CN210167429U

CN210167429U - Battery and battery pack

Info

Publication number: CN210167429U
Application number: CN201921583742.6U
Authority: CN
Inventors: 蒋世用; 汪高峰; 段科; 何意; 吴超; 周志红
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-03-20
Anticipated expiration: 2029-09-23

Abstract

The utility model relates to a battery and group battery, the battery includes: a battery body (1) comprising a plurality of cells (12); the two first connecting terminals (2) are both arranged at one end of the battery body (1) and are both connected with the plurality of battery cores (12), and the two first connecting terminals (2) are both positive connecting terminals or both negative connecting terminals; and the end face of the battery body (1) provided with the first connection terminals (2) is rectangular in shape, and the two first connection terminals (2) are spaced at an angle of 150-210 degrees in the circumferential direction of the center of the rectangle. Use the technical scheme of the utility model, the position that has improved the position of the battery that exists among the prior art and has changed back binding post also changes and the operating personnel who leads to obscures easily problem, is favorable to reducing the probability that operating personnel takes place the wiring mistake, also is favorable to improving operating personnel's work efficiency.

Description

Battery and battery pack

Technical Field

The utility model relates to an electrical storage device field particularly, relates to a battery and group battery.

Background

In the related art, a plurality of energy storage cells are connected in series and/or in parallel to provide electric energy for electric equipment. A plurality of battery cores are connected in series and/or in parallel to form a battery module, and a plurality of battery modules are connected in series and/or in parallel to form a battery box (pack). A plurality of battery boxes (pack) are connected in series and/or parallel to form a battery cluster. Then, the battery cluster is used as an energy storage unit to provide electric energy for the electric equipment so as to reach the required voltage and electric energy storage of the electric equipment.

Taking a 1MW lithium titanate energy storage container as an example, the number of battery cells included in the energy storage container can reach ten thousand, and the number of battery modules therein also reaches thousands. In whole energy storage container, the real-time conditions of each electric core such as temperature, voltage etc. all need to be monitored to guarantee energy storage container's safety. The battery module is as the minimum integrated unit in the energy storage container, generally need dispose voltage acquisition line connection interface and temperature acquisition line interface on copper bar in groups, causes the electric core surface to have numerous cables to walk through, has increaseed the unsafe coefficient of battery, especially probably leads to producing great incident when voltage acquisition line short circuit, therefore the pencil of power acquisition line is arranged and is needed regularly, protects, to the evading of risk to ensure the security of circuit.

In addition, be provided with two positive terminal and two negative terminal on the top surface of every battery module to in series connection or the parallelly connected of battery module are convenient for realize, the battery box includes the box and arranges a plurality of battery modules in the battery box side by side. However, when the position of the battery module is changed, the positions of the positive terminal and the negative terminal are also changed accordingly, so that the operator may easily mix the positive terminal and the negative terminal or spend a lot of time adjusting the terminals to the desired positions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery and group battery to the position that the position of the battery that exists among the improvement changes back binding post also changes and the operating personnel who leads to confuses easily problem.

According to the utility model discloses an aspect of the embodiment, the utility model provides a battery, the battery includes:

the battery comprises a battery body and a battery cover, wherein the battery body comprises a plurality of battery cells;

the two first connecting terminals are arranged on the same end face of the battery body and are connected with the plurality of battery cores, and the two first connecting terminals are both positive connecting terminals or both negative connecting terminals; and

the end surface of the battery body, at which the first connection terminals are provided, is rectangular in shape, and the two first connection terminals are spaced apart at an angle of 150 ° to 210 ° in the circumferential direction of the center of the rectangle.

Optionally, the two first connection terminals are spaced apart in the circumferential direction of the center of the rectangle by an angle of 170 ° to 200 °.

Optionally, the two first wire terminals are spaced apart by an angle of 180 ° in the circumferential direction of the center of the rectangle.

Optionally, the battery further includes two second connection terminals provided at the same end of the battery body as the first connection terminal, the two second connection terminals being spaced apart at an angle of 150 ° to 210 ° in a circumferential direction of a center of the rectangle.

Optionally, the first connection terminal is disposed at a top end of the battery body.

Optionally, the battery body includes a plurality of battery cells arranged side by side and a heat dissipation air duct located between two adjacent battery cells.

Optionally, the plurality of battery cells are arranged in rows and columns, and the heat dissipation air duct is formed between two adjacent rows and/or two adjacent columns of battery cells.

Optionally, the battery further comprises:

the signal acquisition circuit is connected with the battery body;

and the wiring groove is arranged on the end face, provided with the first wiring terminal, of the battery body and used for arranging a signal acquisition circuit in the wiring groove.

Optionally, the battery body includes a plurality of battery cells arranged side by side along a first direction, tabs of the plurality of battery cells are connected by a conductive connecting member extending along the first direction, and the wiring groove includes a first wiring groove arranged on one side of a row of tabs connected with the conductive connecting member.

Optionally, the battery body further includes a base for bearing the battery core, and a positioning groove for placing the battery core is provided on the base.

According to the utility model discloses an on the other hand still provides a group battery, and this group battery includes:

a box body;

a plurality of the above batteries are arranged side by side in the case.

Optionally, a vent hole is provided on a side wall of one or both ends of the case in the width direction thereof.

Optionally, the vent hole is communicated with a heat dissipation air duct between two adjacent battery cells of the battery.

Alternatively, the terminals of a plurality of batteries arranged side by side are connected in series.

Use the technical scheme of the utility model, after the terminal surface transposition position that is equipped with binding post of battery, the position of one in two first binding post is unanimous basically with another first binding post's original position, consequently has improved the position of the battery that exists among the prior art and has changed back binding post's position and also change and the problem that the operating personnel that leads to obscured easily, is favorable to reducing the probability that operating personnel took place the wiring mistake, also is favorable to improving operating personnel's work efficiency.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 shows a schematic structural diagram of a battery according to an embodiment of the present invention;

fig. 2 is a schematic front view of a battery according to an embodiment of the present invention;

fig. 3 shows a schematic side view of a battery according to an embodiment of the present invention; and

fig. 4 is a schematic view showing the battery shown in fig. 1 after the battery is rotated by 180 °.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Fig. 1 shows a schematic perspective view of the battery of the present embodiment. Fig. 2 shows a schematic front view of the battery of the present embodiment. Fig. 3 shows a schematic side view of the battery of the present embodiment.

As shown in fig. 1 to 3, the battery of the present embodiment includes a battery body 1, two first connection terminals 2 and two second connection terminals 3 mounted on the top end of the battery body 1. The first connection terminal 2 and the second connection terminal 3 are electrically connected to the battery body 1. One of the first connecting terminal 2 and the second connecting terminal 3 is a positive connecting terminal, and the other one is a negative connecting terminal. The battery of the present embodiment is a battery module.

The shape of the tip of the battery body 1 is rectangular, and the two first connection terminals 2 are spaced 150 ° to 210 ° in the circumferential direction of the center of the end face of the tip of the battery body 1. Therefore, after the positions of the two ends of the top surface of the battery body 1 are adjusted, the position of one of the two first wiring terminals 2 is basically consistent with the original position of the other first wiring terminal 2, so that the problem that the positions of the wiring terminals are changed after the position of the battery is changed in the prior art, so that operators are easy to confuse is solved, the probability of wiring errors of the operators is favorably reduced, and the working efficiency of the operators is also favorably improved.

Preferably, two of the first connection terminals 2 are spaced at an angle of 170 ° to 200 ° in a circumferential direction of a center of the rectangle

Preferably, the two first connection terminals 2 are spaced at an angle of 180 ° in the circumferential direction of the center of the rectangle, and the positions of the two first connection terminals 2 are interchanged after the positions of both ends of the top surface of the battery body 1 are adjusted. Fig. 4 shows a schematic structural view of the battery of the present embodiment after being rotated by 180 °.

Further, the two second connection terminals 3 are spaced 180 ° apart in the circumferential direction of the center of the end face of the tip end of the battery body 1.

The top of the battery of this embodiment is the rotational symmetry figure, and when constituteing the group battery with the battery, the battery has prevents slow-witted function, is favorable to reducing operating personnel wiring wrong probability, also is favorable to improving operating personnel's work efficiency.

The battery body 1 includes a base 11, a plurality of battery cells 12 arranged on the base 11, and a cover plate 14 covering the plurality of battery cells 12. The cover plate 14 and the base plate 11 are coupled to fix the plurality of battery cells 12 between the cover plate 14 and the base plate 11.

The battery body 1 further includes a connecting member 13, a first end of the connecting member 13 is connected to the base 11, and a second end of the connecting member 13 is connected to the lid 14. The edge of the cover plate 14 is provided with a projection 14a for connection with the connection member 13. The projection 14a is connected to the connection member 13 by a rivet or a screw connection.

In some embodiments, the connecting member 13 is integral with the base 11.

The base 11 is provided with a positioning portion adapted to the battery cell 12 to prevent the battery cell 12 from moving relative to the base 11. Optionally, the positioning portion includes a groove disposed on the base 11, and the groove is adapted to the bottom end of the battery cell 12, so as to define the bottom end of the battery cell 12 in the groove.

In some embodiments, the cover plate 14 is provided with a positioning portion adapted to the battery cell 12, and the positioning portion includes a groove provided on the cover plate 14, and the groove is adapted to the top end of the battery cell 12.

The tabs of the battery cells 12 are located at the top ends of the battery cells 12, and the cover plate 14 is provided with through holes corresponding to the tabs of the battery cells 12. The through holes are arranged in one-to-one correspondence with the tabs of the battery cells 12.

The battery body 1 comprises a plurality of battery cells 12 arranged in rows and columns, wherein two tabs are arranged at the top end of each battery cell 12 and are respectively a positive tab and a negative tab. The battery body 1 includes a plurality of rows of battery cells 12, and each row of battery cells 12 includes a plurality of battery cells 12 arranged side by side in a first direction. The tabs of each row of cells 12 are arranged in two rows.

Each row of cells 12 includes a plurality of adjacent first cells and a plurality of adjacent second cells. The positive electrode tab of the first battery cell is arranged on the left side, and the negative electrode tab is arranged on the right side. The negative electrode tab of the second battery cell is arranged on the left side, and the positive electrode tab is arranged on the right side. The positive lugs of a plurality of adjacent first electric cores and the negative lugs of a plurality of adjacent second electric cores are arranged into one row, and the positive lugs of a plurality of first electric cores and the negative lugs of a plurality of second electric cores are connected with the same conductive connecting piece 16, so that a plurality of parallel first electric cores are connected with a plurality of parallel second electric cores in series. The negative electrode lugs of the adjacent first battery cells are connected with the negative electrode wiring terminal, and the positive electrode lugs of the adjacent second battery cells are connected with the negative electrode wiring terminal.

In this embodiment, the battery body 1 includes two rows of electric cores 12, and the battery body 1 includes two positive electrode connection terminals and two negative electrode connection terminals.

As shown in fig. 1, the battery body 1 of the present embodiment includes two rows of battery cells 12, and the tabs of each row of battery cells 12 are arranged in two rows, so that four rows of tabs from left to right are arranged at the top end of the battery cell body 1 of the present embodiment. Each row of cells 12 includes 8 cells. The left row of battery cells comprises four adjacent first battery cells and four adjacent second battery cells, the left-most row of electrode lugs comprises negative electrode lugs of the four adjacent first battery cells and positive electrode lugs of the four adjacent second battery cells, and the left-most row of electrode lugs are connected together through the same conductive connecting piece 16 extending along the first direction. The positive lugs of the four first battery cells are all connected with the same first wiring terminal 2, and the negative lugs of the four second battery cells are all connected with the same second wiring terminal 3. The arrangement of the other row of cells 12 is similar to that of the left row of cells, and is not described herein.

As can be seen, the battery body 1 includes four sets of cells 12 connected in series, where each set of cells includes four cells 12 connected in parallel.

The battery body 1 further includes a heat dissipation air duct 15 located between two adjacent battery cells 12. Preferably, the heat dissipation duct 15 extends from one end of the battery body 1 to the other end of the battery body 1. Preferably, the width of the heat dissipation duct 15 is 3 mm.

In some embodiments, the plurality of cells 12 are arranged in rows and columns, and the heat dissipation duct 15 is formed between two adjacent rows or two adjacent columns of cells 12. The heat dissipation duct 15 extends in the length direction or the width direction of the battery.

In this embodiment, the battery still includes the signal acquisition circuit of being connected with battery body 1 and sets up the wiring groove on battery body 1's top surface, and the signal acquisition circuit is arranged in the wiring groove to improve the battery that exists among the prior art and have the problem of potential safety hazard because of the wiring is mixed and disorderly.

The upper surface of the lid plate 14 of the battery body 1 is the top surface of the battery body 1, and the wiring groove is provided on the lid plate 14.

The battery body 1 includes a plurality of battery cells 12 arranged side by side in a first direction and a conductive connecting member 16 connected to each of tabs of the plurality of battery cells 12. The signal acquisition line is connected to the conductive connection 16. The wiring grooves include a first wiring groove arranged on one side of a row of tabs connected to the conductive connecting member 16.

The signal acquisition circuit comprises a voltage acquisition circuit and a temperature acquisition circuit. The temperature acquisition circuit includes a temperature sensor connected to the conductive connector 16 and a cable connected to the temperature sensor. At least a portion of the cable is disposed in the wiring groove.

According to the utility model discloses an another aspect still provides a group battery, and the group battery includes foretell battery and box. A plurality of batteries are arranged side by side in the case.

The side wall of the box body is provided with a heat dissipation air duct 15 opposite to the air vent, and the air vent is arranged on the side wall of the box body along the two ends of the width direction of the box body. The width of the box body is less than the length of the box body. Therefore, the length of the heat dissipation duct 15 of the battery pack is short, which is advantageous for improving the heat dissipation efficiency.

The battery pack further comprises a positive terminal and a negative terminal which are connected with the batteries, and the positive terminal and the negative terminal are arranged at the same end of the box body in the length direction.

Specifically, a plurality of batteries are arranged side by side in the case along the length direction of the case, and one first connection terminal 2 and one second connection terminal 3 of the battery located at one end of the case in the length direction are connected to the positive terminal and the negative terminal of the battery pack, respectively. The other first connection terminal 2 and the other second connection terminal 3 of the battery are connected to other batteries.

The positive terminal and the negative terminal of the battery pack of this embodiment are located at one end of the box body, and the positive binding post and the negative binding post of the plurality of batteries are arranged side by side along the arrangement direction of the plurality of batteries. The wiring terminals arranged along the arrangement direction of the batteries and positioned in the box body are sequentially connected to realize series connection of the batteries, so that wiring in the battery pack is regular, and potential safety hazards are reduced.

The assembly process of the battery pack of the present embodiment is as follows:

1. mounting the electric cores 12 of the aluminum shell on the base 11 in a four-in-four-string (4P4S) manner;

2. an upper cover plate 14, wherein two side protrusions 14a of the cover plate 14 are connected with the connecting parts 13 through riveting screws, so that 16 battery cells 12 are firmly fixed between the base 11 and the cover plate 14;

3. placing the assembled semi-finished battery on a welding table, welding a series aluminum bar (a conductive connecting piece 16) at the positive electrode and the negative electrode of the battery core 12, wherein the series aluminum bar is provided with a pressed bolt structure, the bolt structure is used for connecting a signal acquisition circuit, and then four batteries in parallel and four strings (4P4S) are arranged;

4. 3 batteries are arranged in a box body of a battery PACK (PACK), each battery is provided with 4 wiring terminals, adjacent batteries are connected in series through flexible connection, 2 wiring terminals are respectively arranged at two ends of the 3 batteries after the batteries are connected in series, 2 wiring terminals at one end are connected in series through an aluminum row, 2 wiring terminals at the other end are a total positive terminal and a total negative terminal of the battery PACK, and a 4-12-in-series (4P12S) circuit is formed after the assembly is finished;

5. after the signal sampling circuit is connected to the bolts on the aluminum row, the signal sampling circuit is orderly arranged in the wiring grooves at the two sides or the middle of the cover plate;

6. the positive terminal, the negative terminal and the signal terminal of the battery PACK are fixed, the cover plate of the box body is covered, the box body and the cover plate of the box body are fastened through bolts, and the single PACK is assembled.

The above description is only exemplary embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery, comprising:

a battery body (1) comprising a plurality of cells (12);

the two first wiring terminals (2) are arranged on the same end face of the battery body (1) and are connected with the plurality of battery cells (12), and the two first wiring terminals (2) are both positive wiring terminals or both negative wiring terminals; and

the shape of the end face, provided with the first wiring terminals (2), of the battery body (1) is a rectangle, and the angles of the two first wiring terminals (2) spaced in the circumferential direction of the center of the rectangle are 150-210 degrees.

2. The battery according to claim 1, wherein the two first connection terminals (2) are spaced at an angle of 170 ° to 200 ° in the circumferential direction of the center of the rectangle.

3. The battery according to claim 1, wherein the two first connection terminals (2) are spaced at an angle of 180 ° in the circumferential direction of the center of the rectangle.

4. The battery according to claim 1, further comprising two second connection terminals (3) provided on the same end face of the battery body (1) as the first connection terminal (2), the two second connection terminals (3) being spaced apart at an angle of 150 ° to 210 ° in the circumferential direction of the center of the rectangle.

5. The battery according to claim 1, wherein the first connection terminal (2) is provided at a top end of the battery body (1).

6. The battery according to claim 1, characterized in that the battery body (1) comprises a plurality of battery cells (12) arranged side by side and a heat dissipation air duct (15) between two adjacent battery cells (12).

7. The battery according to claim 6, wherein a plurality of the battery cells (12) are arranged in rows and columns, and the heat dissipation duct (15) is formed between two adjacent rows and/or two adjacent columns of the battery cells (12).

8. The battery of claim 1, further comprising:

the signal acquisition circuit is connected with the battery body (1);

and the wiring groove is arranged on the end face, provided with the first wiring terminal (2), of the battery body (1) and used for arranging the signal acquisition circuit in the wiring groove.

9. The battery according to claim 8, characterized in that the battery body (1) comprises a plurality of battery cells (12) arranged side by side along a first direction, the tabs of the plurality of battery cells (12) are connected by a conductive connecting member (16) extending along the first direction, and the wiring groove comprises a first wiring groove arranged at one side of a row of the tabs connected with the conductive connecting member (16).

10. The battery according to claim 1, wherein the battery body (1) further comprises a base (11) for carrying the battery core (12), and the base (11) is provided with a positioning groove for placing the battery core (12).

11. A battery pack, comprising:

a box body;

a plurality of the batteries of any one of claims 1 to 10 arranged side-by-side in the case.

12. The battery pack according to claim 11, wherein a vent hole is provided on a side wall of one or both ends of the case in a width direction thereof.

13. The battery pack according to claim 12, wherein the vent hole is communicated with a heat dissipation air duct (15) between two adjacent cells (12) of the battery.

14. The battery pack according to claim 11, wherein the connection terminals of a plurality of the cells arranged side by side are connected in sequence.