Energy storage power supply

Abstract

The invention relates to the technology of energy storage equipment, and solves or relieves the problems of complex assembly and limited internal space of an energy storage power supply. The invention discloses an energy storage power supply. The energy storage power supply comprises a shell, a battery module, an inverter and a ventilation piece. A containing cavity is formed in the shell, and a plurality of first fixing grooves are formed in the inner wall of the containing cavity; the battery module is positioned in the accommodating cavity, the battery module comprises a plurality of battery cells, and one end of each battery cell is accommodated in the first fixing groove; the inverter is arranged in the accommodating cavity, and the inverter is electrically connected with the battery module; the ventilation piece is fixedly connected with the shell, the ventilation piece comprises a ventilation part and a fixing part which are integrally formed, the ventilation part forms one part of the shell and is provided with a ventilation hole communicated with the containing cavity, and the fixing part is located in the containing cavity and fixes one ends of the battery cells in the first fixing groove. According to the energy storage power supply, the assembly process of the energy storage power supply can be reduced, an additional bracket for fixing the battery cell is saved, and the space utilization rate of the energy storage power supply is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage devices, and particularly relates to an energy storage power supply. Background Art

[0002] Existing energy storage power supply products include a housing, a battery module and an inverter. The battery module assembles multiple battery cells into a module through two brackets and then fixes them inside the housing. The inverter is electrically connected to the battery module to achieve power output. Since the inverter generates a large amount of heat, ventilation plates are generally provided on the housing for air-cooling heat dissipation. Due to the complex ventilation hole structure of the ventilation plates, the ventilation plates are often formed independently and exist in pairs. They are generally installed on the housing after the battery module and the inverter are assembled.

[0003] The inventor has realized that there are many problems in the existing structure of this energy storage power supply: 1) The number of housings is relatively large, at least more than 5 housings, including: a first housing and a second housing forming an accommodation cavity, two ventilation plates and brackets; 2) The assembly process is complex. After fixing the battery cells on the housing through the brackets, the ventilation fins need to be fixed one by one, increasing the assembly and fastening steps. Summary of the Invention

[0004] An embodiment of the present invention provides an energy storage power supply to solve at least one of the above-mentioned technical problems.

[0005] An energy storage power supply provided by an embodiment of the present invention includes: A housing, an accommodation cavity is provided inside the housing, and a plurality of first fixing grooves are provided on the inner side wall of the accommodation cavity; A battery module, the battery module is located in the accommodation cavity, the battery module includes a plurality of battery cells, and one end of the battery cell is accommodated in the first fixing groove; An inverter, the inverter is arranged in the accommodation cavity, the inverter is electrically connected to the battery module, and; A ventilation member, the ventilation member is fixedly connected to the housing, the ventilation member includes an integrally formed ventilation part and a fixing part, the ventilation part forms a part of the housing and is provided with ventilation holes communicating with the accommodation cavity, the fixing part is located in the accommodation cavity, and the fixing part fixes one end of the plurality of battery cells to the first fixing groove.

[0006] In the above-mentioned energy storage power supply, the fixing part and the ventilation part are integrally formed, and the fixing part fixes one end of the plurality of battery cells to the first fixing groove provided on the inner side wall of the accommodation cavity, so that the battery cells can be effectively fixed and installed, the assembly process of the energy storage power supply can be reduced, and the additional brackets for fixing the battery cells can be saved, which is beneficial to improving the space utilization rate of the energy storage power supply.

[0007] In some embodiments, the fixing part is provided with a plurality of second fixing grooves, and the other end of the battery cell is received in the second fixing grooves.

[0008] In the above energy storage power supply, the second fixing grooves and the first fixing grooves respectively fix the two ends of the battery cells, so that a plurality of battery cells can be effectively fixed and installed in the accommodation cavity.

[0009] In some embodiments, the ventilation member includes two oppositely arranged ventilation parts, and the fixing part is connected to the two ventilation parts and is located between the two ventilation parts.

[0010] In the above energy storage power supply, the fixing part can be fixedly connected to the housing through the ventilation part, and the two oppositely arranged ventilation parts can form a convection channel.

[0011] In some embodiments, the fixing part is connected to the inner side wall of the accommodation cavity through a fastener to fix the plurality of battery cells in the first fixing grooves.

[0012] In the above energy storage power supply, the fixing part can be fixedly connected to the housing, which improves the installation reliability of the battery cells to a certain extent.

[0013] In some embodiments, the inverter is fixed on the fixing part, and the ventilation hole is directly opposite to the inverter.

[0014] In the above energy storage power supply, the inverter can be cooled.

[0015] In some embodiments, the housing includes a first shell and a second shell, the first shell is detachably connected to the second shell and together with the ventilation part encloses the accommodation cavity.

[0016] In the above energy storage power supply, it is convenient for installation or repair.

[0017] In some embodiments, the first shell and the second shell are connected to form the notch, the ventilation part is received in the notch, the peripheral wall of the notch is provided with a clamping groove, and the outer edge of the ventilation part is clamped in the clamping groove to fix the ventilation part in the notch.

[0018] In the above energy storage power supply, the ventilation member can be fixedly connected to the housing.

[0019] In some embodiments, the energy storage power supply further includes a plurality of first connection pieces and a plurality of second connection pieces, the battery cell includes a body, a first electrode and a second electrode, and the first electrode and the second electrode are respectively arranged at both ends in the length direction of the body; The bottom wall of the first fixing groove is provided with a first through hole, and the first electrode is directly opposite to the first through hole; The bottom wall of the second fixing groove is provided with a second through hole, and the second electrode is directly opposite to the second through hole; The first connecting piece is fixed to the outer side wall of the housing and electrically connects the first electrodes of a plurality of the battery cells, and the second connecting piece is fixed to the fixing portion and electrically connects the second electrodes of a plurality of the battery cells.

[0020] In the above energy storage power supply, the assembly process of the energy storage power supply can be reduced to a certain extent, and an additional bracket for fixing the battery cells can be saved.

[0021] In some embodiments, the energy storage power supply further includes a cover plate. A receiving groove is provided on the outer side wall of the housing. The first through hole penetrates through the bottom wall of the receiving groove. The first connecting piece is located in the receiving groove, and the cover plate is disposed on the outer side wall of the housing and covers the receiving groove.

[0022] In the above energy storage power supply, it is beneficial for the battery cells to supply energy to the electrical equipment as a whole and reduce the overall volume of the energy storage power supply.

[0023] In some embodiments, the energy storage power supply further includes a plurality of third connecting pieces. The battery cell includes a body, a first electrode, and a second electrode. The first electrode and the second electrode are provided at one end of the body; The bottom wall of the second fixing groove is provided with a third through hole and a fourth through hole. The first electrode is aligned with the third through hole, and the second electrode is aligned with the fourth through hole. The third connecting piece is fixed to the fixing portion, and the third connecting piece electrically connects the first electrode of the battery cell and the second electrode of the adjacent battery cell.

[0024] In the above energy storage power supply, the assembly process of the energy storage power supply can be reduced to a certain extent, and an additional bracket for fixing the battery cells can be saved.

[0025] The additional aspects and advantages of the embodiments of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0026] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic structural diagram of an energy storage power supply according to an embodiment of the present invention; Figure 2 is an exploded schematic diagram of an energy storage power supply according to an embodiment of the present invention; Figure 3 is another exploded schematic diagram of an energy storage power supply according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a battery module according to an embodiment of the present invention.

[0027] Description of the Main Element Reference Numerals: Housing - 10, first shell - 11, second shell - 12, notch - 13, first notch - 13a, second notch - 13b, accommodation cavity - 14, first fixing groove - 141, surrounding wall - 142, accommodation groove - 142a, air flow gap - 15, battery module - 20, battery cell - 21, body - 211, first electrode - 211a, second electrode - 211b, inverter - 30, ventilation component - 40, ventilation part - 41, ventilation hole - 411, first ventilation hole - 411a, second ventilation hole - 411b, fixing part - 42, battery management system - 50, main board - 60, panel - 70, interface - 71, button - 72, first connecting piece - 81, second connecting piece - 82, cover plate - 90, energy storage power supply - 100. Detailed Embodiment

[0028] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] The disclosure herein provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0033] Please refer to Figures 1 to 3 , an energy storage power supply 100 provided by an embodiment of the present invention includes a housing 10, a battery module 20, an inverter 30 and a ventilation member 40. An accommodation cavity 14 is provided in the housing 10, and a plurality of first fixing grooves 141 are provided on the inner side wall of the accommodation cavity 14. The battery module 20 is located in the accommodation cavity 14. The battery module 20 includes a plurality of battery cells 21, and one end of the battery cell 21 is received in the first fixing groove 141. The inverter 30 is disposed in the accommodation cavity 14, and the inverter 30 is electrically connected to the battery module 20. The ventilation member 40 is fixedly connected to the housing 10. The ventilation member 40 includes an integrally formed ventilation portion 41 and a fixing portion 42. The ventilation portion 41 forms a part of the housing 10 and is provided with ventilation holes 411 communicating with the accommodation cavity 14. The fixing portion 42 is located in the accommodation cavity 14, and the fixing portion 42 fixes one end of the plurality of battery cells 21 to the first fixing groove 141.

[0034] In the above energy storage power supply 100, the fixing portion 42 and the ventilation portion 41 are integrally formed, and the fixing portion 42 fixes one end of the plurality of battery cells 21 to the inner side wall of the accommodation cavity, so that the battery cells 21 can be effectively fixed and installed, the assembly process of the energy storage power supply 100 can be reduced, and the additional brackets for fixing the battery cells 21 can be saved, which is beneficial to improving the space utilization rate of the energy storage power supply 100.

[0035] Specifically, the energy storage power supply 100 further includes a battery management system 50. The battery module 20, the battery management system 50, and the inverter 30 are electrically connected. Optionally, the battery module 20 is located within the housing 10 of the energy storage power supply 100. In one embodiment, the battery module 20 may be formed by connecting a plurality of battery cells 21 in series, parallel, or a combination of both. A combination of both means that there are both parallel and series connections among the plurality of battery cells 21, and is used to store and release electrical energy.

[0036] The inverter 30 is used to convert the direct current (DC) stored in the battery module 20 into alternating current (AC), and to convert the alternating current input from an AC power source into direct current to charge the battery cells 21. During the discharging process, the battery cells 21 convert the stored chemical energy into direct electrical energy, and the inverter 30 converts the direct current output by the battery module 20 into alternating current for external devices to use.

[0037] The battery management system 50 is the management system of the energy storage power supply 100, and is used to monitor, control, and protect the safe and stable operation of the battery module 20. During the charging and discharging process, the battery management system 50 monitors the state of the battery module 20 and outputs corresponding control instructions to ensure the safe and stable operation of the battery module 20.

[0038] In the related art, with the increasingly fierce competition in the portable energy storage market, consumers' requirements for the performance of energy storage power supplies are also getting higher and higher. Especially in terms of the battery life, consumers expect to obtain longer and more stable power support to meet their diverse usage needs. This requires that while maintaining sufficient structural strength, the energy storage power supply needs to improve the energy density as much as possible to store more electrical energy within a limited volume. Existing energy storage power supply products include a housing, a battery module, and an inverter. The battery module assembles multiple battery cells into a module through two brackets and then fixes it inside the housing. The inverter is electrically connected to the battery module to achieve power output. Since the inverter generates a large amount of heat, ventilation plates are generally provided on the housing for air cooling. Due to the complex ventilation hole structure of the ventilation plates, the ventilation plates are often independently formed and exist in pairs, and are generally installed on the housing after the battery module and the inverter are assembled. The internal design of the above products occupies the precious internal space of the energy storage power supply, thus restricting the further improvement of the space utilization rate of the energy storage power supply to a certain extent. Therefore, a new internal structure of the energy storage power supply is needed to further optimize the space of the energy storage power supply, so as to improve the energy density of the energy storage power supply and reduce the overall weight and volume of the energy storage power supply.

[0039] In the embodiments of the present invention, please refer to Figure 2 and Figure 3, the length direction of the battery cell 21 is the up-down direction. At least a part of the housing 10 of the energy storage power supply 100 can enclose to form a receiving cavity 14 for receiving the battery cell 21. A plurality of battery cells 21 can be vertically placed in the receiving cavity 14, that is, placed along the up-down direction.

[0040] In one embodiment, the inner side wall of the receiving cavity 14 can be the bottom wall of the receiving cavity 14. Optionally, in Figure 2 and Figure 3 's embodiments, a plurality of first fixing grooves 141 are provided on the bottom wall of the receiving cavity 14, and one end of the battery cell 21 can be received in the first fixing groove 141.

[0041] The ventilation part 41 of the ventilation member 40 can enclose at least a part of the receiving cavity 14, and a plurality of ventilation holes 411 communicating with the receiving cavity 14 are provided on the ventilation part 41. The ventilation holes 411 can be used for components such as the inverter 30 and the battery module 20 to exchange heat with the outside for heat dissipation. The fixing part 42 is integrally formed with the ventilation part 41, and the fixing part 42 can fix one end of a plurality of battery cells 21 to the first fixing groove 141, which can reduce the use of fixing brackets, thus simplifying the internal structure of the energy storage power supply 100, reducing the assembly process of the energy storage power supply 100 and saving the additional brackets for fixing the battery cells 21, improving the space utilization rate of the energy storage power supply 100 to a certain extent, and realizing the lightweight design of the product.

[0042] In Figures 2 to 4 's embodiments, if the battery cell 21 is a cylindrical battery cell 21, then the first fixing groove 141 can be a cylindrical groove adapted to the battery cell 21. In one embodiment, the diameter of the cylindrical groove is correspondingly equal to the diameter of the battery cell 21, so that the battery cell 21 can be fixed in the cylindrical groove. In one embodiment, the diameter of the cylindrical groove can be slightly smaller than the diameter of the battery cell 21, so as to increase the fixing strength through interference fit. The diameter of the cylindrical groove of the first fixing groove 141 can be specifically defined according to the diameter of the battery cell 21, and the present invention does not make specific limitations on this.

[0043] It can be understood that the first fixing groove 141 can also be set to a triangular shape, a polygonal shape or other irregular shapes, and keep the diameter of its largest inscribed circle meet the above conditions.

[0044] In some embodiments, the first fixing groove 141 can be provided with ribs for interference fit with the battery cell 21, or can also be in the form of a clamp or a clip to fix the battery cell 21.

[0045] Optionally, in other embodiments, the battery cell 21 can also be a square battery cell 21. In the case where the battery cell 21 is a square battery cell 21, the shape of the first fixing groove 141 is also a corresponding square.

[0046] Optionally, please combineFigure 3 On the inner side wall of the accommodation cavity 14, a surrounding wall 142 is further provided. The surrounding wall 142 and the side wall of the accommodation cavity 14 can enclose an accommodation groove 142a to accommodate a plurality of first fixing grooves 141, thereby increasing the fixing strength of the first fixing grooves 141 on the battery cells 21.

[0047] Optionally, the first fixing groove 141 can be integrally formed with the housing 10 or connected to the bottom wall of the accommodation cavity 14 in other fixed connection ways, so that the battery cells 21 and the housing 10 are relatively fixedly connected, and the overall strength is improved to a certain extent.

[0048] The number of the first fixing grooves 141 is the same as the number of the battery cells 21, so that one end of all the battery cells 21 can be fixed in one first fixing groove 141. The number of the first fixing grooves 141 can be specifically defined according to the actual situation, and the present invention does not make specific limitations thereto. In one example, the number of the first fixing grooves 141 and the number of the battery cells 21 are both 13.

[0049] The fixing part 42 is arranged in the accommodation cavity 14 and separates the battery module 20 and the inverter 30. The battery module 20 is located below the fixing part 42 and is electrically connected to the inverter 30 located above the fixing part 42. The fixing part 42 fixes the plurality of battery cells 21 to the first fixing grooves 141, and the fixing part 42 is connected to the housing 10 through the ventilation part 41. The fixing part 42 and the bottom wall of the accommodation cavity 14 jointly provide fixing support for the battery cells 21, so that the battery cells 21 can be effectively fixed.

[0050] It can be understood that in other embodiments, the battery cells 21 can also be placed horizontally or in other directions in the accommodation cavity 14. When the battery cells 21 are placed horizontally, the fixing part 42 can jointly fix the battery cells 21 with one of the front, rear, left and right side walls of the accommodation cavity 14.

[0051] In some embodiments, the fixing part 42 is provided with a plurality of second fixing grooves (not shown in the figure), and the other end of the battery cell 21 is accommodated in the second fixing groove.

[0052] In this way, the second fixing groove and the first fixing groove 141 respectively fix the two ends of the battery cells 21, so that the plurality of battery cells 21 can be effectively fixed and installed in the accommodation cavity 14.

[0053] Specifically, in Figure 2 and Figure 3In an embodiment, a plurality of first fixing grooves 141 are provided on the bottom wall of the accommodation cavity 14. One end of the battery cell 21 can be received in the first fixing groove 141. A plurality of second fixing grooves are provided on the side of the fixing portion 42 facing the battery module 20. The second fixing grooves are disposed opposite to the first fixing grooves 141. The other end of the battery cell 21 is received in the second fixing groove. Therefore, the second fixing groove and the first fixing groove 141 can effectively fix the battery cell 21 together without first assembling the battery module 20 and then installing it in the housing 10, so that the battery cell 21 is directly integrated in the housing 10, reducing the assembly process to a certain extent, and at the same time saving an additional bracket for fixing the battery cell 21, thereby improving the space utilization rate inside the energy storage power supply 100 to a certain extent.

[0054] In Figures 2 to 4 In an embodiment, if the battery cell 21 is a cylindrical battery cell 21, the second fixing groove can be a cylindrical groove adapted to the battery cell 21. In one embodiment, the diameter of the cylindrical groove corresponds to the diameter of the battery cell 21, so that the battery cell 21 can be fixed in the cylindrical groove. In one embodiment, the diameter of the cylindrical groove can be slightly smaller than the diameter of the battery cell 21, so as to increase the fixing strength through interference fit. Optionally, the diameter of the cylindrical groove of the second fixing groove and the diameter of the cylindrical groove of the first fixing groove 141 can be equal or unequal. The diameter of the cylindrical groove of the second fixing groove can be specifically defined according to the diameter of the battery cell 21, and the present invention does not make specific limitations in this regard.

[0055] It can be understood that the second fixing groove can also be set to a triangular shape, a polygonal shape or other irregular shapes, and the diameter of its maximum inscribed circle is kept to meet the above conditions. In some embodiments, the second fixing groove can be provided with a rib that interferes with the battery cell 21, or can be in the form of a clamp or clip to fix the battery cell 21. Optionally, in other embodiments, the battery cell 21 can also be a square battery cell 21. In the case where the battery cell 21 is a square battery cell 21, the shape of the second fixing groove is also a corresponding square.

[0056] Optionally, the second fixing groove can be integrally formed with the fixing portion 42 or connected to the side of the fixing portion 42 facing the battery module 20 in other fixed connection manners, so as to relatively fixedly connect the battery cell 21 with the housing 10 and the fixing portion 42, and improve the overall strength to a certain extent.

[0057] The number of the second fixing grooves is consistent with the number of the first fixing grooves 141 and the battery cell 21. The number of the second fixing grooves can be specifically defined according to the actual situation, and the present invention does not make specific limitations in this regard.

[0058] In some embodiments, the ventilation member 40 includes two ventilation portions 41 disposed opposite to each other. The fixing portion 42 is connected to the two ventilation portions 41 and is located between the two ventilation portions 41.

[0059] In this way, the fixing part 42 can be fixedly connected to the housing 10 through the ventilation part 41, and the two relatively arranged ventilation parts 41 can form a convection channel.

[0060] Specifically, in one embodiment, please refer to Figure 2 and Figure 3 , the two ventilation parts 41 of the ventilation member 40 are respectively located on the left and right sides of the energy storage power supply 100, and the two ventilation parts 41 are relatively arranged, so that the ventilation holes 411 on the two ventilation parts 41 are relatively arranged, and a convection channel can be formed, so that components such as the inverter 30 and the battery module 20 in the energy storage power supply 100 can exchange heat with the outside air through the two relatively arranged ventilation holes 411 respectively, so that the heat generated during operation can be dissipated to the outside through the convection channel.

[0061] The left and right sides of the fixing part 42 are respectively connected to the two ventilation parts 41, so that the fixing part 42 can be fixedly connected to the housing 10, and a plurality of battery cells 21 are fixed in the first fixing groove 141 arranged in the accommodation cavity 14, providing fixed support for the battery cells 21, and reducing the use of fixing brackets to a certain extent.

[0062] In some embodiments, the fixing part 42 is connected to the inner side wall of the accommodation cavity 14 through a fastener to fix a plurality of battery cells 21 in the first fixing groove 141.

[0063] In this way, the fixing part 42 can be fixedly connected to the housing 10 to fix a plurality of battery cells 21 in the first fixing groove 141, improving the installation reliability of the battery cells 21 to a certain extent.

[0064] Specifically, please refer to Figure 2 and Figure 3 , the battery module 20 is located between the fixing part 42 and the inner side wall of the accommodation cavity 14, so that the fixing part 42 can fix a plurality of battery cells 21 in the first fixing groove 141. The fixing part 42 and the inner side wall of the accommodation cavity 14 jointly provide fixed support for the battery cells 21, so that the battery cells 21 can be effectively fixed.

[0065] The fixing part 42 can be connected to the inner side wall of the accommodation cavity 14 through a fastener, thereby increasing the clamping force of the fixing part 42 and the inner side wall of the accommodation cavity 14 on the battery cells 21, so that a plurality of battery cells 21 are better fixed in the first fixing groove 141, and the installation reliability of the battery cells 21 is improved to a certain extent. The fasteners include but are not limited to screws, pins, rivets, etc., and the present invention does not make specific limitations on this.

[0066] In some embodiments, the inverter 30 is fixed on the fixing part 42, and the ventilation hole 411 is directly opposite to the inverter 30.

[0067] Specifically, please refer to Figure 2 andFigure 3 The inverter 30 is located above the fixing part 42 and fixedly connected to the fixing part 42. The inverter 30 is correspondingly arranged with the ventilation holes 411. When the energy storage power supply 100 is working, the external air flow can enter the accommodating cavity 14 from the ventilation holes 411 of one ventilation part 41 to cool the inverter 30, and the cooled air flow flows out from the ventilation holes 411 of the other ventilation part 41, dissipating the heat to the outside.

[0068] Optionally, the ventilation holes 411 include a first ventilation hole 411a and a second ventilation hole 411b. For the same ventilation part 41, the first ventilation hole 411a is located above the second ventilation hole 411b. The left and right sides of the fixing part 42 are respectively connected to the two ventilation parts 41. The ventilation parts 41 enclose at least part of the accommodating cavity 14, and the connection part formed by the connection between the fixing part 42 and the ventilation part 41 is located between the first ventilation hole 411a and the second ventilation hole 411b, so that the accommodating cavity 14 can be divided into two parts, and the two parts respectively accommodate the inverter 30 and the battery module 20.

[0069] In Figure 2 and Figure 3 's implementation manner, the inverter 30 is located above the fixing part 42 and correspondingly arranged with the first ventilation hole 411a; the battery module 20 and the battery management system 50 are located below the fixing part 42 and correspondingly arranged with the second ventilation hole 411b. The first ventilation hole 411a and the second ventilation hole 411b can respectively dissipate heat from the inverter 30 and the battery module 20, ensuring the heat dissipation effect of both to a certain extent. When the energy storage power supply 100 is working, the external air flow can enter the accommodating cavity 14 from the first ventilation hole 411a of one ventilation part 41 to form a first air flow layer to cool the inverter 30, and the cooled air flow flows out from the first ventilation hole 411a of the other ventilation part 41, and the external air flow can enter the accommodating cavity 14 from the second ventilation hole 411b of one ventilation part 41 to form a second air flow layer to cool the battery module 20, and the cooled air flow flows out from the second ventilation hole 411b of the other ventilation part 41. Since the fixing part 42 separates the first air flow layer and the second air flow layer, the first air flow layer and the second air flow layer do not interfere with each other, which is beneficial to improving the heat dissipation effect of the first air flow layer on the inverter 30 and the heat dissipation effect of the second air flow layer on the battery module 20. The number of the first ventilation holes 411a and the second ventilation holes 411b can be the same or different. The number of the first ventilation holes 411a and the second ventilation holes 411b can be specifically limited according to the actual situation, and the present invention does not make specific limitations on this.

[0070] Optionally, a first fan may be provided inside the energy storage power supply 100. The first fan may be disposed between the inverter 30 and the first ventilation hole 411a, and / or between the battery module 20 and the second ventilation hole 411b, so as to accelerate the air circulation between the inverter 30 and the battery module 20 and the outside, and further improve the heat dissipation efficiency. Optionally, a second fan may be provided inside the inverter 30. The air flow direction generated by the second fan is the same as the air flow direction generated by the first fan, and the second fan can accelerate the heat dissipation speed of the inverter 30.

[0071] In one embodiment, please refer to Figure 2 , the battery management system 50 is located between the battery module 20 and the second ventilation hole 411b, and one end of the battery management system 50 is connected to the bottom wall of the accommodation cavity 14, and there is a gap between the other end and the fixing portion 42, so that an air flow gap 15 is formed between the battery management system 50 and the fixing portion 42. The air flow gap 15 is communicated with the second ventilation hole 411b, so as to form an air flow channel. The battery module 20 can exchange heat with the outside air through the air flow gap 15 and the second ventilation hole 411b, so that the heat generated during operation can be smoothly dissipated, which is beneficial to improving the heat dissipation efficiency and meeting the heat dissipation requirements of the battery module 20 and the battery management system 50.

[0072] Optionally, please refer to Figures 1 to 3 , the energy storage power supply 100 may further include a panel 70 provided on the housing 10. The panel 70 encloses a part of the accommodation cavity 14 and is respectively connected to the two ventilation parts 41 on both sides. A display screen may be provided on the panel 70, and the display screen can display information such as the current power and temperature of the energy storage power supply 100. In the embodiment shown in the figure, an interface 71 and a button 72 are provided on the panel 70. The interface 71 is used to connect to an electrical device or a charging device. The button 72 is used to control the operation of the energy storage power supply 100 (such as power on / off, view information, etc.). The interface 71 includes but is not limited to an AC input interface, an AC output interface, a PV input interface, a DC input interface, a DC output interface, etc.

[0073] Optionally, the energy storage power supply 100 further includes a main board 60. In one embodiment, please refer to Figure 2 and Figure 3 , both the main board 60 and the battery module 20 are disposed below the fixing portion 42, and the main board 60 is located between the panel 70 and the battery module 20 and is electrically connected to the battery module 20, the inverter 30, the interface 71 and / or the button 72, so that the working states of the battery module 20 and the inverter 30 can be controlled through the interface 71 and / or the button 72 and the main board 60.

[0074] In the illustrated embodiment, the panel 70 is a front panel, the main board 60 is located on the front side of the battery module 20, the battery management system 50 is located between the right ventilation part 41 and the right side of the battery module 20, and the inverter 30 is located above the battery module 20. Thus, the inverter 30, the main board 60, and the battery management system 50 can be reasonably arranged around the battery module 20, effectively utilizing the internal space of the energy storage power supply 100 to achieve a structurally compact energy storage power supply 100.

[0075] In some embodiments, the housing 10 includes a first housing 11 and a second housing 12. The first housing 11 is detachably connected to the second housing 12 and together with the ventilation part 41 encloses an accommodation cavity 14.

[0076] This facilitates installation or repair.

[0077] Specifically, please refer to Figure 3 , the housing 10 includes a first housing 11 located below and a second housing 12 located above. The first housing 11 and the second housing 12 can be detachably connected to each other by means such as threads, buckles, or clamps. The first housing 11, the ventilation part 41, and the second housing 12 enclose to form an accommodation cavity 14 and can accommodate the battery cells 21. Thus, the convenience of assembly or disassembly and repair can be increased.

[0078] In some embodiments, the first housing 11 and the second housing 12 are connected to form a notch 13. The ventilation part 41 is received in the notch 13. A clamping groove is provided on the peripheral wall of the notch 13, and the outer edge of the ventilation part 41 is clamped in the clamping groove to fix the ventilation part 41 in the notch 13.

[0079] In this way, the ventilation member 40 can be fixedly connected to the housing 10.

[0080] Specifically, please refer to Figure 3 , the notch 13 may include a first notch 13a and a second notch 13b. The first notch 13a is provided on the first housing 11, and the second notch 13b is provided on the second housing 12. The first housing 11 and the second housing 12 are connected so that the first notch 13a and the second notch 13b are connected to form the notch 13. A part of the ventilation part 41 is received in the first notch 13a on the side wall of the first housing 11, and another part of the ventilation part 41 is received in the second notch 13b on the side wall of the second housing 12. A clamping groove is provided on the peripheral wall of the notch 13, and the outer edge of the ventilation part 41 is adapted to the clamping groove. Thus, the outer edge of the ventilation part 41 can be clamped in the clamping groove to fix the ventilation part 41 in the notch 13, and further fixedly connect the ventilation member 40 to the housing 10.

[0081] Optionally, the shapes of the first notch 13a and the second notch 13b are adapted to the shape of the ventilation part 41, so that the ventilation part 41 can be smoothly embedded in the notch 13 and closely fit with the side walls of the first housing 11 and the second housing 12.

[0082] In some embodiments, the energy storage power supply 100 further includes a first connection piece 81 and a second connection piece 82. The battery cell 21 includes a body 211, a first electrode 211a and a second electrode 211b. The first electrode 211a and the second electrode 211b are respectively disposed at two ends of the body 211 in the length direction. A first through hole (not shown in the figure) is provided in the bottom wall of the first fixing groove 141, and the first electrode 211a is opposite to the first through hole. A second through hole is provided in the bottom wall of the second fixing groove, and the second electrode 211b is opposite to the second through hole. The first connection piece 81 is fixed to the outer side wall of the housing 10 and electrically connects the first electrodes 211a of a plurality of battery cells 21, and the second connection piece 82 is fixed to the fixing portion 42 and electrically connects the second electrodes 211b of a plurality of battery cells 21.

[0083] In this way, the assembly process of the energy storage power supply 100 can be reduced to a certain extent, and the additional bracket for fixing the battery cell 21 can be saved.

[0084] Specifically, the energy storage power supply 100 includes a first connection piece 81 and a second connection piece 82. The first connection piece 81 and the second connection piece 82 play a role of connecting and conducting current in the energy storage power supply 100. The energy storage power supply 100 can increase the diversity of output current through the first connection piece 81 and the second connection piece 82. Please refer to Figure 4 , the length direction of the body 211 of the battery cell 21 is the up-and-down direction. The first electrode 211a and the second electrode 211b of the battery cell 21 are located at two ends of the body 211 in the up-and-down direction and are current ports for energy supply or charging. In one embodiment, when two adjacent battery cells 21 are connected in series, the first electrode 211a of one battery cell 21 is the positive electrode, the second electrode 211b is the negative electrode, the first electrode 211a of the other battery cell 21 is the negative electrode, and the second electrode 211b is the positive electrode. In one embodiment, when two adjacent battery cells 21 are connected in parallel, the first electrodes 211a of the two battery cells 21 are both negative electrodes or positive electrodes, and the second electrodes 211b are both positive electrodes or negative electrodes. One end of the body 211 provided with the first electrode 211a is received in the first fixing groove 141, and one end of the body provided with the second electrode 211b is received in the second fixing groove, so that the first fixing groove 141 and the second fixing groove can position and fix the battery cell 21.

[0085] Optionally, in Figure 2 and Figure 3In an embodiment, a plurality of first fixing grooves 141 are provided at the bottom of the accommodating cavity 14. One end of the body 211 can be accommodated in the first fixing groove 141 and the first electrode 211a penetrates through the first through hole, so as to fix the bottom end of the body 211; a plurality of second fixing grooves are provided on the lower side surface of the fixing part 42. The other end of the body 211 can be accommodated in the second fixing groove and the second electrode 211b penetrates through the second through hole, so as to fix the top end of the body 211. The first electrode 211a penetrating through the first through hole and the second electrode 211b penetrating through the second through hole can facilitate the electrical connection between the battery cell 21 and other electrical components (such as the inverter 30 and the battery management system 50) of the energy storage power supply 100, so as to charge and discharge the battery cell 21. Therefore, the battery cell 21 can be effectively fixed together without first assembling it into the battery module 20 and then installing it into the housing 10, so that the battery cell 21 is directly integrated into the housing 10, reducing the assembly process to a certain extent, and at the same time, the additional bracket for fixing the battery cell 21 can be saved, thereby improving the space utilization rate inside the energy storage power supply 100 to a certain extent.

[0086] Please combine Figure 3 , the first connecting piece 81 is fixedly connected to the outer side wall of the housing 10 (i.e., the outer side wall of the first housing 11), and the first electrode 211a is connected to the first connecting piece 81 through the first through hole; the second connecting piece 82 is fixedly connected to the side of the fixing part 42 facing away from the battery cell 21, and the second electrode 211b of the battery cell 21 is connected to the second connecting piece 82 through the second through hole. Optionally, in an embodiment, the first connecting piece 81 can connect the first electrodes 211a of some battery cells 21, and the second connecting piece 82 can connect the second electrodes 211b of this part of the battery cells 21, so that this part of the battery cells 21 outputs electrical energy or inputs electrical energy outward in a parallel form. The plurality of first connecting pieces 81 or the plurality of second connecting pieces 82 can output electrical energy or input electrical energy outward in a series or parallel form.

[0087] The first connecting piece 81 and the second connecting piece 82 can be made of copper, aluminum, nickel or alloy materials. The first connecting piece 81 and the second connecting piece 82 can be electrically connected to the first electrode 211a and the second electrode 211b respectively by means including but not limited to laser welding, stranding, and pressing.

[0088] In some embodiments, the energy storage power supply 100 further includes a cover plate 90. A receiving groove (not shown in the figure) is provided on the outer side wall of the housing 10. The first through hole penetrates through the bottom wall of the receiving groove. The first connecting piece 81 is located in the receiving groove, and the cover plate 90 is arranged on the outer side wall of the housing 10 and covers the receiving groove.

[0089] In this way, it is beneficial for the battery cell 21 to supply energy to the electrical equipment as a whole and reduce the overall volume of the energy storage power supply 100.

[0090] Specifically, in one embodiment, when the battery cell 21 is vertically placed in the accommodation cavity 14 and the first fixing groove 141 is provided at the bottom of the accommodation cavity 14, the receiving groove is provided at the bottom of the housing 10. The bottom wall of the housing 10 (i.e., the outer side wall of the first housing 11) is recessed inward to form the receiving groove. The first electrode 211a of the battery cell 21 passes through the first fixing groove 141 through the first through hole and then enters the receiving groove. The first connecting piece 81 can also connect the first electrode 211a in the receiving groove. Thus, the first electrode 211a and the first connecting piece 81 can be integrated at the bottom of the housing 10, thereby improving the overall integration degree to reduce the product volume. Please refer to Figure 3 , by providing the cover plate 90 to cover the receiving groove, the integrity of the housing 10 can be further improved and the first electrode 211a and the first connecting piece 81 can be protected.

[0091] Optionally, the cover plate 90 can be fixedly connected to the housing 10 by including but not limited to bolts, pins, colloids, etc., and the present invention does not make specific limitations on this.

[0092] In some embodiments, the energy storage power supply 100 further includes a plurality of third connecting pieces. The battery cell 21 includes a body 211, a first electrode 211a and a second electrode 211b. The first electrode 211a and the second electrode 211b are provided at one end of the body 211; The bottom wall of the second fixing groove is provided with a third through hole and a fourth through hole. The first electrode 211a is opposite to the third through hole, and the second electrode 211b is opposite to the fourth through hole. The third connecting piece is fixed to the fixing portion 42, and the third connecting piece electrically connects the first electrode 211a of the battery cell 21 and the second electrode 211b of the adjacent battery cell.

[0093] In this way, to a certain extent, the assembly process of the energy storage power supply 100 can be reduced and the extra bracket for fixing the battery cell 21 can be saved.

[0094] Specifically, in one embodiment, the first electrode 211a of a battery cell 21 is the positive electrode, and the second electrode 211b is the negative electrode. In one embodiment, the first electrode 211a of a battery cell 21 is the negative electrode, and the second electrode is the positive electrode. The first electrode 211a and the second electrode 211b are disposed at the same end of the body 211, and the other end of the body 211 is received in the first fixing groove 141. On the side of the fixing portion 42 facing the battery module 20, a plurality of second fixing grooves are provided. On the bottom wall of the second fixing groove, a third through hole and a fourth through hole are provided. The third through hole and the fourth through hole are respectively aligned with the first electrode 211a and the second electrode 211b. One end of the first electrode 211a and the second electrode 211b provided on the body 211 can be received in the second fixing groove, and the first electrode 211a passes through the third through hole, and the second electrode 211b passes through the fourth through hole, so as to fix the top end of the body 211. The first electrode 211a passing through the third through hole and the second electrode 211b passing through the fourth through hole facilitate the electrical connection of the battery cell 21 with other electrical components (such as the inverter 30 and the battery management system 50) of the energy storage power supply 100, so that the battery cell 21 can be charged and discharged. Therefore, the battery cell 21 can be effectively fixed together without first assembling into the battery module 20 and then installing it into the housing 10, so that the battery cell 21 is directly integrated into the housing 10, reducing the assembly process to a certain extent, and at the same time saving the additional bracket for fixing the battery cell 21, thereby improving the space utilization rate inside the energy storage power supply 100 to a certain extent.

[0095] The third connecting piece can connect the first electrode 211a of one battery cell 21 and the second electrode 211b of the adjacent battery cell 21, that is, the third connecting piece is fixedly connected to the side of the fixing portion 42 facing away from the battery cell 21. The first electrode 211a of one battery cell 21 is connected to the third connecting piece through the third through hole, and the second electrode 211b of the adjacent battery cell 21 is connected to the third connecting piece through the fourth through hole. Therefore, the battery cells 21 are connected in series to output electrical energy outward or input electrical energy inward.

[0096] The third connecting piece can be made of copper, aluminum, nickel or alloy material. The third connecting piece can be electrically connected to the first electrode 211a and the second electrode 211b respectively by means including but not limited to laser welding, stranding, and pressing.

[0097] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0098] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above-described embodiments within the scope of the present invention.

Claims

1. An energy storage power supply, characterized in that: include: A housing, wherein a housing cavity is provided in the housing, and a plurality of first fixing grooves are provided on an inner side wall of the housing cavity; A battery module, the battery module is located in the accommodating cavity, the battery module includes a plurality of battery cells, and one end of the battery cell is accommodated in the first fixing groove; An inverter, the inverter is disposed in the accommodating cavity, the inverter is electrically connected to the battery module, and; A ventilation member, wherein the ventilation member is fixedly connected to the shell, the ventilation member comprises an integrally formed ventilation portion and a fixing portion, the ventilation portion constitutes a part of the shell and is provided with a ventilation hole connected to the accommodating cavity, the fixing portion is located in the accommodating cavity, and the fixing portion fixes one end of the plurality of battery cells to the first fixing groove.

2. The energy storage power supply according to claim 1, characterized in that: The fixing portion is provided with a plurality of second fixing grooves, and the other end of the battery core is accommodated in the second fixing groove.

3. The energy storage power supply according to claim 1, characterized in that: The ventilation member includes two ventilation parts that are arranged opposite to each other, and the fixing part is connected to the two ventilation parts and is located between the two ventilation parts.

4. The energy storage power supply according to claim 1, characterized in that: The fixing portion is connected to the inner wall of the accommodating cavity through a fastener to fix the plurality of battery cells to the first fixing groove.

5. The energy storage power supply according to claim 1, characterized in that: The inverter is fixed on the fixing part, and the ventilation hole faces the inverter.

6. The energy storage power supply according to claim 1, characterized in that: The housing includes a first shell and a second shell, wherein the first shell is detachably connected to the second shell and together with the ventilation portion, forms the accommodating cavity.

7. The energy storage power supply according to claim 6, characterized in that: A notch is formed after the first shell and the second shell are connected, and the ventilation part is accommodated in the notch. A peripheral wall of the notch is provided with a slot, and the outer edge of the ventilation part is clamped in the slot to fix the ventilation part in the notch.

8. The energy storage power supply according to claim 6, characterized in that: The inner side wall of the first shell is provided with a plurality of the first fixing grooves, the fixing portion is connected to the first shell via a fastener to fix the plurality of battery cells to the first fixing grooves, and the inverter is fixed to the fixing portion or the second shell.

9. The energy storage power supply according to claim 2, characterized in that: The energy storage power supply further includes a plurality of first connecting plates and a plurality of second connecting plates, the battery core includes a body, a first electrode and a second electrode, and the first electrode and the second electrode are respectively arranged at two ends of the body in the length direction; A first through hole is provided on the bottom wall of the first fixing groove, and the first electrode faces the first through hole; A second through hole is provided on the bottom wall of the second fixing groove, and the second electrode faces the second through hole; The first connecting piece is fixed to the outer wall of the shell and electrically connected to the first electrodes of the plurality of battery cells, and the second connecting piece is fixed to the fixing portion and electrically connected to the second electrodes of the plurality of battery cells.

10. The energy storage power supply according to claim 9, characterized in that: The energy storage power supply also includes a cover plate, a receiving groove is arranged on the outer wall of the shell, the first through hole passes through the bottom wall of the receiving groove, the first connecting piece is located in the receiving groove, and the cover plate is arranged on the outer wall of the shell and covers the receiving groove.

11. The energy storage power supply according to claim 2, characterized in that: The energy storage power supply further includes a plurality of third connecting sheets, the battery core includes a body, a first electrode and a second electrode, and the first electrode and the second electrode are arranged at one end of the body; The bottom wall of the second fixing groove is provided with a third through hole and a fourth through hole, the first electrode is opposite to the third through hole, the second electrode is opposite to the fourth through hole, the third connecting piece is fixed to the fixing part, and the third connecting piece electrically connects the first electrode of the battery cell and the second electrode of the adjacent battery cell.

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