Battery cell connection system based on FFC

Abstract

The utility model belongs to the technical field of battery cell connection, and particularly relates to a battery cell connection system based on an FFC (Flexible Flat Cable), which is characterized in that an FFC assembly is arranged in the middle of an aluminum bar; the FFC assembly comprises a circuit board, a connecting piece, a thermistor and a nickel sheet, and the circuit board, the connecting piece, the thermistor and the nickel sheet are integrally arranged; wherein the circuit board is electrically connected with the thermistor through the connecting piece, and the nickel sheet is electrically connected with the aluminum bar through the thermistor; the FFC assembly transmits a voltage signal and a temperature signal of the cell to the sampler through the circuit board, the space is more compact, and the size is smaller. According to the FFC assembly, the circuit board, the connecting piece, the thermistor and the nickel sheet are integrally arranged, so that the CCS process is reduced, the cost is reduced, and the production efficiency is improved; and the nickel sheet is directly arranged on the connecting piece, so that a nickel sheet terminal and related procedures for correspondingly connecting the nickel sheet terminal are omitted, and the material cost and the labor cost are greatly saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery cell connection, and particularly relates to a battery cell connection system based on FFC. Background Art

[0002] CCS is configured in the battery pack to collect the temperature and / or voltage of multiple battery cells and monitor the state of the battery cells; the wiring scheme of CCS includes FFC wiring, which is usually composed of a bottom plate, an aluminum row and FFC. The aluminum row is arranged on the front side of the bottom plate, and the FFC is arranged on the back side of the bottom plate; the FFC is connected to the nickel sheet terminal, and the nickel sheet terminal passes through the bottom plate and is electrically connected to the front side of the aluminum row. The connection process is complex, resulting in high material costs and labor costs.

[0003] Therefore, it is necessary to provide a battery cell connection system based on FFC that enables fast connection and reduces costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a battery cell connection system based on FFC.

[0005] In order to solve the above technical problems, the utility model provides a battery cell connection system based on FFC, including: a bottom plate, on the top of which several aluminum rows and FFC components are arranged; the FFC components are arranged in the middle of the aluminum rows; the FFC components include a circuit board, a connector, a thermistor and a nickel sheet, and the circuit board, the connector, the thermistor and the nickel sheet are integrally arranged; wherein, the circuit board and the thermistor are electrically connected through the connector, and the nickel sheet and the aluminum row are electrically connected through the thermistor.

[0006] Further, the connector is a pcb board.

[0007] Further, the connector is an aluminum substrate.

[0008] Further, the circuit board includes a main strip; the main strip is arranged on the top of the bottom plate and samplers are electrically connected to both ends of the main strip; the connector is arranged on the top of the main strip and is electrically connected to the main strip, and the connector extends out of the main strip and the extending end is electrically connected to the thermistor, wherein,

[0009] The main strip is a flexible flat material.

[0010] Further, the nickel sheet and the aluminum row are connected by welding.

[0011] Further, a connection groove is arranged on the top of the aluminum row, and the nickel sheet is installed in the connection groove.

[0012] Further, a plurality of riveting holes are provided at the top of the aluminum row, and a plurality of riveting posts are provided at the top of the bottom plate. Among them, the riveting posts are adapted to pass through the riveting holes and be hot-riveted with the bottom plate.

[0013] Further, an installation groove adapted to the aluminum row is provided at the top of the bottom plate. Among them, the riveting posts are arranged at the top of the installation groove.

[0014] Further, a circuit installation groove adapted to the circuit board is provided at the top of the bottom plate. A back glue is provided at the bottom of the circuit board, and the circuit board is adhesively connected to the circuit installation groove through the back glue.

[0015] Advantages of the utility model:

[0016] 1. The material of the bottom plate is a plastic suction plate, which has the advantages of light weight, heat resistance, waterproofness and shock absorption, and can stably erect the aluminum row and the FFC component, providing a good working environment for the FFC-based battery cell connection system of the utility model; the bottom plate is installed on the top of the battery cell, the aluminum row is electrically connected to the battery cell and efficiently transfers voltage and temperature to the FFC component, and the FFC component can detect the voltage and temperature of the battery cell in real time and transfer the signal to the sampler, ensuring the stability of the battery cell operation;

[0017] 2. The FFC component conveys the voltage signal and temperature signal of the battery cell to the sampler through the circuit board, with a more compact space and a smaller volume; the FFC component integrates the circuit board, the connector, the thermistor and the nickel sheet, reducing the processes of the CCS, lowering the cost and improving the production efficiency; the thermistor is welded at the center of the connector, and the connection part between the thermistor and the connector is adapted to be surrounded and protected by an insulating board to form a protective cavity, protecting the thermistor while insulating the thermistor, and protecting the equipment; the nickel sheet is directly arranged on the connector, eliminating the related processes of the nickel sheet terminal and the corresponding connection of the nickel sheet terminal, greatly saving the material cost and labor cost. Description of the drawings

[0018] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is Figure 1 the partial enlarged view of A in

[0021] In the figure:

[0022] 100, bottom plate; 110, aluminum busbar; 111, connection groove; 112, riveting hole; 120, installation groove; 121, riveting post;

[0023] 200, FFC component; 210, circuit board; 211, main strip; 212, sampler; 220, connector; 230, thermistor; 240, nickel sheet. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1, as Figure 1-2As shown in the figure, the present utility model provides a cell connection system based on FFC, including: a bottom plate 100, on the top of the bottom plate 100, there are provided several aluminum bars 110 and FFC components 200; the material of the bottom plate 100 is a plastic suction plate, which has the advantages of light weight, heat resistance, waterproofness and shock absorption, and can stably mount the aluminum bars 110 and FFC components 200, providing a good working environment for the cell connection system based on FFC of the present utility model; the bottom plate 100 is installed on the top of the cell, the aluminum bars 110 are electrically connected to the cell and efficiently transfer voltage and temperature to the FFC components 200, and the FFC components 200 can detect the voltage and temperature of the cell in real time and transmit them to the sampler 212, ensuring the stability of the cell operation; the FFC components 200 are arranged in the middle of the aluminum bars 110; the FFC components 200 include a circuit board 210, a connector 220, a thermistor 230 and a nickel sheet 240, and the circuit board 210, the connector 220, the thermistor 230 and the nickel sheet 240 are integrally arranged; wherein, the circuit board 210 is electrically connected to the thermistor 230 through the connector 220, and the nickel sheet 240 is electrically connected to the aluminum bars 110 through the thermistor 230; the FFC components 200 transmit the voltage signal and temperature signal of the cell through the circuit board 210, with a more compact space and a smaller volume; the FFC components 200 integrally arrange the circuit board 210, the connector 220, the thermistor 230 and the nickel sheet 240, reducing the procedures of CCS, lowering the cost and improving the production efficiency; the thermistor 230 is welded at the center of the connector 220, and the connection part between the thermistor 230 and the connector 220 is suitable for being surrounded and protected by an insulating board to form a protection cavity, protecting the thermistor 230 while insulating the thermistor 230, protecting the equipment; the nickel sheet 240 is directly arranged on the connector 220, eliminating the related procedures of the nickel sheet 240 terminals and the corresponding connection of the nickel sheet 240 terminals, greatly saving the material cost and labor cost.

[0026] The connector 220 is a pcb board, also known as a printed circuit board. Since the patterns on the pcb board are repetitive and consistent, it reduces the errors in wiring and assembly, has a small volume and a light weight, greatly reducing the volume of the product; the pcb board can transmit the voltage of the circuit board 210 well and can efficiently dissipate heat from the circuit board 210, avoiding problems such as short circuit and open circuit of the circuit board 210, improving the working reliability of the circuit board 210 and the working efficiency.

[0027] The circuit board 210 includes a main strip 211; the main strip 211 is disposed on the top of the base plate 100 and samplers 212 are electrically connected to both ends of the main strip 211; the connector 220 is disposed on the top of the main strip 211 and is electrically connected to the main strip 211, and the connector 220 extends out of the main strip 211 and the extending end is electrically connected to the thermistor 230. Wherein, the main strip 211 is a flexible flat material; the main strip 211 is electrically connected to the sampler 212, and the main strip 211 can uniformly collect the voltage signal and temperature signal of the battery cell through the connector 220 and transmit them onto the main strip 211, and the main strip 211 transmits the signal to the sampler 212; the connector 220 can dissipate heat while transmitting the voltage of the battery cell.

[0028] The nickel sheet 240 is connected to the aluminum bus bar 110 by welding; the welding method has simple and reliable process, can firmly electrically connect the aluminum bus bar 110 and the nickel sheet 240, and improves the conduction efficiency.

[0029] A connection groove 111 is provided on the top of the aluminum bus bar 110, and the nickel sheet 240 is installed in the connection groove 111; the connection groove 111 can stably place the nickel sheet 240, make the connection between the nickel sheet 240 and the aluminum bus bar 110 more firm, and improve the working efficiency.

[0030] A plurality of riveting holes 112 are provided on the top of the aluminum bus bar 110, and a plurality of riveting posts 121 are provided on the top of the base plate 100. Wherein, the riveting posts are adapted to pass through the riveting holes 112 and be thermally riveted to the base plate 100; the base plate 100 is riveted to a plurality of riveting holes 112 of the aluminum bus bar 110 through a plurality of the riveting posts 121, so that the aluminum bus bar 110 can be correctly installed on the base plate 100, avoiding the shaking of the aluminum bus bar 110; the thermal riveting method can stably install the aluminum bus bar 110 on the base plate 100 before the base plate 100 is welded to the battery cell, avoiding the aluminum bus bar 110 from falling off and increasing the firmness of installation.

[0031] An installation groove 120 adapted to the aluminum bus bar 110 is provided on the top of the base plate 100. Wherein, the riveting posts 121 are provided on the top of the installation groove 120; the installation groove 120 on the top of the chassis can position the aluminum bus bar 110, reduce the height difference between the FFC assembly 200 and the aluminum bus bar 110, reduce the welding difficulty, and effectively improve the production efficiency.

[0032] A circuit installation groove (not shown in the figure) adapted to the circuit board 210 is provided at the top of the bottom plate 100. A back adhesive is provided at the bottom of the circuit board 210, and the circuit board 210 is adhesively connected to the circuit installation groove through the back adhesive; the back adhesive connection is firm, enabling the circuit board 210 to be firmly connected to the bottom plate 100.

[0033] In the second embodiment, the connecting member 220 is an aluminum substrate; the aluminum substrate can minimize the thermal resistance, has good heat conduction performance, is light in weight, reduces the assembly cost, can efficiently dissipate heat from the circuit board 210, prolong the service life of the circuit board 210, and improve the power and reliability of the circuit.

[0034] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cell connection system based on FFC, characterized in that, Including: A bottom plate, on the top of which several aluminum bars and FFC components are arranged; The FFC component is arranged in the middle of the aluminum bar; the FFC component includes a circuit board, a connector, a thermistor and a nickel sheet, and the circuit board, the connector, the thermistor and the nickel sheet are integrally arranged; wherein, The circuit board is electrically connected to the thermistor through the connector, and the nickel sheet is electrically connected to the aluminum bar through the thermistor.

2. The FFC-based battery cell connection system according to claim 1, characterized in that The connector is a pcb board.

3. The FFC-based battery cell connection system according to claim 2, characterized in that The connector is an aluminum substrate.

4. The FFC-based battery cell connection system according to claim 3, characterized in that The circuit board includes a main strip; the main strip is arranged on the top of the bottom plate and samplers are electrically connected to both ends of the main strip; the connector is arranged on the top of the main strip and is electrically connected to the main strip, and the connector extends out of the main strip and the extending end is electrically connected to the thermistor, wherein, The main strip is a flexible flat material.

5. The FFC-based battery cell connection system according to claim 4, characterized in that The nickel sheet is connected to the aluminum bar by welding.

6. The FFC-based battery cell connection system according to claim 5, characterized in that A connection groove is arranged on the top of the aluminum bar, and the nickel sheet is installed in the connection groove.

7. The FFC-based battery cell connection system according to claim 6, characterized in that Several riveting holes are arranged on the top of the aluminum bar, and several riveting posts are arranged on the top of the bottom plate, wherein, The riveting posts are adapted to pass through the riveting holes and thermally rivet with the bottom plate.

8. The FFC-based battery cell connection system according to claim 7, characterized in that An installation groove adapted to the aluminum bar is arranged on the top of the bottom plate, wherein, The riveting posts are arranged on the top of the installation groove.

9. The FFC-based battery cell connection system according to claim 8, characterized in that A circuit installation groove adapted to the circuit board is arranged on the top of the bottom plate, a back glue is arranged on the bottom of the circuit board, and the circuit board is adhesively connected to the circuit installation groove through the back glue.

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