Battery device and two-wheeled electric vehicle

Abstract

The utility model discloses a battery device and a two-wheeled electric vehicle. The battery device comprises a box body, a lock, a first connector and a battery, the box body has an accommodating cavity; the lock is connected with the box body and is exposed out of the bottom wall of the accommodating cavity; the first connector is connected with the box body and is exposed out of the bottom wall of the accommodating cavity; the battery comprises a body, a first spring bolt and a second connector, and the first spring bolt and the second connector are arranged at the bottom end of the body; the battery is contained in the containing cavity, the lockset is connected with the first spring bolt in a matched mode, and meanwhile the second connector is connected with the first connector in an inserted mode. The process cost of the battery device is reduced, and the process standardization degree is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a battery device and a two-wheeled electric vehicle. Background Art

[0002] Electric vehicle battery swapping is a new way to replenish energy for electric vehicles. It provides electric energy to electric vehicles by replacing batteries, thus solving the problems of short driving range and long charging time of electric vehicles. The advantage of electric vehicle battery swapping is that it can quickly replenish energy for electric vehicles, which is faster and more convenient than traditional charging methods. In addition, the battery swapping mode can also extend the life of the battery, because the battery can be maintained and serviced at professional battery swapping stations, thereby ensuring the performance and safety of the battery. At present, some countries and cities have begun to promote the electric vehicle battery swapping mode and have built corresponding battery swapping stations and supporting facilities. With the continuous development and popularization of technology, electric vehicle battery swapping is expected to become one of the important ways of urban travel in the future.

[0003] At present, most battery devices in the field of two-wheeled electric vehicles or battery replacement use a method of separating the connector and the locking mechanism of the battery body, and the locking mechanism is purely mechanical. The vehicle controller cannot determine whether the battery is installed in place, resulting in high development costs, cumbersome installation processes, and the risk of overheating and fire due to poor battery contact. Utility Model Content

[0004] The utility model aims to provide a battery device and a two-wheeled electric vehicle, which solve the problems of high process cost and low process standardization of the battery device.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a battery device, comprising:

[0007] A box body having a receiving cavity;

[0008] A lock connected to the box body and exposed on the bottom wall of the receiving cavity;

[0009] A first connector connected to the box body and exposed on the bottom wall of the receiving cavity;

[0010] A battery, comprising a body, a first locking tongue and a second connector, wherein the first locking tongue and the second connector are both arranged at the bottom end of the body;

[0011] The battery is accommodated in the accommodating cavity, the lock is cooperatively connected with the first locking tongue, and the second connector is plugged into the first connector.

[0012] In one embodiment, a straight line passing through the center of the second connector and extending along the height direction of the body is a first rotation axis, the battery also includes a second locking tongue, the second locking tongue is arranged at the bottom end of the body, and the second locking tongue and the first locking tongue are symmetrically arranged 180° around the first rotation axis, and the second connector itself is symmetrically arranged 180° around the first rotation axis.

[0013] In one embodiment, the four side walls of the main body are symmetrically arranged 180° around the first rotation axis; a straight line passing through the center of the first connector and extending along the depth direction of the accommodating cavity is the second rotation axis, and a limiting structure is provided on the inner wall of the accommodating cavity, and the limiting structure is symmetrically arranged 180° around the second rotation axis.

[0014] In one embodiment, the second connector is provided with a plurality of interfaces, and the plurality of interfaces are symmetrically arranged 180° around the first rotation axis; the first connector is provided with a plurality of pins, and the plurality of pins are symmetrically arranged 180° around the second rotation axis; the plurality of pins are accommodated in the interfaces one by one.

[0015] In one embodiment, the bottom end of the body is provided with a first receiving groove, a second receiving groove and a third receiving groove which are spaced apart from each other, the first locking tongue protrudes from the bottom wall of the first receiving groove, the second connector protrudes from the bottom wall of the second receiving groove, the second locking tongue protrudes from the bottom wall of the third receiving groove, the first connector protrudes from the bottom wall of the receiving cavity, and the lock protrudes from the bottom wall of the receiving cavity.

[0016] In one embodiment, the first receiving groove, the second receiving groove and the third receiving groove are symmetrically arranged 180° around the first rotation axis.

[0017] In one embodiment, the lock includes a lock body and a lock retaining spring, the lock body is provided with a lock hole, the lock retaining spring is arranged in the lock body and can be elastically retracted to extend into the lock hole, the lock hole is used to accommodate the first lock tongue or the second lock tongue, and the lock retaining spring is used to engage with the first lock tongue or the second lock tongue.

[0018] In one embodiment, the first locking tongue and the second locking tongue are mushroom-shaped.

[0019] In one embodiment, there are multiple receiving cavities and multiple batteries, and the multiple receiving cavities receive the batteries in a one-to-one correspondence.

[0020] In a second aspect, the utility model provides a two-wheeled electric vehicle, comprising a frame and a battery device as described in any one of the first aspects, wherein the battery device is connected and fixed to the frame.

[0021] The first connector and the lock of the battery device of the utility model are both arranged on the bottom wall of the accommodating cavity, so that the electrical connection of the battery and the locking of the lock can be achieved simultaneously during the process of inserting the battery into the accommodating cavity, unifying the locking and charging interfaces of the batteries at the vehicle end and the battery swap cabinet end, shortening the development cycle and reducing the development cost, reducing the process cost of the battery device, improving the process standardization of the battery device, facilitating the production of the battery device, and improving the safety of users during use and the anti-theft property of the battery body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a perspective view of a battery device and a vehicle frame of an embodiment;

[0024] Figure 2 is an exploded view of a battery device according to an embodiment;

[0025] Figure 3 is a bottom view of a battery of an embodiment;

[0026] Figure 4 This is a partial structural diagram of a lock according to an embodiment.

[0027] Description of reference numerals:

[0028] 100-battery device, 10-box, 11-receiving cavity, 12-mounting piece, 20-lock, 21-lock body, 211-lock hole, 22-locking spring, 23-mounting portion, 231-mounting hole, 30-first connector, 31-pin, 40-battery, 41-main body, 411-first receiving slot, 412-second receiving slot, 413-third receiving slot, 42-first locking tongue, 43-second connector, 431-interface, 44-second locking tongue, 200-frame; a-first rotation axis. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0032] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0033] At present, most battery devices in the field of two-wheeled electric vehicles or battery replacement use a method of separating the connector and the locking mechanism of the battery body, and the locking mechanism is purely mechanical. The vehicle controller cannot determine whether the battery is installed in place, resulting in high development costs, cumbersome installation processes, and the risk of overheating and fire due to poor battery contact.

[0034] refer to Figure 1 and Figure 2 The utility model provides a battery device 100, including a box body 10, a lock 20, and a battery 40. The box body 10 has a receiving cavity 11. The lock 20 is connected to the box body 10 and exposed to the bottom wall of the receiving cavity 11. The first connector 30 is connected to the box body 10 and exposed to the bottom wall of the receiving cavity 11. The battery 40 includes a body 41, a first locking tongue 42 and a second connector 43, and the first locking tongue 42 and the second connector 43 are both arranged at the bottom end of the body 41. The battery 40 is received in the receiving cavity 11, the lock 20 is connected with the first locking tongue 42, and at the same time, the second connector 43 is plugged into the first connector 30.

[0035] The box body 10 is made of a material with high structural strength, and specifically can be made of metal materials, high-strength plastics, ceramics, carbon fibers, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys, etc. The box body 10 can be an integrated structure made by an integrated molding process, and the integrated molding process can specifically be stamping, casting, etc., without limitation. The box body 10 can also be a split structure, and the side panels and the bottom panel of the box body 10 can be connected and fixed by welding, bonding, clamping, screwing, etc.

[0036] The side walls of the box body 10 can limit the movement of the battery 40 and provide a certain support to the battery 40 , thereby helping to improve the structural stability of the battery device 100 .

[0037] The height of the receiving cavity 11 is higher than that of the battery 40 , which can enhance the protection of the battery 40 and play a certain guiding role when the battery 40 is inserted into the receiving cavity 11 .

[0038] The lock 20 and the first connector 30 can be spaced apart on the bottom wall of the receiving cavity 11, that is, they can be indirectly connected through the bottom wall of the receiving cavity 11, or they can be directly connected without limitation. The distance between the lock 20 and the first connector 30 is adjusted according to the distance between the second connector 43 and the first lock tongue 42, that is, the distance between the lock 20 and the first connector 30 can be adjusted according to different batteries 40, which can effectively improve the process standardization of the battery device 100.

[0039] The connection and fixing method between the lock 20 and the bottom wall of the receiving cavity 11 can be screw connection, welding, bonding, etc., without limitation. Specifically, the box body 10 further includes a plurality of mounting members 12, and the lock 20 further includes a mounting portion 23, on which a plurality of mounting holes 231 are provided. The plurality of mounting members 12 are connected and fixed to the bottom wall of the receiving cavity 11 through the mounting holes 231 corresponding to each other. The mounting members 12 can be bolts, and the corresponding mounting holes 231 are threaded holes.

[0040] The first connector 30 and the bottom wall of the receiving cavity 11 may be connected and fixed by screw connection, welding, bonding, etc., without limitation.

[0041] The first connector 30 and the second connector 43 are electrically connected after being plugged in.

[0042] The first connector 30 and the lock 20 of the battery device 100 of the utility model are both arranged on the bottom wall of the accommodating cavity 11, so that the electrical connection of the battery 40 and the locking of the lock 20 can be achieved simultaneously during the process of inserting the battery 40 into the accommodating cavity 11, unifying the locking and charging interfaces of the battery 40 at the vehicle end and the battery swap cabinet end, shortening the development cycle and reducing the development cost, reducing the process cost of the battery device 100, improving the process standardization of the battery device 100, facilitating the production of the battery device 100, and improving the safety of users during use and the anti-theft property of the battery 40 body 41.

[0043] refer to Figure 2 In one embodiment, a straight line passing through the center of the second connector 43 and extending along the height direction of the body 41 is a first rotation axis a, the battery 40 further includes a second locking tongue 44, the second locking tongue 44 is disposed at the bottom end of the body 41, and the second locking tongue 44 and the first locking tongue 42 are symmetrically disposed around the first rotation axis a180°, and the second connector 43 itself is symmetrically disposed around the first rotation axis a180°.

[0044] The distance between the lock 20 and the center of the first connector 30 is d1, the distance between the first locking tongue 42 and the center of the second connector 43 is d2, and the distance between the second locking tongue 44 and the center of the second connector 43 is d3, which satisfies: d1 = d2 = d3. d1 = d2 = d3 can ensure that when the first connector 30 and the second connector 43 are plugged in, one of the first locking tongue 42 and the second locking tongue 44 is locked with the lock 20.

[0045] The first locking tongue 42 and the second locking tongue 44 serve as fixing points of the battery body 41 and are symmetrically arranged relative to the second connector 43 at the bottom of the battery body 41. The purpose is to enable the locking tongue and the lock 20 to be locked no matter which direction the battery body 41 is inserted into the receiving cavity 11, so that the battery 40 can be inserted forward and backward, making the locking operation of the battery 40 convenient.

[0046] refer to Figure 2 In one embodiment, the surrounding side walls of the body 41 are symmetrically arranged 180° around the first rotation axis a; a straight line passing through the center of the first connector 30 and extending along the depth direction of the accommodating cavity 11 is the second rotation axis, and a limiting structure is provided on the inner wall of the accommodating cavity 11, and the limiting structure is symmetrically arranged 180° around the second rotation axis.

[0047] exist Figure 2 The second rotation axis coincides with the first rotation axis a. The limiting member can be a slot or a protrusion, and the body 41 is correspondingly provided with a protrusion or a slot. The limiting member is used to strengthen the limiting of the battery 40 to prevent the battery 40 from moving. At the same time, the limiting member can also play a guiding role during the installation of the battery 40.

[0048] refer to Figure 2 and Figure 3 In one embodiment, the second connector 43 is provided with a plurality of interfaces 431, and the plurality of interfaces 431 are symmetrically arranged around the first rotation axis a by 180°; the first connector 30 is provided with a plurality of pins 31, and the plurality of pins 31 are symmetrically arranged around the second rotation axis by 180°; the plurality of pins 31 are accommodated in the interfaces 431 one by one.

[0049] The interface 431 is used to achieve electrical connection with the first connector 30. A contact is also provided in the interface 431. The contact is usually made of metal, such as gold, silver, copper, etc., and the shape and structure are determined according to specific needs.

[0050] The specific types of interface 431 may be 110 female terminal (used to connect other terminals and transmit current), 187 female terminal (with a plug-in function), 205 female terminal (with multiple jacks, which can be used to insert multiple wires and transmit current), 250 female terminal (with larger jacks and more plugs, which can be used to insert more wires and transmit greater current), etc., without limitation.

[0051] The second connector 43 also includes an insulator, a housing, and accessories. The insulator is a non-metallic part in the connector, which is used to separate the contacts to prevent short circuits between the contacts. The insulator is usually made of materials such as plastic or ceramic. The housing is used to protect and fix the internal contacts and insulators. The housing is usually made of metal or plastic. Accessories are auxiliary parts in the second connector 43, which can be wire clamps, positioning pins, etc., which are used to improve the installation and use performance of the second connector 43.

[0052] The multiple interfaces 431 on the second connector 43 are symmetrically arranged around the first rotation axis a180°, so that the first connector 30 and the second connector 43 can be plugged in no matter which direction the battery 40 body 41 is inserted into the receiving cavity 11, thereby realizing the forward and reverse insertion of the battery 40 and making the locking operation of the battery 40 convenient.

[0053] The pin 31 is used to achieve electrical connection with the second connector 43. The pin 31 is usually made of metal, such as gold, silver, copper, etc., and the shape and structure are determined according to specific needs. The first connector 30 also includes an insulator, a shell and accessories. The insulator is used to separate the pins 31 to prevent short circuits between the pins 31. The insulator is usually made of materials such as plastic or ceramic. The shell is used to protect and fix the internal pins 31 and insulators, and the shell is usually made of metal or plastic. Accessories are auxiliary parts in the first connector 30, which can specifically be wire clamps, locating pins, etc., which are used to improve the installation and use performance of the first connector 30. The first connector 30 is symmetrically arranged 180° around the second rotation axis.

[0054] Specifically, the pin 31 of the first connector 30 can also be a plug-in terminal (characterized by easy installation, reliable contact, and easy maintenance, usually using screws to fix the terminal, which is convenient for disassembly and replacement of wires), 110 male terminal, 187 male terminal, 205 male terminal, 250 male terminal, straight male terminal, etc., without restriction.

[0055] Multiple pins 31 are symmetrically arranged 180° around the second rotation axis and correspondingly arranged with the second connector 43, so that the first connector 30 and the second connector 43 can be plugged in no matter which direction the battery 40 body 41 is inserted into the receiving cavity 11, thereby realizing the forward and reverse insertion of the battery 40 and making the locking operation of the battery 40 convenient.

[0056] refer to Figure 3 In one embodiment, a first receiving groove 411, a second receiving groove 412 and a third receiving groove 413 are arranged at intervals at the bottom end of the body 41, the first locking tongue 42 protrudes from the bottom wall of the first receiving groove 411, the second connector 43 protrudes from the bottom wall of the second receiving groove 412, the second locking tongue 44 protrudes from the bottom wall of the third receiving groove 413, the first connector 30 protrudes from the bottom wall of the receiving cavity 11, and the lock 20 protrudes from the bottom wall of the receiving cavity 11.

[0057] In one embodiment, the first receiving groove 411, the second receiving groove 412 and the third receiving groove 413 are symmetrically arranged around the first rotation axis a by 180°.

[0058] The shapes of the first receiving groove 411 and the third receiving groove 413 must be consistent, and the shapes of the first receiving groove 411 and the second receiving groove 412 may be inconsistent.

[0059] When the battery device 100 is locked, the first receiving groove 411 and the third receiving groove 413 are used to receive the portion of the lock 20 protruding from the bottom wall of the receiving cavity 11, and the second receiving groove 412 is used to receive the portion of the first connector 30 protruding from the bottom wall of the receiving cavity 11. On the one hand, the connection and fixing strength between the battery 40 and the box body 10 can be strengthened, and on the other hand, the volume of the battery device 100 can be reduced to improve the space utilization rate of the vehicle.

[0060] refer to Figure 4 In one embodiment, the lock 20 includes a lock body 21 and a lock spring 22. The lock body 21 is provided with a lock hole 211. The lock spring 22 is arranged in the lock body 21 and can be elastically retracted to extend into the lock hole 211. The lock hole 211 is used to accommodate the first lock tongue 42 or the second lock tongue 44. The lock spring 22 is used to engage with the first lock tongue 42 or the second lock tongue 44.

[0061] The shape of the lock hole 211 can be a square lock hole 211, a circular lock hole 211, a rectangular lock hole 211, etc., without limitation.

[0062] The lock spring 22 is usually made of metal material, has certain elasticity and strength, and can withstand certain pressure and impact. When the lock 20 is installed, the lock spring 22 firmly fixes the first lock tongue 42 or the second lock tongue 44 on the door lock through its elasticity and fixing effect, which can effectively prevent the lock core from loosening or falling off, ensuring the normal use and safety of the lock 20.

[0063] Since the production difficulty and production cost of the lock hole 211 are higher than those of the lock tongue, the battery device 100 of the present invention is provided with a first lock tongue 42 and a second lock tongue 44. Either lock tongue can be inserted into the lock hole 211 to lock the battery 40, thereby reducing the production cost while ensuring that the use function of the battery device 100 remains unchanged.

[0064] refer to Figure 2 In one embodiment, the first locking tongue 42 and the second locking tongue 44 are mushroom-shaped, specifically, they are conical mushroom-shaped. The conical mushroom-shaped first locking tongue 42 and the second locking tongue 44 can provide greater locking force and stronger impact resistance. In addition, the conical mushroom-shaped first locking tongue 42 and the second locking tongue 44 can also prevent being damaged or pried open, thereby increasing the overall safety and reliability of the battery device 100.

[0065] In one embodiment, the lock tongue can also be an inclined tongue, which is usually used in conjunction with the inclined surface of the lock hole 211 to increase the stability and safety of the lock 20; the lock tongue can also be a square lock tongue, which is usually used in conjunction with the square lock hole 211; the lock tongue can also be a cylindrical lock tongue, which is usually used in conjunction with the cylindrical lock hole 211; the lock tongue can also be a hook-shaped lock tongue, which is usually used in conjunction with the hook-shaped lock hole 211.

[0066] refer to Figure 2 In one embodiment, a plurality of pins 31 are disposed on the first connector 30 , and the plurality of pins 31 are received in the interface 431 of the second connector 43 in a one-to-one correspondence.

[0067] refer to Figure 3 In one embodiment, there are multiple receiving cavities 11 and multiple batteries 40, and the multiple receiving cavities 11 receive the batteries 40 in a one-to-one correspondence.

[0068] The multiple batteries 40 need to be provided with the same number of locks 20 and first connectors 30 .

[0069] When there are multiple batteries 40, two adjacent receiving chambers 11 are provided with partition plates to separate the receiving space, and the receiving chamber 11 is divided into a first chamber, a second chamber, etc., correspondingly accommodating batteries 40, avoiding collision between adjacent batteries 40, and improving the safety of the battery device 100. The bottom wall surface of each chamber is correspondingly provided with a lock 20 and a first connector 30.

[0070] In one embodiment, the shape of the receiving cavity 11 is set corresponding to the shape of the battery 40. Specifically, when the cross-sectional shape of the main body of the battery 40 is square, the corresponding cross-sectional shape of the receiving cavity 11 is also square; when the cross-sectional shape of the main body of the battery 40 is rhombus, the corresponding cross-sectional shape of the receiving cavity 11 is also rhombus.

[0071] In one embodiment, the lock 20 also includes a control unit, which is used to transmit the use status of the lock 20. The lock 20 is a smart lock, and the control unit includes a state detection sensor, which can be a position switch, a vibration switch, a pressure switch, etc., without limitation. The state detection sensor usually has the characteristics of high precision, high reliability, and high stability. The state detection sensor in the lock 20 can be used to determine whether the battery 40 is locked in place and send it to the vehicle control unit (VCU) or the central controller; the transmission unit can also transmit the locking state of the lock 20 to the APP or the host computer to show the user whether the battery 40 is in a connected state. The user can also unlock the lock 20 through the APP or the host computer, and then perform the battery replacement operation of the battery 40. In the later stage, the human-computer interaction application of the user, the vehicle and the battery replacement cabinet can also be quickly realized through software iteration, which is conducive to improving the user's experience and safety, and making the user's operation more convenient.

[0072] In one embodiment, the lock 20 also includes a mechanical switch. When the control circuit is interrupted due to force majeure, the mechanical switch on the side of the lock 20 can be operated to lock the battery 40, which is beneficial to expand the application scope of the battery device 100 and improve the user experience.

[0073] refer to Figure 1 The utility model provides a two-wheeled electric vehicle, comprising a frame 200 and a battery device 100 as described in any of the above embodiments, wherein the battery device 100 is connected and fixed to the frame 200. The connection between the battery device 100 and the vehicle body can be screw connection, welding, clamping, etc., without limitation.

[0074] The vehicle body is made of materials with high structural strength, specifically metal materials, high-strength plastics, ceramics, carbon fiber, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc. The vehicle body is a split structure, with multiple parts connected and fixed by welding, bonding, clamping, screwing, etc.

[0075] Two-wheeled electric vehicles can be electric cars, electric motorcycles, etc., without any restrictions.

[0076] The frame 200 can be specifically divided into a main support, a side support, a rear fork, a middle support, and a rear rack. The main support is the main supporting structure of the vehicle body, used to connect and support components such as wheels, motors, controllers, and battery devices 100; the side support is used to support the side of the vehicle body to increase the stability and rigidity of the vehicle body; the rear fork is used to support the rear of the two-wheeled electric vehicle, connecting the rear wheel and the frame, and at the same time plays a shock-absorbing and supporting role; the middle support is used to support the middle part of the two-wheeled electric vehicle to increase the rigidity and stability of the vehicle body; the rear rack is used to carry goods or luggage at the rear of the two-wheeled electric vehicle to increase the load-bearing capacity of the vehicle body.

[0077] The first connector 30 and the lock 20 of the battery device 100 of the utility model are both arranged on the bottom wall of the accommodating cavity 11, so that the electrical connection of the battery 40 and the locking of the lock 20 can be achieved simultaneously during the process of inserting the battery 40 into the accommodating cavity 11, and the locking and charging interfaces 431 of the battery 40 at the vehicle end and the battery swap cabinet end are unified, thereby shortening the development cycle and reducing the development cost, reducing the process cost of the battery device 100, and improving the process standardization of the battery device 100, facilitating the production of the battery device 100, and improving the safety of users during use and the anti-theft property of the battery 40 body 41. In the later stage, the human-computer interaction application of users, vehicles and battery swap cabinets can also be quickly realized through software iteration.

[0078] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A battery device, characterized in that: include: A box body having a receiving cavity; A lock connected to the box body and exposed on the bottom wall of the receiving cavity; A first connector connected to the box body and exposed on the bottom wall of the receiving cavity; A battery, comprising a body, a first locking tongue and a second connector, wherein the first locking tongue and the second connector are both arranged at the bottom end of the body; The battery is accommodated in the accommodating cavity, the lock is cooperatively connected with the first locking tongue, and the second connector is plugged into the first connector.

2. The battery device according to claim 1, characterized in that: A straight line passing through the center of the second connector and extending along the height direction of the body is a first rotation axis. The battery also includes a second locking tongue, which is arranged at the bottom end of the body, and the second locking tongue and the first locking tongue are symmetrically arranged 180° around the first rotation axis. The second connector itself is symmetrically arranged 180° around the first rotation axis.

3. The battery device according to claim 2, characterized in that: The side walls of the main body are symmetrically arranged 180° around the first rotation axis; the straight line passing through the center of the first connector and extending along the depth direction of the accommodating cavity is the second rotation axis, and the inner wall of the accommodating cavity is provided with a limiting structure, which is symmetrically arranged 180° around the second rotation axis.

4. The battery device according to claim 3, characterized in that: The second connector is provided with a plurality of interfaces, and the plurality of interfaces are symmetrically arranged 180° around the first rotation axis; the first connector is provided with a plurality of pins, and the plurality of pins are symmetrically arranged 180° around the second rotation axis; the plurality of pins are accommodated in the interfaces one by one.

5. The battery device according to claim 2, characterized in that: The bottom end of the body is provided with a first receiving groove, a second receiving groove and a third receiving groove which are spaced apart from each other, the first locking tongue protrudes from the bottom wall of the first receiving groove, the second connector protrudes from the bottom wall of the second receiving groove, the second locking tongue protrudes from the bottom wall of the third receiving groove, the first connector protrudes from the bottom wall of the receiving cavity, and the lock protrudes from the bottom wall of the receiving cavity.

6. The battery device according to claim 5, characterized in that: The first receiving groove, the second receiving groove and the third receiving groove are symmetrically arranged at 180° around the first rotation axis.

7. The battery device according to claim 2, characterized in that: The lock comprises a lock body and a lock retaining spring, wherein the lock body is provided with a lock hole, the lock retaining spring is arranged in the lock body and can be elastically retracted so as to extend into the lock hole, the lock hole is used to accommodate the first lock tongue or the second lock tongue, and the lock retaining spring is used to be engaged with the first lock tongue or the second lock tongue.

8. The battery device according to claim 6, characterized in that: The first locking tongue and the second locking tongue are in a mushroom head shape.

9. The battery device according to any one of claims 1 to 8, characterized in that: There are multiple receiving cavities and multiple batteries, and the multiple receiving cavities receive the batteries in a one-to-one correspondence.

10. A two-wheeled electric vehicle, characterized in that: It comprises a vehicle frame and a battery device as claimed in any one of claims 1 to 9, wherein the battery device is connected and fixed to the vehicle frame.

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