Soft-pack battery module

Abstract

A soft-pack battery module includes a bottom case, a switching component, a switching circuit, and a plurality of soft-pack batteries. The switching component includes a plurality of single-cell switching members, and the plurality of single-cell switching members are all disposed on the bottom case. In one of the single-cell switching members, the single-cell switching member includes a substrate, a brush, and two contact blocks. The substrate is provided with a switching hole, and the brush is disposed in the switching hole. The switching circuit includes two forward guide pieces and two reverse guide pieces, and the two forward guide pieces and the two reverse guide pieces are all accommodated in the substrate. The rotating brush is used to electrically connect the soft-pack battery to the two reverse guide pieces or the two forward guide pieces. One of the single-cell switching members can be individually opened to replace the soft-pack battery with an abnormality below it. The plurality of battery cells are electrically connected to each other through the contact blocks, and there is no need to disassemble the entire battery module. A series circuit and a parallel circuit are provided in the single-cell switching member, and the connection state between the soft-pack batteries is adjusted by rotating the brush.

Description

Technical Field

[0001] The present invention relates to a battery, and particularly to a soft-pack battery module. Background Art

[0002] A battery module can be understood as an intermediate product between a battery cell and a pack formed by combining lithium-ion battery cells in series and parallel and installing a monitoring and management device for individual battery cells.

[0003] By connecting individual lithium battery cells in series and parallel with each other, the output power of the battery module can reach the rated value of the electrical appliance. When the lithium battery cells are connected in parallel, the output voltage of the resulting battery pack remains unchanged, while the capacity and output current are increased; further, when the battery packs are connected in series, the current of the battery module remains unchanged, while the voltage increases, so that the output current and output voltage of the battery module meet the usage requirements of the electrical appliance. That is, in order to meet the usage requirements of the electrical appliance, there are series and parallel connection relationships in the same battery module.

[0004] In order to obtain the target output capacitance and output current, it is necessary to connect individual battery cells in parallel to form multiple battery packs. In order to make the output voltage of the battery module reach the rated voltage of the electrical appliance, it is necessary to connect the battery packs in series.

[0005] During the assembly of the battery module, it is necessary to weld the positive and negative electrodes of the battery cells to the conductive sheets. After the assembly is completed, it is difficult to disassemble a single battery in the module, that is, the rework cost is relatively high. Especially for a soft-pack battery with the positive and negative tabs on the same side, during assembly, the battery is prone to be placed in the wrong orientation, resulting in errors in the series and parallel connection process of the battery module. Even if the reversed battery is detected, it takes a lot of time to disassemble and reassemble, which extremely affects the production efficiency of the battery module.

[0006] Therefore, how to optimize the structure of the existing battery module to make the maintenance of the battery module more flexible and convenient and the series and parallel connection process more concise is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a soft-pack battery module that is easy to install, convenient for debugging and subsequent maintenance.

[0008] The purpose of the present invention is achieved by the following technical solutions:

[0009] A soft-pack battery module, characterized in that it includes: a bottom box, a switching component, a switching circuit and a plurality of soft-pack batteries;

[0010] The plurality of soft-pack batteries are sequentially arranged in the bottom box, and the tabs of each soft-pack battery are exposed outside the bottom box;

[0011] The switching component includes a plurality of single switching members, and the plurality of single switching members are all disposed on the bottom box. In one of the single switching members, the single switching member includes a substrate, a brush, and two contact blocks. The substrate is disposed directly above the soft-pack battery, and the two contact blocks are respectively disposed at two ends of the substrate. A switching hole is formed at the middle position of the substrate, the brush is rotatably disposed in the switching hole, and the brush is electrically connected to the soft-pack battery;

[0012] The switching circuit includes two forward guide pieces and two reverse guide pieces. The two forward guide pieces and the two reverse guide pieces are all accommodated in the substrate. The two forward guide pieces are respectively electrically connected to the two contact blocks, and the two reverse guide pieces are respectively electrically connected to the two contact blocks. Rotating the brush is used to electrically connect the soft-pack battery to the two reverse guide pieces or the two forward guide pieces.

[0013] In one embodiment, the substrate includes a connecting member, an insulating frame, a top cover, and two annular metal sheets. The connecting member is installed on the bottom box and is located directly above one of the soft-pack batteries. The two annular metal sheets are installed on the connecting member. The positive electrode tab and the negative electrode tab of the soft-pack battery are respectively electrically connected to the two annular metal sheets. The insulating frame is installed on the connecting member. The two contact blocks are respectively disposed at two ends of the insulating frame. The switching hole is located at the central position of the insulating frame, and there is a gap between the contact block and the annular metal sheet. The top cover covers the insulating frame.

[0014] In one embodiment, the annular metal sheet includes a power connection portion and a ring body. The power connection portion is used for electrically connecting to the electrode tab, the ring body faces the switching hole, and the brush is in contact with the ring body.

[0015] In one embodiment, an isolation area is provided between the two ring bodies.

[0016] In one embodiment, two grooves and two groups of isolation grooves are formed on the insulating frame. The two grooves are respectively located at two ends of the insulating frame. The two groups of isolation grooves are respectively communicated with the two grooves, and the two isolation grooves are both communicated with the switching hole. The two contact blocks are respectively embedded in the two grooves. Each isolation groove is used for accommodating one reverse guide piece and one forward guide piece.

[0017] In one embodiment, the isolation groove includes a first installation groove and a second installation groove. There is a gap between the first installation groove and the second installation groove. The reverse guide piece is installed in the first installation groove, and the forward guide piece is installed in the second installation groove.

[0018] In one embodiment, the brush includes an insulating shaft and two metal brush pieces. The insulating shaft is rotatably disposed in the switching hole. The two metal brush pieces are spaced apart and mounted on the outer wall of the insulating shaft. The two metal brush pieces are respectively electrically connected to the positive electrode tab and the negative electrode tab of the soft-pack battery. Rotating the insulating shaft is used to drive the two metal brush pieces to be respectively electrically connected to the two reverse guide pieces or the two forward guide pieces.

[0019] In one embodiment, a cross-shaped groove is formed on the side surface of the insulating shaft away from the soft-pack battery.

[0020] In one embodiment, the reverse guide piece includes an arc-shaped contact portion and a transition portion. The arc-shaped contact portion faces the switching hole, and the transition portion is electrically connected to the contact block.

[0021] In one embodiment, docking sheet metal parts are provided at opposite ends of the contact block.

[0022] Compared with the prior art, the present invention has at least the following advantages:

[0023] 1. The switching assembly is composed of multiple single switching parts. One of the single switching parts can be separately opened to replace the soft-pack battery with an abnormality below it, without the need to disassemble the entire battery module.

[0024] 2. A series circuit and a parallel circuit are provided in the single switching part, and the connection state between each soft-pack battery is adjusted by rotating the brush.

[0025] 3. The multiple battery monomers are electrically connected to each other by being mutually attached through the contact block, without the need for welding, improving the production efficiency of the battery module and the loading and unloading efficiency during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of a soft-pack battery module in an embodiment of the present invention;

[0028] Figure 2 It is a schematic internal structure diagram of the switching assembly;

[0029] Figure 3 It is an exploded schematic diagram of the switching assembly in an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the cooperation between the carbon brush and two annular metal sheets in one of the switching components;

[0031] Figure 5 Schematic diagram of the structure of the carbon brush in an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of the distribution of the first mounting groove and the second mounting groove on the insulating frame;

[0033] Figure 7 Schematic diagram of the structure of the reverse guide piece;

[0034] Figure 8 Schematic diagram of the internal connection of the switching component in the parallel state of each soft-pack battery when the carbon brush is connected to the forward guide piece;

[0035] Figure 9 Schematic diagram of the internal connection of the switching component in the parallel state of each soft-pack battery when the carbon brush is connected to the reverse guide piece;

[0036] Figure 10 Schematic diagram of the internal connection of the switching component in the series state of each soft-pack battery when the carbon brush is connected to the reverse guide piece;

[0037] Figure 11 Schematic diagram of the internal connection of the switching component in the series state of each soft-pack battery when the carbon brush is connected to the forward guide piece. Detailed implementation manners

[0038] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] Please refer to Figure 1 , a pouch battery module 10 includes: a bottom case 100, a switching component 200, a switching circuit 300, and a plurality of pouch batteries 400. The plurality of pouch batteries 400 are accommodated in the bottom case 100. The switching component 200 encloses the bottom case 100 and is electrically connected to the pouch batteries 400 in the bottom case 100. The switching circuit 300 is disposed in the switching component 200. By rotating the brush in the switching component 200, the connection relationship between two adjacent pouch batteries 400 is changed, making the assembly of the battery module 10 more flexible and reducing the debugging and maintenance difficulty of the battery module 10.

[0042] Please refer to Figure 1 , the plurality of pouch batteries 400 are sequentially arranged in the bottom case 100, and the tabs of each pouch battery are exposed outside the bottom case 100; a plurality of mounting positions are provided on the bottom case 100, and each mounting position is used to accommodate one pouch battery 400.

[0043] Please refer to Figure 2 , the switching component 200 includes a plurality of single switching members 20. The plurality of single switching members 20 are all disposed on the bottom case 100, and each single switching member 20 is respectively located directly above a pouch battery 400, that is, one single switching member 20 is only used to enclose the space above one pouch battery 400. Thus, when performing maintenance, the single switching member 20 above the problematic pouch battery 400 can be individually removed without having to load and unload the entire pouch battery module 10.

[0044] Please refer to Figure 3 and Figure 4 , in one of the single switching members 20, the single switching member 20 includes a substrate 210, a brush 220, and two contact blocks 230. The substrate 210 is disposed directly above the pouch battery 400. The two contact blocks 230 are respectively disposed at both ends of the substrate 210. A switching hole 211 is formed at the middle position of the substrate 210. The brush 220 is rotatably disposed in the switching hole 211 and is electrically connected to the pouch battery 400. The contact blocks 230 of two adjacent single switching members 20 are mutually attached to electrically connect two adjacent pouch batteries 400. By rotating the brush 220, the pouch battery 400 is connected to the switching circuit 300 to enable two adjacent pouch batteries 400 to be connected in series or in parallel.

[0045] It should be noted that there are two independent conductive parts provided on the brush 220, and these two conductive parts are respectively electrically connected to the positive and negative electrodes of the soft-pack battery. When the brush 220 rotates, if one of the conductive parts is in conduction with the positive electrode of the soft-pack battery 400, the other conductive part is in conduction with the negative electrode of the soft-pack battery 400. That is to say, when the brush 220 is in an electrically connected state with the soft-pack battery 400, the polarity on the brush 220 is the same as the polarity of the soft-pack battery 400. For example, if the positive electrode tab of the soft-pack battery 400 is located on the left side of the brush 220 and the negative electrode tab is located on the right side of the brush 220, no matter how the brush 220 rotates, the left side of the brush 220 is always connected to the positive electrode of the soft-pack battery 400, and the right side of the brush 220 is always connected to the negative electrode of the soft-pack battery 400, and vice versa.

[0046] Please refer to Figure 1 and Figure 3 As shown in FIGS. and

[0046] , the switching circuit 300 includes two forward guide pieces 310 and two reverse guide pieces 320. The two forward guide pieces 310 and the two reverse guide pieces 320 are both accommodated in the substrate 210. The two forward guide pieces 310 are respectively electrically connected to the two contact blocks 230, and the two reverse guide pieces 320 are respectively electrically connected to the two contact blocks 230. The rotating brush 220 is used to electrically connect the soft-pack battery 400 to the two reverse guide pieces 320 or the two forward guide pieces 310. The two reverse guide pieces 320 are respectively located on both sides of the switching hole 211. When the brush 220 is rotated to be electrically connected to the two reverse guide pieces 320, the positive electrode tab and the negative electrode tab of the soft-pack battery 400 are respectively connected to the two reverse guide pieces 320, and are electrically connected to the adjacent two soft-pack batteries 400 through the two contact blocks 230. At this time, the positive electrode of this soft-pack battery is connected to the negative electrode of the adjacent soft-pack battery through the contact block 230, and the negative electrode of this soft-pack battery is connected to the positive electrode of the adjacent soft-pack battery through the contact block 230. That is, the connection relationship between this soft-pack battery and the adjacent two soft-pack batteries 400 is in series at this time.

[0047] Similarly, when the brush 220 is rotated to be electrically connected to the two forward guide pieces 310, the positive and negative electrode tabs of the soft-pack battery 400 are respectively connected to the two forward guide pieces 310. That is, the soft-pack battery 400 is electrically connected to the two contact blocks 230 through the two forward guide pieces 310. At this time, the electrodes of the two contact blocks 230 are opposite to those in the series connection state. That is, the positive electrode of this soft-pack battery 400 is connected to the positive electrode of the adjacent soft-pack battery 400, and the negative electrode of this soft-pack battery is connected to the negative electrode of the adjacent soft-pack battery 400. That is, the connection relationship between this soft-pack battery and the adjacent two soft-pack batteries 400 is in parallel at this time.

[0048] The connection method of the above-mentioned soft-pack battery module will be introduced below with reference to the accompanying drawings:

[0049] Please refer to Figure 8, in the figure, the negative tab of the soft-pack battery 400 is on the left side and the positive tab is on the right side. At this time Figure 8 The brush 220 of the switching component 200 located at the middle position contacts with the two positive guide pieces 310, so that the negative tab of the soft-pack battery is electrically connected to the contact block 230 on the left side in the figure through the positive guide piece 310, and the positive tab is electrically connected to the contact block 230 on the right side in the figure through the positive guide piece 310. That is, at this time, the electrode of the left contact block 230 on the switching component 200 is negative, and the electrode of the right contact block 230 is positive;

[0050] Among the two switching components 200 located above and below the above-mentioned switching component 200, the brush 220 contacts with the positive guide piece 310. That is, at this time, the electrodes of the left contact blocks 230 in the two switching components 200 above and below are both negative, and the electrodes of the right contact blocks 230 are both positive. In this way, the positive poles are connected to each other and the negative poles are connected to each other among the three soft-pack batteries, that is, the connection relationship among the three soft-pack batteries is in parallel;

[0051] Similarly, please refer to Figure 9 , if the brushes 220 of the three switching components 200 all rotate to contact with the reverse guide pieces 320, the electrodes of the left contact blocks 230 of the three switching components 200 are positive and the right ones are negative. At this time, the connection relationship of the three soft-pack batteries is also in parallel.

[0052] Please refer to Figure 10 , in the figure, the negative tab of the soft-pack battery 400 is on the left side and the positive tab is on the right side. At this time Figure 10 The brush 220 of the switching component 200 located at the middle position contacts with the two reverse guide pieces 320, so that the negative tab of the soft-pack battery is electrically connected to the contact block 230 on the right side in the figure through the reverse guide piece 320, and the positive tab is electrically connected to the contact block 230 on the left side in the figure through the reverse guide piece 320. That is, at this time, the electrode of the left contact block 230 on the switching component 200 is positive and the electrode of the right contact block 230 is negative;

[0053] At this time, among the two switching components 200 located above and below the above-mentioned switching component 200, the brush 220 contacts with the positive guide piece 310. That is, at this time, the electrodes of the left contact blocks 230 in the two switching components 200 above and below are both negative, and the electrodes of the right contact blocks 230 are both positive. In this way, the positive pole of the soft-pack battery 400 at the middle position is connected to the negative poles of the soft-pack batteries 400 above and below, and the negative pole is connected to the positive poles of the soft-pack batteries 400 above and below. That is, at this time, the connection relationship among the three soft-pack batteries 400 is in series.

[0054] Similarly, please refer to Figure 11If the brush 220 of the switching component 200 at the middle position contacts the two positive guide pieces 310, the electrode of the left contact block 230 is negative, and the electrode of the right contact block 230 is positive. The brushes 220 of the upper and lower switching components 200 contact the reverse guide pieces 320, that is, the motor of the left contact block 230 in the upper and lower switching components 200 is positive, and the electrode of the right contact block 230 is negative. The three soft-pack batteries 400 are also connected in series.

[0055] In summary, when the brushes 220 in two adjacent switching components 200 both contact the positive guide piece 310 / negative guide piece 320, the connection relationship between the soft-pack batteries 400 corresponding to the two adjacent switching components 200 is parallel. On the contrary, if the brush 220 of one switching component 200 contacts the positive guide piece 310 and the brush 220 of the other switching component 200 contacts the reverse guide piece 320, the connection relationship between the soft-pack batteries 400 corresponding to the two adjacent switching components 200 is series.

[0056] By rotating the brush 220, the connection relationship between adjacent soft-pack batteries 400 can be changed. In this way, even if the soft-pack batteries 400 are installed in the reverse direction, resulting in the opposite positions of the positive and negative electrode tabs, it can be adjusted by rotating the brush 220.

[0057] Please refer to Figure 3 As shown in the figure, the substrate 210 includes a connecting piece 212, an insulating frame 213, a top cover 214 and two annular metal sheets 215. The connecting piece 212 is installed on the bottom box 100 and is located directly above one soft-pack battery 400. The two annular metal sheets 215 are installed on the connecting piece 212. The positive electrode tab and the negative electrode tab of the soft-pack battery 400 are electrically connected to the two annular metal sheets 215 respectively. The insulating frame 213 is installed on the connecting piece 212. The two contact blocks 230 are respectively arranged at both ends of the insulating frame 213. The switching hole 211 is located at the central position of the insulating frame 213, and there is a gap between the contact block 230 and the annular metal sheet 215. The top cover 214 covers the insulating frame 213. The annular metal sheet 215 is used to connect the brush 220 and the positive electrode tab / negative electrode tab of the soft-pack battery 400.

[0058] Please refer to Figure 3 and Figure 4 As shown in the figure, the annular metal sheet 215 includes an electricity connection part 215a and a ring body 215b. The electricity connection part 215a is used to be electrically connected to the electrode tab. The ring body 215b faces the switching hole 211, and the brush 220 fits with the ring body 215b. And there is an isolation area 21 between the two ring bodies 215b. When assembling the switching component 200, the conductive part on the brush 220 is located in the isolation area 21, that is, at this time, the brush 220 is in a non-connected state with the soft-pack battery 400, thereby improving the safety performance of the soft-pack battery module 10.

[0059] Please refer to Figure 3 and Figure 6 , two grooves 213a and two groups of isolation grooves 213b are formed on the insulating frame 213. The two grooves 213a are respectively located at both ends of the insulating frame 213. The two groups of isolation grooves 213b are respectively communicated with the two grooves 213a, and both two isolation grooves 213b are communicated with the switching hole 211. Two contact blocks 230 are respectively embedded in the two grooves 213a. Each isolation groove 213b is used to accommodate a reverse guide piece 320 and a forward guide piece 310. The isolation groove 213b includes a first installation groove 213c and a second installation groove 213d. There is a gap between the first installation groove 213c and the second installation groove 213d. The reverse guide piece 320 is installed in the first installation groove 213c, and the forward guide piece 310 is installed in the second installation groove 213d.

[0060] Please refer to Figure 5 , the brush 220 includes an insulating shaft 221 and two metal brush pieces 222. The insulating shaft 221 is rotatably arranged in the switching hole 211. The two metal brush pieces 222 are spaced apart and installed on the outer wall of the insulating shaft 221. The two metal brush pieces 222 are respectively electrically connected to the positive electrode tab and the negative electrode tab of the soft-pack battery 400. Rotating the insulating shaft 221 is used to drive the two metal brush pieces 222 to be respectively electrically connected to the two reverse guide pieces 320 or the two forward guide pieces 310. The insulating shaft 221 is made of non-conductive material. The two metal brush pieces 222 are the conductive parts of the brush 220. The two metal brush pieces 222 are used to fit with the annular metal sheet 215 so that the soft-pack battery is electrically connected to the brush 220. When the insulating shaft 221 rotates, the two metal brush pieces 222 slide on the two annular metal sheets 215 respectively.

[0061] A cross groove 223 is formed on the side surface of the insulating shaft 221 away from the soft-pack battery 400. A screwdriver can be used in cooperation with the cross groove 223 to drive the insulating shaft 221 to rotate.

[0062] Please refer to Figure 7 , the reverse guide piece 320 includes an arc-shaped contact part 321 and a transition part 322. The arc-shaped contact part 321 faces the switching hole 211, and the transition part 322 is electrically connected to the contact block 230.

[0063] Docking sheet metal parts are arranged on the opposite ends of the contact block 230. The contact tightness between two adjacent switching components 200 is improved through the docking sheet metal parts, and it can be avoided that during the loading and unloading of the single switching part 20, the contact block 230 is worn and the contact between the contact blocks 230 between two adjacent single switching parts 20 is poor.

[0064] Compared with the prior art, the present invention has at least the following advantages:

[0065] 1. The switching component 200 is composed of multiple single switching parts 20. One of the single switching parts 20 can be individually opened to replace the abnormal soft-pack battery 400 below it, without the need to disassemble the entire battery module;

[0066] 2. A series circuit and a parallel circuit are provided inside the single switching part 20, and the connection state between each soft-pack battery 400 is adjusted by rotating the brush 220;

[0067] 3. The multiple battery monomers are electrically connected to each other through the contact blocks 230, without the need for welding, improving the production efficiency of the battery module and the loading and unloading efficiency during maintenance.

[0068] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A soft-pack battery module, characterized in that, Comprising: Multiple pouch cells, A bottom case, the multiple pouch cells are sequentially arranged in the bottom case, and the tabs of each pouch cell are exposed outside the bottom case. Multiple mounting positions are provided on the bottom case, and each mounting position is used to accommodate one pouch cell; A switching component, the switching component includes multiple single-switching members. The multiple single-switching members are all covered on the bottom case, and each single-switching member is respectively located directly above one pouch cell. In one of the single-switching members, the single-switching member includes a substrate, a brush, and two contact blocks. The substrate is covered directly above the pouch cell, the two contact blocks are respectively arranged at both ends of the substrate, a switching hole is opened at the middle position of the substrate, the brush is rotatably arranged in the switching hole, and the brush is electrically connected to the pouch cell; A switching circuit, the switching circuit includes two positive guide pieces and two negative guide pieces. The two positive guide pieces and the two negative guide pieces are all accommodated in the substrate. The two positive guide pieces are respectively electrically connected to the two contact blocks, and the two negative guide pieces are respectively electrically connected to the two contact blocks. Rotating the brush is used to electrically connect the pouch cell to the two negative guide pieces or the two positive guide pieces. The brush includes an insulating shaft and two metal brush pieces. The insulating shaft is rotatably arranged in the switching hole, the two metal brush pieces are spaced apart and installed on the outer wall of the insulating shaft, and the two metal brush pieces are respectively electrically connected to the positive tab and the negative tab of the pouch cell. Rotating the insulating shaft is used to drive the two metal brush pieces to be respectively electrically connected to the two negative guide pieces or the two positive guide pieces. A cross groove is opened on the side of the insulating shaft away from the pouch cell, and the contact blocks of two adjacent single-switching members are mutually attached.

2. The soft-pack battery module according to claim 1, characterized in that, The substrate includes a connecting member, an insulating frame, a top cover, and two annular metal sheets. The connecting member is installed on the bottom case and is located directly above one pouch cell. The two annular metal sheets are installed on the connecting member. The positive tab and the negative tab of the pouch cell are respectively electrically connected to the two annular metal sheets. The insulating frame is installed on the connecting member, and the two contact blocks are respectively arranged at both ends of the insulating frame. The switching hole is located at the center position of the insulating frame, and there is a gap between the contact block and the annular metal sheet. The top cover is covered on the insulating frame.

3. The soft-pack battery module according to claim 2, wherein The annular metal sheet includes a power connection part and a ring body. The power connection part is used to be electrically connected to the tab, and the ring body faces the switching hole, and the brush is in contact with the ring body.

4. The soft-pack battery module according to claim 3, wherein, There is an isolation area between the two ring bodies.

5. The soft-pack battery module according to claim 2, wherein, Two grooves and two groups of isolation grooves are opened on the insulating frame. The two grooves are respectively located at both ends of the insulating frame. The two groups of isolation grooves are respectively communicated with the two grooves, and both isolation grooves are communicated with the switching hole. The two contact blocks are respectively embedded in the two grooves, and each isolation groove is used to accommodate one negative guide piece and one positive guide piece.

6. The soft-pack battery module according to claim 5, characterized in that, The isolation groove includes a first installation groove and a second installation groove, there is a gap between the first installation groove and the second installation groove, the reverse guide piece is installed in the first installation groove, and the forward guide piece is installed in the second installation groove.

7. The soft-pack battery module according to claim 1, wherein The reverse guide piece includes an arc-shaped contact portion and a transition portion, the arc-shaped contact portion faces the switching hole, and the transition portion is electrically connected to the contact block.

8. The soft-pack battery module according to claim 1, wherein Docking sheet metal parts are provided at opposite ends of the contact block.

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