Battery device, relay, and electric device

Abstract

This application relates to a battery device, a relay, and an electrical device, comprising a housing, a battery module, and a relay. The battery module is housed within the housing; the relay is electrically connected to the battery module. The relay includes an insulating cover and a stationary contact. The insulating cover is an insulating body with a first receiving cavity; the stationary contact is disposed within the first receiving cavity, and one end of the stationary contact extends through a first opening communicating with the first receiving cavity; wherein the stationary contact is configured with a snap-fit ​​groove, and the insulating cover is provided with a snap-fit ​​portion capable of snapping into the snap-fit ​​groove. When the stationary contact is subjected to a large external force during use, the snap-fit ​​portion can distribute the force on the stationary contact, thereby making the force at the connection between the stationary contact and the insulating cover more balanced, reducing the possibility of failure at the connection point, and the snap-fit ​​action of the snap-fit ​​groove can restrict the movement of the stationary contact, thus reducing the possibility of control failure of the relay and making the use of the battery device and the electrical device safer.

Description

Technical Field

[0001] This application relates to the field of battery device technology, and in particular to battery devices, relays, and electrical devices. Background Technology

[0002] In battery-powered devices, relays connect the battery module to the electrical device to control the circuit and switch between series and parallel operation. In related technologies, a slender connector is typically used to connect the stationary contact of the relay to the ceramic insulating cover. However, this connector is prone to breakage due to its structural design, ultimately causing the relay to fail.

[0003] However, due to limitations in ceramic welding processes, the thickness of the connectors cannot be increased significantly to avoid connection failure caused by excessive stress resulting from thermal expansion and contraction during welding. This makes the relay prone to control failure, thus affecting the safety of the battery device. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device, a relay, and an electrical device that can reduce the possibility of relay control failure and improve the safety of the battery device and the electrical device.

[0005] In a first aspect, this application provides an electrical device, which includes a housing, a battery module, and a relay. The battery module is disposed within the housing; the relay is electrically connected to the battery module. The relay includes an insulating cover and a stationary contact. The insulating cover includes an insulating body, which has a first receiving cavity; the stationary contact is disposed within the first receiving cavity, and one end of the stationary contact extends through a first opening communicating with the first receiving cavity; wherein the stationary contact has a snap-fit ​​groove, and the insulating cover has a snap-fit ​​portion capable of snapping into the snap-fit ​​groove.

[0006] The relay for the electrical device provided in this application embodiment has a mutually cooperating locking groove and locking part at the connection between the stationary contact and the insulating cover. Therefore, when the stationary contact is subjected to a large external force during use, the locking part can distribute the force on the stationary contact, thereby making the force at the connection between the stationary contact and the insulating cover more balanced, reducing the possibility of failure at the connection. Furthermore, the locking action of the locking groove can restrict the movement of the stationary contact. Compared with the existing method of simply fixing the stationary contact and the insulating cover together with a single connector, this connection is more stable, making it less prone to connection failure. This reduces the possibility of relay control failure and makes the use of battery devices and electrical devices safer.

[0007] In some embodiments, the insulating cover further includes an extension located outside the first receiving cavity; the extension is connected to the insulating body, and a snap-fit ​​portion is disposed at the end of the extension away from the insulating body. By providing an extension on the insulating cover and disposing of the snap-fit ​​portion at the end of the extension away from the insulating body, the processing of the snap-fit ​​portion is more convenient, i.e., the snap-fit ​​portion is set and formed through the end of the extension.

[0008] In some embodiments, the extension extends along the axis of the first opening. By configuring the extension to extend along the axis of the first opening, the extension is easier to process and can effectively ensure processing accuracy.

[0009] In some embodiments, the extension and the insulating body are an integral structure. By making the extension and the insulating body an integral structure, the processing and manufacturing of both are more convenient.

[0010] In some embodiments, the extension is spaced apart from the stationary contact. By spaced apart from the stationary contact, the sidewall of the second part of the stationary contact is spaced apart from the sidewall of the extension, so that when the snap-fit ​​part is snapped into the snap-fit ​​groove, the sidewall of the extension is less likely to rub against the sidewall of the second part, thereby making the snap-fit ​​process between the snap-fit ​​part and the snap-fit ​​groove smoother.

[0011] In some embodiments, a snap-fit ​​groove is located on the portion of the stationary contact that extends out of the first opening; the stationary contact has a support portion located outside the first opening and supported on the insulating body along the axial direction of the first opening. By providing a support portion on the stationary contact, the connection between the stationary contact and the insulating body is made more stable by connecting the stationary contact and the insulating cover through the support portion.

[0012] In some embodiments, the support portion is configured to at least partially surround the axis of the first opening. By configuring the support portion to at least partially surround the axis of the first opening, the support portion can be arranged around the outer periphery of the stationary contact along the axis of the first opening, thereby making the connection between the support portion and the insulating body more stable and the stress distribution more even.

[0013] In some embodiments, the support and the stationary contact are integrally formed. By making the support and the stationary contact an integral structure, their manufacturing and processing become more convenient.

[0014] In some embodiments, the snap-fit ​​groove is located on the side of the support portion away from the insulating body, along the direction in which the stationary contact extends from the first opening. By positioning the snap-fit ​​groove on the side of the support portion away from the insulating body, it is easier for the snap-fit ​​portion to engage from the outside of the support portion when it is snapped into the snap-fit ​​groove.

[0015] In some embodiments, the maximum dimension of the extension along the axial direction of the first opening is greater than the maximum dimension of the support along the axial direction of the first opening.

[0016] In some embodiments, the stationary contact includes a first part and a second part. One end of the first part extends out of a first opening; the second part is connected to the end of the first part extending out of the first opening; wherein the radial dimension of the second part is larger than the radial dimension of the first part, and a snap-fit ​​groove is provided on the second part. By setting the radial dimension of the second part to be larger than the radial dimension of the first part, when the stationary contact is disposed in the first opening, the first part with a smaller radial dimension can easily pass through the first opening and cooperate with the moving contact, while the second part with a larger radial dimension has a snap-fit ​​groove thereon to facilitate the snap-fit ​​of the snap-fit ​​portion.

[0017] In some embodiments, one end of the support is connected to the side surface of the second part facing the insulating body, and the other end of the support is connected to the insulating body. Since the snap-fit ​​groove is located on the outer wall of the second part, placing the support between the side surface of the second part facing the insulating body and the insulating body effectively enhances the connection strength between the stationary contact and the insulating cover. Furthermore, it allows the support to be radially positioned inside the snap-fit ​​groove, facilitating the snap-fit ​​connection between the support and the insulating body after welding them together.

[0018] In some embodiments, the maximum dimension h1 of the snap-fit ​​portion along the first direction and the maximum dimension h2 of the second portion along the first direction satisfy the condition: 0.1h2≤h1≤0.5h2; the first direction is the direction from the first portion to the second portion. By setting the maximum dimension h1 of the snap-fit ​​portion along the first direction to be greater than or equal to 0.1 times the maximum dimension h2 of the second portion along the first direction, and less than or equal to 0.5 times the maximum dimension h2 of the second portion along the first direction, the relationship between the dimensions of the snap-fit ​​portion and the second portion is made more reasonable, effectively ensuring the structural strength of the second portion and the strength of the snap-fit ​​portion.

[0019] In some embodiments, along the second direction, the maximum dimension h1 of the snap-fit ​​portion along the first direction and the maximum dimension h2 of the second portion along the first direction satisfy the condition: 0.1h2≤h1≤0.2h2. By setting the maximum dimension h1 of the snap-fit ​​portion along the first direction to be greater than or equal to 0.1 times the maximum dimension h2 of the second portion along the first direction, and less than or equal to 0.2 times the maximum dimension h2 of the second portion along the first direction, the relationship between the dimensions of the snap-fit ​​portion and the second portion is made more reasonable, effectively ensuring the structural strength of the second portion and the strength of the snap-fit ​​portion.

[0020] In some embodiments, the dimension d1 of the snap-fit ​​portion along the second direction and the dimension d2 of the second portion along the second direction satisfy the condition: 0.2d2≤d1≤(2 / 3)d2; the second direction is the side where the bottom wall of the snap-fit ​​groove faces the opening. By setting the dimension d1 of the snap-fit ​​portion along the second direction to be greater than or equal to the dimension d2 of the second portion along the second direction, and less than or equal to two-thirds of the dimension d2 of the second portion along the second direction, the width of the snap-fit ​​portion relative to the second portion is made more reasonable, effectively ensuring the stability and ease of snap-fit.

[0021] In some embodiments, the dimension d3 of the extension along the second direction satisfies the condition: d3 ≥ 0.5 mm; the second direction is the side where the bottom wall of the snap-fit ​​groove faces the opening. By setting the dimension d3 of the extension along the second direction to be greater than or equal to 0.5 mm, the structural strength of the extension itself is effectively guaranteed.

[0022] In some embodiments, the snap-fit ​​grooves are configured to at least partially surround the axis of the first opening. By configuring the snap-fit ​​grooves to at least partially surround the axis of the first opening, the snap-fit ​​grooves can be arranged around the outer periphery of the stationary contact along the axis of the first opening, thereby making the connection between the multiple snap-fit ​​grooves and the insulating cover through the snap-fit ​​portion more stable and the stress distribution more even.

[0023] In some embodiments, the snap-fit ​​portion and the snap-fit ​​groove are clearance-fitted. By making the snap-fit ​​portion and the snap-fit ​​groove clearance-fitted, it is easier for the snap-fit ​​portion to snap into the snap-fit ​​groove, and when the stationary contact is subjected to tension or pressure along the first direction, the gap between the snap-fit ​​portion and the snap-fit ​​groove allows for a certain amount of movement margin when the stationary contact moves along the first direction.

[0024] In some embodiments, the gap d4 between the snap-fit ​​part and the snap-fit ​​groove satisfies the condition: 0.02mm ≤ d4 ≤ 0.5mm. By setting the gap d4 between the snap-fit ​​part and the snap-fit ​​groove to a range greater than or equal to 0.02mm and less than or equal to 0.5mm, the gap d4 between the snap-fit ​​part and the snap-fit ​​groove is within a reasonable range, thereby making the snap-fit ​​between the two more stable and easier to assemble.

[0025] In some embodiments, the bottom wall of the snap-fit ​​groove is configured to gradually widen towards the opening; the shape of the snap-fit ​​groove is adapted to the snap-fit ​​part. By configuring the bottom wall of the snap-fit ​​groove to gradually widen towards the opening, the snap-fit ​​groove has a structure that is wider at the front and narrower at the back from the opening towards the bottom wall, which facilitates the snap-fit ​​of the snap-fit ​​part and makes it less likely for the two to detach after snap-fit.

[0026] In some embodiments, the snap-fit ​​portion is constructed with multiple snap-fit ​​protrusions, which are spaced apart along the extending direction of the extension portion. By constructing multiple snap-fit ​​protrusions on the snap-fit ​​portion, the multiple snap-fit ​​protrusions can engage with the snap-fit ​​groove, thereby achieving stable support and force distribution for the stationary contact, making the connection between the stationary contact and the insulating cover more secure and less prone to detachment.

[0027] In some embodiments, the snap-fit ​​portion is configured to at least partially surround the axis of the first opening. By configuring the snap-fit ​​portion to at least partially surround the axis of the first opening, the snap-fit ​​portion can be arranged around the outer periphery of the stationary contact along the axis of the first opening, thereby making the connection between the snap-fit ​​portion and the stationary contact more stable and the stress distribution more even.

[0028] In some embodiments, the relay further includes at least one moving contact; the moving contact is disposed within a first receiving cavity, and the moving contact is capable of moving closer to or away from the stationary contact along a first direction; the first direction is the direction from the stationary contact to the moving contact. The moving contact is configured with a moving contact surface that can abut against the stationary contact, and the end of the stationary contact near the moving contact is configured with a stationary contact surface. When the moving contact is controlled to move closer to or away from the stationary contact along the first direction, the moving contact surface can abut against or separate from the stationary contact surface, thereby realizing the connection or disconnection of the two, so as to ultimately realize the on / off control of the circuit connection.

[0029] In some embodiments, the relay further includes a base assembly and a housing. The base assembly includes an electromagnet electrically connected to the moving contact; the electromagnet drives the moving contact to move closer to or further away from the stationary contact in a first direction; the housing is mounted on the base assembly and has a second receiving cavity with a second opening; the moving contact and the insulating body are housed within the second receiving cavity; the end of the stationary contact facing away from the moving contact extends through the second opening. By providing the base assembly, the electromagnet on the base assembly drives the moving contact to move relative to the stationary contact; that is, when the electromagnet is energized, electromagnetic force is generated through the principle of electromagnetic induction, thereby driving the moving contact to move, making the movement of the moving contact more convenient. Furthermore, the housing protects the moving contact, the insulating body, and the stationary contact, making the entire relay operation safer.

[0030] In some embodiments, the relays are mounted on the housing. When the number of relays is small or their size is small, the relays can be directly mounted on the battery housing.

[0031] In some embodiments, the battery device further includes an electrical compartment; the electrical compartment is spaced apart from the housing; and a relay is mounted on the electrical compartment. When the number of relays is large or their size is large, an additional electrical compartment is added, spaced apart from the housing, and the relay is mounted on the electrical compartment.

[0032] Secondly, this application provides a relay including an insulating cover and a stationary contact. The insulating cover includes an insulating body having a first receiving cavity; the stationary contact is disposed within the first receiving cavity, and one end of the stationary contact extends out through a first opening communicating with the first receiving cavity; wherein the stationary contact has a snap-fit ​​groove, and the insulating cover has a snap-fit ​​portion capable of snapping into the snap-fit ​​groove.

[0033] The relay provided in this application embodiment has a mutually cooperating locking groove and locking part at the connection between the stationary contact and the insulating cover. Therefore, when the stationary contact is subjected to a large external force during use, the locking part can distribute the force on the stationary contact, thereby making the force at the connection between the stationary contact and the insulating cover more balanced, reducing the possibility of failure at the connection. Furthermore, the locking action of the locking groove can restrict the movement of the stationary contact. Compared with the existing method of simply fixing the stationary contact and the insulating cover together with a single connector, this connection is more stable, making it less prone to connection failure. This reduces the possibility of relay control failure and makes the use of battery devices and electrical devices safer.

[0034] Thirdly, this application provides an electrical device that includes the battery device described in any of the above embodiments, the battery device being used to provide electrical energy to the electrical device.

[0035] The electrical device provided in this application embodiment, when in use, features a locking groove and a locking part at the connection between the stationary contact of the relay in the battery device and the insulating cover. Therefore, when the stationary contact is subjected to a large external force during use, the locking part can distribute the force on the stationary contact, resulting in a more balanced force at the connection between the stationary contact and the insulating cover. This reduces the possibility of connection failure and restricts the movement of the stationary contact through the locking action of the locking groove. Compared to existing methods that simply use a connector to fix the stationary contact and the insulating cover, this connection is more stable, making it less prone to connection failure. This reduces the possibility of relay control failure and ultimately makes the use of the battery device and the electrical device safer.

[0036] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0037] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0038] Figure 1 A schematic diagram of an electrical device provided for some embodiments of this application.

[0039] Figure 2 Provided for some embodiments of this application Figure 1 The diagram shows the connection between the battery and the relay in the electrical device.

[0040] Figure 3 Provided for other embodiments of this application Figure 1 The diagram shows the connection between the battery and the relay in the electrical device.

[0041] Figure 4 for Figure 1 A schematic diagram of a relay in an electrical device is shown.

[0042] Figure 5 for Figure 4 The left view shown.

[0043] Figure 6 The relays provided in some embodiments of this application are Figure 5 The sectional view shown at point AA.

[0044] Figure 7 for Figure 6 A magnified view of point B shown.

[0045] Figure 8 The relays provided for other embodiments of this application are Figure 5 The sectional view shown at point AA.

[0046] Figure 9 for Figure 8 A magnified view of point C shown.

[0047] Figure 10 The relays provided in some embodiments of this application are Figure 5 The sectional view shown at point AA.

[0048] Figure 11 for Figure 10 The enlarged view of point D shown.

[0049] The reference numerals in the detailed embodiments are as follows:

[0050] 10000 - Vehicles;

[0051] 1000 - Relay;

[0052] 110 - Insulating cover; 111 - Insulating body; 111a - First receiving cavity; 111a1 - First opening; 112 - Extension; 112a - Snap-fit ​​part; 112a1 - Snap-fit ​​protrusion;

[0053] 120 - Stationary contact; 121 - Support section; 122 - First part; 123 - Second part; 123a - Snap-in groove; 124 - Connection cavity;

[0054] 130 - Moving contact;

[0055] 140 - Base assembly;

[0056] 150 - Outer shell; 151 - Second receiving cavity; 151a - Second opening;

[0057] 2000-battery;

[0058] 210 - Enclosure; 211 - Storage space; 220 - Electrical compartment;

[0059] 3000-Controller;

[0060] 4000-motor. Detailed Implementation

[0061] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0063] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0064] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0065] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0066] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0067] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0068] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0069] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0070] A relay is a commonly used electrical control device. When a certain voltage is applied to the relay, the moving contact of the relay will move towards the stationary contact to close the circuit. When the voltage is removed, the moving contact of the relay will disengage from the stationary contact to close the circuit. This achieves the on / off control of the circuit.

[0071] In power batteries, relays connect the battery module to the electrical device to control the circuit's on / off state and switch between series and parallel circuits. In related technologies, a slender connector is typically used to connect the stationary contact of the relay to the ceramic insulating cover. However, this connector's structural design makes it prone to breakage and failure, ultimately causing the relay to malfunction.

[0072] However, due to limitations in ceramic welding processes, the thickness of the connectors cannot be increased significantly to avoid connection failure caused by excessive stress resulting from thermal expansion and contraction during welding. This makes the relays prone to control failures, thus affecting the safety of the power battery.

[0073] Based on the above considerations, in order to reduce the possibility of relay control failure during the use of power batteries, this application provides a battery device that provides a snap-fit ​​part on the insulating cover of the relay and a snap-fit ​​groove on the stationary contact. Through the cooperation of the snap-fit ​​part and the snap-fit ​​groove, when the stationary contact is subjected to a large external force during use, the snap-fit ​​part can distribute the force on the stationary contact, thereby making the force at the connection between the stationary contact and the insulating cover more balanced, reducing the possibility of failure at the connection, and making the use of the battery device and the electrical device safer.

[0074] The electrical devices disclosed in the embodiments of this application can be used, but are not limited to, vehicles, ships, or aircraft. Specifically, the electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0075] For ease of explanation, the following embodiments will be described using a vehicle 10000 as an example of an electrical device according to an embodiment of this application.

[0076] Please refer to Figure 1 , Figure 1The diagram illustrates the structure of an electrical device according to some embodiments of this application. The electrical device is a vehicle 10000, which can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery 2000 is internally installed in the vehicle 10000, and the battery 2000 can be located at the bottom, front, or rear of the vehicle 10000. The battery 2000 can be used to power the vehicle 10000; for example, the battery 2000 can serve as the operating power source for the vehicle 10000. The vehicle 10000 may also include a controller 3000 and a motor 4000. The controller 3000 controls the battery 2000 to supply power to the motor 4000, for example, to meet the power needs of the vehicle 10000 during startup, navigation, and driving.

[0077] In some embodiments of this application, the battery 2000 can not only serve as the operating power source for the vehicle 10000, but also as the driving power source for the vehicle 10000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 10000.

[0078] Please see Figure 2 and Figure 3 , Figure 2 Some embodiments of this application are shown. Figure 1 The diagram shows the connection between the battery 2000 and the relay 1000 in the electrical device. Figure 3 Other embodiments of this application are shown. Figure 1 The diagram shows the connection between the battery 2000 and the relay 1000 in the electrical device. This application provides a battery device comprising a housing 210, a battery module, and a relay 1000. The battery module is housed within the housing 210; the relay 1000 is electrically connected to the battery module.

[0079] The housing 210 is configured to provide space for housing the battery module. The battery module may include multiple battery cells, which can be connected in series, parallel, or a combination thereof. A combination thereof means that some battery cells are connected in series while others are in parallel. Multiple battery cells can be directly connected in series, parallel, or a combination thereof, and then the battery module, consisting of these multiple battery cells, is housed within the housing 210. At least one battery module ultimately constitutes the battery 2000 of the electrical device. The series-parallel connection of the battery module is switched by controlling the movement of the moving contact 130 of the relay 1000 in the battery device.

[0080] Please see Figure 5 and combined Figures 6-11 , Figure 5 It shows Figure 4 The left view shown. Figure 6 The relay 1000 provided in some embodiments of this application is shown. Figure 5The sectional view shown at point AA. Figure 7 It shows Figure 6 A magnified view of point B shown. Figure 8 The relay 1000 provided in other embodiments of this application is shown in Figure 5 The sectional view shown at point AA. Figure 9 It shows Figure 8 A magnified view of point C shown. Figure 10 The relay 1000 provided in some embodiments of this application is shown. Figure 5 The sectional view shown at point AA. Figure 11 It shows Figure 10 The enlarged view of point D shown.

[0081] The relay 1000 provided in this application embodiment includes an insulating cover 110 and a stationary contact 120. The insulating cover 110 includes an insulating body 111, which has a first receiving cavity 111a. The stationary contact 120 is disposed in the first receiving cavity 111a, and one end of the stationary contact 120 extends out through a first opening 111a1 communicating with the first receiving cavity 111a. The stationary contact 120 has a snap-fit ​​groove 123a, and the insulating cover 110 has a snap-fit ​​portion 112a that can snap into the snap-fit ​​groove 123a.

[0082] The insulating cover 110 can be made of ceramic materials, such as alumina or aluminum nitride, which gives the insulating cover 110 high electrical insulation performance, good temperature resistance and high mechanical strength.

[0083] The stationary contact 120 is used in conjunction with the moving contact 130 in the relay 1000 to control the on / off state of the circuit. When the stationary contact 120 and the moving contact 130 are in contact, a conductive path is formed, making the circuit continuous. When the stationary contact 120 and the moving contact 130 are separated, the conductive path is broken, making the circuit disconnected. Each relay 1000 can have multiple stationary contacts 120 spaced apart, so that different circuits can be connected by different combinations of the stationary contact 120 and the moving contact 130.

[0084] The snap-fit ​​groove 123a is an open snap-fit ​​groove 123a, and the opening of the snap-fit ​​groove 123a is arranged along the radial direction of the stationary contact 120, facing away from the stationary contact 120, to facilitate the snap-fit ​​connection of the snap-fit ​​part 112a. The snap-fit ​​groove 123a can be arranged at any position on the stationary contact 120. For example, it can be arranged outside the first receiving cavity 111a; or it can be arranged at the opening wall of the first opening 111a1; of course, it can also be arranged inside the first receiving cavity 111a1. There is no special limitation on this, and it can be adapted to the assembly difficulty and the usage environment.

[0085] The stationary contact 120 is connected to other external connectors on the side opposite to the moving contact 130. Specifically, the side of the stationary contact 120 opposite to the moving contact 130 has a connecting cavity 124, which may have an internal thread. The external connectors are connected to the stationary contact 120 through the connecting cavity 124. During use of the relay 1000, the external connectors transmit tensile or compressive force to the stationary contact 120, thereby enabling the stationary contact 120 to move along a first direction, that is... Figures 6-11 The tendency of the stationary contact 120 to move in the zz' direction is such that when the stationary contact 120 moves slightly along the first direction, the connection between the stationary contact 120 and the insulating cover 110 will be subjected to a large external force, which will make the connection between the two prone to failure.

[0086] The relay 1000 in the battery device provided in this application has a mutually cooperating locking groove 123a and locking part 112a at the connection between the stationary contact 120 and the insulating cover 110. Therefore, when the stationary contact 120 is subjected to a large external force during use, the locking part 112a can distribute the force on the stationary contact 120, thereby making the force at the connection between the stationary contact 120 and the insulating cover 110 more balanced, reducing the possibility of failure at the connection. Furthermore, the locking action of the locking groove 123a can restrict the movement of the stationary contact 120. Compared with the existing method of simply fixing the stationary contact 120 and the insulating cover 110 with a single connector, this connection is more stable, making it less prone to connection failure. This reduces the possibility of control failure of the relay 1000, making the use of the battery device and the electrical device safer.

[0087] Please see Figures 6-11 In some embodiments, the insulating cover 110 further includes an extension 112 located outside the first receiving cavity 111a; the extension 112 is connected to the insulating body 111, and a snap-fit ​​portion 112a is disposed at the end of the extension 112 away from the insulating body 111.

[0088] The extension 112 can be made of some high-strength metals, such as kova alloy, or a composite material of kova alloy and oxygen-free copper. Of course, the extension 112 can also be made of ceramic material.

[0089] The extension 112 is connected to the insulating body 111, and the snap-fit ​​portion 112a is constructed on the extension 112. The extension 112 is located on the side of the support portion 121 away from the axis p of the first opening 111a1.

[0090] By providing an extension 112 on the insulating cover 110 and providing a snap-fit ​​portion 112a at the end of the extension 112 away from the insulating body 111, the processing of the snap-fit ​​portion 112a is made more convenient, that is, the snap-fit ​​portion 112a is set and formed by the end of the extension 112.

[0091] Please see Figures 6-11 In some embodiments, the extension 112 extends along the axis p of the first opening 111a1.

[0092] When manufacturing the extension 112, it can be positioned along the axis of the first opening 111a1 before manufacturing. This facilitates the manufacturing of the extension 112 and effectively ensures the positioning accuracy and the positional and dimensional accuracy of the snap-fit ​​portion 112a manufactured on the extension 112.

[0093] Please see Figures 6-11 In some embodiments, the extension 112 and the insulating body 111 are integral structures.

[0094] The extension 112 and the insulating body 111 can be processed by 3D printing, casting or laser processing, so that the structure of the insulating cover 110 is irregular, which makes it easy for the extension 112 to be integrally processed with the insulating body 111 and can ensure the processing accuracy of the insulating cover 110.

[0095] In this application, the extension 112 and the insulating body 111 are made into an integral structure, which makes the processing and preparation of both more convenient.

[0096] Please see Figures 6-11 In some embodiments, the extension 112 is spaced apart from the stationary contact 120.

[0097] The extension 112 has a certain gap with the outer wall of the stationary contact 120, so as to facilitate the snap-fit ​​connection between the snap-fit ​​portion 112a on the extension 112 and the snap-fit ​​arm on the stationary contact 120.

[0098] This application provides a spaced arrangement between the extension 112 and the stationary contact 120, that is, as follows: Figures 6-11 As shown, the sidewall of the second part 123 of the stationary contact 120 is spaced apart from the sidewall of the extension 112. This makes it less likely for the sidewall of the extension 112 to rub against the sidewall of the second part 123 when the snap-fit ​​part 112a is snapped into the snap-fit ​​groove 123a, thus making the snap-fit ​​process between the snap-fit ​​part 112a and the snap-fit ​​groove 123a smoother.

[0099] Please see Figures 6-11In some embodiments, the snap-fit ​​groove 123a is located on the portion of the stationary contact 120 that extends out of the first opening 111a1; the stationary contact 120 is provided with a support portion 121 located outside the first opening 111a1 and supported on the insulating body 111 along the axial direction of the first opening 111a1; specifically, the axis of the first opening 111a1 is... Figure 7 , Figure 9 as well as Figure 11 The p-line.

[0100] The stationary contact 120 extends into the first opening 111a1, and the end of the stationary contact 120 that is housed in the first receiving cavity 111a is used to abut or separate from the moving contact 130. The portion of the stationary contact 120 that extends out of the first opening 111a1 forms a snap-fit ​​groove 123a.

[0101] The insulating cover 110 has a snap-fit ​​portion 112a on the side opposite to the first receiving cavity 111a, so that the snap-fit ​​portion 112a on the insulating cover 110 can be snap-fitted to the stationary contact 120 outside the first receiving cavity 111a.

[0102] By providing a support portion 121 on the stationary contact 120, the stationary contact 120 and the insulating body 111 are connected through the support portion 121, making the connection between the stationary contact 120 and the insulating body 111 more stable.

[0103] Brazing is a welding method in which a filler metal with a flux lower than the melting point of the workpiece and the workpiece are simultaneously heated to the melting temperature of the filler metal, and the liquid filler metal fills the gaps in the solid workpiece to connect the metals. In some embodiments, the support portion 121 can be brazed to the insulating body 111. Connecting the support portion 121 and the insulating body 111 by brazing results in minimal deformation at the joint, high mechanical strength, and an aesthetically pleasing joint. It is also easily automated, leading to high production efficiency.

[0104] The relay 1000 of the electrical device provided in this application has a support portion 121 and an extension portion 112 between the stationary contact 120 and the insulating body 111, and a snap-fit ​​portion 112a is provided at the end of the extension portion 112 away from the insulating body 111. The second part 123 of the stationary contact 120 is provided with a snap-fit ​​groove 123a that engages with the snap-fit ​​portion 112a. Therefore, when the stationary contact 120 is subjected to a large external force, and when the stationary contact 120 moves and deforms, the extension portion 112 promptly limits and disperses the force through the snap-fit ​​portion 112a and the snap-fit ​​groove 123a, avoiding the support portion 121 from being subjected to force alone. This reduces the stress at the connection between the insulating cover 110 and the stationary contact 120 to within the permissible application range, preventing failure at the connection.

[0105] Please see Figures 6-11In some embodiments, the support 121 is configured to at least partially surround the axis of the first opening 111a1; specifically, the axis of the first opening 111a1 is... Figure 7 , Figure 9 as well as Figure 11 The p-line.

[0106] In some embodiments, the support portion 121 is a continuous surrounding structure along the circumference of the first opening 111a1, that is, it is configured as a continuous structure around the axis p of the first opening 111a1. By configuring the support portion 121 as a continuous surrounding structure along the circumference of the first opening 111a1, the connection between the stationary contact 120 and the insulating cover 110 is made more stable.

[0107] In other embodiments, the support portion 121 has a discontinuous surrounding structure along the circumference of the first opening 111a1. For example, multiple support portions 121 are spaced apart from each other along the circumference of the first opening 111a1, that is, multiple support portions 121 are spaced apart around the axis p of the first opening 111a1. By setting the number of support portions 121 to multiple, and setting multiple support portions 121 around the axis p of the first opening 111a1, less raw material is used for the support portions 121, and the connection between the stationary contact 120 and the insulating cover 110 is more stable.

[0108] In some embodiments, the support portion 121 has only a portion of its structure along the circumference of the first opening 111a1, such as half a circle or two-thirds of a circle. By constructing the support portion 121 as having only a portion of its structure along the circumference of the first opening 111a1, that is, only a portion is arranged around the axis p of the first opening 111a1, the support portion 121 uses less raw material and the processing technology is simpler.

[0109] Please see Figures 6-11 In some embodiments, the support 121 and the stationary contact 120 are an integral structure.

[0110] The support portion 121 can be directly machined onto the stationary contact 120 during the machining process. For example, if the stationary contact 120 is formed by casting, the shape of the support portion 121 can be directly set in the mold, thereby making the two integrally formed.

[0111] By making the support portion 121 and the stationary contact 120 an integral structure, the manufacturing and processing of both are more convenient. Of course, in other embodiments, the support portion 121 and the stationary contact 120 can also be manufactured separately, and then welded together after the manufacturing and processing are completed.

[0112] Brazing is a welding method in which a filler metal with a fluxing agent (below the melting point of the workpiece) and the workpiece are simultaneously heated to the melting temperature of the filler metal, and the liquid filler metal fills the gaps in the solid workpiece to connect the metals. In some embodiments, the support portion 121 can be brazed to the stationary contact 120. Connecting the support portion 121 and the stationary contact 120 by brazing results in minimal deformation at the connection point, high mechanical strength, and an aesthetically pleasing joint. It is also easily automated, leading to high production efficiency.

[0113] Please see Figures 6-11 In some embodiments, along the direction in which the stationary contact 120 extends from the first opening 111a1, the snap-fit ​​groove 123a is located on the side of the support portion 121 away from the insulating body 111; specifically, the direction in which the stationary contact 120 extends from the first opening 111a1 is... Figures 6-11 In this context, z' points in the direction of z.

[0114] The snap-fit ​​groove 123a can be provided on the outer periphery of the support portion 121 on the side opposite to the first opening 111a1. By positioning the snap-fit ​​groove 123a on the side of the support portion 121 away from the insulating body 111, when the snap-fit ​​portion 112a is snapped into the snap-fit ​​groove 123a, it can be easily snapped into from the outside of the support portion 121, which is more convenient.

[0115] In some embodiments, the snap-fit ​​portion 112a is disposed on the outer side of the support portion 121 along the radial direction of the stationary contact 120, thereby facilitating the snap-fit ​​portion 112a to snap into the snap-fit ​​groove 123a.

[0116] Please see Figures 6-11 In some embodiments, the maximum dimension of the extension 112 along the axial direction of the first opening 111a1 is greater than the maximum dimension of the support 121 along the axial direction of the first opening 111a1.

[0117] The maximum dimension of the extension 112 along the axial direction of the first opening 111a1 is greater than the maximum dimension of the support 121 along the axial direction of the first opening 111a1. That is, the extension 112 is located above the support 121, which makes it easy for the snap-fit ​​portion 112a on the extension 112 to be directly snapped into the snap-fit ​​groove 123a on the upper side of the support 121 without being easily interfered by the support 121.

[0118] Please see Figures 6-11 In some embodiments, the stationary contact 120 includes a first portion 122 and a second portion 123; one end of the first portion 122 extends out and is disposed in a first opening 111a1; the second portion 123 is connected to the end of the first portion 122 that extends out of the first opening 111a1; wherein, the radial dimension of the second portion 123 is greater than the radial dimension of the first portion 122, and a snap-fit ​​groove 123a is disposed in the second portion 123.

[0119] The end of the first part 122 facing away from the second part 123 is used to mate with the moving contact 130. The outer side wall of the second part 123 is provided with a snap-fit ​​groove 123a. By setting the radial dimension of the second part 123 to be larger than that of the first part 122, when the stationary contact 120 is disposed in the first opening 111a1, the first part 122 with a smaller radial dimension can easily pass through the first opening 111a1 and mate with the moving contact 130, while the second part 123 with a larger radial dimension is provided with a snap-fit ​​groove 123a to facilitate the snap-fit ​​of the snap-fit ​​part 112a.

[0120] Please see Figures 6-11 In some embodiments, one end of the support portion 121 is connected to the side surface of the second portion 123 facing the insulating body 111, and the other end of the support portion 121 is connected to the insulating body 111.

[0121] The material of the support portion 121 can be the same as that of the stationary contact 120. The end of the support portion 121 near the second part 123 can be integrally formed with the second part 123, or welded to the second part 123; the end of the support portion 121 away from the second part 123 is welded to the insulating body 111 made of insulating material. For example, brazing can be used for welding, resulting in minimal deformation at the joint, high mechanical strength, and an aesthetically pleasing connection. This also facilitates automation and increases production efficiency.

[0122] Since the snap-fit ​​groove 123a is located on the outer wall of the second part 123, the support part 121 is positioned between the side surface of the second part 123 facing the insulating body 111 and the insulating body 111, which effectively enhances the connection strength between the stationary contact 120 and the insulating body 111. Furthermore, the support part 121 is positioned radially along the stationary contact 120 inside the snap-fit ​​groove 123a, facilitating the snap-fit ​​connection of the snap-fit ​​part 112a to the snap-fit ​​groove 123a after the support part 121 is welded to the insulating body 111.

[0123] Please see Figure 7 , Figure 9 as well as Figure 11 In some embodiments, the maximum dimension h1 of the latching portion 112a along the first direction and the maximum dimension h2 of the second portion 123 along the first direction satisfy the condition: 0.1h2≤h1≤0.5h2; the first direction is the direction from the first portion 122 to the second portion 123; specifically, the first direction is... Figures 6-11 The direction of zz' in the middle.

[0124] Because the snap-fit ​​groove 123a is located on the second part 123, and the size of the snap-fit ​​portion 112a is adapted to the size of the snap-fit ​​groove 123a, controlling the dimensional relationship between the snap-fit ​​portion 112a and the second part 123 is equivalent to controlling the size of the snap-fit ​​groove 123a and the second part 123. When the size of the snap-fit ​​groove 123a is too large compared to the size of the second part 123, the structural strength of the second part 123 is low; while when the size of the snap-fit ​​groove 123a is too small compared to the size of the second part 123, the size of the snap-fit ​​portion 112a is small, the strength of the snap-fit ​​portion 112a itself is low, and it is prone to shaking when snapped into the snap-fit ​​groove 123a, resulting in poor stress dispersion for the stationary contact 120.

[0125] This application sets the maximum dimension h1 of the snap-fit ​​portion 112a along the first direction to be greater than or equal to 0.1 times the maximum dimension h2 of the second part 123 along the first direction, and less than or equal to 0.5 times the maximum dimension h2 of the second part 123 along the first direction. This makes the relationship between the dimensions of the snap-fit ​​portion 112a and the second part 123 more reasonable, effectively ensuring the structural strength of the second part 123 and the strength of the snap-fit ​​portion 112a.

[0126] In some embodiments, the maximum dimension h1 of the latching portion 112a along the first direction is equal to 0.1 times the maximum dimension h2 of the second portion 123 along the first direction. In other embodiments, the maximum dimension h1 of the latching portion 112a along the first direction is equal to 0.5 times the maximum dimension h2 of the second portion 123 along the first direction. In still other embodiments, the maximum dimension h1 of the latching portion 112a along the first direction is equal to 0.3 times the maximum dimension h2 of the second portion 123 along the first direction.

[0127] Please see Figure 7 , Figure 9 as well as Figure 11 In some embodiments, the maximum dimension h1 of the snap-fit ​​portion 112a along the first direction and the maximum dimension h2 of the second portion 123 along the first direction satisfy the condition: 0.1h2≤h1≤0.2h2.

[0128] By setting the maximum dimension h1 of the snap-fit ​​portion 112a along the first direction to be greater than or equal to 0.1 times the maximum dimension h2 of the second part 123 along the first direction, and less than or equal to 0.2 times the maximum dimension h2 of the second part 123 along the first direction, the relationship between the dimensions of the snap-fit ​​portion 112a and the second part 123 is made more reasonable, effectively ensuring the structural strength of the second part 123 and the strength of the snap-fit ​​portion 112a.

[0129] In some embodiments, the maximum dimension h1 of the latching portion 112a along the first direction is equal to 0.11 times the maximum dimension h2 of the second portion 123 along the first direction. In other embodiments, the maximum dimension h1 of the latching portion 112a along the first direction is equal to 0.2 times the maximum dimension h2 of the second portion 123 along the first direction. In still other embodiments, the maximum dimension h1 of the latching portion 112a along the first direction is equal to 0.15 times the maximum dimension h2 of the second portion 123 along the first direction.

[0130] Please see Figure 7 , Figure 9 as well as Figure 11 In some embodiments, the dimension d1 of the snap-fit ​​portion 112a along the second direction and the dimension d2 of the second portion 123 along the second direction satisfy the condition: 0.2d2≤d1≤(2 / 3)d2; the second direction is the side where the bottom wall of the snap-fit ​​groove 123a faces the opening; specifically, the second direction is... Figure 7 , Figure 9 as well as Figure 11 The direction of xx' in the middle.

[0131] The dimension d1 of the latching part 112a along the second direction is the maximum dimension of the latching part 123a. When the dimension of the latching part 112a along the second direction is large, the dimension of the latching part 112a in the latching groove 123a is large, and the stability after latching is better. When the dimension of the latching part 112a along the second direction is small, the dimension of the latching part 112a in the latching groove 123a is small, and it is easier to latch.

[0132] By setting the dimension d1 of the snap-fit ​​portion 112a along the second direction to be greater than or equal to the dimension d2 of the second portion 123 along the second direction, and less than or equal to two-thirds of the dimension d2 of the second portion 123 along the second direction, the width of the snap-fit ​​portion 112a relative to the width of the second portion 123 is made more reasonable, effectively ensuring the stability and ease of snap-fit.

[0133] In some embodiments, the dimension d1 of the latching portion 112a along the second direction is equal to 0.2 times the dimension d2 of the second portion 123 along the second direction. In other embodiments, the dimension d1 of the latching portion 112a along the second direction is equal to two-thirds of the dimension d2 of the second portion 123 along the second direction. In still other embodiments, the dimension d1 of the latching portion 112a along the second direction is equal to 0.4 times the dimension d2 of the second portion 123 along the second direction.

[0134] In some embodiments, the dimension d1 of the snap-fit ​​portion 112a along the second direction and the dimension d2 of the second portion 123 along the second direction satisfy the condition: 0.2d2≤d1≤0.5d2. By setting the dimension d1 of the snap-fit ​​portion 112a along the second direction to be greater than or equal to the dimension d2 of the second portion 123 along the second direction, and less than or equal to 0.5 times the dimension d2 of the second portion 123 along the second direction, the width of the snap-fit ​​portion 112a relative to the width of the second portion 123 is made more reasonable, effectively ensuring the stability and ease of snap-fit.

[0135] In some embodiments, the dimension d1 of the latching portion 112a along the second direction is equal to 0.3 times the dimension d2 of the second portion 123 along the second direction. In other embodiments, the dimension d1 of the latching portion 112a along the second direction is equal to 0.5 times the dimension d2 of the second portion 123 along the second direction. In still other embodiments, the dimension d1 of the latching portion 112a along the second direction is equal to 0.35 times the dimension d2 of the second portion 123 along the second direction.

[0136] Please see Figure 7 , Figure 9 as well as Figure 11 In some embodiments, the dimension d3 of the extension 112 along the second direction satisfies the condition: d3 ≥ 0.5 mm; the second direction is the side where the bottom wall of the snap-fit ​​groove 123a faces the opening; specifically, the second direction is... Figure 7 , Figure 9 as well as Figure 11 The direction of xx' in the middle.

[0137] The dimension of the extension 112 along the second direction cannot be set too small, otherwise the stability of the extension 112 itself will be poor. When the snap-fit ​​part 112a snaps into the snap-fit ​​groove 123a, the extension 112 is prone to bending after the stationary contact 120 is subjected to force, making it difficult to effectively support and distribute the force on the stationary contact 120.

[0138] This application effectively ensures the structural strength of the extension 112 by setting the dimension d3 of the extension 112 along the second direction to be greater than or equal to 0.5 mm.

[0139] In one embodiment, the extension 112 has a dimension d3 of 0.5 mm along the second direction. In another embodiment, the extension 112 has a dimension d3 of 0.9 mm along the second direction. In yet another embodiment, the extension 112 has a dimension d3 of 1.2 mm along the second direction.

[0140] In some embodiments, the dimension d3 of the extension 112 along the second direction satisfies the condition: 0.5mm ≤ d3 ≤ 1mm. The dimension d3 of the extension 112 cannot be designed to be too large, which makes the processing and fabrication of the extension 112 more difficult.

[0141] In one embodiment, the extension 112 has a dimension d3 of 0.55 mm along the second direction. In another embodiment, the extension 112 has a dimension d3 of 0.8 mm along the second direction. In yet another embodiment, the extension 112 has a dimension d3 of 1 mm along the second direction.

[0142] Please see Figure 10 and Figure 11 In some embodiments, the snap-fit ​​portion 112a is configured with a plurality of snap-fit ​​protrusions 112a1, which are spaced apart along the extending direction of the extension portion 112; specifically, the extending direction of the extension portion 112 is... Figures 10-11 The direction of zz' in the middle.

[0143] Multiple snap-fit ​​protrusions 112a1 may be the same in shape and size or different in shape and size; there is no special limitation on this.

[0144] By constructing multiple snap-fit ​​protrusions 112a1 on the snap-fit ​​portion 112a, the multiple snap-fit ​​protrusions 112a1 can snap into the snap-fit ​​groove 123a, thereby achieving stable support and force distribution for the stationary contact 120, making the connection between the stationary contact 120 and the insulating cover 110 more stable and less likely to detach.

[0145] In one specific embodiment, the latching portion 112a has two latching protrusions 112a1, and the two latching protrusions 112a1 are the same in shape and size. Of course, in other embodiments, the latching portion 112a may also have three or four latching protrusions 112a1, and there is no particular limitation on this.

[0146] Please see Figures 6-11 In some embodiments, the snap-fit ​​groove 123a is configured to at least partially surround the axis of the first opening 111a1; specifically, the axis of the first opening 111a1 is... Figure 7 , Figure 9 as well as Figure 11 The p-line.

[0147] The number of snap-fit ​​slots 123a can be multiple, and some of the multiple snap-fit ​​slots 123a can be arranged around the axis p of the first opening 111a1. By setting the number of snap-fit ​​slots 123a to multiple, the connection between the stationary contact 120 and the insulating cover 110 is made more secure.

[0148] By configuring the snap-fit ​​groove 123a to at least partially surround the axis p of the first opening 111a1, the snap-fit ​​groove 123a can be arranged around the outer periphery of the stationary contact 120 along the axis p of the first opening 111a1, thereby making the connection between the multiple snap-fit ​​grooves 123a and the insulating cover 110 through the snap-fit ​​part 112a more stable and the stress distribution more balanced.

[0149] Please see Figure 7 , Figure 9 as well as Figure 11 In some embodiments, the snap-fit ​​portion 112a and the snap-fit ​​groove 123a are in clearance fit.

[0150] The shapes of the snap-fit ​​part 112a and the snap-fit ​​groove 123a can be any shapes that can fit each other, such as a rectangular structure or a trapezoidal structure.

[0151] By making a clearance fit between the snap-fit ​​part 112a and the snap-fit ​​groove 123a, the snap-fit ​​part 112a can be easily snapped into the snap-fit ​​groove 123a. Moreover, when the stationary contact 120 is subjected to a pulling force or pressure along the first direction, the gap between the snap-fit ​​part 112a and the snap-fit ​​groove 123a can provide a certain amount of movement margin when the stationary contact 120 moves along the first direction.

[0152] Please see Figure 7 , Figure 9 as well as Figure 11 In some embodiments, the gap d4 between the snap-fit ​​portion 112a and the snap-fit ​​groove 123a satisfies the condition: 0.02mm≤d4≤0.5mm.

[0153] The gap d4 between the snap-fit ​​part 112a and the snap-fit ​​groove 123a should not be too large or too small. If it is too large, the snap-fit ​​between the two will be less secure; if it is too small, the two will be difficult to snap into place during assembly, making installation more difficult.

[0154] This application sets the gap d4 between the snap-fit ​​part 112a and the snap-fit ​​groove 123a to a range greater than or equal to 0.02 mm and less than or equal to 0.5 mm, thereby making the gap d4 between the snap-fit ​​part 112a and the snap-fit ​​groove 123a within a more reasonable range, thus making the snap-fit ​​between the two more stable and easier to assemble.

[0155] In one specific embodiment, the gap d4 between the snap-fit ​​portion 112a and the snap-fit ​​groove 123a is 0.02 mm. In another specific embodiment, the gap d4 between the snap-fit ​​portion 112a and the snap-fit ​​groove 123a is 0.5 mm. In yet another specific embodiment, the gap d4 between the snap-fit ​​portion 112a and the snap-fit ​​groove 123a is 0.2 mm.

[0156] Please see Figure 8 and Figure 9 In some embodiments, the bottom wall of the snap-fit ​​groove 123a is configured with a gradually widening structure facing the opening side; specifically, the bottom wall of the snap-fit ​​groove 123a facing the opening side is... Figures 8-9 The direction from x' towards x; the shape of the snap-fit ​​groove 123a is adapted to the snap-fit ​​part 112a.

[0157] The bottom wall of the snap-fit ​​groove 123a is designed to gradually widen towards the opening. For example, the snap-fit ​​groove 123a can be a trapezoidal structure or a partially conical structure. The snap-fit ​​groove 123a is adapted to the shape of the snap-fit ​​part 112a, thereby facilitating the snap-fit ​​between the two.

[0158] By setting the bottom wall of the snap-fit ​​groove 123a to a gradually expanding structure towards the opening, the snap-fit ​​groove 123a has a structure that is wider at the front and narrower at the back from the opening towards the bottom wall. This facilitates the snap-fit ​​of the snap-fit ​​part 112a, and the two are not easy to separate after snap-fit.

[0159] Please see Figures 6-11 In some embodiments, the snap-fit ​​portion 112a is configured to be arranged at least partially around the axis of the first opening 111a1.

[0160] In some embodiments, the latching portion 112a is a continuous surrounding structure along the circumference of the first opening 111a1, that is, it is set as a continuous structure around the axis p of the first opening 111a1. By setting the latching portion 112a as a continuous surrounding structure along the circumference of the first opening 111a1, the connection between the latching portion 112a and the stationary contact 120 is more stable, and ultimately the connection between the insulating cover 110 and the stationary contact 120 is more stable.

[0161] In other embodiments, the latching portion 112a has a discontinuous surrounding structure along the circumference of the first opening 111a1. For example, multiple latching portions 112a are spaced apart from each other along the circumference of the first opening 111a1, that is, multiple latching portions 112a are spaced apart around the axis p of the first opening 111a1. By setting the number of latching portions 112a to multiple and arranging them around the axis p of the first opening 111a1, less raw material is used for the latching portions 112a, and the connection between the latching portions 112a and the stationary contact 120 is more stable.

[0162] In some embodiments, the snap-fit ​​portion 112a has only a portion of its structure along the circumference of the first opening 111a1, such as half a circumference or two-thirds of a circumference, or other structures. By constructing the snap-fit ​​portion 112a as having only a portion of its structure along the circumference of the first opening 111a1, that is, only a portion is arranged around the axis p of the first opening 111a1, the amount of raw materials used for the snap-fit ​​portion 112a is reduced, and the processing technology is simplified.

[0163] Multiple snap-fit ​​portions 112a may be equally spaced around the circumference of the stationary contact 120, or they may be unequally spaced around the circumference of the stationary contact 120.

[0164] By configuring the snap-fit ​​portion 112a to at least partially surround the axis of the first opening 111a1, the snap-fit ​​portion 112a can be arranged around the outer periphery of the stationary contact 120 along the axis of the first opening 111a1, thereby making the connection between the snap-fit ​​portion 112a and the stationary contact 120 more stable.

[0165] Please see Figures 6-11 In some embodiments, the relay 1000 further includes at least one moving contact 130; the moving contact 130 is disposed within the first receiving cavity 111a, and the moving contact 130 is capable of moving closer to or further away from the stationary contact 120 along a first direction; the first direction is the direction from the stationary contact 120 to the moving contact 130; specifically, the first direction is... Figures 6-11 The direction of zz' in the middle.

[0166] The stationary contact 120 and the moving contact 130 can be made of conductive material, such as metal. In a relay 1000, multiple stationary contacts 120 and one moving contact 130 can be provided. The moving contact 130 abuts against at least two stationary contacts 120 to form a closed loop between them, thereby realizing the conduction of the circuit.

[0167] The moving contact 130 is constructed with a moving contact surface that can abut against the stationary contact 120, and the end of the stationary contact 120 near the moving contact 130 is constructed with a stationary contact surface. When the moving contact 130 is controlled to move closer to or further away from the stationary contact 120 in a first direction, the moving contact surface can abut against or separate from the stationary contact surface, thereby realizing the connection or disconnection of the two, so as to ultimately realize the on / off control of the circuit connection.

[0168] Please see Figure 6 , Figure 8 and Figure 10 In some embodiments, the relay 100 further includes a base assembly 140, which includes an electromagnet electrically connected to the moving contact 130; the electromagnet is used to drive the moving contact 130 to move closer to or further away from the stationary contact 120 in a first direction.

[0169] An electromagnet is a device that uses the magnetic field generated by an electric current flowing through a coil to attract or repel ferromagnetic materials. It exhibits magnetism when energized and loses its magnetism when de-energized, thus allowing for convenient control of the magnetism's activation and deactivation. The moving contact 130 is made of a ferromagnetic material, and the magnetic force exerted by the electromagnet on the moving contact is controlled by adjusting the current flow to the electromagnet. This causes the electromagnet to move the moving contact 130 closer to or further away from the moving contact along a first direction.

[0170] By setting the base assembly 140, the electromagnet on the base assembly 140 drives the moving contact 130 to move relative to the stationary contact 120. That is, when the electromagnet is energized, a magnetic field force is generated through electromagnetic induction, thereby driving the moving contact 130 to move, making the movement of the moving contact 130 more convenient.

[0171] Please see Figures 6-11 In some embodiments, the relay further includes a housing 150 mounted on a base assembly 140 and configured with a second receiving cavity 151 having a second opening 151a; a moving contact 130 and an insulating body 111 are accommodated within the second receiving cavity 151; and a stationary contact 120 extends through the second opening 151a at one end opposite to the moving contact 130.

[0172] The stationary contact 120 extends from the moving contact 130 through the second opening 151a, facilitating connection between the stationary contact 120 and an external connector. The housing 150 can be made of thermosetting plastics, thermoplastics, or other materials with good electrical insulation, mechanical strength, and flame retardant properties.

[0173] The moving contact 130, the insulating body 111, and the stationary contact 120 are protected by the housing 150, making the entire operation of the relay 1000 safer.

[0174] Please see Figure 2 In some embodiments, the relay 1000 is mounted on the housing 210. When the number of relays 1000 is small or their size is small, the relays 1000 can be directly mounted on the housing 210 of the battery 2000.

[0175] Please see Figure 3 In some embodiments, the battery device further includes an electrical compartment; the electrical compartment is spaced apart from the housing 210; and a relay 1000 is mounted on the electrical compartment. When the number of relays 1000 is large or their size is large, an additional electrical compartment is added, which is spaced apart from the housing 210, and the relay 1000 is mounted on the electrical compartment.

[0176] Therefore, the battery device provided in this application does not impose additional limitations on the installation position of the relay 1000, and it can be adaptively adjusted and modified according to the specific size and installation environment.

[0177] The electrical device provided in this application embodiment includes a housing 210, a battery module, and a relay 1000. The battery module is disposed inside the housing 210; the relay 1000 is electrically connected to the battery module. The relay 1000 includes an insulating cover 110, at least one stationary contact 120, and at least one moving contact 130. The insulating cover 110 includes an insulating body 111, which has a first receiving cavity 111a; the stationary contact 120 is disposed inside the first receiving cavity 111a, and one end of the stationary contact 120 extends out through a first opening 111a1 communicating with the first receiving cavity 111a; wherein the stationary contact 120 has a snap-fit ​​groove 123a, and the insulating cover 110 has a snap-fit ​​portion 112a that can snap into the snap-fit ​​groove 123a, with the snap-fit ​​portion 112a and the snap-fit ​​groove 123a in clearance fit. The insulating cover 110 also includes an extension 112 located outside the first receiving cavity 111a and extending along the axis p of the first opening 111a1; the extension 112 is connected to the insulating body 111, and a snap-fit ​​portion 112a is provided at the end of the extension 112 away from the insulating body 111. A snap-fit ​​groove 123a is located at the portion of the stationary contact 120 that extends out of the first opening 111a1; the stationary contact 120 is provided with a support portion 121 located outside the first opening 111a1 and supported on the insulating body 111 along the axis p of the first opening 111a1. One end of the support portion 121 is connected to the side surface of the second portion 123 facing the insulating body 111, and the other end of the support portion 121 is connected to the insulating body 111. The stationary contact 120 includes a first part 122 and a second part 123; one end of the first part 122 extends out and is disposed in a first opening 111a1; the second part 123 is connected to the end of the first part 122 that extends out of the first opening 111a1; wherein, the radial dimension of the second part 123 is larger than the radial dimension of the first part 122, and a snap-fit ​​groove 123a is disposed in the second part 123. The moving contact 130 is disposed in the first receiving cavity 111a, and the moving contact 130 is capable of moving closer to or away from the stationary contact 120 along a first direction; the first direction is the direction from the stationary contact 120 to the moving contact 130.

[0178] When the electrical device provided in this application is in use, because a mutually cooperating locking groove 123a and locking part 112a are provided at the connection between the stationary contact 120 and the insulating cover 110, when the stationary contact 120 is subjected to a large external force during use, the locking part 112a can disperse the force on the stationary contact 120, thereby making the force at the connection between the stationary contact 120 and the insulating cover 110 more balanced, reducing the possibility of failure at the connection, and the locking action of the locking groove 123a can restrict the movement of the stationary contact 120. Compared with the existing method of simply fixing the stationary contact 120 and the insulating cover 110 with a connector, this connection is more stable, and the connection between the stationary contact 120 and the insulating cover 110 is less likely to fail, thereby reducing the possibility of control failure of the relay 1000 and making the use of the battery device and the electrical device safer. Furthermore, since the locking groove 123a and the locking part 112a are in a clearance fit, the locking part 112a can be easily engaged into the locking groove 123a. Moreover, when the stationary contact 120 is subjected to tension or pressure along the first direction, the gap between the locking part 112a and the locking groove 123a allows for a certain amount of movement allowance when the stationary contact 120 moves along the first direction. Simultaneously, by providing a support part 121 on the stationary contact 120 and connecting the support part 121 between the stationary contact 120 and the insulating body 111, the connection between the stationary contact 120 and the insulating cover 110 is made more stable. Furthermore, by setting the radial dimension of the second part 123 to be larger than that of the first part 122, when the stationary contact 120 is placed in the first opening 111a1, the first part 122 with a smaller radial dimension can easily pass through the first opening 111a1 and cooperate with the moving contact 130, while the second part 123 with a larger radial dimension has a snap-fit ​​groove 123a on it to facilitate the snap-fit ​​of the snap-fit ​​part 112a. By providing an extension 112 on the insulating cover 110 and placing the snap-fit ​​part 112a at the end of the extension 112 away from the insulating body 111, the processing of the snap-fit ​​part 112a is more convenient. That is, the snap-fit ​​part 112a is set and formed through the end of the extension 112. This makes the entire electrical device safer to use, has a longer service life, and is easier to manufacture.

[0179] This application also provides a relay 1000, which includes an insulating cover 110 and a stationary contact 120. The insulating cover 110 includes an insulating body 111, which has a first receiving cavity 111a; the stationary contact 120 is disposed in the first receiving cavity 111a, and one end of the stationary contact 120 extends out through a first opening 111a1 communicating with the first receiving cavity 111a; wherein the stationary contact 120 has a snap-fit ​​groove 123a, and the insulating cover 110 is provided with a snap-fit ​​portion 112a that can snap into the snap-fit ​​groove 123a.

[0180] The insulating cover 110 can be made of ceramic materials, such as alumina or aluminum nitride, which gives the insulating cover 110 high electrical insulation performance, good temperature resistance and high mechanical strength.

[0181] The stationary contact 120 is used in conjunction with the moving contact 130 in the relay 1000 to control the on / off state of the circuit. When the stationary contact 120 and the moving contact 130 are in contact, a conductive path is formed, making the circuit continuous. When the stationary contact 120 and the moving contact 130 are separated, the conductive path is broken, making the circuit disconnected. Each relay 1000 can have multiple stationary contacts 120 spaced apart, so that different circuits can be connected by different combinations of the stationary contact 120 and the moving contact 130.

[0182] The snap-fit ​​groove 123a is an open snap-fit ​​groove 123a, and the opening of the snap-fit ​​groove 123a is arranged along the radial direction of the stationary contact 120, facing away from the stationary contact 120, to facilitate the snap-fit ​​connection of the snap-fit ​​part 112a. The snap-fit ​​groove 123a can be arranged at any position on the stationary contact 120. For example, it can be arranged outside the first receiving cavity 111a; or it can be arranged at the opening wall of the first opening 111a1; of course, it can also be arranged inside the first receiving cavity 111a1. There is no special limitation on this, and it can be adapted to the assembly difficulty and the usage environment.

[0183] The relay 1000 provided in this embodiment has a mutually cooperating locking groove 123a and locking part 112a at the connection between the stationary contact 120 and the insulating cover 110. Therefore, when the stationary contact 120 is subjected to a large external force during use, the locking part 112a can distribute the force on the stationary contact 120, thereby making the force at the connection between the stationary contact 120 and the insulating cover 110 more balanced, reducing the possibility of failure at the connection. Furthermore, the locking action of the locking groove 123a can restrict the movement of the stationary contact 120. Compared with the existing method of simply fixing the stationary contact 120 and the insulating cover 110 with a single connector, this connection is more stable, making it less prone to connection failure. This reduces the possibility of control failure of the relay 1000, making the use of the battery device and electrical device safer.

[0184] This application also provides an electrical device that includes a battery device as described in any of the above embodiments, the battery device being used to provide electrical energy to the electrical device.

[0185] In the application embodiment of the electrical device, the connection between the stationary contact 120 of the relay 1000 in the battery device and the insulating cover 110 is provided with a mutually cooperating locking groove 123a and locking part 112a. Therefore, when the stationary contact 120 is subjected to a large external force during use, the locking part 112a can disperse the force on the stationary contact 120, thereby making the force at the connection between the stationary contact 120 and the insulating cover 110 more balanced, reducing the possibility of failure at the connection. Furthermore, the locking action of the locking groove 123a can restrict the movement of the stationary contact 120. Compared with the existing method of simply fixing the stationary contact 120 and the insulating cover 110 with a connector, this connection is more stable, and the connection between the stationary contact 120 and the insulating cover 110 is less likely to fail, thereby reducing the possibility of control failure of the relay 1000 and ultimately making the use of the battery device and the electrical device safer.

[0186] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device includes: Box (210); The battery module is located inside the housing (210); and A relay (1000), electrically connected to the battery module, the relay (1000) comprising: An insulating cover (110) includes an insulating body (111) having a first receiving cavity (111a); and A stationary contact (120) is disposed in the first receiving cavity (111a), and one end of the stationary contact (120) extends out through a first opening (111a1) communicating with the first receiving cavity (111a); The stationary contact (120) is provided with a snap-fit ​​groove (123a), and the insulating cover (110) is provided with a snap-fit ​​part (112a) that can snap into the snap-fit ​​groove (123a).

2. The battery device of claim 1, wherein The insulating cover (110) also includes an extension (112) located outside the first receiving cavity (111a); The extension (112) is connected to the insulating body (111), and the snap-fit ​​portion (112a) is disposed at the end of the extension (112) away from the insulating body (111).

3. The battery device of claim 2, wherein The extension (112) extends along the axis of the first opening (111a1).

4. The battery device according to claim 2, characterized in that, The extension (112) and the insulating body (111) are an integral structure.

5. The battery device according to claim 2, characterized in that, The extension (112) is spaced apart from the stationary contact (120).

6. The battery device according to any one of claims 2-5, characterized in that, The snap-fit ​​groove (123a) is located at the portion of the stationary contact (120) that extends out of the first opening (111a1); The stationary contact (120) is provided with a support portion (121) located outside the first opening (111a1) and supported on the insulating body (111) along the axial direction of the first opening (111a1).

7. The battery device according to claim 6, characterized in that, The support (121) is configured to be arranged at least partially around the axis of the first opening (111a1).

8. The battery device according to claim 6, characterized in that, The support (121) and the stationary contact (120) are an integral structure.

9. The battery device according to claim 6, characterized in that, Along the direction in which the stationary contact (120) extends out of the first opening (111a1), the snap-fit ​​groove (123a) is located on the side of the support (121) away from the insulating body (111).

10. The battery device according to claim 6, characterized in that, The maximum dimension of the extension (112) along the axial direction of the first opening (111a1) is greater than the maximum dimension of the support (121) along the axial direction of the first opening (111a1).

11. The battery device according to claim 10, characterized in that, The stationary contact (120) includes: The first part (122), one end of which extends out and is disposed in the first opening (111a1); and The second part (123) is connected to the end of the first part (122) that extends out of the first opening (111a1); The radial dimension of the second part (123) is greater than that of the first part (122), and the snap-fit ​​groove (123a) is provided in the second part (123).

12. The battery device according to claim 11, characterized in that, One end of the support (121) is connected to the side surface of the second part (123) facing the insulating body (111), and the other end of the support (121) is connected to the insulating body (111).

13. The battery device according to claim 11, characterized in that, The maximum dimension h1 of the snap-fit ​​portion (112a) along the first direction and the maximum dimension h2 of the second portion (123) along the first direction satisfy the following condition: 0.1h2≤h1≤0.5h2; The first direction is the direction from the first part (122) to the second part (123).

14. The battery device according to claim 13, characterized in that, The maximum dimension h1 of the snap-fit ​​portion (112a) along the first direction and the maximum dimension h2 of the second portion (123) along the first direction satisfy the following condition: 0.1h2≤h1≤0.2h2.

15. The battery device according to claim 11, characterized in that, The dimension d1 of the snap-fit ​​portion (112a) along the second direction and the dimension d2 of the second portion (123) along the second direction satisfy the following condition: 0.2d²≤d¹≤(2 / 3)d²; The second direction is the side where the bottom wall of the snap-fit ​​groove (123a) faces the opening.

16. The battery device according to any one of claims 2-5, characterized in that, The dimension d3 of the extension (112) along the second direction satisfies the following condition: d3≥0.5mm; The second direction is the side where the bottom wall of the snap-fit ​​groove (123a) faces the opening.

17. The battery device according to any one of claims 2-5, characterized in that, The snap-fit ​​portion (112a) is constructed with a plurality of snap-fit ​​protrusions (112a1), which are spaced apart along the extension direction of the extension portion (112).

18. The battery device according to claim 1, characterized in that, The snap-fit ​​groove (123a) is configured to be arranged at least partially around the axis of the first opening (111a1).

19. The battery device according to claim 1, characterized in that, The snap-fit ​​portion (112a) and the snap-fit ​​groove (123a) are in clearance fit.

20. The battery device according to claim 19, characterized in that, The gap d4 between the snap-fit ​​part (112a) and the snap-fit ​​groove (123a) satisfies the following condition: 0.02mm≤d4≤0.5mm.

21. The battery device according to claim 1, characterized in that, The bottom wall of the snap-fit ​​groove (123a) is arranged in a gradually expanding structure facing the opening side; The shape of the snap-fit ​​groove (123a) is adapted to the shape of the snap-fit ​​part (112a).

22. The battery device according to any one of claims 1-5, 7-15, and 18-21, characterized in that, The snap-fit ​​portion (112a) is configured to at least partially surround the axis of the first opening (111a1).

23. The battery device according to any one of claims 1-5, 7-15, and 18-21, characterized in that, The relay (1000) also includes at least one moving contact (130); The moving contact (130) is disposed in the first receiving cavity (111a), and the moving contact (130) is capable of moving closer to or further away from the stationary contact (120) in a first direction; The first direction is the direction from the stationary contact (120) to the moving contact (130).

24. The battery device according to claim 23, characterized in that, The relay (1000) also includes: The base assembly (140) includes an electromagnet electrically connected to the moving contact (130); the electromagnet is used to drive the moving contact (130) to move closer to or further away from the stationary contact (120) in the first direction. The housing (150) is mounted on the base assembly (140) and has a second receiving cavity (151) having a second opening (151a); the moving contact (130) and the insulating body (111) are housed in the second receiving cavity (151); the stationary contact (120) extends out from the moving contact (130) through the second opening (151a).

25. The battery device according to any one of claims 1-5, 7-15, and 18-21, characterized in that, The relay (1000) is mounted on the housing (210); or The battery device also includes an electrical compartment; The electrical compartment is spaced apart from the housing (210); the relay (1000) is installed on the electrical compartment.

26. A relay, characterized in that, The relay includes: An insulating cover (110) includes an insulating body (111) having a first receiving cavity (111a); and A stationary contact (120) is disposed in the first receiving cavity (111a), and one end of the stationary contact (120) extends out through a first opening (111a1) communicating with the first receiving cavity (111a); The stationary contact (120) is provided with a snap-fit ​​groove (123a), and the insulating cover (110) is provided with a snap-fit ​​part (112a) that can snap into the snap-fit ​​groove (123a).

27. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1-25, wherein the battery device is used to provide electrical energy to the electrical device.

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