Energy storage module integrated protection structure

Abstract

The utility model discloses a kind of energy storage module integrated protection structures, it is related to energy storage module protection technical field, it includes shell, the shell includes intermediate body and the front cover, rear cover at both ends of intermediate body, intermediate body is hollow structure, the front cover and rear cover are connected with the reinforcing structure that extends along cover inner wall, reinforcing structure includes honeycomb structure board, two the honeycomb structure board is fixed in front cover and rear cover, battery management module is installed in one side of honeycomb structure board towards intermediate body;Intermediate body is used for being set on the outside of multiple groups of batteries, and limit component for limiting battery displacement is provided in intermediate body, the limit component is installed after the periphery of the arrangement of multiple groups of batteries.This application has the effect of improving the protection performance of energy storage cabinet.

Description

Technical Field

[0001] This application relates to the field of energy storage module protection technology, and in particular to an integrated protection structure for energy storage modules. Background Technology

[0002] Energy storage battery cabinets (i.e., energy storage modules) are widely used in many industries, especially in the face of continuously growing energy demand, demonstrating great flexibility and adaptability; For example, many manufacturing companies use energy storage battery cabinets to balance power load, avoid peak-hour electricity price increases, and ensure production stability and continuity. In addition to industrial applications, they can also be installed in home environments to meet power demand during abnormal power outages or for energy storage in conjunction with household solar cells.

[0003] Energy storage cabinets typically consist of battery packs, BMU / BMS battery management systems, etc. Compared to industrial energy storage cabinets, residential models often lack the integrated housing and other protection of industrial cabinets. Moreover, unlike industrial cabinets, they are not fixed in position and are not easily accessible. This makes residential models relatively easy to damage, resulting in lower safety performance. Therefore, this application proposes a new technical solution. Utility Model Content

[0004] To improve the protection performance of energy storage cabinets, this application provides an integrated protection structure for energy storage modules.

[0005] This application provides an integrated protection structure for an energy storage module, employing the following technical solution: An integrated protective structure for an energy storage module includes a housing, the housing including an intermediate body and a front cover and a rear cover located at both ends of the intermediate body, the intermediate body having a hollow structure, the front cover and the rear cover both being connected to a reinforcing structure extending along the inner wall of the cover, the reinforcing structure including a honeycomb structure plate, two of the honeycomb structure plates being fixed to the front cover and the rear cover, and a battery management module being installed on one of the honeycomb structure plates on the side facing the intermediate body. The intermediate body is used to be fitted onto the outside of multiple battery groups, and a limiting component for restricting battery displacement is provided inside the intermediate body. The limiting component is installed on the periphery of the multiple battery groups after they are arranged.

[0006] Optionally, the limiting component includes a base plate and two end plates. The end plates have a hollow structure and are equipped with a fixing frame composed of multiple inclined plates inside. The fixing frame contacts the two opposite inner walls of the end plates. The end plates abut against the battery and are located at both ends of a battery pack composed of multiple battery groups. The base plate is used to support and hold the battery pack. Both ends of the base plate extend out of the end face of the battery pack and extend out to fix the end stop strip. The side wall of the end stop strip of the base plate abuts against the battery. The limiting component also includes a hoop plate for clamping the battery pack and a side panel for the side of the battery pack. The hoop plate is sleeved on the battery pack and the end plate. The side panel abuts against the battery pack and is connected to the end plate at both ends.

[0007] Optionally, a junction box is installed between the front cover and the limiting assembly, or between the rear cover and the limiting assembly, and the junction box is connected to the side of the honeycomb structure panel facing the middle body. The intermediate body has an installation port on one of its wall panels for installing a junction box, and the installation port is located in a section of the intermediate body near the front cover, into which the junction box is inserted.

[0008] Optionally, the end plate is less than the height of the battery and multiple insulating seats are installed on the end plate. The multiple insulating seats are arranged along the length of the end plate. Each insulating seat includes a spring, a plug rod, and an insulating block. The plug rod has a toothed ring on its outer wall and is inserted into a pre-set insertion hole in the insulating block. The plug rod is hollow. The spring is inserted into the plug rod and one end extends out to abut against the adjacent inner wall of the housing. The insulating block is made of insulating material.

[0009] Optionally, the inclined plate surrounds a structural groove, and the insulating block is provided with a snap-fit ​​block that fits into the internal structural groove of the end plate.

[0010] Optionally, the end plate has multiple heat dissipation holes on the side away from the battery, and the heat dissipation holes pass through the inclined plate.

[0011] Optionally, the housing is provided with a thermally conductive solid or liquid filling structure, and the filling structure is in contact with the reinforcing structure and the battery at least simultaneously.

[0012] Optionally, the end plate includes a buckle plate bent toward the side facing the battery, the buckle plate extending upward and bent toward the battery, the buckle plate abutting against the battery.

[0013] Optionally, a slide rail is provided on the side of the intermediate body near the base plate. The length direction of the slide rail is parallel to the length direction of the intermediate body. A groove is provided on the slide rail. A slider that fits the shape of the groove is fixed on the base plate and the slider is slidably connected to the slide rail.

[0014] Optionally, it may also include insulating buffer sheets disposed between batteries or on the outer wall.

[0015] In summary, this application includes the following beneficial technical effects: by setting a reinforcing structure on the inner wall of the front cover and the rear cover, the structural strength of the front cover and the rear cover can be improved; by using the limiting component to limit the group of batteries, friction and shaking between batteries can be effectively prevented, reducing adverse consequences such as short circuit fires and shortened service life that may be caused by friction and shaking, and effectively improving the protective performance of the protective structure of the energy storage cabinet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the shell structure; Figure 2 This is a schematic diagram of the limiting component structure of this application; Figure 3 This is a schematic diagram of the internal structure of this application; Figure 4 This is a schematic diagram of the end plate and insulating base structure of this application; Figure 5 This is a schematic diagram of the internal structure of the insulating base in this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Front cover; 12. Rear cover; 13. Intermediate body; 131. Slide rail; 14. Honeycomb structure panel; 2. Limiting component; 21. End plate; 211. Buckle plate; 22. Inclined plate; 23. Base plate; 24. End stop bar; 25. Enclosure plate; 26. Hoop plate; 3. Battery pack; 4. Battery management module; 5. Junction box; 6. Insulating base; 61. Spring; 62. Insert rod; 63. Insulating block; 64. Toothed ring; 631. Snap-fit ​​block. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0019] This application discloses an integrated protection structure for an energy storage module.

[0020] Reference Figure 1 and Figure 2 The energy storage module integrated protective structure includes a housing 1, which includes an intermediate body 13 and a front cover 11 and a rear cover 12 located at both ends of the intermediate body 13. The front cover 11, the rear cover 12, and the intermediate body 13 can be fixed with bolts, nuts, or clips after the battery and internal structure are installed.

[0021] The intermediate body 13 is a hollow structure with a rectangular cross-section and open at both ends. The battery management module 4 is integrated and installed in the intermediate body 13 and close to the front cover 11. In order to strengthen the protection of the battery management module 4 and other structures, both the front cover 11 and the rear cover 12 are provided with reinforcing structures that extend along the inner wall of the cover. The reinforcing structure includes a honeycomb structure plate 14. The reinforcing structure can also be a triangular structure or a rectangular structure, as long as it can increase the structure. This application takes a honeycomb structure as an example.

[0022] Two honeycomb structure panels 14 are fixed to the front cover 11 and the rear cover 12, and the battery management module 4 is installed on one of the honeycomb structure panels 14 on the side facing the middle body 13.

[0023] Reference Figure 1 and Figure 2 The intermediate body 13 is used to be fitted on the outside of multiple battery packs. The intermediate body 13, the front cover 11 and the rear cover 12 are separated, which makes it easier to install the structure inside the insulating block 63 and the battery. The intermediate body 13 is provided with a limiting component 2 to limit the displacement of the battery, which can minimize the shaking or friction of the battery inside the housing 1 and improve safety. The limiting component 2 is installed on the periphery of the battery pack 3 formed by multiple battery packs.

[0024] Through the above configuration, the housing 1 is divided into three independent units, and a reinforcing structure is provided in the front cover 11 and the rear cover 12, which increases the convenience of installation and assembly while improving the protective performance of the energy storage cabinet housing 1; the limiting component 2 limits the group of batteries, effectively preventing the batteries from rubbing, shaking, or falling off, reducing the possibility of short circuit and fire, and improving the protective performance of the protective structure to a certain extent.

[0025] Reference Figure 2 and Figure 3 The limiting component 2 includes a base plate 23 and two end plates 21, wherein the two end plates 21 abut against both ends of the battery pack 3 and are parallel to the front cover 11. The end plates 21 have a hollow structure with a rectangular cross-section and are open at least one end in the height direction. The end plates 21 have an integrally formed fixing frame composed of multiple inclined plates 22. When viewed from above, the multiple inclined plates 22 inside the end plates 21 are spliced ​​into multiple triangles. Through the connection of the triangles, the hollow end plates 21 can have good sturdiness. The end plates 21 are hollow, and their heat dissipation performance can be appropriately enhanced.

[0026] Reference Figure 2 and Figure 4The end plate 21 is provided with multiple heat dissipation holes, which simultaneously penetrate corresponding positions on the fixing frame. The heat dissipation holes are located on the side of the end plate 21 away from the battery; that is, no heat dissipation holes are provided on the side of the end plate 21 that abuts against the battery, thus maintaining the protective function of the end plate 21. Further considering structural strength, the heat dissipation holes are staggered, with a spacing between holes not less than twice the hole diameter. Flanged reinforcement structures can be provided at the edges of the holes.

[0027] In another embodiment of this application: The housing 1 is provided with a thermally conductive solid or liquid filling structure, and the filling structure is in contact with the reinforcing structure and the battery at least simultaneously. The filling structure can be thermally conductive silicone or a phase change material (such as phase change paraffin powder). With the above arrangement, the thermally conductive silicone or phase change material can fill the interior of the housing, allowing the interior structure of the housing to fully contact the filling structure, increasing the heat conduction area, and facilitating heat conduction and dissipation.

[0028] The end plate 21 includes a buckle plate 211 bent towards the side of the battery. The buckle plate 211 may be integrally formed on the end plate 21 and abuts against the side wall of the battery. The buckle plate 211 extends upward and bends towards the battery. That is, the buckle plate 211 extends upward from one side of the end plate 21, and then bends to the side. After being bent at a right angle, the buckle plate 211 is tightly fastened to the battery, limiting the end of the battery pack 3 facing the intermediate body 13 and effectively preventing the battery pack 3 from falling off.

[0029] Reference Figure 2 and Figure 4 The base plate 23 is used to support and hold the battery pack 3. Both ends of the base plate 23 extend out of the end face of the battery pack 3 and the extended part fixes the end baffle 24. The side wall of the end baffle 24 abuts against the battery pack 3. The height of the end baffle 24 can be one-fifth of the battery height. The end baffle 24 forms a limit on both ends of the middle battery pack 3, so that the battery pack 3 is pressed against the range of the two end baffles 24.

[0030] Reference Figure 2 The limiting component 2 also includes a clamping plate 26 and a surrounding plate 25. The clamping plate 26 is used to clamp the battery pack 3 and is sleeved on the battery pack 3 and the end plate 21. The surrounding plate 25 abuts against the side wall of the battery pack 3. The surrounding plate 25 can also abut against the clamping plate 26, and both ends of the surrounding plate 25 are respectively fixed to the end plates 21 at both ends, which can be connected and fixed by bolts and nuts. Through the above configuration, the batteries can be made to fit tightly together, reducing friction or vibration.

[0031] The base plate 23 can be made of insulating material, or the positive and negative terminals of the battery can face away from the base plate 23, so that the circuit will not be connected by the base plate 23, thereby improving safety.

[0032] Referring to Figure 2, a junction box 5 is installed between the front cover 11 and the limiting component 2, or between the rear cover 12 and the limiting component 2. The junction box 5 is provided with a honeycomb structure plate 14 facing the middle body 13.

[0033] One wall panel of the intermediate body 13 has an installation opening for the junction box 5 to be installed. The junction box 5 is rectangular when viewed from above, and one end of the junction box 5 is outside the installation opening and extends laterally. The area of ​​its end is larger than the area of ​​the installation opening, that is, the part of its top that is larger than the area of ​​the installation opening abuts against the outer wall of the intermediate body 13. This can be used to install bolts and nuts to fix the junction box 5 and the intermediate body 13. A flexible material for waterproofing, such as a rubber ring, can be bonded between the junction box 5 and the intermediate body 13, which helps to enhance the ease of installation of the junction box 5 while ensuring its waterproof performance as much as possible.

[0034] Reference Figure 4 and Figure 5 The height of the end plate 21 is less than the height of the battery, and the end plate 21 is equipped with an insulating seat 6. Multiple insulating seats 6 are arranged along the length of the end plate 21. The insulating seats 6 are used to block the current from being conducted to the housing 1 and other structures. The insulating base 6 includes a spring 61, a rod 62, and an insulating block 63. At least the insulating block 63 should be made of insulating material. A toothed ring 64 is provided inside the insulating block 63 and is inserted into a pre-set insertion hole in the insulating block 63. The insertion hole is also provided with a toothed structure and engages with the toothed ring 64. There may be multiple toothed rings 64 arranged along the length of the rod 62, with a gap between each pair of toothed rings 64. The rod 62 is hollow and the spring 61 is inserted into the rod 62. One end of the spring 61 is fixed to the rod 62, and the other end extends out of the rod 62 and abuts against the inner wall of the adjacent housing 1. By providing the spring 61, the internal structure of the housing 1 can be buffered when the energy storage cabinet is moved. Furthermore, by providing the toothed ring 64 and the insertion hole, the spring 61 can move in a straight line during the buffering action and will not sway left and right or rotate.

[0035] Reference Figure 4 and Figure 5 The inclined plate 22 encloses a structural groove. Taking a triangular structural groove as an example, the end of the insulating block 63 connected to the end plate 21 is provided with a snap-fit ​​block 631 that fits into the structural groove of the end plate 21. That is, since the structural groove is triangular, the cross-section of the snap-fit ​​block 631 is a triangular structure smaller than the triangle of the structural groove. Multiple triangular structures can be included, with the sides of every two triangular structures abutting against one side of the triangular structure of the same structural groove. Thus, the insulating block 63 can be snapped into the fixing frame using the snap-fit ​​block 631. With this configuration, the insulating block 63 can be quickly installed and positioned, making it more convenient and efficient.

[0036] Reference Figure 3A slide rail 131 is provided on the side of the intermediate body 13 near the base plate 23. The direction of the slide rail 131 is parallel to the length direction of the intermediate body 13. A groove is provided on the slide rail 131. The base plate 23 is provided with a slider that slides and connects to the groove. The cross-section of the groove can be an inverted T-shape. The shape of the slider fits the groove. The slider is inverted T-shape when viewed from the side. According to the above configuration, the base plate 23 and the battery pack 3 on the upper part of the base plate 23 are pushed into the intermediate body 13. The slider slides and connects to the groove of the slide rail 131. The slide rail 131 limits the displacement direction of the base plate 23, so that the base plate 23 is not easy to loosen or shake. The end of the slide rail 131 can be provided with a stop block to prevent the base plate 23 from displacing beyond a preset distance.

[0037] Reference Figure 2 The batteries are positioned in contact with each other, and an insulating buffer sheet is fitted over the outside of each battery. This insulating buffer sheet is made of a material with insulating and fire-retardant properties to isolate the batteries from each other. The insulating buffer sheet can be made of flexible material to provide cushioning and shock absorption. The insulating buffer sheet effectively prevents potential hazards caused by friction or collision between batteries, thus improving safety.

[0038] Implementation method: An insulating buffer sheet is installed over the battery casing, and the batteries are arranged in groups according to a preset number. The grouped batteries are placed on the base plate 23, and end plates 21 and surrounding plates 25 are installed to fix and limit the batteries. An insulating seat 6 is installed on the end plate 21. The grouped batteries are pushed into the intermediate body 13 via the slide rail 131. The spring 61 of the insulating seat 6 and the intermediate body 13 are welded and fixed. The junction box 5 is inserted into the installation port and fixed. The front cover 11 and the rear cover 12 are connected and fixed to the honeycomb structure plate 14. The battery management module 4 is installed on the honeycomb structure plate 14 of the front cover 11. The front cover 11, the rear cover 12, and the intermediate body 13 are fixed with bolts, nuts, or by welding.

[0039] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated protective structure for an energy storage module, comprising a housing (1), characterized in that: The housing (1) includes an intermediate body (13) and a front cover (11) and a rear cover (12) located at both ends of the intermediate body (13). The intermediate body (13) has a hollow structure. The front cover (11) and the rear cover (12) are both connected to a reinforcing structure extending along the inner wall of the cover. The reinforcing structure includes a honeycomb structure plate (14). Two of the honeycomb structure plates (14) are fixed to the front cover (11) and the rear cover (12). The battery management module (4) is installed on one of the honeycomb structure plates (14) facing the intermediate body (13). The intermediate body (13) is used to be sleeved on the outside of multiple battery groups, and a limiting component (2) for limiting battery displacement is provided inside the intermediate body (13).

2. The integrated protection structure for the energy storage module according to claim 1, characterized in that: The limiting component (2) includes a base plate (23) and two end plates (21). The end plate (21) has a hollow structure and is equipped with a fixing frame composed of multiple inclined plates (22). The fixing frame contacts the two inner walls of the end plate (21). The end plate (21) abuts against the battery and is located at both ends of the battery pack (3) composed of multiple battery packs (3). The base plate (23) is used to support and hold the battery pack (3). The two ends of the base plate (23) extend out of the end face of the battery pack (3) and the extended part is fixed to the end stop strip (24). The side wall of the end stop strip (24) of the base plate (23) abuts against the battery. The limiting component (2) also includes a clamping plate (26) for clamping the battery pack (3) and a surrounding plate (25) on the side of the battery pack (3). The clamping plate (26) is sleeved on the battery pack (3) and the end plate (21). The surrounding plate (25) abuts against the battery pack (3) and its two ends are connected to the end plate (21).

3. The integrated protection structure for the energy storage module according to claim 2, characterized in that: The junction box (5) is installed between the front cover (11) and the limiting component (2), or between the rear cover (12) and the limiting component (2), and the junction box (5) is connected to the side of the honeycomb structure panel (14) facing the middle body (13); The intermediate body (13) has an installation port for installing the junction box (5) on one of its wall panels, and the installation port is located on a section of the intermediate body (13) near the front cover (11), and the junction box (5) is inserted into the installation port.

4. The integrated protection structure for the energy storage module according to claim 2, characterized in that: The end plate (21) is less than the height of the battery and multiple insulating seats (6) are installed on the end plate (21). The multiple insulating seats (6) are arranged along the length of the end plate (21). The insulating seat (6) includes a spring (61), a plug rod (62) and an insulating block (63). The outer wall of the plug rod (62) is provided with a toothed ring (64) and is inserted into a pre-set insertion hole in the insulating block (63). The plug rod (62) is hollow. The spring (61) is inserted into the plug rod (62) and one end extends out to abut against the inner wall of the adjacent housing (1). The insulating block (63) is made of insulating material.

5. The integrated protection structure for the energy storage module according to claim 4, characterized in that: The inclined plate (22) encloses the structural groove, and the insulating block (63) is provided with a snap-fit ​​block (631) that fits into the internal structural groove of the end plate (21).

6. The integrated protection structure for the energy storage module according to claim 2, characterized in that: The end plate (21) has multiple heat dissipation holes on the side away from the battery, and the heat dissipation holes pass through the inclined plate (22).

7. The integrated protection structure for the energy storage module according to claim 2, characterized in that: The housing (1) is provided with a thermally conductive solid or liquid filling structure, and the filling structure is in contact with the reinforcing structure and the battery at least simultaneously.

8. The integrated protection structure for the energy storage module according to claim 2, characterized in that: The end plate (21) includes a buckle plate (211) bent toward the side of the battery, the buckle plate (211) extending upward and bent toward the battery, the buckle plate (211) abutting against the battery.

9. The integrated protection structure for the energy storage module according to claim 2, characterized in that: The intermediate body (13) is provided with a slide rail (131) on the side near the base plate (23). The length direction of the slide rail (131) is parallel to the length direction of the intermediate body (13). A groove is provided on the slide rail (131). The base plate (23) is fixed with a slider that fits the shape of the groove and the slider is slidably connected to the slide rail (131).

10. The integrated protection structure for the energy storage module according to claim 1, characterized in that: It also includes insulating buffer sheets placed between batteries or on the outer wall.

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