CN210038082U

CN210038082U - Temperature probe for battery test

Info

Publication number: CN210038082U
Application number: CN201920536053.3U
Authority: CN
Inventors: 徐立峰
Original assignee: Shengfeng Science And Technology (ningbo) Co Ltd
Current assignee: Shengfeng Science And Technology (ningbo) Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-02-07
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a temperature probe for battery test, including needle axle, needle cover, spring and temperature sensor, the spring is established to the epaxial cover of needle, and the holistic installation of the two assembly in the needle cover, and under the exogenic action, the needle axle can move at the axis direction for the needle cover, and can reset under the effect of spring, temperature sensor sets up the one end at the needle axle, just temperature sensor's one end is passed and is exposed the needle cover. The appropriate temperature probe is developed, the product produced in a production line type can be accurately measured, the installation is convenient, the test equipment is effectively protected, and the temperature rise of the tested object is controlled.

Description

Temperature probe for battery test

Technical Field

The utility model relates to a battery production sets up the field, especially relates to a temperature probe that is used for battery test especially lithium cell to test.

Background

With the development of science and technology and society, lithium batteries have become the mainstream of the battery industry due to the unique performance advantages of the lithium batteries. The lithium ion battery is widely applied to portable electric appliances such as notebook computers, video cameras and mobile communication equipment, and a high-capacity lithium ion battery is tried out in electric automobiles, and is expected to become one of main power sources of the electric automobiles in the 21 st century. Therefore, during the production of the lithium battery in an assembly line, the performance test of the lithium battery becomes a key step for determining the market share of the lithium battery, wherein the test of the battery temperature is extremely critical, and the temperature test mode generally adopted in the market at present is exposed K-line lapping.

Therefore the utility model discloses the inventor aims at inventing a temperature probe for battery test to the unable real-time supervision's during lithium cell temperature capability test problem, realizes the lithium cell on the accurate measurement assembly line to according to the effectual performance goodness of aassessment lithium cell of test data.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages, an object of the present invention is to provide a temperature probe for battery testing.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a temperature probe for battery test, includes needle axle, needle cover, spring and temperature sensor, the spring is established to the cover on the needle axle, and the holistic installation of the combination of the two in the needle cover, and under the exogenic action, the needle axle can move at the axis direction for the needle cover, and can reset under the effect of spring, temperature sensor sets up the one end at the needle axle, just temperature sensor's one end is passed and is exposed the needle cover.

Preferably, the temperature sensor is a thermistor. The thermistor has the property that different resistance values of temperature are different, and the temperature of the thermistor is tested by utilizing the performance, namely the specific temperature value of an object in contact with the thermistor is known.

Preferably, the test fixture further comprises a mounting block, wherein the mounting block is provided with at least one mounting hole, the mounting hole is used for mounting and fixing the needle sleeve, and the clamping device clamps the temperature probe through the mounting block and moves along with the lithium battery to be tested. The probe fixing device is used for fixing the whole probe, adjusting the probe according to actual needs and moving along with an object to be detected.

Preferably, the spare mounting holes on the mounting block can be used for mounting current probes or voltage probes, and all the probes in the mounting block are not in contact with each other. The current, voltage and temperature can be tested simultaneously, the consistency of detection is guaranteed, and unnecessary factors are eliminated to interfere with test data.

Preferably, the mounting block is further provided with at least one positioning hole. The number of the positioning holes can be adjusted according to actual requirements, and the overall stability is guaranteed.

Preferably, the needle shaft is made of a conductive material such as brass, and a protective layer is plated on the outer layer of the needle shaft. The electroplating protective layer can prevent the needle shaft body from being oxidized or other problems, and the electroplating protective layer generally adopts metal nickel.

Preferably, the material of the mounting block is plastic, specifically glass fiber reinforced nylon 6, that is, a mixture of nylon 6 and glass fiber with a content of 30%. The main effect is fire-retardant, guarantees can not lead to the unstability of mounting hole because of the test temperature is too high.

Preferably, temperature sensor's the penetration and expose the part of needle cover increases the heat preservation, heat preservation parcel temperature sensor's outside, temperature sensor does not set up the heat preservation with the contact site of the lithium cell that awaits measuring, the heat preservation is silica gel or remaining insulation material. The heat preservation layer is arranged to prevent wind from generating loss of temperature along with the increase of moving speed when the temperature probe moves along with the lithium battery to be detected, so that the temperature probe can timely and accurately detect the temperature above the lithium battery.

The utility model relates to a temperature probe for battery test's beneficial effect is, develops suitable temperature probe, but the product of accurate measurement pipelined production, simple to operate, the temperature rise of very effectual protection test equipment, control quilt test object.

Drawings

FIG. 1 is a schematic diagram of a temperature probe.

Fig. 2 is a left side view of the temperature probe.

Fig. 3 is a schematic structural view of the mounting block.

In the figure:

1-a needle shaft; 2, covering the needle; 3-a spring; 4-a temperature sensor; 5, mounting a block; 6-mounting holes; 7-positioning holes.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

During production of the lithium battery, performance test is required, wherein temperature test of the lithium battery is critical, safety when the lithium battery can be used is determined, and market share of the lithium battery is determined. The bare K-wire lap joint is the most common temperature measurement mode in the market at present, but the mode is not suitable for the battery produced in a production line mode, the lap joint is complicated, the mode cannot follow the action of the detected object, the real-time detection cannot be carried out, and the precision requirement cannot be met.

Therefore need develop a temperature probe, the production of adaptation assembly line and must guarantee test data's accuracy and stability, look up after the data again, the utility model discloses the inventor has noticed thermistor to through the theoretical analysis of system, think that thermistor is the key of realizing detecting the temperature on the assembly line, positive temperature coefficient also or negative temperature coefficient's thermistor homoenergetic realizes this purpose.

Referring to the attached drawings 1-3, the temperature probe for battery testing in the embodiment includes a needle shaft 1, a needle sleeve 2, a spring 3, a temperature sensor 4 and a mounting block 5, the spring 3 is sleeved on the needle shaft 1, and the assembly of the needle shaft 1 and the spring 3 is integrally mounted in the needle sleeve 2, and under the action of external force, the needle shaft 1 can move in the axial direction relative to the needle sleeve 2 and can reset under the action of the spring 3, the temperature sensor 4 is disposed at one end of the needle shaft 1, one end of the temperature sensor 4 penetrates through and is exposed out of the needle sleeve 2, the mounting block 5 is provided with at least one mounting hole 6, the mounting hole 6 is used for mounting and fixing the needle sleeve 2, and a clamping device clamps the temperature probe through the mounting block 5 and moves along with a lithium battery to be tested.

The effect of the special design of the mounting block 5: the spare mounting holes 6 on the mounting block 5 can be used for mounting current probes or voltage probes, all the probes in the mounting block 5 are not in contact with each other, so that the current, voltage and temperature can be tested simultaneously, the detection consistency is ensured, and unnecessary factor interference test data is eliminated.

The critical temperature sensor 4 is a thermistor. The thermistor has the property that different resistance values of temperature are different, and the temperature of the thermistor is tested by utilizing the performance, namely the specific temperature value of the surface of an object in contact with the thermistor is known.

To ensure the accuracy of the temperature: temperature sensor 4 passes and the part that exposes needle cover 2 increases the heat preservation, heat preservation parcel temperature sensor 4's outside, temperature sensor 4 does not set up the heat preservation with the contact site of the lithium cell that awaits measuring, the heat preservation is silica gel or all the other insulation material, it is when moving along with the lithium cell that awaits measuring to set up the heat preservation for when temperature probe, can not be along with the increase of translation rate, produce the loss of wind and then emergence temperature, guaranteed that temperature probe can be timely and accurate detect the temperature above the lithium cell.

And (3) designing the rest: the mounting block 5 is also provided with at least one positioning hole 7, the number of the positioning holes 7 can be adjusted according to actual requirements, and the overall stability is ensured; the needle shaft 1 is made of conductive materials such as brass, and a protective layer is integrally electroplated on the outer layer of the needle shaft 1, the protective layer can prevent the main body of the needle shaft 1 from being oxidized or causing other problems, and the protective layer is generally made of metal nickel; the material of installation piece 5 is plastics, specifically is glass fiber reinforced nylon 6, and nylon 6 and the content are the mixture that 30% glass fiber constitutes promptly, and main effect is fire-retardant, guarantees can not lead to the unstability of mounting hole 6 because of the test temperature is too high.

The method comprises the following basic operation steps: the temperature probe is clamped by a pneumatic clamping jaw or other clamps, an exposed end of a thermistor of the temperature probe is in contact with a lithium battery to be tested, in order to realize the motion of following the object to be tested on a production line, the starting clamping jaw or other clamps are connected with a mobile platform for placing the object to be tested, or an induction device is designed, so that the temperature probe follows the object to be tested in real time, the linkage of the temperature probe and the object to be tested is realized, accurate test data is obtained, the device is very convenient to install, the cost is very low, and the device is suitable for industrial production line production.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A temperature probe for battery testing, comprising: including needle axle (1), needle cover (2), spring (3) and temperature sensor (4), spring (3) are established to the cover on needle axle (1), and the holistic installation of the two in needle cover (2), and under the exogenic action, needle axle (1) can move at the axis direction for needle cover (2), and can reset under the effect of spring (3), temperature sensor (4) set up the one end at needle axle (1), just the one end of temperature sensor (4) is passed and is exposed needle cover (2).

2. The temperature probe for battery testing of claim 1, wherein: the temperature sensor (4) is a thermistor.

3. The temperature probe for battery testing of claim 1, wherein: the temperature probe is characterized by further comprising a mounting block (5), wherein at least one mounting hole (6) is formed in the mounting block (5), the mounting hole (6) is used for mounting and fixing the needle sleeve (2), and the clamping device clamps the temperature probe through the mounting block (5) and moves along with the lithium battery to be tested.

4. A temperature probe for battery testing according to claim 3, wherein: the spare mounting holes (6) on the mounting block (5) can be used for mounting current probes or voltage probes, and all the probes in the mounting block (5) are not in contact with each other.

5. A temperature probe for battery testing according to claim 3, wherein: the mounting block (5) is further provided with positioning holes (7), and at least one positioning hole (7) is formed in each positioning hole.

6. The temperature probe for battery testing of claim 1, wherein: the needle shaft (1) is made of conductive materials such as brass, and a protective layer is integrally electroplated on the outer layer of the needle shaft.

7. A temperature probe for battery testing according to claim 3, wherein: the mounting block (5) is made of plastic, specifically glass fiber reinforced nylon 6.

8. The temperature probe for battery testing of claim 1, wherein: the penetration of temperature sensor (4) exposes the part of needle cover (2) increases the heat preservation, the outside of heat preservation parcel temperature sensor (4), temperature sensor (4) do not set up the heat preservation with the contact site of the lithium cell that awaits measuring, the heat preservation is silica gel or remaining insulation material.