Temperature testing device

Abstract

The utility model relates to the technical field of lithium battery testing, in particular to a temperature testing device. The temperature testing device comprises a jig, a driving mechanism and a temperature detection piece, the jig is used for fixing the battery, the temperature detection piece is installed at the driving end of the driving mechanism, and the driving mechanism is used for driving the temperature detection piece to be close to the battery on the jig in the first direction so as to abut against the battery to monitor the temperature of the battery. Meanwhile, the mounting position of the temperature detection piece on the driving mechanism is adjustable, so that the mounting position of the temperature detection piece can be adjusted according to the position of a preset test point position on the battery, and the temperature detection piece is opposite to the preset test point position of the battery; therefore, it is ensured that the temperature detection piece can be accurately positioned at the preset test point position of the battery to monitor the temperature of the battery, and compared with a mode of fixing the temperature detection piece through manual dispensing, the test efficiency can be effectively improved, the stability of contact between the temperature detection piece and the battery is ensured, and the battery is prevented from being damaged due to wrong dripping of glue.

Description

Technical Field

[0001] This application relates to the field of lithium battery testing technology, and in particular to a temperature testing device. Background Technology

[0002] In lithium battery performance research and safety assessment, temperature testing, such as temperature distribution testing, is typically required. During testing, thermocouples need to be placed at each test point on the lithium battery. Currently, the industry standard for thermocouple fixing is the adhesive application method, which uses glue to attach the thermocouples to the test points. However, this method has several drawbacks. For example, manually attaching thermocouples is time-consuming, labor-intensive, and inefficient; the thermocouples are also prone to detachment due to weak adhesion, leading to abnormal test data. Furthermore, if glue is applied incorrectly to test points on the battery protection board, it cannot be removed, potentially damaging components on the protection board.

[0003] Therefore, there is an urgent need to develop a new non-destructive, repeatable, and highly reliable temperature distribution measurement technology. Utility Model Content

[0004] The purpose of this invention is to provide a temperature testing device to solve, to a certain extent, the technical problems of low testing efficiency, poor testing stability, and easy damage to battery components in the prior art.

[0005] This utility model provides a temperature testing device, including a fixture, a driving mechanism, and a temperature detection element;

[0006] The fixture is used to fix the battery to one side of the temperature detection element in a first direction. The temperature detection element is adjustablely positioned at the drive end of the drive mechanism. The temperature detection element can move towards the fixture in the first direction under the drive of the drive mechanism, so that the temperature detection element abuts against the preset test point of the battery.

[0007] Furthermore, the fixture includes a base, on which a first abutment, a second abutment, and a first slider are provided;

[0008] The battery can be placed on the base, and one end of the battery in the length direction abuts against the first abutting part, and one side of the battery in the width direction abuts against the second abutting part;

[0009] The first slider is located on the side of the battery away from the second abutment. The first slider is slidable along the width direction of the battery, so that the battery can be limited and clamped between the first slider and the second abutment.

[0010] Furthermore, the fixture also includes a second slider and a first fastener;

[0011] The base has a slide hole that passes through the base, and the length of the slide hole extends along the width of the battery.

[0012] The second slider is located on the side of the base opposite to the first slider. The first slider and the second slider are connected by the first fastener passing through the slide hole, so that the first slider and the second slider clamp or loosen the base.

[0013] Furthermore, the base has a guide groove on the side facing the second slider. The length direction of the guide groove extends along the length direction of the slide hole. The slide hole penetrates the bottom wall of the guide groove. The second slider is slidably disposed in the guide groove along the length direction of the guide groove.

[0014] Furthermore, the temperature testing device includes a first bracket, and the driving mechanism includes a support, a handle, a transmission component, and a connecting component. The support is fixed to the first bracket, and one end of the handle is provided with a first pivot and a second pivot at intervals. The handle is pivotally connected to the support through the first pivot, and the handle is pivotally connected to one end of the transmission component through the second pivot.

[0015] The connector is movably disposed on the support along the first direction, and one end of the connector is pivotally connected to the end of the transmission member away from the second pivot. The other end of the connector is provided with a second bracket, and the temperature detection element is installed on the second bracket.

[0016] Furthermore, the first bracket is provided with a guide rail, which is arranged along the first direction, and the first bracket is slidably disposed on the guide rail.

[0017] Furthermore, the guide rail is provided with a plurality of locking holes spaced apart along the length of the guide rail, and the locking holes are used to insert limit pins.

[0018] Furthermore, the second bracket is provided with a plurality of first connection holes spaced apart;

[0019] The temperature sensing element is provided with a connecting rod, and the end of the connecting rod away from the temperature sensing element is provided with a second connecting hole. The second connecting hole can be opposite to any of the first connecting holes so that a second fastener can be inserted on the connecting rod and the second bracket.

[0020] Furthermore, the temperature sensing element includes a spring-loaded pin and a thermocouple;

[0021] The spring pin includes a fixed section and a telescopic section. The fixed section is connected to the drive end of the drive mechanism, and the telescopic section is elastically and slidably connected to the end of the fixed section facing the battery.

[0022] The fixed section and the telescopic section are hollow inside to accommodate the thermocouple, which is connected to the telescopic section, and the temperature measuring end of the thermocouple extends from the section of the telescopic section away from the fixed section.

[0023] Furthermore, the spring pin is a polytetrafluoroethylene spring pin, a polypropylene spring pin, or an alumina ceramic spring pin.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] The temperature testing device provided by this utility model includes a fixture, a driving mechanism, and a temperature detection element. The fixture is used to fix the battery to be tested on one side of the temperature detection element in a first direction, so that the temperature measuring end of the temperature detection element faces the battery on the fixture. The temperature detection element is installed on the driving end of the driving mechanism, which is used to drive the temperature detection element to reciprocate along the first direction, so that the temperature detection element moves away from the fixture, so as to facilitate the loading and unloading of the battery on the fixture, or to bring the temperature detection element close to the fixture and the battery on the fixture, so as to monitor the temperature of the battery by contacting it. Meanwhile, the installation position of the temperature detection component on the drive end of the drive mechanism is adjustable. When testing the battery temperature, the installation position of the temperature detection component can be adjusted according to the position of the preset test point on the battery, so that the temperature detection component is aligned with the preset test point on the battery. Then, the drive mechanism is used to bring the temperature detection component closer to the battery so that it abuts against the preset test point on the battery and remains in abutting position during the test. This ensures that the temperature detection component can be accurately positioned at the preset test point on the battery to monitor the battery temperature. Moreover, compared with the method of manually applying glue to fix the temperature detection component, this method can effectively improve the testing efficiency, ensure the stability of the contact between the temperature detection component and the battery, and avoid damage to the battery due to glue being applied to the wrong position. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the temperature testing device provided in an embodiment of the present utility model;

[0028] Figure 2 A schematic diagram of the fixture for the temperature testing device provided in this embodiment of the utility model;

[0029] Figure 3 A cross-sectional schematic diagram of the fixture for the temperature testing device provided in an embodiment of this utility model;

[0030] Figure 4 A schematic diagram of the drive mechanism of the temperature testing device provided in this embodiment of the utility model.

[0031] Figure label:

[0032] 1- Fixture, 11- Base, 12- First abutment, 13- Second abutment, 14- First slider, 15- Slide hole, 16- Guide groove, 17- Second slider, 18- First fastener, 2- Drive mechanism, 21- Handle, 22- Transmission component, 23- Connector, 24- Support, 25- First bracket, 26- Second bracket, 27- Guide rail, 3- Temperature detection component, 31- Connecting rod, a- First direction. Detailed Implementation

[0033] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0034] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0035] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The following reference Figures 1 to 4 This application describes a temperature testing apparatus according to some embodiments.

[0039] This application provides a temperature testing device, such as... Figure 1 The temperature testing device includes a fixture 1, a driving mechanism 2, and a temperature detection element 3. The fixture 1 is used to fix the battery to be tested on one side of the temperature detection element 3 in the first direction a, so that the temperature measuring end of the temperature detection element 3 faces the battery on the fixture 1. The temperature detection element 3 is installed on the driving end of the driving mechanism 2. The driving mechanism 2 is used to drive the temperature detection element 3 to reciprocate along the first direction a, so that the temperature detection element 3 moves away from the fixture 1, so as to facilitate the loading and unloading of the battery on the fixture 1, or to bring the temperature detection element 3 close to the fixture 1 and the battery on the fixture 1, so as to monitor the temperature of the battery by contacting it.

[0040] Meanwhile, the installation position of the temperature detection element 3 at the drive end of the drive mechanism 2 is adjustable. When testing the battery temperature, the installation position of the temperature detection element 3 can be adjusted according to the position of the preset test point on the battery, so that the temperature detection element 3 is opposite to the preset test point on the battery. Then, the drive mechanism 2 is used to bring the temperature detection element 3 closer to the battery so that it abuts against the preset test point on the battery and remains in abutting state during the test. This ensures that the temperature detection element 3 can be accurately positioned at the preset test point on the battery to monitor the battery temperature. Moreover, compared with the method of manually applying glue to fix the temperature detection element 3, this method can effectively improve the test efficiency, ensure the stability of the contact between the temperature detection element 3 and the battery, and avoid damage to the battery due to glue being applied to the wrong position.

[0041] It should be noted that one or more temperature detection elements 3 can be installed on the drive end of the drive mechanism 2 to achieve single-point temperature testing of the battery or multi-point temperature distribution testing.

[0042] In one embodiment of this application, preferably, as shown below, Figure 2 As shown, the fixture 1 includes a base 11, which can be placed horizontally. The upper surface of the base 11 forms a support surface for supporting the battery. At this time, the first direction a is the vertical direction, and the temperature detection element 3 is located above the base 11.

[0043] The base 11 is provided with a first abutment part 12. When the battery is placed in a predetermined position on the base 11, one end of the battery in the length direction (specifically, the end of the battery away from its own protection plate) abuts against the first abutment part 12, thereby using the abutment part to limit the position of the battery on the base 11 along the length direction of the battery.

[0044] The base 11 is also provided with a second abutment 13 and a first slider 14. When the battery is placed in a predetermined position on the base 11, the second abutment 13 is located on one side of the battery in the width direction and abuts against the battery. The first slider 14 is located on the other side of the battery in the width direction and can slide along the width direction of the battery, so that the first slider 14 and the side of the battery away from the second abutment 13 are tightly abutted. Thus, by using the cooperation of the first slider 14 and the second abutment 13, the battery is limited and clamped along the width direction of the battery, thereby fixing the battery on the base 11, so that the battery will not move during the subsequent temperature monitoring process and cause the temperature measurement point to be inaccurate.

[0045] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, the fixture 1 also includes a second slider 17 and a first fastener 18. The first slider 14 is located above the base 11, and the second slider 17 is located below the base 11 and is opposite to the first slider 14. The base 11 has a slide hole 15 that passes through the base 11. The length of the slide hole 15 extends along the width of the battery on the base 11, and the first slider 14 and the second slider 17 are connected by the first fastener 18 that passes through the slide hole 15. For example, the first slider 14 has a through hole, and the second slider 17 has a threaded hole. The through hole, the threaded hole, and the slide hole 15 are opposite to each other. One end of the first fastener 18 is provided with a nut, and the other end of the first fastener 18 can pass through the through hole and the slide hole 15 of the first slider 14 and be screwed into the threaded hole of the second slider 17. Adjusting the first fastener 18 can either clamp the first slider 14 and the second slider 17 to the base 11 so that they cannot move, or loosen the first slider 14 and the second slider 17 from the base 11 so that they can move along the length of the slide hole 15, thereby adjusting the position of the first slider 14 and the second slider 17 along the width of the battery.

[0046] In this embodiment, preferably, the lower surface of the base 11 is provided with a guide groove 16. The length direction of the guide groove 16 extends along the length direction of the slide hole 15, and the position of the guide groove 16 is opposite to the position of the slide hole 15. The slide hole 15 penetrates the bottom wall of the guide groove 16. The second slider 17 is slidably disposed in the guide groove 16 along the length direction of the guide groove 16, thereby using the guide groove 16 to guide the sliding of the second slider 17 and the first slider 14 along the width direction of the battery.

[0047] In one embodiment of this application, preferably, as shown below, Figure 4 As shown, the temperature testing device includes a first bracket 25 for mounting a drive mechanism 2. The drive mechanism 2 includes a support 24, a handle 21, a transmission component 22, and a connecting component 23. The support 24 is fixed to the first bracket 25. One end of the handle 21 is provided with a first pivot and a second pivot at an interval. The handle 21 is pivotally connected to the support 24 via the first pivot, and the handle 21 is pivotally connected to one end of the transmission component 22 via the second pivot. The connecting component 23 is movably mounted on the first bracket 25 along a first direction a. One end of the connecting component 23 is pivotally connected to the end of the transmission component 22 away from the second pivot via a third pivot. The first pivot, the second pivot, and the third pivot are all parallel to each other and perpendicular to the first direction a. The other end of the connecting component 23 is fixedly connected to a second bracket 26, and temperature detection components 3 are all mounted on the second bracket 26. Thus, pulling the handle 21 up and down around the first pivot causes the connecting component 23 to reciprocate along the first direction a, thereby causing the second bracket 26 and the temperature detection components 3 on the second bracket 26 to reciprocate along the first direction a.

[0048] In this embodiment, preferably, the first bracket 25 is provided with a guide rail 27, the length direction of the guide rail 27 is set along the first direction a, and the second bracket 26 is slidably disposed on the guide rail 27, thereby ensuring that the second bracket 26 and the temperature detection element 3 on the second bracket 26 can move stably along the first direction a when driven by the driving mechanism 2, thereby ensuring that the temperature detection element 3 is accurately located at the preset test point of the battery.

[0049] In this embodiment, preferably, the guide rail 27 is provided with a plurality of locking holes for inserting limit pins at intervals along the length direction of the guide rail 27, so that when the second bracket 26 moves the temperature detection element 3 to the required position, the limit pins can be inserted into the locking holes above and below the second bracket 26 to ensure that the temperature detection element 3 will not detach from the battery due to movement during the test, thereby ensuring the stability of the battery temperature test.

[0050] In one embodiment of this application, preferably, the second bracket 26 is provided with a plurality of first connecting holes spaced apart, the temperature sensing element 3 is provided with a connecting rod 31, and the end of the connecting rod 31 away from the temperature sensing element 3 is provided with a second connecting hole. The second connecting hole can be opposite to any of the first connecting holes so that a second fastener can be inserted between the connecting rod 31 and the second bracket 26, so that the temperature sensing element 3 is installed on the second bracket 26 through the connecting rod 31. During installation, a suitable position of the first connecting hole can be selected for installation, and the connecting rod 31 can be rotated around the axis of the first connecting hole to adjust the position of the temperature sensing element 3.

[0051] In this embodiment, preferably, the plurality of first connection holes on the second bracket 26 are arranged in a multi-row, multi-column array along the width and length directions of the battery on the fixture 1.

[0052] In one embodiment of this application, preferably, the temperature sensing element 3 includes a spring pin and a thermocouple. The spring pin includes a fixed section and a telescopic section. A connecting rod 31 is provided on the fixed section for mounting to a second bracket 26 at the drive end of the drive mechanism 2. The telescopic section is located on the side of the fixed section facing the fixture 1, and the telescopic section and the fixed section are elastically slidably engaged. Specifically, the telescopic section is located below the fixed section, and the upper end of the telescopic section is slidably inserted into the fixed section. An elastic element is provided inside the fixed section, and both ends of the elastic element abut against the fixed section and the telescopic section respectively, so that the telescopic section tends to move downward under the elastic force of the elastic element. The interiors of both the fixed section and the telescopic section are hollow to allow the thermocouple to pass through. The thermocouple is connected to the telescopic section, and the lower end of the thermocouple, i.e., the temperature measuring end of the thermocouple, extends out of the telescopic section. Thus, when the temperature sensing element 3 abuts against the battery to monitor the battery temperature, the temperature sensing element 3 and the battery are in elastic contact to ensure the stability of the contact between the temperature sensing element 3 and the battery.

[0053] In this embodiment, preferably, the spring pin is made of polytetrafluoroethylene, polypropylene, alumina ceramic, etc., so that the spring pin has good thermal insulation performance and ensures the accuracy of temperature measurement by the internal thermocouple.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A temperature testing device, characterized in that, Includes fixtures, drive mechanisms, and temperature sensing components; The fixture is used to fix the battery to one side of the temperature detection element in a first direction. The temperature detection element is adjustablely positioned at the drive end of the drive mechanism. The temperature detection element can move towards the fixture in the first direction under the drive of the drive mechanism, so that the temperature detection element abuts against the preset test point of the battery.

2. The temperature testing device according to claim 1, characterized in that, The fixture includes a base, on which a first abutment part, a second abutment part, and a first slider are provided; The battery can be placed on the base, and one end of the battery in the length direction abuts against the first abutting part, and one side of the battery in the width direction abuts against the second abutting part; The first slider is located on the side of the battery away from the second abutment. The first slider is slidable along the width direction of the battery, so that the battery can be limited and clamped between the first slider and the second abutment.

3. The temperature testing device according to claim 2, characterized in that, The fixture also includes a second slider and a first fastener; The base has a slide hole that passes through the base, and the length of the slide hole extends along the width of the battery. The second slider is located on the side of the base opposite to the first slider. The first slider and the second slider are connected by the first fastener passing through the slide hole, so that the first slider and the second slider clamp or loosen the base.

4. The temperature testing device according to claim 3, characterized in that, The base has a guide groove on the side facing the second slider. The length of the guide groove extends along the length of the slide hole, and the slide hole penetrates the bottom wall of the guide groove. The second slider is slidably disposed in the guide groove along the length of the guide groove.

5. The temperature testing device according to claim 1, characterized in that, The temperature testing device includes a first bracket, and the driving mechanism includes a support, a handle, a transmission component, and a connecting component. The support is fixed on the first bracket, and one end of the handle is provided with a first pivot and a second pivot at intervals. The handle is pivotally connected to the support through the first pivot, and the handle is pivotally connected to one end of the transmission component through the second pivot. The connector is movably disposed on the support along the first direction, and one end of the connector is pivotally connected to the end of the transmission member away from the second pivot. The other end of the connector is provided with a second bracket, and the temperature detection element is installed on the second bracket.

6. The temperature testing device according to claim 5, characterized in that, The first bracket is provided with a guide rail, which is arranged along the first direction, and the first bracket is slidably mounted on the guide rail.

7. The temperature testing device according to claim 6, characterized in that, The guide rail is provided with a plurality of locking holes spaced apart along the length of the guide rail, and the locking holes are used to insert limit pins.

8. The temperature testing device according to claim 5, characterized in that, The second bracket is provided with a plurality of first connection holes at intervals; The temperature sensing element is provided with a connecting rod, and the end of the connecting rod away from the temperature sensing element is provided with a second connecting hole. The second connecting hole can be opposite to any of the first connecting holes so that a second fastener can be inserted on the connecting rod and the second bracket.

9. The temperature testing device according to claim 1, characterized in that, The temperature sensing element includes a spring-loaded pin and a thermocouple; The spring pin includes a fixed section and a telescopic section. The fixed section is connected to the drive end of the drive mechanism, and the telescopic section is elastically and slidably connected to the end of the fixed section facing the battery. The fixed section and the telescopic section are hollow inside to accommodate the thermocouple, which is connected to the telescopic section, and the temperature measuring end of the thermocouple extends from the section of the telescopic section away from the fixed section.

10. The temperature testing device according to claim 9, characterized in that, The spring pin is a polytetrafluoroethylene spring pin, a polypropylene spring pin, or an alumina ceramic spring pin.

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