Assembly structure of battery module

Abstract

The present application relates to a kind of assembly structure of battery module, comprising: multiple battery modules, each battery module includes main body, positive tab and negative tab, with gap between adjacent battery modules, electrically conductive strip, for fixing and connecting adjacent battery modules together, fixed strip, wherein adjacent battery modules are connected by electrically conductive strip, multiple battery modules are fixedly connected by fixed strip, multiple battery modules are fixed by fixed strip and there is gap between each battery module, encapsulation strip, for pressing on two sides of multiple battery modules, wherein damping material is filled between encapsulation strip and multiple battery modules, bus bar, for connecting the tab of end battery module with total positive pole and total negative pole, and side plate, fixed to the both sides of battery module group formed by battery module, total positive pole and total negative pole of battery pack formed by multiple battery modules on side plate are used for output electric energy.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically to an assembly structure for a battery module. Background Technology

[0002] The statements in this section are provided only as background information relating to the invention and may or may not constitute prior art.

[0003] Rechargeable lithium-ion batteries have been used as power sources for a variety of stationary and portable applications. Their structure and electrochemical reaction mechanisms provide them with several excellent properties, including relatively high energy density, relatively low internal resistance, generally no memory effect compared to other types of rechargeable batteries (such as nickel-cadmium batteries), and low self-discharge rate. These characteristics make lithium-ion batteries the preferred power source for portable consumer electronics such as laptops and mobile phones. Lithium-ion batteries are also used as power sources for electric vehicles.

[0004] Typically, a lithium-ion battery comprises multiple battery modules or battery cells. Multiple battery modules constitute a battery pack. Each battery cell includes a main body, a positive electrode tab, and a negative electrode tab. The positive and negative electrode tabs extend outward from two opposite sides of the main body, respectively. For example, the positive electrode tab extends upward from the top side of the main body, while the negative electrode tab extends downward from the bottom side of the main body, and vice versa.

[0005] With the continuous promotion of battery technology, battery packs composed of battery modules have become a common energy source. Traditional battery module packs consist of multiple stacked battery modules and a frame that holds them together. However, existing battery module assembly structures suffer from drawbacks such as poor heat dissipation, poor shock resistance, unstable module mounting, and time-consuming and labor-intensive maintenance and replacement. Summary of the Invention

[0006] The features and advantages of the present invention will become apparent from the following detailed description of the optimal mode of carrying out the invention in conjunction with the accompanying drawings.

[0007] According to an embodiment of the present invention, an assembly structure of a battery module includes: multiple battery modules, each battery module including a body, a positive electrode tab and a negative electrode tab, wherein the positive electrode tab of each battery module in the middle is connected to the negative electrode tab of the battery module on the adjacent side, and the negative electrode tab is connected to the positive electrode tab of the battery module on the adjacent other side, wherein there is a gap between adjacent battery modules; a conductive strip for fixing adjacent battery modules together; a fixing strip, wherein adjacent battery modules are connected to each other by the conductive strip, and then multiple battery modules are fixed together by the fixing strip, wherein multiple battery modules are fixed side by side by the fixing strip and there is a gap between each battery module; an encapsulation strip for pressing against two sides of the multiple battery modules, wherein shock-absorbing material is filled between the encapsulation strip and the multiple battery modules; a busbar, wherein one electrode tab of the end battery module is connected to the busbar, the busbar connects the electrode tab of the end battery module and serves as the overall positive and overall negative electrode post; and side plates, which are disposed on both sides of the battery module group formed by the battery modules, wherein the side plates are provided with openings.

[0008] According to an embodiment of the present invention, the positive and negative electrode tabs of each battery module are bent into an L-shape in opposite directions. The bent tabs form a vertical portion that is in the same or parallel plane as the sheet-like battery module and a horizontal portion that is perpendicular to the plane of the battery module.

[0009] According to an embodiment of the present invention, the horizontal portion of the tab of the left battery module and the horizontal portion of the tab of the right battery module overlap in the following manner: the negative tab of the left battery module is above the positive tab of the right battery module; the negative tab of the left battery module is below the positive tab of the right battery module.

[0010] According to an embodiment of the present invention, the horizontal portion of the tab of the left battery module and the horizontal portion of the tab of the right battery module overlap in the following manner: the positive tab of the left battery module is above the negative tab of the right battery module; the positive tab of the left battery module is below the negative tab of the right battery module.

[0011] According to an embodiment of the present invention, the conductive strip has four through holes, and the positive and negative electrode tabs of the battery module also each have four through holes, located on the horizontal portions of the positive and negative electrode tabs respectively. When the tabs of adjacent battery modules overlap, their respective horizontal portions overlap each other, and the through holes on them are also aligned with each other. The conductive strip is placed on the horizontal portion of the outermost electrode tab and overlapped with it. The through holes of the conductive strip are aligned with the through holes of the two horizontal portions to form through holes. The conductive strip is fixed together with the two horizontal portions by means of the through holes and a threaded connection.

[0012] According to an embodiment of the present invention, three of the four perforations are fixedly used, leaving one perforation for fastening together with the fixing strip. The battery modules are interconnected by conductive strips, and then the middle battery modules are fixedly connected together by the fixing strip. The middle perforation of the four perforations is used, that is, the third or second perforation from the top. The end battery modules are connected to the fixing strip using the fourth perforation.

[0013] According to an embodiment of the present invention, the fixing strip is installed on two opposite sides in a symmetrical position, and multiple battery modules are fixed side by side by the fixing strip with gaps between them.

[0014] According to an embodiment of the present invention, the shock-absorbing material is EVA sponge material.

[0015] According to an embodiment of the present invention, the encapsulation strip is provided with three holes for three rods to pass through the holes to fix the encapsulation strip in place. The fixed encapsulation strip applies a clamping force to the battery module through a shock-absorbing material, thereby stably fixing the battery module in place.

[0016] According to an embodiment of the present invention, the side plate is provided with a plurality of holes for rods, bolts, wires and switches to pass through, and the rod that passes through the encapsulation strip passes through the holes on the side plate and is fixed therethrough.

[0017] According to an embodiment of the present invention, the conductive strip is fixed together with the electrode lug by a screw, the screw being made of copper for fixing and conducting electricity.

[0018] According to an embodiment of the present invention, one end of the busbar has a block-shaped protrusion that can be inserted into a corresponding hole on the side plate. The block-shaped protrusion may have a threaded hole for connecting to a wire to output electrical energy. The busbar body also has four holes, one or more of which are used to fix the busbar to the side plate.

[0019] According to an embodiment of the present invention, one side of the angle iron has two holes for fixing to a side plate by bolt connection, and the other side of the angle iron is fixedly connected to a fixing strip.

[0020] According to an embodiment of the present invention, one tab of the end battery module is L-shaped for connecting to the middle battery module, and the other tab of the end battery module is straight for connecting to the busbar. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way.

[0022] Figure 1a Projected views of various surfaces of the assembly structure of a battery module according to an embodiment of the present invention are shown.

[0023] Figure 1b A perspective view of the assembly structure of a battery module according to an embodiment of the present invention is shown.

[0024] Figure 2a This is a schematic diagram of the connection between two battery modules according to an embodiment of the present invention.

[0025] Figure 2b This is a schematic diagram showing the connection of multiple battery modules according to an embodiment of the present invention.

[0026] Figure 3a Projected views of various surfaces of the conductive strip according to an embodiment of the present invention are shown.

[0027] Figure 3b A perspective view of a conductive strip according to an embodiment of the present invention is shown.

[0028] Figure 4a Projected views of various surfaces of a fixing strip according to an embodiment of the present invention are shown.

[0029] Figure 4b A perspective view of a fixing strip according to an embodiment of the present invention is shown.

[0030] Figure 5a Projected views of various faces of the packaging strip according to an embodiment of the present invention are shown.

[0031] Figure 5b A perspective view of the packaging strip according to an embodiment of the present invention is shown.

[0032] Figure 6a Projected views of various surfaces of the side plate according to an embodiment of the present invention are shown.

[0033] Figure 6b A perspective view of the side panel according to an embodiment of the present invention is shown.

[0034] Figure 7a Projected views of various surfaces of a busbar according to an embodiment of the present invention are shown.

[0035] Figure 7b A perspective view of a busbar according to an embodiment of the present invention is shown.

[0036] Figure 8a Projected views of various faces of an angle iron according to an embodiment of the present invention are shown.

[0037] Figure 8b A perspective view of an angle iron according to an embodiment of the present invention is shown.

[0038] Figure 9 This is a schematic diagram of an optional end of a fixing strip according to an embodiment of the present invention. Detailed Implementation

[0039] The following description of the various variations is merely exemplary in nature and is in no way intended to limit the scope, application, or use of the invention.

[0040] Figure 1a and Figure 1b A battery assembly according to an embodiment of the present invention is shown. Figure 1a Projected views of various surfaces of the battery module assembly structure 1 according to an embodiment of the present invention are shown. Figure 1b A perspective view of the assembly structure 1 of a battery module according to an embodiment of the present invention is shown. Figure 1a and Figure 1b Multiple battery modules and their assembly structure are shown. Battery modules 10 are placed side-by-side, with adjacent modules in the middle positioned with opposite polarities and connected in series, as shown. Figure 2a As shown.

[0041] Reference Figure 2b From left to right, the first battery module 10a has a positive terminal on top and a negative terminal on the bottom; the second battery module 10b has a negative terminal on top and a positive terminal on the bottom, with the positive terminal on the bottom of the second battery module connected to the negative terminal on the bottom of the first battery module; the third battery module 10c has a positive terminal on top and a negative terminal on the bottom, with the negative terminal on the bottom of the third battery module connected to the positive terminal on the bottom of the fourth battery module; the fourth battery module 10d has a negative terminal on top and a positive terminal on the bottom, with the positive terminal on the bottom of the fourth battery module connected to the negative terminal on the bottom of the third battery module, and so on.

[0042] Refer again Figure 2a Each battery module includes a positive electrode tab and a negative electrode tab extending from both sides. The positive and negative electrode tabs are bent into L-shapes, and the positive and negative electrode tabs of each battery module extend in opposite directions. For example, for two adjacent battery modules 10a and 10b, the positive electrode tab 100 (upper part) of the left battery module 10a bends to the left, and the negative electrode tab 101 (lower part) bends to the right; the positive electrode tab 102 (lower part) of the right battery module 10b bends to the left, and the negative electrode tab 103 (upper part) bends to the right. The bent tabs form vertical portions 100a, 101a, 102a, and 103a that are in the same or parallel plane as the sheet-like battery module, and horizontal portions 100b, 101b, 102b, and 103b that are perpendicular to the plane of the battery module. The negative electrode tab 101 of the left battery module 10a is connected to the positive electrode tab 102 of the right battery module 10b. The connection can be made by overlapping the horizontal portion 101b of the negative electrode tab 101 with the horizontal portion 102b of the positive electrode tab 102. Figure 2a As shown, this is the connection between two battery modules.

[0043] For multiple battery modules, it can be like Figure 2b The connections are made as shown, with the positive and negative terminals of adjacent battery modules connected. That is, from left to right, the negative terminal 101 of the first battery module 10a is connected to the positive terminal 102 of the second battery module 10b, the negative terminal 103 of the second battery module 10b is connected to the positive terminal 104 of the third battery module 10c, the negative terminal 105 of the third battery module 10c is connected to the positive terminal 106 of the fourth battery module 10d, and so on. According to a preferred embodiment, the first, third, fifth, and seventh odd-numbered battery modules 10a, 10c, 10e, and 10g have their positive electrodes on top and negative electrodes on the bottom; the second, fourth, sixth, and eighth even-numbered battery modules 10b, 10d, 10f, and 10h have their negative electrodes on top and positive electrodes on the bottom. In this way, the negative electrodes of the odd-numbered battery modules are connected to the positive electrodes of the adjacent even-numbered battery modules, and the positive electrodes of the odd-numbered battery modules are connected to the negative electrodes of the adjacent even-numbered battery modules; or vice versa.

[0044] like Figure 2a and 2b As shown, the horizontal portion of the tab on the left battery module overlaps with the horizontal portion of the tab on the right battery module. For example, the horizontal portion of the negative tab on the left battery module may be above the horizontal portion of the positive tab on the right battery module. Other overlaps are also possible, such as the horizontal portion of the negative tab on the left battery module being below the horizontal portion of the positive tab on the right battery module. Alternatively, the horizontal portion of the positive tab on the left battery module may be above the horizontal portion of the negative tab on the right battery module, or the horizontal portion of the positive tab on the left battery module may be below the horizontal portion of the negative tab on the right battery module. Figure 2a and 2b Only one connection method is shown; various connection methods can be selected according to specific needs. Preferably, multiple battery modules are connected in a meandering "snake-like" series circuit. In a battery pack composed of multiple battery modules, the battery modules at both ends can be referred to as end battery modules, and the battery module between the two end battery modules can be referred to as intermediate battery modules.

[0045] The difference between the end battery module and the middle battery module is that the end battery module has two tabs. One tab is L-shaped, just like the middle battery module, and is used to connect to the middle battery module. The other tab of the end battery module can be straight and not bent, and is used to connect to the busbar, as will be described in detail later.

[0046] Figure 3a Projected views of various surfaces of a conductive strip according to an embodiment of the present invention are shown, and Figure 3b A perspective view of a conductive strip according to an embodiment of the present invention is shown. The conductive strip 20 is used to fix two adjacent battery modules together. Figure 3a and Figure 3b As shown, the conductive strip has four through holes 21, 22, 23, and 24. Similarly, the positive and negative tabs of the battery module each have four through holes, located on the horizontal portions of the positive and negative tabs, respectively. When the tabs of the two battery modules are overlapped, their respective horizontal portions overlap each other, and their through holes are aligned. The conductive strip is placed on and overlapped with the horizontal portion of the outermost tab, and the through holes of the conductive strip are aligned with the through holes of the two horizontal portions, forming a through hole. Bolts or screws can pass through this through hole to fix the conductive strip to the two horizontal portions together, for example, by using bolts and nuts. Other fastening methods can also be used, such as designing the through holes of each horizontal portion and the through holes of the conductive strip to include internal threads, so as to directly fix it with bolts or screws. Preferably, a copper screw 25 is used as a fastener for fixing and conducting electricity.

[0047] For secure fastening, three out of the four perforations are preferably used, leaving one perforation for fastening to the fastening strip 30. The fastening strip is as follows: Figure 4a and 4b As shown. Among them Figure 4a Projected views of various surfaces of the fixing strip according to an embodiment of the present invention are shown, and Figure 4b A perspective view of a fixing strip according to an embodiment of the present invention is shown. (Return to reference) Figure 1a and Figure 1b The adjacent battery modules 10 in the middle are connected in series by conductive strips 20, and then each battery module is fixed together by fixing strips 30. Preferably, the middle perforation of the four perforations is used, for example from... Figure 1a and 1b The third perforation from the top, through which... Figure 3b The conductive strip has a through hole 23. A second through hole or other through holes can also be used. Figure 1a and 1bOnly one mounting strip is shown; mounting strips are also mounted on the opposite side, preferably in a symmetrical position. The mounting strips secure the battery modules side-by-side with gaps between them. Specifically, the mounting strips can be C-shaped, meaning the width at both ends of the mounting strip is greater than the width of the main body, or that the two ends of the mounting strip have extended portions. A row of holes 35 is provided at the lower part of the main body of the mounting strip. These holes 35 are preferably aligned with the holes 23 of the conductive strip and the corresponding holes on the tabs of the battery modules, and are fixed together by threaded connections. Holes 36 and 37 are also provided at both ends of the mounting strip. These two holes are preferably aligned with the holes 24 of the conductive strip and the corresponding holes on the tabs of the battery modules, and are fixed together by threaded connections. An L-shaped tab of the end battery module is connected to the adjacent battery module in the same manner, and the straight tab of the end battery module is directly connected to the busbar.

[0048] Figure 5a Projected views of various faces of the packaging strip according to an embodiment of the present invention are shown, and Figure 5b A perspective view of a packaging strip according to an embodiment of the present invention is shown. The packaging strip 40 is used for, for example... Figure 1a and Figure 1b The positions shown are used to press against the two sides of the battery module. Shock-absorbing material, such as EVA foam, is filled between the encapsulation strip and the battery module. This shock-absorbing material secures the battery module in place and provides cushioning in the event of an impact; it also serves a flame-retardant function. Figure 1a and 1b As shown, gaps are left between multiple encapsulation strips to allow air circulation, thereby providing good thermal performance (facilitating heat dissipation or heating).

[0049] Continue to refer to Figure 5a and 5b The encapsulation strip has multiple holes, preferably three holes 41, 42, and 43. These holes are used to secure the encapsulation strip in place by passing multiple rods through them, which are placed side by side. The secured encapsulation strip applies a clamping force to the battery module through a shock-absorbing material, thereby stably fixing the battery module in place.

[0050] Alternatively, multiple encapsulation strips can be replaced with a single encapsulation plate. To provide good thermal performance, the single encapsulation plate can be perforated to form multiple strip-shaped gaps, which are aligned with the gaps between the battery modules, thereby improving heat dissipation or heating (e.g., when the battery needs to maintain a certain temperature in winter). Preferably, various shapes suitable for heat transfer can be used, such as multiple rectangles, multiple elongated shapes, multiple ellipses, multiple round holes, or other suitable shapes. The sealing plate can be connected to the side plate in various ways, such as bolted connections, snap-fit ​​connections, adhesive bonding, etc.

[0051] Figure 6a Projected views of various surfaces of the side plate according to an embodiment of the present invention are shown, and Figure 6b A perspective view of a side plate according to an embodiment of the present invention is shown. The side plate 50 is placed on both sides of a battery module assembly formed by the battery modules and has multiple openings for rods, bolts, wires, switches, etc., to pass through. (Continuing to refer to...) Figure 6a and Figure 6b And refer to Figure 1a and Figure 1b And 5a and 5b, the rods passing through the encapsulation strips pass through holes in the side plates and are fixed, for example, by threaded connection or other connection methods. Specifically, as described above, each encapsulation strip has three holes 41, 42 and 43. On one side, three rods pass through the holes of multiple encapsulation strips, and the three rods pass through the three holes 51, 52 and 53 in the side plate respectively and are fixed to the side plate. For example, the end of each rod has a thread, and the rod is fixed to the side plate by a nut and the thread on the rod. Preferably, the holes 51, 52 and 53 in the side plate may also have internal threads to connect with the external threads of the rod. Similarly, on the other side, three rods pass through the holes 54, 55 and 56 of multiple encapsulation strips and can be fixed to the side plate in the same way.

[0052] in addition, Figure 1a and 1b The diagram also shows the overall positive and negative terminals of the battery pack, which are respectively located on both sides of the assembly structure for outputting current. Specifically, the end battery module located at one end of the battery pack (e.g., the leftmost end) has two tabs. One tab (e.g., the negative tab) is connected to one tab (e.g., the positive tab) of the adjacent battery module (e.g., the second from the left). The other tab (e.g., the positive tab) of this end battery module is connected to a busbar 60, which is a component used to connect the tabs of the end battery module to the overall terminal. There is one busbar on each side of the battery pack, connected to the overall positive and negative terminals respectively, for outputting electrical energy. It should be understood that the polarities of the tabs connected to the busbars on both sides are opposite.

[0053] The structure of the busbar can be as follows Figure 7a and 7b As shown. Figure 7a Projected views of various surfaces of a busbar according to an embodiment of the present invention are shown, and Figure 7bA perspective view of a busbar according to an embodiment of the present invention is shown. As can be seen from the side view of the busbar, the side of the busbar can be L-shaped, i.e., it has a block-shaped protrusion 60a at one end of the busbar. This block-shaped protrusion can be inserted into a corresponding recess 59 on the side plate. The block-shaped protrusion can have a hole 65, such as a threaded hole, for connecting to a wire to output electrical energy. The body of the busbar also has four holes 61, 62, 63, and 64, which are aligned with four holes on a straight tab of the battery module at the end. The busbar can be fixed to the side plate using one or more of these aligned holes, for example, by bolting hole 62 and hole 57c on the side plate to align and fix them. The block-shaped protrusion can be square, rectangular, or other suitable shapes. The side plate has recesses for receiving the block-shaped protrusion, and the shapes of the two are matched.

[0054] The busbar is connected to the tabs of the end battery module. As mentioned above, one tab of the end electrode is straight and has four holes. The four holes on the tab of the end electrode are aligned with the four holes on the busbar to form four through holes. One or more of the four through holes can be selected for fixed connection.

[0055] Figure 8a Projected views of various faces of an angle iron according to an embodiment of the present invention are shown, and Figure 8b A perspective view of an angle iron according to an embodiment of the present invention is shown. Preferably, one side of the angle iron 70 has two holes for fixing to a side plate by bolts, and the other side of the angle iron is fixedly connected to a fixing strip. Specifically, refer to... Figure 1b , 4a And 8b, the two holes 73 and 74 on one side of the angle iron are aligned with the two holes 31 and 32 on one end of the fixing strip and connected by bolts. And refer to Figure 1b , 6a And 8b, the two holes 71 and 72 on the other side of the angle iron are aligned with the two holes 57a and 57b on one side plate and fixed to the side plate by bolts. Similarly, the other end of the fixing strip is fixed to the other side plate by the two holes 33 and 34 on the other end of the fixing strip and the two holes 58a and 58b on the other side plate.

[0056] Figure 9 This is a schematic diagram of the optional fixing strip end. The fixing strip end can be manufactured as one, two or more protrusions, and a groove is set at the corresponding position on the side plate. During the connection process, the protrusion of the fixing strip end can be inserted into the groove of the side plate, and the fixing strip is fixed to the side plate by snap-fit ​​connection.

[0057] The description of this invention is merely exemplary in nature, and any modifications that do not depart from the spirit of the invention should be included within the scope of the invention. These changes should not be considered as departing from the spirit and scope of the invention.

Claims

1. An assembly structure for a battery module, characterized in that, It includes: Multiple battery modules are provided, each extending in the yz plane and including a body, a positive electrode tab, and a negative electrode tab. The positive electrode tab of each battery module in the middle is connected to the negative electrode tab of the battery module on the adjacent side, and the negative electrode tab is connected to the positive electrode tab of the battery module on the adjacent side. There are gaps between adjacent battery modules. Multiple conductive strips (20), each extending along the z-direction, are used to securely connect adjacent battery modules together. A fixing strip (30) extends along the x-direction, wherein adjacent battery modules are interconnected by conductive strips, and then multiple battery modules are fixedly connected together by the fixing strip. The multiple battery modules are fixed side by side by the fixing strip and there are gaps between each battery module. An encapsulation strip (40) extending along the y-direction is used to press against two sides of multiple battery modules, wherein shock-absorbing material is filled between the encapsulation strip and the multiple battery modules. A busbar, wherein one tab of the end battery module is connected to the busbar, the busbar connects to the end battery module tab and serves as the overall positive terminal and the overall negative terminal, and Side plates (50) extending in the yz plane are disposed on both sides of the battery module assembly formed by the battery modules, and the side plates are provided with openings. The positive and negative electrodes of each battery module are bent into an L-shape in opposite directions. The bent electrodes form a vertical portion that is in the same or parallel plane as the sheet-like battery module and a horizontal portion that is perpendicular to the plane of the battery module. Each conductive strip has one first conductive strip through hole and three second conductive strip through holes. The positive and negative tabs of the battery module also each have one first tab through hole and three second tab through holes, located on the horizontal portions of the positive and negative tabs, respectively. When the positive and negative tabs of adjacent battery modules overlap, their respective horizontal portions overlap, and the first tab through holes and at least one second tab through hole are aligned with each other. The conductive strip is placed on and stacked on the horizontal portion of the outermost positive or negative tab. The first conductive strip through hole and at least one second conductive strip through hole of the conductive strip are aligned with the first tab through hole and at least one second tab through hole, respectively, forming a through first hole and at least one second hole. The conductive strip is fixed to the horizontal portions of the positive and negative tabs by threaded connection using the at least one second hole. The first hole is used to fasten to the fixing strip. The battery modules are connected to each other through the conductive strips, and then the intermediate battery modules are fixedly connected together by the fixing strips.

2. The assembly structure of the battery module as described in claim 1, characterized in that, The horizontal portion of the battery module's tab overlaps with the horizontal portion of the battery module's tab in the following manner: The negative terminal of the left battery module is above the positive terminal of the right battery module; The negative terminal of the battery module on the left is below the positive terminal of the battery module on the right.

3. The assembly structure of the battery module as described in claim 1, characterized in that, The horizontal portion of the tab on the left battery module overlaps with the horizontal portion of the tab on the right battery module in the following manner: the positive tab of the left battery module is on top of the negative tab of the right battery module. The positive terminal of the battery module on the left is below the negative terminal of the battery module on the right.

4. The assembly structure of the battery module as described in claim 1, characterized in that, The first conductive strip through hole is located in the middle of the three second conductive strip through holes, that is, the third or second through hole from the top.

5. The assembly structure of the battery module as described in claim 1, characterized in that, The fixing strips are installed on two opposite sides in a symmetrical position, and multiple battery modules are fixed side by side by the fixing strips with gaps between them.

6. The assembly structure of the battery module as described in claim 1, characterized in that, The shock-absorbing material is EVA sponge material.

7. The assembly structure of the battery module as described in claim 1, characterized in that, The encapsulation strip has three holes for three rods to pass through to secure it in place. The secured encapsulation strip applies pressure to the battery module through shock-absorbing material, thereby stably fixing the battery module in place.

8. The assembly structure of the battery module as described in claim 1, characterized in that, The side plate has multiple holes for rods, bolts, wires, and switches to pass through. The rod that passes through the encapsulation strip passes through the holes in the side plate and is fixed in place.

9. The assembly structure of the battery module as described in claim 1, characterized in that, The conductive strip is fixed to the electrode lug by screws made of copper for both fixing and conducting electricity.

10. The assembly structure of the battery module as described in claim 1, characterized in that, One end of the busbar has a block-shaped protrusion that can be inserted into a corresponding hole on the side plate. The block-shaped protrusion may have a threaded hole for connecting to a wire to output electrical power. The busbar body also has four holes, one or more of which are used to fix the busbar to the side plate.

11. The assembly structure of the battery module as described in claim 1, characterized in that, One side of the angle iron has two holes for fixing it to the side plate by bolts, and the other side of the angle iron is fixedly connected to the fixing strip.

12. The assembly structure of the battery module as described in claim 1, characterized in that, One tab of the end battery module is L-shaped, used to connect to the middle battery module, and the other tab of the end battery module is straight, used to connect to the busbar.

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