connecting terminal and at least one second connecting terminal, the first connecting terminal is a contact pin, and the second connecting terminal is an inserting piece;

the female end is provided with a first enclasping piece matched with each first connecting terminal and a second enclasping piece matched with each second connecting terminal.

2. An electrical interface as in claim 1 wherein the male end comprises at least two of the first connection terminals for electrical connection of a positive electrode and a negative electrode, respectively.

3. An electrical interface as in claim 1 wherein said male end comprises at least two of said second connection terminals for communication connection.

4. An electrical interface as in claim 1 wherein the connection terminals of the male end are arranged in a row.

5. The electrical interface of any one of claims 1-4 wherein the first connection terminal is in surface contact when assembled with the first hug and the second connection terminal is in line contact when assembled with the second hug.

6. The electrical interface of claim 5 wherein said second hug member comprises two oppositely disposed resilient metal sheets, said resilient metal sheets comprising a guide section, a contact section and a connecting section connected in sequence, said resilient metal sheets being secured to the housing by said connecting sections, the distance between said contact sections of both said resilient metal sheets being less than the thickness of said second connecting terminal, the distance between said guide sections and said connecting sections of both said resilient metal sheets being greater than the thickness of said second connecting terminal, said second connecting terminal being adapted to be inserted between said guide sections and in contact with said contact sections.

7. A battery pack comprising an electrical interface as claimed in any one of claims 1 to 6.

8. The battery pack of claim 7, wherein the battery pack includes a housing and a battery cell disposed within the housing, the battery pack adapted to fit into a battery compartment of an external device in a first direction, the housing having a bottom surface and a top surface substantially perpendicular to the first direction, the electrical interface disposed on the bottom surface, the electrical interface electrically connected to the battery cell.

9. The battery pack of claim 8, wherein the housing includes a peripheral side surface between the top surface and the bottom surface, the junction of the peripheral side surface with the top surface and/or the bottom surface being curved such that a portion of the surface of the peripheral side surface does not contact an inner wall of the battery compartment when the battery pack is assembled into the battery compartment.

10. External device, characterized in that it comprises an electrical interface according to any of claims 1-6, said external device being a consumer or a charging device.