CN201054369Y

CN201054369Y - A battery pole board for battery pack

Info

Publication number: CN201054369Y
Application number: CNU2007201758534U
Authority: CN
Inventors: 王晏; 方平福; 王为希
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-13
Filing date: 2007-09-13
Publication date: 2008-04-30
Anticipated expiration: 2017-09-13

Abstract

The utility model relates to a battery plate electrode used for a battery bag. The battery plate electrode is composed of a conductive metal plate. The battery plate electrode is characterized in that a plurality of tabs are arranged on the battery plate electrode, and each tab is used for welding the anode terminal or the cathode terminal of the battery. The conductive metal plate is a copper plate, or a compound metal plate, or a nickel/copper/technical stainless steel compound plate.

Description

A kind of battery pack battery pole plates

(1) technical field

The utility model relates to a kind of battery pack battery pole plates.

(2) background technology

At present, domestic electric motor car generally adopts and can not realize that the above battery of the big capacity 50～100A of the LiMn2O4 of producing in batches carries out also, series connection, thereby the mode that forms the electrokinetic cell bag is the vehicle power supply, in safety, reliably, durable and level of informatization aspect control system all can not satisfy the basic need of urban public transport, especially its coefficient of safety is compared to lack effectively than LiFePO 4 high power capacity cell and is ensured, but for cylindrical LiFePO 4 high power capacity cell bag, the pole plates used material often material with battery electrode (male or female) is different, cause between unlike material to be electrically connected badly, influenced useful life of power brick.

In view of the above problems, the spy proposes a kind of pole plate of battery pack, LiFePO 4 high power capacity cell is used for the electrokinetic cell bag of electric motor car.

(3) utility model content

The purpose of this utility model provides a kind of battery pack electrode pad that is made of composite material, to realize good being connected between pole plate and the battery;

Another purpose of the present utility model provides a kind of pole plate that has two tongue lugs, and this pair tongue lug is to be made and be welded on the pole plate by composite material folding or bending, or a kind of pole plate of the two tongue lugs that punch out is provided.

Another purpose of the present utility model provides a kind of pole plate that has the two tongue lugs that can realize the two point welding.

Be achieved through the following technical solutions above-mentioned purpose:

A kind of battery pack battery pole plates, this battery pole plates is made of conductive metal sheet, have a plurality of lugs on the battery pole plates, each lug all be used to weld the anode tap of battery or cathode terminal (be each lug all with the anode tap of battery or cathode terminal by being welded to connect), described lug is two tongue lugs, single tongue lug or dovetail type lug.

Described lug one end is to guarantee that the mode of welding between the identical material is welded on the pole plate after folding, and the other end is welded on the negative electrode or anode of battery.Described lug adopts composite board to make.

Described lug is integrated with pole plate; Described lug is by the die-cut two tongue lugs that form of pole plate, welds the male or female of battery at the place, tip of two tongue lugs; The position of lug is corresponding with the electrode of battery in the pole plate.

Described lug one end is to guarantee that the mode of welding between the identical material is welded on the pole plate after folding, and the other end is welded on the negative electrode or anode of battery.

Described conductive metal sheet is copper coin or adopts clad metal sheet.Described clad metal sheet is the stainless composite board of nickel/copper/technology.

Described lug is integrated with pole plate, intends having the welding job point on the welding position at lug.

Described lug is by the die-cut two tongue lugs that form of pole plate, welds the male or female of battery at the place, tip of two tongue lugs.The position of lug is corresponding with the electrode of battery in the pole plate.

Can expand according to vehicle-mounted space ampere/hour effective parallel connection, adapt to the automobile improvement of different model and purposes.The design of lug/pole plate one realizes the maximization of cell efficient, the current flow path equalization of the cell after the assurance parallel connection, and the ingenious Welding Problems of having avoided between the unlike material.Realize that (5C is the multiplying power that discharges and recharges to 5C, 5C is exactly the electric weight that charges and discharge of five times of battery self rated capacities) discharge and recharge, can be full of in 15 minutes, life-span can reach 1700 times, 80%DOD (DOD is the load capacity of battery), fundamentally solve the contradiction between cost performance and safety durable, solved the technological difficulties problem that the world is managing to solve with the provisional capital.

(4) description of drawings

Fig. 1 is the sectional view that is connected with the pole plate of battery;

Fig. 2 a is a kind of pole plate that has two tongue lugs;

Fig. 2 b is the pole plate that another kind has two tongue lugs;

Fig. 2 c is the pole plate that has lug;

Fig. 3 is first embodiment that pole plate connects lug;

Fig. 4 is second embodiment that pole plate connects lug;

Fig. 5 is the 3rd embodiment that pole plate connects lug.

(5) embodiment

Domestic electric motor car generally adopts and can not realize that the above battery of the big capacity 50～100A of the LiMn2O4 of producing in batches carries out and connects, at the basic need that can not satisfy urban public transport aspect the level of informatization of safety, reliable, durable and control system.When adopting the higher LiFePO 4 high power capacity cell of coefficient of safety, being electrically connected the useful life that tends to influence battery between pole plate and battery proposes a kind of brand-new pole plate for battery pack for this reason.

A kind of battery pack battery pole plates, this battery pole plates is made of conductive metal sheet, it is characterized in that: have a plurality of lugs on the battery pole plates, each lug all is used to weld the anode tap or the cathode terminal of battery.Described conductive metal sheet is a copper coin; Described conductive metal sheet adopts clad metal sheet; Described clad metal sheet is the stainless composite board of nickel/copper/technology.

Described lug is integrated with pole plate; Described lug is by the die-cut two tongue lugs that form of pole plate, welds the male or female of battery at the place, tip of two tongue lugs; The position of each lug is corresponding with the electrode of battery in the pole plate.

As shown in fig. 1, the inside of this electrokinetic cell bag is to be made of plate 1, cathode plate 2 and the lug 3 that is welded on the pole plate, be contained with a plurality of batteries 4 between plate 1 and cathode plate 2, it is chargeable dry cell that this battery 4 can adopt cylindrical LiFePO 4 high power capacity cell.Plate 1, cathode plate 2 and lug 3 all are to adopt copper coin, copper/aluminum composite plate or the stainless composite board of nickel/copper/technology to make, and also can adopt the design of lug 3 and

pole plate

1,2 one, realize the maximization of cell efficient.

As shown in fig. 1, wherein the terminals of the plate 1 of battery 4 are drawn from the left side (left side of accompanying drawing paper) of plate 1, and the terminals of the cathode plate 2 of battery 4 are drawn from the right side (right side of accompanying drawing paper) of cathode plate 2, like this for the flow through pole plate of same distance of each battery 4 its electric current wherein, the current flow path equalization of the cell after the assurance parallel connection, thereby balanced each battery 4 that uses.

Design to lug 3 has been shown among Fig. 1 and Fig. 2 a-2c.In Fig. 1 and Fig. 2 a-2b, the Kong Yiduan that lug 3 passes on the

pole plate

1,2 is welded on the

pole plate

1,2, and the other end is welded on the battery 4.Material therefor is copper coin, copper/aluminum composite plate, nickel/copper/conductive plates such as technology stainless steel composite plate in lug 3 and the design of

pole plate

1,2 one, adopt folding in the welding or the bending processing, make the corresponding separately required material of both positive and negative polarity, thereby realize with the welding between the material, just can guarantee firmness with the spot welding of quality storeroom, solve the problem of welding between unlike material dexterously, made this power brick satisfy the use needs of city bus fully.So just can guarantee that described lug 3 is to be welded on plate 1 and/or the cathode plate 2 after folding, and guarantees with welding between the material.

Certainly, described lug 3 is also can adopt integrated mode with plate 1 and cathode plate 2.As shown in Fig. 2 a-2b, lug wherein is two tongue lugs 6, the production method of this lug is to punch out a plurality of holes 5 on

pole plate

1,2, and in hole 5, reserve two tongue lugs 6, lug wherein is two tongue lugs, single tongue lug or dovetail type lug, and the production method of this lug is to punch out a plurality of holes 5 on

pole plate

1,2, and reserves two tongue lugs 6 or single tongue lug 6, free end at two tongue lugs is that front end forms two ligule ends, and these two ligule ends are used to weld battery electrode.Free end at two tongue lugs 6 is that front end forms two ligule ends, and these two ligule ends are used to be welded to battery electrode.

See Fig. 3-5, show several different bending mode of lug 3 respectively.In Fig. 3, the pole plate that adopted 1,2 is composite plate, and lug 3 also is to adopt that composite plate is folding to form, and realizes connection or welding between the identical material like this when guaranteeing that lug 3 is connected or welded on

pole plate

1,2 and the battery 4 respectively.In Fig. 3, the anode of battery 4 and cathode side lug 3 all are to adopt folding mode, and are welded on the

pole plate

1,2; Then be to adopt flat folding and foldingly be welded on plate 1 and/or the cathode plate 2 after combined in Fig. 4 and Fig. 5, and guarantee with the welding between the material.

The design of this pole plate be achieved its overall dimensions with fixed than being designed to the basic standard module, connect the priming line of force according to the different demands of different vehicle from X, Y, three directions of Z, guarantee can utilize maximum load in the space at vehicle.Invention be electrokinetic cell in practical field ' flex point ' though with prior art continuously but can not lead.

Above listed a series of detailed description only is specifying at feasibility embodiment of the present utility model, but this embodiment is not in order to limit claim of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention is done, for example, equivalence embodiment Deng changing all should be contained within the claim of this case.

Claims

1. battery pack battery pole plates, this battery pole plates is made of conductive metal sheet, it is characterized in that: have a plurality of lugs on the battery pole plates, each lug all is connected by welding with the anode tap or the cathode terminal of battery, and described lug is two tongue lugs, single tongue lug or dovetail type lug.

2. battery pack battery pole plates according to claim 1 is characterized in that: described conductive metal sheet is a copper coin.

3. battery pack battery pole plates according to claim 1 is characterized in that: described conductive metal sheet adopts clad metal sheet.

4. battery pack battery pole plates according to claim 3 is characterized in that: described clad metal sheet is the stainless composite board of nickel/copper/technology.

5. according to battery pack battery pole plates any among the claim 1-4, it is characterized in that: described lug one end is to guarantee that the mode of welding between the identical material is welded on the pole plate after folding, and the other end is welded on the negative electrode or anode of battery.

6. according to the battery pack battery pole plates described in the claim 5, it is characterized in that: described lug adopts composite board to make.

7. according to battery pack battery pole plates any among the claim 1-4, it is characterized in that: described lug is integrated with pole plate, intends having the welding job point on the welding position at lug.

8. according to the battery pack battery pole plates described in the claim 7, it is characterized in that: described lug is by the die-cut two tongue lugs that form of pole plate, welds the male or female of battery at the place, tip of two tongue lugs.

9. according to claim 6 or 8 described battery pack battery pole plates, it is characterized in that: the position of lug is corresponding with the electrode of battery in the pole plate.