CN215816143U

CN215816143U - Battery pack

Info

Publication number: CN215816143U
Application number: CN202121808776.8U
Authority: CN
Inventors: 张少华
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-02-11
Anticipated expiration: 2031-08-04

Abstract

The utility model relates to a battery pack which comprises a battery pack and a battery pack shell used for accommodating the battery pack, wherein the battery pack comprises a plurality of electric cores which are electrically connected with each other, the battery pack shell comprises a first shell and a second shell which are butted with each other, and the first shell covers more than 60% of the volume of the battery pack. The first shell is arranged to cover more than 60% of the volume of the battery pack, so that the first shell and the second shell are unequal, when the battery pack is accidentally impacted by external impact and falls on the ground, the first shell can firstly contact the ground due to gravity, and the first shell has larger volume and stronger impact resistance, so that the first shell and the second shell can be prevented from being separated, and the shell of the battery pack can be prevented from being damaged; compared with the prior art, the battery pack has stronger anti-falling capability, and is favorable for prolonging the service life of the battery pack because the battery pack has stronger anti-falling capability.

Description

Battery pack

Technical Field

The utility model relates to a battery pack, and belongs to the field of battery packs.

Background

At present, along with the development of society, electric tools are widely applied to various fields, a battery pack is an indispensable part, and the battery pack inevitably falls off the ground under the impact of external force in the daily working process, so that the requirement on the impact resistance of a battery pack shell is higher and higher; in the conventional technology, the casing of a common battery pack is equally divided into an upper casing and a lower casing (an upper casing and a lower casing) along the thickness direction of the battery pack, and the volume of the battery pack wrapped by the upper casing or the lower casing accounts for about 50% of the total volume of the battery pack, so that the battery pack is easily damaged in the falling process, and the service life of the battery pack is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery pack which has strong anti-falling capability and can prolong the service life.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a battery pack, includes group battery and the battery pack shell that is used for holding the group battery, the group battery includes a plurality of electric cores that are connected each other electrically, the battery pack shell is including the first casing and the second casing of butt joint, first casing covers the volume more than 60% of group battery.

Further, the first case covers 90% or more of the volume of the battery pack.

Furthermore, the first shell is provided with a sliding part used for being matched with the electrical equipment in a sliding mode and/or a locking part used for being matched with the electrical equipment in a locking mode.

Furthermore, the battery pack comprises a power display module for displaying the residual power in the battery pack.

Further, the battery pack further comprises a power display button for controlling the power display module to start.

Further, the power display module and the power display button are disposed at one end of the second housing.

Further, the battery pack includes a USB interface.

Further, the USB interface is disposed at one end of the second housing.

Further, the battery pack shell is made of a plastic material.

Further, the first shell and the second shell are arranged in front and back in the length direction of the battery pack shell; or the first shell and the second shell are arranged left and right in the width direction of the battery pack shell; or, the first shell and the second shell are arranged up and down in the height direction of the battery pack shell.

The utility model has the beneficial effects that: the battery pack shell comprises a first shell and a second shell, wherein the first shell is arranged to cover more than 60% of the volume of the battery pack, so that the first shell and the second shell are unequal, when the battery pack is accidentally impacted by external impact and falls to the ground, the first shell can firstly contact the ground due to gravity, and the first shell is larger in volume and higher in impact resistance, so that the first shell and the second shell can be prevented from being separated, and the battery pack shell can be prevented from being damaged; compared with the prior art, the battery pack has stronger anti-falling capability, and is favorable for prolonging the service life of the battery pack because the battery pack has stronger anti-falling capability.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

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

fig. 2 is an exploded view of the battery pack shown in fig. 1;

fig. 3 is a schematic structural view of a battery pack according to another embodiment of the present application;

fig. 4 is an exploded view of the battery pack shown in fig. 3.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

Referring to fig. 1 and 2, a battery pack 10 according to an embodiment of the present disclosure is used to supply power to an electrical device, such as a power tool. The battery pack 10 includes a battery pack, a battery pack case 2 for accommodating the battery pack, a holder (not shown) disposed in the battery pack case 2, and a control unit 3 in signal connection with the battery pack. The battery pack is fixed in the battery pack case 2 through a bracket. The battery pack 10 in this embodiment is substantially rectangular in shape, but in other embodiments, the battery pack 10 may have other shapes. For convenience of description, and according to the inserting and pulling direction of the battery pack 10, taking fig. 1 as a reference direction, the direction indicated by the arrow a1-a2 in fig. 1 is the length direction of the battery pack 10, which is defined as the front-back direction, wherein the direction indicated by the arrow a1 is the front direction; the direction indicated by the arrow b1-b2 is the width direction of the battery pack 10, which is defined as the left-right direction, wherein the direction indicated by the arrow b1 is the left side; arrows c1-c2 indicate the height direction of the battery pack 10, which is defined as the up-down direction, wherein the direction indicated by the arrow c1 is the up direction.

The battery pack comprises a plurality of electric cores 1 which are electrically connected with each other, and the electric cores 1 are rechargeable electric cores 1. In this embodiment, the number of the battery cells 1 is four, and certainly, in other embodiments, the number of the battery cells 1 may be determined according to the actual situation and the capacity of the battery pack case 2. The battery cell 1 is made of a conventional technology, so that a detailed description thereof is omitted here, and the battery cell 1 is mounted in a bracket, so that the battery cell 1 is fixed in the battery pack case 2 through the bracket.

The battery pack case 2 is made of a plastic material. An accommodating cavity for accommodating the battery pack is formed in the battery pack case 2. The battery pack case 2 includes a first case 21 and a second case 22 that are butted. The first housing 21 encloses to form a first sub-containing portion, the second housing 22 encloses to form a second sub-containing portion, and the containing cavity is formed by the first sub-containing portion and the second sub-containing portion. In the present embodiment, the first case 21 and the second case 22 are arranged back and forth in the longitudinal direction a1-a2 of the battery pack 10, and the second case 22 is located on the front side of the first case 21. By such an arrangement, when the battery pack 10 falls to the ground due to an accidental external impact, the first housing 21 contacts the ground first due to gravity, and the first housing 21 has a larger volume and a stronger impact resistance, so that the first housing 21 and the second housing 22 can be prevented from being separated, and the battery pack case 2 can be prevented from being damaged; compared with the prior art, the battery pack 10 has stronger anti-falling capability, and is favorable for prolonging the service life of the battery pack 10 due to the stronger anti-falling capability.

In the present embodiment, the first case 21 covers 90% of the volume of the battery pack, and by covering the first case 21 with 90% of the volume of the battery pack, the battery pack is substantially accommodated in the first case 21 when assembled, so that this arrangement facilitates the assembly of the battery pack 10.

In the present embodiment, the first case 21 is larger than the second case 22, and correspondingly, the capacity of the first sub-receiving portion is larger than the capacity of the second sub-receiving portion, and the capacity of the first sub-receiving portion in the present embodiment is more than 90% of the capacity of the battery pack case 2.

The battery pack case 2 has a front end 221 and a rear end 211 disposed opposite to each other. The first housing 21 is formed with a slide portion 212 for slidably engaging with an electrical device (not shown), the slide portion 212 extends from the rear end 211 of the first housing 21 in the direction of the front end 221 of the second housing 22, and an insertion opening 210 of the slide portion 212 is formed at the rear end 211. Specifically, the sliding portion 212 is a sliding groove 212 formed on the surface of the first housing 21, and a sliding block (not shown) that fits in the sliding groove 212 is correspondingly formed on the electrical device. The number of the sliding grooves 212 is two arranged in parallel. In other embodiments, the sliding groove 212 may be formed in the second housing 22, or the sliding groove 212 may be formed in both the first housing 21 and the second housing 22. The sliding part 212 may be a sliding block, and correspondingly, a sliding groove may be formed in the electrical device, and when the sliding part 212 is a sliding block, the sliding block may be formed only in the first casing 21, or both the first casing 21 and the second casing 22, or only in the second casing 22. In order to enhance the insertion force and the fixing strength between the battery pack 10 and the electrical device, a locking portion 213 for locking and mating with the electrical device is further formed on the first housing 21, the locking portion 213 is a groove, and the groove 213 is engaged with a fastener (not shown) on the electrical device. Of course, in other embodiments, the battery pack case 2 may be provided with only the locking portion or the sliding portion. In the present embodiment, the sliding part 212 and the locking part 213 are both disposed on the first housing 21, so that the battery pack 10 and the electrical device can be assembled more smoothly, that is, when the battery pack 10 is coupled to the electrical device, the locking part 213 and the electrical device complete the locking coupling at the same time when the sliding part 212 and the electrical device complete the sliding coupling.

In order to facilitate the charging of the battery pack 10, the battery pack 10 further includes a USB interface 222, in this embodiment, the USB interface 222 is disposed at the front end 221 of the second housing 22, and a dust cover 225 made of rubber is disposed on the USB interface 222. In order to observe the power of the battery pack 10, the front end 221 is further provided with a power display module 223 for displaying the remaining power of the battery pack 10 and a power display button 224 for controlling the power display module 223 to start. The power display button 224 and the power display module 223 are controlled by the control unit 3 in the battery pack 10, and the power display button 224, the power display module 223, the control unit 3 and the battery pack are controlled by the prior art, which will not be described in detail herein. In other embodiments, the USB interface 222, the power display module 223, and the power display button 224 may be provided on the first housing 21. By providing the USB interface 222, the power display module 223, and the power display button 224 at the front end 221 of the second housing 22, operation and observation are facilitated. Referring to fig. 3 and 4, a battery pack 20 according to another embodiment of the present application is similar to the battery pack 10 according to the first embodiment, except that: the battery pack case 5 has a different structure, and specifically, the battery pack 20 also has a first case 51 and a second case 52, wherein the first case 51 and the second case 52 are arranged left and right in the width direction b1-b2 of the battery pack 20, and the first case 51 covers 90% of the volume of the battery pack in this embodiment.

In addition to the above two embodiments, the first housing and the second housing may be arranged as follows: the first shell and the second shell are arranged up and down in the height direction c1-c2 of the battery pack shell.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A battery pack comprises a battery pack and a battery pack shell used for containing the battery pack, wherein the battery pack comprises a plurality of electric cores which are electrically connected with each other, the battery pack shell comprises a first shell and a second shell which are butted with each other, and the first shell covers more than 60% of the volume of the battery pack.

2. The battery pack of claim 1, wherein the first housing covers more than 90% of the volume of the battery pack.

3. The battery pack according to claim 1, wherein the first housing is provided with a sliding portion for slidably engaging with the electrical device and/or a locking portion for lockingly engaging with the electrical device.

4. The battery pack of claim 1, wherein the battery pack comprises a power display module for displaying the amount of power remaining in the battery pack.

5. The battery pack of claim 4, further comprising a charge display button for controlling activation of the charge display module.

6. The battery pack of claim 5, wherein the charge level display module and the charge level display button are disposed at one end of the second housing.

7. The battery pack of claim 1, wherein the battery pack comprises a USB interface.

8. The battery pack of claim 7, wherein the USB interface is disposed at one end of the second housing.

9. The battery pack of claim 1, wherein the battery pack housing is made of a plastic material.

10. The battery pack according to any one of claims 1 to 9, wherein the first case and the second case are arranged back and forth in a length direction of the battery pack case; or the first shell and the second shell are arranged left and right in the width direction of the battery pack shell; or, the first shell and the second shell are arranged up and down in the height direction of the battery pack shell.