CN212323155U

CN212323155U - Tab of stacked battery

Info

Publication number: CN212323155U
Application number: CN202021058287.0U
Authority: CN
Inventors: 何可立; 何幸华
Original assignee: Zhaoqing Zhongteneng Technology Investment Co ltd
Current assignee: Zhaoqing Zhongteneng Technology Investment Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-01-08
Anticipated expiration: 2030-06-10

Abstract

The utility model provides a pole ear of a stacked battery, which is fixed on a battery body through a first pressing plate and a second pressing plate; meanwhile, a bus bar is arranged between the first pressing plate and the electrode plate, a third pressing plate is arranged between the second pressing plate and the clamping plate, and the third pressing plate and the bus bar are connected into a whole; thereby, the stacked battery can enhance the connection strength during the use process; furthermore, as the charging and discharging channel between the traditional bus bar and the lug is smaller, the situation that the lug is corroded due to overlarge current in the charging and discharging process is easily caused, so that the battery is damaged and cannot be used; realize utmost point ear can increase the electric current conduction sectional area at the charge-discharge in-process through the third clamp plate and the busbar that set up, realize battery body can bear bigger electric current at the in-process that carries out charge-discharge, reduces because of the too big circumstances that causes battery utmost point ear damage of electric current to the reduction causes the condemned circumstances of battery because of the electric current is too big.

Description

Tab of stacked battery

Technical Field

The utility model relates to a pile up battery technical field, in particular to utmost point ear of heap battery.

Background

At present, power battery mainly takes the mode of piling up as the owner, in process of production, because the plate electrode is for piling up out in proper order, therefore its overall structure nature is relatively poor, mainly leans on outer frame or shell to fix it to make it become a whole, but in the use, often neglected the electric current of utmost point ear and switched on the cross section, make current utmost point ear when meetting the heavy current and passing through, very easily cause the higher and burnt utmost point ear of temperature because of the electric current is too big, cause the condition of battery damage even.

SUMMERY OF THE UTILITY MODEL

The utility model provides a utmost point ear of heap battery for improve the electric current bearing capacity of utmost point ear, realize under the circumstances of heavy current, utmost point ear still can normally work, reduces the circumstances that causes utmost point ear or even battery damage because of high temperature under the heavy current circumstances.

The utility model provides a utmost point ear of heap battery, include: the battery comprises a lug and a lug support, wherein the lug is symmetrically arranged at an electrode end of the battery body through the lug support; the tab support is of an L structure and comprises a first pressing plate and a second pressing plate, one surface of the first pressing plate is used for connecting an electrode end of the battery body, and the other surface of the first pressing plate is used for connecting the tab; the second pressing plates are symmetrically arranged on two sides of the battery body.

Preferably, one side of the lug support, which is close to the battery body, is provided with a clamping plate, and the clamping plate is used for fixing the battery body and the lug support into a whole.

Preferably, a third pressing plate is arranged between the clamping plate and the second pressing plate, and the third pressing plate and the tab support are both made of conductive materials.

Preferably, a bus bar is arranged on one surface of the first pressing plate close to the electrode, and the bus bar is symmetrically arranged on two sides of the first pressing plate in a triangular structure; and one side of the busbar close to the second pressing plate is connected with the third pressing plate.

Preferably, the lug support is provided with a mounting hole for mounting on the battery body, an external support is arranged on the outer side of the battery body, a screw hole for mounting the mounting hole is formed in the external support in a matched mode, and the screw hole and the mounting hole are fixed into a whole through a screw.

Preferably, an electrode plate is arranged at an electrode end of the battery body, and the electrode plate is used for connecting the positive electrode and the negative electrode of the battery body with the electrode lug.

Preferably, the first pressing plate is close to one surface of the tab, and a tab screw hole is formed in one surface of the tab, and the tab screw hole is used for detachably connecting the tab to the first pressing plate.

Preferably, one surface of the first pressing plate, which is close to the electrode plate, is provided with a limiting column with a conical structure, one end of the limiting column, which has a large diameter, is connected with the lower surface of the first pressing plate, one surface of the electrode plate, which is close to the first pressing plate, is provided with a limiting groove, and the limiting groove is used for inserting one end of the limiting column, which has a small diameter; a first spring is arranged at the bottom of the limiting groove, the other end of the first spring is connected with a contact plate, and one surface, far away from the first spring, of the contact plate is used for contacting one surface, with a small diameter, of the limiting column; the circumference outer wall of spacing post is equipped with loop configuration's draw-in groove, the axial inner wall interval of spacing groove is equipped with a plurality of movable grooves, the groove opening orientation of movable groove the spacing inslot portion, the tank bottom portion of movable groove is equipped with the second spring, the other end of second spring is connected with the fore-set, the fore-set is kept away from the one end of second spring is established to hemisphere structure, the hemisphere structure of fore-set be used for with the draw-in groove is mutually supported.

Preferably, the tab support and the third pressing plate are cast-welded into a whole.

The utility model has the advantages as follows:

In addition, the tab, the first pressing plate, the second pressing plate and the third pressing plate are all cast-welded into a whole, so that the connection stability of the tab and the tab support is improved in the using process; the tabs can be set into large tabs and small tabs as required, the large tabs are formed by a plurality of electrode plates in a cast welding mode and are connected with terminals of the battery, so that the secondary fixing condition is reduced; the small tabs are also provided with a plurality of small tabs, and the small tabs are connected into a whole through cast welding; through the cast-weld connection mode, the condition of empty welding, insufficient welding or false welding can not occur in the battery conducting process, so that the condition that electric arcs can not be generated when current conducts the pole lugs in the battery working process is reduced, and the safety of the battery in the using process is improved; the connection between the integral lug and the battery body can be improved to be firmer and firmer through the cast-weld connection mode, and the condition that the battery cannot be normally used due to the virtual connection of the lug in the use process is reduced; when the novel battery pole lug is used, if the pole lug part passes through large current, the conductivity and the heat conductivity can be improved, the resistance of the pole lug is reduced, and faster and more effective charging and discharging work is realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a schematic view of the connection structure between the electrode plate and the first pressing plate of the present invention;

fig. 4 is a schematic view of the structure of the small tab of the present invention;

the battery comprises a battery body, a first pressing plate, a second pressing plate, a third pressing plate, a 4-busbar, a 5-battery body, a 6-lug, a 7-clamping plate, an 8-electrode plate, a 9-lug screw hole, a 10-limiting column, a 11-limiting groove, a 12-contact plate, a 13-first spring, a 14-mounting hole, a 15-movable groove, a 16-top column, a 17-second spring, an 18-clamping groove, a 19-screw and a 20-convex block.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

According to fig. 1 and fig. 2, the embodiment of the present invention provides a tab of stacked battery, including: the battery comprises a tab 6 and a tab support, wherein the tab 6 is symmetrically arranged at the electrode end of the battery body 5 through the tab support; the tab support is of an L structure and comprises a first pressing plate 1 and a second pressing plate 2, one surface of the first pressing plate 1 is used for connecting an electrode end of the battery body 5, and the other surface of the first pressing plate is used for connecting the tab 6; the second pressing plates 2 are symmetrically arranged on two sides of the battery body 5.

The utility model provides a pole ear of a stacked battery, which is fixed on a battery body through a first pressing plate and a second pressing plate; meanwhile, a bus bar is arranged between the first pressing plate and the electrode plate, a third pressing plate is arranged between the second pressing plate and the clamping plate, and the third pressing plate and the bus bar are connected into a whole; thereby, the stacked battery can enhance the connection strength during the use process; furthermore, as the charging and discharging channel between the traditional bus bar and the lug is smaller, the situation that the lug is corroded due to overlarge current in the charging and discharging process is easily caused, so that the battery is damaged and cannot be used; realize utmost point ear can increase area of contact through the third clamp plate that sets up and busbar in charge-discharge process, realize battery body can bear bigger electric current at the in-process that carries out charge-discharge, reduces because of the too big condition that causes battery utmost point ear damage of electric current to the reduction causes the condemned condition of battery because of the electric current is too big.

According to the illustration in fig. 1-2, a clamping plate 7 is arranged on one side of the tab support close to the battery body 5, and the clamping plate 7 is used for fixing the battery body 5 and the tab support into a whole. The clamping plate can improve the connection strength between the battery body and the lug support, and reduce the situation that the lug support and the lug fall off in the use process due to the insecure connection between the lug support and the battery body, thereby improving the service life and the service strength of the stacked battery.

According to the illustration of fig. 1-2, a third pressing plate 3 is arranged between the clamping plate 7 and the second pressing plate 2, and the third pressing plate 3 and the tab support are both made of conductive materials. The third pressing plate and the lug support are preferably made of one or more combined materials of nickel, lead, tin, copper, gold or silver materials, so that the conductivity of the third pressing plate and the lug support is realized, for example, the nickel or silver alloy material is plated on the outer surface of nickel or silver or copper, so that the lug, the third pressing plate and the bus bar can bear larger current in the charging and discharging process, the situation that the lug is burnt out due to overlarge instantaneous current is reduced, and the service life of the battery is prolonged.

According to the illustration in fig. 1-2, a bus bar 4 is arranged on one surface of the first pressing plate 1 close to the electrode, and the bus bar 4 is symmetrically arranged on two sides of the first pressing plate 1 in a triangular structure; the side of the busbar 4 close to the second press plate 2 is connected with the third press plate 3. An electrode plate 8 is arranged at the electrode end of the battery body 5, and the electrode plate 8 is used for connecting the positive electrode and the negative electrode of the battery body 5 with the electrode lug 6. The bus bar and the electrode plate are used for connecting the positive electrode and the negative electrode of the battery body with the tabs through the tab support, so that the tabs can be charged and discharged more reliably and firmly in the use process.

In addition, the tab, the first pressing plate, the second pressing plate and the third pressing plate are all cast-welded into a whole, so that the connection stability of the tab and the tab support is improved in the using process; the tabs can be arranged into a big tab and a small tab according to requirements,

according to the figure 1, the big pole lug is used in the application occasion of high power current, the big pole lug is formed by a plurality of electrode plates in a cast welding mode, and the big pole lug is connected with the terminal of the battery, so that the condition of secondary fixation is reduced; through the cast-weld connection mode, the condition of empty welding, cold welding or false welding can not occur in the battery conducting process, the purpose that no gap can occur at the connection part is achieved, and the connected parts can realize that metals are fused into a whole; therefore, the situation that electric arcs cannot be generated when the current conducts the lug in the working process of the battery is reduced, and the safety of the battery in the using process is improved; the connection between the integral lug and the battery body can be improved to be firmer and firmer through the cast-weld connection mode, and the condition that the battery cannot be normally used due to the virtual connection of the lug in the use process is reduced; when the novel battery pole lug is used, if the pole lug part passes through large current, the conductivity and the heat conductivity can be improved, the resistance of the pole lug is reduced, and faster and more effective charging and discharging work is realized.

According to the illustration of fig. 4, the small tab is used in applications with low current; the small tabs are provided with two groups, wherein one group is a positive electrode, and the other group is a negative electrode; little utmost point ear includes first clamp plate 1, second clamp plate 2 and protruding piece 20, first clamp plate 1 with second clamp plate 2 interconnect is the L structure, second clamp plate 2 is fixed on splint 7, first clamp plate 1 is fixed respectively on the anodal and the negative pole of battery body, first clamp plate 1 keeps away from one end upper surface of second clamp plate 2 is equipped with protruding piece 20, protruding piece with be equipped with the utmost point ear 6 that is used for connecting binding post on the first clamp plate 1. The dead weight of the battery can be reduced by using the small tab in the application occasion of small current; because the small tabs are connected into a whole by cast welding, the small tabs can also ensure that the battery can carry out stable and safe charging and discharging work in the use process.

According to the illustration of fig. 1-2, the tab support is provided with a mounting hole 14 for mounting on the battery body 5, an external support is provided on the outer side of the battery body 5, the external support is provided with a screw hole for mounting in cooperation with the mounting hole 14, and the screw hole and the mounting hole 14 fix the external support and the tab support into a whole through a screw 19. The bolt can install the utmost point ear support in the outside of battery body, fixes the group battery according to the outside support, further utilizes utmost point ear support and third clamp plate to fix the battery body after that, has improved the firmness of heap battery in the use greatly from this.

According to the illustration in fig. 1-3, one surface of the first pressing plate 1 close to the tab 6 is provided with a tab screw hole 9, and the tab screw hole 9 is used for detachably connecting the tab 6 with the first pressing plate 1. Utmost point ear is established to the screw structure, utmost point ear screw can enough make utmost point ear detachable connect utmost point ear support can also realize utmost point ear support and utmost point ear utilize when carrying out charge-discharge the screw structure of utmost point ear compresses tightly the electrode slice of charge-discharge for utmost point ear can work as an organic whole with the fine connection of the electrode slice of charge-discharge when carrying out charge-discharge.

According to the illustration in fig. 1-3, a limiting column 10 with a conical structure is arranged on one surface of the first pressing plate 1 close to the electrode plate 8, the end with the larger diameter of the limiting column 10 is connected with the lower surface of the first pressing plate 1, a limiting groove 11 is arranged on one surface of the electrode plate 8 close to the first pressing plate 1, and the limiting groove 11 is used for inserting the end with the smaller diameter of the limiting column 10; a first spring 13 is arranged at the bottom of the limiting groove 11, the other end of the first spring 13 is connected with a contact plate 12, and one surface, far away from the first spring 13, of the contact plate 12 is used for contacting one surface, with a small diameter, of the limiting column 10; the circumference outer wall of spacing post 10 is equipped with loop configuration's draw-in groove 18, the axial inner wall interval of spacing groove 11 is equipped with a plurality of movable grooves 15, the groove opening orientation of movable groove 15 inside the spacing groove 11, the tank bottom portion of movable groove 15 is equipped with second spring 17, the other end of second spring 17 is connected with fore-set 16, the fore-set 16 is kept away from second spring 17's one end is established to hemisphere structure, the hemisphere structure of fore-set 16 be used for with draw-in groove 18 mutually supports.

In the using process, due to carrying or collision, the inside of the battery body is loosened, so that the condition of poor contact between the electrode plate and the tab support is easily caused, and the virtual connection condition of the battery pack during charging and discharging is influenced;

therefore, the purpose of conducting electricity between the electrode lug and the electrode plate can be realized after the small-diameter end of the limiting column is contacted with the contact plate;

under the action of the first spring in the limiting groove, when the electrode plate and the battery body are connected into a whole through the screw by the electrode lug support, the bottom surface of the electrode lug support can be contacted with the upper surface of the electrode plate, and the lower surface of the electrode plate is contacted with a motor of the battery pack, so that the purpose of pressing and fixing the electrode lug support into a whole is achieved;

furthermore, the contact plate is always jacked upwards by the elastic force of the first spring, so that the limiting column can always be in good contact with the electrode plate; therefore, the situations of loosening and the like between the tab support and the electrode plate caused by over-long use or collision are reduced, the situation of poor contact of the tab caused by the loosening situation is further reduced, and the connection reliability of the electrode plate and the tab is greatly improved.

In addition, the top columns arranged on the inner wall of the limiting groove at intervals can be matched with the clamping grooves formed in the circumferential outer wall of the limiting column, so that the top columns can be buckled with the clamping grooves, the situation that the limiting column is separated from the limiting groove is reduced, the limiting column is in a conical structure, when the limiting column is inserted towards the limiting groove, the top columns can be gradually pushed into the movable groove by the outer wall of the conical structure, when the lower surface of the first pressing plate is in contact with the upper surface of the electrode plate and the lower surface of the electrode plate is in contact with the positive electrode and the negative electrode of the battery pack, the clamping grooves also reach the positions of the movable groove and the top columns, the top columns are pushed out by the second springs, and the top columns are clamped in the clamping grooves; the second spring also establishes to conducting material with the fore-set, realizes the fore-set can with spacing post further conducts electricity and blocks the purpose of establishing, can improve from this the firm in connection degree of plate electrode and utmost point ear support can also improve both in the stability of carrying out the charge-discharge in-process, reduces the circumstances because of the virtual circumstances that causes the charge-discharge to become invalid that connects.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A tab for a stacked battery, comprising: the battery comprises tabs (6) and tab supports, wherein the tabs (6) are symmetrically arranged at the electrode ends of the battery body (5) through the tab supports; the tab support is of an L structure and comprises a first pressing plate (1) and a second pressing plate (2), one surface of the first pressing plate (1) is used for being connected with an electrode end of the battery body (5), and the other surface of the first pressing plate is used for being connected with the tab (6); the second pressing plates (2) are symmetrically arranged on two sides of the battery body (5).

2. A tab for a stacked battery as claimed in claim 1, wherein a clamping plate (7) is provided at a side of the tab holder adjacent to the battery body (5), the clamping plate (7) being used to fix the battery body (5) and the tab holder as a whole.

3. A tab for a stacked battery as claimed in claim 2, wherein a third pressing plate (3) is provided between the clamping plate (7) and the second pressing plate (2), and the third pressing plate (3) and the tab holder are made of an electrically conductive material.

4. A tab for a stacked battery as claimed in claim 3, wherein the first pressing plate (1) is provided with bus bars (4) on one side thereof adjacent to the electrode, the bus bars (4) being symmetrically arranged on both sides of the first pressing plate (1) in a triangular structure; one side of the busbar (4) close to the second pressing plate (2) is connected with the third pressing plate (3).

5. The tab of stacked battery as claimed in claim 1, wherein the tab holder is provided with a mounting hole (14) for mounting to the battery body (5), an external holder is provided on the outside of the battery body (5), the external holder is provided with a screw hole for fitting the mounting hole (14), and the screw hole and the mounting hole (14) are fixed together by a screw (19).

6. The tab of a stacked battery as claimed in claim 1, wherein the electrode terminal of the battery body (5) is provided with an electrode plate (8), and the electrode plate (8) is used for connecting the positive and negative electrodes of the battery body (5) with the tab (6).

7. The tab of a stacked battery as claimed in claim 1, wherein a tab screw hole (9) is formed in a surface of the first pressing plate (1) adjacent to the tab (6), and the tab screw hole (9) is used for detachably connecting the tab (6) to the first pressing plate (1).

8. The tab of stacked battery as claimed in claim 6, wherein the first pressing plate (1) is provided with a position-limiting post (10) having a conical structure on one side thereof near the electrode plate (8), the end of the position-limiting post (10) with a larger diameter is connected to the lower surface of the first pressing plate (1),

one surface of the electrode plate (8) close to the first pressing plate (1) is provided with a limiting groove (11), and the limiting groove (11) is used for inserting one end of the limiting column (10) with a small diameter;

a first spring (13) is arranged at the bottom of the limiting groove (11), the other end of the first spring (13) is connected with a contact plate (12), and one surface, far away from the first spring (13), of the contact plate (12) is used for contacting one surface, with a small diameter, of the limiting column (10);

the circumference outer wall of spacing post (10) is equipped with draw-in groove (18) of loop configuration, the axial inner wall interval of spacing groove (11) is equipped with a plurality of movable grooves (15), the groove opening orientation of movable groove (15) spacing groove (11) are inside, the tank bottom portion of movable groove (15) is equipped with second spring (17), the other end of second spring (17) is connected with fore-set (16), the fore-set (16) are kept away from the one end of second spring (17) is established to hemisphere structure, the hemisphere structure of fore-set (16) be used for with draw-in groove (18) mutually support.

9. A tab for a stacked battery as claimed in claim 4, wherein said tab (6), tab holder and said third presser plate (3) are cast-welded as one body.