Circuit board assembly and energy storage device

Abstract

The utility model discloses a circuit board assembly and energy storage equipment, the circuit board assembly comprises a shell assembly, the shell assembly comprises a first shell and a second shell which are separately arranged along a first direction, the first shell comprises two first side walls which are oppositely arranged in a second direction, and each first side wall is provided with a first clamping groove which is through along the second direction; the first clamping groove is provided with a first groove wall and a second groove wall which are oppositely arranged in the third direction, the first groove wall is provided with a limiting protrusion extending in the direction close to the second groove wall, the limiting protrusion and the second groove wall are arranged at intervals to form a groove opening, and the second shell comprises two second side walls oppositely arranged in the second direction; and each second side wall is convexly provided with a clamping part extending towards the interior of the second shell, the clamping part is inserted into the first clamping groove from one notch, and one clamping part is connected with one limiting bulge in a clamping manner. According to the circuit board assembly and the energy storage equipment, the installation process of the shell assembly of the circuit board assembly can be simplified, and the assembly efficiency of the shell assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a circuit board assembly and an energy storage device. BACKGROUND

[0002] The circuit board assembly is one of the important components of the energy storage device, and is mainly used to convert the internal current of the energy storage device between direct current and alternating current, for example, to convert the direct current output by the battery assembly into alternating current, so as to facilitate the outdoor use of the energy storage device.

[0003] In the related art, the circuit board assembly includes a shell and a circuit board arranged inside the shell. In order to facilitate the assembly of the circuit board inside the shell, the shell is generally provided in a split manner and is fixed by screws. In order to improve the stability of the split shell connection, a large number of screws are used, which leads to a complicated installation process of the shell assembly and low assembly efficiency. CONTENT OF THE UTILITY MODEL

[0004] The present application discloses a circuit board assembly and an energy storage device, which can simplify the installation process of the shell assembly of the circuit board assembly and improve the assembly efficiency of the shell assembly.

[0005] In order to achieve the above-mentioned purpose, in a first aspect, the present application discloses a circuit board assembly, which has a first direction, a second direction and a third direction perpendicular to each other, and comprises:

[0006] a shell assembly, the shell assembly includes a first shell and a second shell arranged in a split manner along the first direction, the first shell is connected with the second shell, and a containing space is formed between the first shell and the second shell; and

[0007] a circuit board, the circuit board is arranged in the containing space;

[0008] The first shell includes two first side walls arranged opposite to each other in the second direction, each first side wall is provided with a first clamping groove penetrating in the second direction, the first clamping groove has a first groove wall and a second groove wall arranged opposite to each other in the third direction, the first groove wall is provided with a limiting protrusion extending in a direction close to the second groove wall, the limiting protrusion and the second groove wall are arranged in a spaced manner to form a slot, and the limiting protrusion and the groove bottom wall of the first clamping groove in the first direction are arranged in a spaced manner, the second shell includes two second side walls arranged opposite to each other in the second direction, the two first side walls are located between the two second side walls, each second side wall is provided with a clamping part extending into the second shell, one clamping part is inserted into one first clamping groove from one slot, and one clamping part is connected with one limiting protrusion in a clamping manner.

[0009] The circuit board assembly of the present application sets the first clamping groove on the first side wall of the first shell, sets the limiting protrusion on the first groove wall of the first clamping groove, and forms a notch between the limiting protrusion and the second groove wall. When the second shell is assembled to the first shell, the clamping part on the second side wall of the second shell can be inserted into the first clamping groove from the notch. Pushing the second shell can make the clamping part move in the third direction until the clamping part is connected to the limiting protrusion and the groove bottom wall, so that the limiting protrusion can limit the second shell from separating from the first shell in the first direction. In this way, during the installation of the first shell and the second shell, each clamping part on the two second side walls can be correspondingly matched to the notch of the first clamping groove on the first side wall. After the clamping part enters the first clamping groove, pushing the second shell in the third direction can simultaneously realize the connection of each clamping part, thereby simplifying the installation process of the shell assembly and improving the assembly efficiency of the shell assembly.

[0010] As an optional implementation, in the embodiment of the first aspect of the present application, the clamping part includes an angle-connected first part and a second part, the first part is protruding on the second side wall and extends to the inside of the second shell, the second part extends in the third direction, the first part is connected between the limiting protrusion and the groove bottom wall, and the second part is located in the first shell and is connected to the first side wall.

[0011] By setting the clamping part into two parts, the first part is connected between the limiting protrusion and the groove bottom wall to limit the position of the second shell in the first direction, and the second part is connected to the first side wall to limit the position of the second shell in the second direction, thereby improving the firmness of the clamping part and the first clamping groove, and improving the stability of the connection between the second shell and the first shell.

[0012] As an optional implementation, in the embodiment of the first aspect of the present application, each second side wall is provided with a second clamping groove penetrating in the second direction, the second clamping groove has a third groove wall and a fourth groove wall oppositely arranged in the third direction, the first part is protruding on the third groove wall, and the second part extends in the third direction towards the fourth groove wall.

[0013] By forming a second clamping groove on the second side wall and setting the clamping part on the third groove wall of the second clamping groove, the setting position of the clamping part can be visualized. When the second shell is assembled to the first shell, the assembly position of the clamping part can be determined through the second clamping groove, so that the clamping part can be accurately positioned in the notch and then connected to the second clamping groove, thereby reducing assembly errors and improving assembly efficiency.

[0014] As an optional implementation, in the embodiment of the first aspect of the present application, the shell assembly is in a cuboid structure, the first direction is the height direction of the shell assembly, the second direction is the width direction of the shell assembly, and the third direction is the length direction of the shell assembly.

[0015] Each of the first side walls is provided with a plurality of first clamping grooves arranged at intervals along the third direction, and each of the second side walls is provided with a plurality of clamping portions arranged at intervals along the third direction, the plurality of clamping portions and the plurality of first clamping grooves being one-to-one correspondingly inserted.

[0016] By providing a plurality of first clamping grooves on each first side wall, a plurality of clamping portions on each second side wall, and one-to-one corresponding insertion of the plurality of clamping portions and the plurality of first clamping grooves, the firmness of the connection between the first shell and the second shell can be improved, and the plurality of clamping portions can be simultaneously aligned to the first clamping grooves. After alignment, pushing the second shell can simultaneously achieve the connection of a plurality of positions, one step, simplify the assembly process, and improve the assembly efficiency.

[0017] As an optional implementation, in the embodiment of the first aspect of the present application, the first shell further comprises a third side wall provided in the third direction, the third side wall being connected between the two first side walls, the third side wall being provided with a first bending portion bent towards the inside of the shell assembly, the first bending portion being provided with a first threaded hole penetrating along the first direction, and the second shell being provided with a first through hole penetrating along the first direction.

[0018] The circuit board assembly further comprises a first fastener, the first fastener penetrating through the first through hole and being screwed into the first threaded hole.

[0019] By extending the first bending portion on the third side wall to provide the first threaded hole and providing the first through hole on the second shell for the first fastener to penetrate, the screwing of the first shell and the second shell is achieved. On the basis of the clamping portion and the first clamping groove being matched and connected between the first shell and the second shell to achieve the connection, the firmness of the connection between the two shells can be further improved.

[0020] As an optional implementation, in the embodiment of the first aspect of the present application, the first bending portion is provided with a first notch, the second shell is provided with a second notch, the second notch being communicated with the first notch, and the first notch and the second notch being used for penetrating a wire electrically connected with the circuit board.

[0021] When the second shell is assembled with the first shell, the second shell and the first bending part are stacked in the first direction, so that the first notch and the second notch are communicated and communicated with the accommodating space of the shell assembly, so that the first notch and the second notch can be used together for the wire connected with the circuit board to pass through, so as to facilitate the arrangement and fixation of the wire.

[0022] As an optional implementation, in the embodiment of the first aspect of the application, one end of the second shell in the third direction is provided with a fourth side wall connected between the two second side walls, and the fourth side wall abuts against the outer surface of the first shell.

[0023] When the second shell is connected with the first shell, the clamping part on the second shell can be aligned and inserted into the slot first, at this time the second shell and the first shell are staggered in the third direction, under the pushing action, the second shell can move along the third direction, so that the clamping part also moves with the second shell, until the first part of the clamping part moves between the limiting protrusion and the first clamping groove. In order to realize the connection reliability of the second shell and the first shell, by providing a fourth side wall at one end of the second shell, during the movement of the second shell in the third direction, the fourth side wall can abut against the first shell and cannot be pushed further, so as to ensure that the clamping part of the second shell is clamped in place with the first clamping groove, and the end of the second shell is aligned with the end of the first shell, thereby ensuring the assembly precision between the second shell and the first shell, and realizing the effective connection of the second shell and the first shell.

[0024] As an optional implementation, in the embodiment of the first aspect of the application, the circuit board is provided with an electrical connection terminal, the fourth side wall is provided with a third notch to expose the electrical connection terminal, the fourth side wall is provided with a second bending part on both sides along the second direction, the first side wall is located between the second bending part, each second bending part is provided with a second through hole penetrating along the second direction, and each first side wall is provided with a second threaded hole penetrating along the second direction.

[0025] The circuit board assembly further comprises a second fastener, the second fastener passes through the second through hole and is screwed into the second threaded hole.

[0026] By providing the second bending part on both sides of the fourth side wall along the second direction to cover the outside of the first side wall, and providing the second through hole on the second bending part and the second threaded hole on the first side wall, and connecting the second through hole and the second threaded hole by the second fastener, the connection between the second shell and the first shell is further realized, and the reliability of the connection between the first shell and the second shell can be further improved on the basis of the connection between the first shell and the second shell through the cooperation of the clamping part and the first clamping groove and the first fastener.

[0027] As an optional implementation, in the embodiment of the first aspect of the present application, the inner bottom surface of the first shell in the first direction is convexly provided with a connecting column extending in the first direction, and an end of the connecting column away from the inner bottom surface is connected with the circuit board, so that the circuit board and the inner bottom surface have a spacing therebetween.

[0028] The gap between the circuit board and the inner bottom surface of the first shell can be utilized to facilitate heat dissipation of the circuit board, and meanwhile, the circuit board can be prevented from being in large-area contact with the inner bottom surface of the first shell, so that the risk of circuit short circuit can be reduced.

[0029] As an optional implementation, in the embodiment of the first aspect of the present application, the first shell is provided with a third through hole, the circuit board is provided with a third threaded hole, and the circuit board assembly further comprises a third fastener, the third fastener penetrating through the third through hole and being screwed into the third threaded hole.

[0030] On the basis that the circuit board is spaced apart from the first shell under the action of the connecting column, the third fastener is used to penetrate the third through hole and the third threaded hole to be connected, so as to fix the circuit board.

[0031] As an optional implementation, in the embodiment of the first aspect of the present application, the inner surface of the first shell is provided with a first insulating layer, and / or the inner surface of the second shell is provided with a second insulating layer.

[0032] By providing the insulating layer on the inner surface of the first shell and / or the second shell, the circuit board and the shell assembly can be electrostatically isolated, so that the internal short circuit condition can be avoided.

[0033] In a second aspect, the present application further discloses an energy storage device comprising the circuit board assembly of the first aspect.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] The application provides a circuit board assembly and an energy storage device, the circuit board assembly comprising a housing assembly and a circuit board, the housing assembly comprising a first housing and a second housing arranged separately along a first direction, when the first housing and the second housing are assembled, the clamping portions on the two second side walls can be inserted into the first clamping groove from the slot, and pushing the second housing can make the clamping portions move along a third direction until the clamping portions are clamped and connected between the limiting protrusions and the groove bottom wall of the first clamping groove, so that the limiting protrusions can limit the second housing from separating from the first housing along the first direction. In this way, during the installation of the first housing and the second housing, each clamping portion on the two second side walls can be corresponded to the slot of the first clamping groove on the first side wall one by one, and after the clamping portion enters the first clamping groove, pushing the second housing along the third direction can simultaneously realize the connection of each clamping portion, thereby, the installation process of the housing assembly can be simplified, and the assembly efficiency of the housing assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0037] Figure 1 A structural schematic view of the circuit board assembly disclosed by the application from one angle;

[0038] Figure 2 A structural schematic view of the circuit board assembly disclosed by the application from one angle; Figure 1 A sectional view in A-A direction;

[0039] Figure 3 A structural schematic view of the first housing disclosed by the application;

[0040] Figure 4 A structural schematic view of the second housing disclosed by the application;

[0041] Figure 5 A structural schematic view of the circuit board assembly disclosed by the application from another angle;

[0042] Figure 6 A structural schematic view of the circuit board assembly disclosed by the application from another angle; Figure 5 A sectional view in B-B direction;

[0043] Figure 7 A structural schematic view of the circuit board assembly disclosed by the application from another angle; Figure 5 A sectional view in C-C direction;

[0044] Figure 8 A structural schematic view of the circuit board assembly disclosed by the application from another angle;

[0045] Figure 9Exploded structural schematic diagram of the circuit board assembly disclosed in the present application;

[0046] Figure 10 Exploded structural schematic diagram of the first shell, the first insulating layer, the second shell and the second insulating layer disclosed in the present application;

[0047] Figure 11 Structural schematic diagram of the connection between the first shell and the first insulating layer disclosed in the present application;

[0048] Figure 12 Structural schematic diagram of the connection between the second shell and the second insulating layer disclosed in the present application;

[0049] Figure 13 Exploded structural schematic diagram of the energy storage device disclosed in the present application.

[0050] Explanation of reference signs:

[0051] 100, circuit board assembly; 10, shell assembly; 101, containing space; 11, first shell; 110, second opening; 11a, third through hole; 111, first side wall; 111a, second threaded hole; 1111, first clamping groove; 1111a, first groove wall; 1111b, second groove wall; 1111c, limiting protrusion; 1111d, slot; 1111e, groove bottom wall; 112, third side wall; 1121, first bending part; 1121a, first threaded hole; 1121b, first notch; 113, inner bottom surface; 113a, connecting column;

[0052] 12, second shell; 120, first opening; 12a, first through hole; 12b, second notch; 121, second side wall; 1211, clamping part; 1211a, first part; 1211b, second part; 1212, second clamping groove; 1212a, third groove wall; 1212b, fourth groove wall; 122, fourth side wall; 122a, third notch; 1221, second bending part; 1221a, second through hole;

[0053] 20, circuit board; 201, power terminal; 202, third threaded hole;

[0054] 30, first insulating layer; 30a, first side edge; 30b, second side edge; 30c, third side edge; 40, second insulating layer; 40a, fourth side edge; 40b, fifth side edge;

[0055] 200, energy storage device; 210, energy storage shell; 220, battery assembly;

[0056] Z, first direction; Y, second direction; X, third direction. DETAILED DESCRIPTION

[0057] With reference to the drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0058] In the present application, the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used for better description of the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0059] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0060] In addition, the terms "mount", "set", "provided with", "connected" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific situation.

[0061] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0062] The technical solutions of the present application will be further described below in combination with the embodiments and drawings.

[0063] Please refer to Figure 1 and Figure 2The application discloses a circuit board assembly 100 which can have a first direction Z, a second direction Y and a third direction X perpendicular to each other, the circuit board assembly 100 comprises a housing assembly 10 and a circuit board 20, the housing assembly 10 comprises a first housing 11 and a second housing 12 which are separately arranged along the first direction Z, the first housing 11 is connected with the second housing 12, and a containing space 101 is formed between the first housing 11 and the second housing 12, and the circuit board 20 is arranged in the containing space 101.

[0064] Referring to Figure 3 and Figure 4 The first housing 11 can comprise two first side walls 111 which are oppositely arranged along the second direction Y, each of the first side walls 111 is provided with a first clamping groove 1111 which penetrates along the second direction Y, the first clamping groove 1111 has a first groove wall 1111a and a second groove wall 1111b which are oppositely arranged along the third direction X, the first groove wall 1111a is provided with a limiting protrusion 1111c which extends along a direction close to the second groove wall 1111b, the limiting protrusion 1111c is spaced apart from the second groove wall 1111b to form a slot 1111d, and the limiting protrusion 1111c is spaced apart from a groove bottom wall 1111e of the first clamping groove 1111 along the first direction Z, the second housing 12 comprises two second side walls 121 which are oppositely arranged along the second direction Y, the two first side walls 111 are located between the two second side walls 121, each of the second side walls 121 is provided with a clamping part 1211 which is located inside the second housing 12, the clamping part 1211 is inserted into the first clamping groove 1111 from the slot 1111d, and the clamping part 1211 is clamped and connected with the limiting protrusion 1111c.

[0065] The circuit board assembly 100 of the present application is provided with the first clamping groove 1111 on the first side wall 111 of the first shell 11, and the limiting protrusion 1111c is arranged on the first groove wall 1111a of the first clamping groove 1111, so that the limiting protrusion 1111c and the second groove wall 1111b are arranged at intervals to form the notch 1111d. When the second shell 12 is assembled on the first shell 11, the clamping part 1211 on the second side wall 121 of the second shell 12 can be inserted into the first clamping groove 1111 from the notch 1111d, and the second shell 12 can be pushed to move the clamping part 1211 in the third direction X until the clamping part 1211 is clamped and connected between the limiting protrusion 1111c and the groove bottom wall 1111e of the first clamping groove 1111, so that the limiting protrusion 1111c can limit the second shell 12 from being separated from the first shell 11 in the first direction Z. In this way, during the installation of the first shell 11 and the second shell 12, each clamping part 1211 on the two second side walls 121 can be correspondingly arranged in the notch 1111d of the first clamping groove 1111 on the first side wall 111. After the clamping part 1211 enters the first clamping groove 1111, pushing the second shell 12 in the third direction X can simultaneously realize the connection of each clamping part 1211. Therefore, the installation process of the shell assembly 10 can be simplified, and the assembly efficiency of the shell assembly 10 can be improved.

[0066] It should be noted that the circuit board 20 arranged in the accommodation space 101 of the shell assembly 10 can be provided with an inverter and a device with high heat dissipation. In order to reasonably utilize the internal space of the shell assembly 10, the space layout of each component is relatively compact, therefore, the circuit board assembly 100 usually involves heat dissipation problems. In the related art, heat dissipation can be achieved by additionally arranging a fan or a radiator. In the embodiment of the present application, in addition to the above-mentioned manner, the first shell 11 can further be provided with a connecting column 113a extending in the first direction Z on the inner bottom surface 113 in the first direction Z. One end of the connecting column 113a away from the inner bottom surface 113 is connected with the circuit board 20, so that the circuit board 20 has a gap with the inner bottom surface 113. In this way, the gap between the circuit board 20 and the inner bottom surface 113 of the first shell 11 can be utilized to facilitate heat dissipation of the circuit board 20, and meanwhile, the circuit board 20 can avoid large-area contact with the inner bottom surface 113 of the first shell 11, so that the risk of short circuit of the circuit can be reduced.

[0067] In order to improve the firmness of the clamping part 1211 clamped and connected in the first clamping groove 1111, in some possible embodiments, referring to Figures 4 to 7The clamping portion 1211 can include an angled first portion 1211a and a second portion 1211b, the first portion 1211a protrudes from the second side wall 121 and extends into the second shell 12, and the second portion 1211b extends along the third direction X, the first portion 1211a is clamped between the limiting protrusion 1111c and the groove bottom wall 1111e, and the second portion 1211b is located inside the first shell 11 and is clamped to the first side wall 111. By setting the clamping portion 1211 as two parts, the first portion 1211a is clamped between the limiting protrusion 1111c and the groove bottom wall 1111e to limit the position of the second shell 12 in the first direction Z, and the second portion 1211b is clamped to the first side wall 111 to limit the position of the second shell 12 in the second direction Y, thereby improving the clamping connection between the clamping portion 1211 and the first clamping groove 1111, thereby improving the stability of the connection between the second shell 12 and the first shell 11.

[0068] It can be understood that the first portion 1211a can extend along the second direction Y towards the inside of the second shell 12, and the second portion 1211b extends along the third direction X from the connection with the first portion 1211a. Figure 5 and Figure 6 It can be seen that the connection form of the clamping portion 1211 and the first clamping groove 1111, when the second shell 12 and the first shell 11 are assembled, the first portion 1211a is located between the limiting protrusion 1111c and the groove bottom wall 1111e of the first clamping groove 1111, at this time, the first portion 1211a can abut against the limiting protrusion 1111c in the first direction Z, and can also abut against the first groove wall 1111a in the third direction X, and the second portion 1211b can abut against the inner surface of the first side wall 111, so that the reliability of the connection between the clamping portion 1211 and the first clamping groove 1111 can be improved.

[0069] Since the two second side walls 121 of the second shell 12 are wrapped outside the two first side walls 111, the clamping portion 1211 is arranged on the second side wall 121 and located inside the second shell 12, in order to accurately align the first portion 1211a of the clamping portion 1211 into the slot 1111d, in some possible embodiments, each second side wall 121 is provided with a second clamping groove 1212 penetrating in the second direction Y, the second clamping groove 1212 has a third groove wall 1212a and a fourth groove wall 1212b oppositely arranged in the third direction X, the first portion 1211a is protruded from the third groove wall 1212a, and the second portion 1211b extends along the third direction X towards the fourth groove wall 1212b.

[0070] By forming the second clamping groove 1212 on the second side wall 121, and setting the clamping portion 1211 on the third groove wall 1212a of the second clamping groove 1212, the setting position of the clamping portion 1211 can be visualized, and when the second shell 12 is assembled to the first shell 11, the assembly position of the clamping portion 1211 can be determined through the second clamping groove 1212, so that the clamping portion 1211 can be accurately positioned to the notch 1111d, and then clamped and connected to the second clamping groove 1212, thereby reducing assembly errors and improving assembly efficiency.

[0071] It can be understood that after the second shell 12 and the first shell 11 are assembled, the first groove wall 1111a and the third groove wall 1212a provided with the limiting protrusion 1111c are oppositely arranged in the second direction Y.

[0072] In some possible embodiments, the shell assembly 10 has a cuboid structure, the first direction Z is the height direction of the shell assembly 10, the second direction Y is the width direction of the shell assembly 10, and the third direction X is the length direction of the shell assembly 10.

[0073] Each first side wall 111 is provided with a plurality of first clamping grooves 1111 arranged at intervals along the third direction X, each second side wall 121 is provided with a plurality of clamping portions 1211 arranged at intervals along the third direction X, and the plurality of clamping portions 1211 are one-to-one correspondingly inserted into the plurality of first clamping grooves 1111. By setting a plurality of first clamping grooves 1111 on each first side wall 111, a plurality of clamping portions 1211 on each second side wall 121, and one-to-one corresponding insertion of the plurality of clamping portions 1211 into the plurality of first clamping grooves 1111, the firmness of the connection between the first shell 11 and the second shell 12 can be improved, and the plurality of clamping portions 1211 can be simultaneously aligned to the first clamping grooves 1111. After alignment, pushing the second shell 12 can simultaneously realize the connection of a plurality of positions, one step, simplify the assembly process, and improve the assembly efficiency.

[0074] Of course, in other embodiments, the shell assembly 10 can have a square or other irregular structure, as long as the first direction Z, the second direction Y and the third direction X are perpendicular to each other.

[0075] In order to realize the sealing property of the shell assembly 10 and further improve the stability of the connection between the first shell 11 and the second shell 12, it is continued to be understood that Figure 3Optionally, the first shell 11 can further comprise a third side wall 112 arranged in the third direction X, the third side wall 112 being connected between the two first side walls 111, the third side wall 112 being provided with a first bent portion 1121 bent towards the inside of the shell assembly 10, the first bent portion 1121 being provided with a first threaded hole 1121a penetrating in the first direction Z, and the second shell 12 being provided with a first through hole 12a penetrating in the first direction Z. The circuit board assembly 100 further comprises a first fastener (not shown) penetrating through the first through hole 12a and being screwed to the first threaded hole 1121a. The first threaded hole 1121a is arranged by extending the first bent portion 1121 on the third side wall 112, and the first through hole 12a is arranged on the second shell 12, so that the first fastener is arranged to penetrate through the first through hole 12a and the first threaded hole 1121a, thereby achieving the screwing of the first shell 11 and the second shell 12. On the basis of the connection of the first shell 11 and the second shell 12 through the cooperation of the clamping portion 1211 and the first clamping groove 1111, the firmness of the connection of the two shells can be further improved.

[0076] It can be understood that the first fastener penetrates through the first through hole 12a and the first threaded hole 1121a in the first direction Z in sequence, thereby achieving the effective constraint of the first shell 11 and the second shell 12 in the second direction Y and the second direction Y.

[0077] Optionally, the first fastener can be, but is not limited to, a bolt, a screw, a screw, etc., as long as it can achieve the effective fixing of the first shell 11 and the second shell 12, and the specific form is not limited in the embodiments of the present application.

[0078] Continuing to refer to Figure 3 and Figure 4 In some possible embodiments, the first bent portion 1121 can be provided with a first notch 1121b, and the second shell 12 is provided with a second notch 12b, the second notch 12b being communicated with the first notch 1121b, and the first notch 1121b and the second notch 12b being used for the penetration of the wires electrically connected with the circuit board 20. That is, when the second shell 12 is assembled with the first shell 11, the second shell 12 is arranged in the first direction Z in a stacked manner with the first bent portion 1121, so that the first notch 1121b and the second notch 12b are communicated and communicated with the accommodation space 101 of the shell assembly 10, so that the first notch 1121b and the second notch 12b can be used together for the penetration of the wires electrically connected with the circuit board 20, so as to facilitate the arrangement and fixing of the wires.

[0079] Optionally, the first notches 1121b arranged on the first bending part 1121 can be one, two, three, etc., and each first notch 1121b is arranged at intervals. Correspondingly, the second notches 12b on the second shell 12 can be arranged one by one corresponding to the first notches 1121b. Correspondingly, the number of first threaded holes 1121a can also be multiple, and each first threaded hole 1121a can be arranged on the first bending part 1121 between two adjacent first notches 1121b, so that the positions where the first fasteners are arranged are more uniform.

[0080] In some possible implementation manners, the second shell 12 is provided with a fourth side wall 122 at one end in the third direction X, the fourth side wall 122 is connected between the two second side walls 121, and the other end of the second shell 12 in the third direction X is formed with the first opening 120 between the two second side walls 121. The fourth side wall 122 abuts against the outer surface of the first shell 11.

[0081] It can be understood that, in order to enable the clamping part 1211 of the second shell 12 to be clamped in the first clamping groove 1111, the other end of the second shell 12 in the third direction X is formed with the first opening 120 between the two second side walls 121. Since the second shell 12 and the first shell 11 are staggered in the third direction X when the clamping part 1211 is inserted into the slot 1111d, by forming the first opening 120 at one end of the second shell 12 in the third direction X, the clamping part 1211 on the second shell 12 can be first aligned and inserted into the slot 1111d, and then the clamping part 1211 is allowed to move in the third direction X in the first clamping groove 1111 to abut against the limiting protrusion 1111c, that is, the second shell 12 can be pushed to move in the third direction X. At this time, the clamping part 1211 moves together with the second shell 12, until the first part 1211a of the clamping part 1211 moves between the limiting protrusion 1111c and the first clamping groove 1111, and the first part 1211a can abut against the limiting protrusion 1111c in the first direction Z, the first part 1211a can abut against the first groove wall 1111a in the third direction X, and the second part 1211b abuts against the inner surface of the first side wall 111.

[0082] In addition, by arranging the fourth side wall 122, abutting against the first shell 11 cannot continue to be pushed, which can ensure that the clamping part 1211 of the second shell 12 is clamped in place in the first clamping groove 1111, and the end of the second shell 12 is aligned with the end of the first shell, thereby ensuring the assembly precision between the second shell 12 and the first shell 11, and achieving effective connection between the second shell 12 and the first shell 11.

[0083] Since one end of the shell assembly 10 in the third direction X is closed by the third side wall 112 of the first shell 11, in order to make the electrical connection of the circuit board 20, see Figure 8 In some possible implementation manners, the circuit board 20 is provided with an electrical connection terminal 201, the first shell 11 is provided with a second opening 110 at one end of the fourth side wall 122, the fourth side wall 122 is provided with a third gap 122a to expose the electrical connection terminal 201, the fourth side wall 122 is provided with a second bending part 1221 on both sides along the second direction Y, the two first side walls 111 are located between the second bending parts 1221, each second bending part 1221 is provided with a second through hole 1221a penetrating along the second direction Y, and each first side wall 111 is provided with a second threaded hole 111a penetrating along the second direction Y. The circuit board assembly 100 further includes a second fastener (not shown) which penetrates through the second through hole 1221a and is screwed to the second threaded hole 111a.

[0084] Exemplarily, the second fastener is sequentially penetrated into the second through hole 1221a and the second threaded hole 111a along the second direction Y, and effective constraint of the first shell 11 and the second shell 12 in the first direction Z and the third direction X can be achieved.

[0085] It can be understood that the fourth side wall 122 does not completely close the second opening 110. By providing the second opening 110 formed between the two first side walls 111 at one end of the fourth side wall 122 of the first shell 11, the fourth side wall 122 is provided with the third gap 122a to expose the electrical connection terminal 201, thereby the electrical connection of the circuit board 20 can be achieved. In addition, by providing the second bending part 1221 on both sides of the fourth side wall 122 along the second direction Y to cover the outside of the first side wall 111, and providing the second through hole 1221a on the second bending part 1221 and the second threaded hole 111a on the first side wall 111, and connecting the second through hole 1221a and the second threaded hole 111a by the second fastener, the connection of the second shell 12 and the first shell 11 is further achieved, and on the basis of the connection of the first shell 11 and the second shell 12 by the cooperation of the clamping part 1211 and the first clamping groove 1111 and by the first fastener, the reliability of the connection of the first shell 11 and the second shell 12 can be further improved.

[0086] Alternatively, the second fastener can be, but is not limited to, a bolt, a screw, a screw, and the like, as long as it can achieve effective fixation between the first shell 11 and the second shell 12, and the specific form is not limited in the embodiments of the present application.

[0087] It can be understood that the third gap 122a on the fourth side wall 122 can be in communication with the second opening 110, so that the electrical terminal 201 can extend at least partially into the third gap 122a, so that the electrical terminal 201 can have sufficient installation space, and so that the fourth side wall 122 has sufficient extension length to achieve the closure of the shell assembly 10.

[0088] Optionally, the first shell 11 is provided with a third through hole 11a, as shown in Figure 9 The circuit board 20 is provided with a third threaded hole 202, and the circuit board assembly 100 further comprises a third fastener (not shown), which passes through the third through hole 11a and is screwed to the third threaded hole 202. On the basis that the circuit board 20 is spaced apart from the first shell 11 under the action of the connecting column, the third fastener is used to pass through the third through hole 11a and the third threaded hole 202 to connect, so as to achieve the fixation of the circuit board 20. The third fastener can be, but is not limited to, a bolt, a screw, a screw, etc., as long as it can satisfy the effective fixation between the first shell 11 and the second shell 12, and the specific form is not limited in the embodiment.

[0089] Optionally, the number of third threaded holes 202 can be multiple, for example, three, four, five, etc., as long as it can satisfy the stable connection of the circuit board 20, and the specific number is not limited in the embodiment.

[0090] It can be understood that the split shell assembly 10 provided by the application can include two connection modes, which are the clamping connection and the fastener connection, to realize the connection of the first shell 11 and the second shell 12. Specifically, on both sides of the shell assembly 10 along the second direction Y (the width direction), the clamping part 1211 is inserted into the first clamping groove 1111, and the limiting protrusion 1111c is used for limiting, and on both ends of the shell assembly 10 along the third direction Y (the length direction), the fastener is used to fix the first shell 11 and the second shell 12. Thus, by means of the two ways of clamping connection and locking connection, compared with the way that the fastener is used to lock and connect between the first shell 11 and the second shell 12, the number of fasteners can be reduced, so as to simplify the installation process of the first shell 11 and the second shell 12, and thus the assembly efficiency of the shell assembly 10 is improved.

[0091] Since the first shell 11 and the second shell 12 of the circuit board assembly 100 are usually made of metal, in order to avoid internal short circuit, in some possible embodiments, as shown in Figures 9 to 12The inner surface of the first shell 11 is provided with a first insulating layer 30, and / or the inner surface of the second shell 12 is provided with a second insulating layer 40. By providing the insulating layer on the inner surface of the first shell 11 and / or the second shell 12, the circuit board 20 and the shell assembly 10 can be electrostatically isolated to avoid internal short circuit.

[0092] Preferably, the inner surfaces of the first shell 11 and the second shell 12 are respectively provided with the first insulating layer 30 and the second insulating layer 40, so that the shell assembly 10 has better insulation effect.

[0093] Optionally, referring to Figure 10 and Figure 11 The first insulating layer 30 has a first side edge 30a, a second side edge 30b and a third side edge 30c. The first insulating layer 30 can be provided only on the inner bottom surface 113 of the first shell 11 (facing the bottom surface of the second shell 12 in the first direction Z), the first side edge 30a can be located at the edge of the first insulating layer 30 in the third direction X and connected to the third side wall 112; the second side edge 30b can be located at the edge of the first insulating layer 30 in the second direction Y and connected to the first side edge 30a, and the second side edge 30b can be attached to the first side wall 111; the third side edge 30c can be located at the edge of the first insulating layer 30 opposite to the first side edge 30a and bent towards the outside of the first shell 11, and the third side edge 30c can be parallel to the inner bottom surface 113 of the first shell 11 and cover the outer surface of the first shell 11 opposite to the inner bottom surface 113, that is, the first insulating layer 30 located on the inner bottom surface 113 of the first shell 11 can extend to the outer surface. Since one end of the third side edge 30c will have a wire passing out and connected to the outside, such arrangement can make the insulation effect better and be more conducive to improving the insulation performance of the shell assembly 10.

[0094] It can be understood that the first side wall 111 of the first shell 11 can be provided with a heat dissipation opening, and the first insulating layer 30 provided on the first side wall 111 needs to avoid the heat dissipation opening.

[0095] Of course, in some other embodiments, the first insulating layer 30 can also have other structures, for example, the first insulating layer 30 located on the first side wall 111 extends from the inner side to the outer side, which can be adjusted according to actual conditions and is not specifically limited in the embodiments of the present application.

[0096] Optionally, referring to Figure 10 and Figure 12The second insulating layer 40 has a fourth side edge 40a and a fifth side edge 40b. The fourth side edge 40a is located at the edge of the second insulating layer 40 in the third direction X. The fifth side edge 40b is connected to the fourth side edge 40a and extends away from the first shell 11 in the third direction X from the connection to form a gap (not shown) with the fourth side edge 40a. The second insulating layer 40 is arranged on the inner bottom surface 113 (the bottom surface facing the first shell 11 in the first direction Z) of the second shell 12. The fourth side edge 40a is located on the inner surface of the fourth side wall 122. The fifth side edge 40b is also located on the inner surface of the fourth side wall 122. That is, the second insulating layer 40 on the fourth side wall 122 extends from the inner side to the outer side, covering the fourth side wall 122.

[0097] It can be understood that the fourth side wall 122 is provided with a third gap 122a for the extension of the electrical terminal 201. Therefore, the second insulating layer 40 needs to avoid the third gap 122a when arranged.

[0098] Of course, in some other embodiments, the second insulating layer 40 can also have other structures. For example, the second insulating layer 40 can also extend to the second side wall 121. The specific arrangement can be adjusted according to actual conditions, which is not limited in the embodiments of the present application.

[0099] The first insulating layer 30 and the second insulating layer 40 are arranged as above. This can enable the circuit board 20 and the first shell 11 and the second shell 12 to be electrostatically isolated, and more effectively avoid internal short circuit. In addition, since the wiring terminal on the circuit board 20 is located at one end of the fourth side wall 122, the second insulating layer 40 can be further extended from the inner surface to the outer surface of the fourth side wall 122 to further avoid the end short circuit of the circuit board 20, thereby improving the insulation effect of the circuit board assembly 100.

[0100] Optionally, the above-mentioned insulating layer can be a polyester film, an insulating paint, a ceramic material, and a silicone rubber, etc. It can satisfy the electrical isolation between the circuit and the circuit board 20, and prevent short circuit or electric leakage caused by direct contact of current. The specific arrangement is not limited in the embodiments of the present application.

[0101] The present application also discloses a power storage device 200, which can include a power storage shell 210, a battery assembly 220, and the circuit board assembly 100 of the above-mentioned embodiments. Figure 13 The battery assembly 220 and the circuit board assembly 100 are arranged in the power storage shell 210. The circuit board assembly 100 is connected to the battery assembly 220.

[0102] It can be understood that the energy storage device 200 with the circuit board assembly 100 has all the technical effects of the circuit board assembly 100. Since the technical effects have been described in detail in the embodiment of the circuit board assembly 100, they will not be described here.

[0103] The circuit board assembly and the energy storage device disclosed in the embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above embodiment descriptions are only used to help understand the circuit board assembly and the energy storage device of the present application and the core idea thereof. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A circuit board assembly (100), characterized by The circuit board assembly (100) has a first direction (Z), a second direction (Y) and a third direction (X) perpendicular to each other, and comprises: a housing assembly (10) comprising a first housing (11) and a second housing (12) arranged separately along the first direction (Z), the first housing (11) being connected with the second housing (12) and forming a containing space (101) therebetween; and a circuit board (20) arranged in the containing space (101); wherein the first housing (11) comprises two first side walls (111) arranged oppositely along the second direction (Y), each of the first side walls (111) is provided with a first clamping groove (1111) extending through along the second direction (Y), the first clamping groove (1111) has a first groove wall (1111a) and a second groove wall (1111b) arranged oppositely along the third direction (X), the first groove wall (1111a) is provided with a limiting protrusion (1111c) extending along a direction close to the second groove wall (1111b), the limiting protrusion (1111c) and the second groove wall (1111b) are arranged to form a slot (1111d), and the limiting protrusion (1111c) and a groove bottom wall (1111e) of the first clamping groove (1111) in the first direction (Z) are arranged to be spaced apart, the second housing (12) comprises two second side walls (121) arranged oppositely along the second direction (Y), each of the second side walls (121) is provided with a clamping portion (1211) extending to the inside of the second housing (12), one of the clamping portions (1211) is inserted into the first clamping groove (1111) from one of the slots (1111d), and one of the clamping portions (1211) is connected with one of the limiting protrusions (1111c) in clamping.

2. The circuit board assembly (100) of claim 1, wherein, The clamping portion (1211) comprises a first part (1211a) and a second part (1211b) connected at an angle, the first part (1211a) is protruded on the second side wall (121) and extends to the inside of the second housing (12), the second part (1211b) extends along the third direction (X), the first part (1211a) is connected in clamping between the limiting protrusion (1111c) and the groove bottom wall (1111e), and the second part (1211b) is located in the first housing (11) and is connected in clamping with the first side wall (111).

3. The circuit board assembly (100) of claim 2, wherein, Each of the second side walls (121) is provided with a second clamping groove (1212) penetrating in the second direction (Y), the second clamping groove (1212) has a third groove wall (1212a) and a fourth groove wall (1212b) oppositely arranged in the third direction (X), the first part (1211a) is protruded on the third groove wall (1212a), and the second part (1211b) extends in the third direction (X) towards the fourth groove wall (1212b).

4. The circuit board assembly (100) of claim 1, wherein, The shell assembly (10) has a cuboid structure, the first direction (Z) is a height direction of the shell assembly (10), the second direction (Y) is a width direction of the shell assembly (10), and the third direction (X) is a length direction of the shell assembly (10). Each of the first side walls (111) is provided with a plurality of first clamping grooves (1111) arranged at intervals in the third direction (X), each of the second side walls (121) is provided with a plurality of clamping parts (1211) arranged at intervals in the third direction (X), and the plurality of clamping parts (1211) and the plurality of first clamping grooves (1111) are one-to-one correspondingly inserted.

5. The circuit board assembly (100) of claim 1, wherein, The first shell (11) further comprises a third side wall (112) arranged in the third direction (X), the third side wall (112) is connected between two first side walls (111), the third side wall (112) is provided with a first bending part (1121) bent towards the inside of the shell assembly (10), the first bending part (1121) is provided with a first threaded hole (1121a) penetrating in the first direction (Z), and the second shell (12) is provided with a first through hole (12a) penetrating in the first direction (Z). The circuit board assembly (100) further comprises a first fastener, the first fastener passes through the first through hole (12a) and is screwed into the first threaded hole (1121a).

6. The circuit board assembly (100) of claim 5, wherein, The first bending part (1121) is provided with a first notch (1121b), the second shell (12) is provided with a second notch (12b), the second notch (12b) is communicated with the first notch (1121b), and the first notch (1121b) and the second notch (12b) are used for penetrating a wire electrically connected with the circuit board (20).

7. The circuit board assembly (100) of claim 1, characterized in that One end of the second shell (12) in the third direction (X) is provided with a fourth side wall (122), the fourth side wall (122) is connected between two second side walls (121), and the fourth side wall (122) abuts against the outer surface of the first shell (11).

8. The circuit board assembly (100) of claim 7, characterized in that The circuit board (20) is provided with an electric terminal (201), the fourth side wall (122) is provided with a third gap (122a) to expose the electric terminal (201), the fourth side wall (122) is provided with a second bending part (1221) on both sides along the second direction (Y), the first side wall (111) is located between the second bending part (1221), the second bending part (1221) is provided with a second through hole (1221a) along the second direction (Y), and the first side wall (111) is provided with a second threaded hole (111a) along the second direction (Y); The circuit board assembly (100) further comprises a second fastener, the second fastener passes through the second through hole (1221a) and is screwed into the second threaded hole (111a).

9. The circuit board assembly (100) according to any one of claims 1 to 8, characterized in that The inner bottom surface (113) of the first shell (11) in the first direction (Z) is provided with a connecting column (113a) extending along the first direction (Z), one end of the connecting column (113a) away from the inner bottom surface (113) is connected with the circuit board (20), so that the circuit board (20) has a spacing with the inner bottom surface (113).

10. The circuit board assembly (100) according to any one of claims 1 to 8, characterized in that The first shell (11) is provided with a third through hole (11a), the circuit board (20) is provided with a third threaded hole (202), and the circuit board assembly (100) further comprises a third fastener, the third fastener passes through the third through hole (11a) and is screwed into the third threaded hole (202).

11. The circuit board assembly (100) according to any of claims 1-8, characterized in that The inner surface of the first shell (11) is provided with a first insulation layer (30), and / or the inner surface of the second shell (12) is provided with a second insulation layer (40).

12. An energy storage device (200) characterized by, The circuit board assembly (100) comprises any one of claims 1-11. The circuit board assembly (100) comprises any one of claims 1-11.

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