Control box and energy storage device

Abstract

A control box (100) and an energy storage device (1000). The control box (100) comprises: a box body (10), a weak current circuit (30), and a strong current circuit (40). The box body (10) has an accommodating chamber (11), the accommodating chamber (11) comprising a first accommodating chamber (111) and a second accommodating chamber (112) which are separated from each other. The weak current circuit (30) is located in the first accommodating chamber (111), and the strong current circuit (40) is located in the second accommodating chamber (112).

Description

Control box and energy storage device

[0001] Cross-reference to related applications

[0002] The present application is based on Chinese Patent Application No. 202422418304.1, filed on September 30, 2024, and claims priority to the aforementioned Chinese Patent Application, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of control boxes, and in particular to a control box and an energy storage device. BACKGROUND

[0004] The existing control box usually stacks the strong current loop and the weak current loop in one cavity. In order to ensure electrical safety, a certain safety distance needs to be set between the elements of the strong current loop and the weak current loop. Increasing the spacing of the elements will result in low space utilization of the control box, and compressing the spacing will result in poor electrical safety. SUMMARY

[0005] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0006] To this end, one purpose of the present disclosure is to provide a control box that can reduce signal interference between the strong current loop and the weak current loop, while improving the space utilization in the accommodation cavity.

[0007] Another purpose of the present disclosure is to provide an energy storage device having the above-mentioned control box.

[0008] The control box according to the embodiments of the present disclosure comprises a box body having an accommodation cavity, the accommodation cavity comprising a first accommodation cavity and a second accommodation cavity separated by a partition; a weak current loop located in the first accommodation cavity; and a strong current loop located in the second accommodation cavity.

[0009] The control box according to the embodiments of the present disclosure can reduce signal interference between the strong current loop and the weak current loop by arranging the weak current loop and the strong current loop in two cavities separated by a partition, and spacing the weak current loop and the strong current loop. With less signal interference, the distance between the weak current loop and the strong current loop can be easily reduced, which is beneficial to improving the space utilization in the accommodation cavity and facilitating the miniaturization of the control box.

[0010] The energy storage device according to the embodiments of the present disclosure comprises a battery module and the control box as described in the above embodiments, and the battery module and the control box are electrically connected.

[0011] According to the energy storage device of the embodiment of the present disclosure, by adopting the control box of the above-mentioned embodiment, by connecting the weak current loop and the strong current loop to the two sides of the thickness direction of the partition plate respectively, the weak current loop and the strong current loop are arranged in a spaced manner, the signal interference between the strong current loop and the weak current loop can be reduced, the distance between the weak current loop and the strong current loop is reduced, the space utilization rate in the accommodating cavity is improved, and the miniaturization of the control box is facilitated.

[0012] Additional aspects and advantages of the present disclosure will be described in the following description, become apparent from the following description, or be learned by practice of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is an exploded structural view of the control box of the embodiment of the present disclosure;

[0014] Fig. 2 is a structural schematic view of the control box of the embodiment shown in Fig. 1;

[0015] Fig. 3 is a three-dimensional structural schematic view of the control box on one side of the first accommodating cavity according to the embodiment of the present disclosure;

[0016] Fig. 4 is a structural schematic view of the control box on one side of the first accommodating cavity according to the embodiment of the present disclosure;

[0017] Fig. 5 is a three-dimensional structural schematic view of the control box on one side of the second accommodating cavity according to the embodiment of the present disclosure;

[0018] Fig. 6 is a structural schematic view of the control box on one side of the second accommodating cavity according to the embodiment of the present disclosure;

[0019] Fig. 7 is a schematic view of the air guide plate and the heat dissipation air direction of the control box according to the embodiment of the present disclosure;

[0020] Fig. 8 is a structural schematic view of the energy storage device of the embodiment of the present disclosure.

[0021] 1000, battery module 200, control box 100, box body 10, accommodating cavity 11, first accommodating cavity 111, second accommodating cavity 112, air inlet 12, air outlet 13, dustproof structure 14, grid structure 141, filter screen 142, driving fan 15, partition plate 20, first surface 21, second surface 22, wiring hole 23, weak current circuit 30, insulation detector 31, insulation sensor 32, high-voltage sampler 33, control unit 34, strong current circuit 40, mounting surface S1, positive electrode circuit 41, positive electrode element 410, positive electrode main contactor 411, positive electrode current detector 412, positive electrode fuse 413, positive electrode copper bar 414, positive electrode plug 415, negative electrode circuit 42, negative electrode element 420, negative electrode main contactor 421, negative electrode current detector 422, negative electrode fuse 423, negative electrode copper bar 424, negative electrode plug 425, pre-charging circuit 43, air guide baffle 50, air passing channel 51, air passing opening 52, magnetic ring 60, first cover plate 71, second cover plate 72. DETAILED DESCRIPTION

[0022] Embodiments of the present disclosure are described below in detail with reference to examples shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present disclosure and cannot be understood as a limitation of the present disclosure.

[0023] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "center", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the features defined with "first", "second" can be explicitly or implicitly included one or more features. In the description of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0024] In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0025] The control box 100 and the energy storage device 1000 according to embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0026] As shown in FIGS. 1-6, the control box 100 according to embodiments of the present disclosure includes a box body 10, a weak current circuit 30, and a strong current circuit 40. The box body 10 has a receiving cavity 11 including a first receiving cavity 111 and a second receiving cavity 112 separated by a partition wall. The weak current circuit 30 is located in the first receiving cavity 111, and the strong current circuit 40 is located in the second receiving cavity 112.

[0027] It can be understood that the strong current circuit 40 generates an electromagnetic field around when powered on, which easily causes signal interference to the weak current circuit 30 and its connecting wire harness, affecting the working stability of the weak current circuit 30. In order to reduce the signal interference of the strong current circuit 40 to the weak current circuit 30, the spacing between the weak current circuit 30 and the strong current circuit 40 needs to be increased, resulting in a decrease in the space utilization in the control box 100 and an increase in the volume of the control box 100.

[0028] By separating the weak current circuit 30 and the strong current circuit 40 in the first receiving cavity 111 and the second receiving cavity 112, the strong current circuit 40 is spaced apart from the weak current circuit 30, and the partition wall between the first receiving cavity 111 and the second receiving cavity 112 can play a role in isolating the electromagnetic field, thereby reducing or avoiding the electromagnetic interference of the strong current circuit 40 to the weak current circuit 30. At the same time, the connection of the connecting wire harness of the weak current circuit 30 and the connecting wire harness of the strong current circuit 40 is reduced or avoided, further reducing or avoiding the electromagnetic interference of the strong current circuit 40 to the weak current circuit 30, and improving the working stability of the strong current circuit 40 and the weak current circuit 30.

[0029] In addition, since the electromagnetic fields between the weak current circuit 30 and the strong current circuit 40 can be separated after being thus distributed, even if the weak current circuit 30 and the strong current circuit 40 are arranged close to each other, the functions of the weak current circuit 30 and the strong current circuit 40 are not affected, so the weak current circuit 30 and the strong current circuit 40 can be arranged closely, i.e., the spacing between the weak current circuit 30 and the strong current circuit 40 can be appropriately reduced, thereby being conducive to improving the space utilization in the receiving cavity 11 and being conducive to the miniaturization of the control box 100.

[0030] In addition, by separating the weak current circuit 30 and the strong current circuit 40 in different cavities, the amount of wire harness crossing between the two is reduced, which is convenient for the separate installation or maintenance of the weak current circuit 30 or the strong current circuit 40.

[0031] Therefore, the control box 100 of the present disclosure can reduce the signal interference between the strong current loop 40 and the weak current loop 30 by arranging the weak current loop 30 and the strong current loop 40 in different cavities respectively, and can reduce the distance between the weak current loop 30 and the strong current loop 40, improve the space utilization in the accommodating cavity 11, and facilitate the miniaturization of the control box 100.

[0032] Here, the control box 100 can be a general electric control box, or a control box, etc.

[0033] In some embodiments, as shown in FIG. 2, the control box 100 further comprises a partition plate 20, which divides the accommodating cavity 11 into a first accommodating cavity 111 and a second accommodating cavity 112. In this way, the first accommodating cavity 111 and the second accommodating cavity 112 are very simple to obtain.

[0034] Specifically, the partition plate 20 has opposite first and second surfaces 21 and 22, the first surface 21 faces the first accommodating cavity 111, and the second surface 22 faces the second accommodating cavity 112. The weak current loop 30 is arranged on the first surface 21, and the strong current loop 40 is arranged on the second surface 22. That is, the strong current loop 40 and the weak current loop 30 are arranged on both sides of the thickness direction of the partition plate 20. In this way, the distance between the strong current loop 40 and the weak current loop 30 is almost only the thickness of the partition plate 20, and the distance is small, which is more conducive to improving the space utilization in the accommodating cavity 11 and facilitating the miniaturization of the control box 100.

[0035] In the present disclosure, the materials of the box body 10 and the partition plate 20 are not limited. For example, the box body 10 and the partition plate 20 are plastic insulating parts, which can improve their insulation performance, improve the electrical safety of the control box 100, and facilitate the lightweight of the control box 100. For another example, the box body 10 is a metal part, which can improve the structural strength of the box body 10.

[0036] Preferably, the partition plate 20 is a magnetic shielding part, which can further reduce the signal interference between the strong current loop 40 and the weak current loop 30.

[0037] Preferably, the volume of the first accommodating cavity 111 is greater than the volume of the second accommodating cavity 112. It can be understood that the heat generation of the weak current loop 30 is lower than that of the strong current loop 40, and the larger volume of the second accommodating cavity 112 can improve the heat dissipation efficiency of the strong current loop 40, and the smaller volume of the first accommodating cavity 111 can improve the space utilization of the accommodating cavity 11.

[0038] In some embodiments, as shown in FIG. 4 and FIG. 7, the partition plate 20 is provided with a wiring hole 23 penetrating in the thickness direction.

[0039] Thus, when an electrical connection is required between an element of the low-voltage circuit 30 and an element of the high-voltage circuit 40, the conductive wire harness can pass through the wiring hole 23 to electrically connect to the low-voltage circuit 30 and the high-voltage circuit 40, thereby satisfying the electrical connection requirement between the low-voltage circuit 30 and the high-voltage circuit 40.

[0040] It should be noted that, according to the layout of the low-voltage circuit 30 on the first surface 21, the layout of the high-voltage circuit 40 on the second surface 22, and the electrical connection requirement between the low-voltage circuit 30 and the high-voltage circuit 40, the wiring hole 23 can be arranged at different positions of the partition 20.

[0041] In some embodiments, as shown in FIG. 6, the high-voltage circuit 40 includes a positive circuit 41 and a negative circuit 42. The positive circuit 41 includes a plurality of positive elements 410 arranged along a first direction, and the negative circuit 42 includes a plurality of negative elements 420 arranged along the first direction.

[0042] The positive circuit 41 and the negative circuit 42 are arranged along a second direction, and the first direction intersects the second direction. That is, the direction in which the positive circuit 41 and the negative circuit 42 are arranged is not parallel to the direction in which the plurality of positive elements 410 are arranged. The direction in which the positive circuit 41 and the negative circuit 42 are arranged is not parallel to the direction in which the plurality of negative elements 420 are arranged.

[0043] For example, in the example shown in FIG. 6, the first direction is the length direction of the control box 100, and the second direction is the width direction of the control box 100. The positive circuit 41 includes a plurality of positive elements 410 arranged along the length direction of the control box 100, and the negative circuit 42 includes a plurality of negative elements 420 arranged along the length direction of the control box 100. The positive circuit 41 and the negative circuit 42 are arranged along the width direction of the control box 100.

[0044] It can be understood that electrical connectors need to be arranged between the positive elements 410 or between the negative elements 420 to achieve electrical conduction between the positive elements 410 or between the negative elements 420.

[0045] Thus, the positive elements 410 and the negative elements 420 are arranged along the first direction, which can simplify the layout of the positive circuit 41 and the negative circuit 42, and the positive copper bars 414 between the plurality of positive elements 410 and the negative copper bars 424 between the plurality of negative elements 420 can also be arranged along the first direction, which can simplify the structure of the positive copper bars 414 and the negative copper bars 424, reduce the installation difficulty, and reduce the manufacturing cost of the positive copper bars 414 and the negative copper bars 424.

[0046] Meanwhile, the positive circuit 41 and the negative circuit 42 are arranged along the second direction at intervals, so that the positive circuit 41 and the negative circuit 42 can be prevented from crossing each other, the layout of the strong current circuit 40 can be simplified, and the crosstalk between the positive circuit 41 and the negative circuit 42 can be reduced, thereby improving the electrical safety of the strong current circuit 40.

[0047] In addition, when the ventilation device is arranged in the second accommodating cavity 112, the positive circuit 41 and the negative circuit 42 can block the airflow in the second accommodating cavity 112, so that the airflow can flow along the first direction under the blocking of the positive circuit 41 and the negative circuit 42, that is, a heat dissipation air duct is formed between the positive circuit 41 and the negative circuit 42, and the heat dissipation of the positive circuit 41 and the negative circuit 42 can be realized.

[0048] In the present disclosure, the types and connection relationships of the positive element 410 and the negative element 420 are not limited. For example, in the example of FIG. 6, the plurality of positive elements 410 include the positive main contactor 411, the positive current detector 412 and the positive fuse 413 arranged along the first direction in sequence; and the plurality of negative elements 420 include the negative fuse 423, the negative current detector 422 and the negative main contactor 421 arranged along the first direction in sequence.

[0049] Preferably, the positive copper bar 414 and the negative copper bar 424 have a structure of a long strip extending along the first direction.

[0050] Preferably, the first direction is perpendicular to the second direction, so that the distance between each position of the positive circuit 41 and the negative circuit 42 is stable, the layout of the positive circuit 41 and the negative circuit 42 is further simplified, and the installation or maintenance of the positive circuit 41 and the negative circuit 42 is facilitated.

[0051] Further, the positive circuit 41 further includes the positive plug 415, the positive plug 415 is located at both ends of the positive circuit 41 along the first direction, one end of the positive plug 415 extends to the outside of the cabinet 10, and the other end is electrically connected to the positive element 410 inside the cabinet 10, so that the positive circuit 41 realizes electrical connection with the external circuit of the cabinet 10 through the positive plug 415.

[0052] Meanwhile, the negative circuit 42 further includes the negative plug 425, the negative plug 425 is located at both ends of the negative circuit 42 along the first direction, one end of the negative plug 425 extends to the outside of the cabinet 10, and the other end is electrically connected to the positive element 410 inside the cabinet 10, so that the negative circuit 42 realizes electrical connection with the external circuit of the cabinet 10 through the negative plug 425.

[0053] Further, as shown in FIG. 6, the strong current loop 40 further comprises a pre-charge loop 43 arranged between the positive loop 41 and the negative loop 42. In this way, the distance between the positive loop 41 and the negative loop 42 can be increased, and the electrical safety of the strong current loop 40 can be further improved. Meanwhile, the pre-charge loop 43 is arranged in the gap between the positive loop 41 and the negative loop 42, and the space utilization in the second accommodating cavity 112 can be improved.

[0054] In the present disclosure, the structure of the pre-charge loop 43 is not limited. For example, the pre-charge loop 43 comprises a pre-charge resistor.

[0055] In some embodiments, as shown in FIG. 6, the plurality of positive elements 410 and the plurality of negative elements 420 are arranged on the same mounting surface S1 in one-to-one correspondence, and the corresponding positive element 410 and negative element 420 are arranged in central symmetry on the mounting surface S1. For example, the mounting surface S1 is a rectangular surface, and the number of positive elements 410 and negative elements 420 is equal. Each positive element 410 has a negative element 420 arranged in central symmetry on the mounting surface S1.

[0056] It can be understood that different types of positive elements 410 or negative elements 420 have different heat generation amounts.

[0057] In this way, by arranging the corresponding positive element 410 and negative element 420 in central symmetry on the mounting surface S1, the positive element 410 and negative element 420 with high heat generation amount are arranged in central symmetry on the mounting surface S1. The distance between the positive element 410 and negative element 420 with high heat generation amount can be increased, so that the local temperature of the strong current loop 40 on the mounting surface S1 can be reduced or avoided from being too high, and the heat distribution in the strong current loop 40 can be more uniform.

[0058] Preferably, the positive element 410 with high heat generation amount is arranged at one end of the positive loop 41 along the first direction, and the negative element 420 with high heat generation amount in the negative loop 42 is arranged in central symmetry with the positive element 410 on the mounting surface S1. In this way, the distance between the positive element 410 and negative element 420 with high heat generation amount can be increased, so that the heat concentration in the strong current loop 40 can be avoided or reduced.

[0059] In the present disclosure, the type and arrangement order of the positive element 410 or negative element 420 are not limited. For example, in the example of FIG. 6, the plurality of positive elements 410 along the first direction from right to left are a positive main contactor 411, a positive current detector 412, and a positive fuse 413; and the plurality of negative elements 420 along the first direction from right to left are a negative fuse 423, a negative current detector 422, and a negative main contactor 421.

[0060] In some embodiments, as shown in FIG. 1, the box 10 is provided with an air inlet 12 and an air outlet 13 communicating with the second accommodating cavity 112, and at least one of the air inlet 12 and the air outlet 13 is provided with a driving fan 15.

[0061] Thus, the driving fan 15 can drive air to enter and flow through the second accommodating cavity 112 and then leave the second accommodating cavity 112, so as to achieve heat dissipation of the strong current circuit 40.

[0062] Further, as shown in FIG. 1, at least one of the air inlet 12 and the air outlet 13 is provided with a dustproof structure 14, which includes a grid structure 141 or a filter screen 142, or both the grid structure 141 and the filter screen 142.

[0063] Thus, it can be avoided or reduced that the grid structure 141 and the filter screen 142 can block impurities (such as large stones) from entering the second accommodating cavity 112 through the air inlet 12 or the air outlet 13, so as to avoid or reduce the risk that the impurities enter the second accommodating cavity 112 to damage the strong current circuit 40 or cause a short circuit in the strong current circuit 40, and improve the electrical safety of the strong current circuit 40.

[0064] In some embodiments, as shown in FIG. 1, the control box 100 further includes a wind guide baffle 50, which is arranged in the second accommodating cavity 112, and a wind passage 51 is formed between the wind guide baffle 50 and the inner wall of the second accommodating cavity 112, the strong current circuit 40 is located in the wind passage 51, and at least one of the air inlet 12 and the air outlet 13 corresponds to the wind passage 51.

[0065] Thus, the wind guide baffle 50 can define the flow direction of the air flow in the second accommodating cavity 112, so that the air flow flows in the wind passage 51, the air flow is more concentrated, the flow efficiency of the air flow in the second accommodating cavity 112 is improved, the air flow loop is reduced or avoided, the heat dissipation effect of the strong current circuit 40 is improved, the temperature of the strong current circuit 40 is reduced, and the temperature between the elements of the strong current circuit 40 is more uniform.

[0066] In the example of FIG. 7, a wind guide baffle 50 is shown to define a wind passage 51 and an air flow direction in the second accommodating cavity 112. The wind guide baffle 50 is provided with a wind passage 52, and the air flow passes through the wind guide baffle 50 from the wind passage 52. After the air flow enters the second accommodating cavity 112 through the air inlet 12, it successively passes through the wind passages 52 of the multiple wind guide baffles 50 along the wind passage 51, and finally leaves the second accommodating cavity 112 from the air outlet 13.

[0067] In some embodiments, the control box 100 further includes an insulation sensor 32 arranged on the second surface 22, the weak current circuit 30 includes an insulation detector 31 arranged on the first surface 21, and the insulation sensor 32 is electrically connected to the insulation detector 31.

[0068] Therefore, the insulation sensor 32 is used to detect whether leakage occurs at the strong current loop 40, so as to improve the electrical safety of the control box 100.

[0069] Meanwhile, the projection of the insulation sensor 32 on the first surface 21 is located within the projection range of the insulation detector 31 on the first surface 21, so that the insulation sensor 32 can be directly electrically connected with the insulation detector 31 through the through partition 20, and the electrical connection distance between the insulation sensor 32 and the insulation detector 31 can be shortened.

[0070] In the present disclosure, the types and arrangement of the elements in the weak current loop 30 are not limited. For example, in the example of FIG. 4, the weak current loop 30 includes the insulation detector 31, the high-voltage sampler 33, and the control unit 34.

[0071] In some embodiments, the box body 10 and the partition 20 are insulating members, for example, the box body 10 and the partition 20 are plastic members.

[0072] Therefore, the connection firmness between the partition 20 and the box body 10 can be improved, so as to improve the stability of the connection of the strong current loop 40 and the weak current loop 30 to the partition 20, and further improve the electrical safety of the strong current loop 40 and the weak current loop 30.

[0073] Optionally, the box body 10 and the partition 20 are integral members. Therefore, the position firmness of the partition 20 on the box body 10 can be improved, and the electrical safety of the strong current loop 40 and the weak current loop 30 is further ensured.

[0074] In some embodiments, as shown in FIG. 4, the control box 100 further includes a magnetic ring 60 arranged on the first surface 21. The magnetic ring 60 can be used to improve the anti-interference ability of the wire harness in the weak current loop 30, so as to improve the signal stability of the weak current loop 30.

[0075] In some embodiments, as shown in FIG. 1 and FIG. 3, the control box 100 further includes a first cover plate 71 and a second cover plate 72. The first cover plate 71, the box body 10, and the partition 20 enclose to form a first accommodating cavity 111, and the second cover plate 72, the box body 10, and the partition 20 enclose to form a second accommodating cavity 112.

[0076] In the present disclosure, the materials of the first cover plate 71 and the second cover plate 72 are not limited. For example, the first cover plate 71 and the second cover plate 72 are insulating members, which can improve the insulation performance, improve the electrical safety of the control box 100, and facilitate the lightweight of the control box 100. Optionally, the first cover plate 71 and the second cover plate 72 are plastic members. For another example, the first cover plate 71 and the second cover plate 72 are metal members, which can improve the structural strength of the box body 10.

[0077] Further, the first cover plate 71 and the box body 10, and the second cover plate 72 and the box body 10 are provided with sealing members, so that the sealing performance between the first cover plate 71 and the box body 10, and between the second cover plate 72 and the box body 10 can be improved, liquid can be prevented from entering the accommodating cavity 11, and the electrical safety of the control box 100 can be improved.

[0078] In the present disclosure, the manner in which the first cover plate 71 and the second cover plate 72 are connected to the box body 10 is not limited.

[0079] In some embodiments, the box body 10 is provided with a bracket mounting position on the outer peripheral surface, and the bracket mounting position is used to connect an external fixing structure, so that the box body 10 can be fixed to different installation environments.

[0080] According to the energy storage device 1000 of the embodiments of the present disclosure, as shown in FIG. 8, the energy storage device 1000 comprises a battery module 200 and the control box 100 of the above-mentioned embodiments, and the battery module 200 and the control box 100 are electrically connected.

[0081] The energy storage device 1000 of the present disclosure, by using the control box 100 of the above-mentioned embodiments, by connecting the weak current loop 30 and the strong current loop 40 to the two sides of the thickness direction of the partition plate 20 respectively, the weak current loop 30 and the strong current loop 40 are arranged in a spaced manner, the signal interference between the strong current loop 40 and the weak current loop 30 can be reduced, at the same time, the distance between the weak current loop 30 and the strong current loop 40 is reduced, the space utilization rate in the accommodating cavity 11 is improved, and the miniaturization of the control box 100 is facilitated.

[0082] The other configurations and operations of the control box 100 and the energy storage device 1000 according to the embodiments of the present disclosure are known to those skilled in the art, and will not be described in detail here.

[0083] In the description of the present disclosure, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", 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 disclosure. In the present disclosure, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the present disclosure have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. A control box, wherein, The application relates to a control box for a battery module. The control box comprises: a box body having a receiving cavity, the receiving cavity comprising a first receiving cavity and a second receiving cavity separated by a partition; a weak current circuit located in the first receiving cavity; 2. The control box of claim 1, wherein, a strong current circuit located in the second receiving cavity. The strong current circuit comprises: a positive electrode circuit comprising a plurality of positive electrode elements arranged in a first direction; a negative electrode circuit comprising a plurality of negative electrode elements arranged in the first direction; 3. The control box of claim 2, wherein, wherein the positive electrode circuit and the negative electrode circuit are arranged in a second direction, and the first direction intersects the second direction.

4. The control box of any one of claims 2 or 3, wherein, The strong current circuit further comprises a pre-charging circuit located between the positive electrode circuit and the negative electrode circuit.

5. The control box of any one of claims 1-4, wherein, The plurality of positive electrode elements and the plurality of negative electrode elements are located on the same mounting surface and correspond to each other, and the corresponding positive electrode elements and negative electrode elements are arranged in a central symmetry on the mounting surface.

6. The control box of claim 5, wherein, The box body is provided with an air inlet and an air outlet communicating with the second receiving cavity, and at least one of the air inlet and the air outlet is provided with a driving fan.

7. The control box of any one of claims 5 or 6, wherein, At least one of the air inlet and the air outlet is provided with a dustproof structure, and the dustproof structure comprises a grid structure and / or a filter screen.

8. The control box of any one of claims 1-7, wherein, The control box further comprises an air guide baffle located in the second receiving cavity, and an air passage is formed between the air guide baffle and the inner wall of the second receiving cavity, and the strong current circuit is located in the air passage, and at least one of the air inlet and the air outlet is arranged corresponding to the air passage. The control box further comprises: a partition plate separating the receiving cavity into the first receiving cavity and the second receiving cavity, the partition plate having a first surface and a second surface opposite to each other, the first surface facing the first receiving cavity, and the second surface facing the second receiving cavity; 9. The control box of claim 8, wherein, the weak current circuit is arranged on the first surface, and the strong current circuit is arranged on the second surface. The control box further comprises:

10. The control box of any one of claims 8 or 9, wherein, an insulation sensor arranged on the second surface, the weak current circuit comprising an insulation detector arranged on the first surface, the insulation sensor being electrically connected to the insulation detector, and a projection of the insulation sensor on the first surface being located in a projection range of the insulation detector on the first surface.

11. The control box of any one of claims 8-10, wherein, The box body and the partition plate are insulating members.

12. An energy storage device, wherein, The box body and the partition plate are integrated. The application further relates to a battery module and a control box as claimed in any one of claims 1-11, and the battery module and the control box are electrically connected.

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