CN111025158B - A fan heat dissipation button battery temperature control test device - Google Patents
A fan heat dissipation button battery temperature control test device Download PDFInfo
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- CN111025158B CN111025158B CN201911308935.5A CN201911308935A CN111025158B CN 111025158 B CN111025158 B CN 111025158B CN 201911308935 A CN201911308935 A CN 201911308935A CN 111025158 B CN111025158 B CN 111025158B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
一种风扇散热纽扣电池控温测试装置，包括温控器和温控腔室；温控腔室分为结构相同的正负极温控腔；温控腔的主体部分由外向内依次为正负极散热风扇、正负极风扇散热块、正负极制冷片和正负极蓄冷块；温控器包括制冷片控制模块，感温模块和散热监测模块；散热监测模块连接温控腔的正、负极散热风扇其供电；制冷片控制模块连接正、负极制冷片，通过变换电流方向控制正、负极制冷片工作为制冷模式或加热模式；当散热监测模块监测到风扇电流异常时，停止向制冷片供电；感温模块与正、负极温度传感器相连，并与制冷片控制模块通讯，对比测量的温度与设定值是否相同，进而控制模块启动或停止正、负极制冷片工作；本发明体积小、控温准确稳定。
A fan-heated button battery temperature control test device comprises a temperature controller and a temperature control chamber; the temperature control chamber is divided into positive and negative temperature control chambers with the same structure; the main part of the temperature control chamber is composed of positive and negative heat dissipation fans, positive and negative fan heat dissipation blocks, positive and negative refrigeration sheets and positive and negative cold storage blocks from the outside to the inside; the temperature controller comprises a refrigeration sheet control module, a temperature sensing module and a heat dissipation monitoring module; the heat dissipation monitoring module is connected to the positive and negative heat dissipation fans of the temperature control chamber and supplies power to them; the refrigeration sheet control module is connected to the positive and negative refrigeration sheets and controls the positive and negative refrigeration sheets to work in a cooling mode or a heating mode by changing the direction of the current; when the heat dissipation monitoring module detects that the fan current is abnormal, it stops supplying power to the refrigeration sheet; the temperature sensing module is connected to the positive and negative temperature sensors and communicates with the refrigeration sheet control module to compare whether the measured temperature is the same as the set value, and then the control module starts or stops the positive and negative refrigeration sheets; the present invention has a small size and accurate and stable temperature control.
Description
Technical Field
The invention relates to the technical field of battery testing, in particular to a fan heat dissipation button battery temperature control testing device.
Background
In the field of new energy which is rapidly developed, the lithium ion battery is a popular energy storage device from various secondary batteries due to the characteristic of high specific energy, and is widely applied to the aspects of electric vehicles, electric tools and power grid energy storage. Unfortunately, the electrode materials, electrolyte and separator that make up lithium ion batteries generally operate only within a relatively narrow temperature window beyond which severe damage can occur. For example, operating at lower temperatures, severe lithium precipitation of the negative electrode can occur, and the resulting lithium dendrites can puncture the separator, resulting in internal shorting; at high temperatures, the electrode material may undergo a phase change, the electrolyte may volatilize or oxidize, and the separator may fail. However, lithium ion batteries are required to be adaptable to a wide range of temperatures in applications. For example, in an electric vehicle in extremely cold regions, the battery needs to be able to maintain sufficient electric power at-20 ℃; and in tropical regions, or the heat generation of the battery itself in operation, the battery is required to be able to maintain normal operation at a temperature of +50℃. Therefore, the method has important practical significance for the temperature characteristic research of the lithium ion battery and the practical application of the lithium ion battery.
In a laboratory, the most commonly used mode for testing the performance of the lithium ion button battery is to test the lithium ion button battery by trial production, so that the process is simple, the cost is low, and the period is short. In the prior art, for the temperature test of button cells, the mode of putting the button cells into a large-scale constant temperature cavity is always adopted, the constant temperature cavity is cooled by a compressor and cold air, the price of the constant temperature cavity is high, the volume is huge, the temperature adjustment is slower, the use requirement is high, the test efficiency is lower, and inconvenience is brought to practical use. Therefore, the temperature test problem of the button cell is compared and studied, and the patent number CN105700587A belongs to the constant temperature cavity test type and cannot solve the existing problems through keyword retrieval; the lithium ion temperature control device shown in the patent CN103487761 is only a temperature sensing cavity of a lithium ion battery in practice, and cannot realize real-time temperature control; CN107887672 and CN206180060 are included as a control strategy for battery thermal management, and are not temperature control devices for button cells.
In the small-range temperature control, especially the small-range refrigeration, the semiconductor refrigeration sheet is a proper technical means, is also called a thermoelectric refrigeration sheet, is divided into a cold surface and a hot surface, can realize the temperature difference of about 40 ℃ on the two surfaces after being electrified, continuously generates the effect similar to heat transfer, changes the current direction, and can control the heating or refrigeration of one surface of the refrigeration sheet. For applications of semiconductor refrigeration sheets in related fields, such as CN106486719a, a power battery control system based on semiconductor refrigeration sheets is used, but not for button battery testing. CN203689188U is a refrigerating device for semiconductor devices, but does not need to energize semiconductor materials, and only needs to control the temperature of a single surface of a material to be tested, and cannot be used for testing button cells. The device described in CN106876824 is improved to a certain extent, but the device has complicated electrical test on the battery and is not easy to realize; the insulating layer provided may actually cause distortion in temperature measurement of the battery; the device has no heat preservation measure, so the temperature is difficult to reduce and maintain; and the cooling fin is not subjected to heat radiation protection, so that the damage is easy to occur, and the whole practicability of the device is not strong. Therefore, it is necessary to design a button cell testing device with high efficiency, small volume, wide temperature control range, accurate and stable temperature control, and simple and easy testing.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the temperature control testing device for the button battery with the fan heat dissipation, which has the characteristics of small volume, low cost, accurate and stable temperature control, wide temperature range, easy electrical test and high working stability, can keep the electrode shell of the button battery at 0-60 ℃ even wider temperature by utilizing the fan heat dissipation without other auxiliary equipment, and can realize larger temperature difference between the positive electrode shell and the negative electrode shell of the button battery.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
A fan radiating button battery temperature control testing device comprises a temperature controller 1 and a temperature control chamber; the temperature control chamber is divided into an anode temperature control chamber 2 and a cathode temperature control chamber 3 which have the same structure;
The main body part of the positive temperature control cavity 2 is provided with a positive cooling fan 2-1, a positive fan cooling block 2-2, a positive refrigerating plate 2-3 and a positive cold storage block 2-4 from outside to inside in sequence; the cold face of the positive electrode refrigerating sheet 2-3 is bonded with the positive electrode cold storage block 2-4 through heat conduction silicone grease, the hot face of the positive electrode refrigerating sheet 2-3 is bonded with the positive electrode fan radiating block 2-2 through heat conduction silicone grease, and a positive electrode temperature sensor 2-7 and a positive electrode electrical signal test point 2-8 are arranged on the side edge of the positive electrode cold storage block 2-4;
The main body part of the negative electrode temperature control cavity 3 is sequentially provided with a negative electrode cooling fan 3-1, a negative electrode fan cooling block 3-2, a negative electrode refrigerating plate 3-3 and a negative electrode cold storage block 3-4 from outside to inside; a negative electrode temperature sensor 3-7 and a negative electrode electrical signal test point 3-8 are arranged on the side edge of the negative electrode cold accumulation block 3-4;
the temperature controller 1 comprises a refrigerating sheet control module 1-1, a temperature sensing module 1-2 and a heat radiation monitoring module 1-3; the heat radiation monitoring module 1-3 is connected with pins of the positive and negative heat radiation fans 2-1 and 3-1 of the temperature control cavity to supply power to the heat radiation monitoring module and monitors current on the heat radiation fans;
the refrigerating sheet control module 1-1 is connected with pins of the positive and negative refrigerating sheets 2-3 and 3-3 of the temperature control cavity through control lines, and controls the positive and negative refrigerating sheets 2-3 and 3-3 to work in a refrigerating mode or a heating mode by changing the current direction;
the cooling fin control module 1-1 is communicated with the heat radiation monitoring module 1-3, and when the heat radiation monitoring module 1-3 monitors that the fan current is abnormal, the cooling fin control module 1-1 stops supplying power to the cooling fins 2-3, 3-3;
the acquisition line of the temperature sensing module 1-2 is connected with pins of the positive and negative electrode temperature sensors 2-7 and 3-7 of the temperature control cavity and is communicated with the refrigerating sheet control module 1-1, whether the measured temperature is the same as a set value is compared, and then the positive and negative electrode refrigerating sheets 2-3 and 3-3 are started or stopped to work by the control module 1-1.
The positive electrode cold accumulation blocks 2-4 are made of metal materials with good heat conductivity and electrical conductivity, including but not limited to copper and aluminum materials.
The surface of the positive electrode cold accumulation block 2-4 is provided with a 1mm concave, the surface of the negative electrode cold accumulation block 3-4 is provided with a 1mm convex, and button cells 4 to be tested with various sizes are arranged between the two cold accumulation blocks.
An insulating layer 5 is arranged between the positive electrode cold accumulation block 2-4 and the negative electrode cold accumulation block 3-4.
The outer layer of the main body part of the temperature control chamber is provided with positive and negative heat preservation layers 2-5 and 3-5.
The positive and negative heat preservation layers 2-5,3-5 are provided with positive and negative outer shell layers 2-6,3-6, and the positive and negative outer shell layers 2-6,3-6 are provided with mounting holes for the integral fixed mounting of the device.
The side length of the positive and negative electrode refrigerating sheets 2-3,3-3 is 4 cm, and the thickness is 5 mm.
The invention has the advantages that: the side length of the refrigerating sheet is only in the order of centimeters, the required cavity is very small, and the refrigerating sheet has the capacity of heating and refrigerating at the same time. The heat dissipation monitoring function that sets up can effectively protect the refrigeration piece, prevents overheated damage, and the security of device is higher, and the test is also more stable, uses radiator fan to dispel the heat and need not rely on other refrigeration annex, like circulating cooling water, compressor etc. can realize better control by temperature change effect.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic cross-sectional view of a temperature controlled chamber of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, a fan heat dissipation button cell temperature control testing device comprises a temperature controller 1 and a temperature control chamber.
Referring to fig. 2, the temperature control chamber is divided into a positive temperature control chamber 2 and a negative temperature control chamber 3 with the same structure.
The main body part of the positive temperature control cavity 2 is provided with a positive cooling fan 2-1, a positive fan cooling block 2-2, a positive refrigerating plate 2-3 and a positive cold storage block 2-4 from outside to inside in sequence; the cold face of the positive electrode refrigerating sheet 2-3 is adhered to the positive electrode cold storage block 2-4 through heat conduction silicone grease, the hot face of the positive electrode refrigerating sheet 2-3 is adhered to the positive electrode fan radiating block 2-2 through heat conduction silicone grease, the positive electrode fan radiating block 2-2 is externally provided with the positive electrode radiating fan 2-1, the radiating fan 2-1 and the fan radiating block 2-2 work together in such a way, heat of the hot face of the positive electrode refrigerating sheet 2-3 during working is taken away rapidly, and normal working of the positive electrode refrigerating sheet 2-3 is ensured. The side of the positive electrode cold accumulation block 2-4 is provided with a positive electrode temperature sensor 2-7 and a positive electrode electrical signal test point 2-8.
The structure of the negative electrode temperature control cavity 3 is the same as that of the positive electrode temperature control cavity 2, namely, a main body part is sequentially provided with a negative electrode cooling fan 3-1, a negative electrode fan cooling block 3-2, a negative electrode refrigerating plate 3-3 and a negative electrode cold storage block 3-4 from outside to inside; the side of the negative electrode cold accumulation block 3-4 is provided with a negative electrode temperature sensor 3-7 and a negative electrode electrical signal test point 3-8.
The temperature controller 1 comprises a refrigerating sheet control module 1-1, a temperature sensing module 1-2 and a heat radiation monitoring module 1-3; the heat radiation monitoring module 1-3 is connected with pins of the positive and negative heat radiation fans 2-1 and 3-1 of the temperature control cavity to supply power to the heat radiation monitoring module and monitors current on the heat radiation fans; the refrigerating sheet control module 1-1 is connected with pins of the positive and negative refrigerating sheets 2-3 and 3-3 of the temperature control cavity through control lines, and controls the positive and negative refrigerating sheets 2-3 and 3-3 to work in a refrigerating mode or a heating mode by changing the current direction; the cooling fin control module 1-1 is communicated with the heat radiation monitoring module 1-3, and when the heat radiation monitoring module 1-3 monitors that the fan current is abnormal, the cooling fin control module 1-1 stops supplying power to the cooling fins 2-3, 3-3; the acquisition line of the temperature sensing module 1-2 is connected with pins of the positive and negative electrode temperature sensors 2-7 and 3-7 of the temperature control cavity and is communicated with the refrigerating sheet control module 1-1, whether the measured temperature is the same as a set value or not is compared, and then the positive and negative electrode refrigerating sheets 2-3 and 3-3 are started or stopped to work by the control module 1-1; the positive electrode cold accumulation blocks 2-4 are made of metal materials with good heat conductivity and electrical conductivity, including but not limited to copper and aluminum materials. The positive electrode cold storage block 2-4 plays three roles, namely, the temperature of the cold surface of the positive electrode refrigerating sheet 2-3 is uniformly transmitted to the shell of the button cell 4 to be tested, so that the temperature distribution is more uniform and the temperature change is smoother; secondly, a temperature sensor 1-2 mounting port is preset on the positive electrode cold storage block 2-4, and the temperature of the positive electrode cold storage block 2-4 is consistent with the temperature of the shell of the button cell 4 to be measured, so that the temperature of the shell of the button cell 4 to be measured can be accurately measured by measuring the temperature of the positive electrode cold storage block 2-4; and thirdly, the test electrode serving as the button cell 4 to be tested has good electrical contact with the shell of the button cell 4 to be tested in a compacting manner, and an electrical signal test wire can be directly clamped on the positive electrode cold storage block 2-4.
The surface of the positive electrode cold accumulation block 2-4 is provided with a 1mm concave, the surface of the negative electrode cold accumulation block 3-4 is provided with a 1mm convex, and button cells 4 to be tested with various sizes are arranged between the two cold accumulation blocks.
An insulating layer 5 is arranged between the positive electrode cold accumulation block 2-4 and the negative electrode cold accumulation block 3-4, and the temperature of the positive electrode shell and the temperature of the negative electrode shell can be independently set.
The outer layer of the main body part of the temperature control chamber is provided with positive and negative heat preservation layers 2-5 and 3-5 for reducing heat transfer between the test chamber and the outside.
The positive and negative heat-insulating layers 2-5,3-5 are provided with positive and negative outer shell layers 2-6,3-6, and the positive and negative outer shell layers 2-6,3-6 are provided with mounting holes for the integral fixed mounting of the device.
The side length of the positive and negative electrode refrigerating sheets 2-3,3-3 is 4 cm, and the thickness is 5 mm.
The working principle of the invention is as follows:
when the button battery is used, the positive temperature control cavity 2 and the negative temperature control cavity 3 are opened, the positive electrode of the button battery 4 to be measured is attached to the concave platform of the positive cold storage block 2-4, then the negative temperature control cavity is covered on the positive electrode, the convex platform of the negative cold storage block 3-4 of the negative temperature control cavity is attached to the negative electrode of the battery, the upper fixing screw and the lower fixing screw are screwed, and the sponge foam type heat preservation layer 5 can be tightly pressed at different heights according to the thickness of the battery, so that the installation can be completed.
The temperature controller 1 is opened, the temperature value of the cold accumulation blocks of the positive electrode and the negative electrode is read, meanwhile, the heat dissipation monitoring 1-3 drives and monitors the work of the heat dissipation fans, when the positive electrode heat dissipation fan 2-1 and the negative electrode heat dissipation fan 3-1 work normally, the temperature value to be measured is set, the refrigerator control module 1-1 compares the set value with the actual value, and the positive electrode refrigeration sheet 2-3 and the negative electrode refrigeration sheet 3-3 are driven to be in a refrigeration mode or a heat dissipation mode. When the temperature in the temperature control cavity is stabilized near the set value, the battery test equipment can be used for measuring the electrical property of the lithium ion button battery 4 at the set temperature. Practical use proves that the device can stably realize a low-temperature test environment of 0 ℃ to a high-temperature test environment of 50 ℃ in the temperature control chamber when the external environment temperature of 20 ℃.
Claims (5)
1. The fan radiating button battery temperature control testing device is characterized by comprising a temperature controller (1) and a temperature control chamber; the temperature control chamber is divided into an anode temperature control chamber (2) and a cathode temperature control chamber (3) which have the same structure;
the main body part of the positive temperature control cavity (2) is sequentially provided with a positive cooling fan (2-1), a positive fan cooling block (2-2), a positive refrigerating sheet (2-3) and a positive cold storage block (2-4) from outside to inside; the cold face of the positive electrode refrigerating sheet (2-3) is bonded with the positive electrode cold storage block (2-4) through heat conduction silicone grease, the hot face of the positive electrode refrigerating sheet (2-3) is bonded with the positive electrode fan radiating block (2-2) through heat conduction silicone grease, and a positive electrode temperature sensor (2-7) and a positive electrode electrical signal test point (2-8) are arranged on the side edge of the positive electrode cold storage block (2-4);
The main body part of the negative electrode temperature control cavity (3) is sequentially provided with a negative electrode cooling fan (3-1), a negative electrode fan cooling block (3-2), a negative electrode refrigerating sheet (3-3) and a negative electrode cold storage block (3-4) from outside to inside; a negative electrode temperature sensor (3-7) and a negative electrode electrical signal test point (3-8) are arranged on the side edge of the negative electrode cold accumulation block (3-4);
The temperature controller (1) comprises a refrigerating sheet control module (1-1), a temperature sensing module (1-2) and a heat radiation monitoring module (1-3); the heat radiation monitoring module (1-3) is connected with pins of the positive and negative heat radiation fans (2-1, 3-1) of the temperature control cavity to supply power to the heat radiation monitoring module and monitors current on the heat radiation fans;
The refrigerating sheet control module (1-1) is connected with pins of the positive and negative refrigerating sheets (2-3, 3-3) of the temperature control cavity through a control line, and controls the positive and negative refrigerating sheets (2-3, 3-3) to work in a refrigerating mode or a heating mode by changing the current direction;
The cooling fin control module (1-1) is communicated with the heat radiation monitoring module (1-3), and when the heat radiation monitoring module (1-3) monitors that the fan current is abnormal, the cooling fin control module (1-1) stops supplying power to the cooling fins (2-3, 3-3);
The acquisition line of the temperature sensing module (1-2) is connected with pins of the positive and negative electrode temperature sensors (2-7, 3-7) of the temperature control cavity and is communicated with the refrigerating sheet control module (1-1), whether the measured temperature is the same as a set value or not is compared, and then the positive and negative electrode refrigerating sheets (2-3, 3-3) are started or stopped to work by the control module (1-1);
The surface of the positive electrode cold accumulation block (2-4) is provided with a 1mm recess, the surface of the negative electrode cold accumulation block (3-4) is provided with a 1mm projection, and button cells (4) with various sizes to be tested are arranged between the two cold accumulation blocks;
an insulating layer (5) is arranged between the positive electrode cold accumulation block (2-4) and the negative electrode cold accumulation block (3-4).
2. The device for testing the temperature control of the fan cooling button battery according to claim 1, wherein the positive electrode cold accumulation block (2-4) is made of a metal material with good heat conductivity and electrical conductivity, including but not limited to copper and aluminum materials.
3. The device for testing the temperature control of the fan radiating button battery according to claim 1, wherein the positive heat preservation layer (2-5, 3-5) and the negative heat preservation layer (3-5) are arranged on the outer layer of the main body part of the temperature control chamber.
4. A fan heat dissipation button cell temperature control testing device according to claim 3, wherein positive and negative outer shell layers (2-6, 3-6) are arranged outside the positive and negative heat preservation layers (2-5, 3-5), and mounting holes are arranged on the positive and negative outer shell layers (2-6, 3-6) for the integral fixed mounting of the device.
5. The device for testing the temperature control of the fan radiating button cell according to claim 1, wherein the side length of the positive and negative electrode refrigerating sheets (2-3, 3-3) is 4 cm, and the thickness is 5 mm.
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| CN212008861U (en) * | 2019-12-18 | 2020-11-24 | 西安交通大学 | Temperature control testing device for button battery with fan heat dissipation function |
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| US9304170B2 (en) * | 2008-03-24 | 2016-04-05 | Bosch Automotive Service Solutions Inc. | Modular heavy load battery test system |
| US8828570B2 (en) * | 2011-06-29 | 2014-09-09 | Hewlett-Packard Development Company, L.P. | Battery temperature sensor |
| CN104503508B (en) * | 2014-12-18 | 2016-08-24 | 上海市计量测试技术研究院 | A kind of solar cell testboard temperature control system and temp. control method |
| CN205809259U (en) * | 2016-05-17 | 2016-12-14 | 厦门高容新能源科技有限公司 | A kind of lithium ion battery charge-discharge test thermostat |
| CN105977574A (en) * | 2016-06-30 | 2016-09-28 | 深圳市元征科技股份有限公司 | Battery temperature control method and system |
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