Battery device, protector and electric equipment

Abstract

The utility model discloses a battery device, a protector and electric equipment, and relates to the technical field of battery devices. The battery device comprises a box body, a battery monomer group and an electric control module, the electric control module comprises a protector used for being connected into a high-voltage circuit, and the protector is connected with the battery monomer group through an electric connecting piece. The protector comprises a fixing piece, a main body piece and an elastic driving piece, and the fixing piece is fixed in the box body and connected with the main body piece in a sleeving mode in the first direction; the main body piece is connected with the battery monomer group through an electric connecting piece; one of the fixing piece and the main body piece is provided with a clamping groove, and the other one is provided with a limiting part; at least two clamping grooves and / or limiting parts are arranged in the first direction; the elastic driving piece is arranged on one of the main body piece and the fixing piece, abuts against the other one of the main body piece and the fixing piece in the direction forming an included angle with the first direction, and enables the at least one limiting part to be selectively clamped into the at least one clamping groove. According to the technical scheme of the invention, the problem of height error of the locking interface of the electric connector of the protector can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery devices and equipment, and in particular to a battery device, a protector and an electrical device. Background Art

[0002] A protector, such as a fuse or a relay, is usually provided in a battery device. When the protector is installed in a box of the battery device, its bottom is usually fixed to the box first. However, due to production errors or assembly errors, the height error of the locking position of the electrical connector on the top of the protector may occur, which may cause stress at the locking position of the electrical connector, resulting in a risk of increased impedance between the electrical connector and the locking interface. Utility Model Content

[0003] The main purpose of the present application is to provide a battery device, a protector and an electrical device, aiming to improve the problem of height error at the locking interface of the electrical connector of the protector.

[0004] To achieve the above-mentioned purpose, the battery device proposed in the present application includes a box, a battery cell group and an electric control module, wherein the electric control module is arranged in the box, and the electric control module includes a protector, which is used to access the high-voltage circuit and is connected to the battery cell group through an electric connector. The protector includes a fixing member, a main body and an elastic driving member, wherein the fixing member is fixed in the box; the main body is connected to the battery cell group through the electric connector; the fixing member and the main body are sleeved in a first direction, one of the fixing member and the main body is provided with a slot, and the other of the fixing member and the main body is provided with a limiting portion; at least two of the slots and / or the limiting portions are provided in the first direction; the elastic driving member is arranged in one of the main body and the fixing member, and abuts against the other of them in a direction at an angle to the first direction, and at least one of the limiting portions is selectively inserted into at least one of the slots to adjust the assembly error when the main body is assembled and connected with the electric connector in the first direction.

[0005] The technical solution of the present application is to arrange the electric control module in the box, and the electric control module includes a protector, which is used to access the high-voltage circuit and is connected to the battery cell group through an electrical connector. Then, the battery cell group can be protected by the protector, reducing the risk of current overload of the battery cell group. By arranging the protector in the box of the battery device, the box has a good protection effect on the protector. The protector includes a fixing member and a main body sleeved along a first direction, one of the fixing member and the main body is provided with a slot, and the other of the fixing member and the main body is provided with a limiter. In the process of mutual sleeve connection between the fixing member and the main body, the limiter can be inserted into the slot, so that the fixing member and the main body can be firmly connected. By providing at least two slots and / or limiters in the first direction, the effect of adjusting the position of the main body in the first direction can be achieved, and then the height of the side of the protector away from the bottom end of the fixing member can be adjusted, so as to improve the problem of height error of the electric connector locking interface where the main body of the protector is connected to the electric connector.

[0006] In addition, by providing an elastic driving member, the elastic driving member is provided on one of the main body member and the fixing member, and abuts against the other one along a direction forming an angle with the first direction. Under the elastic force of the elastic driving member, at least one limiting portion can be inserted into at least one slot. Then, when the limiting portion moves to the opening of the corresponding slot, it can be automatically inserted into the slot, thereby reducing the step of manually pushing the limiting portion into the corresponding slot and improving the assembly efficiency of the fixing member and the main body member.

[0007] In an embodiment of the present application, the elastic driving member is an elastic arm.

[0008] Such an arrangement makes the structure of the elastic driving member relatively simple, thereby facilitating the improvement of the production efficiency and the installation efficiency of the elastic driving member, and also reducing the cost of the elastic driving member.

[0009] In one embodiment of the present application, a side wall of one of the fixing member and the main body member on which the elastic arm is provided is provided with a mounting opening, and one end of the elastic arm is connected to an inner wall of the mounting opening.

[0010] By configuring in this way, the space occupied by one of the fixing member and the main body member provided with the elastic arm can be reduced, thereby reducing the volume of the entire protector.

[0011] In one embodiment of the present application, the elastic arm includes an extension section and an elastic section, the extension section is connected to the inner wall of the mounting port; the elastic section is connected to the extension section at an angle and elastically supports the fixing member and one of the main body members that is not provided with the slot.

[0012] Such an arrangement can improve the connection strength between the elastic arm and the inner wall of the installation opening, and at the same time drive the limiting portion to be inserted into the corresponding slot, thereby achieving a good connection effect between the fixing member and the main body.

[0013] In one embodiment of the present application, one of the fixing member and the main body member that is provided with the card slot is also provided with an insertion channel, the insertion channel extends along the first direction, the card slot is provided with at least two and is arranged in the first direction, and at least two of the card slots arranged in the first direction are connected to the insertion channel; the elastic expansion and contraction direction of the elastic driving member is the second direction, the second direction is set at an angle to the first direction, and the second direction is the direction from the insertion channel to the card slot.

[0014] With such a configuration, the limiting part can be automatically inserted into the corresponding slot under the elastic force of the elastic driving member during or after the sliding process in the insertion channel, thereby achieving a better positioning effect between the fixing member and the main member. In addition, the effect of adjusting the sleeve position of the main member relative to the fixing member can be achieved.

[0015] In one embodiment of the present application, the elastic driving member has a first state and a second state. When the elastic driving member is in the first state, the limiting portion is located in the insertion channel and can slide along the first direction. When the elastic driving member is in the second state, the limiting portion is inserted into the slot.

[0016] With such a configuration, the limiting portion can slide in the first direction in the insertion channel, so that the limiting portion can slide to a position corresponding to different card slots, so as to achieve the effect of adjusting the engagement height of the limiting portion. In addition, under the elastic force of the elastic driving member, the limiting portion can be stably inserted into the card slot, reducing the risk of the limiting portion easily falling out of the card slot.

[0017] In one embodiment of the present application, the card slot is in the shape of an elongated strip, the extending direction of the card slot is the second direction, one end of the card slot is connected to the plug-in channel, and the other end is provided with a stop wall.

[0018] Such an arrangement can reduce the risk that the limiting portion moves excessively and falls out of the slot under the driving action of the elastic driving member.

[0019] In one embodiment of the present application, the limiting portion can be inserted into the card slot after being translated a first distance from the insertion channel.

[0020] Such a configuration can, on the one hand, facilitate the operation of inserting the limiting portion into the slot, and on the other hand, can reduce the risk of the limiting portion slipping out of the fixing member through the insertion channel.

[0021] In one embodiment of the present application, one of the fixing member and the main member in which the card slot is provided has a first side wall and a second side wall that are arranged opposite to each other, and both the first side wall and the second side wall are provided with the card slot.

[0022] Such an arrangement ensures that the forces on the two sides are relatively balanced after the main body and the fixing member are connected.

[0023] In one embodiment of the present application, the card slots of the first side wall and / or the card slots of the second side wall are arranged in at least two rows, and at least two card slots in each row are arranged at intervals along the first direction.

[0024] Such an arrangement reduces the movement stroke of the limiting part and improves the assembly efficiency of the fixing member and the main body.

[0025] In one embodiment of the present application, the protector further includes an elastic support member, which elastically extends along the first direction, and one end of the elastic support member is connected to the fixing member, and the other end is connected to the main body.

[0026] Such an arrangement provides a good supporting effect on the limiting portion, thereby reducing the risk of the limiting portion slipping out of the slot.

[0027] In an embodiment of the present application, the fixing member is provided with a protruding fixing portion, and the fixing portion is fixedly connected to the box body.

[0028] Such arrangement enables the fixing part to be exposed, thereby facilitating the connection between the fixing part and the box body. The fixing part is fixedly connected to the box body, thus ensuring that the protector can be firmly connected to the box body.

[0029] In one embodiment of the present application, an electrical connector locking interface is provided at one end of the main body away from the fixing member for conductive connection with the electrical connector.

[0030] Such an arrangement makes it easier to connect the main body with the electrical connector, and the main body can be electrically connected to the battery cell through the electrical connector.

[0031] In one embodiment of the present application, the protector is a relay.

[0032] With such an arrangement, the device can be actively disconnected when the current is too large, thereby cutting off the high-voltage circuit in which it is located, thereby achieving an effect of effectively protecting the circuit.

[0033] The present application also proposes a protector, which includes a fixing member, a main body and an elastic driving member, wherein the fixing member is sleeved with the main body along a first direction, one of the fixing member and the main body is provided with a slot, and the other of the fixing member and the main body is provided with a limiting portion; at least two of the slots and / or the limiting portions are provided in the first direction; the elastic driving member is provided on one of the main body and the fixing member, and abuts against the other of them along a direction forming an angle with the first direction, and allows at least one of the limiting portions to be selectively inserted into at least one of the slots.

[0034] The protector in the present application includes a fixing member and a main body that are sleeved in a first direction, one of the fixing member and the main body is provided with a slot, and the other of the fixing member and the main body is provided with a limiting portion. In the process of the fixing member and the main body being sleeved together, the limiting portion can be inserted into the slot, thereby achieving a stable connection between the fixing member and the main body. By providing at least two slots and / or limiting portions in the first direction, the effect of adjusting the position of the main body in the first direction can be achieved, thereby adjusting the height of the side of the protector away from the bottom end of the fixing member, and improving the problem of height error in the locking interface of the electrical connector of the protector.

[0035] In addition, by providing an elastic driving member, the elastic driving member is provided on one of the main body member and the fixing member, and abuts against the other one along a direction forming an angle with the first direction. Under the elastic force of the elastic driving member, at least one limiting portion can be inserted into at least one slot. Then, when the limiting portion moves to the opening of the corresponding slot, it can be automatically inserted into the slot, thereby reducing the step of manually pushing the limiting portion into the corresponding slot and improving the assembly efficiency of the fixing member and the main body member.

[0036] The present application also provides an electrical device, comprising the above-mentioned battery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0038] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0039] Figure 2 A schematic diagram of the exploded structure of a battery device according to some embodiments of the present application;

[0040] Figure 3A schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application;

[0041] Figure 4 This is a schematic diagram of the exploded structure of the protector of some embodiments of the present application;

[0042] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0043] Figure 6 A top view of a protector according to some embodiments of the present application;

[0044] Figure 7 for Figure 6 Sectional view at the middle BB;

[0045] Figure 8 This is a cross-sectional view of a fixing member in a protector according to some embodiments of the present application.

[0046] Description of Figure Numbers:

[0047] 1000. Vehicles;

[0048] 100, battery device; 200, controller; 300, motor;

[0049] 10. Box body; 11. First part; 12. Second part; 101. First installation cavity; 102. Second installation cavity;

[0050] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Shell; 23. Cell assembly; 23a. Tab;

[0051] 30. Protector; 31. Fixing member; 311. First side wall; 312. Second side wall; 313. Stop wall; 31a. Card slot; 31b. Insertion channel; 31c. Fixing part; 31d. Mounting port; 32. Main body; 321. Electrical connector locking interface; 322. Position limiting part; 33. Elastic supporting member; 34. Elastic driving member; 341. Extension section; 342. Elastic section;

[0052] 40. Electrical connectors;

[0053] X, first direction;

[0054] Y, second direction.

[0055] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0058] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0059] The embodiment of the present application provides an electric device using a battery device as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0060] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device in an embodiment of the present application.

[0061] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0062] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0063] Please refer to Figure 2 , Figure 2 An exploded view of a battery device 100 provided in some embodiments of the present application. The battery device 100 includes a housing 10, a battery cell 20 and an electronic control module, wherein the battery cell 20 and the electronic control module are both contained in the housing 10. The housing 10 is used to provide a storage space for the battery cell 20 and the electronic control module, and the housing 10 may adopt a variety of structures. In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, wherein the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 jointly define a storage space for accommodating the battery cell 20 and the electronic control module. The second portion 12 may be a hollow structure with one end open, and the first portion 11 may be a plate-like structure, and the first portion 11 covers the open side of the second portion 12, so that the first portion 11 and the second portion 12 jointly define a storage space; the first portion 11 and the second portion 12 may also be hollow structures with one side open, and the open side of the first portion 11 covers the open side of the second portion 12. Of course, the box body 10 formed by the first part 11 and the second part 12 can be in various shapes, such as a cylinder, a cuboid, etc.

[0064] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0065] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0066] Please refer to Figure 3 , Figure 3 The following is a schematic diagram of the exploded structure of a battery cell 20 provided in some embodiments of the present application. The battery cell 20 refers to the smallest unit that constitutes a battery device. Figure 3 The battery cell 20 includes an end cover 21, a shell 22, a battery cell assembly 23 and other functional components.

[0067] The end cap 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the shell 22 to match the shell 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 21 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 21a can be provided on the end cap 21. The electrode terminal 21a can be used to electrically connect to the battery cell assembly 23 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 21 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 21, and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0068] The shell 22 is a component used to cooperate with the end cover 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the battery cell assembly 23, electrolyte and other components. The shell 22 and the end cover 21 can be independent components, and an opening can be set on the shell 22, and the internal environment of the battery cell 20 is formed by covering the opening with the end cover 21 at the opening. Without limitation, the end cover 21 and the shell 22 can also be integrated. Specifically, the end cover 21 and the shell 22 can form a common connection surface before other components are put into the shell, and when the interior of the shell 22 needs to be encapsulated, the end cover 21 covers the shell 22. The shell 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 22 can be determined according to the specific shape and size of the battery cell assembly 23. The material of the shell 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0069] The battery cell assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more battery cell assemblies 23 may be contained in the housing 22. The battery cell assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the battery cell assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a tab 23a. The positive tab and the negative tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery device, the positive active material and the negative active material react with the electrolyte, and the tab 23a connects the electrode terminals to form a current loop.

[0070] The electric control module includes a protector, for example, the protector includes a fuse and / or a relay, etc., so as to be electrically connected to the battery cell 20 or the battery module through the electric connector, so as to protect and control the battery cell 20. When the protector in the electric control module is fixedly connected to the box body 10, the box body 10 may be deformed or the box body 10 may have a processing error, and the protector may have an assembly error when it is locked to the box body 10. The part of the traditional protector used to be fixed on the box body 10 and the locking position of the electric connector are usually an integrated structure. Therefore, when the above-mentioned errors exist, there may be a height error in the locking interface of the electric connector at one end of the protector away from the box body 10, so that when the electric connector is locked with the locking interface of the electric connector of the protector, there is stress at the locking interface of the electric connector, which leads to the risk of increasing the impedance between the electric connector and the locking interface of the electric connector.

[0071] In order to improve the height error problem of the protector's electrical connector locking interface, please refer to Figure 2 and Figure 4The present application proposes a battery device 100, which includes a box body 10, a battery cell group and an electronic control module. The electronic control module is arranged in the box body 10, and the electronic control module includes a protector 30. The protector 30 is used to access a high-voltage circuit and is connected to the battery cell group through an electrical connector 40. The protector 30 includes a fixing member 31, a main body 32 and an elastic driving member 34. The fixing member 31 is fixed in the box body 10; the main body 32 is connected to the battery cell group through an electrical connector 40; the fixing member 31 and the main body 32 are sleeved along the first direction X, one of the fixing member 31 and the main body 32 is provided with a card slot 31a, and the other of the fixing member 31 and the main body 32 is provided with a limit portion 322; at least two card slots 31a and / or limit portions 322 are provided in the first direction X; the elastic driving member 34 is provided on one of the main body 32 and the fixing member 31, and abuts against the other of them along a direction forming an angle with the first direction X, and enables at least one limit portion 322 to be selectively inserted into at least one card slot 31a, so as to adjust the assembly error when the main body 32 is assembled and connected with the electrical connector 40 in the first direction X.

[0072] The box 10 is used to provide a storage space for the battery cell group and the electronic control module. The box 10 may include a first part 11 and a second part 12. The first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for the battery cell group and the electronic control module. The second part 12 may be a hollow structure with one end open, and the first part 11 may be a plate-like structure. The first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 may also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box 10 formed by the first part 11 and the second part 12 may be in various shapes, such as a cylinder, a cuboid, etc.

[0073] A battery cell group refers to an assembly formed by connecting a number of battery cells 20 in series, in parallel or in mixed connection. The electric control module is used to control the input and output signals of the battery cell group. The electric control module may include a control board, input terminals and output terminals, etc. In the present application, the electric control module includes a protector 30, which may be a fuse or a relay, etc. In order to achieve a fixing effect on the protector 30, the protector 30 is usually installed in the box 10 by means of screw connection, clamping or welding.

[0074] The fixing member 31 refers to a component in the protector 30 that is fixedly connected to the box body 10. The fixing member 31 may be a cylindrical body or a columnar body. Specifically, the fixing member 31 in the protector 30 may be connected to the box body 10. The fixing member 31 may be connected to the box body 10 by threaded connection, clamping or welding.

[0075] The main body 32 is a part that mainly serves as electrical protection. The main body 32 includes an insulating sleeve and a conductive member disposed in the insulating sleeve. One end of the conductive member extends out of the insulating sleeve to be electrically connected to the electrical connector 40, and then electrically connected to the battery cell group through the electrical connector 40. When the main body 32 is connected to the fixing member 31, the end of the main body 32 that is not connected to the electrical connector 40 is connected to the fixing member 31, so that the electrical connector locking interface 321 of the main body 32 can be exposed and convenient for connection with the electrical connector 40.

[0076] When the fixing member 31 and the main body 32 are sleeved along the first direction X, one of the fixing member 31 and the main body 32 may be sleeve-shaped, and the other may be a columnar body. In one example, the fixing member 31 is sleeve-shaped, and the main body 32 is a columnar body, so that the main body 32 can be inserted into the fixing member 31 along the first direction X. For example, when the fixing member 31 is cylindrical, the main body 32 may be a cylinder or other prisms. Or when the fixing member 31 is a rectangular tube, the main body 32 may be cylindrical or prism-shaped. The shape of the main body 32 may be adapted to the shape of the fixing member 31, or it may be different. In another example, the fixing member 31 is a columnar body, and at least a portion of the main body 32 may be a cylindrical body, so that the fixing member 31 may be inserted into the main body 32 along the first direction X. The cylindrical body of the main body 32 for the fixing member 31 to be inserted can be cylindrical, and the fixing member 31 can be cylindrical or prism-shaped; or the cylindrical body of the main body 32 for the fixing member 31 to be inserted can be rectangular, and the fixing member 31 can be prism-shaped or cylindrical, as long as the fixing member 31 can be mutually sleeved with the main body 32. The first direction X refers to the direction in which the fixing member 31 and the main body 32 are mutually inserted when the fixing member 31 and the main body 32 are sleeved.

[0077] The slot 31a may be a through hole or a blind hole structure. The slot 31a may be provided on the fixing member 31 or on the main member 32. The slot 31a may be a slot structure in the shape of a strip, a square or other shapes.

[0078] The limiting portion 322 refers to a structure that can cooperate with the slot 31a in a limiting manner. For example, when the slot 31a is a through hole or a blind hole, the limiting portion 322 can be a convex structure such as a limiting block, a limiting strip or a limiting column. The limiting portion 322 can also be provided on the fixing member 31 or on the main member 32. However, it should be noted that when the slot 31a is provided on the fixing member 31, the limiting portion 322 is provided on the main member 32; when the slot 31a is provided on the main member 32, the limiting portion 322 is provided on the fixing member 31. Based on the fact that the fixing member 31 is a sleeve structure, if the slot 31a is provided on the fixing member 31, the slot 31a can be provided on the inner side wall of the sleeve, that is, the slot 31a is provided on the inner wall of the sleeve, and at least two slots 31a can be provided at intervals in the axial direction of the sleeve; the limiting portion 322 can be provided on the outer side wall of the main member 32 in a columnar structure. Based on the fact that the fixing member 31 is a columnar structure, if the slot 31a is provided on the fixing member 31, the slot 31a can be provided on the outer side wall of the fixing member 31, and the limiting portion 322 can be provided on the inner side wall of the fixing member 31 in a sleeve shape. The limiting portion 322 can be provided with one, two or more. When there are at least two limiting portions 322, at least two limiting portions 322 can be distributed on two opposite sides of the fixing member 31 or the main body 32, and at least two rows of slots 31a are provided correspondingly, and the two rows of slots 31a are distributed on two opposite sides of the main body 32 or the fixing member 31, and at least two slots 31a are provided at intervals on each side in the first direction X.

[0079] The elastic driving member 34 may be a simple spring or spring structure; or the elastic driving member 34 may include an elastic portion and a spherical structure connected to the elastic portion, and the elastic portion may be a spring or a spring. As long as the elastic driving member 34 can drive the limiting portion to snap into the slot during the mutual sleeve connection between the main member 32 and the fixing member 31, the elastic driving member 34 may be arranged on the fixing member 31 or on the main member 32. Specifically, taking the example of the slot 31a being arranged on the fixing member 31, the elastic driving member 34 can be arranged on the side wall of the fixing member 31 opposite to the slot 31a, or can be arranged on the side of the main body 32 away from the slot 31a. The elastic expansion and contraction direction of the elastic driving member 34 can be perpendicular to the first direction X, or its elastic expansion and contraction direction can also be set at an acute angle or an obtuse angle to the first direction X, so that when the main body 32 and the fixing member 31 are sleeved along the first direction X, the main body 32 compresses the elastic driving member 34 in a direction at an angle to the first direction X. When the limiting portion 322 on the main body 32 is parallel to the corresponding slot 31a, the main body 32 can be loosened so that the elastic driving member 34 provides elastic force and drives the limiting portion 322 of the main body 32 to be inserted into the corresponding slot 31a, thereby achieving the connection effect between the main body 32 and the fixing member 31. Of course, in other examples, taking the slot 31a being provided on the fixing member 31 as an example, the fixing member 31 is also provided with an insertion channel 31b for the limiting portion 322 to move in the first direction X, the slot 31a can be a strip-shaped hole structure or a groove structure, and the extension direction of the slot 31a is set at an angle to the first direction X, the elastic expansion and contraction direction of the elastic driving member 34 can be set to be consistent with the extension direction of the slot 31a, or it can be set to be inconsistent with the extension direction of the slot 31a on the basis of being at an angle to the first direction X, so that when the limiting portion 322 slides a distance in the insertion channel 31b and is aligned with the corresponding slot 31a, it can further slide along the extension direction of the slot 31a under the elastic force of the elastic driving member 34 to the end of the slot 31a away from the insertion channel 31b, thereby achieving the effect that the limiting portion 322 is inserted into the slot 31a and is not easily removed from the insertion channel 31b.

[0080] The technical solution of the present application is to arrange the electric control module in the box 10, and the electric control module includes a protector 30. The protector 30 is used to access the high-voltage circuit and is connected to the battery cell group through the electrical connector 40. Then, the battery cell group can be protected by the protector 30, reducing the risk of current overload of the battery cell group. By arranging the protector 30 in the box 10 of the battery device 100, the box 10 has a good protection effect on the protector 30. The protector 30 includes a fixing member 31 and a main body 32 sleeved along the first direction X. One of the fixing member 31 and the main body 32 is provided with a card slot 31a, and the other of the fixing member 31 and the main body 32 is provided with a limiter 322. In the process of mutual sleeve connection between the fixing member 31 and the main body 32, the limiter 322 can be inserted into the card slot 31a, so that the fixing member 31 and the main body 32 can be firmly connected. In addition, by providing at least two slots 31a and / or limit portions 322 in the first direction X, the same limit portion 322 can be matched with different slots 31a, or the same slot 31a can be matched with different limit portions 322, so as to achieve the effect of adjusting the position of the main body 32 in the first direction X, and then adjust the height of the side of the protector 30 away from the bottom end of the fixing member 31, improve the problem of height error of the electrical connector locking interface 321 used by the main body 32 of the protector 30 to connect with the electrical connector 40, and then adjust the assembly error when the main body 32 is assembled and connected with the electrical connector 40 in the first direction X, reduce the stress at the locking position of the electrical connector 40, and achieve the effect of reducing the impedance risk between the electrical connector 40 and the electrical connector locking interface 321. In addition, by providing an elastic driving member 34, the elastic driving member 34 is provided on one of the main body member 32 and the fixing member 31, and abuts against the other one along a direction forming an angle with the first direction X. Under the elastic force of the elastic driving member 34, at least one limiting portion 322 can be inserted into at least one slot 31a. Then, when the limiting portion 322 moves to the opening of the corresponding slot 31a, it can be automatically inserted into the slot 31a, thereby reducing the step of manually pushing the limiting portion 322 into the corresponding slot 31a, and improving the assembly efficiency of the fixing member 31 and the main body member 32.

[0081] like Figure 4 As shown, in one embodiment of the present application, the elastic driving member 34 is an elastic arm.

[0082] The elastic arm refers to a cantilever structure. When the cantilever structure is supported, the cantilever can be bent and deformed to provide an elastic supporting force. It can be arranged on the fixing member 31 or on the main member 32, as long as the elastic arm can make the limit portion 322 snap into the corresponding slot 31a under the action of elastic force. The elastic arm can be integrally formed on the fixing member 31 or the main member 32, or the elastic arm can be connected to the fixing member 31 or the main member 32 by screw connection, welding, clamping, etc.

[0083] By configuring the elastic driving member 34 as an elastic arm, the structure of the elastic driving member 34 is relatively simple, thereby facilitating improving the production efficiency and installation efficiency of the elastic driving member 34 and reducing the cost of the elastic driving member 34 .

[0084] like Figure 4 As shown, in one embodiment of the present application, a side wall of one of the fixing member 31 and the main body 32 having an elastic arm is provided with an installation opening 31d, and one end of the elastic arm is connected to the inner wall of the installation opening 31d.

[0085] The installation opening 31d refers to an opening for installing the elastic arm, and the installation opening 31d can be circular, rectangular or other shapes.

[0086] By connecting one end of the elastic arm to the inner wall of the mounting opening 31d, the space occupied by one of the fixing member 31 and the main member 32 where the elastic arm is provided can be reduced, thereby reducing the volume of the entire protector.

[0087] Of course, it is understandable that, without considering the space occupied by the protector 30, it is also possible not to open the installation port 31d on the side wall of one of the fixing member 31 and the main member 32 on which the elastic arm is provided. Instead, the elastic arm can be directly connected to the side wall of the fixing member 31 or the main member 32, for example, by welding, screw connection, clamping or one-piece molding.

[0088] Based on the solution that one of the fixing member 31 and the main body member 32 that is provided with the elastic arm is provided with the installation opening 31d, in one embodiment of the present application, as Figure 4 As shown, the elastic arm includes an extension section 341 and an elastic section 342. The extension section 341 is connected to the inner wall of the installation opening 31d; the elastic section 342 is connected to the extension section 341 at an angle and elastically supports the fixing member 31 and the main member 32 where the slot 31a is not provided.

[0089] The extension section 341 is a section connected to the inner wall of the installation opening 31d, and the extension section 341 may extend along the first direction X, or may extend along a direction that is an acute angle or an obtuse angle with the first direction X. In order to ensure that the main body 32 and the fixing member 31 are more smoothly sleeved, when the extension section 341 is connected to the inner wall of the installation opening 31d, the end of the extension section 341 that is not connected to the inner wall of the installation opening 31d may extend toward the first direction X. The extension section 341 may be welded, threaded, or clamped to the inner wall of the installation opening 31d.

[0090] The elastic section 342 is a section that mainly elastically resists the one of the fixing member 31 and the main member 32 that is not provided with the slot 31a. When the elastic section 342 is connected to the extension section 341 at an angle, it can be connected to the extension section 341 at an acute angle or an obtuse angle, as long as the elastic section 342 can resist the one of the fixing member 31 and the main member 32 that is not provided with the slot 31a so that the limiting portion 322 can be inserted into the corresponding slot 31a.

[0091] By providing an extension section 341 and connecting the extension section 341 to the inner wall of the installation opening 31d, the connection strength between the elastic arm and the inner wall of the installation opening 31d can be improved, and the risk of the elastic arm breaking at the connection with the installation opening 31d during the elastic deformation process can be reduced. By providing an elastic section 342 connected at an angle to the extension section 341, the elastic section 342 can provide elastic force for the one of the fixing member 31 and the main member 32 that is not provided with the slot 31a, so as to drive the limiting portion 322 and the corresponding slot 31a to approach each other, and finally make the limiting portion 322 snap into the corresponding slot 31a, so as to achieve a good connection effect between the fixing member 31 and the main member 32.

[0092] Please refer to Figures 4 to 8 In one embodiment of the present application, one of the fixing member 31 and the main body member 32 having the card slot 31a is also provided with an insertion channel 31b, the insertion channel 31b extends along the first direction X, at least two card slots 31a are provided and arranged in the first direction X, and at least two card slots 31a arranged in the first direction X are connected to the insertion channel 31b; the elastic expansion and contraction direction of the elastic driving member 34 is the second direction Y, the second direction Y is set at an angle to the first direction X, and the second direction Y is the direction from the insertion channel 31b to the card slot 31a.

[0093] The plug-in channel 31b refers to a channel for the limiting portion 322 to be inserted and slide. The cross-sectional shape of the plug-in channel 31b can be adapted to the shape of the limiting portion 322, or can be different from the shape of the limiting portion 322. Taking the solution in which the fixing member 31 is sleeve-shaped and the fixing member 31 is provided with a card slot 31a as an example, the plug-in channel 31b can be a channel opened on the inner side wall of the fixing member 31, or at least two ribs distributed in the circumferential direction of the fixing member 31 are protruded on the inner side wall of the fixing member 31, and the ribs extend along the first direction X, and the space between the two ribs forms the plug-in channel 31b. It should be noted that as long as the limiting portion 322 can slide along the first direction X in the plug-in channel 31b during the sleeve connection between the fixing member 31 and the main body 32, it is sufficient. It can be understood that when at least two slots 31a arranged in the first direction X are connected to the insertion channel 31b, when the fixing member 31 is plugged into the main body 32, the limiting portion 322 can first slide in the insertion channel 31b along the first direction X, and then when the limiting portion 322 slides to the corresponding connecting port between the slot 31a and the insertion channel 31b, since the elastic expansion and contraction direction of the elastic driving member 34 is the second direction Y, the second direction Y is set at an angle to the first direction X, and the second direction Y is the direction from the insertion channel 31b to the slot 31a, the elastic driving member 34 can automatically drive the limiting portion 322 located in the insertion channel 31b to slide into the corresponding slot 31a, and move in the slot 31a in a direction away from the insertion channel 31b, thereby making the limiting portion 322 more stably inserted into the corresponding slot 31a.

[0094] By extending the insertion channel 31b along the first direction X, the limiting portion 322 can slide in the insertion channel 31b along the first direction X during the sleeve connection between the fixing member 31 and the main member 32, thereby providing an escape space for the limiting portion 322 and reducing the risk of wear of the limiting portion 322. In addition, by connecting at least two card slots 31a arranged along the first direction X to the insertion channel 31b, the elastic expansion direction of the elastic driving member 34 is the second direction Y, the second direction Y is set at an angle with the first direction X, and the second direction Y is the direction from the insertion channel 31b to the card slot 31a, so that during the sleeve connection between the fixing member 31 and the main member 32, the limiting portion 322 can slide in the insertion channel 31b or after the sliding is completed, and can also automatically snap into the corresponding card slot 31a under the elastic force of the elastic driving member 34, thereby achieving a better positioning effect between the fixing member 31 and the main member 32. Moreover, such a configuration can also enable the limiting portion 322 to selectively fit into any one of at least two slots 31 a arranged in the first direction X, thereby achieving an effect of being able to adjust the socket position of the main component 32 relative to the fixing component 31 .

[0095] Please refer to Figures 4 to 8In one embodiment of the present application, the elastic driving member 34 has a first state and a second state. When the elastic driving member 34 is in the first state, the limit portion 322 is located in the insertion channel 31b and can slide along the first direction X. Figure 7 and Figure 8 , the elastic driving member 34 is in the second state, and the limiting portion 322 is inserted into the slot 31 a.

[0096] The first state may be that the elastic driving member 34 is in a compressed state or in a stretched state. When the elastic driving member 34 is in the first state, the limiting portion 322 is located in the insertion channel 31b and can slide along the first direction X. The limiting portion 322 and the insertion channel 31b are in a clearance fit, that is, the width of the insertion channel 31b is larger than the width of the limiting portion 322.

[0097] The second state may be that the elastic driving member 34 is in a stretched state or in a compressed state. It should be noted that the states of the elastic driving member 34 in the first state and the second state are different. For example, when the elastic driving member 34 is in a compressed state in the first state, the elastic driving member 34 is in a stretched state in the second state; when the elastic driving member 34 is in a stretched state in the first state, the elastic driving member 34 is in a compressed state in the second state.

[0098] By making the limit portion 322 located in the insertion channel 31b when the elastic driving member 34 is in the first state, the limit portion 322 can slide in the insertion channel 31b along the first direction X, so that the limit portion 322 can slide to a position corresponding to different slots 31a, so as to achieve the effect of adjusting the engagement height of the limit portion 322. By making the limit portion 322 snap into the slot 31a when the elastic driving member 34 is in the second state, the limit portion 322 can be stably snapped into the slot 31a under the elastic force of the elastic driving member 34, thereby reducing the risk of the limit portion 322 easily falling out of the slot 31a.

[0099] Please refer to Figure 4 and Figure 5 In one embodiment of the present application, the card slot 31a is in an elongated strip shape, the extending direction of the card slot 31a is the second direction Y, one end of the card slot 31a is connected to the insertion channel 31b, and the other end is provided with a stop wall 313.

[0100] The stop wall 313 refers to a wall surface used to stop the limiting portion 322 when it moves in the slot 31a toward the side away from the insertion channel 31b. The wall surface can be a plane or a curved surface. The slot 31a can be a slot structure provided on the fixing member 31 or the main member 32. In this case, the stop wall 313 formed at one end of the slot 31a away from the insertion channel 31b is a side wall of the slot structure. The slot 31a can also be formed by connecting at least two spaced-apart limiting plates arranged along the first direction X to the wall surface of the fixing member 31 or the main member 32, that is, the slot 31a is formed by the space between two adjacent limiting plates. In this case, the stop wall 313 can be detachably connected to the limiting plate, or can be integrally formed. The stop wall 313 is also an independent component connected to the wall surface of the fixing member 31 or the main member 32.

[0101] By setting the slot 31a to be long and narrow, and the extending direction of the slot 31a is the second direction Y, the limiting portion 322 can smoothly enter the slot 31a from the insertion channel 31b under the elastic force of the elastic driving member 34, and the limiting portion 322 can slide a certain distance in the slot 31a to reduce the risk of the limiting portion 322 escaping from the slot 31a and returning to the insertion channel 31b. By providing a stop wall 313 on the side of the slot 31a away from the insertion channel 31b, the stop wall 313 can limit and stop the sliding process of the limiting portion 322 in the slot 31a, thereby avoiding the risk of the limiting portion 322 sliding in the slot 31a and then slipping out of the slot 31a under the elastic force of the elastic driving member 34.

[0102] Please refer to Figure 4 and Figure 5 In one embodiment of the present application, the limiting portion 322 can be inserted into the card slot 31a after being translated a first distance from the insertion channel 31b.

[0103] The first distance can be any size greater than 0 mm. By moving the limiting portion 322 from the insertion channel 31b by the first distance before inserting it into the card slot 31a, it is easy to insert the limiting portion 322 into the card slot 31a, and it can reduce the risk of the limiting portion 322 slipping out of the fixing member 31 through the insertion channel 31b.

[0104] like Figure 4 As shown, in one embodiment of the present application, one of the fixing member 31 and the main body 32 having the card slot 31a has a first side wall 311 and a second side wall 312 arranged opposite to each other, and both the first side wall 311 and the second side wall 312 are provided with a card slot 31a.

[0105] The first side wall 311 can be in a planar shape or an arcuate shape. The second side wall 312 can also be in a planar shape or an arcuate shape. For example, when the first side wall 311 is in a planar shape, the second side wall 312 can be in a planar shape or an arcuate shape; when the first side wall 311 is in an arcuate shape, the second side wall 312 can be in an arcuate shape or a planar shape. Taking the fixing member 31 as an example in which a slot 31a is provided on the fixing member 31 and the fixing member 31 is a cylindrical body, when both the first side wall 311 and the second side wall 312 are in an arcuate shape, further, the first side wall 311 and the second side wall 312 can be enclosed together to form a cylindrical structure, or other side walls are connected between the first side wall 311 and the second side wall 312, and the first side wall 311, the second side wall 312 and the other side walls are enclosed together to form a cylindrical structure.

[0106] By providing the slots 31a on the first side wall 311 and the second side wall 312 which are arranged opposite to each other, one of the limiting parts 322 can be selectively inserted into the slot 31a provided on any one of the first side wall 311 and the second side wall 312 during the sleeve connection between the fixing member 31 and the main member 32, so as to facilitate the assembly of the two. In addition, such a configuration also enables the fixing member 31 and the main member 32 which are provided with the limiting part 322 to be provided with at least two limiting parts 322, and the at least two limiting parts 322 can be selectively inserted into the slots 31a on the first side wall 311 and the slots 31a on the second side wall 312, respectively, thereby ensuring that the fixing member 31 and the main member 32 have a more stable connection effect, and ensuring that the relative forces on the two sides after the main member 32 and the fixing member 31 are connected are relatively balanced.

[0107] like Figure 4 As shown, in one embodiment of the present application, the card slots 31a of the first side wall 311 and / or the card slots 31a of the second side wall 312 are provided in at least two rows, and each row of card slots 31a is provided with at least two slots 31a at intervals along the first direction X.

[0108] Specifically, two rows of card slots 31 a are provided only on the first side wall 311 , or two rows of card slots 31 a are provided only on the second side wall 312 , or two rows of card slots 31 a are provided on both the first side wall 311 and the second side wall 312 .

[0109] By providing at least two rows of slots 31a on the first side wall 311 and / or the second side wall 312, and each row of slots 31a is provided with two slots 31a spaced apart along the first direction X, the limiting portion 322 can be selectively inserted into any slot 31a in an adjacent row when sliding from the insertion channel 31b to the slot 31a, thereby reducing the movement stroke of the limiting portion 322 and improving the assembly efficiency of the fixing member 31 and the main body 32.

[0110] Further, one of the fixing member 31 and the main body 32 that is provided with the limiting portion 322 is provided with a third side wall and a fourth side wall opposite to each other, and both the third side wall and the fourth side wall are provided with a limiting portion 322. In this way, the limiting portions 322 on the third side wall and the fourth side wall can be respectively inserted into the corresponding slots 31a on the first side wall and the second side wall, thereby ensuring that the forces on the opposite sides of the main body 32 and the fixing member 31 are relatively balanced after being connected.

[0111] Based on the solution that one of the fixing member 31 and the main body 32 is provided with a limiting portion 322 and a third side wall and a fourth side wall relative to each other, the limiting portion 322 on the third side wall and / or the limiting portion 322 on the fourth side wall may also be provided with at least two rows correspondingly, and at least two rows of limiting portions 322 can be respectively inserted into at least two rows of slots 31a, thereby further improving the connection stability between the fixing member 31 and the main body 32.

[0112] Please refer to Figures 6 to 8 In one embodiment of the present application, the protector 30 also includes an elastic support member 33, which elastically extends along the first direction X, and one end of the elastic support member 33 is connected to the fixing member 31, and the other end is connected to the main body member 32.

[0113] The elastic support member 33 is a component used to support the main body member 32 and allow the main body member 32 to float in the first direction X. The elastic support member 33 may be a spring, a spring sheet, or a component including a spring or a spring sheet.

[0114] By elastically extending the elastic support member 33 along the first direction X, and connecting one end of the elastic support member 33 to the fixing member 31 and the other end to the main body member 32, when the main body member 32 is sleeved on the fixing member 31, the main body member 32 can compress the elastic support member 33, and then effectively snap into the corresponding slot 31a under the supporting action of the elastic support member 33, thereby reducing the risk of difficulty in aligning the limiting portion 322 with the corresponding slot 31a when the main body member 32 and the fixing member 31 are sleeved; at the same time, the elastic support member 33 also has a good supporting effect on the limiting portion 322, thereby reducing the risk of the limiting portion 322 slipping out of the slot 31a.

[0115] Please refer to Figure 4 , Figure 6 , Figure 7 as well as Figure 8 In an embodiment of the present application, the fixing member 31 is provided with a fixing portion 31 c protruding therefrom, and the fixing portion 31 c is fixedly connected to the box body 10 .

[0116] The fixing portion 31c refers to a portion of the fixing member 31 for fixing to the box body 10. The fixing portion 31c may be a lug structure or a buckle structure. When the fixing portion 31c on the fixing member 31 is fixedly connected to the box body 10, screw connection, buckle connection or welding may be used.

[0117] By protruding the fixing portion 31c on the fixing member 31, the fixing portion 31c can be exposed, thereby facilitating the connection between the fixing member 31 and the box body 10. The fixing portion 31c is fixedly connected to the box body 10, ensuring that the protector 30 can be firmly connected to the box body 10.

[0118] Please refer to Figure 2 and Figure 4 In one embodiment of the present application, an end of the main body 32 away from the fixing member 31 is provided with an electrical connector locking interface 321 for conductively connecting with the electrical connector 40 .

[0119] The electrical connector 40 refers to a connector that can conduct electricity, and can be made of copper or other metal materials as long as it can achieve a good conductive effect.

[0120] Such a configuration makes it easier for the main body 32 to be connected to the electrical connector 40 , and can be electrically connected to the battery cell 20 through the electrical connector 40 .

[0121] like Figure 2 As shown, in one embodiment of the present application, the box body 10 is provided with a first installation cavity 101 and a second installation cavity 102, the battery cell group is installed in the first installation cavity 101, the electronic control module is installed in the second installation cavity 102, and the fixing portion 31c is fixedly connected to the cavity wall of the second installation cavity 102.

[0122] The first installation cavity 101 refers to a cavity for installing a battery cell group. The first installation cavity 101 may be rectangular, circular or other special shapes. The first installation cavity 101 may be a cavity formed by a depression on the wall of the box body 10, or may be a cavity formed by adding a partition in the box body 10, between the partitions or between the partition and the inner wall of the box body 10.

[0123] The second installation cavity 102 refers to a cavity for installing the electronic control module. The first installation cavity 101 may be rectangular, circular or other special shapes. The second installation cavity 102 may be a cavity formed by a depression on the wall of the box body 10, or may be a cavity formed by adding a partition in the box body 10, between the partitions or between the partitions and the inner wall of the box body 10. The first installation cavity 101 and the second installation cavity 102 may be arranged adjacent to each other, or may be arranged at intervals by other components.

[0124] By installing the battery cell group in the first installation cavity 101 and installing the electric control module in the second installation cavity 102, the battery cell group and the electric control module are isolated from each other, thereby reducing the risk of the battery cell group affecting the electric control module after thermal runaway occurs. By fixing the fixing portion 31c to the cavity wall of the second installation cavity 102, the protector 30 is located in the second installation cavity 102, thereby reducing the impact of the battery cell group on the protector 30.

[0125] In one embodiment of the present application, the protector 30 is a relay.

[0126] By setting the protector 30 as a relay, the relay acts as a switch and can actively be in an open state when the current is too large to cut off the high-voltage circuit in which it is located, thereby achieving an effect of effectively protecting the circuit.

[0127] The present application also proposes a protector 30. The specific structure of the protector 30 refers to the above embodiment. Since the protector 30 adopts all the technical solutions of the protectors 30 in all the above embodiments, it at least has all the beneficial effects brought by the protectors 30 in the above embodiments, which will not be described one by one here. Among them, the protector 30 can be a fuse or a relay.

[0128] Specifically, the protector 30 includes a fixing member 31, a main body 32 and an elastic driving member 34. The fixing member 31 and the main body 32 are sleeved along the first direction X. One of the fixing member 31 and the main body 32 is provided with a card slot 31a, and the other of the fixing member 31 and the main body 32 is provided with a limiting portion 322; at least two card slots 31a and / or limiting portions 322 are provided in the first direction X; the elastic driving member 34 is provided on one of the main body 32 and the fixing member 31, and abuts against the other of them along a direction forming an angle with the first direction X, and allows at least one limiting portion 322 to be selectively inserted into at least one card slot 31a.

[0129] The protector 30 may be a fuse or a relay, etc. In order to achieve a fixing effect on the protector 30 , the protector 30 is usually installed in the box 10 by means of screw connection, clamping or welding.

[0130] The fixing member 31 refers to a component in the protector 30 that is fixedly connected to the box body 10. The fixing member 31 may be a cylindrical body or a columnar body, and may be connected to the box body 10 by threaded connection, clamping connection, or welding.

[0131] The main body 32 is a part that mainly serves as electrical protection. The main body 32 includes an insulating sleeve and a conductive member disposed in the insulating sleeve, one end of which extends out of the insulating sleeve to be electrically connected to the electrical connector. When the main body 32 is connected to the fixing member 31, the end of the main body 32 that is not connected to the electrical connector is connected to the fixing member 31, so that the electrical connector locking interface 321 of the main body 32 can be exposed and convenient for connection with the electrical connector.

[0132] When the fixing member 31 and the main body 32 are sleeved along the first direction X, one of the fixing member 31 and the main body 32 may be sleeve-shaped, and the other may be a columnar body. In one example, the fixing member 31 is sleeve-shaped, and the main body 32 is a columnar body, so that the main body 32 can be inserted into the fixing member 31 along the first direction X. For example, when the fixing member 31 is cylindrical, the main body 32 may be a cylinder or other prisms. Or when the fixing member 31 is a rectangular tube, the main body 32 may be cylindrical or prism-shaped. The shape of the main body 32 may be adapted to the shape of the fixing member 31, or it may be different. In another example, the fixing member 31 is a columnar body, and at least a portion of the main body 32 may be a cylindrical body, so that the fixing member 31 may be inserted into the main body 32 along the first direction X. The cylindrical body of the main body 32 for the fixing member 31 to be inserted can be cylindrical, and the fixing member 31 can be cylindrical or prism-shaped; or the cylindrical body of the main body 32 for the fixing member 31 to be inserted can be rectangular, and the fixing member 31 can be prism-shaped or cylindrical, as long as the fixing member 31 can be mutually sleeved with the main body 32. The first direction X refers to the direction in which the fixing member 31 and the main body 32 are mutually inserted when the fixing member 31 and the main body 32 are sleeved.

[0133] The slot 31a may be a through hole or a blind hole structure. The slot 31a may be provided on the fixing member 31 or on the main member 32. The slot 31a may be a slot structure in the shape of a strip, a square or other shapes.

[0134] The limiting portion 322 refers to a structure that can cooperate with the slot 31a in a limiting manner. For example, when the slot 31a is a through hole or a blind hole, the limiting portion 322 can be a convex structure such as a limiting block, a limiting strip or a limiting column. The limiting portion 322 can also be provided on the fixing member 31 or on the main member 32. However, it should be noted that when the slot 31a is provided on the fixing member 31, the limiting portion 322 is provided on the main member 32; when the slot 31a is provided on the main member 32, the limiting portion 322 is provided on the fixing member 31. Based on the fact that the fixing member 31 is a sleeve structure, if the slot 31a is provided on the fixing member 31, the slot 31a can be provided on the inner side wall of the sleeve, and at least two slots 31a can be provided at intervals in the axial direction of the sleeve; the limiting portion 322 can be provided on the outer side wall of the main member 32 of a columnar structure. Based on the fact that the fixing member 31 is a columnar structure, if the slot 31a is provided on the fixing member 31, the slot 31a can be provided on the outer side wall of the fixing member 31, and the limiting portion 322 can be provided on the inner side wall of the fixing member 31 in a sleeve shape. The limiting portion 322 can be provided with one, two or more. When there are at least two limiting portions 322, at least two limiting portions 322 can be distributed on two opposite sides of the fixing member 31 or the main body 32, and at least two rows of slots 31a are provided correspondingly, and the two rows of slots 31a are distributed on two opposite sides of the main body 32 or the fixing member 31, and at least two slots 31a are provided at intervals on each side in the first direction X.

[0135] The elastic driving member 34 may be a simple spring or spring structure; or the elastic driving member 34 may include an elastic portion and a spherical structure connected to the elastic portion, and the elastic portion may be a spring or a spring. As long as the elastic driving member 34 can drive the limiting portion to snap into the slot during the mutual sleeve connection between the main member 32 and the fixing member 31, the elastic driving member 34 may be arranged on the fixing member 31 or on the main member 32. Specifically, taking the example of the slot 31a being arranged on the fixing member 31, the elastic driving member 34 can be arranged on the side wall of the fixing member 31 opposite to the slot 31a, or can be arranged on the side of the main body 32 away from the slot 31a. The elastic expansion and contraction direction of the elastic driving member 34 can be perpendicular to the first direction X, or its elastic expansion and contraction direction can also be set at an acute angle or an obtuse angle to the first direction X, so that when the main body 32 and the fixing member 31 are sleeved along the first direction X, the main body 32 compresses the elastic driving member 34 in a direction at an angle to the first direction X. When the limiting portion 322 on the main body 32 is parallel to the corresponding slot 31a, the main body 32 can be loosened so that the elastic driving member 34 provides elastic force and drives the limiting portion 322 of the main body 32 to be inserted into the corresponding slot 31a, thereby achieving the connection effect between the main body 32 and the fixing member 31. Of course, in other examples, taking the example that the slot 31a is provided on the fixing member 31, the fixing member 31 is further provided with an insertion channel 31b for the limiting portion 322 to move in the first direction X, the slot 31a can be a strip-shaped structure, and the extension direction of the slot 31a is set at an angle with the first direction X, and the elastic expansion direction of the elastic driving member 34 can be set to be consistent with the extension direction of the slot 31a, or can be set to be inconsistent with the extension direction of the slot 31a on the basis of the angle with the first direction X, so that when the limiting portion 322 is aligned with the corresponding slot 31a after sliding a distance in the insertion channel 31b, it can further slide along the extension direction of the slot 31a to the end of the slot 31a away from the insertion channel 31b under the elastic force of the elastic driving member 34, thereby achieving the effect that the limiting portion 322 is inserted into the slot 31a and is not easy to be easily removed from the insertion channel 31b. Of course, the slot 31a can also be a circular or square structure.

[0136] The protector 30 in the technical solution of the present application includes a fixing member 31 and a main body 32 which are sleeved along a first direction X. One of the fixing member 31 and the main body 32 is provided with a card slot 31a, and the other of the fixing member 31 and the main body 32 is provided with a limiting portion 322. When the fixing member 31 and the main body 32 are sleeved together, the limiting portion 322 can be inserted into the card slot 31a, thereby achieving a stable connection between the fixing member 31 and the main body 32. In addition, by providing at least two slots 31a and / or limit portions 322 in the first direction X, the same limit portion 322 can be matched with different slots 31a, or the same slot 31a can be matched with different limit portions 322, so that the effect of adjusting the position of the main body 32 in the first direction X can be achieved, and then the height of the side of the protector 30 away from the bottom end of the fixing member 31 can be adjusted, thereby improving the problem of height error of the electrical connector locking interface 321 of the protector 30, and then reducing the stress at the locking position of the electrical connector 40, so as to achieve the effect of reducing the impedance risk between the electrical connector 40 and the electrical connector locking interface 321. In addition, by providing an elastic driving member 34, the elastic driving member 34 is provided on one of the main body member 32 and the fixing member 31, and abuts against the other one along a direction forming an angle with the first direction X. Under the elastic force of the elastic driving member 34, at least one limiting portion 322 can be inserted into at least one slot 31a. Then, when the limiting portion 322 moves to the opening of the corresponding slot 31a, it can be automatically inserted into the slot 31a, thereby reducing the step of manually pushing the limiting portion 322 into the corresponding slot 31a, and improving the assembly efficiency of the fixing member 31 and the main body member 32.

[0137] The present application also proposes an electric device. The electric device includes a battery device 100. The specific structure of the battery device 100 refers to the above embodiments. Since the electric device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Specifically, the electric device can be any of the above-mentioned devices or systems using the battery device 100.

[0138] The above are only exemplary embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include Box; Battery cell group; as well as An electric control module, the electric control module is arranged in the box, the electric control module includes a protector for accessing a high-voltage circuit, and the protector is connected to the battery cell group through an electrical connector; The protector comprises: A fixing member, wherein the fixing member is fixed in the box; a main body, wherein the main body is connected to the battery cell group through the electrical connector; the fixing member is sleeved with the main body along a first direction, one of the fixing member and the main body is provided with a slot, and the other of the fixing member and the main body is provided with a limit portion; at least two of the slots and / or the limit portions are provided in the first direction; and An elastic driving member, wherein the elastic driving member is disposed on one of the main member and the fixing member, and abuts against the other one along a direction forming an angle with the first direction, and enables at least one of the limiting portions to selectively fit into at least one of the slots, so as to adjust an assembly error when the main member is assembled and connected with the electrical connector in the first direction.

2. The battery device according to claim 1, characterized in that The elastic driving member is an elastic arm.

3. The battery device according to claim 2, characterized in that: A mounting opening is provided on the side wall of one of the fixing member and the main member on which the elastic arm is provided, and one end of the elastic arm is connected to the inner wall of the mounting opening.

4. The battery device according to claim 3, characterized in that: The elastic arm comprises: an extension section, the extension section being connected to an inner wall of the installation opening; and An elastic section is connected to the extension section at an angle and elastically abuts against the fixing member and the main body member on which the slot is not provided.

5. The battery device according to claim 1, wherein: One of the fixing member and the main member in which the card slot is provided is also provided with an insertion channel, and the insertion channel extends along the first direction. The card slots are provided with at least two and are arranged in the first direction, and at least two of the card slots arranged in the first direction are connected to the insertion channel; the elastic expansion and contraction direction of the elastic driving member is the second direction, and the second direction is set at an angle to the first direction, and the second direction is the direction from the insertion channel to the card slot.

6. The battery device according to claim 5, characterized in that The elastic driving member has a first state and a second state; When the elastic driving member is in the first state, the limiting portion is located in the plug-in channel and can slide along the first direction; When the elastic driving member is in the second state, the limiting portion is locked in the locking groove.

7. The battery device according to claim 5, characterized in that: The card slot is in the shape of an elongated strip, the extending direction of the card slot is the second direction, one end of the card slot is connected to the plug-in channel, and the other end is provided with a stop wall.

8. The battery device according to claim 7, characterized in that: The limiting portion can be inserted into the card slot after being translated from the insertion channel by a first distance.

9. The battery device according to claim 1, characterized in that: One of the fixing member and the main body member in which the card slot is disposed has a first side wall and a second side wall that are arranged opposite to each other, and both the first side wall and the second side wall are provided with the card slot.

10. The battery device according to claim 9, characterized in that The card slots on the first side wall and / or the card slots on the second side wall are arranged in at least two rows, and at least two card slots in each row are arranged at intervals along the first direction.

11. The battery device according to any one of claims 1 to 10, characterized in that: The protector further comprises an elastic support member, which elastically extends along the first direction, and one end of the elastic support member is connected to the fixing member, and the other end of the elastic support member is connected to the main body member.

12. The battery device according to any one of claims 1 to 10, characterized in that: The fixing piece is provided with a fixing portion protruding therefrom, and the fixing portion is fixedly connected to the box body; And / or, an electrical connector locking interface is provided at one end of the main body away from the fixing member for conductive connection with the electrical connector.

13. The battery device according to any one of claims 1 to 10, characterized in that: The protector is a relay.

14. A protector, characterized in that: include: Fixings; A main body, the fixing member and the main body are sleeved together along a first direction, one of the fixing member and the main body is provided with a slot, and the other of the fixing member and the main body is provided with a limit portion; at least two of the slots and / or the limit portions are provided in the first direction; and An elastic driving member is disposed on one of the main member and the fixing member, and abuts against the other one along a direction forming an angle with the first direction, and enables at least one of the limiting portions to be selectively inserted into at least one of the slots.

15. An electrical equipment, characterized in that: Comprising a battery device as claimed in any one of claims 1 to 13.

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