Battery box cover, battery box and energy storage device

Abstract

The utility model belongs to the field of secondary batteries, and in particular, relates to a battery box cover, a battery box and an energy storage device. In order to solve the technical problem that in the prior art, when a BMS module maintenance window is set on the side wall of the box cover, the connector needs to be set on the side wall of the box cover, which makes it impossible to assemble the battery box. The utility model provides a battery box cover, a connector installation window is provided on the box cover, a connector cover is fixed at the connector installation window, a mounting structure for installing the connector is provided on the connector cover, and the connector cover has a connecting edge located on the inner side of the box cover, and the connecting edge is fixedly connected to the box cover by screws, and the head of the screw is located on the outer side of the box cover. The utility model also provides a battery box including the above-mentioned box cover and an energy storage device including the above-mentioned battery box. The connector connected to the busbar is installed on the connector cover, and the connector cover is installed on the box cover from the inside of the box cover to complete the assembly of the battery box.

Description

Technical Field

[0001] The utility model belongs to the field of secondary batteries, and in particular relates to a box cover of a battery box, a battery box and an energy storage device. Background Art

[0002] A battery box is disclosed in a Chinese utility model patent with authorization announcement number CN209183857U and authorization announcement date 2019.07.30. Figure 1 The following contents are specifically disclosed in the specific implementation mode of the specification: Figure 1 As shown, the battery box includes a box cover 4 and a lower box body 3. The lower box body is provided with a positive connector 1 connected to the incoming busbar by screws and a negative connector 2 connected to the outgoing busbar by screws. The positive connector 1 and the negative connector 2 are collectively referred to as connectors, and the incoming busbar and the outgoing busbar are collectively referred to as busbars. When removing the connector, it is necessary to open the box cover 4 first, then remove the screws connecting the connector and the busbar, and finally remove the connector; correspondingly, when installing the connector, it is necessary to open the box cover 4 first, then connect the connector and the busbar by screws, and finally cover the box cover 4.

[0003] In a battery box, the BMS (battery management system) module is a component that is difficult to repair. In an energy storage device, when a BMS module of a battery box fails, the battery box is usually removed from the container and the cover of the battery box is removed to repair the BMS module, which is very troublesome.

[0004] To solve the above problems, it is necessary to Figure 1 A BMS module inspection window is provided on the side wall of the box cover 4 shown in the figure, and a corresponding BMS module cover is arranged at the BMS module inspection window. During maintenance, the BMS module cover is removed, and the BMS module can be directly repaired through the BMS module inspection window. However, the following difficulties are encountered when setting the BMS module inspection window and the BMS module cover:

[0005] Since it is necessary to set a BMS module inspection window on the side wall of the box cover 4, the box cover 4 needs to be raised, which results in no position for setting the connector on the lower box body 3. The connector needs to be set on the side wall of the box cover 4. When installing the connector, if the connector is connected to the busbar first, the connector cannot be installed on the box cover 4; if the connector is connected to the box cover 4 first, the connector cannot be fixed to the busbar by screws. Therefore, when the BMS module inspection window is set on the side wall of the box cover 4, there is a problem that the battery box cannot be assembled. Utility Model Content

[0006] The purpose of the utility model is to provide a battery box cover to solve the technical problem that when a BMS module inspection window is set on the side wall of the box cover in the prior art, if the connector is connected to the busbar first, the connector cannot be installed on the box cover; if the connector is connected to the box cover first, the connector and the busbar cannot be fixedly connected by screws, resulting in the inability to assemble the battery box. The purpose of the utility model is also to provide a battery box to solve the same technical problems mentioned above.

[0007] The utility model also aims to provide an energy storage device to solve the same technical problem as above.

[0008] In order to achieve the above-mentioned purpose, the technical solution of the battery box cover provided by the utility model is:

[0009] A battery box cover is provided with a connector installation window on the cover, a connector cover is fixed at the connector installation window, a mounting structure for mounting the connector is provided on the connector cover, the connector cover has a connecting edge located on the inner side of the cover, the connecting edge is fixedly connected to the cover by screws, and the heads of the screws are located on the outer side of the cover.

[0010] Furthermore, the connector cover plate also has a protruding portion protruding outward from the box cover, the mounting structure is arranged on the protruding portion, and the inner side of the protruding portion has a concave cavity for communicating with the internal space of the box cover.

[0011] Furthermore, the connector cover is provided with the connecting edges on all four sides.

[0012] Furthermore, a sealing ring is provided between the connecting edge and the box cover.

[0013] Furthermore, the box cover includes a top plate and side plates connected around the top plate, and the connector installation window is arranged on the side plates.

[0014] Furthermore, a mounting portion for mounting the communication connector is also provided on the connector cover.

[0015] Furthermore, a BMS module maintenance window is provided on the box cover, to which a BMS module cover is fixedly connected. The BMS module cover has a connecting portion located on the outside of the box cover, and the connecting portion is fixedly connected to the box cover by a screw whose head is located on the outside of the box cover.

[0016] Furthermore, the connector cover is a square cover.

[0017] The beneficial effects of the battery box cover of the utility model are as follows: the utility model is a pioneering invention. A connector installation window is set on the box cover, and the connecting edge of the connector cover is connected to the inner side of the box cover by screws, and the head of the screw is located on the outer side of the box cover, so that the connector cover can be removed from the outer side of the box cover and pushed inward. After the box cover of the battery box is applied to the battery box, first, the corresponding connector can be installed through the installation structure; then, the connector installed on the connector cover is connected to the busbar by screws; then, the connector cover is installed at the connector installation window from the inner side of the box cover; finally, the box cover is installed on the lower box body to complete the assembly of the battery box. When removing the box cover, the head of the screw is directly screwed from the outer side of the box cover to remove the connector cover from the box cover; then, the connector cover and the corresponding connector on the connector cover are pushed into the battery box; finally, the box cover of the battery box is directly removed, so that the box cover can be directly opened without removing the connector on the connector cover, which is convenient for maintenance.

[0018] In order to achieve the above-mentioned purpose, the technical solution of the battery box provided by the utility model is:

[0019] A battery box comprises a box cover and a lower box body, wherein the box cover is provided with a connector installation window, a connector cover is fixed at the connector installation window, a connector is installed on the connector cover, the connector cover has a connecting edge located on the inner side of the box cover, the connecting edge is fixedly connected to the box cover by screws, and the heads of the screws are located on the outer side of the box cover.

[0020] Furthermore, the connector cover plate also has a protrusion protruding outward from the box cover, the positive connector and / or the negative connector is arranged on the protrusion, and the inner side of the protrusion has a cavity for communicating with the internal space of the box cover.

[0021] Furthermore, the connector cover is provided with the connecting edges on all four sides.

[0022] Furthermore, a sealing ring is provided between the connecting edge and the box cover.

[0023] Furthermore, the box cover includes a top plate and side plates connected around the top plate, and the connector installation window is arranged on the side plates.

[0024] Furthermore, a communication connector is also installed on the connector cover.

[0025] Furthermore, a BMS module maintenance window is provided on the box cover, to which a BMS module cover is fixedly connected. The BMS module cover has a connecting portion located on the outside of the box cover, and the connecting portion is fixedly connected to the box cover by a screw whose head is located on the outside of the box cover.

[0026] Furthermore, the connector cover is a square cover.

[0027] The beneficial effects of the battery box of the utility model are as follows: the utility model is an improved invention. A connector installation window is set on the box cover. When assembling the battery box, first, the corresponding connector can be installed through the installation structure; then, the connector installed on the connector cover is connected to the busbar by screws; then, the connector cover is installed at the connector installation window from the inside of the box cover; finally, the box cover is installed on the lower box body to complete the assembly of the battery box. When removing the box cover, since the connecting edge of the connector cover is connected to the inside of the box cover by screws, and the head of the screw is located on the outside of the box cover, the connector cover can be removed from the outside of the box cover, and the connector cover can be pushed inward into the battery box, and then the box cover of the battery box can be directly removed, so that the box cover can be directly opened without removing the connector on the connector cover, which is convenient for maintenance.

[0028] In order to achieve the above-mentioned purpose, the technical solution of the energy storage device provided by the utility model is:

[0029] An energy storage device comprises a shell and a battery box installed in the shell, the battery box comprises a box cover and a lower box body, the box cover is provided with a connector installation window, a connector cover is fixed at the connector installation window, a connector is installed on the connector cover, the connector cover has a connecting edge located on the inner side of the box cover, the connecting edge is fixedly connected to the box cover by screws, and the heads of the screws are located on the outer side of the box cover.

[0030] Furthermore, the connector cover plate also has a protrusion protruding outward from the box cover, the positive connector and / or the negative connector is arranged on the protrusion, and the inner side of the protrusion has a cavity for communicating with the internal space of the box cover.

[0031] Furthermore, the connector cover is provided with the connecting edges on all four sides.

[0032] Furthermore, a sealing ring is provided between the connecting edge and the box cover.

[0033] Furthermore, the box cover includes a top plate and side plates connected around the top plate, and the connector installation window is arranged on the side plates.

[0034] Furthermore, a communication connector is also installed on the connector cover.

[0035] Furthermore, a BMS module maintenance window is provided on the box cover, to which a BMS module cover is fixedly connected. The BMS module cover has a connecting portion located on the outside of the box cover, and the connecting portion is fixedly connected to the box cover by a screw whose head is located on the outside of the box cover.

[0036] Furthermore, the connector cover is a square cover.

[0037] The beneficial effects of the energy storage device of the utility model are as follows: the utility model is an improved invention. The battery box can be conveniently installed through the shell; a connector installation window is set on the box cover. When assembling the battery box, first, the corresponding connector can be installed through the installation structure; then, the connector installed on the connector cover is connected to the busbar by screws; then, the connector cover is installed at the connector installation window from the inside of the box cover; finally, the box cover is installed on the lower box body to complete the assembly of the battery box. When removing the box cover, since the connecting edge of the connector cover is connected to the inside of the box cover by screws, and the head of the screw is located on the outside of the box cover, the connector cover can be removed from the outside of the box cover, and the connector cover can be pushed inward into the battery box, and then the box cover of the battery box can be directly removed, so that the box cover can be directly opened without removing the connector on the connector cover, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of a battery box in the prior art.

[0039] Figure 1 Description of reference numerals in the figures:

[0040] 1. Positive connector; 2. Negative connector; 3. Lower box; 4. Box cover.

[0041] Figure 2 This is a schematic diagram of the structure of the battery box of the utility model;

[0042] Figure 3 for Figure 2 Exploded diagram of the structure;

[0043] Figure 4 for Figure 2 Schematic diagram of the structure of the BMS module.

[0044] Figures 2 to 4 Description of reference numerals in the figures:

[0045] 1. Box cover; 11. Connector installation window; 12. BMS module maintenance window; 2. Lower box; 3. Connector cover; 31. Connection edge; 4. BMS module cover; 5. Screws; 6. BMS module. DETAILED DESCRIPTION

[0046] In order to solve the problems raised in the background technology, the main inventive concept of the utility model is: by setting a connector installation window and a connector cover plate on the box cover, and making the connection edge of the connector cover plate located on the inner side of the box cover, and the head of the screw that fixes the connection edge and the box cover is located on the outer side of the box cover, when assembling the battery box, the connector connected to the busbar can be installed on the connector cover plate, and the connector cover plate can be installed on the box cover from the inner side of the box cover to complete the assembly of the battery box. When disassembling the box cover, the screws can be screwed from the outer side of the box cover to remove the connector cover plate, and the connector cover plate can be pushed inward into the battery box, so that the box cover can be directly opened without removing the connector on the connector cover plate, which is convenient for maintenance.

[0047] The present invention is further described in detail below in conjunction with the embodiments.

[0048] The specific embodiment of the battery box provided by the utility model:

[0049] like Figures 2-3 As shown, the battery box includes a box cover 1 and a lower box body 2, the box cover 1 is detachably connected to the lower box body 2, the box cover 1 is provided with a connector installation window 11, a connector cover plate 3 is fixed to the connector installation window 11, the connector cover plate 3 is provided with a mounting structure for mounting a positive connector and a negative connector, the positive connector and the negative connector are mounted on the connector cover plate 3 through the mounting structure, the connector cover plate 3 has a connecting edge 31 located on the inner side of the box cover 1, the connecting edge 31 is fixedly connected to the box cover 1 through a screw 5, and the head of the screw 5 is located on the outer side of the box cover 1. Specifically, the connector cover plate 3 is a square cover plate, but in other specific embodiments, the connector cover plate 3 can also be a cover plate in a circular, trapezoidal or rectangular shape.

[0050] A connector installation window 11 is provided on the box cover 1. When assembling the battery box, first, the corresponding connector can be installed through the installation structure; then, the connector installed on the connector cover 3 is connected to the busbar by screws; then, the connector cover 3 is installed at the connector installation window 11 from the inside of the box cover 1; finally, the box cover 1 is installed on the lower box body 2 to complete the assembly of the battery box. When removing the box cover 1, since the connecting edge 31 of the connector cover 3 is connected to the inside of the box cover 1 by screws 5, and the head of the screw 5 is located on the outside of the box cover 1, the connector cover 3 can be removed from the outside of the box cover 1, and the connector cover 3 can be pushed inward into the battery box, and then the box cover 1 of the battery box can be directly removed, so that the box cover 1 can be directly opened without removing the positive connector and the negative connector on the connector cover 3, which is convenient for maintenance.

[0051] Of course, in other specific embodiments, the number of connector covers 3 can also be two, and each connector cover 3 is respectively provided with a mounting structure for installing a positive connector and a mounting structure for installing a negative connector. In this case, the positive connector and the negative connector are respectively arranged on different connector covers 3, and the box cover 1 can only be removed after both connector covers 3 are pushed into the battery box.

[0052] like Figures 2-3 As shown, since the connector needs to be connected to a copper busbar, in order to facilitate the arrangement of the copper busbar, as a specific embodiment, the connector cover plate 3 also has a protruding portion protruding outward from the box cover 1, the mounting structure is arranged on the protruding portion, and the inner side of the protruding portion has a concave cavity for communicating with the internal space of the box cover 1, thereby increasing the internal space of the battery box and facilitating the arrangement of the copper busbar. However, in other specific embodiments, the connector cover plate 3 can also be a flat plate structure.

[0053] like Figures 2-3 As shown, in order to more stably fix the connector cover 3 and the box cover 1, as a specific embodiment, the connector cover 3 is provided with the connecting edges 31 on all four sides, and each connecting edge 31 is connected with a screw 5. However, in other specific embodiments, the connecting edge 31 can also be provided on only one side of the connector cover 3.

[0054] In order to ensure the sealing of the connection between the connector cover plate 3 and the box cover 1, as a specific embodiment, a sealing ring is provided between the connection edge 31 and the box cover 1. However, in other specific embodiments, the sealing of the connection between the connector cover plate 3 and the box cover 1 can also be ensured by tightening the screws 5 and increasing the connection area between the connector cover plate 3 and the box cover 1.

[0055] like Figures 2-3 As shown in the figure, as a specific embodiment, the box cover 1 includes a top plate and side plates connected around the top plate, and the connector installation window 11 is set on the side plate. However, in other specific embodiments, the box cover 1 can also be a flat end cover, and the box cover 1 can be located at the top of the battery box or at the side of the battery box.

[0056] like Figures 2-3 As shown, as a specific embodiment, the connector cover 3 is also provided with a mounting portion for mounting a communication connector, and the communication connector is mounted on the connector cover 3 through the mounting portion, so that the communication connector can be pushed into the battery box together with the connector cover 3, and the communication connector does not need to be removed when the box cover 1 is removed, making maintenance more convenient. Of course, in other specific embodiments, the communication connector can also be installed on the box cover 1.

[0057] like Figures 2 to 4As shown, in order to facilitate the maintenance of the BMS module 6 without removing the box cover 1, as a specific embodiment, the box cover 1 is also provided with a BMS module maintenance window 12, and the BMS module cover plate 4 is fixedly connected to the BMS module maintenance window 12. The BMS module cover plate 4 has a connecting portion located on the outside of the box cover 1, and the connecting portion is fixedly connected to the box cover 1 through a screw 5 whose head is located on the outside of the box cover 1. Specifically, the BMS module maintenance window 12 is also provided on the side plate of the box cover 1, and the BMS module maintenance window 12 and the connector installation window 11 are provided on one side of the box cover 1, so as to facilitate the staff to repair the BMS module 6 and remove the BMS module cover plate 4 and the connector cover plate 3 when the box cover 1 needs to be opened. In normal operation, when the BMS module 6 has some minor problems, the BMS module 6 can be repaired through the BMS module maintenance window 12; but when the BMS module 6 has serious problems, it is necessary to remove the box cover 1 and repair the BMS module 6.

[0058] The specific embodiment of the battery box cover provided by the utility model is as follows:

[0059] The specific structure of the box cover of the battery box in this embodiment is the same as the specific structure of the box cover in the specific embodiment of the battery box of the utility model, and will not be repeated here.

[0060] Specific embodiments of the energy storage device provided by the utility model:

[0061] The energy storage device includes a shell and a battery box installed in the shell. The specific structure of the battery box in this embodiment is the same as the specific structure of the battery box in the specific embodiment of the battery box of the utility model, and will not be repeated here.

[0062] Specifically, the energy storage device is an energy storage container, and the shell is a container body; but in other specific embodiments, the energy storage device may also be other existing household energy storage cabinets or other energy storage devices, and the shell is a corresponding structure for installing a battery box.

[0063] Finally, it should be noted that the above are only preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery box cover, characterized in that: A connector installation window is provided on the box cover, a connector cover is fixed at the connector installation window, a mounting structure for installing the connector is provided on the connector cover, the connector cover has a connecting edge located on the inner side of the box cover, the connecting edge is fixedly connected to the box cover by screws, and the heads of the screws are located on the outer side of the box cover.

2. The battery box cover according to claim 1, characterized in that: The connector cover plate also has a protruding portion protruding outward from the box cover, the mounting structure is arranged on the protruding portion, and the inner side of the protruding portion has a concave cavity for communicating with the internal space of the box cover.

3. The battery box cover according to claim 1 or 2, characterized in that: The connector cover is provided with the connecting edges on all four sides.

4. The battery box cover according to claim 3, characterized in that: A sealing ring is arranged between the connecting edge and the box cover.

5. The battery box cover according to claim 1 or 2, characterized in that: The box cover comprises a top plate and side plates connected around the top plate, and the connector installation window is arranged on the side plates.

6. The battery box cover according to claim 1 or 2, characterized in that: The connector cover is also provided with a mounting portion for mounting the communication connector.

7. The battery box cover according to claim 1 or 2, characterized in that: A BMS module maintenance window is also provided on the box cover, to which a BMS module cover is fixedly connected. The BMS module cover has a connecting portion located on the outside of the box cover, and the connecting portion is fixedly connected to the box cover by a screw whose head is located on the outside of the box cover.

8. The battery box cover according to claim 1 or 2, characterized in that: The connector cover is a square cover.

9. A battery box, comprising a box cover and a lower box body, characterized in that: The box cover is the box cover according to any one of claims 1 to 8.

10. An energy storage device, comprising a housing and a battery box installed in the housing, characterized in that: The battery box is the battery box described in claim 9.

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