CN213633499U

CN213633499U - Charge-discharge test fixture

Info

Publication number: CN213633499U
Application number: CN202021914729.7U
Authority: CN
Inventors: 陆灏铭; 吴小生
Original assignee: Shenzhen Intelligent Automation Equipment Co ltd
Current assignee: Shenzhen Intelligent Automation Equipment Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-07-06
Anticipated expiration: 2030-09-04

Abstract

The utility model aims at providing a charge-discharge test fixture that compatibility is strong, efficiency of software testing is high. The utility model discloses a seat is placed to the product, diaxon adjustment subassembly and become interval accredited testing organization, it fixes the expansion end at diaxon adjustment subassembly to become interval accredited testing organization, it includes the mount to become interval accredited testing organization, first slide rail set, a plurality of test assembly and the subassembly of stretching out, first slide rail set is fixed on the mount, the equal sliding fit of a plurality of test assembly is on first slide rail set, two adjacent test assembly are connected through the extension spring, it includes a plurality of wedges to stretch out the subassembly, sliding plate and first linear drive subassembly, be provided with the second slide rail on the sliding plate, the equal sliding fit of a plurality of wedges is on the second slide rail, all be equipped with the wedge between per two adjacent test assembly, first linear drive subassembly drives the sliding plate and is close to or keeps away from a plurality. The utility model discloses be applied to accredited testing organization's technical field.

Description

Charge-discharge test fixture

Technical Field

The utility model discloses be applied to accredited testing organization's technical field, in particular to charge-discharge test fixture.

Background

With the increasing importance of new energy products, lithium batteries are used more and more widely in these years, and in order to meet more and more various products, the specifications of the lithium batteries are also more and more varied. In the process of manufacturing the lithium battery, the battery pack needs to be subjected to charge and discharge tests before being assembled into the battery module, and the diversity of the product puts forward higher compatibility requirements on equipment. At present, when the battery pack is charged and discharged, the special clamping jig module is needed for batteries with different shapes and sizes, when a production line switches a produced product, the clamping jig of the test module needs to be replaced, the line changing time is long, and the input cost of the clamping jig is high. The special development of single product does not possess the compatibility, and the test clip tool need be changed when the product is changed to the production line, and not only wastes time and energy, and the change process is because pressing from both sides the tool and too heavily having the safety risk moreover. In addition, the number of adjusting units of the conventional equal-interval adjusting mechanism is small, the load is small, the simultaneous testing of a large batch of battery packs cannot be met, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a charge-discharge test fixture that compatibility is strong, efficiency of software testing is high.

The utility model adopts the technical proposal that: the utility model comprises a product placing seat, a two-axis adjusting component and a variable-spacing testing mechanism, wherein the variable-spacing testing mechanism is fixed at the movable end of the two-axis adjusting component, the variable-spacing testing mechanism comprises a fixed frame, a first slide rail group, a plurality of testing components and an extension component, the first slide rail group is fixed on the fixed frame, a plurality of testing components are all in sliding fit on the first slide rail group, two adjacent testing components are connected through a tension spring, the extension component comprises a plurality of wedges, a sliding plate and a first linear driving component, the sliding plate is provided with a second slide rail, a plurality of wedges are all in sliding fit on the second slide rail, the wedge is arranged between every two adjacent testing components, the first linear driving component drives the sliding plate to be close to or far away from the plurality of testing components, and then the wedge block drives the two adjacent test assemblies to be separated or close to each other, wherein the test assembly at one end part is fixedly connected with the fixed frame.

According to the scheme, the product placing seat is used for limiting and supporting the product to be detected. The variable-spacing testing mechanism is driven to move by the two-axis adjusting mechanism, so that the variable-spacing testing mechanism is driven to be close to a product machine to be tested to be in butt joint and to be lifted to match products with different heights. The sliding plate is driven to be close to or far away from the plurality of testing assemblies through the first linear driving assembly, so that the wedge-shaped block is in contact with the edges of the testing assemblies and applies thrust, and adjacent two testing assemblies are separated. Through the extension spring makes adjacent two the test assembly is close to each other, because all the length of stretching out of wedge is the same makes all the interval of strutting is the same between the test assembly, simultaneously all the test assembly with all the wedge all sets up on the slide rail, works as when the interval of test assembly changes the wedge is followed in horizontal and is changed the interval, and then the different product test of arranging the interval of adaptation reaches the effect of compatible multiple product. The number of the test assemblies can be set according to requirements, and the sliding plate transmits power to ensure that the wedge-shaped blocks can synchronously act, so that the action precision is improved. The first linear driving assembly comprises a driving motor, a linear sliding rail and the like. The wedge block is of a symmetrical structure, so that the abrasion of the two test assemblies is kept consistent, and later-period unified maintenance is facilitated.

One preferred scheme is, the test assembly includes mounting bracket, contact and rolling assembly, the mounting bracket with first slide rail group sliding fit, the contact sets up on the mounting bracket, contact and outside test circuit electric connection, the rolling assembly includes little support and two bearings, little support is fixed the mounting bracket is close to stretch out the one end of subassembly, two the bearing rotates respectively to be set up the both ends of little support, two the bearing respectively with correspond the wedge cooperation.

As can be seen from the above, the mounting bracket is used to provide support. The mounting bracket passes through the slider with first slide rail group sliding fit, the contact is used for contacting with the pin or the positive negative pole of the product that awaits measuring, and then realizes switching on with outside test circuit or test instrument and test. And the abrasion of the wedge block during working is reduced by arranging the rolling assembly.

According to a preferable scheme, the variable-pitch testing mechanism further comprises a second linear driving assembly, the second linear driving assembly is fixed on the fixed frame, the contact is in sliding fit with the fixed frame through a connecting rod, and the connecting rods of all the testing assemblies are connected with the movable end of the second linear driving assembly.

According to the scheme, the second linear driving assembly drives the contact to extend out to be in butt joint with the pin of the product to be tested. The second linear driving assembly consists of a driving cylinder and a connecting block.

According to a preferable scheme, the two-axis adjusting assembly comprises a third linear driving assembly, a moving support and a first lifting mechanism, the moving support is fixed at the movable end of the third linear driving assembly, a plurality of guide pillars in sliding fit with the variable-pitch testing mechanism are arranged on the moving support, the first lifting mechanism comprises a lead screw and a driving motor which are rotatably arranged on the moving support, the driving motor is in transmission connection with the lead screw, and a nut pair matched with the lead screw is arranged on the fixing frame.

According to the scheme, the third linear driving assembly drives the movable support to be close to or far away from the product placing seat. The third linear driving mechanism consists of a motor and a screw rod component. The accuracy of the variable-spacing testing mechanism during height adjustment is improved through the guide pillars.

Preferably, the two-axis adjusting assembly is provided with two groups of variable-pitch testing mechanisms, the two-axis adjusting assembly further comprises a second lifting mechanism, the first lifting mechanism and the second lifting mechanism are respectively arranged at two ends of the movable support, and the two groups of variable-pitch testing mechanisms are respectively in transmission connection with the first lifting mechanism and the second lifting mechanism.

According to the scheme, the first lifting mechanism and the second lifting mechanism are arranged simultaneously to respectively adjust the heights of the two variable-pitch testing mechanisms, and the two variable-pitch testing mechanisms are arranged simultaneously to realize product testing suitable for more specifications. The first lifting mechanism and the second lifting mechanism have the same structure.

One preferred scheme is that the two sides of the product placing seat are respectively provided with the two-axis adjusting assembly and the variable-spacing testing mechanism.

According to the scheme, the product test which is suitable for more specifications is realized on two sides of the product placing seat at the same time.

Drawings

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

FIG. 2 is a schematic perspective view of the two-axis adjustment assembly;

FIG. 3 is a schematic perspective view of a first view angle of the variable pitch test mechanism;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic perspective view of a second view angle of the variable pitch test mechanism;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a schematic view of a disassembled structure of the variable pitch test mechanism;

FIG. 8 is an enlarged view of portion C of FIG. 7;

fig. 9 is a schematic perspective view of the test assembly.

Detailed Description

As shown in fig. 1 to 9, in this embodiment, the present invention includes a product placing seat 1, a two-axis adjusting assembly 2, and a variable-pitch testing mechanism 3, where the variable-pitch testing mechanism 3 is fixed at a movable end of the two-axis adjusting assembly 2, the variable-pitch testing mechanism 3 includes a fixed frame 301, a first slide rail set 302, a plurality of testing assemblies, and an extending assembly, the first slide rail set 302 is fixed on the fixed frame 301, a plurality of testing assemblies are all slidably fitted on the first slide rail set 302, two adjacent testing assemblies are connected through a tension spring 303, the extending assembly includes a plurality of wedge blocks 304, a sliding plate 305, and a first linear driving assembly 306, the wedge block 304 is disposed between every two adjacent testing assemblies, a second slide rail 307 is disposed on the sliding plate 305, and a plurality of wedge blocks 304 are all slidably fitted on the second slide rail 307, the first linear driving component 306 drives the sliding plate 305 to approach or depart from a plurality of testing components, so that the wedge block 304 drives two adjacent testing components to separate or approach, and the testing component at one end of the wedge block is fixedly connected with the fixing frame 301.

In this embodiment, the testing component includes a mounting bracket 308, a contact 309 and a rolling component 310, the mounting bracket 308 is in sliding fit with the first sliding rail set 302, the contact 309 is disposed on the mounting bracket 308, the contact 309 is electrically connected with an external testing circuit, the rolling component 310 includes a small bracket and two bearings, the small bracket is fixed at one end of the mounting bracket 308 close to the protruding component, the two bearings are respectively rotatably disposed at two ends of the small bracket, and the two bearings are respectively matched with the corresponding wedge blocks 304.

In this embodiment, the variable-pitch testing mechanism 3 further includes a second linear driving assembly 311, the second linear driving assembly 311 is fixed on the fixing frame 301, the contact 309 is slidably fitted on the mounting frame 308 through a connecting rod, and the connecting rods of all the testing assemblies are in limit fit and sliding fit with the movable end of the second linear driving assembly 311.

In this embodiment, the two-axis adjusting assembly 2 includes a third linear driving assembly 201, a moving bracket 202 and a first lifting mechanism, the moving bracket 202 is fixed at a movable end of the third linear driving assembly 201, the moving bracket 202 is provided with a plurality of guide posts 203 slidably engaged with the variable pitch testing mechanism 3, the first lifting mechanism includes a screw 204 and a driving motor 205 rotatably disposed on the moving bracket 202, the driving motor 205 is in transmission connection with the screw 204, and the fixing frame 301 is provided with a nut pair 206 adapted to the screw 204.

In this embodiment, two sets of variable pitch test mechanisms 3 are arranged on the two-axis adjusting assembly 2, the two-axis adjusting assembly 2 further includes a second lifting mechanism, the first lifting mechanism and the second lifting mechanism are respectively arranged at two ends of the movable support 202, and the two sets of variable pitch test mechanisms 3 are respectively in transmission connection with the first lifting mechanism and the second lifting mechanism.

In this embodiment, two sides of the product placing seat 1 are provided with the two-axis adjusting assembly 2 and the variable-pitch testing mechanism 3.

The utility model discloses a theory of operation:

first, a product to be tested is placed on the product placing base 1 by an operator for fixation. The two-axis adjusting component 2 drives the variable-pitch testing mechanism 3 to adjust the position relative to a product to be tested, and meanwhile, the advancing distance of the sliding plate 305 is controlled by controlling the number of rotation turns of the driving motor in the first linear driving component 306 according to the product specification, so that the wedge blocks 304 extend out of a specified distance, and the distance between two adjacent testing components is shortened. Two adjacent test assemblies are always tightly attached to the wedge block 304 under the action of the tension spring 303. After the adjustment is completed, the testing component is aligned with the pins of the product, and the second linear driving component 311 drives the plurality of contacts 309 to be in butt joint with the product, so as to perform the test.

Claims

1. The utility model provides a charge-discharge test fixture which characterized in that: the device comprises a product placing seat (1), two shaft adjusting assemblies (2) and a variable spacing testing mechanism (3), wherein the variable spacing testing mechanism (3) is fixed at the movable end of the two shaft adjusting assemblies (2), the variable spacing testing mechanism (3) comprises a fixed frame (301), a first slide rail set (302), a plurality of testing assemblies and an extending assembly, the first slide rail set (302) is fixed on the fixed frame (301), the testing assemblies are in sliding fit on the first slide rail set (302), two adjacent testing assemblies are connected through a tension spring (303), the extending assembly comprises a plurality of wedge blocks (304), a sliding plate (305) and a first linear driving assembly (306), the wedge block (304) is arranged between every two adjacent testing assemblies, a second slide rail (307) is arranged on the sliding plate (305), the wedge-shaped blocks (304) are all in sliding fit with the second sliding rails (307), the first linear driving assembly (306) drives the sliding plate (305) to be close to or far away from the test assemblies, the wedge-shaped blocks (304) drive the adjacent two test assemblies to be separated or close to each other, and the test assemblies at one end of each wedge-shaped block are fixedly connected with the fixed frame (301).

2. The charging and discharging test fixture of claim 1, wherein: the test assembly comprises a mounting rack (308), a contact (309) and a rolling assembly (310), the mounting rack (308) is in sliding fit with the first sliding rail set (302), the contact (309) is arranged on the mounting rack (308), the contact (309) is electrically connected with an external test circuit, the rolling assembly (310) comprises a small support and two bearings, the small support is fixed to the mounting rack (308) and is close to one end of the extending assembly, the two bearings are arranged at two ends of the small support in a rotating mode respectively, and the two bearings are matched with the wedge blocks (304) correspondingly respectively.

3. The charging and discharging test fixture of claim 2, wherein: the variable-pitch testing mechanism (3) further comprises a second linear driving assembly (311), the second linear driving assembly (311) is fixed on the fixed frame (301), the contact (309) is in sliding fit with the fixed frame (308) through a connecting rod (312), and the connecting rods (312) of all the testing assemblies are connected with the movable end of the second linear driving assembly (311).

4. The charging and discharging test fixture of claim 1, wherein: the two-axis adjusting assembly (2) comprises a third linear driving assembly (201), a moving support (202) and a first lifting mechanism, the moving support (202) is fixed at the movable end of the third linear driving assembly (201), a plurality of guide columns (203) in sliding fit with the variable-pitch testing mechanism (3) are arranged on the moving support (202), the first lifting mechanism comprises a lead screw (204) and a driving motor (205) which are rotatably arranged on the moving support (202), the driving motor (205) is in transmission connection with the lead screw (204), and a nut pair (206) matched with the lead screw (204) is arranged on the fixing frame (301).

5. The charging and discharging test fixture of claim 4, wherein: the two-axis adjusting assembly (2) is provided with two groups of variable-pitch testing mechanisms (3), the two-axis adjusting assembly (2) further comprises a second lifting mechanism, the first lifting mechanism and the second lifting mechanism are respectively arranged at two ends of the movable support (202), and the two groups of variable-pitch testing mechanisms (3) are respectively in transmission connection with the first lifting mechanism and the second lifting mechanism.

6. The charging and discharging test fixture of claim 1, wherein: the two sides of the product placing seat (1) are provided with the two-axis adjusting assembly (2) and the variable-spacing testing mechanism (3).