A detection connecting wire and a manufacturing method thereof

Abstract

The present invention relates to the field of connecting wire technology, and in particular to a detection connecting wire and a method for making the same, wherein a plurality of detection modules are provided, each detection module detects a battery module respectively, a connecting piece is connected to a detection end of the battery module, a first conductor is connected to an external detection device, and the first conductor is connected to the connecting piece through a detection member, so as to form a detection loop from the battery module to the detection device, thereby being able to detect the working state of the battery module in real time. The detection connecting wire of the present invention realizes the detection of the battery module through the first conductor, has a simple structure, is easy to manufacture, and realizes the detection connection structure of the battery module in the form of a connecting wire, so that the detection structure of the electronic paper module becomes simpler and smaller in size, and also helps to reduce the detection cost.

Description

Technical Field

[0001] The present invention relates to the technical field of connecting wires, and in particular to a detection connecting wire and a manufacturing method thereof. Background Art

[0002] At present, new energy vehicle battery modules need to be tested during production and use, such as over-temperature detection and overload detection. The battery management system (BMS) is a control system that protects the safety of power batteries. It monitors the battery status at all times, alleviates the inconsistency of the battery pack through necessary measures, and provides protection for the safety of new energy vehicles.

[0003] Among the existing battery management systems, most use flexible circuit boards (FPCs) as detection components, integrating the detection circuits of each battery module on the same flexible circuit board (FPC), and then providing multiple nickel sheets, which are respectively connected to different battery modules, and then connected to the detection control device through the flexible circuit board (FPC), thereby realizing the detection of the battery module.

[0004] However, the use of flexible circuit boards (FPC) requires cumbersome circuit layout and complex manufacturing processes. In addition, as the number of circuits increases, the volume increases, resulting in a large volume for the battery module detection device. If the flexible circuit board (FPC) is damaged, it is difficult to repair and the replacement cost is high. Summary of the invention

[0005] In view of the problems of the prior art, the present invention provides a detection connection line and a manufacturing method thereof, directly setting a plurality of first conductors and a detection member connection and matching structure, which can simultaneously detect the working status of multiple battery modules, has a small size and a simple connection structure.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a detection connecting line, including several detection modules, the detection modules include a first conductor, a connecting plate and a detection member, at least one first conductor is provided, one end of the detection member is electrically connected to the connecting plate, and the other end of the detection member is electrically connected to the first conductor.

[0007] Preferably, the detection module is provided with a plurality of first conductors, and the detection module further comprises a conductive component, adjacent first conductors are electrically connected through the conductive component, and the other end of the detection element is electrically connected to one of the plurality of first conductors.

[0008] Preferably, the conductive component includes a plurality of 0 ohm resistors, and adjacent first conductors are electrically connected via the 0 ohm resistors.

[0009] Preferably, the conductive component includes a plurality of second conductors, and adjacent second conductors are electrically connected via the second conductors.

[0010] Preferably, a first gap is provided between adjacent detection modules, and the first gap is used to isolate adjacent detection modules.

[0011] Preferably, the detection module further includes two first insulating layers, both sides of the first conductor are covered with the first insulating layers, and the conductive component, the detection element and the connecting piece are exposed outside the first insulating layers.

[0012] Preferably, a first gap is provided between adjacent detection modules, and two first insulating layers of the detection module are each provided with a second gap, and the second gap is communicated with the first gap.

[0013] Preferably, the detection module further includes a second insulating layer, and the second insulating layer is used to connect two adjacent first insulating layers.

[0014] A method for making a detection connecting line comprises the following steps:

[0015] A. Select a number of connecting plates, the number of which is less than or equal to the number of first conductors;

[0016] B. If different connecting pieces are respectively welded and fixed to different first conductors, proceed to step C; if different connecting pieces are all welded to the same first conductor, proceed to step D;

[0017] C. Cut a third notch on each first conductor, where the third notch is located on one side of the connecting piece; weld the detection piece to the third notch;

[0018] D. Cut a plurality of third notches on the first conductor, with one third notch on one side of each connecting piece; cut a plurality of first notches on the first conductor, with first notches arranged between adjacent connecting pieces, and electrically isolating adjacent connecting pieces through the first notches; weld the detection piece to the third notches, and electrically connect different connecting pieces to different first conductors through the conductive piece.

[0019] Preferably, assuming that the number of first conductors is N and the number of connecting plates is M, the first conductors are represented by Ti and the connecting plates are represented by Lm, wherein 0 <i<N,0<m<M;

[0020] In step C, the connection sheet Lm is electrically connected to the first conductor Ti, and accordingly, the first conductor T1 to the first conductor Ti need to be cut out with a first notch at the position of the connection sheet Lm, where i=m;

[0021] In step D, the connecting piece L1 is welded and fixed to the first conductor T1, and the connecting piece L2 is welded and fixed to the first conductor T1 and electrically connected to the first conductor T2 through a conductive component. Then, only a first notch needs to be set between the connecting piece L1 and the connecting piece L2 on the first conductor T1; the connecting piece L3 is welded and fixed to the first conductor T1 and electrically connected to the first conductor T3 through a conductive component. Then, at least two first notches need to be set between the connecting piece L2 and the connecting piece L3, which are cut on the first conductor L1 and the first conductor L2 respectively; the connecting piece Lm is welded and fixed to the first conductor L1 and electrically connected to the first conductor Ti through a conductive component. Then, at least i first notches need to be set between the connecting piece Lm and the connecting piece Lm-1, which are cut on the first conductor T1 to the first conductor Ti respectively, where m-1=i. Beneficial effects of the present invention:

[0022] The present invention provides a detection connection line and a manufacturing method thereof, wherein a plurality of detection modules are provided, each detection module detects a battery module respectively, a connection piece is connected to the detection end of the battery module, a first conductor is connected to an external detection device, and the first conductor is connected to the connection piece through a detection member, so as to form a detection loop from the battery module to the detection device, thereby being able to detect the working state of the battery module in real time. The detection connection line of the present invention realizes the detection of the battery module through the first conductor, has a simple structure, is easy to manufacture, and realizes the detection connection structure of the battery module in the form of a connection line, so that the detection structure of the electronic paper module becomes simpler and smaller in size, and also helps to reduce the detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0024] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0025] Figure 3 It is a structural diagram of embodiment 1 of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure after adding a first insulating layer according to the first embodiment of the present invention.

[0027] Figure 5 The structure of the second embodiment of the present invention is shown in FIG. Figure 1 .

[0028] Figure 6 for Figure 5 Schematic diagram of the structure with a second insulating layer added.

[0029] Figure 7 for Figure 6 Cross-sectional view of .

[0030] Figure 8 The structure of the second embodiment of the present invention is shown in FIG. Figure 2 .

[0031] Fig. 9 for Figure 8 Cross-sectional view of .

[0032] Fig.10 It is a schematic diagram of the structure of the present invention after the third insulating layer is covered on the basis of the second insulating layer.

[0033] Fig.11 It is a schematic diagram of the structure of the present invention after the third insulating layer is covered on the basis of only the first insulating layer.

[0034] exist Figures 1 to 11 Reference numerals in the drawings include:

[0035] 1-detection module, 2-first conductor, 3-connecting piece, 4-detection piece, 5-conductive component, 6-first notch, 7-second notch, 8-first insulating layer, 9-second insulating layer, 10-third notch, 11-third insulating layer. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0037] Embodiment 1:

[0038] This embodiment provides a detection connection line, such as Figures 1 to 3 , comprising a plurality of detection modules 1, wherein the detection module 1 comprises a first conductor 2, a connecting sheet 3 and a detection member 4, wherein the first conductor 2 is provided with at least one, one end of the detection member 4 is electrically connected to the connecting sheet 3, and the other end of the detection member 4 is electrically connected to the first conductor 2. Preferably, the connecting sheet 3 is a nickel sheet.

[0039] Specifically, the detection connection line of this embodiment is applicable to a variety of devices that need to be detected. This embodiment is described by taking a battery module as an example, but is not limited to the use of a battery module. Figure 1 and Figure 2As shown, it includes several detection modules 1, each detection module 1 is provided with a connecting piece 3, a detection member 4 and at least one first conductor 2, the connecting piece 3 is used to connect to the detection end of the battery module, and the first conductor 2 is connected to the external detection device, so that a signal loop from the battery module to the detection member 4 to the detection device can be formed. For example, when the detection member 4 is an overload detection element, when the battery module is overloaded, the overload detection element detects it, and by disconnecting or other means, the detection device monitors the signal change of the overload detection element, so as to understand the overload of the battery module. When other functions need to be detected, the detection member 4 uses components with corresponding functions, such as a temperature detection member 4. This embodiment can be made of FFC flexible flat cable to achieve the purpose of small size and simple production. At the same time, it does not require the layout design of complex electronic circuits, and the cost is lower than that of FPC. Since this embodiment is actually a cable, it is easier to repair, or it can be directly replaced, and it is more practical.

[0040] This embodiment provides a detection connection line, such as Figure 3 and Figure 4 A first gap 6 is provided between adjacent detection modules 1 , and the first gap 6 is used to isolate adjacent detection modules 1 .

[0041] Specifically, Figure 4 As shown, a first notch 6 is provided between adjacent detection modules 1. The first notch 6 can be obtained by cutting on the first conductor 2. The first notch 6 is mainly provided to electrically isolate different detection modules 1 to avoid short circuit or other electrical connection contact, so that the detection connection line of this embodiment can work normally.

[0042] This embodiment provides a detection connection line, such as Figure 4 In order to be safer to use, the connecting wire of this embodiment is provided with a first insulating layer 8 and a second insulating layer 9. Figure 4 As shown, the first insulating layer 8 is pasted and covered on the surface of the first conductor 2, and the first insulating layer 8 is set to be several, and the spacer connecting piece 3 is set; then the second insulating layer 9 is pasted between the adjacent first insulating layers 8, and the connecting piece 3 and the detection part 4 are insulated from the outside world by the second insulating layer 9, so as to ensure that the connecting line of this embodiment can work normally. The first insulating layer 8 and the second insulating layer 9 are both set to be multiple in order to facilitate the inspection and maintenance in the subsequent detection work. If it is set to one layer, it will affect the convenience of the subsequent maintenance or replacement process. The first insulating layer 8 and the second insulating layer 9 are preferably, but not limited to, UV glue.

[0043] Embodiment 2:

[0044] This embodiment provides a detection connection line, such as Figures 5 to 7In this embodiment, each detection module 1 includes a plurality of first conductors 2, that is, the connecting pieces 3 are fixed on Figure 5 The first conductor 2 in the first embodiment can be fixed by welding or other methods that can achieve conduction, and the detection member 4 is fixed to one side of each connecting piece 3, and a first notch 6 is cut out on the first conductor 2 to achieve electrical isolation between the connecting pieces 3, such as Figure 5 , take 4 first conductors 2 and 4 connecting pieces 3 as an example for explanation, the 4 connecting pieces 3 are welded on the first conductor 2 at intervals, and a detection piece 4 is arranged on the left side of the connecting piece 3. In order to realize that each connecting piece 3 has a separate detection function, it is necessary to electrically connect each connecting piece 3 with a different first conductor 2. Then, in the order from left to right, the first connecting piece 3 is electrically connected to the first first conductor 2, and the second connecting piece 3 is electrically connected to the second first conductor 2. Therefore, only a first notch 6 needs to be cut between the two connecting pieces 3 and arranged on the first first conductor 2, and then the second connecting piece 3 is electrically connected to the second first conductor 2 through the conductive component 5; the third connecting piece 3 is electrically connected to the third first conductor 2, and then in the second connecting piece 3, the conductive component 5 is electrically connected to the second first conductor 2. Two first notches 6 are cut between the connecting piece 3 and the third connecting piece 3, and they are cut on the first and second first conductors 2, respectively, so that the third connecting piece 3 is disconnected from the second first conductor 2, that is, the third connecting piece 3 is isolated from the second connecting piece 3, and then the third connecting piece 3 is connected to the third first conductor 2 through the conductive component 5; the fourth connecting piece 3 is arranged in the same way as the previous connecting piece 3, and three first notches 6 are arranged between the third connecting piece 3 and the fourth connecting piece 3, and they are cut on the first, second, and third first conductors 2, respectively, so that the fourth connecting piece 3 is isolated from the third connecting piece 3, and then the fourth connecting piece 3 is connected to the fourth first conductor 2 through the conductive component 5. The detection connecting line of this embodiment is to fix several connecting pieces 3 to the same first conductor 2, and then perform electrical isolation and electrical connection between the corresponding first conductor 2 and the corresponding connecting piece 3. The structure is also simple, the volume is also the size of an FFC flexible flat cable, and the cost is lower than that of FPC.

[0045] Further, such as Figure 5 , Figure 6 The conductive component 5 of this embodiment includes a plurality of conductive bodies, for example, a plurality of 0 ohm resistors, which are welded between two first conductors 2 to achieve electrical connection between adjacent first conductors 2. For another example, the conductive body is a second conductor, the length of the second conductor is set, and then it is welded between adjacent first conductors 2, which can also achieve the function of electrical connection. For another example, soldering can be directly selected to directly solder between adjacent first conductors 2, so as to conduct the two first conductors 2. Of course, the conductive component 5 of this embodiment can also be other structures that can achieve the same function.

[0046] Furthermore, this embodiment is the same as the first embodiment, and is provided with a first insulating layer 8 and a second insulating layer 9, the first insulating layer 8 and the second insulating layer 9 are preferably but not limited to UV glue, and a plurality of first insulating layers 8 are adhered to the surface of the first conductor 2 at intervals, such as Figure 6 , Figure 7 , is an implementation method of this embodiment, the first insulating layer 8 is pasted between adjacent connecting pieces 3, and the first notch 6 is not covered by the first insulating layer 8, and then the second insulating layer 9 is covered on the detection member 4 and the conductive component 5, and the two adjacent first insulating layers 8 are connected, so that the connecting wire of this embodiment is insulated from the external structure to prevent affecting the detection work of this embodiment, and when a problem occurs in a detection module 1, the first insulating layer 8 or the second insulating layer 9 of the detection module 1 can be disassembled separately for inspection, which is convenient for maintenance. Figure 8 , Fig. 9 As another implementation method of this embodiment, the first insulating layer 8 can be pasted first, and then the first notch 6 can be cut. The first notch 6 can be at any position between the two connecting pieces 3. That is to say, the first insulating layer 8 can be cut. After cutting, a second notch 7 identical to the first notch 6 will appear on the first insulating layer 8.

[0047] Figure 7 and Fig. 9 The second insulating layer 9 shown in the figure is a single layer, but it can be further configured as a two-layer structure, which covers both sides of the first conductor 2 respectively, and covers the conductive component 5 and the detection element 4.

[0048] Embodiment three:

[0049] In this embodiment, based on the first and second embodiments, a third insulating layer 11 is further provided. Fig.10 As shown, both sides of several detection modules of this embodiment are pasted and covered with a third insulating layer 11, so that the first conductor 2, the first insulating layer 8, the second insulating layer 9 and the detection element 4 are all covered between two layers of the third insulating layer 11, thereby protecting several detection modules 1, reducing external damage to the detection modules 1, and helping to increase the service life of the detection connecting line of this embodiment.

[0050] As another implementation of this embodiment, Fig.11 In this embodiment, the second insulating layer 9 may not be provided, but the first insulating layer 8, the first conductor 2 and the detection element 4 may be directly covered with two layers of third insulating layers 11, which can also achieve the protection function of the detection module 1.

[0051] Furthermore, the third insulating layer 11 is made of high-temperature resistant UV glue or tape to improve the high-temperature resistance of this embodiment.

[0052] Embodiment 4:

[0053] The present embodiment provides a method for manufacturing a detection connection line, comprising the following steps: A. selecting a plurality of connection pieces 3, the number of which is less than or equal to the number of first conductors 2, and the first conductor 2 is provided with a first notch 6 and a third notch 10;

[0054] B. If different connecting pieces 3 are respectively welded and fixed to different first conductors 2, proceed to step C; if different connecting pieces 3 are all welded to the same first conductor 2, proceed to step D;

[0055] C. Cut a third notch 10 from each first conductor 2, and the third notch 10 is located on one side of the connecting piece 3; weld the detection member 4 to the third notch 10; Figure 3 , Figure 4 ;

[0056] D. Cut out a plurality of third notches 10 on the first conductor 2, with one third notch 10 on one side of each connecting piece 3; cut out a plurality of first notches 6 on the first conductor 2, with first notches 6 provided between adjacent connecting pieces 3, and electrically isolate adjacent connecting pieces 3 through the first notches 6; weld the detection element 4 to the third notches 10, and electrically connect different connecting pieces 3 to different first conductors 2 through conductive elements. Figures 5 to 9 .

[0057] In this embodiment, in addition to the above steps, a first insulating layer 8 may be attached to the surface of the first conductor 2. Figure 7 , Fig. 9 As shown, the first insulating layers 8 are arranged at intervals, the connecting sheets 3 are arranged between adjacent first insulating layers 8, and the second insulating layers 9 are further pasted between the adjacent first insulating layers 8, and the second insulating layers 9 cover the detection element 4 and the conductive component 5. The installation order of the first insulating layer 8 and the second insulating layer 9 is not limited and can be arranged according to actual production conditions.

[0058] Specifically, in this embodiment, assuming that the number of the first conductors 2 is N, then Figures 1 to 9 From top to bottom in the figure, they are first conductor 2T1 to first conductor 2T4, and the connecting piece 3 is represented by Lm. Then, in the figure, the order from left to right is connecting piece 3L1 to connecting piece 3L4, where 0 <i<N,0<m<M;

[0059] In step C, the connecting piece 3Lm is electrically connected to the first conductor 2Ti, and accordingly, the first conductor 2T1 to the first conductor 2Ti need to be cut out with a first notch 6 at the position of the connecting piece 3Lm, where i=m;

[0060] In step D, the connecting piece 3L1 is welded and fixed to the first conductor 2T1, and the connecting piece 3L2 is welded and fixed to the first conductor 2T1 and electrically connected to the first conductor 2T2 through the conductive component 5. Then, only the first notch 6 needs to be provided on the first conductor 2T1 between the connecting piece 3L1 and the connecting piece 3L2;

[0061] The connecting piece 3L3 is fixedly welded to the first conductor 2T1 and electrically connected to the first conductor 2T3 through the conductive component 5. Then, at least two first notches 6 need to be provided between the connecting piece 3L2 and the connecting piece 3L3, which are cut on the first conductor 2L1 and the first conductor 2L2 respectively.

[0062] The connecting piece 3Lm is welded and fixed to the first conductor 2L1 and electrically connected to the first conductor 2Ti through the conductive component 5. Therefore, at least i first notches 6 need to be set between the connecting piece 3Lm and the connecting piece 3Lm-1, which are cut on the first conductor 2T1 to the first conductor 2Ti respectively, where m-1=i.

[0063] The manufacturing method of this embodiment can produce a detection line with the same function as the FPC in battery module detection. The manufacturing method is simple and easy to operate. The existing conductor can be cut at the corresponding position and the detection piece 4 and the conductive component 5 can be fixed. The detection function of the battery module can be realized, and the method is small in size, low in cost and highly practical.

[0064] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A method for making a detection connection line, characterized in that: The following steps are involved: A. Select a number of connecting plates, the number of which is less than or equal to the number of first conductors; B. If different connecting pieces are respectively welded and fixed to different first conductors, proceed to step C; if different connecting pieces are all welded to the same first conductor, proceed to step D; C. Cut a third notch on each first conductor, where the third notch is located on one side of the connecting piece; weld the detection piece to the third notch; D. Cut a plurality of third notches on the first conductor, with one third notch on one side of each connecting piece; cut a plurality of first notches on the first conductor, with first notches provided between adjacent connecting pieces, and electrically isolating adjacent connecting pieces through the first notches; weld the detection piece to the third notches, and electrically connect different connecting pieces to different first conductors through the conductive piece; Assuming the number of first conductors is N and the number of connecting plates is M, the first conductors are denoted as Ti and the connecting plates are denoted as Lm, where 0 <i<N,0<m<M; In step C, the connection sheet Lm is electrically connected to the first conductor Ti, and accordingly, the first conductor T1 to the first conductor Ti need to be cut out with a first notch at the position of the connection sheet Lm, where i=m; In step D, the connecting piece L1 is welded and fixed to the first conductor T1, and the connecting piece L2 is welded and fixed to the first conductor T1 and electrically connected to the first conductor T2 through the conductive component, and only a first notch needs to be provided on the first conductor T1 between the connecting piece L1 and the connecting piece L2; The connecting piece L3 is welded and fixed to the first conductor T1 and is electrically connected to the first conductor T3 through the conductive component. Therefore, at least two first notches need to be provided between the connecting piece L2 and the connecting piece L3, which are cut on the first conductor T1 and the first conductor T2 respectively. The connecting piece Lm is welded and fixed to the first conductor T1 and is electrically connected to the first conductor Ti through the conductive component. Then, at least i first notches need to be provided between the connecting piece Lm and the connecting piece Lm-1, which are cut from the first conductor T1 to the first conductor Ti, respectively, where m-1=i; A first insulating layer is pasted on the surface of the first conductor. The first insulating layers are arranged at intervals. The connecting piece is between adjacent first insulating layers. A second insulating layer is also pasted between adjacent first insulating layers. The second insulating layer covers the detection element and the conductive component.

2. A detection connecting line produced by the manufacturing method according to claim 1, characterized in that: It comprises a plurality of detection modules, each of which comprises a first conductor, a connecting piece and a detection member, one end of the detection member is electrically connected to the connecting piece, and the other end of the detection member is electrically connected to the first conductor; The connecting piece is used to connect to the detection end of the battery module, and the first conductor is connected to the external detection device to form a signal loop from the battery module to the detection element to the detection device; The detection module is provided with a plurality of first conductors, and the detection module further comprises a conductive component, adjacent first conductors are electrically connected through the conductive component, and the other end of the detection element is electrically connected to one of the plurality of first conductors; The conductive component includes a plurality of 0 ohm resistors, and adjacent first conductors are electrically connected via the 0 ohm resistors; a first notch and a third notch are provided on the first conductor; A first notch is provided between adjacent detection modules, and the first notch is used to isolate adjacent detection modules; the first notch and the third notch are obtained by cutting on the first conductor; the third notch is located on one side of the connecting piece; and the detection member is welded to the third notch; The detection module further includes two first insulating layers, both sides of the first conductor are covered with the first insulating layers, and the conductive component, the detection element and the connecting sheet are exposed outside the first insulating layers; The two first insulating layers of the detection module are both provided with a second notch, and the second notch is connected to the first notch; the detection module further comprises a second insulating layer, and the second insulating layer is used to connect two adjacent first insulating layers; A plurality of first insulating layers are pasted on the surface of the first conductor at intervals, the first insulating layer is pasted between adjacent connecting pieces, and the first gap is not covered by the first insulating layer, and then the second insulating layer is covered on the detection element and the conductive component to connect two adjacent first insulating layers, thereby isolating the connecting line from the external structure; The second insulating layer is a two-layer structure, which covers the two sides of the first conductor respectively, and covers the conductive components and the detection components.

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