CN211507746U

CN211507746U - Battery pack and battery box assembly

Info

Publication number: CN211507746U
Application number: CN202020471920.2U
Authority: CN
Inventors: 丁青松
Original assignee: NINGBO CONNFLY ELECTRONIC CO Ltd
Current assignee: NINGBO CONNFLY ELECTRONIC CO Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-09-15
Anticipated expiration: 2030-04-03

Abstract

The utility model discloses a battery component, which comprises a battery, a first conducting strip and a second conducting strip, wherein the two conducting strips are respectively fixedly connected with one electrode of the battery; the flash part is arranged to facilitate thinning treatment so as to facilitate the fixedly connecting of the conducting strip and the battery. On the other hand still discloses a battery case subassembly and is used for the above-mentioned battery pack of adaptation, sets up the fixed block and consolidates battery pack and conveniently externally supplies energy again.

Description

Battery pack and battery box assembly

Technical Field

The utility model relates to a battery field, concretely relates to rigid coupling has battery pack of conducting strip and holds battery pack of this battery pack.

Background

The battery is electrically connected with the conducting plate, and the other end of the conducting plate is used for supplying power to the outside, so that the common power supply scheme is adopted; usually, the conducting strip is fixed in the battery box, and the battery is not fixed, so that the use and replacement are convenient. However, the battery and the conductive sheet are not tightly combined, the electrical connection between the battery and the conductive sheet is not reliable, and an oxide layer is formed between the battery and the conductive sheet due to the influence of factors such as long-time discharge and humidity, so that the electrical connection cannot be normally realized.

One solution is to fix the conductive sheet and the battery to reduce the gap between them, and since the battery has a risk of explosion when exposed to high temperature, it is not easy to fix them.

SUMMERY OF THE UTILITY MODEL

To the rigid coupling problem of above-mentioned conducting strip and battery, the utility model provides a battery pack, including battery, first conducting strip and second conducting strip, first conducting strip contains first fixed part and first contact site, the second conducting strip contains second fixed part and second contact site, first fixed part with the second fixed part respectively with one of them electrode rigid coupling of battery, set up first flash portion on the first conducting strip, first flash portion sets up at least near first fixed part.

Further, the first flash portion includes a first flash hole, the first flash hole is disposed at the center of the first fixing portion, and the first flash hole penetrates through the first fixing portion.

Further, the first fixing portion is fixedly connected to a negative electrode of the battery, the first conductive sheet includes a bent portion, the bent portion is disposed between the first fixing portion and the first contact portion, and the first fixing portion is connected to one end of the bent portion.

Further, the first flash portion includes a second flash hole, and the second flash hole is disposed on the bending portion and close to the first fixing portion.

Further, the first conductive sheet is provided with a first protrusion, and the first protrusion is connected to the first fixing portion.

Further, a second flash portion is disposed on the second conductive sheet.

Further, the second flash portion includes a third flash hole, the third flash hole is disposed at the center of the second fixing portion, and the third flash hole penetrates through the second fixing portion.

Further, the second conductive sheet is provided with a second protrusion, and the second protrusion is connected to the second fixing portion.

On the other hand, the utility model also provides a battery box subassembly, including lid, box body, battery box subassembly still contains the aforesaid arbitrary battery pack, battery pack settle in the box body.

Further, a fixing block is arranged on the outer wall of the box body, and the first contact part and the second contact part extend out of the opening of the box body and are arranged on the fixing block.

The utility model has the advantages that: on one hand, the conducting strip is fixedly connected with the battery, so that the contact tightness of the conducting strip and the battery is improved; in addition, the flash part is arranged on the conductive sheet, so that the fixedly connected part of the conductive sheet and the battery can be punched and thinned, and the risk of battery explosion in welding is avoided; on the other hand, the matched battery box component can firmly arrange the battery component, and the extended contact part can conveniently output electric energy to the outside.

Drawings

FIG. 1 is an exploded view of an embodiment of a battery assembly according to the present application;

FIG. 2 is a first conductive sheet according to a first embodiment of the present disclosure;

FIG. 3 is a second conductive sheet according to a first embodiment of the present disclosure;

FIG. 4 is a schematic view of a second conductive sheet embodiment of the present application;

FIG. 5 is an exploded view of an embodiment of a battery pack assembly according to the present application;

reference numerals: 1-battery, 2-first conducting plate, 2 a-first fixed part, 2 b-first contact part, 2c 1-first flash hole, 2c 2-second flash hole, 2 d-first convex part, 2 e-bending part, 3-second conducting plate, 3 a-second fixed part, 3 b-second contact part, 3 c-third flash hole, 3 d-second convex part, 4-box cover, 5-box body, 5 a-fixed block and 6-salient point.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the qualifiers "first" and "second" in the present application only perform a distinguishing function, and do not have a sequential limiting function, nor do they define or distinguish a structural shape. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, the battery assembly includes a battery 1, a first conductive sheet 2 and a second conductive sheet 3, wherein the first conductive sheet 2 includes a first fixing portion 2a and a first contact portion 2b, wherein the second conductive sheet 3 includes a second fixing portion 3a and a second contact portion 3b, the first fixing portion 2a and the second fixing portion 3a are respectively fixed to one of the electrodes of the battery 1, that is, the first fixing portion 2a can be fixed to a positive electrode or a negative electrode of the battery 1, the second fixing portion 3a is fixed to the other electrode of the battery 1, and a first flash portion is disposed on the first conductive sheet 2, and the first flash portion is at least disposed near the first fixing portion 2 a.

Since the battery 1 has a risk of explosion when exposed to high temperature, processes such as soldering and brazing which generate high temperature are not applicable in the scheme, and laser welding and other processes are preferably adopted, and the laser welding has the advantages of controllable heat, small heat affected zone, accurate welding position and the like.

In order to minimize the explosion risk of the battery 1, the welding part of the conducting strip and the battery 1 needs to be thinned, so that the minimum heat requirement value during welding is reduced; in the above-mentioned solution, the first flash portion is provided on the first conductive sheet 2, that is, in order to achieve thinning, and the first flash portion needs to be provided at a position where the conductive sheet needs to be thinned, that is, on or near the first fixing portion 2 a. In actual production, since the conducting strip is already thin, punching and thinning the conducting strip poses challenges to materials, punching force and the like, and the first flash part is used for accommodating materials which are punched and thinned to overflow; particularly when it is desired to make the punch thinner, the effect of the first flash portion is more pronounced, making the punch thinner relatively easy.

Specifically, the first flash portion includes a first flash hole 2c1, the first flash hole 2c1 is disposed at the center of the first fixing portion 2a, and the first flash hole 2c1 penetrates the first fixing portion 2 a. As can be seen from fig. 2, the first conductive sheet 2 in the drawing has been subjected to the punching and thinning process, the first fixing portion 2a is relatively thin compared with other components, and when the first fixing portion 2a is punched, the material of the first conductive sheet 2 can overflow into the first overflow hole 2c1, obviously, the first fixing portion 2a also overflows outwards at the same time. The first flash hole 2c1 may be a circular hole, a square hole, or the like, or may be a non-closed hole, which is not limited.

As shown in fig. 2, the first fixing portion 2a is fixedly connected to the negative electrode of the battery 1, the first conductive sheet 2 includes a bent portion 2e, the bent portion 2e is disposed between the first fixing portion 2a and the first contact portion 2b, and the first fixing portion 2a is connected to one end of the bent portion 2 e. In this embodiment, the first fixing portion 2a and the bending portion 2e are disposed adjacently, and the bending portion 2e makes the first fixing portion 2a integrally supported to have a certain elasticity; therefore, after the battery 1 is installed between the two conducting strips, the first fixing part 2a can drag the battery 1 and the bending part 2e can deform to a certain extent, the situation that the conducting strips and the battery 1 are separated due to factors such as tolerance is avoided, and power supply reliability is improved.

In the above embodiment, since the negative electrode of the battery 1 is thinner than the positive electrode, in order to prevent the negative electrode end of the battery 1 from being broken down or the battery 1 from exploding during the laser welding, the first fixing portion 2a for fixing the negative electrode needs to be processed to be thinner than the negative electrode gasket of the battery 1, so as to further reduce the minimum required heat value for welding, and the heat required for completing the welding can not break down the negative electrode gasket. In a preferred embodiment, as shown in fig. 3, the first flash portion includes a second flash hole 2c2, the second flash hole 2c2 is disposed on the bending portion 2e and close to the first fixing portion 2 a; since the connecting portion of the first fixing portion 2a and the bending portion 2e is also overflowed when the first fixing portion 2a is thinned by punching, and the overflowed material is increased when the first fixing portion is thinned by punching, the second overflowed material hole 2c2 can provide an overflowed material space for the connecting portion, so that the thinning is easier. In the specific production, the first fixing portion 2a may be thinned, and then the connecting portion may be bent to form a bent portion 2 e.

In a more preferred embodiment, the first conductive plate 2 is provided with a first protrusion 2d, and the first protrusion 2d is connected to the first fixing portion 2 a. The first convex part 2d is used for clamping the first conducting plate 2 during laser welding, so that accurate positioning is realized; the first convex portion 2d may be semicircular and may be disposed at both sides of the first fixing portion 2a together with the bent portion 2 e. In addition, the first protrusion 2d may be disposed at other positions of the first conductive plate 2, and is not necessarily connected to the first fixing portion 2a, as long as the first conductive plate 2 is conveniently clamped.

According to actual needs, a second flash portion may be further provided on the second conductive sheet 3. As shown in FIG. 4, the second flash portion includes a third flash hole 3c, the third flash hole 3c is disposed at the center of the second fixing portion 3a, and the third flash hole 3c penetrates the second fixing portion 3 a. The function of the third flash hole 3c is the same as that of the first and second flash holes 2c2, and the third flash hole 3c may be a circular hole, a square hole, or a non-closed hole, which is not limited. Since the positive electrode gasket of the battery 1 is thick and the requirement for the thickness of the second fixing portion 3a is relatively low, the third flash hole 3c can be set to be small in size or even not set under the condition that the battery 1 is ensured to be complete in laser welding, so that the strength of the second conductive sheet 3 is improved.

Similarly, the second conductive plate 3 may be provided with a second protrusion 3d, and the second protrusion 3d is connected to the second fixing portion 3 a. The second protrusion 3d may facilitate the second conductive sheet 3 to be clamped, facilitating accurate welding. Similarly, the second protruding portion 3d may be disposed at other positions of the second conductive plate 3, and is not necessarily connected to the second fixing portion 3a, as long as the second conductive plate 3 is conveniently clamped.

As shown in fig. 5, based on the above battery assembly, the utility model also provides a battery box assembly, including lid 4, box body 5 and the above battery assembly, this battery assembly settles in box body 5. Specifically, a fixing block 5a is arranged on the outer wall of the box body 5, and the first contact part 2b and the second contact part 3b extend out from the opening of the box body 5 and are arranged on the fixing block 5 a; two contact parts penetrate through the clamping grooves of the fixed block 5a and penetrate out of the bottom surface of the fixed block 5a, and electric equipment can be electrically connected with the two contact parts to obtain electric energy; the fixing block 5a enables the battery assembly to be firmly arranged in the box body 5, so that the stability of power supply is realized; the contact part can be a contact pin and can be plugged with an adapter device for supplying power. In addition, as shown in fig. 1, bumps 6 may be provided at the upper ends of the two contact portions, and the bumps 6 are caught in the fixing block 5a to increase the extraction force.

Claims

1. A battery component comprises a battery, a first conducting strip and a second conducting strip, and is characterized in that the first conducting strip comprises a first fixing portion and a first contact portion, the second conducting strip comprises a second fixing portion and a second contact portion, the first fixing portion and the second fixing portion are fixedly connected with one of electrodes of the battery respectively, a first flash portion is arranged on the first conducting strip, and the first flash portion is at least arranged near the first fixing portion.

2. The battery assembly of claim 1, wherein the first flash portion comprises a first flash hole disposed at a center of the first fixing portion, the first flash hole penetrating the first fixing portion.

3. The battery pack of claim 2, wherein the first fixing portion is fixedly connected to the negative electrode of the battery, the first conductive sheet includes a bent portion, the bent portion is disposed between the first fixing portion and the first contact portion, and the first fixing portion is connected to one end of the bent portion.

4. The battery assembly of claim 3, wherein the first flash portion comprises a second flash hole disposed on the bent portion and adjacent to the first fixing portion.

5. The battery pack of claim 4, wherein the first conductive tab is provided with a first protrusion, and the first protrusion is connected to the first fixing portion.

6. The battery pack of claim 1, wherein a second flash is disposed on the second conductive sheet.

7. The battery assembly of claim 6, wherein the second flash portion comprises a third flash hole, the third flash hole being disposed at a center of the second fixing portion, the third flash hole penetrating the second fixing portion.

8. The battery pack of claim 7, wherein the second conductive tab is provided with a second protrusion, and the second protrusion is connected to the second fixing portion.

9. A battery box component comprises a box cover and a box body and is characterized by further comprising any battery component, and the battery component is arranged in the box body.

10. The battery pack assembly of claim 9, wherein a fixing block is provided on an outer wall of the case, and the first contact portion and the second contact portion protrude from the opening of the case and are provided on the fixing block.