Battery and electric two-wheeled vehicle

Abstract

The utility model discloses a battery and electric two-wheeled vehicle relates to electric two-wheeled vehicle technical field, wherein the battery includes box body and battery cell module, box body opposite two inner side wall is equipped with a plurality of groove, the top end of groove passes through setting, battery cell module is located in box body, battery cell module includes module support and battery cell unit, the battery cell unit is located in the battery cell module support, battery cell unit is located in the battery cell module support, the battery cell unit is located in the battery cell module support, the battery cell unit is located in the battery cell module support. The module support comprises a mounting plate, the outer side wall of the mounting plate is provided with a convex part corresponding to the groove, the convex part is inserted into the groove in a matched manner and can be taken out from the top end of the groove, the battery cell unit is connected to the module support, and gaps exist between the outer side wall of the battery cell unit and the inner side wall of the box body and between the outer side wall of the mounting plate and the inner side wall of the box body; the battery cell unit comprises a plurality of battery cells arranged side by side; according to the battery and the electric two-wheeled vehicle disclosed by the utility model, the battery cell module can be conveniently taken out and put in, and the movement of the battery cell module can be reduced, so that the battery cell module is more stably mounted.

Description

Technical Field

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

[0002] In recent years, electric two-wheeled vehicles have become one of the main means of transportation for people's daily travel. The power source of electric two-wheeled vehicles is batteries. The battery generally includes a case and a battery cell module. The battery cell module is accommodated in the case. The battery cell module includes a module bracket and a battery cell unit installed on the module bracket. The battery cell unit includes a plurality of battery cells arranged side by side.

[0003] Existing batteries have the following disadvantages: if the outer wall of the battery cell module is in close contact with the inner wall of the box, there will be a large friction resistance between the battery cell module and the box, which makes it difficult to take and place the battery cell module, which is time-consuming and labor-intensive; if there is a gap between the outer wall of the battery cell module and the inner wall of the box, the battery cell module is easy to move, resulting in unstable installation. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery that is not only convenient for taking out and putting in a battery module, but also can reduce the movement of the battery module, making the battery module installation more stable.

[0005] The utility model also provides an electric two-wheeled vehicle with the battery.

[0006] According to the battery of the first aspect of the utility model, the embodiment comprises a box body and a battery cell module, wherein two opposite inner side walls of the box body are provided with a plurality of grooves, the top ends of the grooves are penetrated, the battery cell module is located in the box body, the battery cell module comprises a module bracket and a battery cell unit, the module bracket comprises a mounting plate, the outer side wall of the mounting plate is provided with a convex portion corresponding to the groove, the convex portion is inserted in the groove and can be taken out from the top end of the groove, the battery cell unit is connected to the module bracket, and there is a gap between the outer side wall of the battery cell unit and the outer side wall of the mounting plate and the inner side wall of the box body, and the battery cell unit comprises a plurality of battery cells arranged side by side.

[0007] The battery according to the embodiment of the utility model has at least the following beneficial effects:

[0008] In the utility model, after the battery cell module is placed in the box, the protrusions on both sides of the mounting plate of the battery cell module are inserted into the grooves of the two opposite inner walls of the box, and the cooperation between the protrusions and the grooves can limit the random movement of the battery cell module in the horizontal direction, thereby making the installation of the battery cell module more stable, and only the protrusions of the battery cell module contact the side walls of the grooves, and there are gaps between the outer walls of the battery cell unit and the outer walls of the mounting plate and the inner walls of the box, thereby reducing the friction between the battery cell module and the inner walls of the box, so that it is more convenient and labor-saving to take out or put in the battery cell module.

[0009] According to some embodiments of the utility model, the top surface of the protrusion is lower than the top surface of the box body, the protrusion is provided with a first connecting hole, the bottom surface of the groove is provided with a second connecting hole, and the first connecting hole and the second connecting hole are used to install fasteners.

[0010] According to some embodiments of the present invention, the battery further includes a cover and a BMS module, the cover is connected to the top of the box, and the BMS module is arranged on a side of the cover close to the box.

[0011] According to some embodiments of the utility model, an installation cavity is formed on one side of the cover body close to the box body, the BMS module is installed in the installation cavity, the bottom surface of the BMS module is higher than the top surface of the box body, and the top surface of the module bracket is lower than the top surface of the box body.

[0012] According to some embodiments of the present invention, a plurality of support columns are disposed on the top surface of the installation cavity, and the BMS module is connected to the bottom ends of the plurality of support columns.

[0013] According to some embodiments of the utility model, a bolt is installed between the BMS module and the bottom end of the support column, and the bolt sleeve is provided with two elastic sleeves, and the two elastic sleeves are respectively located above and below the BMS module.

[0014] According to some embodiments of the utility model, the inner side wall of the box body is provided with multiple connecting parts, the cover body is connected to the connecting parts by fasteners, the outer side wall of the mounting plate is provided with the protrusion and a clearance groove is provided corresponding to the connecting part, and there is a gap between the side wall of the clearance groove and the connecting part.

[0015] According to some embodiments of the present invention, an annular sealing groove is provided on the bottom surface of the cover body or the top surface of the box body, and the annular sealing groove extends along the circumference of the cover body, and the annular sealing groove is used to install a sealing ring.

[0016] According to some embodiments of the present invention, an insulating plate is provided on the outer side and the bottom end of the battery cell unit; and / or, EVA foam is provided between two adjacent battery cells.

[0017] The electric two-wheeled vehicle according to the second embodiment of the utility model comprises the battery described in the first embodiment.

[0018] The electric two-wheeled vehicle according to the embodiment of the utility model has at least the following beneficial effects:

[0019] With the battery of the first aspect of the utility model, after the battery cell module is placed in the box, the protrusions on both sides of the mounting plate of the battery cell module are inserted into the grooves of the two opposite inner walls of the box, and the cooperation between the protrusions and the grooves can limit the random movement of the battery cell module in the horizontal direction, thereby making the installation of the battery cell module more stable, and only the protrusions of the battery cell module contact the side walls of the groove, and there is a gap between the outer wall of the battery cell unit and the outer wall of the mounting plate and the inner wall of the box, thereby reducing the friction between the battery cell module and the inner wall of the box, so that it is more convenient and labor-saving to take out or put in the battery cell module.

[0020] Additional aspects and advantages of the present invention will be partially given in the following description, and some of the additional aspects and advantages will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of the overall structure of the battery of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the battery after the cover is removed;

[0024] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0025] Figure 4 It is a structural schematic diagram of a battery cell module;

[0026] Figure 5 is a schematic diagram of the structure of the cover;

[0027] Figure 6 This is a schematic diagram of one of the installation methods of the BMS module.

[0028] Figure Number:

[0029] Box body 100; groove 101; connecting portion 102;

[0030] Cell module 200; module support 201; cell unit 202; mounting plate 203; protrusion 204; cell 205; first connection hole 206; clearance groove 207; insulating plate 208; busbar 209; isolation wall 210;

[0031] Cover 300; mounting cavity 301; support column 302; bolt 303; elastic sleeve 304; annular sealing groove 305; power terminal 306; communication socket 307; balance socket 308; handle 309;

[0032] BMS module 400. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments 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.

[0034] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the 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 a limitation on the present invention.

[0035] In the description of the present utility model, "a plurality" refers to two or more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference below Figures 1 to 6 A battery and an electric two-wheeled vehicle according to embodiments of the present invention are described.

[0038] According to the battery of the first embodiment of the utility model, Figures 1 to 5 As shown, it includes a box body 100 and a battery cell module 200 .

[0039] Among them, the box body 100 can be a square structure or other suitable shapes. A accommodating cavity with an open top is formed in the box body 100. The two opposite inner walls of the box body 100 are each provided with a plurality of grooves 101. For example, each of the two opposite inner walls of the box body 100 can be provided with four grooves 101, and the top of the groove 101 is penetrated.

[0040] The battery cell module 200 is located in the box 100. The battery cell module 200 includes a module bracket 201 and a battery cell unit 202. The module bracket 201 includes a mounting plate 203. The mounting plate 203 can be arranged horizontally. The outer wall of the mounting plate 203 is provided with a protrusion 204 corresponding to the groove 101. The protrusion 204 is inserted into the groove 101 and can be taken out from the top of the groove 101. The side wall of the protrusion 204 can be attached to the side wall of the groove 101. The battery cell unit 202 is connected to the module bracket 201. There is a gap between the outer wall of the battery cell unit 202 and the outer wall of the mounting plate 203 and the inner wall of the box 100. The battery cell unit 202 includes a plurality of battery cells 205 arranged side by side. The battery cells 205 are used to store electrical energy.

[0041] In the present invention, after the battery cell module 200 is placed in the box body 100, the protrusions 204 on both sides of the mounting plate 203 of the battery cell module 200 are inserted into the grooves 101 of the two opposite inner side walls of the box body 100. The cooperation between the protrusions 204 and the grooves 101 can limit the battery cell module 200 from moving randomly in the horizontal direction, thereby making the installation of the battery cell module 200 more stable. In addition, only the protrusions 204 of the battery cell module 200 contact the side walls of the grooves 101, and there are gaps between the outer walls of the battery cell unit 202 and the outer walls of the mounting plate 203 and the inner walls of the box body 100, thereby making the friction between the battery cell module 200 and the inner wall of the box body 100 smaller, thereby making it more convenient and labor-saving to take out or put in the battery cell module 200.

[0042] In some embodiments of the present invention, Figure 3 As shown, the top surface of the protrusion 204 is lower than the top surface of the box body 100, the protrusion 204 is provided with a first connection hole 206, and the bottom surface of the groove 101 is provided with a second connection hole, and the first connection hole 206 and the second connection hole are used to install fasteners. In this embodiment, the fastener is installed between the first connection hole 206 and the second connection hole, so that the battery module 200 and the box body 100 can be fixed, so that the battery module 200 can be further fixed, and the battery module 200 can be further prevented from moving at will. In addition, since the first connection hole 206 and the second connection hole are arranged vertically, it is also convenient to install the fastener.

[0043] In some embodiments of the present invention, Figure 3As shown, the side wall of the groove 101 is set as an inner concave arc surface, and the side wall of the convex part 204 is set as an outer convex arc surface. In this embodiment, such a configuration can reduce the friction between the groove 101 and the convex part 204 when taking out or putting in the battery module 200, thereby making it more convenient and labor-saving to take out or put in the battery module 200.

[0044] In some embodiments of the present invention, Figure 1 and Figure 5 As shown, the battery further includes a cover 300 and a BMS module 400, the cover 300 is connected to the top of the box 100, and the BMS module 400 is arranged on one side of the cover 300 close to the box 100. The cover 300 is used to open and close the box 100, and the cover 300 can be connected to the top of the box 100 by a fastener, and the cover 300 can also be snap-fitted with the top of the box 100. In addition, one side of the cover 300 can also be rotatably connected to one side of the top of the box 100, and the other side of the cover 300 can be connected or snap-fitted with the other side of the top of the box 100 by a fastener. The cover 300 may be provided with a power terminal 306, which is used to connect a power line, the cover 300 may be provided with a communication socket 307, which is used to connect to a communication device, the cover 300 may be provided with a balance socket 308, which is used to connect to a balancer, and the cover 300 may be provided with a handle 309 for easy carrying. The BMS module 400 may be connected, clamped or welded to the side of the cover 300 close to the box 100 by fasteners.

[0045] In this embodiment, the BMS module 400 includes a mounting substrate and a battery management system disposed on the mounting substrate. BMS is the English abbreviation for battery management system. The BMS module 400 can improve the utilization rate of the battery, prevent the battery from being overcharged and over-discharged, extend the service life of the battery, and monitor the state of the battery. The power line, balancing harness, sampling harness, and communication harness of the battery can all be connected to the BMS. The power line is also connected to the total positive bus on the battery module 200 and to the total negative bus on the battery module 200. In addition, the BMS module 400 is connected to the cover 300, and the BMS module 400 can be installed synchronously when the cover 300 is installed, which makes assembly more convenient. Finally, the BMS module 400 and the power terminal 306, the balancing socket 308, and the communication socket 307 are all disposed on the cover 300, so that the entanglement and breakage of the harness can be reduced when the cover 300 is taken out, and the practicality is better.

[0046] In some embodiments of the present invention, Figure 5As shown, a mounting cavity 301 is formed on one side of the cover 300 close to the box 100 , and the BMS module 400 is installed in the mounting cavity 301 . The bottom surface of the BMS module 400 is higher than the top surface of the box 100 , and the top surface of the module bracket 201 is lower than the top surface of the box 100 . For example, the cover body 300 can be arched upward to form an installation cavity 301, and the BMS module 400 is located in the installation cavity 301 of the cover body 300, so that there is no need to compete with the battery cell module 200 for the space in the box body 100, and the bottom surface of the BMS module 400 is higher than the top surface of the box body 100, and the top surface of the module bracket 201 is lower than the top surface of the box body 100, so that there is a larger gap between the BMS module 400 and the battery cell module 200, thereby reducing the situation where the battery cell module 200 and the BMS module 400 interfere with each other and affect the work, for example, it can reduce the mutual interference between the electric field of the battery cell module 200 and the electric field of the BMS module 400, or it can reduce the mutual interference between the heat generated by the battery cell module 200 and the heat generated by the BMS module 400, thereby improving practicality.

[0047] In some embodiments of the present invention, Figure 5 As shown, the top surface of the installation cavity 301 is provided with a plurality of support columns 302, and the BMS module 400 is connected to the bottom ends of the plurality of support columns 302. For example, four support columns 302 may be provided and located at four corners of the BMS module 400, the support columns 302 may be provided with mounting holes, and the BMS module 400 may be connected to the support columns 302 by bolts 303. In this embodiment, the support columns 302 are provided, which not only facilitates the installation of the BMS module 400, but also enables a gap to exist between the BMS module 400 and the top surface of the installation cavity 301, thereby achieving a better heat dissipation effect.

[0048] In some embodiments of the present invention, Figure 6 As shown, a bolt 303 is installed between the BMS module 400 and the bottom end of the support column 302, and the bolt 303 is sleeved with two elastic sleeves 304, and the two elastic sleeves 304 are respectively located above and below the BMS module 400. In the prior art, the BMS module 400 is generally fixed directly by the bolt 303, and no vibration reduction structure is set. During use, vibration is prone to occur, resulting in failure of the fastening of the BMS module 400 or failure of the wiring harness connection.

[0049] In this embodiment, two elastic sleeves 304 are arranged outside the bolt 303. The two elastic sleeves 304 are respectively located above and below the BMS module 400. The elastic sleeves 304 can be elastic rubber sleeves, elastic washers or spring sleeves, etc. In this way, the vibration of the BMS module 400 can be effectively reduced, thereby reducing the fastening failure of the BMS module 400 or the wiring harness connection failure.

[0050] In some embodiments of the present invention, Figure 3 As shown, the inner side wall of the box body 100 is provided with a plurality of connecting parts 102, the cover body 300 is connected to the connecting part 102 by fasteners, the outer side wall of the mounting plate 203 is provided with a convex part 204 and the connecting part 102 is provided with a clearance groove 207, and there is a gap between the side wall of the clearance groove 207 and the connecting part 102. The connecting part 102 is provided, and the cover body 300 and the connecting part 102 are connected by fasteners. Compared with directly connecting the cover body 300 to the side wall of the box body 100, the structural strength is higher and the box body 100 is not easily damaged. The outer side wall of the mounting plate 203 is provided with a convex part 204 and the connecting part 102 is provided with a clearance groove 207, and there is a gap between the side wall of the clearance groove 207 and the connecting part 102. In this way, the friction resistance between the mounting plate 203 and the connecting part 102 can be reduced, so that it is more convenient and labor-saving to take out or put in the battery cell module 200.

[0051] In some embodiments of the present invention, Figure 5 As shown, an annular sealing groove 305 is provided on the bottom surface of the cover body 300 or the top surface of the box body 100. The annular sealing groove 305 extends along the circumference of the cover body 300 and is used to install a sealing ring. The annular sealing groove 305 is provided, and a sealing ring is installed in the annular sealing groove 305. When the cover body 300 is closed over the box body 100, the sealing ring can play a sealing role.

[0052] In some embodiments of the present invention, Figure 4 As shown, the outer side and the bottom of the battery cell unit 202 are both provided with an insulating plate 208. In this embodiment, the outer side and the bottom of the battery cell unit 202 are both provided with an insulating plate 208, which has a better insulation effect, can reduce short circuits and leakage, and has better safety.

[0053] It should be noted that the insulating plate 208 may be an epoxy resin plate or an insulating rubber plate, etc.

[0054] In some embodiments of the utility model, EVA foam is provided between two adjacent battery cells 205. The EVA foam has low hardness and high resilience, and can absorb the battery expansion stress to play a buffering role. When the battery cell 205 heats up out of control, the EVA foam can play a heat insulating role, inhibit heat diffusion, and delay the occurrence of accidents. When the battery cell 205 catches fire, the flame retardant effect of the EVA foam can delay the spread of fire and increase the escape time. The EVA foam has excellent resilience and a wide compression ratio, and can be used for positioning.

[0055] In some embodiments of the present invention, Figure 2 and Figure 3As shown, the battery cell module 200 may also include a plurality of bus bars 209 , which are disposed on the mounting plate 203 , and the battery cells 205 are connected to the bus bars 209 . For example, the battery cells 205 and the bus bars 209 may be continuously laser welded to ensure connection strength and reliability, reduce contact resistance, and improve consistency of the battery cell module 200 .

[0056] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, there are two rows of busbars 209, and the module bracket 201 is provided with an isolation wall 210 on the side close to the two rows of busbars 209. The isolation wall 210 can be made of an electrical insulating material, and the isolation wall 210 can ensure sufficient electrical clearance and creepage distance, and has better safety.

[0057] The electric two-wheeled vehicle according to the second embodiment of the utility model comprises the battery of the first embodiment.

[0058] According to the electric two-wheeled vehicle of the embodiment of the utility model, by adopting the battery of the embodiment of the first aspect of the utility model, after the battery cell module 200 is placed in the box body 100, the protrusions 204 on both sides of the mounting plate 203 of the battery cell module 200 are inserted into the grooves 101 of the two opposite inner walls of the box body 100, and the battery cell module 200 can be restricted from moving randomly in the horizontal direction by the cooperation between the protrusions 204 and the grooves 101, so that the battery cell module 200 is installed more stably, and only the protrusions 204 of the battery cell module 200 contact the side walls of the grooves 101, and there are gaps between the outer walls of the battery cell unit 202 and the outer walls of the mounting plate 203 and the inner walls of the box body 100, thereby making the friction between the battery cell module 200 and the inner walls of the box body 100 smaller, so that it is more convenient and labor-saving to take out or put in the battery cell module 200.

[0059] It should be noted that, since the electric two-wheeled vehicle can adopt all the technical solutions of the battery of the first embodiment above, it at least has all the beneficial effects brought by the technical solutions of the first embodiment above, and these additional beneficial effects will not be repeated here.

[0060] It is understandable that other structures and operations of the electric two-wheeled vehicle according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0061] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A battery, characterized in that: include: A box body, wherein two inner side walls opposite to each other are each provided with a plurality of grooves, and the top ends of the grooves are penetrated; A battery cell module is located in the box, the battery cell module includes a module bracket and a battery cell unit, the module bracket includes a mounting plate, the outer wall of the mounting plate is provided with a convex portion corresponding to the groove, the convex portion is inserted into the groove and can be taken out from the top of the groove, the battery cell unit is connected to the module bracket, and there is a gap between the outer wall of the battery cell unit and the outer wall of the mounting plate and the inner wall of the box, and the battery cell unit includes a plurality of battery cells arranged side by side.

2. The battery according to claim 1, characterized in that The top surface of the protrusion is lower than the top surface of the box body, the protrusion is provided with a first connecting hole, the bottom surface of the groove is provided with a second connecting hole, and the first connecting hole and the second connecting hole are used to install a fastener.

3. The battery according to claim 1 or 2, characterized in that: The battery also includes: A cover body connected to the top of the box body; The BMS module is arranged on a side of the cover body close to the box body.

4. The battery according to claim 3, characterized in that A mounting cavity is formed on one side of the cover body close to the box body, and the BMS module is mounted in the mounting cavity. The bottom surface of the BMS module is higher than the top surface of the box body, and the top surface of the module bracket is lower than the top surface of the box body.

5. The battery according to claim 4, characterized in that A plurality of support columns are disposed on the top surface of the installation cavity, and the BMS module is connected to the bottom ends of the plurality of support columns.

6. The battery according to claim 5, characterized in that A bolt is installed between the BMS module and the bottom end of the support column, and the bolt sleeve is provided with two elastic sleeves, and the two elastic sleeves are respectively located above and below the BMS module.

7. The battery according to claim 3, characterized in that The inner side wall of the box body is provided with a plurality of connecting parts, the cover body is connected to the connecting parts by fasteners, the outer side wall of the mounting plate provided with the protrusion is provided with a clearance groove corresponding to the connecting part, and there is a gap between the side wall of the clearance groove and the connecting part.

8. The battery according to claim 3, characterized in that An annular sealing groove is provided on the bottom surface of the cover body or the top surface of the box body. The annular sealing groove extends along the circumference of the cover body and is used for installing a sealing ring.

9. The battery according to claim 1 or 2, characterized in that: The outer side and the bottom end of the battery cell are both provided with insulating plates; and / or, EVA foam is arranged between two adjacent battery cells.

10. An electric two-wheeled vehicle, characterized in that: Comprising the battery as claimed in any one of claims 1 to 9.

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