Battery, battery assembly and electric bicycle

Abstract

The invention relates to the technical field of electric bicycles, and particularly discloses a battery, a battery assembly and an electric bicycle. The battery comprises a battery body and a connector arranged at one end of the battery body, wherein the connector comprises a connector body, a second connector and an elastic piece. The connector body comprises a limiting mounting part used for being matched with a first battery holder, a mounting hole is formed in the limiting mounting part, and a first connector is arranged on the first battery holder; the second connector is assembled on the connector body in a sliding mode, at least part of the second connector is arranged in the mounting hole in a sliding mode, and the second connector is connected with the first connector; the elastic piece is arranged in the connector body, and the elastic piece is configured to apply pressure to the second connector all the time, so that the second connector can be tightly attached to the first connector all the time. The second connector on the battery holder can be tightly attached to the first connector on the battery all the time, the working reliability is high, and the service life is long.

Description

Technical Field

[0001] The present invention relates to the technical field of electric bicycles, and in particular to a battery, a battery assembly and an electric bicycle. Background Art

[0002] An electric bicycle contains a motor that drives the tires to rotate and a battery that supplies the motor with electricity for operation. The battery is generally installed inside the frame in the form of a battery assembly. The battery assembly consists of an upper battery holder, a battery body and a lower battery holder. The upper battery holder and the lower battery holder are generally fixed to the frame by bolts, and the battery body is fixed between the upper battery holder and the lower battery holder. However, due to the manufacturing tolerance of the battery assembly and the vibration during riding, the connection contacts between the connector plug on the battery body and the connector socket on the lower battery holder will rub against each other. After long-term friction, abrasive particles or deformation will be generated, which will increase the impedance value of the connection contacts, causing poor contact or functional failure.

[0003] Based on the above problems, some electric bicycles have a force-applying component between the lower battery seat and the frame, and the lower battery seat is set as a movable component. The force-applying component applies a force along the length direction of the battery body to the lower battery seat, which can maintain a close fit between the lower battery seat and the battery body and avoid friction between the connection contacts. However, during the vibration of the battery, the force-applying component needs to bear all the forces from the battery body. When the force is too large, it is easy to cause fatigue failure or aging of the force-applying component, making it difficult for the lower battery seat to maintain a close fit with the battery body, seriously affecting the working reliability and service life of the force-applying component.

[0004] Therefore, it is urgent to provide a battery holder, a battery assembly and an electric bicycle to solve the above technical problems. Summary of the invention

[0005] According to one aspect of the present invention, a battery is provided, wherein a second connector on the battery can always maintain a tight fit with a first connector on a first battery holder through an elastic member, and during movement of the battery relative to the first battery holder, the first battery holder and the battery can limit each other to limit the deformation of the elastic member, thereby improving the reliability of the elastic member and extending the service life of the elastic member.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A battery, comprising a battery body and a connector arranged at one end of the battery body, wherein the connector comprises:

[0008] A connector body, arranged at one end of the battery body, the connector body comprising a limit mounting portion, the limit mounting portion being provided with a mounting hole, the limit mounting portion being used to cooperate with a first battery holder, the first battery holder being provided with a first connector;

[0009] A second connector, slidably assembled on the connector body, at least a portion of the second connector is slidably disposed in the mounting hole, and the second connector is connected to the first connector;

[0010] An elastic member is disposed in the connector body, and the elastic member is configured to always apply pressure to the second connector so that the second connector can always be in close contact with the first connector.

[0011] Optionally, a mounting groove opposite to the mounting hole is provided on the connector body, and the second connector includes a connecting portion and a limiting portion connected to each other, the connecting portion is slidably arranged in the mounting hole, the limiting portion is slidably installed in the mounting groove, the elastic member is arranged in the mounting groove, one end of the elastic member abuts against the bottom wall of the mounting groove, and the other end abuts against the bottom of the limiting portion.

[0012] Optionally, the connector body further comprises a supporting plate, which is detachably connected to the position limiting mounting portion and is arranged opposite to the mounting hole, and the supporting plate and the position limiting mounting portion form the mounting groove.

[0013] Optionally, a limiting groove is provided on the supporting plate, and one end of the elastic member is installed in the limiting groove.

[0014] Optionally, the second connector includes a connecting portion and a limiting portion which are connected to each other, the connecting portion is slidably disposed in the mounting hole, and the limiting portion can abut against the limiting mounting portion to limit a sliding distance of the connecting portion.

[0015] Optionally, a sealing member is provided between the second connector and the inner peripheral wall of the mounting hole.

[0016] Optionally, an annular groove is provided on the inner peripheral wall of the mounting hole, part of the sealing member is installed in the annular groove, and the part of the sealing member disposed outside the annular groove is slidably attached to the second connector.

[0017] Optionally, one of the first connector and the second connector is provided with a connecting hole, and the other connector is provided with a connecting rib, and the connecting rib is inserted into the connecting hole.

[0018] Optionally, the elastic member is a spring, a rubber pad or a wave pad.

[0019] According to another aspect of the present invention, the present invention also provides a battery assembly, comprising a first battery holder, a second battery holder and a battery as described in any of the above technical solutions, wherein the connecting head of the battery is connected to the first battery holder, and the other end of the battery is connected to the second battery holder.

[0020] According to another aspect of the present invention, the present invention also provides an electric bicycle, comprising a frame and the above-mentioned battery assembly, wherein the frame is provided with a accommodating cavity, and the first battery holder and the second battery holder of the battery assembly are respectively installed at opposite ends of the accommodating cavity.

[0021] The beneficial effects of the present invention are:

[0022] The present invention provides a battery, comprising a battery body and a connector, wherein the connector comprises a connector body, a second connector and an elastic member. After the battery is installed on a first battery holder through the connector, the elastic member will be compressed, and the compressed elastic member will exert a thrust on the second connector under the action of an elastic restoring force, so that the second connector is closely attached to the first connector, thereby improving the connection reliability between the second connector and the first connector.

[0023] When the first battery holder and the battery are separated due to vibration, the elastic member will stretch under the action of the elastic restoring force to ensure that the second connector is always close to the first connector, avoiding friction caused by relative movement between the second connector and the first connector, which not only improves the reliability of the electrical connection between the second connector and the first connector, but also avoids the wear of the connection contacts between the second connector and the first connector, thereby extending the service life of the second connector and the first connector. When the battery moves from the position separated from the first battery holder to the first battery holder due to vibration or other reasons, the elastic member will be compressed and elastically deformed. If the vibration force is too large, the limit mounting part of the connector will press against the first battery holder, and the movement of the battery will be limited by the limit cooperation between the first battery holder and the limit mounting part, thereby avoiding excessive deformation of the elastic member due to further movement of the battery. That is, the limit mounting part shares part of the force from the battery for the elastic member, making it less likely for the elastic member to fail due to fatigue, thereby improving the reliability of the electrical connection between the battery and the first battery holder and extending the service life of the battery.

[0024] The present invention also provides a battery assembly, comprising a first battery holder, a second battery holder and the above-mentioned battery. Due to the use of the above-mentioned battery, the battery assembly has better power supply reliability and longer service life.

[0025] The present invention also provides an electric bicycle, comprising a frame and the above-mentioned battery assembly. Since the electric bicycle adopts the above-mentioned battery assembly, the risk of power failure during riding is low, and the failure rate of the battery assembly is also low. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A partial schematic diagram of a battery provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a first battery holder provided by an embodiment of the present invention;

[0028] Figure 3 A partial schematic diagram of a cross-sectional view of a battery provided by an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of a connector provided by an embodiment of the present invention from a viewing angle (the second connector is not shown);

[0030] Figure 5 A schematic diagram of the structure of a connector provided by an embodiment of the present invention from another perspective (the second connector is not shown);

[0031] Figure 6 A schematic diagram of the structure of a position limiting installation portion provided in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the structure of a support plate provided in an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the structure of a second connector provided by an embodiment of the present invention;

[0034] Fig. 9 A schematic diagram of an exploded view of a battery assembly provided in an embodiment of the present invention.

[0035] In the figure:

[0036] 10. first battery holder; 11. first connector; 12. connecting rib; 13. first clamping portion; 14. second clamping portion; 20. second battery holder; 30. vehicle frame; 31. accommodating cavity;

[0037] 100, battery; 110, battery body; 120, connector; 121, connector body; 1211, limit mounting portion; 12111, mounting hole; 12112, annular groove; 12113, first card slot; 12114, second card slot; 1212, mounting slot; 1213, supporting plate; 12131, limit slot; 122, second connector; 1221, connecting portion; 1222, limit portion; 1223, connecting hole; 123, elastic member; 124, sealing member. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] The present embodiment provides a battery, wherein the second connector on the battery can always maintain a tight fit with the first connector on the first battery holder through an elastic member, and when the battery moves relative to the first battery holder, the first battery holder and the battery can limit each other to limit the deformation of the elastic member, thereby improving the reliability of the elastic member and extending the service life of the elastic member.

[0043] Specifically, Figure 1-Figure 6 As shown, the battery 100 includes a battery body 110 and a connector 120. The connector 120 is arranged at one end of the battery body 110. The connector 120 is used to cooperate with the first battery holder 10 to realize the assembly between the battery 100 and the first battery holder 10. The first battery holder 10 is provided with a first connector 11 for electrically connecting to the battery 100.

[0044] The connector 120 includes a connector body 121, a second connector 122 and an elastic member 123. The connector body 121 is disposed at one end of the battery body 110, and the connector body 121 includes a position limiting mounting portion 1211 for cooperating with the first battery holder 10, and a mounting hole 12111 is provided on the position limiting mounting portion 1211. The second connector 122 is slidably assembled on the connector body 121, and at least a portion of the second connector 122 is slidably disposed in the mounting hole 12111, and the second connector 122 is connected to the first connector 11. The elastic member 123 is disposed in the connector body 121, and the elastic member 123 is configured to always apply pressure to the second connector 122 so that the second connector 122 can always be close to the first connector 11.

[0045] After the battery 100 and the first battery holder 10 are assembled, the elastic member 123 will be compressed. The compressed elastic member 123 will apply a thrust to the second connector 122 under the action of the elastic restoring force, so that it is close to the first connector 11. When the first battery holder 10 and the battery 100 are separated due to vibration, the elastic member 123 will stretch under the action of the elastic restoring force to ensure that the second connector 122 is always close to the first connector 11, avoiding friction caused by relative movement between the second connector 122 and the first connector 11, thereby improving the reliability of the electrical connection between the second connector 122 and the first connector 11, avoiding the wear of the connection contacts between the second connector 122 and the first connector 11, and extending the service life of the second connector 122 and the first connector 11.

[0046] When the battery 100 moves from a position separated from the first battery holder 10 to the first battery holder 10 due to vibration or other reasons, the elastic member 123 will be compressed and elastically deformed. If the vibration force is too large, the limiting mounting portion 1211 will press against the first battery holder 10, and the movement of the battery 100 will be limited by the first battery holder 10 to prevent the battery 100 from further moving and causing excessive deformation of the elastic member 123. That is, the limiting mounting portion 1211 shares part of the force from the battery 100 for the elastic member 123, making it less likely for the elastic member 123 to fail due to fatigue, thereby improving the reliability of the electrical connection between the battery 100 and the first battery holder 10 and extending the service life of the battery 100.

[0047] Furthermore, if Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, the connector body 121 is provided with a mounting groove 1212 opposite to the mounting hole 12111, the second connector 122 includes a connecting portion 1221 and a limiting portion 1222 connected to each other, the connecting portion 1221 is slidably arranged in the mounting hole 12111, the limiting portion 1222 is slidably arranged in the mounting groove 1212, the elastic member 123 is arranged in the mounting groove 1212, one end of the elastic member 123 abuts against the bottom wall of the mounting groove 1212, and the other end abuts against the bottom of the limiting portion 1222. The second connector 122 and the elastic member 123 are installed through the mounting groove 1212, the structure is simple, the installation and disassembly are relatively convenient, and the installation reliability is relatively high.

[0048] Alternatively, if Figure 3-Figure 5 As shown, in this embodiment, the connector body 121 further includes a supporting plate 1213, which is detachably connected to the position limiting mounting portion 1211 and arranged opposite to the mounting hole 12111. The supporting plate 1213 and the position limiting mounting portion 1211 form a mounting groove 1212. With such an arrangement, when the second connector 122 needs to be installed and removed, only the supporting plate 1213 needs to be removed, which facilitates the assembly and maintenance of the second connector 122.

[0049] Alternatively, if Figure 3 and Figure 7 As shown, a limiting groove 12131 is provided on the supporting plate 1213, and one end of the elastic member 123 is installed in the limiting groove 12131. By setting the limiting groove 12131 to fix the elastic member 123, it is convenient to install the elastic member 123 and can improve the connection strength between the elastic member 123 and the supporting plate 1213.

[0050] Furthermore, multiple elastic members 123 may be provided, and each elastic member 123 is provided with a corresponding limit groove 12131. By providing multiple elastic members 123, multiple elastic members 123 jointly support the force from the battery 100, which can further reduce the risk of fatigue failure of the elastic members 123.

[0051] Optionally, in this embodiment, the elastic member 123 is a spring. In other embodiments, the elastic member 123 may also be other, such as a rubber pad, a wave pad, etc., which can be set according to actual needs, and this application does not make specific limitations.

[0052] Optionally, in this embodiment, the supporting plate 1213 is connected to the position limiting mounting portion 1211 by bolt connection. In other embodiments, the connection method between the supporting plate 1213 and the position limiting mounting portion 1211 can also be other, such as clamping, etc., which can be set according to actual needs, and this application does not make specific limitations.

[0053] Furthermore, if Figure 3 As shown, a seal 124 is provided between the second connector 122 and the inner circumferential wall of the mounting hole 12111. By providing the seal 124, the gap between the second connector 122 and the inner circumferential wall of the mounting hole 12111 can be sealed to prevent external water or impurities from entering the battery body 110 through the gap, thereby improving the sealing performance of the battery 100.

[0054] Alternatively, if Figure 6 As shown, an annular groove 12112 is provided on the inner peripheral wall of the mounting hole 12111, part of the seal 124 is installed in the annular groove 12112, and the part of the seal 124 outside the annular groove 12112 is slidably attached to the second connector 122. The sealing member 124 is fixed by providing the annular groove 12112, so that the installation stability of the sealing member 124 can be improved, and the structure is simple, which facilitates the installation and removal of the sealing member 124.

[0055] It is understandable that the sealing member 124 may be, but is not limited to, an elastic sealing ring.

[0056] Furthermore, if Figure 8 As shown, the second connector 122 includes a connecting portion 1221 and a limiting portion 1222 that are connected to each other, the connecting portion 1221 is slidably disposed in the mounting hole 12111, and the limiting portion 1222 can abut against the limiting mounting portion 1211 to limit the sliding distance of the connecting portion 1221. That is, by setting the limiting cooperation between the limiting portion 1222 and the limiting mounting portion 1211, the second connector 122 can be reliably installed in the connector body 121, so as to prevent the second connector 122 from falling from the mounting hole 12111 when the battery 100 is not assembled with the first battery holder 10.

[0057] It is understandable that, under normal working conditions, the limit portion 1222 may not be lower than the limit mounting portion 1211 , and under strong vibration conditions, the limit portion 1222 abuts against the limit mounting portion 1211 to achieve the purpose of limiting the sliding distance of the connecting portion 1221 .

[0058] Optionally, in this embodiment, the connecting portion 1221 and the limiting portion 1222 are in a stepped structure, and the step surface on the limiting portion 1222 can abut against the limiting mounting portion 1211 to limit the movement distance of the second connector 122 .

[0059] Further, see Figure 1 and Figure 2One of the first connector 11 and the second connector 122 is provided with a connection hole 1223, and the other is provided with a connection rib 12, and the connection rib 12 is inserted into the connection hole 1223. By providing the connection hole 1223 and the connection rib 12, the connection strength between the first connector 11 and the second connector 122 can be improved, and the risk of the first connector 11 and the second connector 122 being separated due to vibration can be reduced, thereby reducing the risk of the first connector 11 and the second connector 122 being worn due to relative movement, and further improving the reliability of the electrical connection between the first connector 11 and the second connector 122.

[0060] In this embodiment, the connection hole 1223 is provided on the second connector 122 , and the connection rib 12 is provided on the first connector 11 .

[0061] Optionally, in this embodiment, a plurality of connection holes 1223 are provided, and the plurality of connection holes 1223 are arranged at intervals along the circumference of the second connector 122. Accordingly, a plurality of connection ribs 12 are also provided, and the connection ribs 12 are arranged one-to-one with the connection holes 1223. By providing a plurality of connection holes 1223 and connection ribs 12, the connection strength between the first connector 11 and the second connector 122 is further improved.

[0062] Optionally, the connecting rib 12 can be connected to the connecting hole 1223 by snap-fitting, or by interference fit, and it can be set according to actual needs, and this application does not make any specific limitation.

[0063] Further, see Figure 1 and Figure 2 , a first card slot 12113 and a pair of second card slots 12114 are also provided on the position limiting installation portion 1211. A first engaging portion 13 engaging with the first card slot 12113 and a second engaging portion 14 engaging with the second card slot 12114 are provided on the first battery holder 10. And the top of the first engaging portion 13 is an arc surface. When the battery 100 is installed on the first battery holder 10, the first engaging portion 13 is first inserted into the first card slot 12113, and the first engaging portion 13 is used as a rotation fulcrum. The installation of the battery 100 is completed by rotation, and finally the second engaging portion 14 is engaged with the corresponding second card slot 12114, and the first connector 11 is connected with the second connector 122. Setting the top of the first engaging portion 13 as an arc surface can improve the smoothness of the rotation of the battery 100.

[0064] Optionally, in this embodiment, the first connector 11 is a plug and the second connector 122 is a socket. In other embodiments, the first connector 11 can also be set as a socket and the second connector 122 can be set as a plug, which can be set according to actual needs and is not specifically limited in this application.

[0065] Further, see Figure 3 The socket includes a socket and an elastic clip disposed in the socket, and the socket includes a conductive sheet, the conductive sheet is inserted into the elastic clip, and the elastic clip can highly clamp the conductive sheet. Such an arrangement can improve the connection strength between the first connector 11 and the second connector 122.

[0066] like Fig. 9 As shown, this embodiment also provides a battery assembly, including a first battery holder 10, a second battery holder and the above-mentioned battery 100, the connector 120 of the battery 100 is connected to the first battery holder 10, and the other end of the battery 100 is connected to the second battery holder.

[0067] Since the battery assembly adopts the above-mentioned battery 100, the reliability of power supply is better and the service life is longer.

[0068] Continue to see Fig. 9 This embodiment provides an electric bicycle, including a frame 30 and the above-mentioned battery assembly. The frame 30 is provided with a receiving cavity 31, and the first battery holder 10 and the second battery holder of the battery assembly are respectively installed at opposite ends of the receiving cavity 31.

[0069] Since the electric bicycle adopts the above-mentioned battery assembly, the risk of power failure during riding is low and the failure rate of the battery assembly is also low.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery, characterized in that The invention comprises a battery body (110) and a connector (120) arranged at one end of the battery body (110), wherein the connector (120) comprises: A connector body (121) is arranged at one end of the battery body (110), the connector body (121) comprising a position limiting mounting portion (1211), the position limiting mounting portion (1211) being provided with a mounting hole (12111), the position limiting mounting portion (1211) being used to cooperate with a first battery holder (10), the first battery holder (10) being provided with a first connector (11); A second connector (122) is slidably mounted on the connector body (121), at least a portion of the second connector (122) is slidably disposed in the mounting hole (12111), and the second connector (122) is connected to the first connector (11); An elastic member (123) is disposed in the connector body (121), and the elastic member (123) is configured to always apply pressure to the second connector (122) so that the second connector (122) can always be in close contact with the first connector (11).

2. The battery according to claim 1, characterized in that The connector body (121) is provided with a mounting groove (1212) opposite to the mounting hole (12111); the second connector (122) comprises a connecting portion (1221) and a limiting portion (1222) which are connected to each other; the connecting portion (1221) is slidably arranged in the mounting hole (12111); the limiting portion (1222) is slidably arranged in the mounting groove (1212); the elastic member (123) is arranged in the mounting groove (1212); one end of the elastic member (123) abuts against the bottom wall of the mounting groove (1212); and the other end abuts against the bottom of the limiting portion (1222).

3. The battery according to claim 2, characterized in that The connector body (121) further comprises a supporting plate (1213), wherein the supporting plate (1213) is detachably connected to the position limiting mounting portion (1211) and is arranged opposite to the mounting hole (12111), and the supporting plate (1213) and the position limiting mounting portion (1211) form the mounting groove (1212).

4. The battery according to claim 3, characterized in that The supporting plate (1213) is provided with a limiting groove (12131), and one end of the elastic member (123) is installed in the limiting groove (12131).

5. The battery according to claim 1, characterized in that The second connector (122) comprises a connecting portion (1221) and a limiting portion (1222) which are connected to each other, wherein the connecting portion (1221) is slidably arranged in the mounting hole (12111), and the limiting portion (1222) can abut against the limiting mounting portion (1211) to limit the sliding distance of the connecting portion (1221).

6. The battery according to claim 1, characterized in that A sealing member (124) is provided between the second connector (122) and the inner peripheral wall of the mounting hole (12111).

7. The battery according to claim 6, characterized in that An annular groove (12112) is provided on the inner peripheral wall of the mounting hole (12111), part of the sealing member (124) is installed in the annular groove (12112), and the part of the sealing member (124) outside the annular groove (12112) is slidably attached to the second connector (122).

8. The battery according to any one of claims 1 to 7, characterized in that One of the first connector (11) and the second connector (122) is provided with a connection hole (1223), and the other is provided with a connection rib (12), and the connection rib (12) is inserted into the connection hole (1223).

9. The battery according to any one of claims 1 to 7, characterized in that The elastic member (123) is a spring, a rubber pad or a wave pad.

10. A battery assembly, characterized in that It comprises a first battery holder (10), a second battery holder and a battery (100) according to any one of claims 1 to 9, wherein a connector (120) of the battery (100) is connected to the first battery holder (10), and the other end of the battery (100) is connected to the second battery holder.

11. An electric bicycle, characterized in that: It comprises a vehicle frame (30) and the battery assembly according to claim 10, wherein the vehicle frame (30) is provided with a receiving cavity (31), and a first battery seat (10) and a second battery seat of the battery assembly are respectively mounted at opposite ends of the receiving cavity (31).

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