a main base of the battery stack, a slave base of the battery stack, and an energy storage system

Abstract

The application relates to a main base of a battery stack, a slave base of the battery stack and an energy storage system, wherein two side walls of the main base of the battery stack along a first direction are respectively formed into a first side wall and a second side wall, the first side wall is provided with a first groove, the second side wall is provided with a second groove, the first groove is provided with a main grounding point, and the second groove is provided with a connecting assembly; a top wall of the main base is further provided with a first plug-in terminal, the first plug-in terminal is used for electrically connecting with a power module arranged above the main base, the power module comprises a battery module or a control module; and the first direction is perpendicular to a height direction of the main base. According to the scheme, the groove structure is arranged on the two side walls of the base to perform wiring operation, and safety protection and aesthetic appearance are improved.

Description

Technical Field

[0001] This application relates to the field of energy storage system technology, specifically to a main base for a battery stack, a slave base for a battery stack, and an energy storage system. Background Technology

[0002] The battery stack of an energy storage system includes a base and power modules such as battery modules and control modules located on top of the base. Wiring is required inside the base or between the base and adjacent bases to achieve electrical connection. In related technologies, the wiring cables are directly connected to the outer wall of the base or connected to the outer wall of the base in a protruding manner, which affects safety protection and aesthetics. Utility Model Content

[0003] This application provides a main base for a battery stack, a slave base for a battery stack, and an energy storage system. The structure of grooves on both sides of the base facilitates wiring operations, improving safety and aesthetics.

[0004] This application provides a main base for a battery stack. The main base has a first sidewall and a second sidewall formed on its two sidewalls along a first direction. The first sidewall has a first groove, and the second sidewall has a second groove. The first groove has a main grounding point, and the second groove has a connecting component. The top wall of the main base also has a first plug-in terminal for electrical connection to a power module located above the main base. The power module includes a battery module or a control module. The first direction is perpendicular to the height direction of the main base.

[0005] In some embodiments, at least one of the first sidewall and the second sidewall is detachably connected to a decorative panel, the decorative panel covering the first groove or the second groove.

[0006] In some embodiments, the connection assembly includes a communication terminal, an auxiliary power supply terminal, a grounding connection point, and two power terminals.

[0007] In some embodiments, the main base further includes a shorting component for shorting the two power terminals.

[0008] This application also provides a slave base for a battery stack, wherein the slave base has a third side wall and a fourth side wall formed on its two side walls along a first direction, the third side wall having a third groove and the fourth side wall having a fourth groove, and connecting components being provided in the third groove and the fourth groove, the connecting components being used to electrically connect to adjacent bases arranged along the first direction; the top wall of the slave base also has a second plug-in terminal, the second plug-in terminal being used to electrically connect to a power module disposed above the slave base, the power module including a battery module or a control module; the first direction is perpendicular to the height direction of the slave base.

[0009] In some embodiments, the connection assembly includes a communication terminal, an auxiliary power supply terminal, a grounding connection point, and two power terminals.

[0010] This application also provides an energy storage system, including a main battery stack, the main battery stack including a main base as described in any one of the claims, power modules being stacked on top of the main base, the main base and the power modules being plugged in and connected via a first plug-in terminal; a grounding wire being connected to the main grounding point of the main base; and two power terminals of the connection assembly of the main base being connected via a shorting component.

[0011] In some embodiments, the first sidewall and the second sidewall are respectively fitted with decorative panels, which cover the first groove and the second groove.

[0012] This application also provides an energy storage system, including a main battery stack and at least one slave battery stack arranged at intervals along a first direction. The main battery stack includes a main base as described in any one of the claims, and each of the slave battery stacks is located on the same side of the main battery stack. A grounding wire is connected to the main grounding point of the main base. The connection components between the main battery stack and the slave battery stack, as well as between the connection components of two adjacent slave battery stacks, are respectively connected by connecting wires. Two power terminals on the sidewall of the slave base furthest from the main base are connected by a shorting component.

[0013] In some embodiments, the energy storage system further includes a protective cover, which is detachably connected between the main base and the slave base and between two adjacent slave bases, wherein the connecting lines between the main base and the slave base and the connecting lines between two adjacent slave bases are all located within the corresponding protective cover.

[0014] The main base, slave base, and energy storage system of the battery stack provided in this application have the following technical advantages:

[0015] Due to the first groove, the main grounding point of the main base is located within the first groove, preventing it from protruding from the first sidewall. Similarly, due to the second groove, the connecting components of the main base are located within the second groove, preventing them from protruding from the second sidewall. This results in a smoother and more aesthetically pleasing appearance for both the first and second sidewalls of the main base. Furthermore, the main grounding point and connecting components do not occupy external space, reducing the required installation space for the main base. The grooves also protect the internally located main grounding point and connecting components, enhancing safety and security.

[0016] Furthermore, since the first and second sidewalls are two sidewalls of the main base arranged opposite each other along the first direction, if the main battery stack with the main base is applied to an energy storage system with multiple battery stacks (including the main battery stack and at least one slave battery stack), the multiple battery stacks are arranged in parallel along the first direction. The connection component located on the second sidewall can be electrically connected to the base (i.e., the slave base) of the adjacent slave battery stack. Since the slave battery stack is located on the side of the main battery stack facing the second sidewall, placing the connection component for connecting to the slave battery stack on the second sidewall can facilitate the connection with the slave base, reduce the bending requirements of the connection wire, reduce the length of the connection wire, reduce costs, and improve the stability and reliability of the connection wire. Operators can perform wiring operations in the space between the main base and the slave base without changing the position, which can complete the wiring operation between the main base and the slave base. The operation is more convenient and can effectively improve the wiring efficiency.

[0017] The main base is connected to the power module via the first plug-in terminal and to the slave base of the adjacent slave battery stack via the connecting component. This eliminates the need for a separate junction box, simplifies the product wiring structure, reduces assembly time, improves assembly efficiency, and effectively reduces costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main base of the battery stack provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the main base of the battery stack from another perspective;

[0020] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the battery stack from the base provided in the embodiments of this application;

[0022] Figure 5 This is a structural schematic diagram of the battery stack from another perspective, viewed from the base.

[0023] Figure 6 This is a schematic diagram of the structure of an energy storage system provided in an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of another energy storage system provided in an embodiment of this application;

[0025] Figure 8 yes Figure 7 Enlarged view of B in the middle;

[0026] Figure 9 yes Figure 7 The main view.

[0027] Appendix Figures 1-9 The reference numerals in the attached figures are explained as follows:

[0028] 100 Main battery stack; 200 Slave battery stack; 300 End battery stack; 310 End base; 400 Protective cover; 410 First cover; 420 Second cover;

[0029] 1 Main base, 11 First side wall, 12 First groove, 13 Second side wall, 14 Second groove, 15 Main grounding point, 16 First plug-in terminal;

[0030] 2 from the base, 21 the third side wall, 22 the third groove, 23 the fourth side wall, 24 the fourth groove, 25 the second plug-in terminal;

[0031] 3. Connecting components; 31. Power terminals; 32. Communication terminals; 33. Auxiliary power supply terminals; 34. Grounding connection point;

[0032] 4 trim panels, 41 perforations;

[0033] 5 power module, 51 control module, 52 battery module;

[0034] 6. Connecting wire, 61. Grounding wire, 62. Communication wire, 63. Auxiliary power supply wire, 64. Power interconnection cable;

[0035] 7 sealing components;

[0036] 8. Shorting components;

[0037] 9-directional structure;

[0038] 10 supporting legs. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] The battery stack of an energy storage system includes a base and power modules located on top of the base. Wiring is required between the base and the power modules to achieve electrical connection. Furthermore, when the energy storage system includes multiple battery stacks, wiring is also required between the bases of each battery stack to achieve electrical connection. In related technologies, the wiring cables are directly connected to the outer wall of the base or are connected to the outer wall of the base in a protruding manner, which affects safety protection and aesthetics.

[0041] This application provides a main base for a battery stack. For a battery stack with this main base 1, it is convenient for operators to perform wiring operations, effectively improving wiring efficiency. Furthermore, the connecting wires do not protrude from the outer wall of the main base 1, enhancing safety protection and aesthetics.

[0042] like Figure 1 As shown, the top wall of the main base 1 is provided with a first plug-in terminal 16. This first plug-in terminal 16 is used for electrical connection with the power module 5 located above the main base 1, so as to realize inter-layer communication and electrical connection between the main base 1 and the power module 5. The power module 5 above the main base 1 includes a battery module 52 or a control module 51. During installation, the power module 5 can be directly installed on the top of the main base 1, and the plug-in connection can be directly achieved through the first plug-in terminal 16 without the need for connection through other connecting wires, thereby simplifying the connection operation and improving the connection efficiency.

[0043] like Figure 1 and Figure 2 As shown, the main base 1 has a first sidewall 11 and a second sidewall 13 formed on two sidewalls along a first direction. The first direction is perpendicular to the height direction of the main base 1. The first sidewall 11 is provided with a first groove 12, and a main grounding point 15 is provided in the first groove 12. The second sidewall 13 is provided with a second groove 14, and a connecting component 3 is provided in the second groove 14. The connecting component 3 can be used to electrically connect with an adjacent base arranged along the first direction.

[0044] Due to the first groove 12, the main grounding point 15 of the main base 1 is located within the first groove 12, so that the main grounding point 15 does not protrude from the first side wall 11. Due to the second groove 14, the connecting component 3 of the main base 1 is located within the second groove 14, so that the connecting component 3 does not protrude from the second side wall 13. As a result, the first side wall 11 and the second side wall 13 of the main base 1 have a relatively flat and aesthetically pleasing appearance. Furthermore, the main grounding point 15 and the connecting component 3 do not occupy external space, thereby reducing the installation space requirements of the main base 1. Protecting the main grounding point 15 and the connecting component 3 located inside through the grooves also improves safety protection.

[0045] Furthermore, since the first sidewall 11 and the second sidewall 13 are two sidewalls of the main base 1 arranged opposite each other along the first direction, if the main battery stack 100 with the main base 1 is applied to an energy storage system with multiple battery stacks (including the main battery stack 100 and at least one slave battery stack 200), the multiple battery stacks are arranged in parallel along the first direction. The connection component 3 provided on the second sidewall 13 can be electrically connected to the base (i.e., slave base 2) of the adjacent slave battery stack 200. Since the slave battery stack 200 is located on the side of the main battery stack 100 facing the second sidewall 13, the connection component 3 for connecting with the slave battery stack 200 is provided on the second sidewall 13, which can facilitate the connection with the slave base 2, reduce the bending requirements of the connection line 6, reduce the length of the connection line 6, reduce costs, and improve the stability and reliability of the connection line 6. The operator can perform wiring operations in the space between the main base 1 and the slave base 2 without changing the position, which can complete the wiring operation between the main base 1 and the slave base 2. The operation is more convenient and can also effectively improve the wiring efficiency.

[0046] In this embodiment, the main base 1 is connected to the power module 5 through the first plug-in terminal 16, and is connected to the slave base 2 of the adjacent slave battery stack 200 through the connecting component 3. There is no need to set up a junction box, which can simplify the product wiring structure, reduce assembly time, improve assembly efficiency and effectively reduce costs.

[0047] like Figure 1 and Figure 2 As shown, at least one of the first sidewall 11 and the second sidewall 13 of the main base 1 is provided with a decorative panel 4. The first sidewall 11 may be detachably connected with the decorative panel 4, the second sidewall 13 may be detachably connected with the decorative panel 4, or the first sidewall 11 and the second sidewall 13 may be detachably connected with the decorative panel 4 respectively.

[0048] The first sidewall 11 is detachably connected to the corresponding trim panel 4 and can cover the first groove 12 when connected. The second sidewall 13 is detachably connected to the corresponding trim panel 4 and can cover the second groove 14 when connected.

[0049] By installing the decorative panel 4 on the first side wall 11 and the second side wall 13, the appearance of the main base 1 can be made neat, and the decorative panel 4 can also provide protection for the main grounding point 15 located in the first groove 12 and the connecting component 3 located in the second groove 14.

[0050] The decorative panel 4, the first side wall 11, and the second side wall 13 are all detachably connected, which facilitates wiring operations, and the connection method is not limited. For example, it can be connected by snap-fit ​​or by bolts.

[0051] When no wiring operation is performed on the main base 1, the decorative panel 4 can be installed on the main base 1 to provide protection for the main grounding point 15 and the connecting component 3, and also to prevent dust. When wiring, the decorative panel 4 can be opened or removed. After the wiring of the main base 1 is completed, the decorative panel 4 is installed. The decorative panel 4 installed on the first side wall 11 can be provided with through holes 41 so that the grounding wire 61 connected to the main grounding point 15 can pass through the through holes 41.

[0052] like Figure 3 and Figure 4 As shown, the connection component 3 includes a power terminal block 31, a communication terminal block 32, an auxiliary power supply terminal block 33, and a grounding connection point 34, and is connected to the connection component 3 of the adjacent slave base 2 via corresponding connection lines 6. The grounding connection point 34 is connected to the grounding connection point 34 of the adjacent slave base 2 via a grounding wire 61 to achieve grounding continuity. The communication terminal block 32 is connected to the communication terminal block 32 of the slave base 2 via a communication line 62. The auxiliary power supply terminal block 33 is connected to the auxiliary power supply terminal block 33 of the slave base 2 via an auxiliary power supply line 63. There are two power terminals 31, and the adjacent slave base 2 also has two corresponding power terminals 31. The two power terminals 31 of the main base 1 and the two power terminals 31 of the slave base 2 are connected via power interconnection cables 64 to achieve power connection.

[0053] like Figure 3 As shown, at least one of the communication terminal 32, auxiliary power supply terminal 33, and grounding connection point 34 is detachably connected to a sealing element 7. When the main base 1 is not connected, or when the main battery stack 100 with the main base 1 is used alone and not connected to the slave battery stack 200, the communication terminal 32, auxiliary power supply terminal 33, and grounding connection point 34 can be sealed by the sealing element 7 to provide protection for each terminal. When the main battery stack 100 needs to be connected to the slave battery stack 200, the sealing element 7 can be removed, which is convenient and flexible.

[0054] like Figure 3 As shown, the main base 1 also includes a shorting component 8, which is used to short-circuit two power terminals 31. When the main base 1 needs to be connected to the slave base 2, the two power terminals 31 of the main base 1 are respectively connected to the two power terminals 31 of the slave base 2. When the main battery stack 100 including the main base 1 is used alone, the main base 1 does not need to be connected to the slave base 2. At this time, the two power terminals 31 of the main base 1 can be connected through the shorting component 8 to achieve a closed-loop power supply. At this time, the main battery stack 100 can be used alone, which is flexible.

[0055] like Figure 1 and Figure 2As shown, the top wall of the main base 1 is also provided with a guide structure 9, and the bottom wall of the power module 5 located above the main base 1 is correspondingly provided with a mating structure. When the power module 5 and the main base 1 are stacked, the guide structure 9 and the mating structure work together to provide guidance for the installation of the power module 5, so that the wiring part at the bottom of the power module 5 can be plugged into the first plug-in terminal 16 on the top wall of the main base 1. The guide structure 9 facilitates the installation operation between the power module 5 and the main base 1, reduces the frequency of repeated adjustments by the operator, and improves installation efficiency.

[0056] like Figure 1 and Figure 2 As shown, the bottom of the main base 1 is also provided with support legs 10. The support legs 10 are used to provide support for the main base 1 to improve stability. Multiple support legs 10 are provided, and each support leg 10 is arranged at intervals along the bottom circumference of the main base 1.

[0057] This application also provides a battery stack slave base, such as Figure 4 and Figure 5 As shown, the top wall of the base 2 of the battery stack is also provided with a second plug-in terminal 25. The second plug-in terminal 25 is used to electrically connect to the power module 5 located above the base 2. The power module 5 above the base 2 includes a battery module 52 or a control module 51. During installation, the power module 5 can be directly installed above the base 2, and the plug-in connection can be directly achieved through the second plug-in terminal 25 without the need for connection through other connecting wires 6, thereby simplifying the connection operation and improving the connection efficiency.

[0058] like Figure 4 and Figure 5 As shown, the battery stack has a third sidewall 21 and a fourth sidewall 23 formed on two sidewalls along the first direction from the base 2. The first direction is perpendicular to the height direction from the base 2. The third sidewall 21 is provided with a third groove 22. The third groove 22 and the fourth groove 24 are respectively provided with connecting components 3. The connecting components 3 can be used to electrically connect adjacent bases arranged along the first direction.

[0059] The connecting component 3 of the base 2 is located in the third groove 22 and the fourth groove 24, so that the connecting component 3 does not protrude from the third side wall 21 or the fourth side wall 23. This makes the third side wall 21 and the fourth side wall 23 of the base 2 have a flatter and more aesthetically pleasing appearance. The setting of the connecting component 3 does not occupy external space, thereby reducing the installation space requirements of the base 2.

[0060] Furthermore, since the third sidewall 21 and the fourth sidewall 23 are two sidewalls that are arranged opposite each other from the base 2 along the first direction, when the slave battery stack 200 with the slave base 2 is applied to an energy storage system with multiple battery stacks (including the main battery stack 100 and at least one slave battery stack 200), the multiple battery stacks are arranged in parallel along the first direction. The connecting component 3 can be electrically connected to the adjacent base (the main base 1 or the slave base 2). Since the connecting component 3 is located on the third sidewall 21 or the fourth sidewall 23 facing the adjacent battery stack, it can facilitate the connection between the slave base 2 and the adjacent base. It can also reduce the bending requirements of the connecting wire 6, reduce the length of the connecting wire 6, reduce costs, and improve the stability and reliability of the connecting wire 6. Operators can perform wiring operations between the slave base 2 and the main base 1 and between adjacent slave bases 2 without changing positions. The operation is more convenient and can also effectively improve wiring efficiency.

[0061] The base 2 is connected to the power module 5 via the second plug-in terminal 25, and to the adjacent main base 1 or slave base 2 via the connecting component 3. No additional junction box is required, which simplifies the product wiring structure, reduces installation time, improves installation efficiency, and effectively reduces costs.

[0062] like Figure 4 and Figure 5 As shown, the connecting component 3 of base 2 is the same as the connecting component 3 of main base 1, including power terminals 31, communication terminals 32, auxiliary power supply terminals 33, and grounding connection points 34, and is connected to the connecting components 3 of adjacent bases through corresponding connecting lines 6. Specifically, the grounding connection point 34 is connected to the grounding connection point 34 of the adjacent base through a grounding wire 61 to achieve grounding continuity. The communication terminal 32 is connected to the communication terminal 32 of the adjacent base through a communication line 62. The auxiliary power supply terminals 33 are connected to the auxiliary power supply terminals 33 of the adjacent base through an auxiliary power supply line 63. There are two power terminals 31, and the adjacent base also has two corresponding power terminals 31. The two power terminals 31 of base 2 and the two power terminals 31 of the adjacent base are connected through power interconnection cables 64 to achieve power connection.

[0063] A sealing element 7 is detachably connected to at least one of the communication terminal 32, auxiliary power supply terminal 33, and grounding connection point 34 of the connection assembly 3 of the base 2. The base 2 may also include a shorting component 8 for shorting the power terminal 31.

[0064] like Figure 4 and Figure 5As shown, a guide structure 9 is provided on the top wall of the base 2 for cooperating with the power module 5 located above the base 2 to facilitate the assembly between the power module 5 and the base 2. A support leg 10 is provided at the bottom of the base 2 to provide support for the base 2 and improve stability.

[0065] This embodiment also provides an energy storage system, such as Figure 6 As shown, the energy storage system includes a main battery stack 100, which includes a main base 1 as described above. Power modules 5 are stacked on top of the main base 1. The power modules 5 include, but are not limited to, a control module 51 and at least one battery module 52. The battery modules 52 are located between the control module 51 and the main base 1. The number of battery modules 52 can be set according to the actual situation. The main base 1 and the adjacent power modules 5 are connected by a first plug-in terminal 16, and two adjacent power modules 5 are electrically connected by plugging.

[0066] The energy storage system has only a main battery stack 100 and no slave battery stack 200. At this time, the main grounding point 15 of the first side wall 11 of the main base 1 is connected to the grounding wire 61 and grounded through the grounding wire 61. In the connection assembly 3 of the second side wall 13 of the main battery stack 100, the two power terminals 31 are connected by a shorting component 8 to realize the power closed loop.

[0067] The technical effects of the energy storage system, including the main battery stack 100, are similar to those of the main base 1 mentioned above, and will not be repeated here to save space.

[0068] In this energy storage system, the communication terminal 32, auxiliary power supply terminal 33, and grounding connection point 34 of the connecting assembly 3 can be sealed with sealing components 7 to provide protection for each terminal. At this time, decorative panels 4 can be installed on the first sidewall 11 and the second sidewall 13 respectively, covering the first groove 12 and the second groove 14 to provide protection and dust prevention. The decorative panel 4 on the first sidewall 11 can also be provided with a through hole 41 so that the grounding wire 61 connected to the main grounding point 15 can pass through the through hole 41 to ground.

[0069] This embodiment also provides an energy storage system, such as Figure 7 , Figure 8 and Figure 9 As shown, the energy storage system includes a main battery stack 100 and at least one slave battery stack 200. The main battery stack 100 includes a main base 1 as described above, and the slave battery stack 200 includes a slave base 2 as described above. Each slave battery stack 200 is arranged sequentially at intervals along a first direction on the same side of the main battery stack 100. The number of slave battery stacks 200 can be set according to actual conditions; it can be one, two, or more, offering good flexibility.

[0070] The main battery stack 100 also includes a power module 5 stacked on top of the main base 1. The power module 5 is connected to the main base 1 via a first plug-in terminal 16. The slave battery stack 200 also includes a power module 5 stacked on top of the slave base 2. The power module 5 is connected to the slave base 2 via a second plug-in terminal 25.

[0071] The main base 1 and the secondary base 2 are connected by a connecting line 6, and adjacent secondary base 2 connecting components 3 are also connected by a connecting line 6.

[0072] The end battery stack 200 located at the end is the end battery stack 300, and the end base 2 located at the end is the end base 310. The end base 310 refers to the end base 2 furthest from the main base 1 in the energy storage system. The third sidewall 21 of the end base 310 is positioned facing the main base 1. The connecting assembly 3 of the third sidewall 21 is connected to the connecting assembly 3 of the adjacent battery stack via a connecting line 6. The fourth sidewall 23 of the end base 310 is positioned away from the main base 1. In the connecting assembly 3 of the fourth sidewall 23, such as... Figure 8 As shown, the communication terminal 32, auxiliary power supply terminal 33, and grounding connection point 34 can be blocked by the sealing component 7, and the two power terminals 31 can be shorted by the shorting component 8 to achieve a closed-loop power supply. Furthermore, the fourth sidewall 23 can also have its fourth groove 24 blocked by the decorative panel 4. The main grounding point 15 of the first sidewall 11 of the main battery stack 100 is grounded through the grounding wire 61. The first sidewall 11 is fitted with the decorative panel 4, and the decorative panel 4 installed on the first sidewall 11 is also provided with a through hole 41 so that the grounding wire 61 connected to the main grounding point 15 can pass through the through hole 41 to be grounded.

[0073] The technical effects of the energy storage system, including the main battery stack 100 and the slave battery stack 200, are similar to those of the main base 1 and the slave base 2 mentioned above. To save space, they will not be described in detail here.

[0074] like Figure 7 and Figure 9 As shown, the energy storage system also includes a protective cover 400, which is located between two adjacent bases. The protective cover 400 is detachably connected between the main base 1 and the slave base 2, and the protective cover 400 is detachably connected between two adjacent slave bases 2. The connecting components 3 of the two adjacent bases are connected by a connecting line 6. The protective cover 400 can protect the connecting line 6 and prevent the connecting line 6 from being disconnected due to collisions with external foreign objects, thereby improving the stability of the connection of the connecting line 6.

[0075] The protective cover 400 is also equipped with a cable tray, and each connecting wire 6 is arranged along the corresponding cable tray, which improves the neatness of the connecting wire 6, avoids the mess of the connecting wire 6, and facilitates wiring and subsequent maintenance operations.

[0076] The protective cover 400 includes a first cover 410 and a second cover 420. The first cover 410 and the second cover 420 can be arranged along the height direction or along a second direction, which is perpendicular to the first direction and the height direction. After the battery stacks are connected by the connecting wire 6, the first cover 410 and the second cover 420 are installed so that the connecting wire 6 is located within the protective space formed by the first cover 410 and the second cover 420.

[0077] The connection between the protective cover 400 and the base is the same as the connection between the trim panel 4 and the base, so as to improve the versatility of the structure of the base for connecting with the trim panel 4.

[0078] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0079] 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 application, "multiple" means two or more, unless otherwise explicitly specified.

[0080] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A main base for a battery stack, characterized in that, The main base (1) forms a first side wall (11) and a second side wall (13) on its two side walls along the first direction. The first side wall (11) is provided with a first groove (12), and the second side wall (13) is provided with a second groove (14). The first groove (12) is provided with a main grounding point (15), and the second groove (14) is provided with a connecting component (3). The top wall of the main base (1) is also provided with a first plug-in terminal (16), which is used to electrically connect to the power module (5) located above the main base (1). The power module (5) includes a battery module (52) or a control module (51). The first direction is perpendicular to the height direction of the main base (1).

2. The main base of the battery stack according to claim 1, characterized in that, At least one of the first sidewall (11) and the second sidewall (13) is detachably connected to a decorative panel (4), which covers the first groove (12) or the second groove (14).

3. The main base of the battery stack according to claim 1, characterized in that, The connection component (3) includes a communication terminal (32), an auxiliary power supply terminal (33), a grounding connection point (34), and two power terminals (31).

4. The main base of the battery stack according to claim 3, characterized in that, The main base (1) also includes a shorting component (8) for shorting the two power terminals (31).

5. A base for a battery stack, characterized in that, The base (2) forms a third sidewall (21) and a fourth sidewall (23) on its two sidewalls along the first direction. The third sidewall (21) is provided with a third groove (22), and the fourth sidewall (23) is provided with a fourth groove (24). The third groove (22) and the fourth groove (24) are respectively provided with connecting components (3). The connecting components (3) are used to electrically connect adjacent bases arranged along the first direction. The top wall of the base (2) is also provided with a second plug-in terminal (25), which is used to electrically connect to the power module (5) located above the base (2). The power module (5) includes a battery module (52) or a control module (51). The first direction is perpendicular to the height direction from the base (2).

6. The base of the battery stack according to claim 5, characterized in that, The connection component (3) includes a communication terminal (32), an auxiliary power supply terminal (33), a grounding connection point (34), and two power terminals (31).

7. An energy storage system, characterized in that, Includes a main battery stack (100), the main battery stack (100) includes a main base (1) as described in any one of claims 1-4, a power module (5) is stacked on top of the main base (1), and the main base (1) and the power module (5) are connected by a first plug-in terminal (16). The main grounding point (15) of the main base (1) is connected to a grounding wire (61). The two power terminals (31) of the connection assembly (3) of the main base (1) are connected by a shorting component (8).

8. The energy storage system according to claim 7, characterized in that, The first sidewall (11) and the second sidewall (13) are respectively equipped with decorative panels (4), which cover the first groove (12) and the second groove (14).

9. An energy storage system, characterized in that, The battery pack includes a main battery pack (100) and at least one slave battery pack (200) arranged at intervals along a first direction. The main battery pack (100) includes a main base (1) as described in any one of claims 1-4, and the slave battery pack (200) includes a slave base (2) as described in claim 5 or 6. Each of the slave battery packs (200) is located on the same side of the main battery pack (100). The main grounding point (15) of the main base (1) is connected to a grounding wire (61). The main battery stack (100) and the connecting components (3) of the slave battery stack (200) are connected by connecting lines (6), as are the connecting components (3) of two adjacent slave battery stacks (200). The two power terminals (31) on the side wall of the secondary base (2) furthest from the main base (1) are connected by a shorting member (8).

10. The energy storage system according to claim 9, characterized in that, The energy storage system also includes a protective cover (400), which is detachably connected between the main base (1) and the slave base (2) and between two adjacent slave bases (2). The connecting line (6) between the main base (1) and the slave base (2) and the connecting line (6) between two adjacent slave bases (2) are all located inside the corresponding protective cover (400).

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