CN203690394U

CN203690394U - Output structure of lithium battery pack

Info

Publication number: CN203690394U
Application number: CN201420060272.6U
Authority: CN
Inventors: 陈越鹏
Original assignee: Ningbo Hui Kang New Energy Technology Co Ltd
Current assignee: Ningbo Hui Kang New Energy Technology Co Ltd
Priority date: 2014-01-26
Filing date: 2014-01-26
Publication date: 2014-07-02
Anticipated expiration: 2024-01-26

Abstract

The utility model discloses an output structure of a lithium battery pack. The output structure comprises electrodes of the lithium battery pack, an insulating plate and an output end, wherein the sheet electrodes respectively extend out of a lithium battery body, the insulating plate is of an insulating plate body structure and is provided with slots penetrating through a plate body, the electrodes of lithium batteries penetrate through the slots to be bent, a bending surface tightly connects the insulating plate and the lithium battery pack, the insulating plate is also provided with a connecting part for serially connecting the electrodes of all the lithium batteries of the lithium battery pack on the surface facing the bending surfaces of the electrodes, the connecting part is of a conductor sheet structure, and is fit with the bending surfaces of the electrodes to be integrated through spot welding; one end of a conductive pole of the output end is of a sheet structure and is positioned between the insulating plate and the lithium battery pack, the conductive pole and the connecting part are electrically connected by a bolt, and the conductive pole and the insulating plate are tightly connected by a bolt; a phenomenon that a lithium battery is damaged due to heat aggregation caused by a small electric connecting area is avoided through bending of the electrodes and fitting and spot welding connection of the electrodes and the connecting part; the operation of spot welding can be performed instantly, and an inside structure of the lithium battery cannot be damaged.

Description

A kind of export structure of lithium battery group

Technical field

The utility model relates to a kind of battery pack, particularly a kind of export structure of lithium battery group.

Background technology

Lithium battery need to meet by the form of battery pack the requirement of output voltage or electric current, the lithium battery of single-unit is difficult to meet the requirement of output voltage or electric current, and this just need to will offer outside power device use by the export structure that is connected to form battery pack by electric energy between lithium battery.

The export structure of existing lithium battery group comprise single-lithium-battery pond output use electrode, connect the connector of each single-lithium-battery pond electrode and the output being connected with connector, output is connected with outside power device; The shortcoming of the export structure of existing battery pack is: between electrode, connector is wire, directly be connected with the electrode of lithium battery by soldering, soldering need high-temperature process and the processing time long, easily cause the structural failure of lithium battery interior, simultaneously, the position of welding is wire termination, form the some connection status of connector and motor, the intensity and the conductivity that connect are poor, reduce the reliability that connector is connected with electrode, the poor heat energy that is prone in the time that battery is exported large electric current of conductivity is assembled, and causes battery temperature to rise rapidly, affects battery life; In addition, the tin of welding use is prone to oxidation and corrosion, must again repair or directly scrap once damage battery.

Utility model content

The utility model is in order to overcome defect in above-mentioned prior art, by changing the syndeton between electrode and between connector and electrode, the internal structure of guaranteeing battery is not subject to the impact of outside attended operation and keeps stable, and guarantees the outside connection reliability of lithium battery.

For realizing above-mentioned utility model object, the utility model provides a kind of export structure of lithium battery group, comprises electrode, insulation board and the output of lithium battery group; Electrode, is flake structure, certainly forms in each lithium battery body of lithium battery group and draws; Insulation board, for the plate body structure of insulation, be provided with the interpolation slit that connects plate body, the electrode of lithium battery is through bending after interpolation slit, the folding surface of electrode is fastenedly connected insulation board and lithium battery group, insulation board is also provided with the connector of each electrode of lithium cell in serial connection lithium battery group towards the surface of electrode folding surface, connector is conductor sheet structure, and to be affixed merga pass single or a plurality of with electrode folding surface spot weldingbe connected as a single entity, the connector place of corresponding two companies of two outputs that battery pack serial connection forms is also provided with the screw that connects insulation board; Output, comprise insulation interface and the conducting utmost point, insulation interface and outside power device mechanical connection, conducting utmost point one end is arranged in insulation interface and is electrically connected with outside power device, the other end of the conducting utmost point is the flake structure that forms of conductor between insulation board and lithium battery group, and thin slice is provided with the screw of perforation, and bolt passes screw and insulation board is fastenedly connected and the conducting utmost point and insulation board are fastenedly connected, the front end of bolt connects with corresponding connector, forms the electrical connection take bolt as conductor.

In technique scheme, the surface that insulation board connects conducting wafer thin is also provided with caulking groove, in caulking groove, set the auxiliary brace being made up of conductor, size and the conducting wafer thin size of auxiliary brace are suitable, further to improve the conductive effect after the connection of conducting wafer thin.

In technique scheme, insulation board is set in the caulking groove of auxiliary brace, at the also fastening nut being connected with bolt that is equipped with of the screw place of insulation board, the surface of nut is mutually concordant with the bottom surface of described auxiliary brace caulking groove, and nut makes bolt more reliable with being connected of insulation board.

In technique scheme, lithium battery is the narrow ladder-type structure of bottom wide upper portion very, the narrow part in top is passed the interpolation slit of insulation board, the interpolation slit length of insulation board and the top of electrode of lithium cell are suitable, the lower surface of insulation board is connected on two shoulders that electrode of lithium cell bottom protrudes from top, make insulation board and lithium battery group keep spacing, the conducting wafer thin being connected with insulation board and bolt interfere with lithium battery group, electrode in this spacing and not.

Compared with prior art, the utility model is by arranging insulation board and connector, and by the electrode of lithium battery group is realized and being firmly connected through spot welding through after fitting with the face of connector after insulation board bending, guarantee that the connection between electrode of lithium cell has enough joint faces, not can because of joint face not enough large electric current by time cause heat accumulation to damage lithium battery; The operation of spot welding simultaneously can complete in moment, can not damage lithium battery interior structure; The bolt being connected with insulation board by the thin slice of the conducting utmost point and by thin slice is arranged between insulation board and lithium battery group, can guarantee that the conducting utmost point and being connected of insulation board are not vulnerable to the impact of external force collision, connector one side that can guarantee insulation board in more smooth state simultaneously, be convenient to the packing of battery and fitly put, improving Transport Safety and efficiency.

Accompanying drawing explanation

Fig. 1 is the exploded perspective view of the export structure of a kind of lithium battery group of the utility model;

Fig. 2 is the stereogram after the assembling of export structure of a kind of lithium battery group of the utility model.

Mark the following drawings mark thereon by reference to the accompanying drawings:

1-lithium battery group, 2-electrode, 21-folding surface, 22-shoulder, 3-insulation board, 31-interpolation slit, 32-screw, 33-caulking groove, 34-nut, 35-wire caulking groove, 4-output, 41-interpolation slit, 42-thin slice, 421-screw, 43-wire, 5-connector, 51-assists brace, 6-bolt.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection range of the present utility model is not subject to the restriction of embodiment.

The export structure of a kind of lithium battery group of the present utility model, as shown in Figure 1, 2, comprises electrode 2, insulation board 3 and the output 4 of lithium battery group 1, electrode 2, is the conductor of flake structure, certainly forms in each lithium battery body of lithium battery group and draws, insulation board 3, for the plate body structure of insulation, be provided with the interpolation slit 31 that connects plate body, the electrode 2 of lithium battery is through bending after interpolation slit, the folding surface 21 of electrode 2 is fastenedly connected insulation board 3 and lithium battery group 1, insulation board 3 is also provided with the connector 5 of each electrode of lithium cell in serial connection lithium battery group towards the surface of electrode folding surface 21, connector 5 is conductor sheet structure, and to be affixed merga pass a plurality of with electrode folding surface 21 spot welding (also can use in some cases single spot welding to realize connects)be connected as a single entity, the connector place of corresponding two companies of two outputs that battery pack serial connection forms is also provided with the screw 32 that connects insulation board, output 4, comprise insulation interface 41 and the conducting utmost point, insulation interface 41 and outside power device mechanical connection, one end of the conducting utmost point is arranged at the interior (not shown) of insulation interface 41 and is electrically connected with outside power device, the other end of the conducting utmost point be conductor form thin slice 42 structures and between insulation board 3 and lithium battery group 1, the conducting utmost point is connected (also can directly use as required the slice conductor of one to form complete connection) by wire 43 between insulation one end of interface 41 inner sides and thin slice 42 one end, the surface of insulation board 3 corresponding lead 43 is also provided with wire caulking groove 35, wire 43 can not be interfered or push, in order to avoid harness damage, thin slice 42 is provided with the screw 421 of perforation, bolt 6 is fastenedly connected and the conducting utmost point and insulation board is fastenedly connected through screw 421 and insulation board 3, the front end of bolt 6 connects with corresponding connector 5, form the electrical connection take bolt 6 as conductor, connector 5 is communicated with the thin slice 42 of the conducting utmost point.

Further as shown in Figure 1, insulation board 3 connects in the surperficial caulking groove 33 of conducting wafer thin sets the auxiliary brace 51 being made up of conductor, size and conducting wafer thin 42 sizes of auxiliary brace 51 are suitable, further to improve the conductive effect after the connection of conducting wafer thin.

Further as shown in Figure 1, insulation board is set in the caulking groove 33 of auxiliary brace 51, at the also fastening nut 34 being connected with bolt 6 that is equipped with of screw 32 places of insulation board, the surface of nut 34 is mutually concordant with the bottom surface of described auxiliary brace caulking groove 33, and nut 34 makes bolt 6 more reliable with being connected of insulation board 3.

Further as shown in Figure 1, electrode of lithium cell 2 is the narrow ladder-type structure of bottom wide upper portion, the narrow part in top is passed the interpolation slit 31 of insulation board, interpolation slit 31 length of insulation board and the top of electrode of lithium cell 2 are suitable, the lower surface of insulation board is connected on two shoulders 22 that electrode of lithium cell bottom protrudes from top, make insulation board 3 and lithium battery group 1 keep spacing, the conducting wafer thin 42 being connected with insulation board 3 and bolt 6 interfere with lithium battery group 1, electrode 2 in this spacing and not.

The utility model is by arranging insulation board and connector, and by the electrode of lithium battery group is realized and being firmly connected through spot welding through after fitting with the face of connector after insulation board bending, guarantee that the connection between electrode of lithium cell has enough joint faces, not can because of joint face not enough large electric current by time cause heat accumulation to damage lithium battery; The operation of spot welding simultaneously can complete in moment, can not damage lithium battery interior structure; The bolt being connected with insulation board by the thin slice of the conducting utmost point and by thin slice is arranged between insulation board and lithium battery group, can guarantee that the conducting utmost point and being connected of insulation board are not vulnerable to the impact of external force collision, connector one side that can guarantee insulation board in more smooth state simultaneously, be convenient to the packing of battery and fitly put, improving Transport Safety and efficiency.

Disclosed is above only a specific embodiment of the present utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.

Claims

1. an export structure for lithium battery group, is characterized in that, comprises electrode, insulation board and the output of lithium battery group;

Electrode, is flake structure, certainly forms in each lithium battery body of lithium battery group and draws;

Insulation board, for the plate body structure of insulation, be provided with the interpolation slit that connects plate body, the electrode of lithium battery is through bending after interpolation slit, the folding surface of electrode is fastenedly connected insulation board and lithium battery group, insulation board is also provided with the connector of each electrode of lithium cell in serial connection lithium battery group towards the surface of electrode folding surface, connector is conductor sheet structure, be affixed merga pass spot welding with electrode folding surface and be connected as a single entity, the connector place of corresponding two companies of two outputs that battery pack serial connection forms is also provided with the screw that connects insulation board;

Output, comprise insulation interface and the conducting utmost point, insulation interface and outside power device mechanical connection, conducting utmost point one end is arranged in insulation interface and is electrically connected with outside power device, the other end of the conducting utmost point be conductor form flake structure and between insulation board and lithium battery group, thin slice is provided with the screw of perforation, bolt is fastenedly connected and the conducting utmost point and insulation board is fastenedly connected through the screw of screw and insulation board, the front end of bolt connects with corresponding connector, forms the electrical connection take bolt as conductor.

2. the export structure of a kind of lithium battery group according to claim 1, is characterized in that, the surface that described insulation board connects conducting wafer thin is equipped with the auxiliary brace that conductor forms, and size and the conducting wafer thin size of auxiliary brace are suitable.

3. the export structure of a kind of lithium battery group according to claim 2, it is characterized in that, described insulation board is set in the caulking groove of auxiliary brace, at the also fastening nut being connected with bolt that is equipped with of the screw place of insulation board, the surface of nut is mutually concordant with the bottom surface of described auxiliary brace caulking groove.

4. the export structure of a kind of lithium battery group according to claim 1, it is characterized in that, described lithium battery is the narrow ladder-type structure of bottom wide upper portion very, the narrow part in top is passed the interpolation slit of insulation board, the interpolation slit length of insulation board and the top of electrode of lithium cell are suitable, the lower surface of insulation board is connected to electrode of lithium cell bottom, and to protrude from two shoulders on top upper, insulation board and lithium battery group maintenance spacing.