Conductive connection structure of battery pack detection plate

Abstract

The utility model discloses a conductive connection structure of a battery pack detection board, which comprises an FPC connection body, the first side of the FPC connection body is provided with a connection bonding pad used for being electrically connected with the detection board, the second side of the FPC connection body is provided with a connection lug, and the FPC connection body is printed with a conductive circuit used for realizing electric signal transmission; and the first end of the conductive connecting sheet is electrically connected with the connecting lug, and the second end is electrically connected with the bus metal bar. When in use, the FPC connecting body is welded with the detection board through the connecting bonding pad, the conductive connecting sheet is welded with the confluence metal bar, so that the FPC connecting body and the conductive connecting sheet are used as conductors to form conductive connection between the detection board and the confluence metal bar; therefore, when mechanical vibration is generated in the transportation process, buffering can be carried out through the FPC connecting body, deformation of the conductive connecting structure is reduced, and the overall tensile property is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a battery pack detection board conductive connection structure. BACKGROUND

[0002] With the rapid development of energy storage technology, the application of battery is more and more extensive, so the requirement of safety and reliability of battery is higher and higher. In order to monitor the running state of battery pack, detection device is usually arranged on battery pack to monitor the information such as temperature and safety valve state during the running of battery pack. The existing detection device comprises circuit board as detection board, busbar and connecting piece for connecting detection board and busbar. In order to reduce cost, PCB circuit board is used as detection board, and the two ends of connecting piece are welded and fixed with detection board and busbar respectively.

[0003] Since the connecting piece is welded and fixed to form rigid connection with detection board and busbar, collision or mechanical vibration will inevitably occur during transportation. The rigid connection mode is prone to cause the detection board and the connecting piece to be loose or even deformed and damaged when subjected to long-term mechanical vibration, thereby affecting the normal use of battery pack. SUMMARY

[0004] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a battery pack detection board conductive connection structure, which has the advantages of effectively improving the tensile resistance.

[0005] The purpose of the utility model is achieved by the following technical scheme:

[0006] According to the battery pack detection board conductive connection structure provided by the embodiment of the present disclosure, the following is included:

[0007] The FPC connecting body is provided with a connecting pad on the first side for electrical connection with the detection board, and a connecting lug is formed on the second side. The FPC connecting body is provided with a conductive circuit for realizing electrical signal transmission.

[0008] The conductive connecting piece is electrically connected to the connecting lug at the first end and electrically connected to the busbar at the second end.

[0009] In use, the FPC connecting body is welded and connected to the detection board through the connecting pad, and the conductive connecting piece is welded and connected to the busbar, so that the FPC connecting body and the conductive connecting piece are used as conductive bodies to form the conductive connection between the detection board and the busbar. Since the FPC connecting body has good tensile resistance, it can be buffered by the FPC connecting body when mechanical vibration occurs during transportation, reducing the deformation of the conductive connection structure and effectively improving the overall tensile resistance, flexibility and extendibility, and having better anti-vibration performance.

[0010] In some example embodiments, a deformation slot is formed between the connecting pad and the connecting lug in the FPC connecting body, and a micro connecting structure is formed on one side of the deformation slot.

[0011] The above technical solutions are implemented, and the mechanical buffering performance of the FPC connecting body is further improved through the deformation slot, and the stability of the structure of the FPC connecting body is maintained, and deformation of the FPC connecting body is reduced.

[0012] In some example embodiments, a temperature sensor is further arranged on the conductive connecting piece to collect temperature information transmitted by the corresponding busbar.

[0013] The above technical solutions are implemented, and the temperature signal collected is more accurate by arranging the temperature sensor on the conductive connecting piece.

[0014] In some example embodiments, a receiving groove is arranged on the conductive connecting piece to accommodate the temperature sensor, and clamping springs are symmetrically arranged on two sides of the receiving groove to clamp and fix the temperature sensor.

[0015] The above technical solutions are implemented, and the temperature sensor is conveniently connected and fixed.

[0016] In some example embodiments, a welding groove is further arranged on one side of the receiving groove on the conductive connecting piece.

[0017] The above technical solutions are implemented to facilitate welding and fixing of the conductive connecting piece and the connecting lug.

[0018] In some example embodiments, the conductive connecting piece is made of hard nickel sheet.

[0019] In some example embodiments, the connecting lug extends outward from the second side of the FPC connecting body, and the conductive connecting piece is arranged in parallel to the extension direction of the detection plate.

[0020] In some example embodiments, the conductive connecting piece is arranged perpendicular to the extension direction of the detection plate.

[0021] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model embodiment provides a battery pack detection board conductive connection structure, include: FPC connecting body, its first side is equipped with the connecting pad for with detection board electricity is connected, the second side forms has the connecting lug, the FPC connecting body is printed with the conductive circuit for being used for realizing electric signal transmission, the conductive connecting piece, its first end with connecting lug electricity is connected, the second end with the busbar metal row electricity is connected. When using, the FPC connecting body is connected with the detection board through the connecting pad and is welded, the conductive connecting piece is welded with the busbar metal row, thereby with FPC connecting body and conductive connecting piece as the conductor forms the conductive connection of detection board and busbar metal row, and because FPC connecting body has better tensile resistance characteristic, therefore when mechanical vibration is produced in the transportation process, can pass through FPC connecting body and reduce the deformation of this conductive connection structure and effectively improve the overall tensile resistance performance, improve the flexibility and extendibility, and have better anti vibration performance. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is the structural schematic diagram of the utility model embodiment.

[0024] Fig. 2 It is the front view of the utility model embodiment.

[0025] Fig. 3 It is the front view of another embodiment of the utility model.

[0026] The corresponding component name represented by the figure number and letter:

[0027] 10, FPC connecting body, 11, connecting pad, 12, connecting lug, 13, deformation groove, 14, micro connection structure, 20, conductive connecting piece, 21, temperature sensor, 22, accommodating groove, 23, clamping spring, 24, welding groove. DETAILED DESCRIPTION

[0028] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments, obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0029] As Figs. 1 to 3As shown, the utility model embodiment provides a kind of battery pack detection board conductive connection structure, comprising: FPC connecting body 10, its first side is equipped with connecting pad 11 for with detection board electric connection, second side is formed with connecting ear piece 12, FPC connecting body 10 is printed with conductive circuit to be used to realize electric signal transmission;Conductive connecting piece 20, its first end is electrically connected with connecting ear piece 12, second end is electrically connected with busbar metal row.

[0030] Specifically, FPC connecting body 10 is formed by FPC matrix pre-cut, its substrate is usually polyimide, connecting pad 11 is fixed welding area on FPC connecting body 10, it can be fixed by soldering etc. with the conductive welding point on detection board welding, connecting ear piece 12 is also provided with welding area for with conductive connecting piece 20 welding fixed, the size of connecting ear piece 12 needs to meet to form welding with conductive connecting piece 20.

[0031] Meanwhile, deformation groove 13 is opened between connecting pad 11 and connecting ear piece 12 in FPC connecting body 10, and micro connection structure 14 is formed on one side of deformation groove 13, deformation groove 13 is long strip and is located close to the middle of FPC connecting body 10, so that FPC connecting body 10 can disperse vibration force when subjected to mechanical vibration, micro connection structure 14 is naturally formed after opening deformation groove 13;FPC connecting body 10 can further improve the mechanical buffering performance by deformation groove 13, and the stability of FPC connecting body 10 structure can be maintained by micro connection structure 14, to reduce the deformation of FPC connecting body 10.

[0032] Detection board is PCB circuit board, and busbar metal row includes several aluminum bars, and the aluminum bars are used to realize series connection of adjacent single cells, which can be connected with the cells by aluminum wire welding, and conductive connecting piece 20 is made of hard nickel sheet to have better conductivity, and the conductive connecting piece 20 can be welded and fixed with the busbar metal row by laser welding.

[0033] In the embodiment, as shown, Fig. 2 Connecting ear piece 12 extends outward from the second side of FPC connecting body 10, and conductive connecting piece 20 is arranged along the extension direction parallel to the detection board, and it can be understood that, in this embodiment, connecting ear piece 12 needs to extend above the aluminum bar, so that conductive connecting piece 20 is also located above the aluminum bar when welded and connected with connecting ear piece 12, so as to be welded and connected.

[0034] In another embodiment, as shown, Fig. 3As shown, the conductive connecting piece 20 is arranged along the extension direction perpendicular to the detection plate, and in this embodiment, the connecting lug 12 does not need to extend outward, but the second end of the conductive connecting piece 20 extends outward above the aluminum bar to facilitate the welding connection of the two, and the advantage of this mode is that since the FPC connecting body 10 is arranged with conductive lines, when the connecting lug 12 extends outward to the aluminum bar, it is inevitable to overlap with the aluminum bar, and there is a certain risk of electric leakage, and when the embodiment is used, the FPC connecting body is not overlapped with the aluminum bar, and the risk of electric leakage is eliminated.

[0035] The conductive connecting piece 20 is also provided with a temperature sensor 21 for collecting temperature information transmitted by the corresponding busbar, and the conductive connecting piece 20 also has good heat conduction effect, so that the temperature sensor 21 can basically obtain the temperature of the busbar when it is in contact with the conductive connecting piece 20, and by arranging the temperature sensor 21 on the conductive connecting piece 20, the collected temperature signal can be more accurate, so as to realize thermal runaway monitoring of the battery pack.

[0036] Further, the conductive connecting piece 20 is provided with a receiving groove 22 for receiving the temperature sensor 21, and the receiving groove 22 is symmetrically provided with a clamping spring 23 on both sides, which is used for clamping and fixing the temperature sensor 21, and the clamping spring 23 can be bent upward from the part of the conductive connecting piece 20 in the receiving groove 22 to connect and fix the temperature sensor 21, and a welding groove 24 is also arranged on one side of the conductive connecting piece 20 located in the receiving groove 22, so as to weld and fix the conductive connecting piece 20 and the connecting lug 12.

[0037] In use, the FPC connecting body 10 is welded and connected with the detection plate through the connecting pad 11, and the conductive connecting piece 20 is welded and connected with the busbar, so that the FPC connecting body 10 and the conductive connecting piece 20 are used as conductors to form the conductive connection between the detection plate and the busbar, and since the FPC connecting body 10 has good tensile resistance, when mechanical vibration occurs during transportation, the FPC connecting body 10 can be used for buffering to reduce the deformation of the conductive connection structure, and effectively improve the overall tensile resistance, flexibility and extendibility, and have better anti-vibration performance.

[0038] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are equivalent modifications and evolutions of the above embodiments according to the essential technical of the present application, and these all belong to the protection scope of the present application.

Claims

1. A conductive connection structure for a battery pack detection board, characterized in that, include: The FPC connector body has a first side with a connection pad for electrical connection with the detection board and a second side with a connection lug. The FPC connector body has printed conductive lines for electrical signal transmission. The conductive connector has its first end electrically connected to the connecting lug and its second end electrically connected to the busbar.

2. The conductive connection structure of the battery pack detection board according to claim 1, characterized in that, The FPC connector body has a deformation groove between the connector pad and the connector lug, and a micro-connection structure is formed on one side of the deformation groove.

3. The conductive connection structure of the battery pack detection board according to claim 1 or 2, characterized in that, The conductive connector is also equipped with a temperature sensor to collect temperature information transmitted by the corresponding busbar.

4. The conductive connection structure of the battery pack detection board according to claim 3, characterized in that, The conductive connecting piece is provided with a receiving groove for accommodating the temperature sensor, and the receiving groove is provided with symmetrical snap-fit ​​springs on both sides for clamping and fixing the temperature sensor.

5. The conductive connection structure of the battery pack detection board according to claim 4, characterized in that, The conductive connecting piece is also provided with a welding groove on one side of the receiving groove.

6. The conductive connection structure of the battery pack detection board according to claim 1, characterized in that, The conductive connector is made of hard nickel.

7. The conductive connection structure of the battery pack detection board according to claim 1, characterized in that, The connecting tabs extend outward from the second side of the FPC connecting body, and the conductive connecting tabs are arranged along the extension direction parallel to the detection plate.

8. The conductive connection structure of the battery pack detection board according to claim 1, characterized in that, The conductive connecting piece is arranged along the extension direction perpendicular to the detection plate.

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