CN220439768U

CN220439768U - Battery of electric bicycle

Info

Publication number: CN220439768U
Application number: CN202321709940.9U
Authority: CN
Inventors: 雷明珠; 张洋
Original assignee: Huzhou Kuai Donkey Technology Co ltd
Current assignee: Huzhou Kuai Donkey Technology Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2024-02-02
Anticipated expiration: 2033-07-03

Abstract

The utility model relates to an electric bicycle battery, which comprises a battery box, wherein the upper end part of the battery box is fixedly connected with a box cover, the inner bottom wall of the battery box is fixedly connected with a partition plate, a battery pack is placed on the inner side of the battery box, a protection component is arranged on the box cover and the battery box and comprises a heat radiation plate, the inner part of the box cover is provided with a mounting hole, the heat radiation plate is fixedly connected on the inner side of the mounting hole, and the inner side of the mounting hole is rotationally connected with a handle. This electric bicycle battery supports the piece and can drive the cover pole and produce the extrusion to first buffer spring and second buffer spring, and the first buffer spring that resets and second buffer spring can offset the power that partial vibration produced, come to cushion the protection to the group battery, and a plurality of support piece, cover pole and support the pole and can with the group battery heat transfer that the group battery produced in the use of charging to the heat-conducting plate dispel the heat through the heat-conducting plate transfer to heating panel department, reduce the heat that remains on the group battery to improve the heat dissipation and the protectiveness of group battery.

Description

Battery of electric bicycle

Technical Field

The utility model relates to the technical field of batteries, in particular to an electric bicycle battery.

Background

The electric bicycle is a electromechanical integrated personal transportation means with a motor, a controller, a storage battery, a handle bar, and other operating components and a display instrument system on the basis of a common bicycle by taking the storage battery as an auxiliary energy source, and the battery used in the electric bicycle is a vehicle-mounted energy source for providing electric bicycle energy, and the existing electric bicycle mainly adopts a lead-acid battery combination or a lithium ion battery for supplying power.

Lithium ion batteries are secondary batteries (rechargeable batteries) that operate primarily by means of lithium ions moving between a positive electrode and a negative electrode, and in the charge and discharge process L i + is inserted and extracted back and forth between the two electrodes: during charging, L i + is deintercalated from the positive electrode, is embedded into the negative electrode through the electrolyte, and is in a lithium-rich state; in contrast, when discharging, lithium ion batteries are divided into metal-shell lithium batteries and soft-pack lithium batteries, wherein the soft-pack lithium batteries are only liquid lithium ion batteries sleeved with a layer of polymer shell.

Most of the existing electric vehicle lithium batteries can be taken out of the electric vehicle, so that users can charge the electric vehicle conveniently, such as the patent with the bulletin number of CN115224341A, the disclosed electric vehicle lithium battery structure comprises a battery body, a movable roller and a connecting structure for connecting the movable roller and the battery body, the connecting structure is connected with the movable roller and the battery body, a telescopic pull rod is arranged on the battery body, the connecting structure comprises a rotating shaft, a connecting support rod and a shaft motor, one end of the connecting support rod is connected to the rotating shaft, the connecting support rod and the shaft motor are arranged in a combined mode by arranging the connecting structure into the rotating shaft, the connecting support rod and the shaft motor, and the movable roller is arranged into an outer rod, a middle rod and an inner rod by arranging the movable roller into the outer wheel, the middle wheel, the inner wheel and the connecting support rod, so that the climbing process can be realized in a process of climbing stairs can be realized by matching the shaft motor and the rotating shaft.

However, in the above-mentioned application, when the electric motor car receives vibrations, unable protection battery in the battery case, when the battery receives violently rocking, impaired, and influence the life of group battery to in soft packet of lithium ion battery core direct loading battery shell, after the group of the equipment again, not have the connection between the battery core, receive external factor influence, thereby very easily take place the battery core and rock the utmost point ear fracture, further influence group battery life, so put forward an electric bicycle battery and solve above-mentioned problem.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an electric bicycle battery which has the advantages of long service life and the like and solves the problem of poor service life.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the electric bicycle battery comprises a battery box, wherein the upper end part of the battery box is fixedly connected with a box cover, the inner bottom wall of the battery box is fixedly connected with a partition plate, a battery pack is placed on the inner side of the battery box, and a protection assembly is arranged on the box cover and the battery box;

the protection assembly comprises a heat radiation plate, wherein a mounting hole is formed in the box cover, the heat radiation plate is fixedly connected to the inner side of the mounting hole, a handle is rotatably connected to the inner side of the mounting hole, mounting grooves are formed in the upper end parts of the partition plate and the battery box, a heat conducting plate is fixedly connected to the inner side of the mounting grooves, a supporting rod is fixedly connected to the partition plate and the battery box in a sliding manner, a sleeve rod is fixedly connected to the outer side of the supporting rod, a first buffer spring is fixedly connected between the outer side of the sleeve rod and the partition plate and the battery box respectively, a second buffer spring is fixedly connected between one end of the supporting rod, which is located at the inner side of the sleeve rod, and a supporting block, one end of which is away from the supporting rod, of which is in contact with the battery pack is fixedly connected with;

the battery pack comprises a battery shell, a flexible package lithium ion battery cell is placed on the inner side of the battery shell, organic silica gel is filled between the flexible package lithium ion battery cell and the inner side of the battery shell, an embedded copper sheet support is fixedly arranged on the inner bottom wall of the battery shell, and one end of the copper sheet penetrates through the battery shell and is fixedly connected with the embedded copper sheet support.

Further, the upper end of the heat conducting plate is abutted against the upper end of the heat radiating plate, and the abutting rod penetrates through one end of the partition plate and one end of the battery box respectively to be abutted against the heat conducting plate.

Further, the outside fixedly connected with rubber sleeve of supporting the piece, the upper end and the lower tip that support the piece are the arc.

Further, the supporting block is a copper block, the loop bar and the supporting bar are metal bars, connecting holes with one ends communicated with the mounting groove are formed in the separation plate and the battery box, and the supporting bar is connected to the connecting holes in a sliding mode.

Further, the number of the supporting rods is a plurality of, and the supporting rods are symmetrically distributed on the partition plate and the battery box.

Further, the battery shell is an ABS shell, and the silicone rubber is poured into one third of the inner part of the battery shell.

Further, the copper sheet on the pre-buried copper sheet support is fixedly connected with the lug of the flexible package lithium ion battery cell in a penetrating way.

Further, the handle is U-shaped, the handle is connected to the inner side of the mounting hole through the rotating shaft in a rotating mode, and the U-shaped end of the handle is fixedly connected with a heat insulation rubber pad.

Further, the inner diameter of the loop bar is matched with the outer diameter of the supporting bar, and the inner side of the loop bar is attached to the outer side of the supporting bar.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this electric bicycle battery, place the inboard group battery of battery box and support in the battery box by supporting the piece after contradicting, can cushion the group battery and support in the battery box, keep off the electric motor car when jolting vibration appears in the operation in-process, the group battery can extrude the piece that supports, and support the piece and can drive the cover pole and produce the extrusion to first buffer spring and second buffer spring, the first buffer spring that resets can offset the power that partial vibration produced with the second buffer spring, come to cushion the protection to the group battery, and a plurality of supports the piece, the cover pole and support the pole and can with the heat transfer that the group battery produced in the use of charging to the heat-conducting plate dispels the heat through the heat-conducting plate transfer to heating panel department, reduce the heat that remains on the group battery, thereby improve the heat dispersion and the protectiveness of group battery.

2. According to the electric bicycle battery, as the flexible package lithium ion battery core is wrapped and fixed by the organic silica gel filled inside the battery shell, and the battery shell is the ABS shell, the whole battery pack has certain anti-shock and anti-pressure performance, auxiliary materials of the battery pack can be reduced, the safety of the whole battery pack is high, the energy density is high, the stability is good, and the failure rate is low.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged view of the utility model at A in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a battery structure of the present utility model;

fig. 4 is a bottom cross-sectional view of the battery pack structure of the present utility model.

In the figure: 1. a battery case; 2. a partition plate; 3. a battery pack; 31. a battery case; 32. flexibly packaging the lithium ion battery core; 33. an organic silica gel; 34. copper sheets; 35. embedding a copper sheet bracket; 4. a box cover; 5. a protective assembly; 51. a mounting hole; 52. a heat dissipation plate; 53. a handle; 54. a heat conductive plate; 55. a mounting groove; 56. a supporting rod; 57. a first buffer spring; 58. abutting blocks; 59. a loop bar; 510. a rubber sleeve; 511. and a second buffer spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, an electric bicycle battery in the present embodiment includes a battery case 1, a case cover 4 fixedly connected to an upper end of the battery case 1, a partition plate 2 fixedly connected to an inner bottom wall of the battery case 1, a battery pack 3 placed inside the battery case 1, and a protection assembly 5 disposed on the case cover 4 and the battery case 1;

the protection component 5 comprises a heat radiation plate 52, a mounting hole 51 is formed in the box cover 4, the heat radiation plate 52 is fixedly connected to the inner side of the mounting hole 51, a handle 53 is rotatably connected to the inner side of the mounting hole 51, mounting grooves 55 are formed in the upper end portions of the partition plate 2 and the battery box 1, a heat conducting plate 54 is fixedly connected to the inner side of the mounting grooves 55, supporting rods 56 are slidably connected to the partition plate 2 and the battery box 1, a sleeve rod 59 is slidably connected to the outer side of the supporting rods 56, a first buffer spring 57 is fixedly connected between the outer side of the sleeve rod 59 and the partition plate 2 and the battery box 1 respectively, a second buffer spring 511 is fixedly connected between one end of the supporting rods 56, which is located on the inner side of the sleeve rod 59, and a supporting block 58, of which one end is far away from the supporting rods 56 is fixedly connected with one end of the sleeve rod 59 and is abutted against the battery pack 3.

In this embodiment, after the battery pack 3 placed inside the battery case 1 is abutted by the abutment block 58, the battery pack 3 can be supported in the battery case 1 in a buffering manner, when the electric vehicle is in jolt vibration during operation, the battery pack 3 can squeeze the abutment block 58, the abutment block 58 can drive the loop bar 59 to squeeze the first buffer spring 57 and the second buffer spring 511, the reset first buffer spring 57 and the second buffer spring 511 can counteract the force generated by partial vibration to buffer and protect the battery pack 3, and the plurality of abutment blocks 58, the loop bar 59 and the abutment bar 56 can transfer the heat generated by the battery pack 3 during charging to the heat conducting plate 54 for dissipating heat through the heat conducting plate 54 to the heat dissipating plate 52.

The upper end of the heat conducting plate 54 abuts against the upper end of the heat dissipating plate 52, and the supporting rod 56 penetrates through one end of the partition plate 2 and one end of the battery case 1 respectively to abut against the heat conducting plate 54, so that the heat conducted by the supporting rod 56 can be conducted to the heat dissipating plate 52 through the heat conducting plate 54 to be dissipated.

In addition, the rubber sleeve 510 is fixedly connected to the outer side of the abutment block 58, and the upper end and the lower end of the abutment block 58 are arc-shaped, so that the abutment block 58 can be extruded to move to the side close to the battery case 1 and the partition plate 2 when the battery pack 3 is inserted into the battery case 1.

Secondly, the supporting block 58 is a copper block, and the sleeve rod 59 and the supporting rod 56 are both metal rods, so that the supporting block 58, the sleeve rod 59 and the supporting rod 56 can conduct heat, the separation plate 2 and the battery box 1 are provided with connecting holes, one ends of the connecting holes are communicated with the mounting groove 55, the supporting rod 56 is slidably connected to the connecting holes, when the battery pack 3 is vibrated to shake, the sleeve rod 59 can be extruded to slide outside the supporting rod 56, the first buffer spring 57 and the second buffer spring 511 are extruded, and the supporting rod 56 is always in contact with the heat conducting plate 54.

Then, the number of the supporting rods 56 is a plurality, the supporting rods 56 are symmetrically distributed on the partition plate 2 and the battery box 1, and the battery assembly 3 is supported, buffered and radiated through the supporting rods 56 and the sleeve rods 59.

Then, the handle 53 is U-shaped, and the handle 53 is connected to the inner side of the mounting hole 51 through the rotation of the rotating shaft, and the U-shaped end of the handle 53 is fixedly connected with a heat insulation rubber pad, so that a user can conveniently plug the battery box 1 into a battery compartment of the electric vehicle.

Finally, the inner diameter of the sleeve rod 59 is matched with the outer diameter of the supporting rod 56, and the inner side of the sleeve rod 59 is attached to the outer side of the supporting rod 56, so that the sleeve rod 59 can contact with the supporting rod 56 to conduct heat, and the sleeve rod 59 can stably slide on the outer side of the supporting rod 56.

Referring to fig. 3-4, in this embodiment, the battery pack 3 includes a battery shell 31, the battery shell 31 is an ABS shell, a flexible package lithium ion battery core 32 is disposed on the inner side of the battery shell 31, an organic silica gel 33 is filled between the flexible package lithium ion battery core 32 and the inner side of the battery shell 31, the organic silica gel 33 is poured at one third of the inner side of the battery shell 31, an embedded copper sheet support 35 is fixedly mounted on the inner bottom wall of the battery shell 31, one end of the embedded copper sheet support 35 is fixedly connected with a copper sheet 34 penetrating through the battery shell 31, and the copper sheet 34 on the embedded copper sheet support 35 is fixedly connected with a tab of the flexible package lithium ion battery core 32 in a penetrating manner, so that after the tab of the flexible package lithium ion battery core 32 is bent, the tab can be tiled on the copper sheet 34 for welding series-parallel connection.

In this embodiment, since the flexibly packaged lithium ion battery cell 32 is wrapped and fixed by the organic silica gel 33 filled inside the battery shell 31, and the battery shell 31 is an ABS shell, the whole battery pack 3 has a certain anti-shock and anti-pressure property, and the auxiliary materials of the battery pack 3 can be reduced, so that the whole battery pack 3 has high safety, high energy density, good stability and low failure rate.

The working principle of the embodiment is as follows:

after the battery pack 3 inserted and placed inside the battery box 1 is abutted against the abutting blocks 58, the battery pack 3 can be supported inside the battery box 1, when the electric vehicle is subjected to jolt vibration in the running process, the battery pack 3 subjected to vibration to generate jolt can extrude the abutting blocks 58, the abutting blocks 58 can drive the loop bars 59 to extrude the first buffer springs 57 and the second buffer springs 511, the reset first buffer springs 57 and the second buffer springs 511 can offset the force generated by the jolt of the battery pack 3 to buffer and protect the battery pack 3, a plurality of abutting blocks 58, loop bars 59 and the abutting bars 56 can transfer the heat generated by the battery pack 3 in the charging use process to the heat conducting plate 54 to dissipate the heat through the heat conducting plate 54, and the heat reserved on the battery pack 3 is reduced, so that the heat dissipation and the protection of the battery pack 3 are improved, and the battery pack 3 has certain anti-shock performance, the battery pack 3 can be well-packed by the soft package lithium ion battery cell 32 is fixed by the organic silica gel 33 filled inside the battery pack 31, and the battery pack 31 is an ABS (anti-shock) shell, so that the battery pack 3 has certain anti-shock performance, the high safety and high service life, the battery pack 3 has high safety and high service life, and the stability.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An electric bicycle battery, includes battery case (1), its characterized in that: the battery pack comprises a battery box (1), and is characterized in that a box cover (4) is fixedly connected to the upper end part of the battery box (1), a partition plate (2) is fixedly connected to the inner bottom wall of the battery box (1), a battery pack (3) is placed on the inner side of the battery box (1), and a protection component (5) is arranged on the box cover (4) and the battery box (1);

the protection assembly (5) comprises a heat radiation plate (52), a mounting hole (51) is formed in the box cover (4), the heat radiation plate (52) is fixedly connected to the inner side of the mounting hole (51), a handle (53) is rotatably connected to the inner side of the mounting hole (51), mounting grooves (55) are formed in the upper end portions of the partition plate (2) and the battery box (1), a heat conducting plate (54) is fixedly connected to the inner side of the mounting grooves (55), a supporting rod (56) is fixedly connected to the partition plate (2) and the battery box (1) in a sliding manner, a sleeve rod (59) is fixedly connected to the outer side of the supporting rod (56), a first buffer spring (57) is fixedly connected between one end of the inner side of the sleeve rod (59) and the inner side of the sleeve rod (59), and a second buffer spring (511) is fixedly connected to one end of the sleeve rod (59), which is far away from the supporting rod (56), of the battery box (3) is abutted against the battery pack (58);

the battery pack (3) comprises a battery shell (31), a soft package lithium ion battery cell (32) is arranged on the inner side of the battery shell (31), organic silica gel (33) is filled between the soft package lithium ion battery cell (32) and the inner side of the battery shell (31), an embedded copper sheet support (35) is fixedly arranged on the inner bottom wall of the battery shell (31), and one end of the copper sheet (34) penetrating through the battery shell (31) is fixedly connected to the embedded copper sheet support (35).

2. An electric bicycle battery according to claim 1, characterized in that: the upper end of the heat conducting plate (54) is abutted against the upper end of the heat radiating plate (52), and the abutting rod (56) penetrates through the partition plate (2) and one end of the battery box (1) respectively to be abutted against the heat conducting plate (54).

3. An electric bicycle battery according to claim 1, characterized in that: the outer side of the supporting block (58) is fixedly connected with a rubber sleeve (510), and the upper end part and the lower end part of the supporting block (58) are arc-shaped.

4. An electric bicycle battery according to claim 1, characterized in that: the supporting block (58) is a copper block, the loop bar (59) and the supporting bar (56) are metal bars, connecting holes with one ends communicated with the mounting groove (55) are formed in the separation plate (2) and the battery box (1), and the supporting bar (56) is connected to the connecting holes in a sliding mode.

5. An electric bicycle battery according to claim 1, characterized in that: the number of the supporting rods (56) is a plurality, and the supporting rods (56) are symmetrically distributed on the partition plate (2) and the battery box (1).

6. An electric bicycle battery according to claim 1, characterized in that: the battery shell (31) is an ABS shell, and the organic silica gel (33) is poured into one third of the inside of the battery shell (31).

7. An electric bicycle battery according to claim 1, characterized in that: and a copper sheet (34) on the pre-buried copper sheet support (35) is fixedly connected with the lug of the flexible package lithium ion battery core (32) in a penetrating way.

8. An electric bicycle battery according to claim 1, characterized in that: the handle (53) is U-shaped, the handle (53) is rotatably connected to the inner side of the mounting hole (51) through a rotating shaft, and the U-shaped end of the handle (53) is fixedly connected with a heat insulation rubber pad.

9. An electric bicycle battery according to claim 1, characterized in that: the inner diameter of the loop bar (59) is matched with the outer diameter of the supporting bar (56), and the inner side of the loop bar (59) is attached to the outer side of the supporting bar (56).