Energy storage battery module

Abstract

The application discloses a kind of energy storage battery module, including the battery pack of multiple electric core composition, upper and lower wire harness isolation plate and BMS module;Wire harness isolation plate is equipped with the electric core fixed groove corresponding with electric core, and built-in input / output pole aluminum bar is connected with BMS module by electric core state sampling line;BMS module is further connected with input / output pole aluminum bar negative terminal by soft aluminum bar BMS positive terminal, and input / output pole aluminum bar positive terminal and BMS negative terminal are used as the positive and negative input / output of entire module.This application uses multiple electric core composition battery pack to cooperate input / output pole aluminum bar to realize electric core series-parallel connection group to meet energy storage and power supply requirements, introduces electric core state sampling line to facilitate BMS module to realize the state acquisition and performance monitoring of each electric core, also introduces soft aluminum bar to further realize the power-on work of overall module, overall while meeting the electric gap safety requirement of electric core, ensure battery pack capacity, performance requirement and structural stability.

Description

[0001] This case is a divisional application based on the invention patent filed on May 31, 2023, with application number 2023106382865 and titled "A Symmetrical Distributed Integrated Energy Storage Battery Module". Technical Field

[0002] This invention relates to the field of energy storage battery technology, and in particular to an energy storage battery module. Background Technology

[0003] In recent years, with the continuous development of energy storage technology, customers have not only demanded higher energy storage capacity from energy storage batteries, but also faced increasingly complex application scenarios. Therefore, current energy storage batteries typically require customized designs to meet the diverse needs of various applications.

[0004] Current practices are basically based on specific system designs according to customer requirements for series and parallel connection methods or low-voltage / high-voltage system adaptation needs, which cannot meet the requirements of various electrical box internal installation conditions. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an energy storage battery module that meets the safety requirements of electrical clearance between battery cells while ensuring the capacity, performance requirements and structural stability of the battery pack.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] An energy storage battery module includes a battery pack composed of multiple battery cells, upper and lower wiring harness isolation plates, and a BMS module; the wiring harness isolation plate has a battery cell fixing slot corresponding to the battery cell, and has an input / output electrode aluminum bar connected to the BMS module through a battery cell status sampling line; the BMS module also connects the positive terminal of the BMS to the negative terminal of the input / output electrode aluminum bar through a soft aluminum bar, and uses the positive terminal of the input / output electrode aluminum bar and the negative terminal of the BMS as the positive and negative input / output of the entire module.

[0008] The beneficial effects of this invention are as follows: This invention provides an energy storage battery module, which uses a battery pack composed of multiple cells and an input / output electrode aluminum bar to realize the cells in series and parallel connection to meet the requirements of energy storage and power supply. A cell status sampling line is introduced so that the BMS module can realize the status acquisition and performance monitoring of each cell. A soft aluminum bar is also introduced to further realize the power-on operation of the whole module. The whole module ensures the battery pack capacity, performance requirements and structural stability while meeting the electrical clearance safety requirements of the cells. Attached Figure Description

[0009] Figure 1 This is an overall structural diagram of an energy storage battery module according to an embodiment of the present invention;

[0010] Figure 2 This is an exploded view of an energy storage battery module according to an embodiment of the present invention;

[0011] Figure 3 This is a schematic diagram of the structure of the upper wire harness isolation plate and insulating sheet in an energy storage battery module;

[0012] Figure 4 This is a schematic diagram of the structure of the upper wire harness isolation plate in an energy storage battery module;

[0013] Figure 5 This is a schematic diagram of the structure of the lower wiring harness isolation plate in an energy storage battery module.

[0014] Figure 6 This is a schematic diagram of the aluminum bar distribution in the upper wire harness separator of an energy storage battery module.

[0015] Figure 7 This is a schematic diagram of the aluminum bar distribution in the lower wiring harness separator of an energy storage battery module.

[0016] Figure 8 This is a top view of the upper wiring harness isolation plate in an energy storage battery module;

[0017] Figure 9 This is a schematic diagram of the horizontal installation of an energy storage battery module.

[0018] Figure 10 This is a schematic diagram of the longitudinal installation of an energy storage battery module.

[0019] Figure 11 This is a schematic diagram of another angle of an energy storage battery module.

[0020] Label Explanation:

[0021] 1. Battery pack; 11. Cylindrical battery cells;

[0022] 2. Wiring harness isolation plate; 21. Series-parallel aluminum bar; 22. Input / output aluminum bar; 221. Positive terminal of aluminum bar; 222. Negative terminal of aluminum bar; 23. Aluminum bar fixing slot; 24. Cell fixing slot; 241. Terminal slot; 25. Cell status sampling line; 26. Upper wiring harness sampling bus; 27. Lower wiring harness sampling bus; 28. Horizontal through hole; 29. ​​Vertical through hole; 20. Countersunk hole;

[0023] 3. BMS module; 31. BMS mounting plate; 32. Transmission harness; 33. Multi-path branch line; 34. Flexible aluminum bus; 35. BMS negative terminal; 36. BMS positive terminal;

[0024] 4. Insulating sheet. Detailed Implementation

[0025] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Please refer to Figures 1 to 11 An energy storage battery module includes a battery pack and wire harness isolation plates respectively assembled at the upper and lower ends of the battery pack and a BMS module on one side.

[0027] The battery pack consists of 2 n It consists of cylindrical cells arranged vertically in a matrix, where n is a positive integer greater than or equal to 2;

[0028] The upper and lower wire harness isolation plates are each provided with multiple series-parallel aluminum bars for connecting the cylindrical battery cells in series and parallel, and a pair of input / output aluminum bars are led out from one of the wire harness isolation plates. The input / output aluminum bars are also connected to the BMS module for control.

[0029] As can be seen from the above description, the beneficial effects of the present invention are as follows: the battery cells constituting the battery pack are cylindrical cells arranged symmetrically in a matrix, and the cylindrical cells are connected in series and parallel with the output electrode aluminum bar to form a battery pack that meets the requirements of energy storage and power supply. The overall battery module is compact and symmetrical in size, which meets the requirements of various internal installation conditions of the battery box. At the same time, in order to improve the performance of the battery module, a BMS module is added to manage each cell, which effectively improves the performance of the energy storage battery.

[0030] Furthermore, the spacing between any two adjacent cylindrical cells is 2-4 mm;

[0031] The cylindrical battery cells are connected in parallel to form a battery cell group through the series-parallel aluminum bars;

[0032] Multiple sets of the aforementioned cells are sequentially connected in series and parallel through the aforementioned aluminum bars to form the battery pack.

[0033] As described above, the spacing between each pair of cylindrical cells in the matrix distribution is limited to 2~4mm to meet the electrical clearance safety requirements of the cells. At the same time, the cells are connected in parallel in pairs, and then the parallel cell groups are connected in series to ensure the capacity and performance requirements of the battery pack.

[0034] Furthermore, the cylindrical battery cell is a 23Ah 3.2V battery cell, and the number of the cylindrical battery cells is 32;

[0035] The 32 cylindrical cells are arranged in a matrix of four rows and eight columns, and the cylindrical cells in the column are paired up to form a cell group, ultimately forming a battery pack of 2 parallel and 16 strings.

[0036] As described above, 32 cylindrical cells of 23Ah 3.2V are connected in parallel in pairs to form 16 cell groups, which are then connected in series to achieve an overall layout of 2 parallel and 16 series, thus obtaining a 46Ah 51.2V battery module, which meets the requirements of the most commonly used electrical systems and can be used in most electrical systems.

[0037] Furthermore, the wire harness isolation plate is provided with a cell fixing groove on the side facing the battery pack, which corresponds one-to-one with the number and position of the cylindrical cells;

[0038] The two ends of the cylindrical battery cell are respectively embedded in the battery cell fixing slots of the upper and lower wire harness isolation plates, and the battery cell fixing slots are provided with electrode slots for exposing the electrode posts of the cylindrical battery cell.

[0039] The wire harness isolation plate has an aluminum bar fixing slot on the side away from the battery pack for placing the series-parallel aluminum bars and the input / output aluminum bars, and the terminal slot opens to the aluminum bar fixing slot. The series-parallel aluminum bars and the input / output aluminum bars are installed in the aluminum bar fixing slot and contact the terminal of the cylindrical cell to realize the series-parallel connection and total input / output of the cylindrical cell.

[0040] As described above, the upper two wire harness isolation plates are provided with cell fixing slots for fixing the upper and lower ends of the cylindrical cells, which act as supports for cell assembly and ensure the structural stability of the overall battery pack. At the same time, the wire harness isolation plate is provided with aluminum bar fixing slots on the side away from the battery pack for placing aluminum bars connected in series and parallel and input / output electrode aluminum bars, which realizes front-to-back and left-to-right limit of aluminum bars, prevents aluminum bars from falling off, and further improves the structural stability of the battery pack.

[0041] Furthermore, the series-parallel aluminum bars and the input / output aluminum bars are all fixedly connected with cell status sampling lines by dispensing adhesive;

[0042] The cell status sampling lines on the upper and lower wire harness isolation plates are routed through the gaps between the aluminum bar fixing slots, and are respectively combined into the upper wire harness sampling bus and the lower wire harness sampling bus before being connected to the BMS module.

[0043] As described above, the aluminum bar fixing slots are not only used to place and fix the aluminum bars, but the gaps between the aluminum bar fixing slots can also be used to route the sampling lines that are glued to the aluminum bars that are in contact with each cylindrical cell, and to plan the routing of the sampling lines so that the BMS module can collect the status and monitor the performance of each cell, thereby improving the overall performance of the battery pack.

[0044] Furthermore, the BMS module also includes a relay harness;

[0045] The upper wire harness sampling bus and the lower wire harness sampling bus are connected to one end of the relay wire harness. The other end of the relay wire harness is a multi-way branch line with the same number of cell status sampling lines. The multi-way branch line connects multiple cell status sampling lines to the I / O port of the BMS chip in the BMS module.

[0046] As described above, the individual cell status sampling lines of each cell are routed and aggregated into a single sampling bus, which is then connected to the BMS module. To enable the BMS module to manage each cell individually, an intermediate wiring harness is added to branch out multiple lines from the aggregated sampling bus, each corresponding to a cell status sampling line, and connect them to the I / O pins of the BMS chip. This allows the BMS module to monitor the status of each cell in real time, thereby improving the performance of the battery pack.

[0047] Furthermore, the BMS module also includes a soft aluminum bus;

[0048] One end of the soft aluminum bar is connected to the positive terminal of the BMS in the input / output terminal of the BMS module, and the other end is connected to the negative terminal of the aluminum bar in the input / output aluminum bar through a locking bolt.

[0049] As described above, in order to connect the input / output aluminum bars located at the top or bottom of the battery pack to the BMS module installed on the side of the battery pack, a soft aluminum bar is added. Its two ends are connected to the negative terminal of the input / output aluminum bar and the positive terminal of the BMS module's input / output terminal, respectively, enabling the BMS module to operate under the power of the battery pack. The remaining positive terminal of the input / output aluminum bar and the remaining negative terminal of the BMS module's input / output terminal can then serve as the positive and negative inputs / outputs of the entire energy storage battery module. This allows for connection to an external power source to charge and store energy, and connection to an external electrical load to supply power to that load.

[0050] Furthermore, the BMS module also includes a BMS mounting plate;

[0051] The BMS fixing plate is locked to the same side of the two wire harness isolation plates by an M3 insert nut;

[0052] The BMS module is detachably secured to the side of the BMS mounting plate facing away from the battery pack by screws, and both the positive and negative terminals of the BMS are located on the BMS mounting plate.

[0053] As described above, adding a BMS mounting plate as the mounting plate for the BMS module and using M3 insert nuts to install it on the battery pack side ensures the stable installation of the BMS module and prevents the BMS module from detaching from the battery pack.

[0054] Furthermore, it also includes insulating sheets;

[0055] The insulating sheet consists of two pieces, which are respectively fastened to the side of the two wire harness separators away from the battery pack by plastic rivets.

[0056] As described above, the insulating sheet can provide overall protection for the battery pack, isolate the wiring harness isolation plate from external contact, and effectively prevent the aluminum foil and sampling wires on the wiring harness isolation plate from coming into contact with the outside, thus avoiding the risk of short circuit.

[0057] Furthermore, the wire harness isolation plate has multiple through transverse holes on its front and rear sides;

[0058] Multiple through holes are provided in the middle of the upper and lower wire harness isolation plates along the axial direction of the cylindrical battery cell;

[0059] The transverse through hole and the longitudinal through hole are used for the long screw to pass through.

[0060] As described above, the horizontal and vertical through holes can be used with long screws to achieve horizontal and vertical installation of the entire battery module in the electrical box, meeting the installation requirements of different electrical boxes.

[0061] The present invention provides an energy storage battery module that is compatible with most electrical systems and meets the requirements of various electrical box installation conditions. The following description, in conjunction with specific embodiments, illustrates this:

[0062] Please refer to Figures 1 to 3 , Figures 5 to 7 Embodiment 1 of the present invention is as follows:

[0063] An energy storage battery module, such as Figure 1 As shown, it includes a battery pack 1 and wiring harness isolation plates 2 and a BMS module 3 on one side, which are respectively assembled at the upper and lower ends of the battery pack 1.

[0064] Battery pack 1 consists of 2 n It consists of 11 vertically arranged cylindrical battery cells 11 in a matrix distribution, where n is a positive integer greater than or equal to 2. In this embodiment, as... Figure 6 or Figure 7 As shown, there are 32 cylindrical cells 11, and the 32 cylindrical cells 11 are arranged in a matrix of four rows and eight columns. At the same time, the interval between any two adjacent cylindrical cells 11 is 3 mm. In other similar embodiments, the interval between cells is limited to 2 to 4 mm to meet the electrical clearance safety requirements of the cells.

[0065] For example Figure 6 or Figure 7As shown, multiple series-parallel aluminum bars 21 for connecting cylindrical battery cells 11 in series and parallel are provided on both the upper and lower wire harness isolation plates 2, and a pair of input / output aluminum bars 22 are led out from one of the wire harness isolation plates 2. In this embodiment, a pair of input / output aluminum bars 22 are led out from the upper wire harness isolation plate 2, that is, as shown Figure 6 or Figure 2 As shown. The input / output aluminum bar 22 is also connected to the BMS module 3 for control, enabling precise control of the charging and discharging of the battery pack 1; at the same time, the input / output aluminum bar 22 can also be connected to other devices to realize the input of electrical energy (charging the battery pack 1) and the output of electrical energy (powering user equipment).

[0066] In this embodiment, cylindrical cells 11 are connected in parallel in pairs via series-parallel aluminum bars 21 to form a cell group. Multiple cell groups are then connected in series via series-parallel aluminum bars 21 to form battery pack 1. This method of connecting cells in pairs in parallel and then connecting these parallel cell groups in series ensures the capacity and performance requirements of battery pack 1. In this embodiment, 32 cylindrical cells 11 are arranged in a 4x8 matrix. Therefore, the cylindrical cells 11 arranged in pairs along the column direction form a cell group, ultimately forming a 2-parallel, 16-series battery pack 1. This embodiment uses 23Ah 3.2V cylindrical cells 11, achieving a 2-parallel, 16-series overall layout, resulting in a 46Ah 51.2V battery module that meets the requirements of most common electrical systems. This allows for widespread application in most electrical systems, shortens the design cycle, and reduces R&D costs.

[0067] In this embodiment, the cells constituting the battery pack 1 are cylindrical cells 11 arranged symmetrically in a matrix. With the help of series and parallel aluminum bars 21 and output electrode aluminum bars, the cylindrical cells 11 are connected in series and parallel to form the battery pack 1 to meet the requirements of energy storage and power supply. The overall battery module is compact and symmetrical in size, which meets the requirements of various internal installation conditions of the battery box. At the same time, in order to improve the performance of the battery module, a BMS module 3 is added to manage each cell, which effectively improves the performance of the energy storage battery.

[0068] Furthermore, in this embodiment, for example... Figure 1 As shown, the BMS module 3 also includes a flexible aluminum bus 34 and a BMS mounting plate 31. The BMS mounting plate 31 is configured as follows: Figure 3 and Figure 5The M3 insert nut shown is fastened to the same side of the two wire harness isolation plates 2. The BMS module 3 is then detachably fastened to the side of the BMS mounting plate 31 facing away from the battery pack 1 by ordinary screws. In order to connect the input / output terminal aluminum bar 22 located on the upper or lower wire harness isolation plate 2 (the upper wire harness isolation plate 2 is used as an example in this embodiment) to the BMS module 3 mounted on the side of the battery pack 1, a flexible aluminum bar 34 is also required. One end of the flexible aluminum bar 34 is connected to the input / output terminal of the BMS module 3. The positive terminal 36 of the BMS is connected, and the other end is connected to the negative terminal 222 of the input / output aluminum bar 22 through a locking bolt, so that the BMS module 3 can be powered on and operated under the power supply of the battery pack 1. The remaining positive terminal 221 of the input / output aluminum bar and the remaining negative terminal 35 of the BMS in the input / output terminal of the BMS module 3 can be used as the positive and negative input / output of the entire energy storage battery module. They can be connected to an external power source to realize the charging and energy storage of the battery pack 1, and connected to an external electrical load to realize the power supply of the external electrical load.

[0069] Please refer to Figure 4 and Figure 5 Embodiment two of the present invention is as follows:

[0070] An energy storage battery module, based on the above embodiment one, in this embodiment, as follows: Figure 5 As shown, the wire harness isolation plate 2 has a cell fixing groove 24 on the side facing the battery pack 1, which corresponds to the number and position of the cylindrical cells 11. The two ends of the cylindrical cells 11 are respectively embedded in the cell fixing grooves 24 of the upper and lower wire harness isolation plates 2, and the cell fixing grooves 24 are provided with pole slots 241 for exposing the poles of the cylindrical cells 11.

[0071] At the same time, such as Figure 4 As shown, the wire harness isolation plate 2 is provided with an aluminum bar fixing groove 23 on the side away from the battery pack 1 for placing the series-parallel aluminum bars 21 and the input / output aluminum bars 22. In this embodiment, the terminal slot 241 leads to the aluminum bar fixing groove 23. The series-parallel aluminum bars 21 and the input / output aluminum bars 22 are connected in series and parallel and make contact with the terminal of the cylindrical cell 11 by being installed in the aluminum bar fixing groove 23, thereby realizing the series-parallel connection and total input / output of the cylindrical cell 11.

[0072] In this embodiment, the upper two wire harness isolation plates 2 are provided with cell fixing grooves 24 for fixing the upper and lower ends of the cylindrical cells 11, which act as supports for cell assembly and ensure the structural stability of the overall battery pack 1; at the same time, the side of the wire harness isolation plate 2 away from the battery pack 1 is provided with aluminum bar fixing grooves 23 for placing aluminum bars 21 and input / output electrode aluminum bars 22 in series and parallel, so as to limit the front, back and left and right of the aluminum bars, prevent the aluminum bars from falling off, and further improve the structural stability of the battery pack 1.

[0073] Please refer to Figure 1 and Figure 8 Embodiment 3 of the present invention is as follows:

[0074] An energy storage battery module, based on the above embodiment one or embodiment two, in this embodiment, as follows: Figure 8 As shown, cell status sampling lines 25 are fixedly connected to the series-parallel aluminum bar 21 and the output aluminum bar by adhesive dispensing. The cell status sampling lines 25 on the upper and lower wiring harness isolation plates 2 are routed through the gap between the aluminum bar fixing slots 23, and are respectively aggregated into the upper wiring harness sampling bus 26 and the lower wiring harness sampling bus 27 before being connected to the BMS module 3, i.e. Figure 1 As shown.

[0075] In this embodiment, the aluminum bar fixing slot 23 is not only used to place and fix the aluminum bar, but the gap between each aluminum bar fixing slot 23 can also be used to route the sampling line connected by adhesive on the aluminum bar that contacts each cylindrical cell 11, and to plan the routing of the sampling line so that the BMS module 3 can realize the status acquisition and performance monitoring of each cell, thereby improving the overall performance of the battery pack 1.

[0076] Meanwhile, in this embodiment, for example... Figure 1 As shown, the BMS module 3 also includes a relay harness 32. The upper harness sampling bus 26 and the lower harness sampling bus 27 are both connected to one end of the relay harness 32. The other end of the relay harness 32 is a multi-path branch line 33, the same number as the cell status sampling lines 25. Each multi-path branch line 33 connects one of the cell status sampling lines 25 to the I / O port of the BMS chip in the BMS module 3. That is, after the individual cell status sampling lines 25 of each cell are routed and combined into a single sampling bus, they are connected to the BMS module 3. To enable the BMS module 3 to manage each cell individually, a relay harness 32 is added, which branches off the combined sampling bus and connects the multi-path branch lines 33, corresponding one-to-one with the cell status sampling lines 25, to the I / O pins of the BMS chip. This allows the BMS module 3 to monitor the status of each cell in real time, improving the performance of the battery pack 1.

[0077] Please refer to Figure 1 , Figure 4 and Figure 5 , Figures 9 to 11 Embodiment four of the present invention is as follows:

[0078] An energy storage battery module, based on any one of the embodiments one to three above, in this embodiment, as follows: Figure 1 As shown, it also includes an insulating sheet 4. The insulating sheet 4 consists of two pieces and is respectively fastened to the side of the two wire harness separators 2 away from the battery pack 1 by plastic rivets.

[0079] In this embodiment, the insulating sheet 4 can provide overall protection for the battery pack 1, isolate the wire harness isolation plate 2 from the outside world, and effectively prevent the aluminum bar and sampling line on the wire harness isolation plate 2 from coming into contact with the outside world, thus avoiding the risk of short circuit.

[0080] In addition, such as Figure 4 As shown, the wire harness isolation plate 2 has multiple through-holes 28 on its front and rear sides; simultaneously combined with Figure 5 As shown, multiple through holes 29 are provided in the middle of the upper and lower wire harness isolation plates 2 along the axial direction of the cylindrical battery cell 11; in this embodiment, both the transverse through holes 28 and the longitudinal through holes 29 are used for long screws to pass through, so that the overall battery module is as shown. Figure 9 The horizontal mounting shown and as Figure 10 The longitudinal installation shown is inside the electrical box; in this embodiment, the long screw used for longitudinal or transverse installation can be locked on the wire harness isolation plate 2 by means of an M5 insert nut.

[0081] In addition, to ensure the structural stability of the upper and lower wiring harness isolation plates 2 after being assembled with the middle battery pack 1, such as Figure 11 As shown, several countersunk holes 20 are also provided on the upper and lower wire harness isolation plates 2, which are also used for long screws to pass through. The layout and number of countersunk holes 20 can be set according to actual needs. In this embodiment, taking the two countersunk holes 20 in the middle of the entire battery module, two at the front and two at the back, and two on the left and two on the right as an example, the long screws pass through the countersunk holes 20 to lock the upper wire harness isolation plate 2, battery pack 1 and lower wire harness isolation plate 2 into a stable whole structure. The long screws used to lock the upper wire harness isolation plate 2, battery pack 1 and lower wire harness isolation plate 2 into one unit can be locked on one side of the wire harness isolation plate 2 by insert blind hole nuts.

[0082] In summary, the energy storage battery module provided by the present invention has the following beneficial effects:

[0083] 1. The cylindrical cells that make up the battery pack are arranged in a matrix symmetrical pattern so that the overall layout and size meet the requirements of various internal installation conditions of the battery box;

[0084] 2. The overall battery module can be installed horizontally or vertically in the battery box, which improves the versatility of the battery module, facilitates the widespread promotion and application of the 2P16S battery module, and shortens the design cycle and reduces R&D costs.

[0085] 3. The aluminum bar fixing slots limit the series and parallel aluminum bars and the input / output electrode aluminum bars, making the aluminum bar arrangement more compact and improving the overall stability and safety of the battery module.

[0086] 4. The 2-4mm cell gap layout allows the overall battery module to meet various safety certification requirements, and the overall module layout is more regular.

[0087] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An energy storage battery module, characterized in that, The system includes a battery pack composed of multiple battery cells, upper and lower wiring harness isolation plates, and a BMS module. The wiring harness isolation plate has a battery cell fixing slot corresponding to the battery cell and a built-in input / output electrode aluminum bar connected to the BMS module via a battery cell status sampling line. The BMS module also connects the positive terminal of the BMS to the negative terminal of the input / output electrode aluminum bar via a soft aluminum bar, using the positive terminal of the input / output electrode aluminum bar and the negative terminal of the BMS as the positive and negative input / output of the entire module. The wire harness isolation plate has a built-in series and parallel aluminum bar, and the cell status sampling line is fixedly connected to the series and parallel aluminum bar and the input / output electrode aluminum bar by dispensing adhesive; The outer side of the wire harness isolation plate is provided with aluminum bar fixing grooves. The cell status sampling line runs through the gap between the aluminum bar fixing grooves and is respectively connected to the upper wire harness sampling bus and the lower wire harness sampling bus after being combined. The BMS module also includes a relay harness; the relay harness combines the upper harness sampling bus and the lower harness sampling bus into a multi-path branch line with the same number of cell status sampling lines, and the multi-path branch line is used to connect multiple cell status sampling lines to the I / O port of the BMS chip in the BMS module.

2. The energy storage battery module according to claim 1, characterized in that, Multiple battery cells are cylindrical and arranged in a matrix, with each pair of cells in each column forming a cell group.

3. The energy storage battery module according to claim 1, characterized in that, The soft aluminum bar is connected to the negative end of the input / output aluminum bar using a locking bolt.

4. The energy storage battery module according to claim 3, characterized in that, The BMS module also includes a BMS mounting plate; The BMS fixing plate is locked to the same side of the two wire harness isolation plates by an M3 insert nut; The BMS module is detachably secured to the side of the BMS mounting plate facing away from the battery pack by screws, and both the positive and negative terminals of the BMS are located on the BMS mounting plate.

5. The energy storage battery module according to claim 1, characterized in that, It also includes insulating sheets; The insulating sheet consists of two pieces, which are respectively fastened to the side of the two wire harness separators away from the battery pack by plastic rivets.

6. The energy storage battery module according to claim 2, characterized in that, The wire harness isolation plate has multiple through-holes on its front and rear sides. Multiple through holes are provided in the middle of the upper and lower wire harness isolation plates along the axial direction of the cylindrical battery cell; The transverse through hole and the longitudinal through hole are used for the long screw to pass through.

7. The energy storage battery module according to claim 6, characterized in that, Several countersunk holes for the long screw to pass through are correspondingly opened on the upper and lower wire harness isolation plates.

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