Connecting fixture and modular energy storage power supply

Abstract

The present disclosure provides a connecting fixing piece and a modular energy storage power supply. The connecting fixing piece is used for modular fixing of two adjacent battery cell modules. The connecting fixing piece comprises a connecting fixing part and a bent positioning part fixed to the connecting fixing part. Two ends of the connecting fixing part are used for detachable connection to the two adjacent battery cell modules, so as to modularly fix the two adjacent battery cell modules. The bent positioning part is bent towards one side adjacent to the connecting fixing part, and a positioning end of the bent positioning part abuts against the connecting fixing part. The bent positioning part is used for being fixed in a positioning groove of the battery cell module, so that the connecting fixing part is pre-positioned in the battery cell module through the bent positioning part. The connecting fixing piece can effectively reduce the assembly difficulty of the modular energy storage power supply.

Description

Technical Field

[0001] This disclosure relates to the technical field of energy storage power supplies, and in particular to a connecting fastener and a modular energy storage power supply. Background Technology

[0002] Energy storage power supplies are crucial for power generation and are widely used in outdoor power supply scenarios. To enhance the energy storage capacity of energy storage power supplies, two or more battery cell modules are typically modularly assembled and fixed using threaded fasteners. Specifically, during the modular assembly of battery cell modules, adjacent battery cell modules must first be precisely aligned, and then fasteners such as screws or bolts are used to securely connect the adjacent battery cell modules.

[0003] However, during the threaded connection process, the battery cell modules are highly susceptible to interference from external environmental factors such as mechanical vibration and operational impacts. This can cause relative offset or even misalignment between two adjacent battery cell modules that have already been aligned, severely affecting the assembly quality of the energy storage power supply. Therefore, manual assistance is often required during assembly. The alignment accuracy is ensured through the operator's experience and real-time adjustments, which makes the assembly of the energy storage power supply more difficult. This not only greatly reduces the production efficiency of the energy storage power supply but also significantly increases its production cost. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a connection fastener and modular energy storage power supply with lower assembly difficulty.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] A connecting fastener is used to modularly fix two adjacent battery cell modules. The connecting fastener includes a connecting and fixing part and a bent positioning part fixed to the connecting and fixing part.

[0007] Both ends of the connecting fixing part are detachably connected to two adjacent battery cell modules to modularly fix the two adjacent battery cell modules. The bending positioning part bends toward the side adjacent to the connecting fixing part, and the positioning end of the bending positioning part abuts against the connecting fixing part. The bending positioning part is fixed in the positioning groove of the battery cell module so that the connecting fixing part is pre-positioned in the battery cell module through the bending positioning part.

[0008] In one embodiment, the bending positioning part includes a bending part fixed to the connecting fixing part and a positioning part fixed to the bending part. The positioning end of the bending positioning part is disposed on the positioning part. The bending part bends toward the side adjacent to the connecting fixing part so that the positioning part abuts against the connecting fixing part. The positioning part is used to fix it in the positioning groove of the battery cell module.

[0009] In one embodiment, the positioning part has a first hollow welding area, and the connecting and fixing part has a second hollow welding area disposed opposite to the first hollow welding area.

[0010] In one embodiment, the connection fixing part includes a connection part and two fixing parts fixed at both ends of the connection part, the two fixing parts being used to be threadedly connected to two adjacent battery cell modules respectively.

[0011] In one embodiment, the connecting fastener further includes a first fastener, the fastening portion having a first positioning hole for being disposed opposite to a first threaded hole of the battery cell module, the first fastener passing through the first positioning hole and for being threadedly connected to the first threaded hole.

[0012] In one embodiment, the connecting fixing part and the bending positioning part are integrally formed.

[0013] In one embodiment, the bending portion and the positioning portion are integrally formed.

[0014] In one embodiment, the fixing part and the connecting part are integrally formed.

[0015] In one embodiment, the vertical thickness of the connecting portion is less than the vertical thickness of the fixing portion.

[0016] In one embodiment, the fixing part is symmetrically arranged with respect to the center position of the connecting part.

[0017] In one embodiment, there are two bending positioning parts, and the two bending positioning parts are respectively fixed to the two fixing parts.

[0018] A modular energy storage power supply includes multiple battery cell modules and the connecting and fixing components described in any of the above embodiments. The bending and positioning part is fixed in the positioning groove of the battery cell module. The two ends of the connecting and fixing part are detachably connected to two adjacent battery cell modules. The multiple battery cell modules are installed in the housing of the modular energy storage power supply. Each battery cell module includes an end plate assembly, a fixing plate, and a battery cell assembly. The positioning groove is formed in the end plate assembly. The end plate assembly is installed and fixed to the battery cell assembly. There are two end plate assemblies and two fixing plates. One end of each of the two fixing plates is detachably installed on both sides of one of the two end plate assemblies. The other end of each of the two fixing plates is detachably installed on the other end plate assembly, such that the two end plate assemblies and the two fixing plates are arranged parallel to each other and spaced apart to form a battery cell mounting area. The battery cell assembly is installed and fixed in the battery cell mounting area.

[0019] In one embodiment, the end plate assembly includes an end plate and a terminal block. The end plate has a terminal block mounting groove, and the terminal block is detachably installed in the terminal block mounting groove. The terminal block is provided with a rivet nut, which is used to lock and fix the conductive end of the battery cell assembly to the terminal block.

[0020] In one embodiment, the modular energy storage power supply further includes a pressure plate and a control board. The pressure plate is disposed on the top of the cell assembly, and both ends of the pressure plate are respectively mounted on the end plate assemblies on both sides of the cell assembly. The pressure plate is used to confine the cell assembly within the cell mounting area. A control board support platform is formed at the end of the pressure plate away from the cell assembly, and the control board is mounted on the control board support platform. A clearance hole is also formed at the end of the pressure plate adjacent to the cell assembly, which is opposite to the pressure relief valve of the cell assembly.

[0021] In one embodiment, the wall of the terminal mounting groove is formed with a snap-fit ​​flange, the terminal is formed with a snap-fit ​​groove that is adapted to the snap-fit ​​flange, and the snap-fit ​​flange is snapped and fixed in the snap-fit ​​groove.

[0022] In one embodiment, thermally conductive buffer pads are provided between the end plate assembly and the cell assembly, as well as between two adjacent individual cells of the cell assembly.

[0023] In one embodiment, both of the fixing plates have heat dissipation perforations.

[0024] In one embodiment, the cell module further includes a bottom support plate, which is mounted and fixed to the bottom of the cell assembly.

[0025] In one embodiment, the bottom ends of the two fixing plates adjacent to one side of the cell assembly are formed with support flanges, which are used to abut against and support the cell assembly.

[0026] Compared with the prior art, this disclosure has at least the following advantages:

[0027] 1. The aforementioned connecting fastener, since both ends of the connecting fastener are detachably connected to two adjacent cell modules for modular fixing of the two adjacent cell modules, the bending positioning part bends toward the side adjacent to the connecting fastener and the positioning end of the bending positioning part abuts against the connecting fastener. The bending positioning part is fixed in the positioning groove of the cell module, so that the connecting fastener can be quickly aligned with the preset position of the end plate assembly through the bending positioning part, which greatly reduces the difficulty of aligning the connecting fastener and the cell module, and thus greatly reduces the difficulty of assembling and disassembling the connecting fastener and the cell module, thereby greatly reducing the production cost and maintenance cost of the modular energy storage power supply.

[0028] 2. Since the connecting fixing part is pre-positioned on the end plate assembly through the bending positioning part, the connecting fixing part can be reliably pre-fixed to the preset position of the end plate assembly through the bending positioning part. Compared with the battery pack module in the above-mentioned related technologies, the connecting fixing part of this disclosure does not require manual assistance in positioning and can also prevent the connecting fixing part from shaking or even shifting relative to the end plate assembly when it is assembled and fixed with the end plate assembly. This effectively avoids the phenomenon of misalignment of the connecting fixing part, further reducing the assembly difficulty of the modular energy storage power supply of this disclosure. This not only greatly improves the production efficiency of the modular energy storage power supply, but also greatly reduces the production cost of the modular energy storage power supply. At the same time, the bending positioning part can also increase the horizontal thickness of the connecting fixing part to improve the structural strength of the connecting fixing part, which greatly improves the fixing reliability of the connecting fixing part, and thus greatly improves the stability of the modular energy storage power supply in use. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a partial structural schematic diagram of a modular energy storage power supply according to one embodiment;

[0031] Figure 2 for Figure 1 A partially enlarged schematic diagram of the modular energy storage power supply shown;

[0032] Figure 3 for Figure 1 Another perspective schematic diagram of the modular energy storage power supply shown;

[0033] Figure 4 for Figure 1 Another partial structural diagram of the modular energy storage power supply is shown;

[0034] Figure 5 for Figure 4 Another perspective schematic diagram of the modular energy storage power supply shown;

[0035] Figure 6 for Figure 1 Another partial structural schematic diagram of the modular energy storage power supply shown;

[0036] Figure 7 for Figure 1 Another partial structural schematic diagram of the modular energy storage power supply shown;

[0037] Figure 8 for Figure 1 Another partial structural schematic diagram of the modular energy storage power supply shown;

[0038] Figure 9 This is a schematic diagram of the structural model of a modular energy storage power source. Detailed Implementation

[0039] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0043] like Figures 1 to 9As shown, in one embodiment, the connecting fastener 10 is used to modularly fix two adjacent battery cell modules 20. The connecting fastener 10 includes a connecting fastener part 101 and a bending positioning part 102 fixed to the connecting fastener part 101. Both ends of the connecting fastener part 101 are detachably connected to the two adjacent battery cell modules 20 to modularly fix the two adjacent battery cell modules 20. The bending positioning part 102 bends toward the side adjacent to the connecting fastener part 101, and the positioning end of the bending positioning part 102 abuts against the connecting fastener part 101. The bending positioning part 102 is fixed in the positioning groove 201 of the battery cell module 20, so that the connecting fastener part 101 can be quickly aligned with the preset position of the battery cell module 20 through the bending positioning part 102. This greatly reduces the difficulty of aligning the connecting fastener part 101 with the battery cell module 20, thereby greatly reducing the difficulty of assembling and disassembling the connecting fastener 10 and the battery cell module 20, and thus greatly reducing the production cost and maintenance cost of the modular energy storage power supply.

[0044] like Figures 1 to 9 As shown, the connecting fixing part 101 is pre-positioned in the cell module 20 by the bending positioning part 102, so that the connecting fixing part 101 can be reliably pre-fixed in the preset position of the cell module 20 by the bending positioning part 102. Compared with the battery pack module in the above-mentioned related technology, the connecting fixing part 10 of this disclosure can prevent the connecting fixing part 101 from shaking or even displacing relative to the cell module 20 when it is assembled and fixed with the cell module 20 without manual assistance. This effectively avoids the phenomenon of misalignment of the connecting fixing part 10, and further reduces the assembly difficulty of the modular energy storage power supply of this disclosure. It not only greatly improves the production efficiency of the modular energy storage power supply, but also greatly reduces the production cost of the modular energy storage power supply. At the same time, the bending positioning part 102 can also increase the horizontal thickness of the connecting fixing part 101 to improve the structural strength of the connecting fixing part 101, which greatly improves the fixing reliability of the connecting fixing part 10, and thus greatly improves the stability of the modular energy storage power supply.

[0045] In this embodiment, when two or more cell modules 20 need to be modularly assembled, the multiple cell modules 20 are first placed side by side or stacked. Then, the bending positioning part 102 is fixed in the snap-fit ​​groove 20242 of the cell module 20, so that the two ends of the connecting fixing part 101 can be pre-fixed to the preset positions of the two adjacent cell modules 20 through the bending positioning part 102. Finally, the connecting fixing part 101 and the cell module 20 are assembled and fixed. Compared with the battery pack module in the above-mentioned related technology, the connecting fixing part 10 of this disclosure can prevent the connecting fixing part 101 from shaking or even displacing relative to the cell module 20 when it is assembled and fixed with the cell module 20 without the need for manual positioning. This effectively avoids the phenomenon of misalignment of the connecting fixing part 10, which greatly reduces the assembly difficulty of the modular energy storage power supply of this disclosure. It not only greatly improves the production efficiency of the modular energy storage power supply, but also greatly reduces the production cost of the modular energy storage power supply.

[0046] The aforementioned connecting fastener 10 has two ends of the connecting fastener 101 threadedly connected to two adjacent cell modules 20 for modular fixing of the two adjacent cell modules 20. The bending positioning part 102 bends toward the side adjacent to the connecting fastener 101, and the positioning end of the bending positioning part 102 abuts against the connecting fastener 101. The bending positioning part 102 is fixed in the positioning groove 201 of the cell module 20, so that the connecting fastener 101 can be quickly aligned with the preset position of the cell module 20 through the bending positioning part 102. This greatly reduces the difficulty of aligning the connecting fastener 101 with the cell module 20, and thus greatly reduces the difficulty of assembling and disassembling the connecting fastener 10 and the cell module 20, thereby greatly reducing the production cost and maintenance cost of the modular energy storage power supply.

[0047] Furthermore, since the connecting fixing part 101 is pre-positioned in the cell module 20 through the bending positioning part 102, the connecting fixing part 101 can be reliably pre-fixed in the preset position of the cell module 20 through the bending positioning part 102. Compared with the battery pack module in the above-mentioned related technologies, the connecting fixing part 10 of this disclosure does not require manual positioning and can also prevent the connecting fixing part 101 from shaking or even shifting relative to the cell module 20 when it is assembled and fixed with the cell module 20. This effectively avoids the phenomenon of misalignment of the connecting fixing part 10, further reducing the assembly difficulty of the modular energy storage power supply of this disclosure. This not only greatly improves the production efficiency of the modular energy storage power supply, but also greatly reduces the production cost of the modular energy storage power supply. At the same time, the bending positioning part 102 can also increase the horizontal thickness of the connecting fixing part 101 to improve the structural strength of the connecting fixing part 101, which greatly improves the fixing reliability of the connecting fixing part 10, and thus greatly improves the stability of the modular energy storage power supply.

[0048] like Figures 1 to 7 As shown, in one embodiment, the bending positioning part 102 includes a bending part 1021 fixed to the connecting fixing part 101 and a positioning part 1022 fixed to the bending part 1021. The positioning end of the bending positioning part 102 is located at the positioning part 1022. The bending part 1021 bends toward the side adjacent to the connecting fixing part 101 so that the positioning part 1022 abuts against the connecting fixing part 101. The positioning part 1022 is used to fix itself to the positioning groove 201 of the cell module 20, so that the connecting fixing part 101 can be quickly aligned with the preset position of the cell module 20 through the positioning part 1022, which greatly reduces the difficulty of aligning the connecting fixing part 101 and the cell module 20. At the same time, the connecting fixing part 101 can also be aligned with the positioning part through the positioning part. The 1022 is securely pre-fixed at a preset position on the cell module 20, preventing the connecting fixing part 101 from shaking or even shifting relative to the cell module 20 during assembly and fixing. This effectively avoids misalignment of the connecting fixing part 10, further reducing the assembly difficulty of the modular energy storage power supply. This not only greatly improves the production efficiency of the modular energy storage power supply but also significantly reduces its production cost. At the same time, the positioning part 1022 can also increase the horizontal thickness of the connecting fixing part 101 to improve its structural strength, thereby greatly improving the fixing reliability of the connecting fixing part 10 and thus greatly improving the stability of the modular energy storage power supply.

[0049] like Figures 1 to 7 As shown, in one embodiment, the positioning part 1022 is snapped into the positioning groove 201, which not only enables the connecting fastener 10 to be securely fixed to the preset position of the cell module 20 through the positioning part 1022, but also greatly reduces the difficulty of installing and disassembling the connecting fastener 10 and the cell module 20, thereby greatly improving the production efficiency of the energy storage power supply.

[0050] like Figures 4 to 5 As shown, in one embodiment, the positioning part 1022 has a first hollow welding area 10221, and the connecting fixing part 101 has a second hollow welding area 1013 opposite to the first hollow welding area 10221. This allows the production worker to weld and fix the positioning part 1022 to the connecting fixing part 101 along the periphery of the positioning part 1022 after welding and fixing it to the connecting fixing part 101. This not only greatly increases the welding area between the positioning part 1022 and the connecting fixing part 101, making the positioning part 1022 more securely fixed to the connecting fixing part 101, but also reduces the production material of the connecting fixing part 10, thereby greatly reducing the production cost and weight of the connecting fixing part 10.

[0051] like Figure 4 and Figure 7 As shown, in one embodiment, the connecting fixing part 101 includes a connecting part 1011 and two fixing parts 1012 fixed at both ends of the connecting part 1011. The two fixing parts 1012 are used to be threadedly connected to two adjacent cell modules 20 respectively, so that the connecting part 1011 can modularly assemble and fix the two adjacent cell modules 20 through the fixing parts 1012 at both ends. At the same time, it also greatly reduces the difficulty of assembling and disassembling the fixing parts 1012 and the cell modules 20, so as to facilitate the replacement of the cell modules 20 and the connecting fixing parts 10, thereby greatly reducing the production cost and maintenance cost of the modular energy storage power supply.

[0052] like Figures 1 to 7 As shown, in one embodiment, the connecting fastener 10 further includes a first fastener 103. The fixing part 1012 is formed with a first positioning hole 10121 for being disposed opposite to the first threaded hole 2021 of the cell module 20. The first fastener 103 passes through the first positioning hole 10121 and is threadedly connected to the first threaded hole 2021 to reduce the difficulty of assembling and disassembling the fixing part 1012 and the cell module 20, thereby reducing the production cost and maintenance cost of the modular energy storage power supply.

[0053] like Figures 4 to 5 As shown, in one embodiment, the connecting fixing part 101 and the bending positioning part 102 are integrally formed, which not only greatly improves the structural compactness of the connecting fixing part 10, but also makes the bending positioning part 102 more securely fixed to the connecting fixing part 101, thereby greatly improving the stability and service life of the connecting fixing part 10.

[0054] like Figures 4 to 5 As shown, in one embodiment, the bending portion 1021 and the positioning portion 1022 are integrally formed, which not only greatly improves the structural compactness of the bending positioning portion 102, but also makes the positioning portion 1022 more securely fixed to the bending portion 1021, thereby greatly improving the stability and service life of the connecting fastener 10.

[0055] like Figures 2 to 5 As shown, in one embodiment, the fixing part 1012 and the connecting part 1011 are integrally formed, which not only greatly improves the structural compactness of the bending positioning part 102, but also allows the fixing part 1012 to be more securely fixed to the connecting part 1011, thereby greatly improving the structural strength of the connecting fixing part 101. This allows the connecting part 1011 to more securely fix two adjacent battery cell modules 20 through the fixing parts 1012 at both ends, thereby greatly improving the assembly reliability and usage stability of the modular energy storage power supply.

[0056] like Figures 4 to 5As shown, in one embodiment, the vertical thickness of the connecting portion 1011 is less than the vertical thickness of the fixing portion 1012, so as to reduce the production material of the connecting fastener 10, thereby reducing the production cost and weight of the connecting fastener 10.

[0057] like Figures 2 to 5 As shown, in one embodiment, the fixing part 1012 is symmetrically arranged at the center position relative to the connecting part 1011, so that the fixing part 1012 is subjected to uniform force on both sides of the connecting part 1011, which greatly reduces the possibility of structural deformation of the connecting fastener 10 due to eccentric load, thereby greatly improving the stability and service life of the connecting fastener 10.

[0058] like Figures 4 to 5 As shown, in one embodiment, there are two bending positioning parts 102, and the two bending positioning parts 102 are respectively fixed to two fixing parts 1012, so that the connecting fastener 10 can be more securely fixed at the preset position of the cell module 20, thereby greatly reducing the risk of damage.

[0059] like Figures 1 to 7 As shown, this disclosure also provides a modular energy storage power supply, including multiple battery cell modules 20 and the connecting and fixing member 10 described in any of the above embodiments. The bending and positioning part 102 is fixed in the positioning groove 201 of the battery cell module 20. The two ends of the connecting and fixing part 101 are detachably connected to two adjacent battery cell modules 20. The multiple battery cell modules 20 are all installed in the housing of the modular energy storage power supply. The battery cell module 20 includes an end plate assembly 202, a fixing plate 203, and a battery cell assembly 204. The positioning groove 201 is formed in the end plate assembly 202. The end plate assembly 202 is installed and fixed to the battery cell assembly 204. There are two end plate assemblies 202 and two fixing plates 203. One end of each of the two fixing plates 203 is detachable. The two end plate assemblies 202 are installed on both sides of one of the two end plate assemblies 202, and the other ends of the two fixing plates 203 are detachably installed on the other end plate assembly 202, so that the two end plate assemblies 202 and the two fixing plates 203 are arranged parallel to each other and spaced apart to form the cell mounting area 2031. The cell assembly 204 is installed and fixed in the cell mounting area 2031, so that the end plate assembly 202 and the fixing plate 203 can jointly limit and protect the cell assembly 204, avoiding the phenomenon that the cell assembly 204 directly collides with the inner wall of the modular energy storage power supply shell due to external factors such as vibration or collision, thereby greatly improving the service life of the modular energy storage power supply.

[0060] like Figures 1 to 6As shown, in one embodiment, the cell module 20 further includes a second fastener 205, and the end plate assembly 202 is formed with a second threaded hole 2023. The fixing plate 203 is formed with a second positioning hole opposite to the second threaded hole 2023. The second fastener 205 passes through the second positioning hole and is screwed into the second threaded hole 2023 to reduce the difficulty of assembling and disassembling the end plate assembly 202 and the fixing plate 203, thereby greatly reducing the assembly cost and maintenance cost of the cell module 20.

[0061] like Figures 1 to 7 As shown, in one embodiment, the end plate assembly 202 includes an end plate 2023 and a terminal block 2024. The end plate 2023 forms a terminal block mounting groove 20231, and the terminal block 2024 is detachably installed in the terminal block mounting groove 20231. The terminal block 2024 is provided with a rivet nut 20241, which is used to lock and fix the conductive end of the cell assembly 204 to the terminal block 2024, thereby shortening the connection distance between the conductive end of the external electrical equipment and the conductive end of the internal electrical components of the modular energy storage power supply and the conductive end of the cell assembly 204, reducing the amount of wiring harness used, and thus greatly reducing the production cost of the modular energy storage power supply.

[0062] like Figures 1 to 8 As shown, in one embodiment, the modular energy storage power supply further includes a pressure plate 30 and a control board 40. The pressure plate 30 is disposed on the top of the cell assembly 204, and both ends of the pressure plate 30 are respectively mounted on the end plate assemblies 202 on both sides of the cell assembly 204. The pressure plate 30 is used to confine the cell assembly 204 within the cell mounting area 2031, so that the cell assembly 204 can be reliably confined within the cell mounting area 2031, avoiding damage or even destruction to the cell assembly 204 due to direct collision or compression of the inner wall of the modular energy storage power supply housing, thereby greatly improving the service life of the modular energy storage power supply; the end of the pressure plate 30 away from the cell assembly 204 has a control board 40 formed thereon. The control board 40 is mounted on the support platform 301, so that the pressure plate 30 can support the control board 40 away from the cell assembly 204, reducing electromagnetic interference between the cell assembly 204 and the control board 40, thereby improving the stability of the modular energy storage power supply. The end of the pressure plate 30 adjacent to the cell assembly 204 also has a relief hole 302 that is opposite to the pressure relief valve of the cell assembly 204, so as to ensure that the pressure relief channel of the cell assembly 204 is unobstructed, avoiding dangerous accidents such as excessive internal pressure or even explosion caused by obstruction of internal gas release in the cell assembly 204, thereby greatly improving the safety and service life of the modular energy storage power supply.

[0063] like Figure 7As shown, in one embodiment, the groove wall of the terminal mounting groove 20231 is formed with a snap-fit ​​flange 202311, and the terminal 2024 is formed with a snap-fit ​​groove 20242 that is adapted to the snap-fit ​​flange 202311. The snap-fit ​​flange 202311 is snapped and fixed in the snap-fit ​​groove 20242 so that the terminal 2024 can be reliably fixed on the end plate 2023, thereby improving the stability of the modular energy storage power supply. At the same time, it also greatly reduces the difficulty of installing and disassembling the terminal 2024 and the end plate 2023, making it easier to replace the terminal 2024, thereby greatly reducing the production cost and maintenance cost of the modular energy storage power supply.

[0064] like Figure 6 As shown, in one embodiment, thermally conductive buffer pads 206 are provided between the two end plate assemblies 202 and the cell assembly 204, and between two adjacent individual cells 2041 of the cell assembly 204. The thermally conductive buffer pads 206 not only compensate for the size of the gaps between the end plate assemblies 202 and the cell assembly 204, and between the two adjacent individual cells 2041, so that the cell assembly 204 can be more securely confined within the cell mounting area 2031, but also buffer and disperse the pressure between the end plate assemblies 202 and the cell assembly 204, reducing the possibility of damage or even destruction to the cell assembly 204 due to excessive pressure, thereby greatly improving the service life of the modular energy storage power supply. At the same time, the thermally conductive buffer pads 206 can also effectively dissipate the heat generated by the cell assembly 204, thereby improving the thermal conductivity of the cell module 20 and ensuring that the temperature of the cell assembly 204 can be maintained within a stable normal operating range, thereby greatly improving the operational stability of the modular energy storage power supply. Furthermore, the thermally conductive buffer pad 206 is a thermally conductive silicone pad, so that the thermally conductive buffer pad 206 has a better buffering effect and thermal conductivity, and can also provide insulation for the battery cell assembly 204.

[0065] like Figure 6 As shown, in one embodiment, both fixing plates 203 have heat dissipation perforated areas 2032, which can not only increase the contact area between the battery cell assembly 204 and the air and improve the heat dissipation efficiency of the battery cell assembly 204, but also reduce the production materials of the fixing plate 203, thereby reducing the production cost and weight of the fixing plate 203.

[0066] like Figures 1 to 3As shown, in one embodiment, the cell module 20 further includes a bottom support plate 207. The bottom support plate 206 is installed and fixed to the bottom of the cell assembly 204 so that the support plate 207 can support the cell assembly 204 away from the inner wall of the modular energy storage power supply housing. This effectively avoids damage or even destruction to the cell assembly 204 caused by directly pressing against the protrusions or other sharp components of the inner wall of the modular energy storage power supply housing, and further improves the service life of the modular energy storage power supply.

[0067] like Figures 1 to 3 As shown, in one embodiment, the bottom end of one side of the two fixing plates 203 adjacent to the cell assembly 204 is formed with a support flange 2033. The support flange 2033 is used to abut against the support cell assembly 204 so that the cell assembly 204 can be more securely confined within the cell mounting area 2031, avoiding damage or even destruction of the cell assembly 204 due to direct collision or compression of the inner wall of the modular energy storage power supply, thereby greatly improving the service life of the modular energy storage power supply.

[0068] Compared with the prior art, this disclosure has at least the following advantages:

[0069] 1. In the aforementioned modular energy storage power supply, the two ends of the connecting and fixing part 101 are threaded to two adjacent cell modules 20 for modular fixing of the two adjacent cell modules 20. The bending and positioning part 102 bends toward the side adjacent to the connecting and fixing part 101, and the positioning end of the bending and positioning part 102 abuts against the connecting and fixing part 101. The bending and positioning part 102 is fixed in the positioning groove 201 of the cell module 20, so that the connecting and fixing part 101 can be quickly aligned with the preset position of the cell module 20 through the bending and positioning part 102. This greatly reduces the difficulty of aligning the connecting and fixing part 101 with the cell module 20, thereby greatly reducing the difficulty of assembling and disassembling the connecting and fixing part 10 and the cell module 20, and thus greatly reducing the production cost and maintenance cost of the modular energy storage power supply.

[0070] 2. Since the connecting fixing part 101 is pre-positioned in the cell module 20 through the bending positioning part 102, so that the connecting fixing part 101 can be reliably pre-fixed in the preset position of the cell module 20 through the bending positioning part 102, compared with the battery pack module in the above-mentioned related technology, the connecting fixing part 10 of this disclosure does not require manual positioning and can also prevent the connecting fixing part 101 from shaking or even shifting relative to the cell module 20 when it is assembled and fixed with the cell module 20. This effectively avoids the phenomenon of misalignment of the connecting fixing part 10, and further reduces the assembly difficulty of the modular energy storage power supply of this disclosure. This not only greatly improves the production efficiency of the modular energy storage power supply, but also greatly reduces the production cost of the modular energy storage power supply. At the same time, the bending positioning part 102 can also increase the horizontal thickness of the connecting fixing part 101 to improve the structural strength of the connecting fixing part 101, which greatly improves the fixing reliability of the connecting fixing part 10, and thus greatly improves the stability of the modular energy storage power supply.

[0071] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A connecting fastener (10) for modularly fixing two adjacent battery cell modules (20), characterized in that, The connecting fastener (10) includes a connecting fastener (101) and a bending positioning part (102) fixed to the connecting fastener (101); The two ends of the connecting fixing part (101) are detachably connected to two adjacent battery cell modules (20) for modular fixing of the two adjacent battery cell modules (20). The bending positioning part (102) bends toward the side adjacent to the connecting fixing part (101) and the positioning end of the bending positioning part (102) abuts against the connecting fixing part (101). The bending positioning part (102) is fixed in the positioning groove (201) of the battery cell module (20) so that the connecting fixing part (101) is pre-positioned in the battery cell module (20) by the bending positioning part (102).

2. The connecting fastener (10) according to claim 1, characterized in that, The bending positioning part (102) includes a bending part (1021) fixed to the connecting fixing part (101) and a positioning part (1022) fixed to the bending part (1021). The positioning end of the bending positioning part (102) is located in the positioning part (1022). The bending part (1021) bends toward the side adjacent to the connecting fixing part (101) so that the positioning part (1022) abuts against the connecting fixing part (101). The positioning part (1022) is used to fix itself in the positioning groove (201) of the battery cell module (20).

3. The connecting fastener (10) according to claim 2, characterized in that, The positioning part (1022) has a first hollow welding area (10221), and the connecting fixing part (101) has a second hollow welding area (1013) that is disposed opposite to the first hollow welding area (10221).

4. The connecting fastener (10) according to claim 3, characterized in that, The connection fixing part (101) includes a connection part (1011) and two fixing parts (1012) fixed at both ends of the connection part (1011). The two fixing parts (1012) are used to be threadedly connected to two adjacent battery cell modules (20) respectively.

5. The connecting fastener (10) according to claim 4, characterized in that, The connecting fastener (10) further includes a first fastener (103), the fixing part (1012) having a first positioning hole (10121) for being disposed opposite to a first threaded hole (2021) of the battery cell module (20), the first fastener (103) being threadedly connected to the first threaded hole (2021) through the first positioning hole (10121); and / or, The connecting fixing part (101) and the bending positioning part (102) are integrally formed; and / or, The bending portion (1021) and the positioning portion (1022) are integrally formed; and / or, The fixing part (1012) and the connecting part (1011) are integrally formed; and / or, The vertical thickness of the connecting portion (1011) is less than the vertical thickness of the fixing portion (1012); and / or, The fixing part (1012) is symmetrically arranged at the center position relative to the connecting part (1011); and / or, The number of the bending positioning parts (102) is two, and the two bending positioning parts (102) are respectively fixed to the two fixing parts (1012).

6. A modular energy storage power supply, characterized in that, The device includes multiple battery cell modules (20) and a connecting fastener (10) as described in any one of claims 1 to 5. The bending positioning part (102) is fixed in the positioning groove (201) of the battery cell module (20). The two ends of the connecting fastener (101) are detachably connected to two adjacent battery cell modules (20). The multiple battery cell modules (20) are all installed in the housing of the modular energy storage power supply. The battery cell module (20) includes an end plate assembly (202), a fixing plate (203), and a battery cell assembly (204). The positioning groove (201) is formed in the end plate assembly (202). The end plate assembly (202) is installed and fixed in the housing of the modular energy storage power supply. The battery cell assembly (204), the end plate assembly (202), and the fixing plate (203) are all in pairs. One end of each of the two fixing plates (203) is detachably installed on both sides of one of the two end plate assemblies (202), and the other end of each of the two fixing plates (203) is detachably installed on the other end plate assembly (202), so that the two end plate assemblies (202) and the two fixing plates (203) are arranged parallel to each other and spaced apart to form a battery cell mounting area (2031). The battery cell assembly (204) is installed and fixed in the battery cell mounting area (2031).

7. The modular energy storage power supply according to claim 6, characterized in that, The end plate assembly (202) includes an end plate (2023) and a terminal block (2024). The end plate (2023) has a terminal block mounting groove (20231). The terminal block (2024) is detachably installed in the terminal block mounting groove (20231). The terminal block (2024) is provided with a rivet nut (20241). The rivet nut (20241) is used to lock and fix the conductive end of the battery cell assembly (204) onto the terminal block (2024).

8. The modular energy storage power supply according to claim 7, characterized in that, The modular energy storage power supply also includes a pressure plate (30) and a control board (40). The pressure plate (30) is located on the top of the cell assembly (204), and both ends of the pressure plate (30) are respectively installed on the end plate assemblies (202) on both sides of the cell assembly (204). The pressure plate (30) is used to confine the cell assembly (204) within the cell mounting area (2031). A control board support platform (301) is formed at the end of the pressure plate (30) away from the cell assembly (204), and the control board (40) is installed on the control board support platform (301). A clearance hole (302) is also formed at the end of the pressure plate (30) adjacent to the cell assembly (204) and is opposite to the pressure relief valve of the cell assembly (204).

9. The modular energy storage power supply according to claim 7, characterized in that, The groove wall of the terminal mounting groove (20231) is formed with a snap-fit ​​flange (202311), and the terminal (2024) is formed with a snap-fit ​​groove (20242) that is adapted to the snap-fit ​​flange (202311). The snap-fit ​​flange (202311) is snapped and fixed in the snap-fit ​​groove (20242).

10. The modular energy storage power supply according to claim 7, characterized in that, Thermally conductive buffer pads (206) are provided between the two end plate assemblies (202) and the cell assembly (204), and between two adjacent individual cells (2041) of the cell assembly (204); and / or, Both of the aforementioned fixing plates (203) have heat dissipation perforated areas (2032); and / or, The cell module (20) further includes a bottom support plate (207), which is fixedly mounted to the bottom of the cell assembly (204); and / or, The two fixing plates (203) have a support flange (2033) formed at the bottom end of one side adjacent to the battery cell assembly (204), the support flange (2033) being used to abut against and support the battery cell assembly (204).

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