CN212008861U - Temperature control testing device for button battery with fan heat dissipation function - Google Patents
Temperature control testing device for button battery with fan heat dissipation function Download PDFInfo
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- CN212008861U CN212008861U CN201922281194.8U CN201922281194U CN212008861U CN 212008861 U CN212008861 U CN 212008861U CN 201922281194 U CN201922281194 U CN 201922281194U CN 212008861 U CN212008861 U CN 212008861U
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Abstract
The temperature control testing device of the fan heat dissipation button battery comprises a temperature controller and a temperature control chamber; the temperature control cavity is divided into a positive temperature control cavity and a negative temperature control cavity with the same structure; the main body part of the temperature control cavity is sequentially provided with a positive and negative radiating fan, a positive and negative fan radiating block, a positive and negative refrigerating sheet and a positive and negative cold storage block from outside to inside; the temperature controller comprises a refrigerating sheet control module, a temperature sensing module and a heat dissipation monitoring module; the heat dissipation monitoring module is connected with the positive and negative heat dissipation fans of the temperature control cavity for supplying power; the refrigerating piece control module is connected with the positive and negative refrigerating pieces and controls the positive and negative refrigerating pieces to work as a refrigerating mode or a heating mode by changing the current direction; when the heat dissipation monitoring module monitors that the fan current is abnormal, the power supply to the refrigerating sheet is stopped; the temperature sensing module is connected with the positive and negative electrode temperature sensors and is communicated with the refrigerating sheet control module, and the temperature sensing module compares whether the measured temperature is the same as a set value or not so as to control the module to start or stop the positive and negative electrode refrigerating sheets; the utility model discloses small, the accurate stability of accuse temperature.
Description
Technical Field
The utility model relates to a battery test technical field especially relates to fan heat dissipation button cell accuse temperature testing arrangement.
Background
In the rapidly developing new energy field, lithium ion batteries are distinguished from various secondary batteries due to the characteristic of high specific energy, become a hot energy storage device, and are widely applied to electric vehicles, electric tools and power grid energy storage. The united states is that the electrode materials, electrolyte and separator that make up a lithium ion battery can generally only operate over a narrow temperature window, beyond which serious damage can occur. For example, at lower temperatures, the negative electrode can undergo severe lithium precipitation, and the resulting lithium dendrites can puncture the separator, causing internal short circuits; at high temperatures, the electrode material may undergo a phase change, the electrolyte may volatilize or oxidize, and the separator may fail. Lithium ion batteries need to be able to accommodate a wide range of temperatures in an application. For example, in an electric vehicle in an extremely cold region, the battery needs to be able to maintain sufficient electric quantity at-20 ℃; in tropical regions, or the heat generated during the operation of the battery itself, 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 common way for testing the performance of the lithium battery is to test the lithium ion button battery, so that the process is simple, the cost is low, and the period is short. Among the current technical scheme, to button cell's temperature test, adopt the mode of putting into large-scale thermostatic chamber with button cell to go on always, thermostatic chamber uses compressor and cold wind to cool down usually, thermostatic chamber's price is high, bulky, adjust the temperature slower, operation requirement height, leads to the efficiency of test lower, brings inconvenience for the in-service use. Therefore, the temperature test problem of the button cell is compared and researched, and through keyword retrieval, the patents listed in the patent number CN105700587A belong to the constant temperature cavity test type, so that the existing problems cannot be solved; the lithium ion temperature control device shown in patent CN103487761 is actually only a temperature sensing chamber of a lithium ion battery, and cannot realize real-time temperature control; CN107887672 and CN206180060 contain contents, which are a control strategy for battery thermal management, and are not temperature control devices for button cells.
In the temperature control of a small range, particularly in the refrigeration of the small range, a semiconductor refrigeration piece is a suitable technical means, the semiconductor refrigeration piece is also called a thermoelectric refrigeration piece and is divided into a cold side and a hot side, the temperature difference of about 40 ℃ can be realized on the two sides after the semiconductor refrigeration piece is electrified, the effect similar to heat transportation is generated by continuously electrifying, the current direction is changed, and one side of the refrigeration piece can be controlled to heat or refrigerate. For the application of the semiconductor refrigeration piece in the related field, such as CN106486719A, the power battery control system is based on the semiconductor refrigeration piece, but is not used for button battery testing. CN203689188U is a refrigerating device for semiconductor devices, but does not need to electrify semiconductor materials, 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 some extent, but the electrical test of the device on the battery is complicated and is not easy to implement; the provision of an insulating layer may actually result in distortion of the temperature measurement of the battery; the device has no heat preservation measures, so the temperature is difficult to reduce and maintain; and the refrigeration piece is not protected by heat dissipation, and is easy to damage, so that the whole practicability of the device is not strong. Therefore, it is necessary to design a button cell testing device with high efficiency, small size, 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 utility model aims to provide a fan heat dissipation button cell accuse temperature testing arrangement has characteristics small, with low costs, accuse temperature is accurate and stable, temperature range is wide, electricity test is easy, job stabilization nature is high, utilizes the fan heat dissipation, does not need other attached equipment can make button cell electrode shell keep at 0 ℃ -60 ℃ temperature more wide range even to can realize great temperature difference at button cell's positive and negative electrode shell.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the temperature control testing device of the fan heat dissipation button battery comprises a temperature controller 1 and a temperature control chamber; the temperature control chamber is divided into a positive temperature control cavity 2 and a negative temperature control cavity 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 surface of the positive refrigeration piece 2-3 is bonded with the positive cold storage block 2-4 through heat conduction silicone grease, the hot surface of the positive refrigeration piece 2-3 is bonded with the positive fan radiating block 2-2 through heat conduction silicone grease, and a positive temperature sensor 2-7 and a positive electrical signal test point 2-8 are arranged on the side edge of the positive cold storage block 2-4;
the main body part of the negative temperature control body cavity 3 is sequentially provided with a negative heat radiation fan 3-1, a negative fan heat radiation block 3-2, a negative refrigeration piece 3-3 and a negative cold storage block 3-4 from outside to inside; a negative temperature sensor 3-7 and a negative electrical signal test point 3-8 are arranged on the side edge of the negative cold storage block 3-4;
the temperature controller 1 comprises a refrigerating sheet control module 1-1, a temperature sensing module 1-2 and a heat dissipation monitoring module 1-3; the heat dissipation monitoring module 1-3 is connected with pins of positive and negative heat dissipation fans 2-1, 3-1 of the temperature control cavity to supply power to the temperature control cavity and monitor the current on the heat dissipation fans;
the refrigerating piece control module 1-1 is connected with the pins 2-3 and 3-3 of the positive and negative refrigerating pieces of the temperature control cavity through a control line, and controls the positive and negative refrigerating pieces 2-3 and 3-3 to work in a refrigerating mode or a heating mode by changing the current direction;
the refrigerating sheet control module 1-1 is communicated with the heat dissipation monitoring module 1-3, and when the heat dissipation monitoring module 1-3 monitors that the fan current is abnormal, the refrigerating sheet control module 1-1 stops supplying power to the refrigerating sheets 2-3 and 3-3;
the acquisition line of the temperature sensing module 1-2 is connected with pins of positive and negative temperature sensors 2-7, 3-7 of the temperature control cavity, and is communicated with the refrigerating sheet control module 1-1, and the measured temperature is compared with a set value to judge whether the measured temperature is the same or not, so that the control module 1-1 starts or stops the positive and negative refrigerating sheets 2-3, 3-3 to work.
The positive cold storage blocks 2-4 are made of metal materials with good heat conductivity and electric conductivity, including but not limited to copper and aluminum materials.
The surface of the positive pole cold storage block 2-4 is provided with a 1mm depression, the surface of the negative pole cold storage block 3-4 is provided with a protrusion with the diameter of about 1mm, and button batteries 4 to be tested with various sizes are arranged between the two cold storage blocks.
And a heat preservation layer 5 is also arranged between the positive pole cold storage blocks 2-4 and the negative pole cold storage blocks 3-4.
The outer layer of the main body part of the temperature control chamber is provided with a positive insulating layer 2-5 and a negative insulating layer 3-5.
The positive and negative outer shell layers 2-6, 3-6 are arranged outside the positive and negative heat insulation layers 2-5, 3-5, and mounting holes are arranged on the positive and negative outer shell layers 2-6, 3-6 for fixing and mounting the whole device.
The side length of the positive and negative refrigeration pieces 2-3 and 3-3 is 4 cm, and the thickness is 5 mm.
The utility model has the advantages that: the length of a side of refrigeration piece is only for centimetre magnitude, and the cavity of needs is very little, and has heating and refrigerated ability simultaneously, the utility model discloses the testing arrangement of using the refrigeration piece design contrasts with traditional lithium ion cell testing arrangement, and its small in size, efficient, accuse temperature are more accurate and easily realize. The cooling piece can effectively be protected to the heat dissipation monitoring function that sets up, prevents overheated damage, and the security of device is higher, and the test is also more stable, uses radiator fan heat dissipation need not rely on other refrigeration annexes, like recirculated cooling water, compressor etc. can realize better control by temperature change effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic sectional view of the temperature control chamber of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the temperature control testing device for the fan heat dissipation button cell 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 having 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 surface of the positive refrigeration piece 2-3 is bonded with the positive cold storage block 2-4 through heat conduction silicone grease, the hot surface of the positive refrigeration piece 2-3 is bonded with the positive fan radiating block 2-2 through heat conduction silicone grease, and the positive radiating fan 2-1 is arranged outside the positive fan radiating block 2-2, so that the radiating fan 2-1 and the fan radiating block 2-2 work together to quickly take away heat on the hot surface when the positive refrigeration piece 2-3 works, and the positive refrigeration piece 2-3 is ensured to work normally. And a positive temperature sensor 2-7 and a positive electrical signal test point 2-8 are arranged on the side edge of the positive cold storage block 2-4.
The structure of the negative temperature control cavity 3 is the same as that of the positive temperature control cavity 2, namely a main body part comprises a negative heat radiation fan 3-1, a negative fan heat radiation block 3-2, a negative refrigeration sheet 3-3 and a negative cold storage block 3-4 in sequence from outside to inside; and a negative temperature sensor 3-7 and a negative electrical signal test point 3-8 are arranged on the side edge of the negative cold storage block 3-4.
The temperature controller 1 comprises a refrigerating sheet control module 1-1, a temperature sensing module 1-2 and a heat dissipation monitoring module 1-3; the heat dissipation monitoring module 1-3 is connected with pins of positive and negative heat dissipation fans 2-1, 3-1 of the temperature control cavity to supply power to the temperature control cavity and monitor the current on the heat dissipation fans; the refrigerating piece control module 1-1 is connected with the pins 2-3 and 3-3 of the positive and negative refrigerating pieces of the temperature control cavity through a control line, and controls the positive and negative refrigerating pieces 2-3 and 3-3 to work in a refrigerating mode or a heating mode by changing the current direction; the refrigerating sheet control module 1-1 is communicated with the heat dissipation monitoring module 1-3, and when the heat dissipation monitoring module 1-3 monitors that the fan current is abnormal, the refrigerating sheet control module 1-1 stops supplying power to the refrigerating sheets 2-3 and 3-3; an acquisition line of the temperature sensing module 1-2 is connected with pins of 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, and the measured temperature is compared with a set value to judge whether the measured temperature is the same as the set value, so that the control module 1-1 starts or stops the positive and negative electrode refrigerating sheets 2-3, 3-3 to work; the positive cold storage blocks 2-4 are made of metal materials with good heat conductivity and electric conductivity, including but not limited to copper and aluminum materials. The positive cold storage blocks 2-4 play three roles, one of which is to uniformly conduct the temperature of the cold surface of the positive refrigeration piece 2-3 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 pole cold storage block 2-4, and the temperature of the shell of the button cell 4 to be measured can be accurately measured by measuring the temperature of the positive pole cold storage block 2-4 because the temperature of the positive pole cold storage block 2-4 is consistent with that of the shell of the button cell 4 to be measured; and thirdly, the test electrode is used as a test electrode of the button cell 4 to be tested, the test electrode is in good electrical contact with the shell of the button cell 4 to be tested in a pressing mode, and an electric signal test line can be directly clamped on the positive cold storage block 2-4.
The surface of the positive pole cold storage block 2-4 is provided with a 1mm depression, the surface of the negative pole cold storage block 3-4 is provided with a protrusion with the diameter of about 1mm, and button batteries 4 to be tested with various sizes are arranged between the two cold storage blocks.
An insulating layer 5 is arranged between the anode cold storage blocks 2-4 and the cathode cold storage blocks 3-4, and the temperature of the anode and cathode shells can be set independently.
The outer layer of the main body part of the temperature control chamber is provided with a positive insulating layer 2-5 and a negative insulating layer 3-5 which are used for reducing the heat transfer between the test cavity and the outside.
The positive and negative outer shells 2-6, 3-6 are arranged outside the positive and negative heat-insulating layers 2-5, 3-5, and mounting holes are arranged on the positive and negative outer shells 2-6, 3-6 for fixing and mounting the whole device.
The side length of the positive and negative refrigeration pieces 2-3 and 3-3 is 4 cm, and the thickness is 5 mm.
The utility model discloses a theory of operation:
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 tested is attached to the concave platform of the positive cold storage block 2-4, the negative temperature control cavity is covered on the positive temperature control cavity, 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 compressed to different heights according to the thickness of the battery, so that the button battery can be installed.
The temperature controller 1 is started, the temperature values of the cold storage blocks of the positive electrode and the negative electrode are read, meanwhile, the heat dissipation monitor 1-3 drives and monitors the operation of the cooling fan, when the positive cooling fan 2-1 and the negative cooling 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 cooling piece 2-3 and the negative cooling piece 3-3 are driven to be in a cooling mode or a heat dissipation mode. When the temperature in the temperature control cavity is stabilized near a set value, the electrical performance of the lithium ion button battery 4 at the set temperature can be measured by using battery testing equipment. 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 at the external environment temperature of 20 ℃.
Claims (7)
1. The temperature control testing device for the fan heat dissipation button battery is characterized by comprising a temperature controller (1) and a temperature control chamber; the temperature control chamber is divided into a positive temperature control cavity (2) and a negative temperature control cavity (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 surface of the positive refrigeration piece (2-3) is bonded with the positive cold storage block (2-4) through heat conduction silicone grease, the hot surface of the positive refrigeration piece (2-3) is bonded with the positive fan radiating block (2-2) through heat conduction silicone grease, and a positive temperature sensor (2-7) and a positive electrical signal test point (2-8) are arranged on the side edge of the positive cold storage block (2-4);
the main body part of the negative temperature control cavity (3) is sequentially provided with a negative heat radiation fan (3-1), a negative fan heat radiation block (3-2), a negative refrigeration sheet (3-3) and a negative cold storage block (3-4) from outside to inside; a negative temperature sensor (3-7) and a negative electrical signal test point (3-8) are arranged on the side of the negative cold storage block (3-4);
the temperature controller (1) comprises a refrigerating sheet control module (1-1), a temperature sensing module (1-2) and a heat dissipation monitoring module (1-3); the heat dissipation monitoring module (1-3) is connected with pins of a positive heat dissipation fan (2-1) and a negative heat dissipation fan (3-1) of the temperature control cavity to supply power to the temperature control cavity, and monitors the current on the heat dissipation fans;
the refrigerating piece control module (1-1) is connected with a positive refrigerating piece (2-3) and a negative refrigerating piece (3-3) pin of the temperature control cavity through control lines, and controls the positive refrigerating piece (2-3) and the negative refrigerating piece (3-3) to work in a refrigerating mode or a heating mode by changing the current direction;
the refrigerating piece control module (1-1) is communicated with the heat dissipation monitoring module (1-3), and when the heat dissipation monitoring module (1-3) monitors that the fan current is abnormal, the refrigerating piece control module (1-1) stops supplying power to the positive refrigerating piece (2-3) and the negative refrigerating piece (3-3);
an acquisition line of the temperature sensing module (1-2) is connected with pins of positive and negative 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 control module (1-1) starts or stops the positive refrigerating sheet (2-3) and the negative refrigerating sheet (3-3) to work.
2. The temperature control testing device for the button battery with the fan heat dissipation function as claimed in claim 1, wherein the positive cold storage block (2-4) is made of a metal material with good heat conductivity and electric conductivity, including but not limited to copper and aluminum.
3. The temperature control testing device for the button battery with the fan heat dissipation function according to claim 1, wherein the surface of the positive cold storage block (2-4) is provided with a 1mm depression, the surface of the negative cold storage block (3-4) is provided with a 1mm protrusion, and the button batteries (4) to be tested with various sizes are arranged between the two cold storage blocks.
4. The temperature control testing device for the button battery with the fan heat dissipation function according to claim 1, wherein an insulating layer (5) is further arranged between the positive pole cold storage blocks (2-4) and the negative pole cold storage blocks (3-4).
5. The temperature control testing device for the button battery with the fan heat dissipation function according to claim 1, wherein a positive heat insulation layer (2-5) and a negative heat insulation layer (3-5) are arranged on the outer layer of the main body part of the temperature control chamber.
6. The temperature control testing device for the button battery with the fan heat dissipation function according to claim 5, wherein a positive shell layer (2-6) and a negative shell layer (3-6) are arranged outside the positive heat insulation layer (2-5) and the negative heat insulation layer (3-5), and mounting holes are formed in the positive shell layer (2-6) and the negative shell layer (3-6) and used for fixedly mounting the whole device.
7. The temperature control testing device for the button battery with the fan heat dissipation function according to claim 1, wherein the side length of the positive refrigeration piece (2-3) and the side length of the negative refrigeration piece (3-3) are 4 cm, and the thickness of the positive refrigeration piece and the negative refrigeration piece is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281194.8U CN212008861U (en) | 2019-12-18 | 2019-12-18 | Temperature control testing device for button battery with fan heat dissipation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281194.8U CN212008861U (en) | 2019-12-18 | 2019-12-18 | Temperature control testing device for button battery with fan heat dissipation function |
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| Publication Number | Publication Date |
|---|---|
| CN212008861U true CN212008861U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922281194.8U Active CN212008861U (en) | 2019-12-18 | 2019-12-18 | Temperature control testing device for button battery with fan heat dissipation function |
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| CN (1) | CN212008861U (en) |
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- 2019-12-18 CN CN201922281194.8U patent/CN212008861U/en active Active
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