CN211605262U

CN211605262U - Integrative collection structure of power battery temperature voltage

Info

Publication number: CN211605262U
Application number: CN201922206033.2U
Authority: CN
Inventors: 刘斌; 杜野; 李贵生; 许风祥; 吴菲
Original assignee: Wuxi Zhonghui Automobile Electronic Technology Co ltd
Current assignee: Wuxi Zhonghui Automobile Electronic Technology Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-09-29
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a temperature and voltage integrated acquisition structure of a power battery, which comprises a FPC board, an electric core and a copper-aluminum composite electrode, wherein the FPC board is electrically connected with the copper-aluminum composite electrode; the copper-aluminum composite electrode comprises a copper part and an aluminum part, and a tin material wrapping layer is arranged at the joint of the copper part and the aluminum part. The utility model adopts the copper-aluminum composite electrode to realize the aluminum-copper connection scheme with reliable performance and high production efficiency, thereby reducing the electrode cost and the weight; the FPC board has the characteristics of high assembly wiring density, small volume, light weight, thin thickness and good bending property, reduces the cost, is easy to install, can realize the integration of process automation and detection, has good performance in severe environment inside a power battery, resists corrosion and mechanical shock vibration, meets the requirements, and has high long-term stability.

Description

Integrative collection structure of power battery temperature voltage

Technical Field

The utility model relates to a power battery field especially relates to an integrative collection structure of power battery temperature voltage.

Background

The development of new energy automobiles is a focus point for various countries in the world to cope with climate change, energy conservation and emission reduction, and major automobile countries make schedules for forbidding production and sale of fuel automobiles. The new energy automobile becomes a common strategic choice of the major automobile strong country and major automobile enterprises in the world, and the new energy market is seized through layout. The power battery is the most core system of the new energy automobile, and the main function of the power battery is to realize the storage and release of electric energy through the mutual conversion of electric energy and chemical energy. The power battery generates heat when working, the internal temperature of the battery is overhigh due to the heat generation, the cycle life of the battery is influenced, and even the safety of the battery is damaged. The temperature and voltage acquisition is a core index in the work project of the power battery pack and is a key component for ensuring the safety and the reliability of the battery system.

Most power battery voltage and temperature acquisition all adopt traditional pencil crimping OT terminal at present, reuse screwed connection is to the structure of electric core utmost point ear, specifically, current power battery voltage and temperature acquisition pencil primary structure include voltage acquisition OT terminal, temperature acquisition OT terminal and copper bar, voltage acquisition OT terminal passes through the bolt and links together with the copper bar, realize voltage signal collection, temperature acquisition OT terminal passes through the bolt and links together with the copper bar, realize temperature signal acquisition, the voltage temperature acquisition is accomplished to the synthetic pencil of gathering at last. Gather the pencil design according to the battery package module PACK box structure, in the box module distribute, module self structure and gather on the basis that the point was arranged, so need do a large amount of line length estimation and statistics work earlier stage, not only consume staff's energy but also make mistakes very easily. Meanwhile, the loop-sleeving wire nose terminal is fixed on the electric core pole through a bolt, and when the electric core pole is pulled by external force, the collection wire and the loop-sleeving wire nose terminal are easy to break. And the steps of collecting the wire harness are very complicated and complex during the assembly of the production line, and the error is easy to occur, so the assembly efficiency is low, and the automation is not easy to realize.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the structure is complex and the appearance is irregular; the whole assembly efficiency is low, and the labor cost is high; the overall price of the wiring harness is high due to the temperature-sensitive type.

Aiming at the defects and shortcomings of the prior art, the temperature and voltage integrated acquisition structure of the power battery comprises an FPC board, a battery cell and a copper-aluminum composite electrode, wherein the FPC board is electrically connected with the copper-aluminum composite electrode; the copper-aluminum composite electrode comprises an anode copper-aluminum composite bar and a cathode copper-aluminum composite bar; the battery also comprises two aluminum bars connected with the battery cell, and the two aluminum bars are respectively connected with the positive copper-aluminum composite bar and the negative copper-aluminum composite bar; the anode copper-aluminum composite bar and the cathode copper-aluminum composite bar both comprise a copper part and an aluminum part, and a joint part of the copper part and the aluminum part is provided with a tin material wrapping layer.

Preferably, the copper part adopts a soft copper bar, and the soft copper bar comprises a plurality of thin copper sheets which are mutually overlapped.

Preferably, the FPC board includes a connection portion and a collection portion, the connection portion includes a connection terminal, a connection line and a socket, and the connection terminal is connected to the socket through the connection line; the acquisition part comprises a plug, an acquisition line and an acquisition terminal, and the plug is connected with the acquisition terminal through the acquisition line; the connection terminals include a temperature connection terminal and a voltage connection terminal.

Preferably, still including the module end plate, the module end plate is located the both ends of electricity core to it is fixed through the module ribbon.

Preferably, the battery further comprises an aluminum bar support, the copper-aluminum composite electrode is arranged on the battery cell through the aluminum bar support, an insulating cover plate is further arranged on the copper-aluminum composite electrode, two electrode through holes are formed in the insulating cover plate, and the positive electrode copper-aluminum composite bar and the negative electrode copper-aluminum composite bar respectively extend out of the two electrode through holes.

Preferably, the device also comprises a fixing component, wherein the fixing component comprises a plurality of module cable ties and a plurality of module pressing strips; the module ribbon winds the two sides of the battery core, the module end plates are arranged, and the module pressing strips are arranged on the insulating cover plate.

The utility model discloses owing to adopt above technical scheme, make it compare with prior art, have following advantage and positive effect:

1. the utility model provides a power battery temperature and voltage integrated collection, which realizes reliable performance and efficient production of aluminum-copper connection scheme by adopting the copper-aluminum composite electrode, reduces electrode cost and weight; the FPC board has the characteristics of high assembly wiring density, small volume, light weight, thin thickness and good bending property, reduces the cost, is easy to install, and can realize the integration of process automation and detection.

2. The utility model provides an integrative collection of power battery temperature voltage adopts soft copper bar, improves the electric conductivity, dispels the heat easily, is convenient for adjust the installation mistake, for electric automobile provides safety, stable electrically conductive connection.

3. The utility model provides an integrative collection of power battery temperature voltage, the copper part with the joint portion of aluminium part is equipped with tin material parcel layer, prevents copper aluminium and air contact, and the effectual aluminium wire that prevents is by the oxidation.

Drawings

Fig. 1 is an assembly diagram of the present invention.

Wherein: 1-battery core, 2-aluminum bar, 3-1-anode copper aluminum composite bar, 3-2-cathode copper aluminum composite bar, 4-module end plate, 5-aluminum bar bracket, 6-insulating cover plate, 7-module binding belt and 8-module layering.

Detailed Description

As shown in the attached figure 1, the utility model provides a temperature and voltage integrated acquisition structure of a power battery, which comprises a FPC board, an electric core 1 and a copper-aluminum composite electrode, wherein the FPC board is electrically connected with the copper-aluminum composite electrode;

the copper-aluminum composite electrode comprises a positive copper-aluminum composite row 3-1 and a negative copper-aluminum composite row 3-2; the battery also comprises two aluminum bars 2 connected with the battery cell 1, wherein the two aluminum bars 2 are also respectively connected with a positive copper aluminum composite bar 3-1 and a negative copper aluminum composite bar 3;

the anode copper-aluminum composite bar 3-1 and the cathode copper-aluminum composite bar 3-2 both comprise a copper part and an aluminum part, and a joint part of the copper part and the aluminum part is provided with a tin material wrapping layer.

The utility model adopts the copper-aluminum composite electrode to realize the aluminum-copper connection scheme with reliable performance and high production efficiency, thereby reducing the electrode cost and the weight; the FPC board has the characteristics of high assembly wiring density, small volume, light weight, thin thickness and good bending property, reduces the cost, is easy to install, can realize the integration of process automation and detection, has good performance in severe environment inside a power battery, resists corrosion and mechanical shock vibration, meets the requirements, and has high long-term stability.

In this embodiment, the copper part adopts soft copper bar, and soft copper bar is including the mutual superimposed thin copper sheet of several, can improve the electric conductivity, dispel the heat easily, be convenient for adjust the installation mistake, provides safe, stable electrically conductive connection for electric automobile.

In this embodiment, the FPC board includes a connection portion and a collection portion, the connection portion includes a connection terminal, a connection line and a socket, and the connection terminal is connected to the socket through the connection line; the acquisition part comprises a plug, an acquisition line and an acquisition terminal, and the plug is connected with the acquisition terminal through the acquisition line; the connection terminals include a temperature connection terminal and a voltage connection terminal.

In this embodiment, still including module end plate 4, module end plate 4 locates the both ends of electric core 1 to it is fixed through the module ribbon.

In the embodiment, the battery also comprises an aluminum bar bracket 5, the copper-aluminum composite electrode is arranged on the battery cell 1 through the aluminum bar bracket 5,

an insulating cover plate 6 is further arranged on the copper-aluminum composite electrode, two electrode through holes are formed in the insulating cover plate 6, and the positive electrode copper-aluminum composite row 3-1 and the negative electrode copper-aluminum composite row 3-2 respectively extend out of the two electrode through holes.

Still including fixed subassembly, fixed subassembly includes two module ribbons 7 and two module layering 7, and module ribbon 5 sets up around module end plate 4 of 1 both sides of electric core, and through module ribbon 5 with the integrative collection structure of power battery temperature and voltage fixed as a whole, module layering 7 is located on the insulating cover plate, is fixed in by the installed part through module layering 7 with the integrative collection structure of power battery temperature and voltage.

Claims

1. A temperature and voltage integrated acquisition structure of a power battery is characterized by comprising an FPC board, an electric core and a copper-aluminum composite electrode, wherein the FPC board is electrically connected with the copper-aluminum composite electrode; the copper-aluminum composite electrode comprises an anode copper-aluminum composite bar and a cathode copper-aluminum composite bar; the battery also comprises two aluminum bars connected with the battery cell, and the two aluminum bars are respectively connected with the positive copper-aluminum composite bar and the negative copper-aluminum composite bar;

the anode copper-aluminum composite bar and the cathode copper-aluminum composite bar both comprise a copper part and an aluminum part, and joint parts of the copper part and the aluminum part are provided with tin material wrapping layers;

the FPC board comprises a connecting part and an acquisition part, wherein the connecting part comprises a connecting terminal, a connecting wire and a socket, and the connecting terminal is connected with the socket through the connecting wire; the acquisition part comprises a plug, an acquisition line and an acquisition terminal, and the plug is connected with the acquisition terminal through the acquisition line;

the connection terminals include a temperature connection terminal and a voltage connection terminal.

2. The structure for integrally collecting the temperature and the voltage of the power battery as claimed in claim 1, wherein the copper portion is made of a soft copper bar, and the soft copper bar comprises a plurality of thin copper sheets which are overlapped with each other.

3. The structure of claim 1, further comprising module end plates disposed at two ends of the battery core and fixed by a module tie.

4. The integrated acquisition structure of the temperature and the voltage of the power battery according to claim 3, further comprising an aluminum bar bracket, wherein the copper-aluminum composite electrode is arranged on the battery cell through the aluminum bar bracket;

the copper-aluminum composite electrode is characterized in that an insulating cover plate is further arranged on the copper-aluminum composite electrode, two electrode through holes are formed in the insulating cover plate, and the positive electrode copper-aluminum composite bar and the negative electrode copper-aluminum composite bar respectively extend out of the two electrode through holes.

5. The integrated acquisition structure for the temperature and the voltage of the power battery as claimed in claim 4, further comprising a fixing component, wherein the fixing component comprises a plurality of module ties and a plurality of module battens; the module ribbon winds the two sides of the battery core, the module end plates are arranged, and the module pressing strips are arranged on the insulating cover plate.