Current line temperature control device and charging and discharging experimental equipment
By setting heat dissipation components outside the current line of the charging and discharging equipment and using the fluid circulation device to perform heat exchange, the problem of thermal conduction of the current line affecting the test data is solved, and the stable matching of the current line and the sample temperature is achieved, which improves the accuracy of the experiment and Security.
Patent Information
- Application Number
- CN202420158115.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-22
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-22
AI Technical Summary
During the test, the current line of the existing charging and discharging equipment is exposed to the air, resulting in uneven heat conduction, which affects the accuracy of the sample temperature measurement data and poses safety hazards.
A current line temperature control device is designed. By setting heat dissipation components outside the current line and supplying heat exchange media to the heat dissipation components with a fluid circulation device, rapid heat conduction and heat dissipation are achieved, ensuring that the temperature difference between the current line temperature and the sample is 0℃, avoiding Heat is transmitted to the sample.
It effectively avoids the deviation of the test results from the actual results due to temperature differences, improves the accuracy and safety of the test data, and ensures the reliability of the charge and discharge experiment.
Smart Images
Figure CN222167187U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery experimental equipment, in particular to a current line temperature control device and a charging and discharging experimental equipment with the temperature control device. Background Art
[0002] The performance of the battery is affected by many factors such as battery temperature, battery internal resistance, number of charge and discharge cycles, discharge current, and discharge method. Various accidents often occur during the charge and discharge process of lithium batteries, resulting in personal injury and property loss. Therefore, it is very necessary to conduct a comprehensive test on the battery, and among the various tests of the battery, the charge and discharge test of the battery is an important part.
[0003] The electric vehicle industry usually uses charging and discharging equipment to perform charging and discharging tests on battery packs, modules, and cells to detect various battery data.
[0004] However, in the process of testing samples using existing charging and discharging equipment, the current lines of the charging and discharging equipment will release and conduct a large amount of heat. At present, the current lines of power battery charging and discharging equipment are basically exposed to the air, relying on the environment to cool down naturally and exchanging heat with the environment through thermal convection. This method is highly dependent on the environment and has poor results. In addition, the heat dissipation effect varies greatly due to different external wrapping materials of the current lines. When the temperature transmitted by the current line affects the temperature of the sample, it will cause errors in the test data of the sample, and the test results will deviate from the actual results. Therefore, it has a greater impact on the test results of the sample itself. The same batch of samples may obtain completely different results, posing a safety hazard. Utility Model Content
[0005] The utility model provides a current line temperature control device and a charge and discharge experimental device, which are used to solve the defect in the prior art that heat conduction between the current line and the sample affects the accuracy of the test data, causing the test result of the sample to deviate from the real result.
[0006] In one aspect, the utility model provides a current line temperature control device, comprising:
[0007] A heat dissipation component is sleeved on the outside of the current line and is used for heat exchange with the current line; the heat dissipation component has a fluid channel;
[0008] A fluid circulation device, connected to the heat dissipation component through a pipeline, capable of supplying a heat exchange medium to the heat dissipation component;
[0009] A temperature detection component 1 is arranged on the sample and is used to detect the temperature of the sample;
[0010] A second temperature detection component is arranged outside the current line and is used to detect the temperature of the current line;
[0011] The controller is connected to the temperature detection component 1, the temperature detection component 2 and the fluid circulation device respectively.
[0012] According to a current line temperature control device provided by the utility model, the middle part of the heat dissipation component is a cylindrical structure, which is sleeved outside the current line.
[0013] According to the current line temperature control device provided by the utility model, the outer wall side of the heat dissipation component forms a fin structure that diffuses outward.
[0014] According to a current line temperature control device provided by the utility model, a protective sleeve is provided on the outside of the fin structure; auxiliary limit plates are provided at both ends of the protective sleeve, and both ends of the current line pass through the auxiliary limit plates at both ends.
[0015] According to a current line temperature control device provided by the utility model, two ends of the current line are detachably connected to a sample and a test device respectively through connecting terminals.
[0016] According to a current line temperature control device provided by the utility model, the second temperature detection component is arranged at the connection end between the current line and the sample to be tested.
[0017] According to a current wire temperature control device provided by the utility model, the temperature detection component one and the temperature detection component two can transmit the temperature data of the current wire and the sample to be tested to the controller, and the controller can control the fluid temperature of the fluid circulation device until the temperature difference between the current wire and the test sample is 0°C.
[0018] According to a current line temperature control device provided by the utility model, the temperature detection component one and the temperature detection component two are temperature sensors.
[0019] According to an electric current line temperature control device provided by the utility model, the fluid circulation device is a water circulation device, and the water outlet and the water return port of the water circulation device are connected to the heat dissipation component through an output water pipe and a return water pipe respectively.
[0020] On the other hand, the utility model also provides a charging and discharging experimental equipment, including: the above-mentioned temperature control device.
[0021] The current wire temperature control device and charging and discharging experimental equipment provided by the utility model provide a heat dissipation component on the outside of the current wire, and transport a heat exchange medium to the heat dissipation component through a fluid circulation device to perform rapid heat exchange with the current wire, thereby achieving rapid heat conduction and heat dissipation, ensuring the temperature stability of the current wire, making the temperature difference between the current wire and the sample to be tested 0, preventing the current wire from releasing and conducting heat to the sample to be tested, thereby preventing the test result of the sample to be tested from deviating from the true result due to temperature factors, and ensuring the accuracy of the test result. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0023] Figure 1 This is one of the structural schematic diagrams of the current line temperature control device provided by the embodiment of the utility model;
[0024] Figure 2 This is the second structural schematic diagram of the current line temperature control device provided by the embodiment of the utility model;
[0025] Figure 3 It is a schematic diagram of the structure of the heat dissipation component provided by an embodiment of the utility model;
[0026] Figure 4 It is a schematic diagram of the structure of the current line provided by the embodiment of the utility model;
[0027] Figure 5 It is a structural schematic diagram of a protective sleeve provided in an embodiment of the utility model.
[0028] Reference numerals:
[0029] 1. Heat dissipation component; 10. Fin structure; 11. Protective sleeve; 12. Auxiliary limit plate; 2. Fluid circulation device; 20. Output water pipe; 21. Return water pipe; 3. Controller; 4. Current line; 40. Connection terminal. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] Combine the following Figure 1-Figure 5 The utility model describes a current line temperature control device and a charge and discharge experimental equipment.
[0032] like Figure 1 As shown, the current line temperature control device provided by the embodiment of the utility model includes a heat dissipation component 1, a fluid circulation device 2, a temperature detection component 1, a temperature detection component 2 and a controller 3, wherein:
[0033] The heat dissipation component 1 is sleeved on the outside of the current line 4 and is used for heat exchange with the current line 4; the heat dissipation component 1 has a fluid channel; the fluid circulation device 2 is connected to the heat dissipation component 1 through a pipeline and can supply heat exchange medium to the heat dissipation component; the temperature detection component 1 is set on the sample and is used to detect the temperature of the sample; the temperature detection component 2 is set on the outside of the current line 4 and is used to detect the temperature of the current line 4; the controller 3 is respectively connected to the temperature detection component 1, the temperature detection component 2 and the fluid circulation device 2.
[0034] Specifically, two ends of the current line 4 are used to connect to the connection ends of the charge and discharge test equipment and the sample to be tested.
[0035] It should be noted that the sample to be tested is a battery.
[0036] Specifically, the controller 3 is of the prior art, and may preferably be a controller 3 with a programming function, which is disposed inside the fluid circulation device 2 .
[0037] Specifically, the fluid circulation device 2 can be a water cooling device using water as a heat exchange medium, or an air cooling device using gas flow as a heat exchange medium.
[0038] Specifically, the fluid circulation device 2 is a prior art, and may preferably be a water circulation device, such as a water chiller device; the water outlet and water return port of the water chiller are connected to the heat dissipation component 1 through an output water pipe 20 and a return water pipe 21 respectively.
[0039] It should be noted that by arranging a heat dissipation component 1 on the outside of the current line 4 and conveying a heat exchange medium to the heat dissipation component 1 through the fluid circulation device 2, rapid heat exchange is performed with the current line 4, thereby achieving rapid heat conduction and heat dissipation, ensuring the temperature stability of the current line 4, and making the temperature difference between the current line 4 and the sample to be tested 0, thereby preventing the current line 4 from releasing and conducting heat to the sample to be tested, thereby preventing the test results of the sample to be tested from deviating from the true results due to temperature factors, thereby ensuring the accuracy of the test results.
[0040] In one embodiment of the above-mentioned current wire temperature control device, the middle portion of the heat dissipation component 1 is a cylindrical structure, which is sleeved outside the current wire 4.
[0041] like Figure 3 As shown, the outer wall side of the heat dissipation component 1 forms a fin structure 10 that spreads outward.
[0042] In the above scheme, by providing multiple fins, the heat dissipation area of the heat exchange medium is increased, thereby making the temperature rise and fall more sensitive, and further increasing the heat dissipation effect of the heat dissipation component 1, thereby ensuring that the heat of the current line 4 will not affect the sample to be tested.
[0043] like Figure 1 , Figure 5 As shown, in one embodiment of the above-mentioned current line temperature control device, a protective sleeve 11 is provided on the outside of the fin structure 10; auxiliary limiting plates 12 are provided at both ends of the protective sleeve 11, and both ends of the current line 4 pass through the auxiliary limiting plates 12 at both ends.
[0044] In the above scheme, the protective sleeve 11 can be used to protect the fin structure 10 to prevent the fin structure 10 from being damaged due to collision, thereby ensuring its service life; the auxiliary limiting plate 12 can also be used to clamp the current line 4 to achieve limiting and protection of the current line 4.
[0045] In one embodiment of the above-mentioned current line temperature control device, both ends of the current line 4 are detachably connected to the sample and the test equipment through connecting terminals, respectively. The sample can be a battery cell, and the test equipment can be a charge and discharge test equipment.
[0046] Specifically, the second temperature detection component is arranged at the connection end between the current line 4 and the sample to be tested.
[0047] like Figure 4 As shown, the connecting terminal 40 is connected to both ends of the current line 4, and an O-shaped terminal is set at the end. The same O-shaped terminal can be set at the connecting end of the battery cell and the test equipment. When the connecting ends are docked, they can be detachably connected by bolts.
[0048] In the above scheme, the detachable connection between the battery cell and the charge and discharge test equipment is achieved through the connection terminals, which can facilitate the rapid replacement of the connection with the sample to be tested and improve the test efficiency.
[0049] In one embodiment of the above-mentioned current wire temperature control device, temperature detection component 1 and temperature detection component 2 can transmit the temperature data of the current wire 4 and the sample to be tested to the controller 3, and the controller 3 can control the fluid temperature of the fluid circulation device until the temperature difference between the current wire 4 and the test sample is 0°C.
[0050] Specifically, the temperature detection component 1 and the temperature detection component 2 are temperature sensors.
[0051] In the above scheme, the controller 3 can collect and display temperature data in real time, and can also set the response time. The controller 3 controls the temperature of the constant temperature water output by the small water cooler according to the temperature difference between the two, so that the temperature difference between the two is 0. The function of real-time adjustment of automatic control can be realized, and the intelligent temperature control of the current line 4 can be realized, thereby improving the accuracy of temperature control. There is no need for manual control, which is more convenient and helps to reduce the engineering cost.
[0052] On the other hand, the utility model also provides a charging and discharging experimental equipment, including: the above-mentioned temperature control device
[0053] In the above scheme, since the charging and discharging experimental equipment is equipped with a current line temperature control device, it has all the advantages of the current line temperature control device.
[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0057] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A current line temperature control device, characterized in that: include: A heat dissipation component is sleeved on the outside of the current line and is used for heat exchange with the current line; the heat dissipation component has a fluid channel; A fluid circulation device, connected to the heat dissipation component through a pipeline, capable of supplying a heat exchange medium to the heat dissipation component; A temperature detection component 1 is arranged on the sample and is used to detect the temperature of the sample; A second temperature detection component is arranged outside the current line and is used to detect the temperature of the current line; The controller is connected to the temperature detection component 1, the temperature detection component 2 and the fluid circulation device respectively.
2. The current line temperature control device according to claim 1, characterized in that: The middle part of the heat dissipation component is a cylindrical structure, which is sleeved outside the current line.
3. The current line temperature control device according to claim 2, characterized in that: The outer wall side of the heat dissipation component forms a fin structure that spreads outward.
4. The current line temperature control device according to claim 3, characterized in that: The outer part of the fin structure is covered with a protective sleeve; auxiliary limiting plates are arranged at both ends of the protective sleeve, and both ends of the current line pass through the auxiliary limiting plates at both ends.
5. The current wire temperature control device according to any one of claims 1 to 4, characterized in that: The two ends of the current line are detachably connected to the sample and the test equipment respectively through connecting terminals.
6. The current line temperature control device according to claim 5, characterized in that: The second temperature detection component is arranged at the connection end between the current line and the sample to be tested.
7. The current line temperature control device according to claim 6, characterized in that: The temperature detection component 1 and the temperature detection component 2 can transmit the temperature data of the current wire and the sample to be tested to the controller, and the controller can control the fluid temperature of the fluid circulation device until the temperature difference between the current wire and the test sample is 0°C.
8. The current line temperature control device according to claim 7, characterized in that: The temperature detection component 1 and the temperature detection component 2 are temperature sensors.
9. The current line temperature control device according to claim 1, characterized in that: The fluid circulation device is a water circulation device, and the water outlet and the water return port of the water circulation device are connected to the heat dissipation component through an output water pipe and a return water pipe respectively.
10. A charging and discharging experimental equipment, characterized in that: The invention comprises a temperature control device as claimed in any one of claims 1 to 9.