CCS assembly and battery module with same

Abstract

The invention relates to the technical field of new energy, in particular to a CCS assembly and a battery module with the same. The CCS assembly comprises a plurality of first signal acquisition terminals which are respectively coupled to a plurality of first battery monomers of the battery module so as to respectively acquire voltage signals and temperature signals of the plurality of first battery monomers, the first signal acquisition terminal comprises a thermistor thermally coupled with the first battery monomer, a first bonding pad, a second bonding pad and a third bonding pad, the second bonding pad and the third bonding pad are respectively connected to two ends of the thermistor, the first bonding pad is used for leading out the voltage signal, and the second bonding pad and the third bonding pad are used for leading out the temperature signal; the first FFC comprises a plurality of pairs of first wires, one of each pair of first wires is welded to the first bonding pad of the corresponding first signal acquisition terminal, and the other pair of first wires is welded to the second bonding pad; and the second FFC comprises a plurality of second wires, and each second wire is welded to the third bonding pad of the corresponding first signal terminal.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a CCS component and a battery module having the same. Background Art

[0002] In the new energy battery industry, more and more manufacturers use integrated busbars (Cells Contact System, CCS) to collect signals from battery modules, such as collecting the voltage and / or temperature of each battery cell in the battery module.

[0003] CCS components have a variety of configurations, among which flexible printed circuits (FPC) and ordinary wiring harnesses are the mainstream, and a small number are flexible flat cables (FFC) structures.

[0004] Patent document with publication number CN113068297A discloses a CCS component with FFC structure (see the attached document of the patent document). Figure 4 ), which cuts the FFC to the required length, and then cuts each wire in the FFC to a specified length according to the length of each electrical connection point (that is, the position of the signal acquisition terminal), and then folds the wire to connect to the corresponding signal acquisition terminal. This configuration of CCS assembly can collect voltage signals of multiple battery cells in a battery module using a small number (for example, only one) of FFCs.

[0005] However, in the above patent document, if a signal acquisition terminal with a thermistor is used to collect the temperature signal of each battery cell, it will be difficult to realize the parallel operation of each thermistor. Specifically, the resistance of the thermistor is generally determined by measuring the voltage at both ends of the thermistor, and then the temperature of the thermistor and the corresponding battery cell is obtained. Therefore, each thermistor needs to be connected to two wires (wire pairs). If the aforementioned wire pairs are provided by the same FFC, then multiple signal acquisition terminals with temperature acquisition functions correspond to each wire pair, that is, one FFC needs to provide multiple wire pairs for extracting temperature signals. In order to simplify the circuit layout, one of each wire pair needs to be connected in parallel (parallel), while the other is separated from each other. However, it is very difficult to connect multiple wires belonging to the same FFC but in different positions and avoid these wires from being mistakenly connected to other wires. Summary of the invention

[0006] The purpose of the present application is to solve at least one of the above-mentioned technical problems and to provide a CCS component and a battery module having the same.

[0007] In the first aspect, a CCS component is proposed, comprising:

[0008] a plurality of first signal acquisition terminals, the plurality of first signal acquisition terminals are used to be respectively coupled to a plurality of first battery cells of a battery module to respectively acquire voltage signals and temperature signals of the plurality of first battery cells, wherein the first signal acquisition terminals include a thermistor thermally coupled to the first battery cell, a first soldering pad, and a second soldering pad and a third soldering pad respectively connected to both ends of the thermistor, the first soldering pad is used to lead out the voltage signal, and the second soldering pad and the third soldering pad are used to lead out the temperature signal;

[0009] A first FFC, wherein the first FFC includes a plurality of pairs of first conductive wires, one of each pair of the first conductive wires is welded to the first pad of the corresponding first signal acquisition terminal, and the other is welded to the second pad;

[0010] The second FFC includes a plurality of second conductive lines, each of which is soldered to the third pad of the corresponding first signal terminal.

[0011] In some possible implementations, the following further includes:

[0012] A plurality of second signal acquisition terminals, the plurality of second signal acquisition terminals are used to be respectively coupled to a plurality of second battery cells of the battery module to respectively acquire voltage signals of the plurality of second battery cells, wherein the second signal acquisition terminals include a fourth pad, the fourth pad is used to lead out the voltage signal of the second battery cell;

[0013] The first FFC further includes a plurality of third wires, and the plurality of third wires are respectively connected to the fourth pads of the plurality of second signal acquisition terminals.

[0014] In some possible implementations, the first signal acquisition terminal includes a PCB board and a metal sheet connected to the PCB board, the metal sheet is used to be welded to a conductive bar connected to an electrode of the first battery cell, and the first soldering pad, the second soldering pad, the third soldering pad and the thermistor are all arranged on the PCB board.

[0015] In some possible implementations, the plurality of second conductive lines are conductively connected to each other.

[0016] In some possible implementations, the conductive connection between the plurality of second wires is achieved by welding the flat wire to the second FFC.

[0017] In some possible implementations, the second FFC is obtained by processing an FFC precursor, wherein the FFC precursor is formed into a flat, elongated shape and comprises:

[0018] A first end and a second end disposed opposite to each other in the length direction of the FFC primary body;

[0019] A plurality of wire precursors respectively defining the plurality of second wires, the plurality of wire precursors being arranged spaced apart in a width direction of the FFC precursor, and each of the wire precursors extending from the first end to the second end in the length direction; and

[0020] An insulating coating covering the plurality of second conductive wire primaries;

[0021] Wherein, the processing includes:

[0022] Cutting a slit in the insulating coating between adjacent wire bodies, wherein the slit extends in the length direction but does not penetrate the first end and the second end at the same time;

[0023] Folding a portion of a first wire preliminary body among the plurality of wire preliminary bodies to a side of the first end opposite to the second end, and bending the first wire preliminary body substantially vertically at the side opposite to the second end, so that the bent portion of the first wire preliminary body leads to the corresponding first signal acquisition terminal;

[0024] A portion of a second wire element among the plurality of wire elements is bent substantially vertically between the first end and the second end, so that the bent portion of the second wire element is led to the corresponding first signal acquisition terminal.

[0025] In some possible implementations, a portion of the first wire body is folded toward the side away from the first end, with the vicinity of the first end as the center.

[0026] In some possible implementations, the processing further comprises:

[0027] The flat wire is welded near the first end, so that the flat wire connects the plurality of wire elements to each other in an electrically conductive manner.

[0028] In a second aspect, a battery module is proposed, comprising:

[0029] The CCS component as described in the first aspect; and

[0030] The plurality of first battery cells are stacked and arranged.

[0031] In some possible implementations, the following further includes:

[0032] A plurality of second battery cells are arranged between the plurality of first battery cells.

[0033] According to the CCS component provided in the present application, the temperature signals collected by multiple first signal acquisition terminals are centrally led out by the same FFC, i.e., the second lead, and then one end of each thermistor on each first signal acquisition terminal can be easily electrically connected to each other with the help of the second FFC, thereby easily achieving parallel wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0035] Figure 1 It is a schematic top view of a portion of a battery module provided in an embodiment of the present application.

[0036] Figure 2 yes Figure 1 Schematic diagram of the top view of the CCS components.

[0037] Figure 3 yes Figure 2 An enlarged schematic diagram of the X1 portion.

[0038] Figure 4 yes Figure 2 Schematic diagram of the structure of the second FFC.

[0039] Figure 5 yes Figure 4 An enlarged schematic diagram of the X2 portion.

[0040] Figure 6 yes Figure 4 An enlarged schematic diagram of the X3 portion.

[0041] Figure 7 It is a schematic diagram of the structure of the FFC primary body.

[0042] Figure 8 yes Figure 7 An enlarged schematic diagram of the X4 portion.

[0043] Fig. 9 yes Figure 7 An enlarged schematic diagram of the X5 portion.

[0044] Fig.10 It is a flowchart of the manufacturing method of the CCS component provided in the embodiment of the present application.

[0045] Description of reference numerals:

[0046] DL-length direction, DW-width direction;

[0047] 1000-battery module;

[0048] 100-CCS module, 200-battery stack;

[0049] 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M, 1N, 1O, 1P, 1Q - battery cells;

[0050] 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I - conductive bars;

[0051] 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I-signal acquisition terminals;

[0052] 31-PCB board, 32-metal sheet, 33, 34, 35, 37-soldering pads, 36-thermistor;

[0053] 4-First FFC;

[0054] 4a, 4b-first conductor;

[0055] 4c-third conductor;

[0056] 5- Second FFC;

[0057] 5a, 5b, 5c, 5d, 5e - second conductor;

[0058] 6-FFC primary body;

[0059] 6L-first end, 6R-second end;

[0060] 61-insulation coating, 62-cutting;

[0061] 6a, 6b, 6c, 6d, 6e-conductor primary body;

[0062] 7-Insulation bracket;

[0063] 8- Flat copper wire. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described below in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application. It can be understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0065] In the description of this application, if there are terms such as "first", "second", etc., they are only used to distinguish the objects described and do not have any order or technical meaning. Therefore, an object defined as "first", "second", etc. may explicitly or implicitly include one or more of the objects, and, for example, the term "first element" itself does not mean the existence of the "second element", and the term "second element" itself does not mean the existence of the "first element". In addition, "one" or "a" and similar words do not indicate a quantity limitation, but rather indicate the existence of at least one, and "multiple" means not less than two.

[0066] In the description of the present application, the terms “including”, “having” indicate the existence of the described features, numbers, operations, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, numbers, operations, elements and / or their combinations.

[0067] In the description of the present application, reference to "one embodiment" or "some embodiments" etc. means that one or more embodiments of the present application include a particular feature, structure or characteristic described in conjunction with the embodiment. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in the present specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0068] Figure 1 This is a schematic diagram of a portion of a battery module 1000 provided in an embodiment of the present application in a top view, and for the sake of clarity, Figure 1 The insulating bracket 7 described later is omitted. The battery module 1000 includes a plurality of battery cells 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M, 1N, 1O, 1P, 1Q and a CCS assembly 100. A plurality of battery cells 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M, 1N, 1O, 1P, 1Q are stacked and arranged in a straight line to form a battery stack 200. The CCS assembly 100 is disposed on one side of the battery stack 200 and is used to collect relevant signals of the battery cells 1A, 1C, 1E, 1G, 1I, 1K, 1M, 1O, 1Q, and transmit the collected signals to a battery management system BMS which is omitted from the diagram. In addition, Figure 1 The two-dot chain line in denoted by FIG. 1 represents a cutoff line, which cuts off another part of the battery module 1000 and omits the depiction of the other part.

[0069] Please combine again Figure 2 and Figure 3 , Figure 2 Shows Figure 1A portion of the CCS assembly 100, Figure 3 Show that Figure 2 The CCS assembly 100 includes an insulating bracket 7, a plurality of conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I, a plurality of signal acquisition terminals 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, a first FFC4 and a second FFC5.

[0070] The insulating bracket 7 is formed into a substantially rectangular plate-like configuration and can be made of plastic. In addition, the insulating bracket 7 has a plurality of holes arranged at intervals along its length side, and a plurality of conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I are spaced apart from each other and cover these holes respectively, and the conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I are fixed to the insulating bracket 7 by screws not shown in the figure. Since the holes are covered and blocked by the conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I, the holes cannot be seen. Figure 1 and Figure 2 In the Figure 1 In the figure, the back side (the side facing the paper) of the rightmost conductive bar 2I is welded to the positive electrode column of the rightmost battery cell 1Q, thereby functioning as the total positive conductive bar of the battery module 1000, and the back side of each of the remaining conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, and 2H is respectively welded to the positive electrode column and the negative electrode column of two adjacent battery cells (for example, the positive electrode column of battery cell 1A and the negative electrode column of battery cell 1B) to electrically connect the adjacent battery cells in series. It can be seen that the aforementioned holes provide connection channels between the conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I and the electrode columns of the battery cells 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M, 1N, 1O, 1P, 1Q, so that the backs of the conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I can contact and weld with the electrode columns of the battery cells 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M, 1N, 1O, 1P, 1Q. Figure 1 and Figure 2 Some other conductive bars that are opposite to the multiple conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, and 2I shown in the figure are omitted. One of the other conductive bars is welded to the negative electrode column of the rightmost battery cell 1A, thereby functioning as the total negative conductive bar of the battery module. Each of the remaining conductive bars is respectively welded to the positive electrode column and the negative electrode column of two adjacent battery cells (for example, the positive electrode column of the battery cell 1B and the negative electrode column of the battery cell 1C) to electrically connect the adjacent battery cells in series. Figure 1 The conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, and 2I shown in the figure have substantially the same structure and function, and therefore, their description is omitted.

[0071] A plurality of signal acquisition terminals 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, and 3I are respectively welded to a plurality of conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I, and 2J, so as to respectively acquire signals of corresponding battery cells via corresponding conductive bars.

[0072] Specifically, the signal acquisition terminals 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, and 3I each include a PCB board 31 and a metal sheet 32 ​​connected to the PCB board. For the signal acquisition terminals 3B, 3D, 3F, and 3H, a thermistor 36 and three pads 33, 34, and 35 are provided on the PCB board, wherein the pad 33 is connected to the metal sheet 32, and the pad 34 and the pad 35 are respectively connected to the two ends of the thermistor 36, and the thermistor 36 is thermally coupled with the corresponding battery cells 1A, 1C, 1G, 1K, and 1O via the corresponding conductive bars 2A, 2B, 2D, 2F, and 2H. For the signal acquisition terminals 3A, 3C, 3E, 3G, and 3I, no thermistor is provided on the PCB board 31, but a pad 37 connected to the metal sheet 32 ​​is provided.

[0073] It can be understood that the resistance of the thermistor 36 will change according to the change of its temperature. The pad 34, the thermistor 36 and the pad 35 form a series path. By measuring the voltage across the thermistor 36, that is, the voltage drop between the pad 34 and the pad 35, the current resistance of the thermistor 36 can be determined, and then the temperature information of the thermistor 36 and the corresponding battery cell can be determined.

[0074] More specifically, the metal sheets 32 of the signal acquisition terminals 3C, 3E, 3G, and 3I are welded to the conductive bars 2C, 2E, 2G, and 2I respectively, and the conductive bars 2C, 2E, 2G, and 2I are welded to the electrode columns of the battery cells 1E, 1I, 1M, and 1Q respectively. Therefore, the signal acquisition terminals 3C, 3E, 3G, and 3I can respectively collect the voltage signals of the battery cells 1E, 1I, 1M, and 1Q via the conductive bars 2C, 2E, 2G, and 2I, and use the welding pads 37 to lead out the voltage signals of the battery cells 1E, 1I, 1M, and 1Q. The metal sheets 32 of the signal acquisition terminals 3A, 3B, 3D, 3F, and 3H are welded to the conductive bars 2A, 2B, 2D, 2F, and 2H respectively, and the conductive bars 2A, 2B, 2D, 2F, and 2H are welded to the electrode posts of the battery cells 1A, 1C, 1G, 1K, and 1O respectively, and the thermistor 36 is thermally coupled to the battery cells 1A, 1C, 1G, 1K, and 1O via the conductive bars 2A, 2B, 2D, 2F, and 2H. The conductive bars 3A, 3B, 3D, 3F, and 3H respectively connect the battery cells 1A, 1C, 1G, and 1K , 1O are transferred to the thermistor 36 of the signal acquisition terminals 3A, 3B, 3D, 3F, 3H. Therefore, the signal acquisition terminals 3A, 3B, 3D, 3F, 3H can respectively collect the voltage signal and temperature signal of the battery cells 1A, 1C, 1G, 1K, 1O through the conductive bars 2A, 2B, 2D, 2F, 2H, and use the pads 33 to lead out the voltage signal of the battery cells 1A, 1C, 1G, 1K, 1O, and use the pads 34, 35 to lead out the temperature signal of the battery cells 1A, 1C, 1G, 1K, 1O.

[0075] The first FFC 4 includes multiple pairs of first wires 4a, 4b and multiple third wires 4c. One 4a of each pair of first wires 4a, 4b is soldered to the pad 33 of the corresponding signal acquisition terminal 3A, 3B, 3D, 3F, 3H, and the other 4b is soldered to the pad 34. Multiple third wires 4c are respectively soldered to the pads 37 of the signal acquisition terminals 3A, 3B, 3D, 3F, 3H.

[0076] The second FFC 5 includes a plurality of second wires 5a, 5b, 5c, 5d, 5e, and each of the second wires 5a, 5b, 5c, 5d, 5e is soldered to the pads 35 of the corresponding signal terminals 3A, 3C, 3E, 3G, 3I.

[0077] Thus, the first FFC4 can utilize the first wire 4a and the third wire 4c thereon to further lead out the voltage signals of the battery cells 1A, 1C, 1E, 1G, 1I, 1K, 1M, 1O, and 1Q from the pads 33 and 37 of the signal acquisition terminals 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, and 3I, and the first FFC4 and the second FFC5 can cooperate to further lead out the temperature signals of the battery cells 1A, 1C, 1G, 1K, and 1O from the pads 34 and 35 of the signal acquisition terminals 3A, 3B, 3D, 3F, and 3H. Through such a design, the temperature signals collected by the signal collection terminals 3A, 3B, 3D, 3F, and 3H are collectively led out by the same FFC, namely the second FFC5, and then the second FFC5 can be used to easily electrically connect one end (corresponding to the pad 35) of each thermistor 36 on the signal collection terminals 3A, 3B, 3D, 3F, and 3H, thereby realizing parallel connection. Figure 1 When the battery modules 1000 shown constitute a battery pack with a larger capacity, the second FFCs 5 of the battery modules 1000 can be easily connected to each other, thereby achieving a larger range of parallel connection.

[0078] A flat copper wire 8 (an example of a flat conductive wire) extending in the width direction of the second FFC5 is welded to the second FFC5, so that the aforementioned plurality of second conductive wires 5a in the second FFC5 are conductively connected to each other by the flat copper wire 8. In this way, by connecting a plurality of flat copper wires 8 together, a plurality of second FFC5 and a plurality of thermistors 36 on the battery modules 1000 can be connected in parallel.

[0079] Next, see Fig.10 Combined with Figures 1 to 9 The present application also provides a method for manufacturing the CCS assembly 100, the method comprising:

[0080] S101, provide an insulating bracket 7, a plurality of conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I, a plurality of signal collection terminals 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I and an FFC body 6. Among them, each conductive bar 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I, 2J is installed on the insulating bracket 7 by screws, and each signal collection terminal 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I is welded to the conductive bar 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I respectively.

[0081] As mentioned above, in practice, the conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, and 2H can be used to connect adjacent battery cells in the battery module 1000 to achieve series connection of battery cells, and the conductive bar 2I can be used to connect the positive pole of the battery cell 1Q in the battery module 1000, so as to function as a total positive conductive bar. Therefore, the signal acquisition terminals 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, and 3I are respectively coupled to the battery cells 1A, 1C, 1E, 1G, 1I, 1K, 1M, 1O, and 1Q of the battery module via the conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, and 2I to respectively acquire the relevant signals of the battery cells 1A, 1C, 1E, 1G, 1I, 1K, 1M, 1O, and 1Q. More specifically, the signal acquisition terminals 3A, 3B, 3D, 3F, and 3H can respectively collect the voltage signals and temperature signals of the battery cells 1A, 1C, 1G, 1K, and 1O via the conductive bars 2A, 2B, 2D, 2F, and 2H, and the signal acquisition terminals 3C, 3E, 3G, and 3I can respectively collect the voltage signals of the battery cells 1E, 1I, 1M, and 1Q via the conductive bars 2C, 2E, 2G, and 2I.

[0082] The second FFC 5 is obtained by processing the FFC primary body 6 (see S103 to S105 described later for details). Figure 7 Such an FFC precursor 6 is shown, and the FFC precursor can be purchased directly from the market. Figure 7 As shown, the FFC precursor 6 is formed into a flat elongated shape, which includes a first end 6L and a second end 6R arranged opposite to each other in the length direction DL of the FFC precursor 6, a plurality of wire precursors 6a, 6b, 6c, 6d, 6e respectively defining the aforementioned plurality of second wires 5a, 5b, 5c, 5d, 5e, and an insulating coating 61 covering the plurality of second wire precursors 6a, 6b, 6c, 6d, 6e, wherein the plurality of wire precursors 6a, 6b, 6c, 6d, 6e are arranged spaced apart in the width direction DW of the FFC precursor 6, and each of the wire precursors 6a, 6b, 6c, 6d, 6e extends from the first end 6L to the second end 6R along the length direction DL.

[0083] S102, soldering the rectangular copper wire 8 to a position near the first end 6L, so that the conductor elements 6a, 6b, 6c, 6d, 6e are electrically connected to each other.

[0084] S103, cutting a slit 62 on the insulating coating 61 between adjacent wire primaries (for example, wire primaries 6a and 6b), wherein the slit 62 extends in the length direction DL but does not penetrate the first end 6L and the second end 6R at the same time.

[0085] By cutting slits 62 on the insulating film 61 between adjacent wire precursors, the parts corresponding to the slits 62 of the wire precursors 6a, 6b, 6c, 6d, 6e that were originally bound together by the insulating film 61 can be separated from each other, and because the slits 62 do not penetrate the first end 6L and the second end 6R at the same time, these wire precursors 6a, 6b, 6c, 6d, 6e remain connected at the parts without the slits 62, thereby maintaining the integrity of the FFC to a certain extent.

[0086] S104, fold a portion of the conductor body 6a, 6e to the side of the first end 6L that is opposite to the second end 6R ( Figure 7 The left side of the first end 6L in the middle), and bend the wire bodies 6a, 6e roughly vertically on the away side so that the bent parts of the wire bodies 6a, 6e are led to the corresponding signal collection terminals 3A, 3B, and the bent parts of the wire bodies 6a, 6e are welded to the welding pads 35 of the signal collection terminals 3A, 3B.

[0087] S105, bend a portion of the wire bodies 6b, 6c, 6d approximately vertically between the first end 6L and the second end 6R so that the bent portions of the wire bodies 6b, 6c, 6d are led to the signal terminals 3D, 3F, 3H, and weld the bent portions of the wire bodies 6b, 6c, 6d to the soldering pads 35 of the signal acquisition terminals 3D, 3F, 3H.

[0088] In some embodiments, after the wire precursors 6b, 6c, and 6d are vertically bent, a portion of the bent portion of the wire precursors 6b, 6c, and 6d needs to be cut off so that the ends of the bent portions are exactly located at the signal terminals 3D, 3F, and 3H; however, for the wire precursors 6a and 6e, by selecting an appropriate length of the FFC precursor 6 and selecting an appropriate folding position, after the wire precursors 6a and 6e are vertically bent, the ends of the bent portions of the two are exactly located at the signal terminals 3A and 3B, thereby eliminating the need to cut off the bent portions of the two, thereby saving materials.

[0089] It can be understood that by folding a portion of the wire bodies 6a, 6e to the opposite side of the first end 6L opposite to the second end 6R, and bending the wire bodies 6a, 6e on the opposite side to lead to the signal acquisition terminals 3A, 3B and welded, and at the same time bending a portion of the wire bodies 6b, 6c, 6d between the first end 6L and the second end 6R to lead to the signal terminals 3D, 3F, 3H, the material of the FFC body 6 is fully utilized, which helps to save the material (length) of the FFC body 6, and further reduce the material cost of the FFC body 6 and the CCS assembly 100.

[0090] exist Figure 7In the embodiment, a part of the wire precursor 6a, 6e is folded to the side of the first end 6L opposite to the second end 6R with the vicinity of the first end 6L as the center. In this way, the material (length) of the FFC precursor 6 can be further saved.

[0091] Please review Figure 1 Combined with Figure 7 After the battery module 1000 is formed, the first end 6L of the original FFC precursor 6 is roughly located in the middle of the length dimension of the battery module 1000 (or the battery stack 200), and the number of wire precursors 6a and 6e on the side away from the first end 6L is roughly equal to the number of wire precursors 6b, 6c, and 6d between the first end 6L and the second end 6R - the difference between the two generally does not exceed 1.

[0092] When the CCS assembly 100 is assembled to the side of the battery stack 200 to form a battery module 1000, the length direction of the second FFC5 (corresponding to the length direction DL of the FFC primary body 6) is consistent with the stacking direction of multiple battery cells 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M, 1N, 1O, 1P, 1Q, the arrangement direction of multiple signal acquisition terminals 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, and the arrangement direction of multiple conductive bars 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2I.

Claims

1. A CCS assembly (100), characterized in that: include: A plurality of first signal acquisition terminals (3A, 3B, 3D, 3F, 3H), the plurality of first signal acquisition terminals (3A, 3B, 3D, 3F, 3H) being used to be respectively coupled to a plurality of first battery cells (1A, 1C, 1G, 1K, 1O) of a battery module (1000) so as to respectively acquire voltage signals and temperature signals of the plurality of first battery cells (1A, 1C, 1G, 1K, 1O), wherein the first signal acquisition terminals (3A, 3B, 3D, 3F, 3H) comprise a thermistor (36) thermally coupled to the first battery cells (1A, 1C, 1G, 1K, 1O), a first soldering pad (33), a second soldering pad (34) and a third soldering pad (35) respectively connected to two ends of the thermistor (36), the first soldering pad (33) being used to lead out the voltage signal, and the second soldering pad (34) and the third soldering pad (35) being used to lead out the temperature signal; A first FFC (4), the first FFC (4) comprising a plurality of pairs of first conductive wires (4a, 4b), one (4a) of each pair of the first conductive wires (4a, 4b) being soldered to the first soldering pad (33) of the corresponding first signal acquisition terminal (3A, 3B, 3D, 3F, 3H), and the other (4b) being soldered to the second soldering pad (34); A second FFC (5), wherein the second FFC (5) comprises a plurality of second conductive wires (5a, 5b, 5c, 5d, 5e), each of the second conductive wires (5a, 5b, 5c, 5d, 5e) being soldered to the third soldering pad (35) of the corresponding first signal terminal (3A, 3B, 3D, 3F, 3H).

2. The CCS assembly according to claim 1, characterized in that: Also includes: a plurality of second signal acquisition terminals (3C, 3E, 3G, 3I), the plurality of second signal acquisition terminals (3C, 3E, 3G, 3I) being used to be respectively coupled to a plurality of second battery cells (1E, 1I, 1M, 1Q) of the battery module (1000) so as to respectively acquire voltage signals of the plurality of second battery cells (1E, 1I, 1M, 1Q), wherein the second signal acquisition terminals (3C, 3E, 3G, 3I) include a fourth soldering pad (37), and the fourth soldering pad (37) is used to lead out the voltage signals of the second battery cells (1E, 1I, 1M, 1Q); The first FFC (4) further comprises a plurality of third wires (4c), and the plurality of third wires (4c) are respectively connected to the fourth pads (37) of the plurality of second signal acquisition terminals (3C, 3E, 3G, 3I).

3. The CCS assembly according to claim 1, characterized in that: The first signal acquisition terminal (3A, 3B, 3D, 3F, 3H) comprises a PCB board (31) and a metal sheet (32) connected to the PCB board, the metal sheet (32) being used for welding to a conductive row (2A, 2B, 2D, 2F, 2H) connected to the electrodes of the first battery cells (1A, 1C, 1G, 1K, 1O), and the first soldering pad (33), the second soldering pad (34), the third soldering pad (35) and the thermistor (36) are all arranged on the PCB board (31).

4. The CCS assembly according to claim 1, characterized in that: The plurality of second conductive lines (5a, 5b, 5c, 5d, 5e) are conductively connected to one another.

5. The CCS assembly according to claim 4, characterized in that: The conductive connection between the plurality of second conductive wires (5a, 5b, 5c, 5d, 5e) is achieved by welding the flat conductive wire (8) to the second FFC (5).

6. The CCS assembly according to any one of claims 1 to 5, characterized in that: The second FFC (5) is obtained by processing the FFC primary body (6), wherein the FFC primary body (6) is formed into a flat and long shape and comprises: A first end (6L) and a second end (6R) are arranged opposite to each other in the length direction (DL) of the FFC primary body (6); a plurality of wire precursors (6a, 6b, 6c, 6d, 6e) respectively defining the plurality of second wires (5a, 5b, 5c, 5d, 5e), the plurality of wire precursors (6a, 6b, 6c, 6d, 6e) being arranged in a spaced relationship along a width direction (DW) of the FFC precursor (6), and each of the wire precursors (6a, 6b, 6c, 6d, 6e) extending from the first end (6L) to the second end (6R) along the length direction (DL); and an insulating coating (61) covering the plurality of wire primaries (6a, 6b, 6c, 6d, 6e); Wherein, the processing includes: Cutting a slit (62) on the insulating coating (61) between adjacent conductive wire bodies (6a, 6b; 6b, 6c; 6c, 6d; 6d, 6e), wherein the slit (62) extends in the length direction (DL) but does not penetrate through the first end (6L) and the second end (6R) at the same time; Folding a portion of a first wire primary body (6a, 6e) among the plurality of wire primary bodies (6a, 6b, 6c, 6d, 6e) to a side of the first end (6L) that is opposite to the second end (6R), and bending the first wire primary body (6a, 6e) substantially vertically on the side that is opposite to the second end (6R), so that the bent portion of the first wire primary body (6a, 6e) is led to the corresponding first signal acquisition terminal (3A, 3B); A portion of a second wire precursor (6b, 6c, 6d) among the plurality of wire precursors (6a, 6b, 6c, 6d, 6e) is bent approximately vertically between the first end (6L) and the second end (6R) so that the bent portion of the second wire precursor (6b, 6c, 6d) is led to the corresponding first signal acquisition terminal (3D, 3F, 3H).

7. The CCS assembly according to claim 6, characterized in that: A portion of the first conductive wire primary body (6a, 6e) is folded in half toward the side away from the first end (6L) with a position near the first end (6L) as the center.

8. The CCS assembly according to claim 6, characterized in that: The processing also includes: A flat wire (8) is welded near the first end (6L), so that the flat wire (8) electrically connects the plurality of wire precursors (6a, 6b, 6c, 6d, 6e) to each other.

9. A battery module (1000), characterized in that: include: The CCS assembly (100) according to any one of claims 1 to 8; as well as The plurality of first battery cells (1A, 1C, 1G, 1K, 1O) are stacked and arranged.

10. The battery module according to claim 9, characterized in that: Also includes: A plurality of second battery cells (1E, 1I, 1M), wherein the plurality of second battery cells (1E, 1I, 1M) are arranged between the plurality of first battery cells (1A, 1C, 1G, 1K, 1O).

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