Battery fixing device and fixing module

Abstract

The application provides a battery fixing device and a fixing module, the battery fixing device comprises a rear cover and a support in which a plurality of battery cells are arranged, the upper end and the lower end of the rear cover are provided with a plurality of limiting grooves for fixing the battery cells and keeping a gap between adjacent battery cells, and the support is provided with a plurality of fixing holes for fixing with the support of another battery fixing device; the battery fixing device provided by the application is provided with the limiting grooves for fixing the battery cells and leaving a gap, so that the upper and lower battery cells are not directly stacked, the gap between the left and right battery cells is increased, the gap between the single battery cells is increased, the heat dissipation problem between the battery cells is solved, the increased gap also solves the battery cell expansion problem, the possibility that the battery cell opens the explosion-proof valve in advance due to insufficient expansion space is reduced, the safety and service life of the battery cell are improved, and in addition, the plurality of fixing holes on the support make the battery fixing module assembled by the battery fixing device a detachable module.

Description

Technical Field

[0001] This invention belongs to the field of communication energy storage backup power application technology, specifically relating to a battery fixing device and fixing module. Background Technology

[0002] With the development of the new energy vehicle industry and other related industries, the use of lithium batteries is becoming more and more widespread, and the structural requirements for battery packs are also becoming more and more stringent. The reliability of lithium battery packs directly affects the lifespan and safety performance of lithium batteries. When a large number of lithium batteries are in operation, heat dissipation becomes a critical factor affecting battery performance. Traditional battery modules are usually packaged in a compact manner to maximize space utilization, but heat dissipation is given less consideration.

[0003] For example, square aluminum-cased battery cells are typically assembled into modules through series and parallel connections, and then encapsulated in a casing. Currently, the assembly method for square aluminum-cased battery cells generally uses a simple stacking method, where the cells are in direct contact with each other through their outer casings (aluminum shells). This assembly method has the following problems: it is not conducive to the thermal management of the battery module and cells. As the charging and discharging time of the cells increases, the temperature of the battery module and cells rises, but heat dissipation cannot be effectively achieved, which reduces the lifespan of the cells to a certain extent and creates safety hazards. After long-term use, the cells within the battery module will expand and squeeze against each other. When multiple cells are stacked on top of each other, the gravity of the upper cells on the lower cells makes it difficult for the expansion stress of the lower cells to be effectively released, causing the cells to prematurely open their explosion-proof valves, thus leading to safety accidents. Summary of the Invention

[0004] The purpose of this invention is to provide a battery fixing device and fixing module to solve the technical problem that battery cells cannot effectively dissipate heat in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A battery fixing device includes a back cover and a bracket for inserting multiple battery cells. The upper and lower ends of the back cover are provided with multiple limiting grooves for fixing the battery cells and maintaining a gap between adjacent battery cells.

[0007] The bracket is provided with a plurality of fixing holes for fixing to each other with the bracket of another battery fixing device.

[0008] Furthermore, the fixing hole includes a first hole formed on the upper end of the end face of the bracket, and a second hole for fixing to the first hole on the bracket of another battery fixing device.

[0009] Furthermore, the lower end of the bracket end face is provided with a first protrusion and a second protrusion perpendicular to the bracket end face, and the fixing hole includes a third hole provided on the first protrusion and a fourth hole provided on the second protrusion, the third hole and the fourth hole being coaxial.

[0010] Furthermore, both the side plates of the bracket and the rear cover are provided with multiple heat dissipation holes.

[0011] Furthermore, the bracket has multiple explosion-proof valve ports in the middle of its end face, and battery cell outlet holes are provided above and below the explosion-proof valve ports. The bracket also has wire clamping grooves in the middle of its two side plates.

[0012] Furthermore, the bracket is provided with a protruding component for fixing the insulating plate, and the two side plates of the bracket are provided with a snap-fit ​​component for fixing to the bracket of another battery fixing device.

[0013] A battery fixing module includes multiple battery fixing devices as described above, and the multiple battery fixing devices are fixed to each other through the fixing holes.

[0014] Furthermore, it also includes a first hole and a second hole formed on the end face of the bracket, and a fixing piece for connecting the first hole and the second hole.

[0015] Furthermore, it also includes a third hole on the first protrusion at the lower end of the bracket end face and a fourth hole on the second protrusion, as well as a stud for connecting the third hole and the fourth hole.

[0016] Furthermore, it also includes multiple fixing baffles for securing the battery fixing device.

[0017] A battery module includes multiple battery cells and one or more battery fixing devices as described above.

[0018] The beneficial effects of the battery fixing device and fixing module provided by the present invention are as follows:

[0019] The battery fixing device includes a back cover and a bracket for inserting multiple battery cells. The back cover has multiple limiting grooves at its upper and lower ends for fixing the battery cells and maintaining a gap between adjacent cells. The bracket has multiple fixing holes for fixing to the bracket of another battery fixing device. The battery fixing device provided by this invention, by setting limiting grooves that fix the battery cells while leaving gaps, prevents direct stacking of upper and lower battery cells and increases the gap between left and right battery cells. This increases the gap between individual battery cells, thereby solving the heat dissipation problem between cells. The increased gap also solves the problem of cell expansion, reducing the possibility of premature activation of the explosion-proof valve due to insufficient expansion space, thus improving the safety and service life of the battery cells. Furthermore, the fixing holes on the bracket for fixing to other battery fixing devices make the assembled battery module a detachable module, facilitating the removal and replacement of a faulty fixing device or even a single battery cell. This reduces the impact of a faulty part on the entire battery module, making replacement simple, convenient, economical, and practical. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the battery fixing device provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the bracket described in an embodiment of the present invention;

[0023] Figure 3 These are side and front views of the bracket described in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the battery fixing module provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the battery fixing module provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of another assembly structure of the battery fixing module provided in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a battery module provided in an embodiment of the present invention.

[0028] The following are the labeling elements in the figure:

[0029] 1-Bracket; 2-Battery cell; 3-Limiting groove; 4-Rear cover; 5-Heat dissipation hole; 6-Explosion-proof valve port; 7-Battery cell cable outlet hole; 8-Cable slot; 9-First hole; 10-Second hole; 11-First protrusion; 12-Second protrusion; 13-Protrusion assembly; 14-Snap-on assembly; 15-Side panel fixing hole;

[0030] 16-Fixing plate; 17-Stud; 18-Fixing baffle; 19-Insulating plate. Detailed Implementation

[0031] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] Please see Figure 1This embodiment provides a battery fixing device, which will now be described. The battery fixing device includes a back cover 4 and a bracket 1 for inserting multiple battery cells 2. The back cover 4 has multiple limiting grooves 3 at its upper and lower ends for fixing the battery cells 2 and maintaining a gap between adjacent battery cells 2. The bracket 1 has multiple fixing holes for fixing to other brackets 1 of the battery fixing device. In this embodiment, a lithium-ion battery square cell is used as an example for description, and a lithium-ion battery fixing device is used as an example for description.

[0036] The battery fixing device provided in this embodiment, by setting limiting grooves 3 at the upper and lower ends of the back cover 4, arranges and fixes the position of the battery cells after they are installed in the bracket 1. It can evenly hold the battery cells in the bracket 1 and leave a certain gap between adjacent battery cells. This battery fixing device increases the arrangement gap between battery cells, solves the heat dissipation and expansion problems between battery cells in the battery fixing device, reduces the adverse effects of lithium battery operation in high temperature environment, and improves the safety of battery cells after assembly. The bracket 1 is provided with a number of fixing holes for fixing to other battery fixing devices, so that multiple battery fixing devices can be fixed through fixing holes and fasteners to form a detachable battery fixing module.

[0037] Compared with the prior art, the battery fixing device provided in this embodiment, by setting a limiting groove 3 that fixes the battery cell and leaves a gap, prevents the upper and lower battery cells from being directly stacked, and also increases the gap between the left and right battery cells. This increases the gap between individual battery cells, thereby solving the heat dissipation problem between battery cells. At the same time, the increased gap also solves the problem of battery cell expansion, reducing the possibility of the battery cell prematurely opening the explosion-proof valve due to insufficient expansion space, thus improving the safety and service life of the battery cells. In addition, the bracket 1 has fixing holes for fixing to other battery fixing devices, making the assembled battery module a detachable module. This facilitates the removal and replacement of a faulty fixing device or even a battery cell, reducing the impact of the faulty part on the entire battery module. Replacement is simple, convenient, economical and practical.

[0038] Furthermore, please refer to the following: Figure 2 and Figure 3 As a specific embodiment of the battery fixing device provided in this embodiment, both the two side plates of the bracket 1 and the rear cover 4 are provided with multiple heat dissipation holes 5.

[0039] In this embodiment, the battery fixing device has multiple heat dissipation holes 5 on both side plates and the rear cover 4 of the bracket 1. These multiple heat dissipation holes 5 are opened after stress analysis based on the characteristics of the battery fixing device and the size of the openings. The battery fixing device has reasonable heat dissipation holes 5 after stress analysis, which not only ensures the structural strength but also facilitates heat dissipation between the battery cells.

[0040] For example, the battery fixing device is made of plastic and the battery cell is a square cell. After placing multiple square cells inside the battery fixing device with heat dissipation holes 5, a finite element model analysis is performed on the battery fixing device model after the square cells are placed. Based on the material, structure, thickness of the battery fixing device, as well as the size and number of openings, a stress analysis is performed on the battery fixing device model using thermal analysis software. If the maximum equivalent stress of the battery fixing device bracket 1 and the back cover 4 does not reach the yield limit of the plastic material, then the strength of the battery fixing device with heat dissipation holes 5 meets the requirements.

[0041] The battery fixing device provided in this embodiment increases the heat dissipation effect of the battery cells inside the battery fixing device by setting multiple heat dissipation holes 5 on the two side plates and the rear cover 4 of the bracket 1, further solving the heat dissipation and expansion problems between the battery cells, improving the safety of the battery cells after assembly, and reducing the adverse effects of lithium battery operation in high temperature environment.

[0042] Furthermore, please refer to the following: Figure 2 and Figure 3 As a specific embodiment of the battery fixing device provided in this embodiment, the bracket 1 has a plurality of explosion-proof valve ports 6 in the middle of its end face, and battery cell outlet holes 7 are provided above and below the explosion-proof valve ports 6. The bracket 1 has wire clamping grooves 8 in the middle of its two side plates.

[0043] The battery fixing device provided in this embodiment further increases the expansion and heat dissipation space between the battery cells by setting multiple explosion-proof valve ports 6 in the middle of the end face of the bracket 1, which solves the problem of battery cell expansion during operation and provides stress release buffer space for battery cell expansion, preventing the battery cells from opening the explosion-proof valve in advance and causing greater safety hazards. By setting battery cell wire outlet holes 7 above and below the explosion-proof valve ports 6 in the middle of the end face of the bracket 1 and setting wire clamping grooves 8 in the middle of the two side plates of the bracket 1, it is convenient to arrange the circuit after the battery cells are grouped, making the circuit arrangement in the battery fixing device neat and beautiful, and further reducing the problem of insufficient heat dissipation space for the battery cells caused by messy circuits.

[0044] Furthermore, please refer to the following: Figure 2 and Figure 3As a specific embodiment of the battery fixing device provided in this embodiment, the fixing hole includes a first hole 9 opened on the upper end of the end face of the bracket 1, and a second hole 10 for fixing to the first hole 9 on the bracket 1 of another battery fixing device.

[0045] The battery fixing device provided in this embodiment has two battery fixing device brackets 1 arranged side by side. The first hole 9 of one battery fixing device bracket 1 corresponds to the second hole 10 of the other battery fixing device bracket 1. These two fixing holes are used to fix the battery fixing devices to each other through fasteners. The specific fixing method can be achieved by various structures. For example, a fixing plate and two screws are provided. The two screws simultaneously fix the fixing plate to the first hole 9 of one battery fixing device bracket 1 and the second hole 10 of the other battery fixing device bracket 1. Alternatively, a connecting rod is provided. The connecting rod has two screws at both ends, which are screwed into the first hole 9 of one battery fixing device bracket 1 and the second hole 10 of the other battery fixing device bracket 1, respectively, to achieve mutual fixing between the two brackets 1, thereby achieving mutual fixing between the two battery fixing devices.

[0046] The battery fixing device provided in this embodiment has a first hole 9 on the bracket 1 and a second hole 10 that is fixed to the first hole 9 on the bracket 1 of another battery fixing device. This allows for the subsequent fixing of two or more battery fixing devices to each other by fasteners. The battery module assembled with the battery fixing device and the battery cell has the characteristic of easy disassembly. When some battery fixing devices or even battery cells in the battery module fail, it is easy to remove and replace the faulty battery fixing devices or battery cells, reducing the impact of the faulty part on the entire battery module. The replacement is simple, convenient, economical and practical.

[0047] Furthermore, please refer to the following: Figure 2 and Figure 3 As a specific embodiment of the battery fixing device provided in this embodiment, the lower end of the end face of the bracket 1 is provided with a first protrusion 11 and a second protrusion 12 perpendicular to the end face of the bracket 1. The fixing hole includes a third hole provided on the first protrusion 11 and a fourth hole provided on the second protrusion 12. The third hole and the fourth hole are coaxial.

[0048] In this embodiment, the battery fixing device provides that after the brackets 1 of the two battery fixing devices are arranged side by side, the first protrusion 11 of the bracket 1 of one battery fixing device is closely attached to the second protrusion 12 of the bracket 1 of the other battery fixing device. Since the third hole and the fourth hole are coaxial, they can be fixed to each other by fasteners such as studs and rivets passing through the two holes, so as to achieve mutual fixation between the two brackets 1, thereby achieving mutual fixation between the two battery fixing devices.

[0049] The battery fixing device provided in this embodiment has a first protrusion 11 and a second protrusion 12 perpendicular to the end face of the bracket 1 at the lower end of the bracket 1. Then, a third hole and a fourth hole coaxially are provided on the first protrusion 11 and the second protrusion 12, so that two or more battery fixing devices can be fixed to each other by fixing components. The battery module assembled with the battery fixing device and the battery cell has the characteristic of easy disassembly. When some battery fixing devices or even battery cells in the battery module fail, it is easy to remove and replace the faulty battery fixing devices or battery cells, reducing the impact of the faulty part on the entire battery module. Replacement is simple, convenient and economical. In addition, since the first hole 9 and the second hole 10 are located at the upper end of the end face of the bracket 1, and the third hole and the fourth hole are located at the lower end of the end face of the bracket 1, the stability of the multiple battery fixing devices that are fixed to each other is further improved. Thus, the structural stability of the battery module assembled with the battery fixing device and the battery cell is further improved on the basis of detachable assembly.

[0050] Furthermore, please refer to the following: Figure 2 and Figure 3 As a specific embodiment of the battery fixing device provided in this embodiment, the bracket 1 is provided with a protruding component 13 for fixing an insulating plate, and the two side plates of the bracket 1 are provided with a snap-fit ​​component 14 for fixing to the bracket 1 of another battery fixing device.

[0051] The battery fixing device provided in this embodiment includes a protruding component 13 on the bracket 1 for fixing the insulating plate. The protruding component 13 includes an upper protrusion and a lower protrusion. The upper protrusion is located at the upper end of the bracket 1 and moves vertically downward. The lower protrusion is located at the lower end of the bracket 1 and moves vertically upward. The insulating plate can be locked in the upper and lower protrusions to insulate the battery cells and circuits in the battery fixing device, thereby improving the safety of the battery module after the battery cells are assembled.

[0052] The battery fixing device provided in this embodiment has a buckle assembly 14 on both sides of the bracket 1 for fixing to the bracket 1 of another battery fixing device. The buckle assembly 14 includes a first buckle assembly 14 and a second buckle assembly 14. During the battery cell assembly process, the two battery fixing devices are initially fixed by the buckle assembly 14, which makes it easier to fix the two battery fixing devices through multiple fixing holes in the future, thereby improving the efficiency and convenience of assembling the battery fixing devices.

[0053] Please refer to the following: Figures 4 to 7 This embodiment provides a battery fixing module, which will now be described. The battery fixing module includes multiple battery fixing devices as described in the above embodiments, and the multiple battery fixing devices are fixed to each other through the fixing holes.

[0054] Furthermore, please refer to the following: Figure 4 and Figure 5 As a specific implementation of the battery fixing module provided in this embodiment, the battery fixing module further includes a first hole 9 and a second hole 10 opened on the end face of the bracket 1, and a fixing piece 16 for connecting the first hole 9 and the second hole 10.

[0055] The battery fixing module provided in this embodiment includes at least two battery fixing devices. The brackets 1 of the two battery fixing devices are arranged side by side. The first hole 9 of the bracket 1 of one battery fixing device corresponds to the second hole 10 of the bracket 1 of the other battery fixing device. These two fixing holes are used to fix the battery fixing devices to each other by setting a fixing piece 16 and a screw assembly. For example, a fixing piece 16 and two screws are provided. The two screws simultaneously fix the fixing piece 16 to the first hole 9 of the bracket 1 of one battery fixing device and the second hole 10 of the bracket 1 of the other battery fixing device, thereby achieving mutual fixation between the two battery fixing devices and realizing the tightness and stability of the battery fixing module structure, which includes at least two battery fixing devices.

[0056] Further, please refer to Figure 5 As a specific implementation of the battery fixing module provided in this embodiment, the battery fixing module further includes a third hole on the first protrusion 11 at the lower end of the end face of the bracket 1 and a fourth hole on the second protrusion 12, as well as a stud 17 for connecting the third hole and the fourth hole.

[0057] The battery fixing module provided in this embodiment includes at least two battery fixing devices. After the brackets 1 of the two battery fixing devices are arranged side by side, the first protrusion 11 of the bracket 1 of one battery fixing device is closely attached to the second protrusion 12 of the bracket 1 of the other battery fixing device. The third hole on the first protrusion 11 and the fourth hole on the second protrusion 12 are coaxial and can be fixed to each other by a stud 17 passing through the two holes, thereby realizing the mutual fixing between the two battery fixing devices and achieving the tightness and stability of the battery fixing module structure including at least two battery fixing devices. Since the first hole 9 and the second hole 10 are located at the upper end of the end face of the battery fixing device bracket 1, and the third hole and the fourth hole are located at the lower end of the end face of the battery fixing device bracket 1, the stability of the multiple battery fixing devices that are fixed to each other is further improved. This further improves the structural stability of the battery module after the battery fixing devices and battery cells are assembled into a group, based on the detachable assembly.

[0058] Furthermore, since the battery mounting module is composed of multiple battery mounting devices, it is a modular design module based on the basic modules of the battery mounting devices. It is flexible in installation, convenient and diverse in combination, and occupies little space, which greatly improves the structural compactness of the battery module. It is suitable for various module arrangement methods and can adapt to the requirements of different shell sizes. It can achieve lightweighting of the battery module with the same battery energy.

[0059] Further, please refer to Figure 6 As a specific embodiment of the battery fixing module provided in this example, the battery fixing module further includes a plurality of fixing baffles 18 for fixing the battery fixing device. The support side plate of the battery fixing device is also provided with side plate fixing holes 15, and the fixing baffles are fixed to the support side plate of the battery fixing device through the side plate fixing holes 15.

[0060] Since the bracket 1 of the battery fixing device has multiple fixing holes on the end face of the bracket 1, the battery fixing device that makes up the battery fixing module can only be combined horizontally. The battery fixing module provided in this embodiment can be combined vertically by adding multiple fixing baffles 18 fixed to the side plate of the battery fixing device, so as to realize the battery fixing module can be assembled in multiple ways, making the battery fixing module suitable for multiple module arrangement methods, thereby adapting to the requirements of different shell sizes, and achieving the weight reduction of the battery module under the same battery energy.

[0061] For example, the battery fixing device has side plate fixing holes 15 on the side plate of the bracket. The battery fixing module includes at least four battery fixing devices, two fixing baffles 18 and two insulating plates 19. After the battery cell is installed into the battery fixing device and the two battery fixing devices are fixed to each other through the fixing holes, the two battery fixing devices are first locked together by the buckle assembly 14 to play a preliminary positioning role. Then, the two battery fixing devices are locked together by the fixing holes and the fixing parts. After that, the four battery fixing devices are stacked in a certain way. The two fixing baffles 18 are placed on both sides of the four battery fixing devices. The four battery fixing devices are fixed together again by the side plate fixing holes 15 and the screw assembly. The fixing baffles 18 also have wire holes so that the wires in the battery fixing module can pass through. Finally, the insulating plates 19 can be locked in the upper and lower protrusions of the battery fixing devices to provide insulation protection for the battery fixing module.

[0062] The battery fixing module provided in this embodiment uses a fixing baffle 18 to fix multiple battery fixing devices together to form a structurally stable battery fixing module, such as... Figure 6 and Figure 7As shown, it can accommodate both horizontal and vertical cell mounting, making the battery module suitable for various module arrangements and adapting to different casing sizes. This allows for lightweighting of the battery module while maintaining the same battery energy.

[0063] Please see Figure 7 This embodiment also provides a battery module, which will now be described. The battery module includes multiple battery cells and one or more battery fixing devices 1 as described in the above embodiments. The battery module in this embodiment corresponds one-to-one with the battery fixing devices and battery fixing modules described in the above embodiments, and will not be described again here.

[0064] The working principle of the battery fixing device and battery fixing module described in this invention is as follows: The battery fixing device is a detachable battery fixing module unit device with flexible installation method. The battery fixing device includes a bracket 1, a back cover 4, a limiting groove 3, and fixing holes. The bracket 1 has an internal gap, and the back cover 4 is provided with a limiting groove 3, which can evenly fix the battery cells in the battery fixing device, increasing the spacing between the battery cells, solving the heat dissipation problem between the battery cells, and improving the safety of the battery cells after assembly. The end face of the bracket 1 is also provided with heat dissipation holes 5 to increase the gap and explosion-proof valve buckles to improve the battery cell wire... The device features a neat and aesthetically pleasing cable outlet 7, a cable clamping groove 8, and a protruding component 13 that can be inserted into an insulating plate 19. The end face of the bracket 1 has multiple fixing holes for securing at least two battery fixing devices using fixing plates 16 and screw assemblies. The side plate of the bracket also has a buckle assembly 14 and side plate fixing holes 15. During the assembly of the battery fixing devices into a battery fixing module, the buckle assembly 14 limits and fixes the battery fixing devices using a buckling method, and the side plate fixing holes 15 and fixing baffles 18 further secure the assembled battery fixing modules. The battery fixing module composed of the battery fixing devices provided by this invention allows for detachable and flexible assembly of the battery cells and fixing devices, with gaps between the cells. This ensures module tightness while facilitating heat dissipation between cells. It can accommodate both horizontal and vertical cell stacking, making the battery fixing module suitable for various module arrangements and adapting to different casing sizes. This allows for lightweighting of the battery module while maintaining the same battery energy.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery securing device, characterized by The back cover and the bracket for multiple battery cells are provided with multiple limiting grooves at the upper and lower ends of the back cover for fixing the battery cells and keeping the gap between adjacent battery cells; The bracket is provided with multiple fixing holes for fixing the bracket of another battery fixing device, and multiple battery fixing devices are fixed through the fixing holes and fixing members to form a battery fixing module; The bracket is provided with a protruding assembly for fixing the insulating plate, and the two side plates of the bracket are provided with a buckle assembly for fixing the bracket of another battery fixing device; The protruding assembly includes an upper protruding member and a lower protruding member, wherein the upper protruding member is vertically downward protruding on the upper end of the end face of the bracket, and the lower protruding member is vertically upward protruding on the lower end of the end face of the bracket, and the insulating plate is clamped in the upper protruding member and the lower protruding member.

2. The battery securing device of claim 1, wherein, The fixing hole includes a first hole on the upper end of the end face of the bracket, and a second hole for fixing the first hole on the bracket of another battery fixing device.

3. The battery securing device of claim 2, wherein, The lower end of the end face of the bracket is provided with a first protrusion and a second protrusion perpendicular to the end face of the bracket, and the fixing hole includes a third hole on the first protrusion and a fourth hole on the second protrusion, and the third hole and the fourth hole are coaxial.

4. The battery securing device of claim 3, wherein, The two side plates of the bracket and the back cover are provided with multiple heat dissipation holes.

5. The battery fixture of any one of claims 1-4, wherein, The middle part of the end face of the bracket is provided with multiple explosion-proof valve ports, and the upper and lower parts of the explosion-proof valve ports are provided with battery wire outlets, and the middle part of the two side plates of the bracket is provided with a wire clamping groove.

6. A battery fixation module characterized by comprising: The battery fixing device includes multiple battery fixing devices as claimed in any one of claims 1 to 5, and multiple battery fixing devices are fixed through the fixing holes.

7. The battery fixation module according to claim 6, wherein The first hole and the second hole are provided on the end face of the bracket, and a fixing sheet is used to connect the first hole and the second hole.

8. The battery fixation module according to claim 7, wherein The third hole on the first protrusion and the fourth hole on the second protrusion are provided on the lower end of the end face of the bracket, and a stud is used to connect the third hole and the fourth hole.

9. The battery fixation module according to claim 8, wherein Multiple fixing baffle plates are used to fix the battery fixing device.

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