energy storage device

Abstract

The present application relates to the technical field of energy storage device, particularly relates to a kind of energy storage device, including power supply component, power management module and conversion component are arranged from bottom to top in turn, conversion component is opened with the first positioning hole for fixing the upper end of first copper bar, power management module is opened with the second positioning hole and the third positioning hole for fixing the lower end of first copper bar, the top of power supply component is provided with convex part, convex part is provided with the fourth positioning hole, first bolt is connected with the fourth positioning hole by the second positioning hole thread, power management module is electrically connected with power supply component.Autumn effect is in that: by first copper bar support conversion component and first bolt, power management module is fixed on the convex part of power supply component, to form reasonable assembly layout.Conversion component can be electrically connected with power management module by first copper bar, reduce the number of wire harness.The setting of first positioning hole, second positioning hole, third positioning hole and fourth positioning hole, it is convenient to assemble modular component.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and in particular to an energy storage device. Background Technology

[0002] In related technologies, energy storage devices mainly refer to devices used to store electrical energy. After being charged, they can store hundreds of watt-hours of electricity and release this electrical energy for users to use when needed.

[0003] Because energy storage devices contain numerous internal wirings, their internal assembly layout is often chaotic, with complex and intertwined wiring harnesses. This improper assembly layout and tangled wiring can easily cause short circuits and fires. Summary of the Invention

[0004] One object of the present invention is to provide an energy storage device that reduces heat accumulation within the energy storage device and improves the heat dissipation efficiency of the energy storage device.

[0005] To achieve the above objectives, the present invention provides an energy storage device, including a power supply component, a power management module, a conversion component, a first copper busbar, and a first bolt. The power supply component, the power management module, and the conversion component are arranged sequentially from bottom to top. The conversion component has a first positioning hole for fixing the upper end of the first copper busbar. The power management module has a second positioning hole and a third positioning hole for fixing the lower end of the first copper busbar. The top of the power supply component has a protrusion with a fourth positioning hole. The first bolt is threadedly connected to the fourth positioning hole via the second positioning hole. The power management module is electrically connected to the power supply component.

[0006] In the above technical solution, the lower end face of the first copper busbar is provided with a first positioning part protruding from the lower end face, and the first positioning part is welded into the third positioning hole.

[0007] In the above technical solution, the third positioning hole is formed by connecting multiple side walls end to end, and a notch is provided at the joint position of two adjacent side walls.

[0008] In the above technical solution, the upper end face of the first copper busbar is provided with a second positioning part protruding from the upper end face, the second positioning part extends into the first positioning hole, the energy storage device includes a second bolt, the second bolt is threadedly connected to the second positioning part, and the head of the second bolt is connected to the upper end face of the first positioning hole.

[0009] In the above technical solution, the power supply assembly includes an insulating shell, an upper conductive sheet, a lower conductive sheet, and multiple batteries. The multiple batteries are disposed inside the insulating shell. The lower end of the upper conductive sheet is fixed to the insulating shell and abuts against the upper ends of the multiple batteries. The upper end of the upper conductive sheet is welded to the power management module. The lower end of the lower conductive sheet is fixed to the insulating shell and abuts against the lower ends of the multiple batteries. The upper end of the lower conductive sheet is welded to the power management module.

[0010] In the above technical solution, the insulating shell includes an insulating upper shell, an insulating lower shell, and an insulating inner liner. Multiple batteries are sandwiched between the insulating upper shell and the insulating inner liner. The lower end of the lower conductive sheet is sandwiched between the insulating inner liner and the insulating lower shell. The insulating inner liner has a first through hole. The lower end of the battery is fixed to the upper surface of the first through hole. The lower end of the lower conductive sheet extends into the first through hole to abut against the lower end of the battery. The insulating upper shell has a second through hole, and the upper end of the battery abuts against the lower end of the upper conductive sheet through the second through hole.

[0011] In the above technical solution, a lower insulating layer is provided between the lower end of the lower conductive sheet and the lower insulating shell, and an upper insulating layer is provided between the upper end of the upper conductive sheet and the upper insulating shell.

[0012] In the above technical solution, the power management module includes a circuit board, the upper end of the upper conductive sheet is soldered to the upper surface of the circuit board, and the upper end of the lower conductive sheet is soldered to the upper surface of the circuit board.

[0013] In the above technical solution, the conversion component includes a main control module, an inverter module, and a second copper busbar. The main control module is provided with the first positioning hole, and the second copper busbar is electrically connected to the main control module and the inverter module.

[0014] In the above technical solution, at least a portion of the first copper busbar is fitted with an insulating sleeve.

[0015] Compared with related technologies, the energy storage device of this invention has the following advantages: The conversion assembly is supported by a first copper busbar, and the power management module is fixed to the protrusion of the power component using a first bolt, forming a reasonable assembly layout and facilitating the assembly of modular components. The conversion assembly can be electrically connected to the power management module via the first copper busbar, reducing the number of wiring harnesses and optimizing the assembly layout of this invention. The design of the first, second, third, and fourth positioning holes facilitates the assembly of modular components and improves assembly accuracy. The power management module is fixed to the top of the power component via a threaded connection between the first bolt and the fourth positioning hole, which helps to prevent short circuits between the power management module and the power component. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an energy storage device according to one embodiment of the present invention;

[0017] Figure 2 This is an exploded view of the structure of an energy storage device according to one embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional view of the conversion component, power management module, and power component according to one embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of the first copper busbar according to one embodiment of the present invention;

[0020] Figure 5 This is a detailed schematic diagram of a portion of the structure of a power management module according to one embodiment of the present invention;

[0021] Figure 6 This is an exploded view of the power supply component according to one embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of a conversion component according to one embodiment of the present invention;

[0023] In the diagram, 1 is the power supply assembly; 101 is the protrusion; 11 is the insulating shell; 111 is the insulating upper shell; 112 is the insulating lower shell; 113 is the insulating liner; 12 is the battery; 13 is the upper conductive plate; and 14 is the lower conductive plate.

[0024] 2. Power management module; 21. Second positioning hole; 22. Third positioning hole;

[0025] 3. Conversion component; 31. Inverter module; 32. Main control module; 33. Second copper busbar;

[0026] 4. First copper busbar; 41. First positioning part; 42. Second positioning part;

[0027] 5. First bolt;

[0028] 6. Second bolt. Detailed Implementation

[0029] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0030] In the description of this invention, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0031] If the terms "first" and "second" are used only to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0032] like Figure 1 and Figure 2 As shown, a preferred embodiment of the present invention provides an energy storage device comprising a power supply component 1, a power management module 2, a conversion component 3, a first copper busbar 4, and a first bolt 5. The power supply component 1, the power management module 2, and the conversion component 3 are arranged sequentially from bottom to top. The conversion component 3 has a first positioning hole for fixing the upper end of the first copper busbar 4. The power management module 2 has a second positioning hole 21 and a third positioning hole 22 for fixing the lower end of the first copper busbar 4. The top of the power supply component 1 is provided with a protrusion 101, and the protrusion 101 is provided with a fourth positioning hole. The first bolt 5 is threadedly connected to the fourth positioning hole through the second positioning hole 21. The power management module 2 is electrically connected to the power supply component 1.

[0033] The power management module 2 is fixed to the protrusion 101 of the power assembly 1 by the first copper busbar 4 supporting the conversion component 3 and the first bolt 5, forming a reasonable assembly layout and facilitating the assembly of modular components. The conversion component 3 can be electrically connected to the power management module 2 through the first copper busbar 4, reducing the number of wires and optimizing the assembly layout of the invention. The first positioning hole, the second positioning hole 21, the third positioning hole 22, and the fourth positioning hole facilitate the assembly of modular components and improve assembly accuracy. The power management module 2 is fixed to the top of the power assembly 1 by the threaded connection between the first bolt 5 and the fourth positioning hole, which helps to avoid short circuits between the power management module 2 and the power assembly 1.

[0034] It is understood that in this embodiment, the power supply component 1 mainly stores electrical energy through the power management module 2 and relies on the conversion component 3 to release the stored electrical energy to the required devices.

[0035] like Figure 3 and Figure 4As shown, furthermore, the lower end face of the first copper busbar 4 is provided with a first positioning part 41 protruding from the lower end face, and the first positioning part 41 is welded into the third positioning hole 22. By connecting the first positioning part 41 and the third positioning hole 22 by welding, the first copper busbar 4 can be fixed to the power management module 2, which is beneficial to realize the connection between the upper end of the first copper busbar 4 and the conversion component 3.

[0036] like Figure 5 As shown, preferably, the third positioning hole 22 is formed by connecting multiple side walls end to end, and a notch is provided at the junction of two adjacent side walls. The notch is provided to facilitate the entry of flux into the gap formed between the side wall of the third positioning hole 22 and the first positioning part 41, thereby achieving fixation.

[0037] like Figure 3 and Figure 4 As shown, the upper end face of the first copper busbar 4 is provided with a second positioning part 42 protruding from the upper end face. The second positioning part 42 extends into the first positioning hole. The energy storage device includes a second bolt 6, which is threadedly connected to the second positioning part 42. The head of the second bolt 6 is connected to the upper end face of the first positioning hole.

[0038] Understandably, because welding improves the stability of the first copper busbar 4, the conversion assembly 3 can be directly placed on top of the first copper busbar 4 for assembly. The head of the second bolt 6 engages with the upper surface of the first positioning hole, allowing the first copper busbar 4, which is threaded thereto, to be fixed below the conversion assembly 3, thereby supporting the conversion assembly 3. Adjusting the engagement length of the second bolt 6 and the second positioning part 42 creates pressure between the upper surface of the first copper busbar 4 and the conversion assembly 3, thereby improving the stability of the connection between the first copper busbar 4 and the conversion assembly 3, thus achieving the electrical connection between the conversion assembly 3 and the power management module 2.

[0039] like Figure 6 As shown, the power supply assembly 1 further includes an insulating housing 11, an upper conductive sheet 13, a lower conductive sheet 14, and multiple batteries 12. The multiple batteries 12 are disposed inside the insulating housing 11. The lower end of the upper conductive sheet 13 is fixed to the insulating housing 11 and abuts against the upper end of the multiple batteries 12. The upper end of the upper conductive sheet 13 is welded to the power management module 2. The lower end of the lower conductive sheet 14 is fixed inside the insulating housing 11 and abuts against the lower end of the multiple batteries 12. The upper end of the lower conductive sheet 14 is welded to the power management module 2.

[0040] Understandably, the upper conductive sheet 13 abuts against the upper end of the battery 12, and the lower conductive sheet 14 abuts against the lower end of the battery 12, so that the power assembly 3 and the power management module 2 form a circuit. The power management module 2 can transfer the received electrical energy to the battery 12 for storage. The upper conductive sheet 13 and the lower conductive sheet 14 are fixed to the insulating housing 11 to prevent leakage. The upper ends of the upper conductive sheet 13 and the lower conductive sheet 14 are both connected to the power management module 2 by welding, which facilitates the formation of a circuit between the battery 12 and the power management module 2, allowing electrical energy to enter the battery 12 through the power management module 2 for storage.

[0041] like Figure 6 As shown, in one embodiment, the insulating shell 11 includes an insulating upper shell 111, an insulating lower shell 112, and an insulating inner liner 113. A plurality of batteries 12 are sandwiched between the insulating upper shell 111 and the insulating inner liner 113. The lower end of the lower conductive sheet 14 is sandwiched between the insulating inner liner 113 and the insulating lower shell 112. The insulating inner liner 113 is provided with a first through hole. The lower end of the battery 12 is fixed to the upper end face of the first through hole. The lower end of the lower conductive sheet 14 extends into the first through hole to abut against the lower end of the battery 12. The insulating upper shell 111 is provided with a second through hole. The upper end of the battery 12 abuts against the lower end of the upper conductive sheet 13 through the second through hole.

[0042] It is understandable that the lower end of the battery 12 is fixed to the upper end face of the first through hole, and the insulating upper shell 111 will exert pressure on the battery 12, so that the battery 12 is stably clamped between the insulating upper shell 111 and the insulating lower shell 112. When the lower end of the lower conductive sheet 14 is connected to the lower end of the fixed battery 12, it will not be subjected to the gravity of the battery 12 itself. This is beneficial to improve the stability of the connection between the lower conductive sheet 14 and the lower end of the battery 12, and also avoids the situation where the battery 12 will press down on the lower conductive sheet 14 under the action of gravity.

[0043] Furthermore, a lower insulating layer is provided between the lower end of the lower conductive sheet 14 and the lower insulating shell 112, and an upper insulating layer is provided between the upper end of the upper conductive sheet 13 and the upper insulating shell 111.

[0044] Understandably, the insulating layer further improves the insulation performance of the upper conductive sheet 13 and the lower conductive sheet 14 to prevent leakage.

[0045] Furthermore, the power management module 2 includes a circuit board, with the upper end of the upper conductive sheet 13 soldered to the upper surface of the circuit board, and the upper end of the lower conductive sheet 14 soldered to the upper surface of the circuit board.

[0046] Soldering the upper ends of the upper conductive sheet 13 and the lower conductive sheet 14 to the upper surface of the circuit board improves the safety performance of the invention. When the soldered points are subjected to downward pressure from an external force, they will not directly contact the upper end of the upper conductive sheet 13, thus preventing a short circuit.

[0047] like Figure 7 As shown, preferably, the conversion component 3 includes a main control module 32, an inverter module 31, and a second copper busbar 33. The main control module 32 is provided with a first positioning hole, and the second copper busbar 33 is electrically connected to the main control module 32 and the inverter module 31.

[0048] It is understood that the inverter module 31 is used to transmit electrical energy from the power supply component 1 to the interface on the main control module 32 in a suitable form to supply other devices. Electrically connecting the main control module 32 and the inverter module 31 via the second copper busbar 33 facilitates communication between the two to achieve corresponding functions. The arrangement of the second copper busbar 33 also reduces the number of wires in this invention.

[0049] Preferably, at least a portion of the first copper busbar 4 is fitted with an insulating sleeve. The insulating sleeve can prevent electrical sparks from being generated during operation after the first copper busbar 4 is electrically connected to the power management module 2 and the power assembly 1.

[0050] The assembly process of one embodiment of the present invention is as follows: the lower conductive sheet 14 is sandwiched between the insulating inner liner 113 and the insulating lower shell 112, and the battery 12 is sandwiched between the insulating inner liner 113 and the insulating upper shell 111. The upper conductive sheet 13 is fixed to the upper surface of the insulating upper shell 111 to complete the assembly of the power supply assembly 1. The first bolt 5 is threaded to the protrusion 101 on the insulating upper shell 111 through the second positioning hole 21 on the power management module 2 to fix the power management module 2 above the power supply assembly 1. The first positioning part 41 is welded into the third positioning hole 22, and the second bolt 6 is threaded to the second positioning part 42 through the first positioning hole of the conversion assembly 3 to complete the fixation of the conversion assembly 3.

[0051] An energy storage device of the present invention uses a first copper busbar 4 to support a conversion component 3 and a first bolt 5 to fix a power management module 2 to the protrusion 101 of a power component 1, forming a reasonable assembly layout and facilitating the assembly of modular components. The conversion component 3 can be electrically connected to the power management module 2 via the first copper busbar 4, reducing the number of wiring harnesses and optimizing the assembly layout of the present invention. The design of the first positioning hole, the second positioning hole 21, the third positioning hole 22, and the fourth positioning hole facilitates the assembly of modular components and improves assembly accuracy. The power management module 2 is fixed to the top of the power component 1 via a threaded connection between the first bolt 5 and the fourth positioning hole, which helps to prevent short circuits between the power management module 2 and the power component 1.

[0052] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An energy storage device, characterized by, The power supply assembly, the power management module and the conversion assembly are arranged in sequence from bottom to top, the conversion assembly is provided with a first positioning hole for fixing the upper end of the first copper bar, the power management module is provided with a second positioning hole and a third positioning hole for fixing the lower end of the first copper bar, the top of the power supply assembly is provided with a convex part, the convex part is provided with a fourth positioning hole, the first bolt is threadedly connected with the second positioning hole and the fourth positioning hole, and the power management module is electrically connected with the power supply assembly. The lower end surface of the first copper bar is provided with a first positioning part protruding from the lower end surface, and the first positioning part is welded in the third positioning hole. The upper end surface of the first copper bar is provided with a second positioning part protruding from the upper end surface, and the second positioning part extends into the first positioning hole, the energy storage device comprises a second bolt, the second bolt is threadedly connected with the second positioning part, and the head of the second bolt is in contact with the upper end surface of the first positioning hole. The conversion assembly comprises a master control module, an inverter module and a second copper bar, the master control module is provided with the first positioning hole, and the second copper bar is electrically connected with the master control module and the inverter module.

2. The energy storage device of claim 1, wherein, The third positioning hole is formed by a plurality of side walls connected in sequence, and a notch is arranged at the connection position of adjacent two side walls.

3. The energy storage device of claim 1, wherein, The power supply assembly comprises an insulating shell, an upper conductive sheet, a lower conductive sheet and a plurality of batteries, the plurality of batteries are arranged in the insulating shell, the lower end of the upper conductive sheet is fixed to the insulating shell and abuts against the upper ends of the plurality of batteries, the upper end of the upper conductive sheet is welded to the power management module, the lower end of the lower conductive sheet is fixed to the insulating shell and abuts against the lower ends of the plurality of batteries, and the upper end of the lower conductive sheet is welded to the power management module.

4. The energy storage device of claim 3, wherein, The insulating shell comprises an insulating upper shell, an insulating lower shell and an insulating inner liner, the plurality of batteries are clamped between the insulating upper shell and the insulating inner liner, the lower end of the lower conductive sheet is clamped between the insulating inner liner and the insulating lower shell, the insulating inner liner is provided with a first through hole, the lower end of the battery is fixed to the upper end surface of the first through hole, the lower end of the lower conductive sheet extends into the first through hole to abut against the lower end of the battery, and the insulating upper shell is provided with a second through hole, the upper end of the battery abuts against the lower end of the upper conductive sheet through the second through hole.

5. The energy storage device of claim 4, wherein, A lower insulating layer is arranged between the lower end of the lower conductive sheet and the insulating lower shell, and an upper insulating layer is arranged between the upper end of the upper conductive sheet and the insulating upper shell.

6. The energy storage device of claim 3, wherein, The power management module comprises a circuit board, the upper end of the upper conductive sheet is welded to the upper surface of the circuit board, and the upper end of the lower conductive sheet is welded to the upper surface of the circuit board.

7. The energy storage device according to any one of claims 1 to 6, wherein At least a part of the first copper bar is sleeved with an insulating sleeve.

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