CN211789210U

CN211789210U - Battery pack

Info

Publication number: CN211789210U
Application number: CN202020841128.1U
Authority: CN
Inventors: 何辉局
Original assignee: Guangdong Qiancheng Power Technology Co ltd
Current assignee: Guangdong Qiancheng Power Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-10-27
Anticipated expiration: 2030-05-19

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack, which comprises a battery pack body, wherein the battery pack body comprises a plurality of monocells and a bracket for fixing the monocells, the bracket is made of insulating materials and is provided with a groove for accommodating the monocells, the outer wall of the monocell is abutted against the inner wall of the groove, the electrode of the monocell is abutted against the bottom wall of the groove, and the bottom wall of the groove is provided with a through hole; the battery cell structure is characterized by further comprising a conductive current-carrying sheet, wherein a plurality of conductive contacts are arranged at the through hole of the conductive current-carrying sheet and are abutted to the battery cell electrode, and the conductive contacts are welded on the battery cell electrode. Through the butt of the motor terminal surface of diapire in the support recess and monocell, can replace highland barley paper to prevent because battery case is damaged, avoid the positive negative pole direct contact of group battery to take place the short circuit, need not use highland barley paper, practiced thrift the cost of manufacture of group battery, saved the step of equipment group battery, improved the efficiency of equipment group battery.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field, more specifically say, it relates to a group battery.

Background

Secondary batteries such as lithium ion secondary batteries and nickel hydrogen batteries, and storage elements such as capacitors are single cells, and a plurality of battery packs each including the single cells connected in series or in parallel via bus bars are increasingly important as power sources mounted on vehicles, power sources for personal computers, portable terminals, and the like. In particular, an assembled battery in which a lithium ion secondary battery that is lightweight and can achieve high energy density is used as a single battery is suitably used for a high-output power supply for mounting on a vehicle or the like.

The storage battery in the existing electric vehicle generally comprises a battery pack, a battery pack bracket and a connecting sheet for connecting the anode and the cathode of each battery, wherein highland barley paper is required to be pasted on each battery before the connecting sheet is welded, so that the situation that the anode and the cathode of the battery pack are in direct contact with each other to cause short circuit due to the damage of a battery shell is prevented, and the manufacturing cost of the battery pack is increased due to the fact that the highland barley paper is pasted.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model aims at providing a group battery has advantage with low costs.

The above technical purpose of the present invention can be achieved by the following technical solutions: a battery pack comprises a battery pack body, wherein the battery pack body comprises a plurality of monocells and a bracket for fixing the monocells, the bracket is made of insulating materials, the bracket is provided with a groove for accommodating the monocells, the outer wall of each monocell is abutted against the inner wall of the groove, the electrodes of the monocells are abutted against the bottom wall of the groove, and the bottom wall of the groove is provided with a through hole; the battery cell structure is characterized by further comprising a conductive current-carrying sheet, wherein a plurality of conductive contacts are arranged at the through hole of the conductive current-carrying sheet and are abutted to the battery cell electrode, and the conductive contacts are welded to the battery cell electrode.

According to the technical scheme, when the battery pack is assembled, the single batteries are fixed in the direct inner grooves, the electrodes of the single batteries correspond to the through holes in the support, the conductive current-carrying pieces are installed on the other side of the support, the conductive contacts of the conductive current-carrying pieces extend into the through holes and are abutted against the electrodes of the single batteries, and then the conductive contacts and the electrodes of the single batteries are welded together, so that the assembly of the battery pack is completed; through the butt of the motor terminal surface of diapire in the support recess and monocell, can replace highland barley paper to prevent because battery case is damaged, avoid the positive negative pole direct contact of group battery to take place the short circuit, need not use highland barley paper, practiced thrift the cost of manufacture of group battery, saved the step of equipment group battery, improved the efficiency of equipment group battery.

Preferably, the conductive contacts are connected to the current carrying sheet by fusible metal wires.

Through the technical scheme, the metal wire is fused under the condition that the abnormal current of the battery pack is overlarge, and the fused battery pack is disconnected in current, so that the battery pack can be protected from being damaged.

Preferably, the through hole is a circular through hole.

Through the technical scheme, the circular through hole is better matched with the positive electrode and the negative electrode of the power supply, dust is reduced from entering the battery pack, and the service life of the battery pack is prolonged.

Preferably, the conductive current-carrying sheet is made of nickel alloy.

Through the technical scheme, the nickel alloy has good oxidation resistance and electrical conductivity, is beneficial to the electrical conduction among monocells, and is also beneficial to prolonging the service life of a battery pack.

Preferably, the conductive contact is circular.

Through the technical scheme, the circular conductive contact is beneficial to full contact of the current-carrying sheet and the electrode of the single cell, and poor conductivity caused by poor contact is avoided.

Preferably, the metal wire, the current-carrying sheet and the conductive contact are integrally processed.

Through above-mentioned technical scheme, avoid the wire fracture under the exogenic action, cause the unable use of electrically conductive current-carrying piece, practiced thrift the cost.

To sum up, the utility model discloses beneficial effect who has: when the battery pack is assembled, the single batteries are fixed in the direct inner grooves, so that the electrodes of the single batteries correspond to the through holes on the bracket, the conductive current-carrying piece is arranged on the other side of the bracket, the conductive contact of the conductive current-carrying piece extends into the through hole and is abutted against the electrodes of the single batteries, and the conductive contact is welded with the electrodes of the single batteries together, so that the assembly of the battery pack is completed; through the butt of the motor terminal surface of diapire in the support recess and monocell, can replace highland barley paper to prevent because battery case is damaged, avoid the positive negative pole direct contact of group battery to take place the short circuit, need not use highland barley paper, practiced thrift the cost of manufacture of group battery, saved the step of equipment group battery, improved the efficiency of equipment group battery.

Drawings

Fig. 1 is a structural view of an embodiment of the present invention;

fig. 2 is a front view of an embodiment of the present invention;

fig. 3 is a cross-sectional view of an a-a interface of an embodiment of the present invention;

fig. 4 is an enlarged view of the embodiment of the present invention at B.

Reference numerals: 1. a single cell; 2. a support; 3. a conductive current-carrying sheet; 4. a conductive contact; 5. a metal wire; 6. and a through hole.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

A kind of assembled battery, refer to fig. 1 to 4, while assembling the assembled battery, fix the single cell 1 in the direct internal recess, make the electrode of a plurality of single cells 1 correspond to a plurality of via holes 6 on the support 2, mount the conductive current-carrying chip 3 on another side of support 2, make the conductive contact 4 of the conductive current-carrying chip 3 stretch into the via hole 6 and contact with electrode of the single cell 1, weld the conductive contact 4 and electrode of the single cell 1 together, has finished the assembly of the assembled battery; the bottom wall in the groove of the support 2 is abutted against the end face of the motor of the monocell 1, highland barley paper can be replaced to prevent short circuit caused by direct contact of the anode and the cathode of the battery pack due to the damage of a battery shell, highland barley paper is not needed, the manufacturing cost of the battery pack is saved, the step of assembling the battery pack is saved, and the efficiency of assembling the battery pack is improved.

Specifically, the conductive contact 4 and the current-carrying sheet are connected by a fusible metal wire 5. When the abnormal working current of the battery pack is overlarge, the metal wire 5 is fused, and the current of the fused battery pack is cut off, so that the battery pack can be protected from being damaged.

Specifically, the through hole 6 is a circular through hole 6. The circular through hole 6 is better matched with the positive electrode and the negative electrode of the power supply, dust is reduced from entering the battery pack, and the service life of the battery pack is prolonged.

Specifically, the conductive current-carrying sheet 3 is made of nickel alloy. The nickel alloy has good oxidation resistance and electrical conductivity, is beneficial to the electrical conduction among the single cells 1 and is also beneficial to prolonging the service life of the battery pack.

Specifically, the conductive contact 4 is circular. The round conductive contact 4 is beneficial to the full contact between the current-carrying sheet and the electrode of the single cell 1, and the poor conductivity caused by poor contact is avoided.

Specifically, the metal wire 5, the current-carrying sheet, and the conductive contact 4 are integrally formed. The metal wire 5 is prevented from being broken under the action of external force, the conductive current-carrying sheet 3 cannot be used, and the cost is saved.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims

1. A battery pack, characterized by: the battery pack comprises a battery pack body, wherein the battery pack body comprises a plurality of single cells (1) and a bracket (2) used for fixing the single cells (1), the bracket (2) is made of insulating materials, the bracket (2) is provided with a groove used for accommodating the single cells (1), the outer wall of each single cell (1) is abutted against the inner wall of the groove, the electrode of each single cell (1) is abutted against the bottom wall of the groove, and the bottom wall of the groove is provided with a through hole (6); the battery cell structure is characterized by further comprising a conductive current-carrying sheet (3), wherein a plurality of conductive contacts (4) are arranged on the conductive current-carrying sheet (3) at the positions of the through holes (6), the conductive contacts (4) are abutted to the electrodes of the battery cells (1), and the conductive contacts (4) are welded to the electrodes of the battery cells (1).

2. A battery pack according to claim 1, wherein: the conductive contact (4) is connected with the current-carrying sheet through a fusible metal wire (5).

3. A battery pack according to claim 1, wherein: the through hole (6) is a circular through hole (6).

4. A battery pack according to claim 1, wherein: the conductive current-carrying sheet (3) is made of nickel alloy.

5. A battery pack according to claim 1, wherein: the conductive contact (4) is circular.

6. A battery pack according to claim 2, wherein: the metal wire (5), the current-carrying sheet and the conductive contact (4) are integrally processed.