energy storage device

Abstract

The utility model provides a kind of energy storage device, the energy storage device includes device box, battery pack, connector, force bearing connecting plate and connecting piece, wherein, device box includes device base and device face cover, device base is equipped with connecting side wall;Battery pack is assembled in device base, and clearance is formed between it and connecting side wall, device face cover is connected at the installation opening of device base;Connector includes connector main body and connecting table;Force bearing connecting plate is located at the inboard of connecting side wall, connecting table is located at the outboard of connecting side wall, connector main body is in turn through connecting side wall and force bearing connecting plate;Connecting piece is through connecting side wall, connects force bearing connecting plate and connecting table.The energy storage device provided by the utility model can reduce the stress on the device box, prevent the stress cracking at the dense opening of the box side wall, make the assembly and disassembly of the connector integrated, simplify the operation of fixing the connector, and make the assembly of the energy storage device more convenient.

Description

Technical Field

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

[0002] Energy storage devices are technological equipment that converts energy to store and release electrical energy, and are applied in various power sectors of modern society. Existing energy storage devices consist of plastic enclosures with assembled battery packs. Currently, connectors are directly fixed to the side walls of the plastic enclosure using matching screws and nuts. Because the plastic enclosure is made of ordinary plastic and has very dense openings, the side walls of the plastic enclosure are under stress concentration after the screws and nuts are tightened, leading to cracks and damage to the side walls. Furthermore, the internal space of the plastic enclosure with assembled battery packs is very small, and the fixing holes of the connectors are very close to the connectors, making it very difficult to directly tighten the nuts. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an energy storage device that can reduce the stress on the device housing, prevent the side wall of the housing from cracking due to stress, make the force on the connector assembly and disassembly as a whole, and simplify the operation of fixing the connector, making the assembly of the device easier.

[0004] This utility model provides an energy storage device, comprising: a device housing including a device base and a device cover, the device base having a connecting sidewall; a battery pack assembled in the device base and forming a gap with the connecting sidewall, the device cover being connected to the mounting opening of the device base; a connector including a connector body and a connecting platform; a load-bearing connecting plate located inside the connecting sidewall, the connecting platform located outside the connecting sidewall, the connector body sequentially penetrating the connecting sidewall and the load-bearing connecting plate; and a connecting member penetrating the connecting sidewall and connecting the load-bearing connecting plate and the connecting platform.

[0005] In a preferred embodiment of this utility model, the energy storage device includes 2N connecting members, and the load-bearing connecting plate includes N load-bearing connecting units. Each load-bearing connecting unit has a first connecting protrusion and a second connecting protrusion. The first connecting protrusion has a first connecting hole, and the second connecting protrusion has a second connecting hole. One connecting member is connected to the first connecting hole, and another connecting member is connected to the second connecting hole. Wherein, N is greater than 0 and is a natural number.

[0006] In a preferred embodiment of this invention, N=3.

[0007] In a preferred embodiment of this utility model, the first connecting hole is configured as a threaded hole, and the connecting member is screwed into the first connecting hole.

[0008] In a preferred embodiment of this utility model, each load-bearing connection unit is provided with a receiving hole, and the first connecting protrusion and the second connecting protrusion are provided on both sides of the receiving hole.

[0009] In a preferred embodiment of this utility model, the load-bearing connecting plate is provided with an operating bending portion at one edge, and the protruding direction of the operating bending portion is the same as the protruding direction of the first connecting protrusion.

[0010] In a preferred embodiment of this utility model, the load-bearing connecting plate is provided with a reinforcing bending portion at another edge, and the protruding direction of the reinforcing bending portion is the same as the protruding direction of the operating bending portion.

[0011] In a preferred embodiment of this invention, the operating bending portion has a greater degree of protrusion than the first connecting protrusion.

[0012] In a preferred embodiment of this utility model, the reinforcing bending portion has the same degree of protrusion as the operating bending portion, or the reinforcing bending portion has a smaller degree of protrusion compared to the operating bending portion.

[0013] In a preferred embodiment of this utility model, the device cover is connected to the mounting opening via a convex-concave fit.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Using the energy storage device provided by this utility model, the load-bearing connecting plate is first placed inside the connecting side wall of the device housing, and then the connector body is sequentially inserted through the connecting side wall and the load-bearing connecting plate for pre-positioning. At this time, the connecting platform is placed outside the connecting side wall. Then, the load-bearing connecting plate and the connecting platform are connected by a connector to fix the connector on the connecting side wall. As shown above, the load-bearing connecting plate replaces the original multiple nuts used to fix the connector on the inside of the connecting side wall, simplifying the operation of fixing the connector and making the assembly of the device easier. Moreover, the disassembly and installation of the connector on the connecting side wall of the device housing changes from the force on the nuts to the force on the load-bearing connecting plate, and the force-bearing area also increases from the smaller area of ​​the nuts to the larger area of ​​the load-bearing connecting plate, which can reduce the force on the device housing, prevent the connecting side wall from cracking under stress, and ensure the normal use of the energy storage device.

[0015] Other features and advantages of the present invention will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the technical solution of the present invention. The objects and other advantages of the present invention may be realized and obtained by means of the structures and / or processes particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0016] Figure 1A schematic diagram of the energy storage device provided in the embodiment of this utility model;

[0017] Figure 2 This is an exploded view of the energy storage device provided in an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the structure of the device base of the device housing provided in the embodiment of this utility model;

[0019] Figure 4 This is a structural schematic diagram of the load-bearing connecting plate provided in an embodiment of the present utility model;

[0020] Figure 5 This is a structural schematic diagram of the load-bearing connecting plate provided in an embodiment of the present utility model from another perspective.

[0021] Explanation of icon numbers: 100 - Energy storage device; 10-Device housing, 11-Device base, 11a-Mounting opening, 111-Connecting side wall, 1111-Third connecting hole, 1112-Fourth connecting hole, 1113-Second receiving hole, 12-Device cover; 20-Battery Pack; 30-Connector, 31-Connector body, 32-Connecting platform, 321-Fifth connecting hole, 322-Sixth connecting hole; 40-Bearing connecting plate, 40a-Bearing connecting unit, 41-First connecting protrusion, 411-First connecting hole, 42-Second connecting protrusion, 421-Second connecting hole, 43-First receiving hole, 44-Operating bending part, 45-Reinforcing bending part; 50 - Connector; 60 - Corner protectors for the enclosure; 70 - Connecting screw; Detailed Implementation

[0022] The following detailed description of the embodiments of this utility model, in conjunction with the accompanying drawings, will provide a thorough understanding of how this utility model uses technical means to solve technical problems and achieve technical effects, enabling its implementation. It should be noted that these specific descriptions are merely intended to facilitate a clearer understanding of this utility model by those skilled in the art, and are not intended to limit its scope. For example, the use of "first" and "second" in the embodiments of this utility model is not intended to limit its application, but merely to indicate the serial numbers of multiple identical or similar devices or mechanisms. Those skilled in the art can readjust these serial numbers for ease of description or during the organization of technical solutions. Furthermore, alternative solutions are described for some mechanisms in different embodiments, and these alternatives can be applied to other identical or similar devices or mechanisms. As long as there is no conflict, the various embodiments and features in each embodiment of this utility model can be combined with each other, and the resulting technical solutions are all within the protection scope of this utility model.

[0023] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 5 As shown, this embodiment provides an energy storage device 100, which can store electrical energy and release it to an external circuit. Specifically, it includes a device housing 10, a battery pack 20, a connector 30, a load-bearing connecting plate 40, and a connector 50.

[0025] The device housing 10 includes a device base 11 and a device cover 12. Corner protectors 60 are provided at the four corners of the device base 11 and the device cover 12 to protect the corners. The device base 11 is provided with a connecting sidewall 111 for connecting the connector 30. The device cover 12 is connected to the mounting opening 11a of the device base 11. Preferably, the device cover 12 and the mounting opening 11a are connected with a concave-convex fit, and a connecting screw 70 is added to further connect the device cover 12 and the mounting opening 11a, so as to securely connect the device cover 12 to the device base 11.

[0026] The battery pack 20 is assembled in the device base 11, and a gap is formed between it and the connecting side wall 111. The device cover 12 is then connected to the device base 11 to form the device housing 10.

[0027] Connector 30 includes connector body 31 and connector platform 32.

[0028] The load-bearing connecting plate 40 is located inside the connecting side wall 111, the connecting platform 32 is located outside the connecting side wall 111, and the connector body 31 passes through the connecting side wall 111 and the load-bearing connecting plate 40 in sequence.

[0029] The connector 50 passes through the connecting sidewall 111 and connects the load-bearing connecting plate 40 and the connecting platform 32.

[0030] Using the aforementioned energy storage device 100, the load-bearing connecting plate 40 is first placed inside the connecting side wall 111 of the device housing 10. Then, the connector body 31 is pre-positioned by passing through the connecting side wall 111 and the load-bearing connecting plate 40 in sequence. At this time, the connecting platform 32 is placed outside the connecting side wall 111. Then, the connecting piece 50 is used to connect the load-bearing connecting plate 40 and the connecting platform 32 to fix the connector 30 on the connecting side wall 111. As described above, the load-bearing connecting plate 40 replaces the original multiple nuts in the connection. The inner side of the connecting side wall 111 is fixed with a connector 30, which simplifies the operation of fixing the connector 30 and makes the assembly of the energy storage device 100 easier. Moreover, the disassembly and installation of the connector 30 on the connecting side wall 111 of the device housing 10 is changed from the force on the nut to the force on the load-bearing connecting plate 40. The force-bearing area is also increased from the smaller area of ​​the nut to the larger area of ​​the load-bearing connecting plate 40, which can reduce the force on the device housing 11, prevent the connecting side wall 111 from cracking under stress, and ensure the normal use of the energy storage device 100.

[0031] In this embodiment, the energy storage device 100 includes 2N connectors 50, and the load-bearing connecting plate 40 includes N load-bearing connecting units 40a. In this embodiment, N=3, and the load-bearing connecting plate 40 includes three load-bearing connecting units 40a. Therefore, the energy storage device 100 includes six connectors 50. Specifically, each load-bearing connecting unit 40a has a first connecting protrusion 41 and a second connecting protrusion 42. The first connecting protrusion 41 has a first connecting hole 411, and the second connecting protrusion 42 has a second connecting hole 421. Correspondingly, the connecting sidewall 111 of the device base 11 is provided with... The connector 30 has a third connecting hole 1111 and a fourth connecting hole 1112. The connector 30's connecting platform 32 has a fifth connecting hole 321 and a sixth connecting hole 322. One connector 50 passes through the third connecting hole 1111 to connect the fifth connecting hole 321 to the first connecting hole 411. Another connector 50 passes through the fourth connecting hole 1112 to connect the sixth connecting hole 322 to the second connecting hole 421. N is greater than 0 and is a natural number. As shown above, by setting the corresponding connecting holes and using the connector 50, the connector 30 can be quickly and stably installed and removed from the connecting side wall 111.

[0032] Furthermore, each load-bearing connection unit 40a is provided with a first receiving hole 43, and correspondingly, the connecting side wall 111 of the device base 11 is provided with a second receiving hole 1113. The first connecting protrusion 41 and the second connecting protrusion 42 are respectively located on both sides of the first receiving hole 43 with the short axis center line as the boundary, forming two connection positions at the top and bottom. After the connector body 31 of the connector 30 passes through the second receiving hole 1113 and the first receiving hole 43 in sequence, the connector 30 is fixed to the connecting side wall 111 by the connector 50 through the two connection positions at the top and bottom of the receiving hole, so as to ensure the connection of the connector 30 is stable and prevent the connection of the connector 30 from being misaligned.

[0033] Preferably, the first connecting hole 411 and the second connecting hole 421 are threaded holes, and the connector 50 is a threaded component, generally a screw. The connector 50 is screwed into the first connecting hole 411 and the second connecting hole 421. By screwing the connector 50 into and out of the first connecting hole 411 and the second connecting hole 421, the connector 30 can be quickly disassembled and connected on the connecting side wall 111.

[0034] In this embodiment, preferably, the load-bearing connecting plate 40 is provided with an operating bending part 44 at one edge, and the protrusion direction of the operating bending part 44 is the same as the protrusion direction of the first connecting protrusion 41. A gap is formed between the battery pack 20 assembled in the device base 11 and the connecting side wall 111. By clamping the operating bending part 44, the operator can easily place the load-bearing connecting plate 40 through the gap to the inside of the connecting side wall 111. The operation is labor-saving and convenient. Moreover, since the protrusion direction of the operating bending part 44 is the same as the protrusion direction of the first connecting protrusion 41, the area of ​​the load-bearing connecting plate 40 in contact with the inside of the connecting side wall 111 is maximized, resulting in high structural strength.

[0035] More preferably, the load-bearing connecting plate 40 is provided with a reinforcing bending portion 45 at another edge, and the protruding direction of the reinforcing bending portion 45 is the same as the protruding direction of the operating bending portion 44; the reinforcing bending portion 45 is provided to enhance the structural strength of the load-bearing connecting plate 40 itself and ensure the load-bearing effect of the load-bearing connecting plate 40.

[0036] Furthermore, compared to the first connecting protrusion 41, the operating bending portion 44 has a greater degree of protrusion, providing the operator with sufficient clamping area and improving assembly efficiency.

[0037] Furthermore, the reinforcing bend 45 can have the same degree of protrusion as the operating bend 44, forming a generally symmetrical structure of the load-bearing connecting plate 40. Alternatively, the reinforcing bend 45 can have a smaller degree of protrusion than the operating bend 44, as long as the operating bend 44 provides sufficient clamping area for the operator and the reinforcing bend 45 can enhance the structural strength of the load-bearing connecting plate 40 itself. No specific restrictions are imposed.

[0038] Finally, it should be noted that the above description is merely the preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible changes and simple substitutions to the technical solution of this utility model using the disclosed methods and technical content without departing from the scope of the technical solution of this utility model, and these all fall within the protection scope of the technical solution of this utility model.

Claims

1. An energy storage device, characterized in that, include: The device housing includes a device base and a device cover, wherein the device base is provided with a connecting sidewall; The battery pack is assembled in the device base and forms a gap with the connecting sidewall; the device cover is connected to the mounting opening of the device base. Connector, including connector body and connector base; A load-bearing connecting plate is located inside the connecting sidewall, the connecting platform is located outside the connecting sidewall, and the connector body sequentially penetrates the connecting sidewall and the load-bearing connecting plate; and, A connector extends through the connecting sidewall and connects the load-bearing connecting plate and the connecting platform.

2. The energy storage device according to claim 1, characterized in that, The energy storage device includes 2N connectors, and the load-bearing connecting plate includes N load-bearing connecting units. Each load-bearing connecting unit has a first connecting protrusion and a second connecting protrusion. The first connecting protrusion has a first connecting hole, and the second connecting protrusion has a second connecting hole. One connector is connected to the first connecting hole, and another connector is connected to the second connecting hole. N is greater than 0 and is a natural number.

3. The energy storage device according to claim 2, characterized in that, N=3。 4. The energy storage device according to claim 2, characterized in that, The first connecting hole is a threaded hole, and the connector is screwed into the first connecting hole.

5. The energy storage device according to claim 2, characterized in that, Each load-bearing connection unit is provided with a receiving hole, and the first connecting protrusion and the second connecting protrusion are provided on both sides of the receiving hole.

6. The energy storage device according to claim 5, characterized in that, The load-bearing connecting plate has an operating bending part at one edge, and the protrusion direction of the operating bending part is the same as the protrusion direction of the first connecting protrusion.

7. The energy storage device according to claim 6, characterized in that, The load-bearing connecting plate has a reinforcing bend at another edge, and the direction of the protrusion of the reinforcing bend is the same as the direction of the protrusion of the operating bend.

8. The energy storage device according to claim 7, characterized in that, Compared to the first connecting protrusion, the operating bending portion has a greater degree of protrusion.

9. The energy storage device according to claim 8, characterized in that, The reinforcing bend has the same degree of protrusion as the operating bend, or the reinforcing bend has a smaller degree of protrusion compared to the operating bend.

10. The energy storage device according to any one of claims 1-9, characterized in that, The device cover is connected to the mounting opening via a convex-concave fit.

Images