Battery test cabinet

Abstract

The utility model relates to the technical field of battery test equipment, in particular to a battery test cabinet. The battery test cabinet comprises a cabinet body, a shaping tube and a temperature sensor. The cabinet body is used for accommodating a to-be-tested battery. The shaping pipe is arranged on the inner wall of the cabinet body, and the first end of the shaping pipe is connected to the cabinet body. The temperature sensor is arranged at the second end of the shaping pipe and used for monitoring the temperature of the battery to be measured. Wherein the shaping pipe is configured to be deformable to send the temperature sensor to a target position close to the battery to be measured, and the shaping pipe is shaped after the temperature sensor is located at the target position. When the to-be-tested battery is detected, the temperature sensor can be sent to the target position around the to-be-tested battery through the shaping pipe, and the distance between the temperature sensor and the to-be-tested battery can be remarkably reduced, so that the delay when the temperature sensor performs temperature detection on the to-be-tested battery is remarkably reduced, and the accuracy of the to-be-tested battery test structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery testing equipment technology, and in particular to a battery testing cabinet. Background Technology

[0002] With the booming development of the new energy industry, lithium-ion battery products are iterating at an unprecedented pace to adapt to the ever-changing market demands. During the lithium battery R&D stage, rigorous testing is crucial to ensure that the final product meets customer requirements. As the core equipment for battery performance testing, the battery testing cabinet plays an extremely important role in guiding battery performance development and optimizing battery management system control strategies.

[0003] As is well known, temperature has a significant impact on the performance, lifespan, and safety of lithium batteries. For example, the charge and discharge performance of batteries varies significantly under different temperature conditions. As the temperature decreases, the electrochemical reaction rate slows down, and the battery's internal resistance increases, leading to a reduction in the battery's discharge capacity and discharge plateau, which in turn affects its power and energy output. Therefore, the temperature control accuracy of the battery test cabinet is crucial to ensuring the accuracy of battery test results.

[0004] In existing technologies, battery test cabinets typically monitor the temperature of the batteries under test inside the cabinet using temperature sensors located on the top, sides, or bottom. However, in practical applications, to accommodate the testing needs of lithium batteries of different sizes, the internal volume of the lithium battery test cabinet's temperature control chamber is often designed to be relatively large. Therefore, there is a certain spatial distance between the temperature sensors located on the inner wall of the chamber and the batteries under test. In addition, the efficiency of heat conduction in the air is relatively low, resulting in a delay in the temperature monitoring of the batteries under test by the temperature sensors, which affects the accuracy of the test results. Utility Model Content

[0005] This invention provides a battery testing cabinet for reducing the distance between the temperature sensor and the battery under test.

[0006] This utility model provides a battery testing cabinet, comprising:

[0007] A cabinet for housing the battery to be tested;

[0008] A shaping tube, wherein the shaping tube is disposed on the inner wall of the cabinet, and the first end of the shaping tube is connected to the cabinet body; and

[0009] A temperature sensor is disposed at the second end of the shaping tube, and the temperature sensor is used to monitor the temperature of the battery under test.

[0010] The shaping tube is configured to deform to deliver the temperature sensor to a target location near the battery under test, and to be shaped after the temperature sensor is at the target location.

[0011] In some embodiments, a control unit is also included, which is electrically connected to the temperature sensor to acquire the temperature of the battery under test in real time.

[0012] In some embodiments, the control unit is disposed on the outer wall of the cabinet, and the cabinet is provided with a first through hole; the battery test cabinet also includes a signal transmission line, which passes through the first through hole and is connected at both ends to the control unit and the temperature sensor respectively.

[0013] In some embodiments, the shaping tube is provided with a receiving cavity communicating with the first through hole. The receiving cavity extends along the extension direction of the shaping tube and passes through the first end and the second end. The signal transmission line passes through the receiving cavity and the first through hole in sequence.

[0014] In some embodiments, a reel is also included, which is disposed on the inner wall of the cabinet, the first end of which is connected to the reel, and the shaping tube is capable of being wound around the reel.

[0015] In some embodiments, the reel is provided with a second through hole, the second through hole penetrates the reel and the two ends of the second through hole are respectively connected to the first through hole and the receiving cavity, and the signal transmission line passes through the receiving cavity, the second through hole and the first through hole in sequence.

[0016] In some embodiments, the second through hole is provided with an internal thread, the first end is provided with an external thread, and the first end is connected to the second through hole by a thread.

[0017] In some embodiments, the control unit, the first through hole, and the reel are all located on the top of the cabinet, and the axis of the first through hole, the axis of the second through hole, and the axis of the reel coincide.

[0018] In some embodiments, a limiting portion is provided on the side of the reel, and a gap is formed between the limiting portion and the inner wall of the cabinet for accommodating the shaping tube wound on the reel.

[0019] In some embodiments, the shaping tube is a metal tube.

[0020] This application provides a battery testing cabinet, which has at least the following advantages compared with the prior art:

[0021] When testing the battery under test, the temperature sensor can be delivered to the target location around the battery via a shaping tube. Compared to existing technologies that place the temperature sensor on the top, side, or bottom of the battery test cabinet, this significantly reduces the distance between the temperature sensor and the battery under test, thereby significantly reducing the delay in temperature detection and improving the accuracy of the battery test structure. Furthermore, by adjusting the length and shape of the shaping tube, batteries of different sizes and shapes can be tested, and targeted testing of a specific part of the battery can be performed, expanding the applicability of the testing. Attached Figure Description

[0022] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0023] Figure 1 This is a cross-sectional view of the first embodiment of the battery testing cabinet provided in this application;

[0024] Figure 2 This is a cross-sectional view of a second embodiment of the battery testing cabinet provided in this application.

[0025] Figure 3 This is a structural schematic diagram of the installation position of the shaping tube and the reel provided in the embodiment of this application.

[0026] Figure label:

[0027] 1-Battery testing cabinet;

[0028] 11-Cabinet body; 111-First through hole;

[0029] 12-Shaping tube; 121-First end; 122-Second end; 123-Receiving cavity;

[0030] 13-Temperature sensor;

[0031] 14-Control unit;

[0032] 15 - Signal transmission line;

[0033] 16 - Reel; 161 - Second through hole;

[0034] 17-Limiting part. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In this application, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0038] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0039] Please refer to the following: Figure 1 and Figure 2 This application provides a battery testing cabinet 1, including a cabinet body 11, a shaping tube 12, and a temperature sensor 13. The cabinet body 11 is used to house the battery to be tested. The shaping tube 12 is disposed on the inner wall of the cabinet body 11, and its first end 121 is connected to the cabinet body 11. The temperature sensor 13 is disposed on the second end 122 of the shaping tube 12, and is used to monitor the temperature of the battery to be tested. The shaping tube 12 is configured to deform to deliver the temperature sensor 13 to a target position near the battery to be tested, and to solidify after the temperature sensor 13 is in the target position.

[0040] In this embodiment, when the battery testing cabinet 1 is not in operation, the shaping tube 12 can be coiled into a spiral-like structure to avoid occupying space inside the battery testing cabinet 1 when not in operation. When the battery testing cabinet 1 is in operation, the battery to be tested is placed inside the battery testing cabinet 1. The operator can adjust the shape of the shaping tube 12 according to the size of the battery to be tested. The adjusted second end 122 can be located near the battery to be tested and deliver the temperature sensor 13 to the target position. After the temperature sensor 13 is in the target position, the shaping tube 12 is shaped, thereby ensuring that the temperature sensor 13 is in the target position and does not shift.

[0041] In one example, see Figure 1When the battery under test is small, the operator can adjust the length of the shaping tube 12 to a longer state, for example, with the first end 121 to the second end 122 extending in a roughly straight line, ensuring that the second end 122 can extend to the vicinity of the battery under test, thereby ensuring that the temperature sensor 13 reaches the target position. When the battery under test is large, the operator can adjust the length of the shaping tube 12 to a shorter state, for example, with the portion of the shaping tube 12 near the first end 121 still coiled, while the portion of the shaping tube 12 near the second end 122 is straight, ensuring that the second end 122 can retract to the vicinity of the battery under test, thereby ensuring that the temperature sensor 13 reaches the target position.

[0042] See another example. Figure 2 When it is necessary to focus on measuring the temperature of a certain part of the battery under test, and the shaping tube 12 cannot reach the part under test when it is stretched in a straight line but interferes with other parts of the battery under test, the staff can adjust the shape of the shaping tube 12 so that the shape of the shaping tube 12 can roughly adapt to the external shape of the battery under test, so as to avoid interference between the shaping tube 12 and the battery under test. At the same time, the second end 122 of the shaping tube 12 after the shape adjustment can reach the part under test.

[0043] In this embodiment, when testing the battery under test, the temperature sensor 13 can be delivered to a target location around the battery through the shaping tube 12. Compared to the prior art where the temperature sensor 13 is placed on the top, side, or bottom of the battery test cabinet 1, this significantly reduces the distance between the temperature sensor 13 and the battery under test, thereby significantly reducing the delay of the temperature sensor 13 in detecting the temperature of the battery under test and improving the accuracy of the battery test structure. In addition, by adjusting the length and shape of the shaping tube 12, batteries of different sizes and shapes can be tested, and a specific part of the battery under test can be tested at a fixed point, expanding the scope of application of the test.

[0044] Please continue reading. Figure 1 and Figure 2 In some embodiments, the battery test cabinet 1 also includes a control unit 14, which is electrically connected to the temperature sensor 13 to acquire the temperature of the battery under test in real time.

[0045] It is understandable that the control unit 14 can acquire not only the temperature of the battery under test, but also the voltage and current signals of the battery cells under test. It should be noted that the control unit 14 can acquire the voltage and current signals of the battery cells under test through other devices in the battery test cabinet 1, which will not be elaborated upon here.

[0046] The temperature sensor 13 generates a temperature signal after detecting the temperature of the battery under test and transmits it to the control unit 14. After receiving the temperature signal of the battery under test, the control unit 14 can obtain the temperature of the battery under test in real time. Combined with the obtained voltage and current signals of the battery cells under test, it can send corresponding instructions to other devices in the battery test cabinet 1, such as the compressor, heater, and charge / discharge cabinet. These instructions will not be described in detail here.

[0047] Please refer to the following: Figure 1 , Figure 2 and Figure 3 In some embodiments, the control unit 14 is disposed on the outer wall of the cabinet 11, and the cabinet 11 has a first through hole 111. The battery testing cabinet 1 also includes a signal transmission line 15, which passes through the first through hole 111 and is connected at both ends to the control unit 14 and the temperature sensor 13, respectively. The control unit 14 is disposed on the outer wall of the cabinet 11, which allows the staff to directly obtain the temperature of the battery under test, and also avoids mutual interference between the control unit 14 and the interior of the battery testing cabinet 1.

[0048] Temperature sensor 13 is connected to control unit 14 via signal transmission line 15, so that the temperature signal generated by temperature sensor 13 is transmitted to control unit 14 via signal transmission line 15. This can effectively suppress electromagnetic interference and radio frequency interference, reduce signal attenuation and noise, avoid signal distortion, and improve measurement accuracy.

[0049] Since the control unit 14 is located on the outer wall of the cabinet 11, a first through hole 111 is provided in the cabinet 11 to facilitate the routing of the signal transmission line 15. The signal transmission line 15 is connected through the through hole to the temperature sensor 13 inside the cabinet 11 and the control unit 14 outside the cabinet 11.

[0050] Please continue reading. Figure 1 , Figure 2 and Figure 3 In some embodiments, the shaping tube 12 is provided with a receiving cavity 123 that communicates with the first through hole 111. The receiving cavity 123 extends along the extension direction of the shaping tube 12 and passes through the first end 121 and the second end 122. The signal transmission line 15 passes through the receiving cavity 123 and the first through hole 111 in sequence.

[0051] The shaping tube 12 is provided with a receiving cavity 123 extending from the first end 121 to the second end 122, which can facilitate the signal transmission line 15 to run through the inside of the shaping tube 12, thereby protecting the signal transmission line 15. At the same time, when the shaping tube 12 is in a coiled state, it can also prevent the signal transmission line 15 from tangling at different nodes.

[0052] Please continue reading. Figure 1 , Figure 2 and Figure 3 In some embodiments, the battery testing cabinet 1 further includes a reel 16, which is disposed on the inner wall of the cabinet body 11. The first end 121 is connected to the reel 16, and the shaping tube 12 can be wound around the reel 16.

[0053] The reel 16 can be roughly cylindrical in shape. When the battery testing cabinet 1 is not in operation, the shaping tube 12 can be wound around the outer surface of the reel 16 in a spiral shape. The reel 16 provides support for the shaping tube 12, shapes the winding state of the reel 16, and improves the winding efficiency of the shaping tube 12, while reducing the winding time of the shaping tube 12.

[0054] Please continue reading. Figure 1 , Figure 2 and Figure 3 In some embodiments, the reel 16 is provided with a second through hole 161, which penetrates the reel 16 and the two ends of the second through hole 161 are respectively connected to the first through hole 111 and the receiving cavity 123. The signal transmission line 15 is sequentially passed through the receiving cavity 123, the second through hole 161 and the first through hole 111.

[0055] Since the first end 121 of the shaping tube 12 is connected to the reel 16, the signal transmission line 15 needs to be routed through the surface of the reel 16 when it extends from the first end 121 to the first through hole 111 of the cabinet 11. However, the shaping tube 12 may get tangled with the signal transmission line 15 when it is wound around the reel 16. To solve this problem, in this embodiment, a second through hole 161 is provided through the reel 16. One end of the signal transmission line 15 is connected to the temperature sensor 13, and the other end is connected to the control unit 14 outside the cabinet 11 via the receiving cavity 123, the second through hole 161 and the first through hole 111 in sequence. By routing the line from inside the reel 16, the tangling of the signal transmission line 15 and the shaping tube 12 when they are wound around the reel 16 can be avoided, and the exposure of the signal transmission line 15 can also be avoided.

[0056] In some embodiments, the second through hole 161 is provided with an internal thread, and the first end 121 is provided with an external thread, and the first end 121 is connected to the second through hole 161 by a thread.

[0057] The first end 121 is threaded to the second through hole 161, which enhances the connection strength between the shaping tube 12 and the reel 16 and prevents the connection between the shaping tube 12 and the reel 16 from becoming loose after multiple adjustments to the shape or length of the shaping tube 12. The second through hole 161 serves both to connect to the first end 121 and to provide a route for the signal transmission line 15, integrating the functions of connecting the first end 121 and providing a route for the signal transmission line 15 into the second through hole 161.

[0058] In some embodiments, the control unit 14, the first through hole 111, and the reel 16 are all located on the top of the cabinet 11, and the axis of the first through hole 111, the axis of the second through hole 161, and the axis of the reel 16 coincide.

[0059] The control unit 14 is located on the top of the cabinet 11, making it convenient for staff to intuitively obtain test information.

[0060] The reel 16 is positioned at the top of the cabinet 11 so that the shaping tube 12 is also located at the top of the cabinet 11 when it is not in operation and is wound around the reel 16. This makes it convenient for staff to adjust the shaping tube 12 when it changes from an in-operation state to an in-operation state.

[0061] The axis of the first through hole 111 is approximately coincident with the axis of the second through hole 161, which can reduce the distance between the first through hole 111 and the second through hole 161, and thus reduce the distance of the signal transmission line 15 from the second through hole 161 to the first through hole 111.

[0062] The axis of the second through hole 161 is approximately coincident with the axis of the reel 16, that is, the second through hole 161 is approximately located at the center of the reel 16.

[0063] Please see Figure 3 In some embodiments, a limiting part 17 is provided on the side of the reel 16, and a gap is formed between the limiting part 17 and the inner wall of the cabinet 11 for accommodating the shaping tube 12 wound on the reel 16.

[0064] When the battery testing cabinet 1 is not in operation, the shaping tube 12 can be wound around the outer side of the reel 16 in the circumference and form a spiral structure between the limiting part 17 and the inner wall of the cabinet 11. The limiting part 17 can limit the shaping tube 12 when it is wound around the reel 16, preventing the shaping tube 12 from gradually deforming and extending downward under the action of gravity.

[0065] In some embodiments, the shaping tube 12 is a metal tube.

[0066] The shaping tube 12 is a metal tube with good high temperature resistance, which can prevent the shaping tube 12 from melting and maintain good shaping ability when the battery test cabinet 1 is in operation.

[0067] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery testing cabinet, characterized in that, include: A cabinet for housing the battery to be tested; A shaping tube is disposed on the inner wall of the cabinet, and the first end of the shaping tube is connected to the cabinet. as well as A temperature sensor is disposed at the second end of the shaping tube, and the temperature sensor is used to monitor the temperature of the battery under test. The shaping tube is configured to deform to deliver the temperature sensor to a target location near the battery under test, and to be shaped after the temperature sensor is at the target location.

2. The battery testing cabinet according to claim 1, characterized in that, It also includes a control unit, which is electrically connected to the temperature sensor to acquire the temperature of the battery under test in real time.

3. The battery testing cabinet according to claim 2, characterized in that, The control unit is disposed on the outer wall of the cabinet, and the cabinet is provided with a first through hole; the battery test cabinet also includes a signal transmission line, which passes through the first through hole and is connected at both ends to the control unit and the temperature sensor respectively.

4. The battery testing cabinet according to claim 3, characterized in that, The shaping tube is provided with a receiving cavity that communicates with the first through hole. The receiving cavity extends along the extension direction of the shaping tube and passes through the first end and the second end. The signal transmission line passes through the receiving cavity and the first through hole in sequence.

5. The battery testing cabinet according to claim 4, characterized in that, It also includes a reel, which is disposed on the inner wall of the cabinet, with the first end connected to the reel, and the shaping tube can be wound around the reel.

6. The battery testing cabinet according to claim 5, characterized in that, The reel is provided with a second through hole, which penetrates the reel and its two ends are respectively connected to the first through hole and the receiving cavity. The signal transmission line passes through the receiving cavity, the second through hole and the first through hole in sequence.

7. The battery testing cabinet according to claim 6, characterized in that, The second through hole is provided with an internal thread, and the first end is provided with an external thread. The first end is connected to the second through hole by a thread.

8. The battery testing cabinet according to claim 7, characterized in that, The control unit, the first through hole, and the reel are all located on the top of the cabinet, and the axis of the first through hole, the axis of the second through hole, and the axis of the reel coincide.

9. The battery testing cabinet according to claim 5, characterized in that, The side of the reel is provided with a limiting part, and a gap is formed between the limiting part and the inner wall of the cabinet for accommodating the shaping tube wound on the reel.

10. The battery testing cabinet according to any one of claims 1-9, characterized in that, The shaping tube is a metal tube.

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