CN211426543U

CN211426543U - Automatic charging and discharging connecting device

Info

Publication number: CN211426543U
Application number: CN201921360993.8U
Authority: CN
Inventors: 陈勇; 高峰; 杨威
Original assignee: Wuhan Jingneng Electronic Technology Co ltd
Current assignee: Wuhan Jingneng Electronic Technology Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-09-04
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a charge-discharge automatic connecting device, including linear motion drive arrangement and detection support, be provided with on the detection support and follow the first direction and remove, be connected and transmit current's chuck mechanism with power battery's utmost point post, be provided with on the linear motion drive arrangement and bear power battery moves extremely the power battery of chuck mechanism below bears the support. The utility model provides a manual clamp utmost point post cause the problem of error, utmost point post chuck increase through clamping mechanism and the contact surface of utmost point post, realized the ability of the too big electric current of utmost point post chuck, utmost point post chuck and utmost point post automatic connection have improved the repeatability of same batch power battery group charge-discharge test.

Description

Automatic charging and discharging connecting device

Technical Field

The utility model relates to a power battery check out test set technical field specifically indicates a charge-discharge automatic connecting device.

Background

Along with the development of the quick charging technology of the electric automobile, the demand on the charging and discharging current of the power battery pack is higher and higher, so that the requirement on the capacity of the over-high current after the battery charging and discharging detection equipment is connected with the power battery is higher and higher, and therefore the stable and reliable contact between the charging and discharging detection equipment and the battery cell lug of the power battery pack and the capacity of detecting the over-high current of the device are extremely important. It is urgent to provide an automatic connection device for charging and discharging of an excessive current of a power battery pack.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art and providing an automatic charging and discharging connecting device with accurate pole connecting position and high detection precision.

For realizing the purpose, the utility model discloses a charge-discharge automatic connecting device, its characterized in that: the device comprises a linear motion driving device and a detection support, wherein a chuck mechanism which can move along a first direction, is connected with a pole of a power battery and transmits current is arranged on the detection support, and a power battery bearing support which can bear the motion of the power battery along a second direction to the lower part of the chuck mechanism is arranged on the linear motion driving device.

Furthermore, the chuck mechanism comprises a lifting driving mechanism fixed on two sides of the detection support in the third direction, a lifting plate connected with a power output end of the lifting driving mechanism, and a chuck support vertically fixed on the lifting plate, wherein a current detection plate is fixed at the top of the chuck support, and the pole chuck is fixed at the bottom of the chuck support.

Furthermore, the lifting driving mechanism comprises a lifting driving cylinder fixed on the outer surface of the detection support and a lifting guide mechanism capable of enabling the lifting plate to stably move along a first direction; the piston rod of the lifting driving cylinder is fixed on the lifting plate through a cushion block, the lifting guide mechanism comprises a linear bearing which is arranged in parallel with the lifting driving cylinder and fixed on the outer surface of the detection support and a guide shaft which is coaxially arranged in the linear bearing, and the top end of the guide shaft is fixed on the lifting plate.

Furthermore, a limiting structure for limiting the rising height of the lifting plate is further fixed on the side surface of the lifting driving cylinder, the limiting structure comprises a limiting block fixed on the side surface of the lifting driving cylinder and a limiting bolt vertically penetrating through the limiting block, the bolt head of the limiting bolt is located below the limiting block, and the top thread section of the limiting bolt is fixedly connected with the lifting plate.

Furthermore, the chuck support comprises a chuck support fixing plate which is fixed on the upper surface of the lifting plate in parallel, a connecting bolt which is perpendicular to the chuck support fixing plate is fixed on the chuck support fixing plate, the top end of the connecting bolt is fixed with the current detection plate, and the bottom end of the connecting bolt is fixed with a pole chuck which can be connected with a pole of the power battery.

Furthermore, a temperature sensor parallel to the connecting bolt is further fixed in the chuck support, and the bottom surface of the sensing end of the temperature sensor is not lower than the upper surface of the pole chuck.

Furthermore, the utmost point post chuck includes utmost point post chuck fixing base and is fixed in the utmost point post splint of the both sides of the third direction of utmost point post chuck fixing base.

Furthermore, a clamping driving mechanism is fixed on the detection support, the clamping driving mechanism is a parallel cylinder, the parallel cylinder comprises two sliding blocks capable of reciprocating along a third direction, and each sliding block is fixed with a clamping plate capable of compressing the pole clamping plate.

Furthermore, the chuck mechanism can bear 300-500A current, two pole clamping plates can be enclosed into a circular ring attached to the circumferential surface of the pole, the outer diameter of the circular ring is 23-30 mm, the thickness of the pole chuck is 11-15 mm, and the clamping force of the parallel cylinder is 100-400N.

Furthermore, the linear motion driving device is an electric sliding table, the electric sliding table comprises a positioning tray fixed at the driving end of the electric sliding table, and the power battery bearing support is fixed on the positioning tray.

The utility model has the advantages that: make the battery bear the weight of the support and bear power battery and do straight reciprocating motion through linear motion drive arrangement, power battery's utmost point post is connected through the utmost point post chuck along the chuck mechanism of first direction removal, and press from both sides tight utmost point post chuck through clamping mechanism, the problem of manual clamping utmost point post error that causes has been solved, the utmost point post chuck increases the contact surface with utmost point post through clamping mechanism, the ability of the too big electric current of utmost point post chuck has been realized, utmost point post chuck and utmost point post automatic connection, the repeatability of same batch power battery group charge-discharge test has been improved. Through changing the size of utmost point post chuck or clamping force of clamping mechanism, can further improve connecting device's overcurrent ability, satisfy the market demand that changes fast.

Drawings

Fig. 1 is a perspective view of a connecting device of the present invention;

fig. 2 is a schematic view of the clamping structure of the middle chuck mechanism and the clamping mechanism and the pole of the present invention;

fig. 3 is a front view of the middle pole column chuck of the present invention;

fig. 4 is a left side view of the middle pole column chuck of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

the device comprises a device bedplate 1, a power battery bearing support 2 (a battery supporting plate 2.2 a battery positioning frame), a detection support 3, a power battery 4, a pole 5, a pole chuck 6 (a pole chuck fixing seat 6.1, a pole clamping plate 6.2, a clamping positioning plate 6.3), an electric sliding table 7 (a cylinder body 7.1, a driving motor 7.2, a slideway 7.3, a sliding table 7.4), a lifting plate 8, a chuck support 9 (a chuck support fixing plate 9.1, a connecting bolt 9.2, a chuck support straight plate 9.3), a current detection plate 10, a lifting driving cylinder 11, a cushion block 12, a linear bearing 13, a guide shaft 14, a limiting block 15, a limiting bolt 16, a temperature sensor 17, a parallel cylinder 18, a sliding block 19, a sliding block, a clamping plate 20 and a positioning tray 21.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

The applicant finds that the existing charging and discharging test equipment on the market is generally connected with a battery cell pole lug of a power battery pack in a manual wiring mode of mounting a screw on an OT terminal through an alligator clip, the pole contact area of a detection device and the power battery pack is small, the requirement of overlarge current cannot be met, and meanwhile, the detection precision of the charging and discharging test equipment is influenced due to the size difference of the pole columns of the power battery pack in the same batch and the uncertainty of the manual clamping position. This application provides a utmost point post hookup location accuracy, detects the high automatic connecting device that charges and discharges of too big electric current of precision in order to solve above-mentioned background art not enough.

The automatic charging and discharging connection device shown in fig. 1-5 comprises a device platen 1, a linear motion driving device fixed on the device platen 1, and a power battery carrying bracket 2 driven by the linear motion driving device and linearly reciprocating along a Y-axis direction (i.e. a second direction, which is also a front-back direction, and the second direction is a defined direction, and in this embodiment, the front-back direction is taken as an example, and the same is applied below) for carrying a power battery 4, a detection bracket 3 is further fixed on the device platen 1, a chuck mechanism moving along an X-axis direction (i.e. a first direction, which is also a top-bottom direction, and the first direction is an artificially defined direction, and in this embodiment, the top-bottom direction is taken as an example, and the same is applied below) and connected with a pole 5 of the power battery 4 and transmitting current, the chuck mechanism comprises two pole chucks 6 capable of being respectively connected with positive and negative poles of the power battery 4, the pole clamping head 6 is arranged above the power battery 4 along the Y-axis direction and at the position corresponding to the positive and negative poles; utmost point post chuck 6 includes two semi-circular arc's utmost point post splint 6.2, and two utmost point post splint 6.2 can enclose into the ring with 5 circumference surface laminating of utmost point post, detect to be equipped with on the support 3 and can make two utmost point post splint 6.2 with 5 circumference surface of utmost point post closely laminate, increase the clamping mechanism of utmost point post splint 6.2 and the contact surface of utmost point post 5, clamping mechanism include two can follow Z axle direction (third direction promptly, also control the direction, the third direction is a direction of artificial definition, explains with controlling the direction as the example in this embodiment, lower with) remove, extrude utmost point post splint 6.2, make the clamping plate 20 that the interior side surface of utmost point post splint 6.2 closely laminated with the surface of utmost point post 5 and be used for driving clamping actuating mechanism that the clamping plate 20 removed.

As shown in fig. 1, the linear motion driving device is an electric sliding table 7, which includes a cylinder body 7.1 and a driving motor 7.2 coaxially fixed at one end of the cylinder body 7.1, the cylinder body 7.1 is provided with a slide 7.3 along the axial direction thereof, the slide 7.3 is provided with a sliding table 7.4, a rotating shaft of the driving motor 7.2 is connected with the sliding table 7.4 through a screw rod nut mechanism, the sliding table 7.4 is fixed with a positioning tray 21, and the power battery bearing bracket 2 is fixed on the positioning tray 21. The power battery bearing support 2 comprises a battery support plate 2.1 fixed on the positioning tray 21 and a battery positioning frame 2.2 fixed on the battery support plate 2.1 and circumferentially surrounding the bottom of the power battery 4, and the power battery 4 is placed on the battery support plate 2.1 and positioned through the battery positioning frame 2.2.

The chuck mechanism comprises a lifting driving mechanism fixed on the left side and the right side of the detection support 3, a lifting plate 8 positioned above the detection support 3 and connected with the power output end of the lifting driving mechanism, and a chuck support 9 vertically fixed on the lifting plate 8, wherein the lifting driving mechanism comprises a lifting driving cylinder 11 fixed on the outer surface of the detection support 3 and a lifting guide mechanism for stabilizing the vertical movement of the lifting plate 8; the piston rod of the lifting driving cylinder 11 is fixed on the lifting plate 8 through a cushion block 12, the lifting guide mechanism comprises linear bearings 13 and guide shafts 14, the linear bearings 13 are located on the front side and the rear side of the lifting driving cylinder, are arranged in parallel with the lifting driving cylinder 11 and are fixed on the outer surface of the detection support 3, the guide shafts 14 are coaxially arranged in the linear bearings 13, and the top ends of the guide shafts 14 are fixed on the lifting plate 8. The side surface of the lifting driving cylinder 11 is also fixedly provided with a limiting structure for limiting the rising height of the lifting plate 8, the limiting structure comprises a limiting block 15 fixed on the side surface of the lifting driving cylinder 11 and a limiting bolt 16 vertically penetrating through the limiting block 15, the bolt head of the limiting bolt 16 is positioned below the limiting block 15, and the top thread section of the limiting bolt 16 is fixedly connected with the lifting plate 8.

As shown in fig. 2, the cartridge holder 9 includes a cartridge holder fixing plate 9.1 fixed on the upper surface of the lifting plate 8 in parallel, a connecting bolt 9.2 perpendicular to the cartridge holder fixing plate 9.1 is fixed on the cartridge holder fixing plate 9.1, a current detection plate 10 is fixed on the top end of the connecting bolt 9.2, a post cartridge 6 is fixed on the bottom end of the connecting bolt, the current detection plate 10 is located above the lifting plate 8, and the post cartridge 6 is located below the lifting plate 8.

A temperature sensor 17 parallel to the connecting bolt 9.2 is further fixed in the chuck support 9, and the bottom surface of the sensing end of the temperature sensor 17 is flush with the upper surface of the pole chuck 6. The utmost point post chuck 6 includes utmost point post chuck fixing base 6.1 and the left and right sides, the semi-circular arc's of being fixed in utmost point post chuck fixing base 6.1 utmost point post splint 6.2, and the tip of two utmost point post splint 6.2 fixedly connected with respectively presss from both sides tight locating plate 6.3 of extension to utmost point post splint 6.2 outside.

The clamping mechanism comprises parallel cylinders 18 (clamping driving mechanisms) which are positioned in front of the pole chuck 6 and fixed on the left side and the right side of the detection support 3, each parallel cylinder 18 comprises two sliding blocks 19 capable of moving left and right, and each sliding block 19 is fixed with a clamping plate 20 of which the inner side surface can be attached to the outer side surface of the clamping positioning plate 6.3.

In the utility model, firstly, the power battery 4 is placed on the battery supporting plate 2.1, the battery positioning frame 2.2 is used for positioning, the electric sliding table 7 drives the power battery bearing bracket 2 to move towards the direction of the detection bracket 3, when the pole 5 of the power battery 4 moves to the position under the pole chuck 6, the lifting driving cylinder 11 drives the lifting plate 8 to descend, the pole column chuck 6 is sleeved on the pole column 5, the parallel cylinder 18 drives the sliding block 19 to move towards the middle part of the parallel cylinder 18, the sliding block 19 drives the clamping plate 20 to move towards the middle part of the parallel cylinder 18, the clamping positioning plate 6.3 is clamped and clamped, current is transmitted to the pole column chuck 6 through the pole column 5 and is finally output outwards through the current detection plate 10, and whether the output current of the power battery 4 is qualified or not can be judged by detecting the current, meanwhile, the temperature of the pole 5 is detected through the temperature sensor 17, and whether the safety requirement is met when the power battery 4 outputs current is judged. After the power battery 4 is detected, the parallel air cylinder 18 drives the clamping plate 20 to release the action on the pole chuck 6, the pole chuck 6 is driven to ascend through the lifting driving air cylinder 11 and is separated from the pole 5, the electric sliding table 7 drives the power battery bearing support 2 to return to the original position, the detected power battery 4 is detached, and the power battery 4 which is not detected is placed, so that the detection can be carried out again.

Optionally, as shown in fig. 3-5, the utility model discloses a charge-discharge automatic connection device can bear 300A-500A's electric current, and the external diameter of the ring that two utmost point post splint 6.2 enclose is 23-30 mm, and the thickness (the width of left side view in fig. 4) of utmost point post chuck 6 is 11-15 mm, and parallel cylinder 18's clamp force is 100-400N. In the embodiment of the present application, the pole 5 has a frustum shape, and a cross section perpendicular to the X axis is an ellipse. In other implementation manners, the shape and the cross section of the pole can be in other forms, the application is not limited, and the pole clamp 6 is suitable for square-shell batteries and other types of batteries, and is particularly determined according to actual conditions.

After the electric current that charges and discharges automatic connection device bore is confirmed, just design utmost point post chuck 6's size, bear the electric current more, required utmost point post splint 6.2 also is big with the contact surface of utmost point post 5, consequently utmost point post chuck 6's design size needs to correspond the increase (the external diameter of the ring that two utmost point post splint 6.2 that correspond enclosed and utmost point post chuck 6's thickness increase promptly), because utmost point post chuck 6 size increases, leads to the required clamp force of utmost point post chuck 6 to also increase, consequently parallel cylinder 18's clamp force also corresponds the increase. Therefore, after the bearing current is confirmed, the size range of the pole terminal chuck 6 and the clamping force range of the parallel cylinder 18 are also determined immediately, if the clamping force 18 of the parallel cylinder is smaller than the design range, the pole terminal chuck 6 is difficult to clamp the pole terminal 5, a large-size contact surface cannot be generated, and the bearing current capacity is insufficient, and if the clamping force of the parallel cylinder 18 is larger than the design value, the clamping force between the pole terminal chuck 6 and the pole terminal 5 is too large, and the structures of the pole terminal chuck 6 and the pole terminal 5 are damaged. Similarly, if the size of the post chuck 6 is smaller than the design value, the clamping force of the parallel cylinder 18 is relatively too large, which may damage the structures of the post chuck 6 and the post 5, and if the size of the post chuck 6 is larger than the design value, the clamping force provided by the parallel cylinder 18 may not cause the post chuck 6 to clamp the post 5, which may not generate a large contact surface, resulting in insufficient current carrying capacity. In practical application, the clamping force of the pole clamp 6 and the parallel cylinder 18 with different sizes can be designed according to practical situations so as to pass different currents.

The utility model discloses an among the implementation, the applicant is through deep research, the external diameter of the ring that encloses through two utmost point post splint 6.2 of design charge-discharge automatic connecting device is 23-30 mm, the thickness (the width of left side view in figure 4) of utmost point post chuck 6 is 11-15 mm, parallel cylinder 18's clamp force is 100-400N, make charge-discharge automatic connecting device can bear 300A-500A's electric current, can satisfy the automatic demand of charging and discharging of large capacity battery, and equipment stable performance, more save cost and raw and other materials.

The utility model provides a pair of charge-discharge automatic connecting device, make the battery bear the weight of the support through linear motion drive arrangement and bear power battery and be linear reciprocating motion, power battery's utmost point post is connected through the utmost point post chuck along the chuck mechanism of first direction removal, and press from both sides tight utmost point post chuck through clamping mechanism, the problem that manual clamping utmost point post caused the error has been solved, utmost point post chuck increases the contact surface with utmost point post through clamping mechanism, the ability of the too big electric current of utmost point post chuck has been realized, utmost point post chuck and utmost point post automatic connection, the repeatability of charge-discharge test of batch power battery group has been improved. Through changing the size of utmost point post chuck or clamping force of clamping mechanism, can further improve connecting device's overcurrent ability, satisfy the market demand that changes fast.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention all still fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a charge-discharge automatic connecting device which characterized in that: including linear motion drive arrangement and detection support (3), be provided with on detection support (3) and follow first direction removal, be connected and transmit electric current's chuck mechanism with utmost point post (5) of power battery (4), be provided with on the linear motion drive arrangement and bear power battery (4) move extremely along the second direction power battery of chuck mechanism below bears support (2).

2. The charge-discharge automatic connection device according to claim 1, wherein: the chuck mechanism comprises a lifting driving mechanism fixed on two sides of the detection support (3) in the third direction, a lifting plate (8) connected with a power output end of the lifting driving mechanism, and a chuck support (9) vertically fixed on the lifting plate (8), wherein a current detection plate (10) is fixed at the top of the chuck support (9), and the pole chuck (6) is fixed at the bottom of the chuck support.

3. The charge-discharge automatic connection device according to claim 2, wherein: the lifting driving mechanism comprises a lifting driving cylinder (11) fixed on the outer surface of the detection bracket (3) and a lifting guide mechanism capable of enabling the lifting plate (8) to move stably along a first direction; the piston rod of the lifting driving cylinder (11) is fixed on the lifting plate (8) through a cushion block (12), the lifting guide mechanism comprises a linear bearing (13) and a guide shaft (14), the linear bearing (13) is arranged in parallel with the lifting driving cylinder (11) and fixed on the outer surface of the detection support (3), the guide shaft (14) is coaxially arranged in the linear bearing (13), and the top end of the guide shaft (14) is fixed on the lifting plate (8).

4. The charge-discharge automatic connection device according to claim 3, wherein: the side surface of the lifting driving cylinder (11) is further fixedly provided with a limiting structure for limiting the lifting height of the lifting plate (8), the limiting structure comprises a limiting block (15) fixed on the side surface of the lifting driving cylinder (11) and a limiting bolt (16) vertically penetrating through the limiting block (15), the bolt head of the limiting bolt (16) is located below the limiting block (15), and the top thread section of the limiting bolt (16) is fixedly connected with the lifting plate (8).

5. The charge-discharge automatic connection device according to claim 2, wherein: the clamp support (9) comprises a clamp support fixing plate (9.1) which is fixed on the upper surface of the lifting plate (8) in parallel, a connecting bolt (9.2) which is perpendicular to the clamp support fixing plate is fixed on the clamp support fixing plate (9.1), the top end of the connecting bolt (9.2) is fixed with the current detection plate (10), and the bottom end of the connecting bolt is fixed with a pole clamp (6) which can be connected with a pole of the power battery (4).

6. The charge-discharge automatic connection device according to claim 5, wherein: still be fixed with in chuck support (9) with connecting bolt (9.2) parallel temperature sensor (17), the bottom surface of the response end of temperature sensor (17) is not less than the upper surface of utmost point post chuck (6).

7. The charge-discharge automatic connection device according to claim 5, wherein: utmost point post chuck (6) include utmost point post chuck fixing base (6.1) and are fixed in utmost point post splint (6.2) of the both sides of the third direction of utmost point post chuck fixing base (6.1).

8. The charge-discharge automatic connection device according to claim 7, wherein: the detection device is characterized in that a clamping driving mechanism is fixed on the detection support (3), the clamping driving mechanism is a parallel cylinder (18), the parallel cylinder (18) comprises two sliding blocks (19) capable of reciprocating along a third direction, and each sliding block (19) is fixedly provided with a clamping plate (20) capable of compressing the pole clamping plate (6.2).

9. The charge-discharge automatic connection device according to claim 8, wherein: the clamp mechanism can bear 300-500A current, two pole clamping plates (6.2) can be enclosed into a circular ring attached to the circumferential surface of the pole (5), the outer diameter of the circular ring is 23-30 mm, the thickness of the pole clamp (6) is 11-15 mm, and the clamping force of the parallel cylinder (18) is 100-400N.

10. The charge-discharge automatic connection device according to claim 1, wherein: the linear motion driving device is an electric sliding table (7), the electric sliding table (7) comprises a positioning tray (21) fixed at the driving end of the electric sliding table, and the power battery bearing support (2) is fixed on the positioning tray (21).