CN222087730U - Test fixtures and test equipment - Google Patents

Abstract

The application relates to the technical field of battery detection equipment, in particular to a test fixture and a test device, wherein the test fixture comprises a linear driving part, a first clamping body and a second clamping body, at least part of the first clamping body and the second clamping body are opposite to each other, and the linear driving part is connected with the first clamping body and the second clamping body so as to drive the first clamping body and the second clamping body to be close to and far away from each other. The wire groove is arranged on at least one of the first clamping body and the second clamping body, the notch of the wire groove is open towards the clamping space, and the clamping space is a space between the parts of the first clamping body and the second clamping body, which are opposite to each other. According to the test fixture and the test device provided by the application, the operation of locking the battery to be tested by the fixture is simplified, the efficiency of battery detection is improved, the deformation of the temperature acquisition line and the battery to be tested caused by extrusion is effectively prevented, and the temperature acquisition accuracy of the temperature acquisition line is ensured.

Description

Test fixture and test device

Technical Field

The application relates to the technical field of battery detection equipment, in particular to a test fixture and a test device.

Background

In recent years, power battery technology has rapidly developed, various types of batteries appear, the accuracy of battery detection becomes a key link for guaranteeing the use safety of the batteries, and when battery tests are carried out on a laboratory charge-discharge tester, a clamp is usually required to apply pretightening force to the batteries so as to guarantee the stability of the appearance of the batteries, prevent the batteries from expanding and deforming in the detection process, and further improve the reliability of test data of battery detection.

In the battery test process, the clamping force of the clamp on the battery is required to be certain, for example, in order to meet the requirement of a control variable method, the clamping force of the clamp on the battery in multiple tests is required to be consistent all the time.

However, the current battery clamping fixture usually uses a torque wrench to tighten the bolts on the fixture one by one in a torque manner, so that the control of the fixture on the pretightening force is realized, the test clamping process is longer, the operation is complex, and the test efficiency is greatly influenced.

In addition, in the battery detection process, a temperature acquisition wire is usually attached to the surface of the battery to monitor the surface temperature of the battery, however, the battery is very easy to damage under the action of the clamping force of the clamp in a state of clamping the clamp by applying a certain pretightening force, and/or the surface of the battery is very easy to be extruded and deformed by the temperature acquisition wire, so that the battery is damaged.

Disclosure of utility model

The application aims to provide a test fixture and a test device, which are used for solving the technical problems that the prior battery clamping fixture usually uses a torque wrench to tightly screw bolts on the fixture one by one, the operation is complex, the test efficiency is greatly influenced, and the temperature acquisition line and the battery surface are easy to be extruded and deformed under the action of the clamping force of the fixture, so that the temperature acquisition line and/or the battery surface are damaged.

According to a first aspect of the present application, there is provided a test fixture comprising a linear driving portion, a first clamping body and a second clamping body, at least parts of the first clamping body and the second clamping body being disposed opposite to each other, the linear driving portion connecting the first clamping body and the second clamping body to drive the first clamping body and the second clamping body to approach and separate from each other for clamping and releasing a battery to be tested;

The wire groove is arranged on at least one of the first clamping body and the second clamping body, the notch of the wire groove is opened towards the clamping space, and the clamping space is a space between the parts of the first clamping body and the second clamping body, which are opposite to each other.

Preferably, the device further comprises a display part, wherein the display part is in transmission connection with the linear driving part so as to display the pretightening force applied to the battery to be tested by the first clamping body and the second clamping body.

Preferably, the display part is disposed at a side of the first clamping body facing away from the second clamping body.

Preferably, the battery to be tested is arranged in the clamping space, and the tab of the battery to be tested can be attached to at least part of the electric connection fixing part.

Preferably, the same side of both the first clamping body and the second clamping body is provided with the electric connection fixing part.

Preferably, the electrical connection fixing portion includes at least two electrical connection pieces arranged at intervals, so as to be used for fixing the tabs with different polarities of the battery to be tested respectively.

Preferably, the test fixture further comprises an insulating coating part, and the surface of the part of the test fixture except the electric connection fixing part is provided with the insulating coating part.

Preferably, the first clamping body and the second clamping body are both provided with the wiring groove.

Preferably, the wiring grooves are grid-shaped;

At least a portion of the wire slot can extend to a sidewall of the first clamping body and/or the second clamping body to facilitate threading from the sidewall into the wire slot.

According to a second aspect of the present application, there is provided a testing device, including the testing fixture according to any one of the above-mentioned aspects, so that the testing fixture has all the beneficial technical effects, and will not be described herein.

Compared with the prior art, the application has the beneficial effects that:

According to the test fixture provided by the application, the first clamping body and the second clamping body are connected through the linear driving part so as to apply the pretightening force to the battery to be tested, and the pretightening force to the battery to be tested is effectively applied by replacing the conventional fixture in a mode of tightening the fixture by a bolt by torque. The operation of anchor clamps locking battery that awaits measuring has been simplified effectively, the efficiency that has improved the battery and has detected, and through set up the wiring groove on first centre gripping body and/or second centre gripping body, and make the notch of wiring groove open towards the centre gripping space, so when the battery that awaits measuring sets up in this centre gripping space, the wiring groove not only can provide accommodation space for the temperature acquisition line, prevent effectively that both the temperature acquisition line and the battery that awaits measuring from receiving the extrusion and taking place to warp, the notch of wiring groove is open towards the centre gripping space moreover, make the temperature acquisition line can keep contacting with the battery that awaits measuring, the temperature accuracy of the temperature acquisition line has been guaranteed.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an axial structure of a test fixture according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another axial structure of a test fixture according to an embodiment of the present application;

Fig. 3 is a schematic diagram of another axial structure of the test fixture according to the embodiment of the application.

Reference numerals:

11-first clamping body, 12-second clamping body, 2-linear driving part, 3-wiring groove, 4-display part, 5-electric connection fixing part, 51-electric connection sheet, 6-control button and 7-battery to be tested.

F1-first direction, F2-second direction, F3-third direction.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown.

The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Fig. 1 shows a schematic axial structure of an assembly structure of a test fixture and a battery 7 to be tested according to an embodiment of the present application, and it should be noted that the clamping position of the battery 7 to be tested is only schematically shown by a cube, the battery 7 to be tested is not limited to the cube, fig. 2 shows a schematic axial structure of the test fixture according to an embodiment of the present application, and fig. 3 shows a schematic axial structure of the test fixture according to another view angle of the test fixture according to an embodiment of the present application.

A test fixture and a test apparatus according to some embodiments of the present application are described below with reference to fig. 1 to 3.

Referring to fig. 1 to 3, an embodiment of the first aspect of the present application provides a test fixture including a linear driving portion 2, a first clamping body 11 and a second clamping body 12, at least portions of both the first clamping body 11 and the second clamping body 12 being disposed opposite to each other, the linear driving portion 2 connecting the first clamping body 11 and the second clamping body 12 to drive both the first clamping body 11 and the second clamping body 12 toward and away from each other for clamping and releasing a battery 7 to be tested. The wiring groove 3 is provided on at least one of the first clamping body 11 and the second clamping body 12, and the notch of the wiring groove 3 is opened toward the clamping space, which is the space between the parts where the first clamping body 11 and the second clamping body 12 are arranged opposite to each other.

According to the test fixture provided by the technical characteristics, the first clamping body 11 and the second clamping body 12 are connected through the linear driving part 2 so as to apply the pretightening force to the battery 7 to be tested, and the pretightening force to the battery 7 to be tested is effectively applied in place of the mode that the existing fixture is screwed by bolting moment. The operation of the clamp locking battery 7 to be tested is effectively simplified, the efficiency of battery detection is improved, and through setting up the wiring groove 3 on first clamping body 11 and/or second clamping body 12, and make the notch of wiring groove 3 open towards the centre gripping space, so when battery 7 to be tested sets up in this centre gripping space, wiring groove 3 not only can provide accommodation space for the temperature acquisition line, the deformation takes place for the temperature acquisition line and the battery 7 to be tested is prevented effectively to receive the extrusion, and the notch of wiring groove 3 is open towards the centre gripping space, make the temperature acquisition line can keep contact with battery 7 to be tested, the accuracy of adopting the temperature of temperature acquisition line has been guaranteed.

For convenience of description, the telescopic direction of the above-described linear driving section 2 (i.e., the direction in which both the first clamping body 11 and the second clamping body 12 face each other) is defined as a first direction F1, and two directions perpendicular to each other on a plane perpendicular to the first direction F1 are defined as a second direction F2 and a third direction F3, respectively, as shown in fig. 1 to 3, F1 shown in the drawing may be an example of the first direction F1, F2 shown in the drawing may be an example of the second direction F2, and F3 shown in the drawing may be an example of the third direction F3.

Preferably, as shown in fig. 1 to 3, the first clamping body 11 and the second clamping body 12 are opposite to each other along the first direction F1, so as to increase the contact area between the test fixture and the battery 7 to be tested, and further reduce the probability of extrusion damage of the temperature collection line and the battery 7 to be tested.

Preferably, as shown in fig. 1 to 3, the above-mentioned linear driving part 2 may include a plurality of linear driving parts 2 may be disposed at intervals along the edges of the first clamping body 11 and/or the second clamping body 12 in order to improve the uniformity of the clamping force distribution between the first clamping body 11 and the second clamping body 12.

As shown in fig. 1 to 3, the example in which the first clamping body 11 and the second clamping body 12 have a rectangular plate-like structure is shown, but not limited thereto, and the first clamping body 11 and the second clamping body 12 may also have other shapes, such as a column shape, a block shape, and the cross-sectional shape of both the first clamping body 11 and the second clamping body 12 is not limited to the rectangle, and the cross-sectional shape of both the first clamping body 11 and the second clamping body 12 may also be a circle, an ellipse, a polygon, or other irregular shape, as long as the clamping stability of the battery 7 to be tested can be ensured.

The linear driving unit 2 may be an electric telescopic rod, but the linear driving unit 2 may be another linear driving device, such as a linear motor, an air cylinder, a hydraulic cylinder, or the like.

Preferably, as shown in fig. 1 to 3, the test fixture may further include a control button 6, and the control button 6 may be communicatively connected to the linear driving part 2 so as to control the expansion and contraction of the linear driving part 2 by the control button 6.

As shown in fig. 1, an example in which the control button 6 is provided to the second clamp body 12 is shown, but not limited thereto, the control button 6 may be provided to the first clamp body 11.

Preferably, as shown in fig. 1 to 3, the test fixture may further include a display portion 4, where the display portion 4 may be in driving connection with the linear driving portion 2, so as to display the pretightening force applied by both the first clamping body 11 and the second clamping body 12 to the battery 7 to be tested, so that a user can grasp the pretightening force of the test fixture to the battery 7 to be tested in real time.

Preferably, as shown in fig. 1 to 3, the display portion 4 may be disposed at a side of the first clamping body 11 facing away from the second clamping body 12, so as to facilitate user reading.

Alternatively, the display unit 4 may be a digital display screen, an LED screen, or other display device.

In an embodiment, as shown in fig. 1 to 3, the test fixture may further include an electrical connection fixing portion 5, where the electrical connection fixing portion 5 is disposed on one side of the clamping space, when the battery 7 to be tested is disposed in the clamping space, the tab of the battery 7 to be tested can be attached to at least a portion of the electrical connection fixing portion 5, so, when the tab of the battery 7 to be tested is attached to the electrical connection fixing portion 5, the tab can be fixed by the electrical connection fixing portion 5, and further, the risk of fracture caused by repeated bending of the tab of the battery 7 to be tested is effectively reduced, and the battery 7 to be tested can be electrically connected with the connecting device (e.g. other batteries 7 to be tested and/or test equipment) through the circuit connection fixing portion.

Preferably, as shown in fig. 1 to 3, both the first clamping body 11 and the second clamping body 12 are provided with the electrical connection fixing portion 5 on the same side in the second direction F2, so that the battery 7 to be tested can be connected with both the connection device of the first clamping body 11 facing away from the second clamping body 12 and the connection device of the second clamping body 12 facing away from the first clamping body 11.

Preferably, as shown in fig. 1 to 3, the above-mentioned electrical connection fixing portion 5 may include two electrical connection pieces 51 disposed at intervals along the third direction F3 for fixing the positive electrode tab and the negative electrode tab of the battery 7 to be measured, respectively.

It should be noted that, the above-mentioned electrical connection fixing portion 5 is not limited to the side above the second direction F2 of both the first clamping body 11 and the second clamping body 12, as long as at least part of the tab of the battery 7 to be tested can be attached to the electrical connection fixing portion 5 when the battery 7 to be tested is disposed in the clamping space, and the electrical connection fixing portion 5 may be disposed at other positions of both the first clamping body 11 and the second clamping body 12.

Preferably, the electrical connection fixing portion 5 may further include a fastening bolt, and the tab of the battery 7 to be measured may be attached and fixed to the electrical connection piece 51 by the fastening bolt, so as to electrically connect the tab and the electrical connection fixing portion 5.

Preferably, the above-mentioned test fixture may further include an insulating coating portion provided on a surface of a portion of the test fixture other than the electrical connection fixing portion 5 to prevent occurrence of false touch short circuit of the tab of the battery 7 to be tested or electrification of the test fixture.

The surfaces of the portions of the test jig other than the electrical connection fixing portion 5 may be understood as the surfaces of the first clamping body 11, the second clamping body 12, and the linear driving portion 2.

Alternatively, the insulating coating may be an insulating coating layer, an insulating plating layer, an insulating glue layer, or other insulating coating structure.

In the embodiment, preferably, as shown in fig. 1 to 3, the first clamping body 11 and the second clamping body 12 are provided with the wiring groove 3, so as to ensure that both sides of the battery 7 to be tested in the first direction F1 can be provided with temperature collection lines.

Preferably, as shown in fig. 1 to 3, the wiring groove 3 may be in a grid shape so as to facilitate grid laying of the temperature acquisition line.

Preferably, as shown in fig. 1 to 3, for the wiring groove 3 provided on the first clamping body 11, at least a portion of the wiring groove 3 can extend to the sidewall of the first clamping body 11, so as to facilitate threading from the sidewall of the first clamping body 11 into the wiring groove 3.

Similarly, as shown in fig. 1 to 3, the layout manner of the wiring groove 3 on the second clamping body 12 may be similar to the layout manner of the first clamping body 11 described above, and will not be repeated.

The embodiment of the second aspect of the present application further provides a testing device, which includes the testing fixture described in any one of the foregoing embodiments, so that the testing fixture has all the beneficial technical effects, and will not be described herein.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims (10)

1. The test fixture is characterized by comprising a linear driving part, a first clamping body and a second clamping body, wherein at least parts of the first clamping body and the second clamping body are opposite to each other, and the linear driving part is connected with the first clamping body and the second clamping body so as to drive the first clamping body and the second clamping body to be close to and far away from each other and used for clamping and releasing a battery to be tested;

The wire groove is arranged on at least one of the first clamping body and the second clamping body, the notch of the wire groove is opened towards the clamping space, and the clamping space is a space between the parts of the first clamping body and the second clamping body, which are opposite to each other.

2. The test fixture of claim 1, further comprising a display portion in driving connection with the linear drive portion to display a preload force applied by both the first clamping body and the second clamping body to the battery under test.

3. The test fixture of claim 2, wherein the test fixture is configured to hold the test fixture,

The display part is arranged on one side of the first clamping body, which is opposite to the second clamping body.

4. The test fixture of claim 1, further comprising an electrical connection fixing portion disposed on one side of the clamping space, wherein when the battery to be tested is disposed in the clamping space, the tab of the battery to be tested can be attached to at least a portion of the electrical connection fixing portion.

5. The test fixture of claim 4, wherein the test fixture is configured to hold the test fixture,

The same sides of the first clamping body and the second clamping body are respectively provided with the electric connection fixing part.

6. The test fixture of claim 4, wherein the electrical connection fixing portion includes at least two electrical connection tabs arranged at intervals for respectively fixing tabs of different polarities of the battery to be tested.

7. The test fixture of claim 4, further comprising an insulating coating portion, wherein a surface of a portion of the test fixture other than the electrical connection fixing portion is provided with the insulating coating portion.

8. The test fixture according to any one of claims 1 to 7, wherein,

The first clamping body and the second clamping body are both provided with the wiring groove.

9. The test fixture according to any one of claims 1 to 7, wherein,

The wiring grooves are in a grid shape;

At least a portion of the wire slot can extend to a sidewall of the first clamping body and/or the second clamping body to facilitate threading from the sidewall into the wire slot.

10. A test device comprising a test fixture as claimed in any one of claims 1 to 9.