Sealing structure, battery and electric device

Abstract

The invention provides a sealing structure, a battery and an electric device, and aims to improve the sealing effect between a connector and a shell. The sealing structure comprises a shell with a mounting through hole and a connector arranged in the mounting through hole in a penetrating mode. A first accommodating part and a second accommodating part which are arranged around the mounting through hole are respectively formed on two opposite sides of the shell; the sealing structure further comprises a first sealant structure and a second sealant structure which are arranged in the first containing part and the second containing part respectively, and the first sealant structure and the second sealant structure are used for sealing a gap between the shell and the connector. According to the sealing structure, the gap between the shell and the connector is sealed from the two opposite sides of the shell through the first sealant structure and the second sealant structure, so that double sealing of the gap between the shell and the connector is achieved, and the risk of sealing failure between the shell and the connector is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a sealing structure, a battery, and an electrical device. Background Art

[0002] The battery housing (e.g., a battery pack) is equipped with a connector to electrically connect to components within the housing (e.g., a battery management system) to enable current and / or signal transmission. However, corrosive media such as water vapor can easily enter the housing through the connection between the connector and the housing, thereby affecting the operation of the components. Summary of the Invention

[0003] Embodiments of the present application provide a sealing structure, a battery, and an electrical device to improve the sealing effect between a connector and a housing.

[0004] In a first aspect, an embodiment of the present application provides a sealing structure, comprising a shell having a mounting through hole and a connector inserted into the mounting through hole; a first receiving portion and a second receiving portion arranged around the mounting through hole are respectively formed on opposite sides of the shell; the sealing structure also comprises a first sealant structure and a first sealant structure respectively arranged in the first receiving portion and the second receiving portion, and the first sealant structure and the first sealant structure are used to seal the gap between the shell and the connector.

[0005] In one embodiment, the housing includes a body having a first surface and a second surface opposite to each other, and the mounting through hole passes through the body.

[0006] In one embodiment, the shell further includes a first retaining rib, which is arranged on the first surface around the mounting through hole and is spaced apart from the connector; the first housing portion is a recessed area defined by a portion of the body adjacent to the mounting through hole and the first retaining rib, the recessed area is close to the connector and forms a first receiving groove, and the first sealant structure is filled in the first receiving groove.

[0007] In one embodiment, the bottom wall surface of the first accommodating groove includes a first inclined surface, which is arranged to be close to the connector. In a first direction, the first inclined surface extends obliquely in a direction away from the central axis of the mounting through hole, and the first direction is the direction from the second surface to the first surface.

[0008] In one embodiment, the included angle between the first inclined surface and the central axis of the mounting through hole is 45° to 75°.

[0009] In one embodiment, the width of the first accommodating groove is 4 mm to 5 mm; and / or the depth of the first accommodating groove is 5 mm to 6 mm.

[0010] In one embodiment, the shell further includes a second retaining rib and a third retaining rib, and along the direction approaching the mounting through hole, the second retaining rib and the third retaining rib sequentially surround the mounting through hole and are spaced apart on the second surface; the second receiving portion is a second receiving groove defined by the main body, the second retaining rib and the third retaining rib, and the second sealant structure is filled in the second receiving groove; part of the connector extends into the second receiving groove and contacts the second sealant structure.

[0011] In one embodiment, the connector includes a main body, a step portion and a protrusion, the main body is inserted into the mounting through hole, the step portion is protruded on the outer peripheral surface of the main body, the protrusion is protruded on the step surface of the step portion and is spaced opposite to the main body, and the protrusion extends into the second accommodating groove and is wrapped by the second sealant structure.

[0012] In one embodiment, the raised portion is a ring rib, the ring rib, the main body and the step portion define a third receiving groove, and the third retaining rib extends into the third receiving groove; the second sealant structure includes a first sub-portion and a second sub-portion, the first sub-portion is located in the second receiving groove and is clamped between the inner wall of the second receiving groove and the ring rib, and the second sub-portion is located in the third receiving groove and is clamped between the inner wall of the third receiving groove and the third retaining rib.

[0013] In one embodiment, based on the main body, the height of the second retaining rib is higher than the height of the third retaining rib.

[0014] In one embodiment, the step surface of the step portion abuts against the second retaining rib, or the step portion is located inside the second retaining rib and is loosely fitted with the second retaining rib.

[0015] In one embodiment, the inner surface of the third retaining rib is formed as the side wall surface of the mounting hole, and in a first direction, the inner surface of the third retaining rib extends obliquely toward the direction close to the central axis of the mounting hole, and the first direction is the direction from the second surface to the first surface.

[0016] In one embodiment, the included angle between the inner surface of the third retaining rib and the central axis of the mounting through hole is 45° to 75°.

[0017] In one embodiment, the width of the second receiving groove is 4 mm to 5 mm; and / or the depth of the second receiving groove is 5 mm to 6 mm.

[0018] In one embodiment, the sealing structure further includes a first connecting structure provided on the housing and a second connecting structure provided on the connector, wherein the first connecting structure is connected to the second connecting structure.

[0019] In one embodiment, the first connecting structure is engaged with the second connecting structure.

[0020] In one embodiment, the first connection structure is located on a side of the housing where the second receiving portion is formed.

[0021] In one embodiment, the connector includes a main body portion connected to the housing, and the connector further includes a wiring terminal disposed on the main body portion.

[0022] In one embodiment, the connector is a communication connector.

[0023] In one embodiment, the first sealant structure is a glue layer formed by solidifying glue in the first receiving portion; and / or the second sealant structure is a glue layer formed by solidifying glue in the second receiving portion.

[0024] In the second aspect, an embodiment of the present application provides a battery, including a battery management system module, a battery cell module and a storage box, wherein the battery management system module and the battery cell module are arranged in the storage box, and the storage box includes the sealing structure as described above, and the battery management system module is electrically connected to the battery cell module and the connector.

[0025] In one embodiment, the storage box includes a box body and a cover body provided on the box body, and the shell is the cover body.

[0026] In one embodiment, the battery further includes an integrated busbar, the battery management system module is connected to the cell module via the integrated busbar, and the integrated busbar and the battery management system module are disposed on the cover.

[0027] In one embodiment, the battery is a battery pack.

[0028] In one embodiment, the battery pack is a low-voltage battery pack, and the output voltage of the low-voltage battery pack is less than or equal to 48V.

[0029] In one embodiment, the low-voltage battery pack is a starting battery pack.

[0030] In a third aspect, an embodiment of the present application provides an electrical device comprising the battery as described above.

[0031] Beneficial effects of the embodiments of the present application:

[0032] The sealing structure provided in the embodiment of the present application utilizes a first sealant structure and a second sealant structure to seal the gap between the assembled shell and the connector. Furthermore, the first sealant structure and the second sealant structure are respectively arranged on the first receiving portion and the second receiving portion on opposite sides of the shell. In this way, the first sealant structure and the second sealant structure can respectively seal the gap between the shell and the connector from opposite sides of the shell, thereby achieving double sealing of the gap between the shell and the connector and reducing the risk of sealing failure between the shell and the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 is a three-dimensional schematic diagram of a sealing structure provided in an embodiment of the present application at one viewing angle;

[0035] Figure 2 is a three-dimensional schematic diagram of the sealing structure provided by an embodiment of the present application from another perspective;

[0036] Figure 3 is a schematic top view of the sealing structure provided in an embodiment of the present application;

[0037] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0038] Figure 5 yes Figure 4 Enlarged view of the middle C section;

[0039] Figure 6 yes Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0040] Figure 7 yes Figure 6 Enlargement of the middle D part Figure 1 ;

[0041] Figure 8 yes Figure 6 Enlargement of the middle D part Figure 2 , the first sealant structure and the second sealant structure are omitted in the figure;

[0042] Figure 9 is a three-dimensional schematic diagram of a housing in a sealing structure provided by an embodiment of the present application at one viewing angle;

[0043] Figure 10 is a three-dimensional schematic diagram of the housing in the sealing structure provided by an embodiment of the present application from another perspective;

[0044] Figure 11 is a three-dimensional schematic diagram of a connector in a sealing structure provided by an embodiment of the present application at one viewing angle;

[0045] Figure 12 is a three-dimensional schematic diagram of a connector in a sealing structure provided by an embodiment of the present application from another perspective;

[0046] Figure 13 is a three-dimensional schematic diagram of a connector in a sealing structure provided in an embodiment of the present application from another perspective;

[0047] Figure 14 is a cross-sectional view of a battery provided in an embodiment of the present application;

[0048] Figure 15 It is a structural diagram of an electrical device provided in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 100. Sealing structure;

[0051] 110, housing; 111, body; 1111, first surface; 1112, second surface; 112, first retaining rib; 113, second retaining rib; 114, third retaining rib;

[0052] 1101, mounting through hole; 1102, first receiving groove; 1103, second receiving groove; 1104, first inclined surface;

[0053] 120, connector; 121, main body; 122, stepped portion; 1221, stepped surface; 123, raised portion; 124, third receiving groove; 125, connection terminal;

[0054] 130. First sealant structure;

[0055] 140. Second sealant structure; 141. First sub-unit; 142. Second sub-unit;

[0056] 150. First connection structure;

[0057] 160. Second connection structure;

[0058] 200, battery;

[0059] 210. Battery management system module;

[0060] 220, battery cell module;

[0061] 230, receiving box; 231, box body; 232, cover body;

[0062] 240, integrated busbar;

[0063] 300. Electrical equipment. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0065] Furthermore, it should be understood that the specific embodiments described herein are intended only to illustrate and explain the present application and are not intended to limit the present application. In this application, unless otherwise indicated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the directions of the drawings in the accompanying drawings; whereas "inner" and "outer" refer to the outline of the device.

[0066] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the specified features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0067] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0068] The terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0069] In the description of the embodiments of this application, words such as "example" or "for example" are used to indicate an example, illustration, or description. Any embodiment or design described as "for example" or "for example" in the embodiments of this application is not to be construed as being preferred or having more advantages than another embodiment or design. The use of words such as "example" or "for example" is intended to clearly present relative concepts.

[0070] To facilitate understanding of the solution of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.

[0071] First, see Figures 1 to 13 The present invention provides a sealing structure 100 in an embodiment. The sealing structure 100 includes a housing 110 having a mounting hole 1101 and a connector 120 disposed within the mounting hole 1101. A first receiving portion and a second receiving portion are formed on opposite sides of the housing 110, surrounding the mounting hole 1101. The sealing structure 100 also includes a first sealant structure 130 and a second sealant structure 140, respectively disposed within the first and second receiving portions. The first sealant structure 130 and the second sealant structure 140 are used to seal the gap between the housing 110 and the connector 120.

[0072] Specifically, the sealing structure 100 includes a housing 110 and a connector 120. The housing 110 has a mounting through-hole 1101, and the connector 120 is disposed in the mounting through-hole 1101. That is, the connector 120 is mounted on the housing 110 through the mounting through-hole 1101. It should be noted that the connector 120 and the wall of the mounting through-hole 1101 can have a clearance fit or an interference fit.

[0073] The housing 110 can have different structures. For example, if the sealing structure 100 is applied to a battery 200, the housing 110 can be the box 231 of the battery 200 or the cover 232 of the battery 200. Of course, in other application scenarios, the housing 110 can also have other structures, which are not limited here.

[0074] The connector 120 refers to a device for transmitting current and / or signals. As an example, the connector 120 is a communication connector.

[0075] The housing 110 is formed with a first receiving portion and a second receiving portion, which are formed on opposite sides of the housing 110. For example, if the housing 110 has an inner side and an outer side, and one of the first receiving portion and the second receiving portion is formed on the inner side, then the other of the first receiving portion and the second receiving portion is formed on the outer side, the housing 110 has a mounting hole 1101, with the first receiving portion being arranged to surround the mounting hole 1101, and the second receiving portion also being arranged to surround the mounting hole 1101.

[0076] The sealing structure 100 also includes a first sealant structure 130 and a second sealant structure 140, wherein the first sealant structure 130 is arranged in a first receiving portion, and the second sealant structure 140 is arranged in a second receiving portion. That is to say, the first receiving portion is used to receive the first sealant structure 130, and the first receiving portion can be a sink or a receiving groove; the second receiving portion is used to receive the second sealant structure 140, and the second receiving portion can be a sink or a receiving groove. Since the first receiving portion and the second receiving portion are respectively formed on opposite sides of the shell 110, the first sealant structure 130 and the second sealant structure 140 are also respectively located on opposite sides of the shell 110. In this way, the first sealant structure 130 can seal the gap between the shell 110 and the connector 120 from one side of the shell 110, and the second sealant structure 140 can seal the gap between the shell 110 and the connector 120 from the other side of the shell 110.

[0077] The sealing structure 100 provided in the embodiment of the present application utilizes a first sealant structure 130 and a second sealant structure 140 to seal the gap between the assembled shell 110 and the connector 120. Furthermore, the first sealant structure 130 and the second sealant structure 140 are respectively arranged on the first receiving portion and the second receiving portion on opposite sides of the shell 110. In this way, the first sealant structure 130 and the second sealant structure 140 can respectively seal the gap between the shell 110 and the connector 120 from opposite sides of the shell 110, thereby achieving double sealing of the gap between the shell 110 and the connector 120 and reducing the risk of sealing failure between the shell 110 and the connector 120.

[0078] In some embodiments, the first sealant structure 130 is a glue layer formed by curing glue within the first receiving portion. The glue is liquid and can flow to conform to the internal shape of the first receiving portion. After the liquid glue cures, it forms a glue layer that not only bonds the housing 110 and connector 120 together but also covers the junction between the housing 110 and connector 120, thereby better sealing the gap between the housing 110 and connector 120. The type of glue is not limited here and can be structural glue, sealant, or potting compound.

[0079] In some embodiments, the second sealant structure 140 is a glue layer formed by curing glue in the second receiving portion. The glue is liquid and can flow to conform to the internal shape of the second receiving portion. After the liquid glue cures, it forms a glue layer that not only bonds the housing 110 and connector 120 together but also covers the junction between the housing 110 and connector 120, thereby better sealing the gap between the housing 110 and connector 120. The type of glue is not limited here and can be structural glue, sealant, or potting compound.

[0080] In some embodiments, see Figure 9 and Figure 10 The shell 110 includes a main body 111, and the main body 111 has a first surface 1111 and a second surface 1112 opposite to each other, and the mounting through hole 1101 passes through the main body 111. The main body 111 can have different shapes, such as a flat plate or a cap. Along the thickness direction of the main body 111, the main body 111 has two opposite side surfaces, namely the first surface 1111 and the second surface 1112. One of the first surface 1111 and the second surface 1112 can be used as the inner surface, and the other as the outer surface. The mounting through hole 1101 passes through the main body 111, specifically, the mounting through hole 1101 extends from the first surface 1111 to the second surface 1112 along the thickness direction of the main body 111.

[0081] In some embodiments, see Figures 3 to 10 The shell 110 also includes a first retaining rib 112, which is arranged on the first surface 1111 around the mounting hole 1101 and is spaced apart from the connector 120; the first receiving portion is a sinking area defined by the portion of the body 111 adjacent to the mounting hole 1101 and the first retaining rib 112, the sinking area is close to the connector 120 and constructs a first receiving groove 1102, and the first sealant structure 130 is filled in the first receiving groove 1102.

[0082] The housing 110 further includes a first retaining rib 112 disposed on a first surface 1111 of the body 111. The first retaining rib 112 surrounds the mounting hole 1101, that is, the first retaining rib 112 is an annular convex rib disposed around the mounting hole 1101. The first retaining rib 112 is spaced apart from the connector 120, that is, there is a gap between the first retaining rib 112 and the connector 120.

[0083] The first accommodating portion is a sinking area, which is defined by the portion of the main body 111 adjacent to the mounting hole 1101 and the first retaining rib 112, wherein the portion of the main body 111 adjacent to the mounting hole 1101 forms the bottom wall of the sinking area, the first retaining rib 112 forms a side wall of the sinking area, and the other positions of the sinking area are open.

[0084] The sinking area is close to the connector 120, and the connector 120 is formed as the other side wall of the sinking area, so that the sinking area is further constructed into a first receiving groove 1102. It can be understood that the portion of the main body 111 adjacent to the mounting through hole 1101, the first retaining rib 112 and the connector 120 form the groove wall of the first receiving groove 1102. The notch of the first receiving groove 1102 is opposite to the main body 111, and the opening of the first receiving groove 1102 faces away from the first surface 1111. Since the first retaining rib 112 is an annular convex rib, the first receiving groove 1102 is also an annular groove surrounding the mounting through hole 1101.

[0085] The first sealant structure 130 is filled in the first receiving groove 1102, that is, filled in the sinking area, and the first sealant structure 130 contacts the groove wall of the first receiving groove 1102, so that the first sealant structure 130 can seal the gap between the main body 111 and the connector 120, that is, the gap between the shell 110 and the connector 120 is sealed.

[0086] In some embodiments, see Figure 8 The bottom wall surface of the first accommodating groove 1102 includes a first inclined surface 1104, and the first inclined surface 1104 is set close to the connector 120. In the first direction, the first inclined surface 1104 extends obliquely away from the central axis of the mounting through hole 1101. The first direction is from the second surface 1112 to the first surface 1111.

[0087] This configuration allows the bottom wall of the first receiving groove 1102 to be funnel-shaped, with the lowest point of the bottom wall of the first receiving groove 1102 close to the connector 120. When the first sealant structure 130 is disposed in the first receiving groove 1102, the first inclined surface 1104 can guide the first sealant structure 130 toward the connector 120, thereby enabling the first sealant structure 130 to better seal the gap between the body 111 and the connector 120. That is, the junction between the body 111 and the connector 120 is effectively covered by the first sealant structure 130. In particular, when the first sealant structure 130 is a glue layer formed by cured glue, when the glue is injected into the first receiving groove 1102 through the notch of the first receiving groove 1102, the first inclined surface 1104 can guide the glue toward the junction between the body 111 and the connector 120 and accumulate there, thereby improving the coverage of the junction between the body 111 and the connector 120 after the glue is cured.

[0088] In some embodiments, the bottom wall surface of the first receiving groove 1102 further includes a first flat surface (not shown), which is connected to the first inclined surface 1104 and is located on a side of the first inclined surface 1104 away from the connector 120. Of course, in other embodiments, the bottom wall surface of the first receiving groove 1102 may also include only the first inclined surface 1104.

[0089] In some embodiments, see Figure 8 The angle between the first bevel 1104 and the central axis of the mounting hole 1101 is 45° to 75°. The angle between the first bevel 1104 and the central axis of the mounting hole 1101 reflects the degree of inclination of the first bevel 1104. The larger the angle, the flatter the first bevel 1104 and the lower the guiding effect of the first bevel 1104. The smaller the angle, the steeper the first bevel 1104 and the more prominent the guiding effect of the first bevel 1104. However, if the angle is too small, less sealing material will actually enter the joint between the body 111 and the connector 120, which is not conducive to improving the sealing of the gap between the body 111 and the connector 120. As an example, the angle between the first bevel 1104 and the central axis of the mounting hole 1101 is 45°, 50°, 60°, 70°, or 75°.

[0090] In some embodiments, see Figure 8 , the width of the first receiving groove 1102 is 4mm to 5mm; the depth of the first receiving groove 1102 is 5mm to 6mm. The width and depth of the first receiving groove 1102 will affect the volume of the first receiving groove 1102, and then affect the volume and shape of the first sealant structure 130. Generally, if the width or depth of the first receiving groove 1102 is too small, the sealing effect of the first sealant structure 130 will be reduced, but if the width or depth of the first receiving groove 1102 is too large, it will easily cause waste. As an example, the width of the first receiving groove 1102 is 4.0mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm or 5.0mm; the depth of the first receiving groove 1102 is 5.0mm, 5.2mm, 5.4mm, 5.6mm, 5.8mm or 6.0mm.

[0091] In some embodiments, see Figures 3 to 13 The shell 110 also includes a second retaining rib 113 and a third retaining rib 114. Along the direction close to the mounting through hole 1101, the second retaining rib 113 and the third retaining rib 114 surround the mounting through hole 1101 in sequence and are spaced apart on the second surface 1112; the second receiving portion is a second receiving groove 1103 defined by the main body 111, the second retaining rib 113 and the third retaining rib 114, and the second sealant structure 140 is filled in the second receiving groove 1103; a portion of the connector 120 extends into the second receiving groove 1103 and contacts the second sealant structure 140.

[0092] The housing 110 further includes a second retaining rib 113 and a third retaining rib 114. The second retaining rib 113 and the third retaining rib 114 are spaced apart on the second surface 1112 of the body 111, i.e., there is a gap between the second retaining rib 113 and the third retaining rib 114. The second retaining rib 113 is disposed around the mounting hole 1101, that is, the second retaining rib 113 is an annular convex rib disposed around the mounting hole 1101. The third retaining rib 114 is disposed around the mounting hole 1101, that is, the third retaining rib 114 is also an annular convex rib disposed around the mounting hole 1101.

[0093] Along the direction close to the mounting hole 1101, the second blocking rib 113 and the third blocking rib 114 are arranged in sequence. Specifically, the third blocking rib 114 surrounds the mounting hole 1101, and the second blocking rib 113 surrounds the mounting hole 1101 and the third blocking rib 114 at the same time. That is to say, the second blocking rib 113 is located on the periphery of the third blocking rib 114, and the third blocking rib 114 is closer to the mounting hole 1101 than the second blocking rib 113.

[0094] The second receiving portion is a second receiving groove 1103 , which is defined by the body 111 , the second retaining rib 113 and the third retaining rib 114 . That is, the body 111 , the second retaining rib 113 and the third retaining rib 114 form the groove wall of the second receiving groove 1103 .

[0095] The notch of the second receiving groove 1103 is opposite to the body 111 and the opening of the second receiving groove 1103 faces away from the second surface 1112. Since the second retaining rib 113 and the third retaining rib 114 are both annular ribs, the second receiving groove 1103 is also an annular groove surrounding the mounting through hole 1101.

[0096] The second sealant structure 140 is filled in the second receiving groove 1103, that is, the second sealant structure 140 contacts the groove wall of the second receiving groove 1103. The connector 120 partially extends into the second receiving groove 1103, and the portion of the connector 120 extending into the second receiving groove 1103 also contacts the second sealant structure 140. In this way, the second sealant structure 140 can seal the gap between the groove wall of the second receiving groove 1103 and the portion of the connector 120 extending into the second receiving groove 1103, thereby sealing the gap between the housing 110 and the connector 120.

[0097] In some embodiments, see Figure 7 、 Figures 11 to 13The connector 120 includes a main body 121, a step portion 122 and a protrusion 123. The main body 121 is inserted into the mounting through hole 1101, the step portion 122 is protruded on the outer peripheral surface of the main body 121, and the protrusion 123 is protruded on the step surface 1221 of the step portion 122 and is spaced apart from the main body 121. The protrusion 123 extends into the second accommodating groove 1103 and is wrapped by the second sealant structure 140.

[0098] The connector 120 includes a main body 121. The connector 120 is inserted into the mounting hole 1101. Specifically, the main body 121 is inserted into the mounting hole 1101. The main body 121 and the hole wall of the mounting hole 1101 can be a clearance fit or an interference fit.

[0099] Connector 120 also includes a step portion 122, which is disposed on main body 121 and protrudes from the outer circumference of main body 121, thereby forming a stepped arrangement between step portion 122 and main body 121. The surface of step portion 122 that connects to the outer circumference of main body 121 is formed as a step surface 1221. As an example, step portion 122 extends radially along main body 121, and step surface 1221 of step portion 122 is perpendicular to the outer circumference of main body 121.

[0100] The connector 120 further includes a protrusion 123, which is disposed on the step portion 122 and protrudes from the step surface 1221 of the step portion 122. The protrusion 123 is opposite to the main body 121 and spaced apart from each other, which can reduce interference of the main body 121 on the protrusion 123.

[0101] Part of the connector 120 extends into the second accommodating groove 1103, specifically the protrusion 123 of the connector 120 extends into the second accommodating groove 1103, and the protrusion 123 is wrapped by the second sealant structure 140 in the second accommodating groove 1103, so that the second sealant structure 140 seals the gap between the groove wall of the second accommodating groove 1103 and the protrusion 123 of the connector 120, thereby achieving sealing of the gap between the shell 110 and the connector 120.

[0102] The protrusion 123 may have various shapes, such as a ring shape, a column shape, etc. The number of the protrusion 123 may be one or more.

[0103] In some embodiments, see Figure 11The raised portion 123 is a ring rib, and the ring rib, the main body 121 and the step portion 122 define a third accommodating groove 124, and the third retaining rib 114 extends into the third accommodating groove 124; the second sealant structure 140 includes a first sub-portion 141 and a second sub-portion 142, the first sub-portion 141 is located in the second accommodating groove 1103 and is clamped between the inner wall of the second accommodating groove 1103 and the ring rib, and the second sub-portion 142 is located in the third accommodating groove 124 and is clamped between the inner wall of the third accommodating groove 124 and the third retaining rib 114.

[0104] The raised portion 123 is a ring rib that surrounds the main body 121. The ring rib, the main body 121, and the stepped portion 122 together define a third receiving groove 124. The ring rib and the main body 121 form the side walls of the third receiving groove 124, and the stepped portion 122 forms the bottom wall of the third receiving groove 124. The notch of the third receiving groove 124 faces the body 111.

[0105] The second sealant structure 140 includes a first sub-portion 141 and a second sub-portion 142. The first sub-portion 141 is located within the second receiving groove 1103, and the second sub-portion 142 is located within the third receiving groove 124. The third retaining rib 114 extends into the third receiving groove 124 and contacts the second sub-portion 142 located therein. The second sub-portion 142 seals the gap between the inner wall of the third receiving groove 124 and the third retaining rib 114. The annular rib extends into the second receiving groove 1103 and contacts the first sub-portion 141 located therein. The first sub-portion 141 seals the gap between the inner wall of the second receiving groove 1103 and the annular rib.

[0106] It can be seen that the above arrangement can further form a double seal between the second sealant structure 140 and the shell 110 and the connector 120. At the same time, the annular rib and the third retaining rib 114 extend into the second accommodating groove 1103 and the third accommodating groove 124 respectively. This not only increases the sealing interface but also makes the sealing interface more tortuous, thereby increasing the difficulty of corrosive media such as water vapor passing through the gap between the shell 110 and the connector 120 from one side of the shell 110 to the other side of the shell 110.

[0107] In some embodiments, the height of the second retaining rib 113 is higher than the height of the third retaining rib 114, relative to the body 111. It will be appreciated that the second retaining rib 113 is located on the side of the third retaining rib 114 facing away from the connector 120. When the second retaining rib 113 is higher than the third retaining rib 114, the second retaining rib 113 can prevent the first sub-portion 141 from extending out of the second receiving groove 1103. In particular, when the second sealant structure 140 is a glue layer formed by cured glue, the higher height of the second retaining rib 113 can reduce the risk of glue flowing out of the second receiving groove 1103, i.e., reduce the risk of glue overflow, when the glue is injected into the second receiving groove 1103.

[0108] In some embodiments, the step surface 1221 of the step portion 122 abuts against the second retaining rib 113. Specifically, the free end of the second retaining rib 113 contacts the step surface 1221 of the step portion 122. In this way, the first sub-portion 141 can be confined within the second receiving groove 1103. In particular, when the second sealant structure 140 is a glue layer formed by curing glue, when the glue is injected into the second receiving groove 1103, the protrusion 123 can be extended into the second receiving groove 1103 by pressing down the connector 120. When the step portion 122 abuts against the second retaining rib 113, the glue in the second receiving groove 1103 is easily squeezed to flow to the third receiving groove 124 and fill the third receiving groove 124, thereby better sealing the gap between the shell 110 and the connector 120.

[0109] In some embodiments, the step portion 122 is located on the inner side of the second retaining rib 113 and is in clearance fit with the second retaining rib 113. Specifically, the free end of the step portion 122 is in clearance fit with the inner surface of the second retaining rib 113. In this way, the first sub-portion 141 can be limited without increasing the difficulty of assembling the shell 110 and the connector 120. At the same time, when the second sealant structure 140 is a glue layer formed by curing glue, when the glue is injected into the second receiving groove 1103, the protrusion 123 can be extended into the second receiving groove 1103 by pressing down the connector 120. When the step portion 122 is in clearance fit with the second retaining rib 113, the glue in the second receiving groove 1103 is easily squeezed to flow to the third receiving groove 124 and fill the third receiving groove 124, thereby better sealing the gap between the shell 110 and the connector 120.

[0110] In some embodiments, see Figure 8 The inner surface of the third retaining rib 114 is formed as the side wall surface of the mounting hole 1101. In the first direction, the inner surface of the third retaining rib 114 extends obliquely toward the direction close to the central axis of the mounting hole 1101. The first direction is the direction from the second surface 1112 to the first surface 1111.

[0111] This arrangement allows mounting hole 1101 to form a tapered hole. In the first direction, the diameter of mounting hole 1101 gradually decreases, i.e., mounting hole 1101 has a larger end with a larger diameter and a smaller end with a smaller diameter. Thus, during assembly of housing 110 and connector 120, connector 120 is inserted into mounting hole 1101 from the larger end. The inner surface of third retaining rib 114 acts as a guide, guiding connector 120 toward the smaller end, thus reducing assembly difficulty.

[0112] In some embodiments, see Figure 8 The angle between the inner surface of the third retaining rib 114 and the central axis of the mounting hole 1101 is 45° to 75°. Generally, the smaller the angle, the smaller the larger end, which makes it difficult for the connector 120 to extend into the mounting hole 1101 from the larger end. The larger the angle, the flatter the inner surface of the third retaining rib 114, which makes it difficult to guide the connector 120. Furthermore, an excessively large angle also makes it difficult for the third retaining rib 114 to position the connector 120. As examples, the angle between the inner surface of the third retaining rib 114 and the central axis of the mounting hole 1101 is 45°, 50°, 60°, 70°, or 75°.

[0113] In some embodiments, the width of the second receiving groove 1103 is 4 mm to 5 mm; the depth of the second receiving groove 1103 is 5 mm to 6 mm. The width and depth of the second receiving groove 1103 will affect the volume of the second receiving groove 1103, and thus affect the volume and shape of the second sealant structure 140. Generally, if the width or depth of the second receiving groove 1103 is too small, the sealing effect of the second sealant structure 140 will be reduced, but if the width or depth of the second receiving groove 1103 is too large, it will easily cause waste. As an example, the width of the second receiving groove 1103 is 4.0 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm or 5.0 mm; the depth of the second receiving groove 1103 is 5.0 mm, 5.2 mm, 5.4 mm, 5.6 mm, 5.8 mm or 6.0 mm.

[0114] In some embodiments, see Figure 5 、 Figure 10 and Figure 13 The sealing structure 100 further includes a first connecting structure 150 disposed on the housing 110 and a second connecting structure 160 disposed on the connector 120, wherein the first connecting structure 150 is connected to the second connecting structure 160. In other words, the housing 110 can be connected to the connector 120 via the first connecting structure 150 and the second connecting structure 160, thereby further improving the relative position stability between the housing 110 and the connector 120, thereby enabling the first sealant structure 130 and the second sealant structure 140 to effectively seal the gap between the housing 110 and the connector 120.

[0115] It should be noted that the connection between the housing 110 and the connector 120 can also be achieved through other methods. In some examples, when the first sealant structure 130 and the second sealant structure 140 are adhesive layers formed by cured glue, the housing 110 and the connector 120 can be bonded together by the first sealant structure 130 and the second sealant structure 140. In other examples, the connection between the housing 110 and the connector 120 can also be achieved through an interference fit between the connector 120 and the mounting through-hole 1101.

[0116] There is no limitation on the connection method between the first connection structure 150 and the second connection structure 160 , which may be a clamping connection, a threaded connection, or a welding connection.

[0117] In some embodiments, see Figure 5 The first connection structure 150 is snap-fitted to the second connection structure 160. Compared with other connection methods, the snap-fitting method is not only simple to assemble, but also has reliable connection performance.

[0118] As an example, see Figure 5 The first connecting structure 150 includes a spring sheet, which is integrally formed and arranged on the second retaining rib 113, and a card hole is provided on the spring sheet; the second connecting structure 160 includes a side wall and a card block, the side wall is arranged on the step portion 122 and extends in a direction away from the protrusion 123, and the card block is arranged on the side wall; the spring sheet fits the side wall, and the card block is inserted into the card hole to achieve card connection.

[0119] In some embodiments, see Figure 10 , the first connecting structure 150 is located on the side of the shell 110 where the second accommodating portion is formed. In this case, in order to connect with the first connecting structure 150, the second connecting structure 160 is generally also provided on one end of the connector 120 corresponding to the second accommodating portion. The second sealant structure 140 is provided in the second accommodating portion, and the connector 120 is fixed by the first connecting structure 150, thereby making the sealing effect more reliable. Especially when the second accommodating portion is the second accommodating groove 1103 and the connector 120 partially extends into the second accommodating groove 1103, the connector 120 is simultaneously limited by the first connecting structure 150 and the second accommodating groove 1103, thereby improving the stability of the positional relationship between the connector 120 and the shell 110, thereby making the sealing effect more reliable.

[0120] In some embodiments, see Figures 11 to 13The connector 120 includes a main body 121, which is connected to the housing 110. The connector 120 also includes a terminal block 125, which is disposed on the main body 121. The terminal block 125 is a conductor, through which the connector 120 can transmit current and / or signals. The number of the terminal blocks 125 can be one or more. The terminal blocks 125 are disposed on the main body 121, which can support and protect the terminal blocks 125.

[0121] As an example, the main body 121 includes a cylinder and a partition arranged in the cylinder, the partition divides the space inside the cylinder into a first cavity and a second cavity, the wiring terminal 125 passes through the partition and is fixed on the partition, one end of the wiring terminal 125 extends into the first cavity, and the other end of the wiring terminal 125 extends into the second cavity.

[0122] In some embodiments, see Figure 5 The preparation process of the sealing structure 100 includes: injecting glue into the second receiving groove 1103, then aligning the connector 120 with the installation through hole 1101, pressing the connector 120 so that the main body 121 on the connector 120 passes through the installation through hole 1101, and the protrusion 123 on the connector 120 is inserted into the second receiving groove 1103 on the shell 110, and the first connecting structure 150 and the second connecting structure 160 are simultaneously snapped together; as the protrusion 123 is inserted into the second receiving groove 1103, the glue in the second receiving groove 1103 further flows into the third receiving groove 124 on the connector 120, and the second sealant structure 140 is obtained after the glue is cured; turning over the shell 110, and then injecting glue into the first receiving groove 1102 again, and the first sealant structure 130 is obtained after the glue is cured. Thanks to the structure of the sealing structure 100, the preparation process of the sealing structure 100 is simple, and the sealing performance of the sealing structure 100 is reliable.

[0123] Second, see Figure 14 An embodiment of the present application provides a battery 200, including a battery management system module 210, a battery cell module 220 and a storage box 230. The battery management system module 210 and the battery cell module 220 are arranged in the storage box 230. The storage box 230 includes the sealing structure 100 as described above. The battery management system module 210 is electrically connected to the battery cell module 220 and the connector 120.

[0124] The battery management system module 210 and the battery cell module 220 are both loaded in the receiving box 230 , and the receiving box 230 can protect the battery management system module 210 and the battery cell module 220 .

[0125] The cell module 220 refers to a unit structure containing cell batteries. A cell, also known as a battery monomer, is a basic unit for converting chemical energy into electrical energy. Optionally, the cell is a rechargeable cell, which can convert chemical energy into electrical energy. The number of cells in the cell module 220 can be one or more. When there is one cell, one cell constitutes a cell module 220; when there are multiple cells, multiple cells are spliced ​​together to form a cell module 220.

[0126] The battery management system (BMS) module 210 is electrically connected to the cell module 220. The BMS module 210 manages the cell module 220, ensuring safe and efficient operation, thereby extending the service life of the battery 200. As an example, the BMS module 210 includes a BMS board. Furthermore, the BMS module 210 is electrically connected to the connector 120, which allows the BMS module 210 to transmit current or signals to the outside world, thereby managing and controlling the cells in the cell module 220.

[0127] The battery 200 provided in the embodiment of the present application includes the above-mentioned sealing structure 100, so the battery 200 also has all the beneficial effects of the sealing structure 100, which will not be described in detail here.

[0128] In some embodiments, see Figure 14 The receiving box 230 includes a box body 231 and a cover body 232 provided on the box body 231, and the housing 110 is the cover body 232. Of course, in other embodiments, the housing 110 can also be the box body 231.

[0129] In some embodiments, see Figure 14The battery 200 also includes an integrated busbar 240, through which the battery management system module 210 connects to the cell module 220. The integrated busbar 240 and the battery management system module 210 are disposed on the cover 232. The integrated busbar 240, also known as a CCS (Cells Contact System) assembly, enables electrical connection between the cells in the cell module 220 and also electrically connects the cell module 220 to the battery management system module 210. For example, the integrated busbar 240 includes a plastic bracket and a busbar. The busbar is a conductive member disposed on the plastic bracket and electrically connects the cells in the cell module 220 and the battery management system module 210, or the busbar electrically connects only the cells in the cell module 220. For example, the battery management system module 210 is disposed on the integrated busbar 240, which is also disposed on the cover 232. Of course, in other embodiments, the integrated busbar 240 and the battery management system module 210 may also be disposed on the box 231 .

[0130] In some embodiments, the battery 200 is a battery pack.

[0131] In some embodiments, the battery pack is a low-voltage battery pack, and the output voltage of the low-voltage battery pack is less than or equal to 48 V. As an example, the battery 200 can be a 12V low-voltage battery pack, a 24V low-voltage battery pack, or a 48V low-voltage battery pack.

[0132] In some embodiments, the low-voltage battery pack is a starting battery pack. A starting battery pack, also known as a starting power supply, is a power supply device used to provide initial power to a device or system to start its operation. As an example, a starting battery pack includes an automobile starting power supply.

[0133] Thirdly, see Figure 15 , an embodiment of the present application provides an electric device 300, including the battery 200 as described above.

[0134] The electrical device 300 includes the battery 200 described above. The electrical device 300 has all the beneficial effects of the battery 200 described above, which will not be described in detail in this application.

[0135] It should be noted that the electrical device 300 includes but is not limited to at least one of a vehicle and a processing tool. For example, the vehicle includes a car, an aircraft, etc.; the processing tool includes an electric drill, an electric screwdriver, etc.

[0136] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A sealing structure (100), characterized in that: The invention comprises a shell (110) having a mounting through hole (1101) and a connector (120) inserted into the mounting through hole (1101); a first receiving portion and a second receiving portion arranged around the mounting through hole (1101) are respectively formed on opposite sides of the shell (110); the sealing structure (100) further comprises a first sealing glue structure (130) and a second sealing glue structure (140) respectively arranged in the first receiving portion and the second receiving portion, wherein the first sealing glue structure (130) and the second sealing glue structure (140) are used to seal the gap between the shell (110) and the connector (120).

2. The sealing structure (100) according to claim 1, characterized in that The housing (110) comprises a body (111), the body (111) having a first surface (1111) and a second surface (1112) opposite to each other, and the mounting through hole (1101) passes through the body (111).

3. The sealing structure (100) according to claim 2, characterized in that: The shell (110) further includes a first retaining rib (112), which is arranged on the first surface (1111) around the mounting through hole (1101) and spaced apart from the connector (120); the first housing portion is a sinking area defined by a portion of the body (111) adjacent to the mounting through hole (1101) and the first retaining rib (112), the sinking area being close to the connector (120) and forming a first receiving groove (1102), and the first sealant structure (130) being filled in the first receiving groove (1102).

4. The sealing structure (100) according to claim 3, characterized in that: The bottom wall surface of the first accommodating groove (1102) includes a first inclined surface (1104), and the first inclined surface (1104) is arranged to be close to the connector (120). In a first direction, the first inclined surface (1104) extends obliquely in a direction away from the central axis of the mounting through hole (1101), and the first direction is the direction from the second surface (1112) to the first surface (1111).

5. The sealing structure (100) according to claim 4, characterized in that: The included angle between the first inclined surface (1104) and the central axis of the mounting through hole (1101) is 45° to 75°.

6. The sealing structure (100) according to claim 3, characterized in that The width of the first receiving groove (1102) is 4 mm to 5 mm; and / or the depth of the first receiving groove (1102) is 5 mm to 6 mm.

7. The sealing structure (100) according to claim 2, characterized in that The shell (110) further includes a second retaining rib (113) and a third retaining rib (114), and along the direction close to the mounting through hole (1101), the second retaining rib (113) and the third retaining rib (114) are sequentially arranged around the mounting through hole (1101) and spaced apart on the second surface (1112); the second receiving portion is a second receiving groove (1103) defined by the body (111), the second retaining rib (113) and the third retaining rib (114), and the second sealing structure (140) is filled in the second receiving groove (1103); a portion of the connector (120) extends into the second receiving groove (1103) and contacts the second sealing structure (140).

8. The sealing structure (100) according to claim 7, characterized in that: The connector (120) includes a main body (121), a step portion (122) and a protrusion (123), wherein the main body (121) is inserted into the mounting through hole (1101), the step portion (122) is protruded on the outer peripheral surface of the main body (121), the protrusion (123) is protruded on the step surface (1221) of the step portion (122) and is spaced apart from the main body (121), and the protrusion (123) extends into the second receiving groove (1103) and is wrapped by the second sealant structure (140).

9. The sealing structure (100) according to claim 8, characterized in that: The raised portion (123) is a ring rib, and the ring rib, the main body (121) and the step portion (122) define a third receiving groove (124), and the third retaining rib (114) extends into the third receiving groove (124); the second sealant structure (140) includes a first sub-portion (141) and a second sub-portion (142), the first sub-portion (141) is located in the second receiving groove (1103) and is clamped between the inner wall of the second receiving groove (1103) and the ring rib, and the second sub-portion (142) is located in the third receiving groove (124) and is clamped between the inner wall of the third receiving groove (124) and the third retaining rib (114).

10. The sealing structure (100) according to claim 9, characterized in that: Taking the body (111) as a reference, the height of the second retaining rib (113) is higher than the height of the third retaining rib (114).

11. The sealing structure (100) according to claim 10, characterized in that: The step surface (1221) of the step portion (122) abuts against the second retaining rib (113), or the step portion (122) is located inside the second retaining rib (113) and is clearance-matched with the second retaining rib (113).

12. The sealing structure (100) according to claim 7, characterized in that: The inner surface of the third retaining rib (114) is formed as a side wall surface of the mounting through hole (1101), and in a first direction, the inner surface of the third retaining rib (114) extends obliquely toward the direction close to the central axis of the mounting through hole (1101), and the first direction is the direction from the second surface (1112) to the first surface (1111).

13. The sealing structure (100) according to claim 12, characterized in that: The included angle between the inner surface of the third retaining rib (114) and the central axis of the mounting through hole (1101) is 45° to 75°.

14. The sealing structure (100) according to claim 7, characterized in that The width of the second receiving groove (1103) is 4 mm to 5 mm; and / or the depth of the second receiving groove (1103) is 5 mm to 6 mm.

15. The sealing structure (100) according to any one of claims 1 to 14, characterized in that: The sealing structure (100) further includes a first connecting structure (150) provided on the housing (110) and a second connecting structure (160) provided on the connector (120), wherein the first connecting structure (150) is connected to the second connecting structure (160).

16. The sealing structure (100) according to claim 15, characterized in that The first connecting structure (150) is snap-connected with the second connecting structure (160).

17. The sealing structure (100) according to claim 15, characterized in that The first connection structure (150) is located on a side of the housing (110) where the second receiving portion is formed.

18. The sealing structure (100) according to any one of claims 1 to 14, characterized in that: The connector (120) includes a main body (121) connected to the housing (110). The connector (120) also includes a connection terminal (125) provided on the main body (121).

19. The sealing structure (100) according to any one of claims 1 to 14, characterized in that: The connector (120) is a communication connector.

20. The sealing structure (100) according to any one of claims 1 to 14, characterized in that: The first sealant structure (130) is a glue layer formed by the glue solidifying in the first receiving portion; and / or the second sealant structure (140) is a glue layer formed by the glue solidifying in the second receiving portion.

21. A battery (200), characterized in that The invention comprises a battery management system module (210), a battery cell module (220) and a housing box (230), wherein the battery management system module (210) and the battery cell module (220) are arranged in the housing box (230), and the housing box (230) comprises a sealing structure (100) according to any one of claims 1 to 20, and the battery management system module (210) is electrically connected to the battery cell module (220) and the connector (120).

22. The battery (200) according to claim 21, characterized in that The accommodating box (230) comprises a box body (231) and a cover body (232) disposed on the box body (231), and the housing (110) serves as the cover body (232).

23. The battery (200) according to claim 22, characterized in that The battery (200) further includes an integrated busbar (240), the battery management system module (210) is connected to the cell module (220) via the integrated busbar (240), and the integrated busbar (240) and the battery management system module (210) are arranged on the cover (232).

24. The battery (200) according to claim 21, characterized in that The battery (200) is a battery pack.

25. The battery (200) according to claim 24, characterized in that The battery pack is a low-voltage battery pack, and the output voltage of the low-voltage battery pack is less than or equal to 48V.

26. The battery (200) according to claim 25, characterized in that The low-voltage battery pack is a starting battery pack.

27. An electrical device (300), characterized in that: A battery (200) comprising any one of claims 21 to 26.

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