CN219843112U - Battery and electricity utilization device - Google Patents

Abstract

The utility model discloses a battery and an electric device, wherein the battery comprises: a battery cell, the battery cell comprising: the solar cell comprises a first current collector and a second current collector, wherein the first current collector and the second current collector are mutually overlapped, a tab is arranged on the first current collector, and the tab protrudes relative to the first current collector; a battery protector, the battery protector comprising: the protector comprises a protector body and a first connecting piece, wherein the first connecting piece is connected between the protector body and the second current collector, so that part of the first connecting piece forms a tab. The first connecting piece is connected with the second current collector, part of the first connecting piece forms a tab, connection reliability of the battery protector and the battery core is improved, a connecting loop of the battery is shortened, external impedance of the battery is reduced, and therefore conversion efficiency of the battery is improved.

Description

Battery and electricity utilization device

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery and an electric device.

Background

Battery protection devices for cell phones, notebooks, tablets, etc. on the market generally use PTC, temperature fuses, recoverable temperature breakers, or employ active ic+mos protection schemes.

In the related art, the PTC, the thermal fuse, the secondary protection scheme of the active ic+mos, and the recoverable temperature breaker are all separate elements, and need to be welded with the first polarity or the second polarity end of the battery when in use; the welding increases the manufacturing process cost of the battery, increases the impedance of the charge and discharge output loops of the battery, and the secondary welding increases the quality risk of the product.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a battery, wherein the first connecting piece is connected with the second current collector, part of the first connecting piece forms a tab, the connection reliability of the battery protector and the battery core is improved, the connection loop of the battery is shortened, the external impedance of the battery is reduced, and the conversion efficiency of the battery is improved.

The utility model also provides an electric device.

A battery according to an embodiment of the first aspect of the present utility model includes: a battery cell, the battery cell comprising: the solar cell comprises a first current collector and a second current collector, wherein the first current collector and the second current collector are mutually overlapped, a tab is arranged on the first current collector, and the tab protrudes relative to the first current collector; a battery protector, the battery protector comprising: the protector comprises a protector body and a first connecting piece, wherein the first connecting piece is connected between the protector body and the second current collector, so that part of the first connecting piece forms a tab.

According to the battery provided by the embodiment of the utility model, the first connecting piece is connected with the second current collector, part of the first connecting piece forms the tab, so that the connection reliability of the battery protector and the battery core is improved, the connection loop of the battery is shortened, the external impedance of the battery is reduced, and the conversion efficiency of the battery is improved.

According to some embodiments of the utility model, the first connector comprises: the first connecting section is electrically connected with the protector body, and the second connecting section is located the electric core and is electrically connected with the second current collector.

According to some embodiments of the utility model, the cell further comprises: the first current collector and the second current collector are arranged in the shell; and, the first connector further comprises: the third connecting section is arranged between the first connecting section and the second connecting section, and the third connecting section is connected with the shell.

According to some embodiments of the utility model, the housing is provided with a step at one end in the first direction, the battery protector is provided at the step, and a sealing compound is provided between the third connection section and the step.

According to some embodiments of the utility model, the battery further comprises: the insulating piece is located on the same side with the battery protector, the insulating piece comprises a first insulating part and a second insulating part, the second insulating part is bent relative to the first insulating part, the first insulating part is abutted with the end part of the battery cell, and the second insulating part is abutted with the battery protector.

According to some embodiments of the utility model, the first connector further comprises: the bending section is arranged between the first connecting section and the third connecting section, and the bending section is bent and arranged relative to the first connecting section and the second connecting section.

According to some embodiments of the utility model, the first connection section has a dimension l1 in the first direction, and the protector body has a dimension l2 in the first direction, l1 and l2 satisfying the relation: l1-l2 is more than or equal to 0 and less than or equal to 0.2mm.

According to some embodiments of the utility model, the battery protector further comprises: the second connecting piece, the second connecting piece has the fourth linkage segment, the fourth linkage segment with the size of protector body electricity in first direction is l3, and the size of protector body in first direction is l2, and l2 and l3 satisfy the relational expression: l3-l2 is more than or equal to 0 and less than or equal to 0.2mm.

According to some embodiments of the utility model, the protector body is one of PTC, fuse, temperature switch, temperature fuse.

An electrical device according to an embodiment of the second aspect of the utility model comprises the battery.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of a structure of a battery according to a first embodiment of the present utility model;

fig. 2 is a schematic structural view of a battery protector according to an embodiment of the present utility model;

fig. 3 is an exploded view of a battery protector according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a battery according to a second embodiment of the present utility model;

FIG. 5 is a partial schematic view of FIG. 4;

fig. 6 is an exploded view of a battery according to a second embodiment of the present utility model.

Reference numerals:

100. a battery;

10. a battery cell; 11. a housing; 111. a step portion; 12. a tab;

20. a battery protector; 21. a protector body; 22. a first connector; 221. a first connection section; 222. a second connection section; 223. bending sections; 23. a second connector; 231. a fourth connecting section; 232. a fifth connecting section; 24. sealing;

30. an insulating member; 31. a first insulating portion; 32. and a second insulating portion.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

The following describes a battery 100 according to an embodiment of the present utility model with reference to fig. 1 to 6, and the present utility model also proposes an electric device having the battery 100 described above.

Battery 100 includes a cell 10 and a battery protector 20.

As shown in connection with fig. 1-6, the cell 10 includes: the first current collector and the second current collector are mutually overlapped, the first current collector is provided with a tab 12, and the tab 12 protrudes relative to the first current collector. Specifically, the battery cell 10 includes a first current collector and a second current collector, the first current collector and the second current collector are stacked on each other, a tab 12 is disposed on the first current collector, the tab 12 is connected with a pole, and the tab 12 connects the inside of the battery cell 10 with an external circuit.

As shown in fig. 1 to 3, the battery protector 20 includes: the protector body 21 and the first connection member 22, the first connection member 22 being connected between the protector body 21 and the second current collector such that a part of the first connection member 22 constitutes a tab. Specifically, the battery protector 20 includes a protector body 21 and a first connecting member 22, one end of the first connecting member 22 is electrically connected with the protector body 21, the other end of the first connecting member 22 is electrically connected with the second current collector, a part of the first connecting member 22 can form a tab, the battery protector 20 and the tab are integrated, the battery protector 20 and the tab are not required to be connected separately, the connection reliability is higher, the connection loop of the battery 100 is shorter, the external impedance of the battery 100 is lower, the effective capacity of the battery 100 can be fully exerted, the charge-discharge conversion efficiency of the battery 100 is improved, the charge time of the battery 100 is shortened, the discharge time of the battery 100 is increased, and the manufacturing cost of the battery 100 is saved.

Therefore, the first connecting piece 22 is connected with the second current collector, and part of the first connecting piece 22 forms a tab, so that the connection reliability of the battery protector 20 and the battery cell 10 is improved, the connection loop of the battery 100 is shortened, the external impedance of the battery 100 is reduced, and the conversion efficiency of the battery 100 is improved.

As shown in fig. 2, the first connector 22 includes: the first connection section 221 and the second connection section 222, the first connection section 221 is electrically connected with the protector body 21, and the second connection section 222 is located in the battery cell 10 and is electrically connected with the second current collector. Specifically, the first connecting member 22 includes a first connecting section 221 and a second connecting section 222, and the first connecting section 221 and the second connecting section 222 have conductivity. One side of the first connection section 221 in the height direction is abutted against the protector body 21 and fixedly connected by adopting a welding manner, so that the first connection section 221 is electrically connected with the protector body 21; the second connection section 222 is disposed in the battery core 10, and the second connection section 222 is connected with the second current collector, so that the second connection section 222 and the second current collector can be electrically connected by adopting a welding manner, so that part of the first connection piece 22 forms a tab, a step of welding the battery protector 20 and the tab is omitted, and the connection reliability of the battery protector 20 and the battery core 10 is improved.

As shown in connection with fig. 1, 4 and 6, the cell 10 further includes: a housing 11, wherein the first current collector and the second current collector are both arranged in the housing 11; and, the first connector 22 further includes: and a third connection section provided between the first connection section 221 and the second connection section 222, the third connection section being connected with the housing 11. Specifically, the battery core 10 further includes a housing 11, the first current collector and the second current collector are located in the housing 11, so as to protect the first current collector and the second current collector, and the second connection section 222 is located in the housing 11 and connected to the second current collector. The first connecting piece 22 further comprises a third connecting section, one end of the third connecting section is connected with the first connecting section 221, the other end of the third connecting section is connected with the second connecting section 222, namely, the third connecting section is located between the first connecting section 221 and the second connecting section 222, a through hole is formed in the shell 11, the battery protector 20 penetrates through the through hole, and the third connecting section is matched in the through hole so that the third connecting section is connected with the shell 11, and the battery protector 20 is installed and fixed.

As shown in fig. 6, the case 11 is provided with a stepped portion 111 at one end in the first direction, the battery protector 20 is provided at the stepped portion 111, and the sealing compound 24 is provided between the third connection section and the stepped portion 111. Specifically, the housing 11 is provided with a step portion 111, the step portion 111 is located at one end of the housing 11 in the first direction, the battery protector 20 is disposed below the step portion 111 in the height direction, the battery protector 20 is inserted into the housing 11, the battery protector 20 is partially located in the housing 11, that is, the second connecting section 222 is located in the housing 11, the sealing compound 24 is disposed between the third connecting section and the step portion 111, and the third connecting section is fixedly connected with the housing 11, so that the battery protector 20 and the battery cell 10 are connected together. The material of the sealing compound 24 may be PP, and the sealing compound 24 is heated and fused, and the sealing compound 24 is heated again by using high frequency, so that the sealing compound is well fused with the surface of the shell 11.

As shown in fig. 4 and 6, the battery 100 further includes: the insulator 30, the insulator 30 and the battery protector 20 are located on the same side, the insulator 30 includes a first insulator 31 and a second insulator 32, the second insulator 32 is bent with respect to the first insulator 31, the first insulator 31 is abutted against an end of the battery cell 10, and the second insulator 32 is abutted against the battery protector 20. Specifically, by providing the insulator 30 and dividing the insulator 30 into the first insulator 31 and the second insulator 32, the first insulator 31 abuts against the end of the cell 10, and the second insulator 32 abuts against the battery protector 20, the battery protector 20 is separated from the cell 10 to protect the end of the cell 10, and the protector body 21 is insulated to prevent failure of the short protector body 21.

As shown in fig. 5, the first connector 22 further includes: the bending section 223, the bending section 223 is disposed between the first connecting section 221 and the third connecting section, and the bending section 223 is bent with respect to the first connecting section 221 and the second connecting section 222. Specifically, the first connecting member 22 further includes a bending section 223, the bending section 223 is located between the first connecting section 221 and the third connecting section, the bending section 223 is bent and arranged relative to the first connecting section 221 and the second connecting section 222, the first connecting member 22, the bending section 223 and the third connecting section are arranged in an S-shape, so that the space occupied by the battery protector 20 can be saved, and the battery 100 can be buffered to a certain extent when falling down, so as to improve the connection reliability of the battery 100 and the battery protector 20.

The first connecting member 22 needs to be bent several times during the manufacturing and assembly of the battery 100, so that the material thereof needs to be flexible and easy to bend, and preferably, copper, aluminum, nickel and other conductive materials are selected to ensure low conductive internal resistance.

Referring to fig. 2, the first connection section 221 has a dimension l1 in the first direction, and the protector body 21 has a dimension l2 in the first direction, where l1 and l2 satisfy the relation: l1-l2 is more than or equal to 0 and less than or equal to 0.2mm. Specifically, the difference between the dimension of the first connection section 221 in the first direction and the dimension of the protector body 21 in the first direction is between 0 and 0.2mm to sufficiently connect the first connection section 221 with the protector body 21.

As shown in fig. 1 and 6, the battery protector 20 further includes: the second connection member 23, the second connection member 23 has a fourth connection section 231, the fourth connection section 231 is electrically connected with the protector body 21, the fourth connection section 231 has a dimension l3 in the first direction, the protector body 21 has dimensions l2 in the first direction, and the dimensions l2 and l3 satisfy the relation: l3-l2 is more than or equal to 0 and less than or equal to 0.2mm. Specifically, the battery protector 20 further includes a second connecting member 23, where the second connecting member 23 includes a fourth connecting section 231 and a fifth connecting section 232, the fourth connecting section 231 and the fifth connecting section 232 have conductivity, the fourth connecting section 231 is electrically connected to the protector body 21, and the fifth connecting section 232 is electrically connected to the protection circuit board or to the tab 12 of another battery 100 to form a complete circuit. The difference between the dimension of the fourth connecting section 231 in the first direction and the dimension of the protector body 21 in the first direction ranges from 0 mm to 0.2mm, so that the first connecting section 221 is fully connected with the protector body 21, and the short circuit between the first connecting section 221 and the second connecting section 222 is avoided.

The protector body 21 is one of PTC, fuse, temperature switch, and temperature fuse. The protector body 21 is connected in series in the circuit to detect the current or temperature passing through the protector body 21, and when the current or temperature is abnormal, the circuit is opened to protect the circuit.

The power consumption device according to the embodiment of the second aspect of the present utility model includes the battery 100.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery, comprising:

a cell (10), the cell (10) comprising: the solar cell comprises a first current collector and a second current collector, wherein the first current collector and the second current collector are mutually overlapped, a tab (12) is arranged on the first current collector, and the tab (12) protrudes relative to the first current collector;

a battery protector (20), the battery protector (20) comprising: a protector body (21) and a first connector (22), the first connector (22) being connected between the protector body (21) and the second current collector, such that part of the first connector (22) constitutes a tab.

2. The battery according to claim 1, wherein the first connection member (22) includes: a first connection section (221) and a second connection section (222), wherein the first connection section (221) is electrically connected with the protector body (21), and the second connection section (222) is positioned on the battery cell (10) and is electrically connected with the second current collector.

3. The battery according to claim 2, wherein the cell (10) further comprises: a housing (11), wherein the first current collector and the second current collector are both arranged in the housing (11); the method comprises the steps of,

the first connector (22) further comprises: and a third connecting section arranged between the first connecting section (221) and the second connecting section (222), and connected with the housing (11).

4. A battery according to claim 3, wherein the housing (11) is provided with a step portion (111) at one end in the first direction, the battery protector (20) is provided to the step portion (111), and a sealing compound (24) is provided between the third connection section and the step portion (111).

5. The battery of claim 3, further comprising: the battery protector comprises an insulating piece (30), wherein the insulating piece (30) and the battery protector (20) are positioned on the same side, the insulating piece (30) comprises a first insulating part (31) and a second insulating part (32), the second insulating part (32) is bent relative to the first insulating part (31), the first insulating part (31) is abutted with the end part of the battery cell (10), and the second insulating part (32) is abutted with the battery protector (20).

6. A battery according to claim 3, wherein the first connector (22) further comprises: the bending section (223) is arranged between the first connecting section (221) and the third connecting section, and the bending section (223) is bent relative to the first connecting section (221) and the second connecting section (222).

7. The battery according to claim 2, wherein the first connection section (221) has a dimension l1 in the first direction, and the protector body (21) has a dimension l2 in the first direction, and l1 and l2 satisfy the relation: l1-l2 is more than or equal to 0 and less than or equal to 0.2mm.

8. The battery according to claim 1, wherein the battery protector (20) further comprises: -a second connection piece (23), the second connection piece (23) having a fourth connection section (231), the fourth connection section (231) being electrically connected with the protector body (21), the fourth connection section (231) having a dimension l3 in a first direction, the protector body (21) having dimensions l2, l2 and l3 satisfying the relation: l3-l2 is more than or equal to 0 and less than or equal to 0.2mm.

9. The battery according to claim 1, wherein the protector body (21) is one of PTC, fuse, temperature switch, temperature fuse.

10. An electrical device, comprising: the battery of any one of claims 1-9.