CN111624501A - Constant temperature box for constant temperature charging and discharging test of power battery - Google Patents
Constant temperature box for constant temperature charging and discharging test of power battery Download PDFInfo
- Publication number
- CN111624501A CN111624501A CN201910146249.6A CN201910146249A CN111624501A CN 111624501 A CN111624501 A CN 111624501A CN 201910146249 A CN201910146249 A CN 201910146249A CN 111624501 A CN111624501 A CN 111624501A
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- box body
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- fan
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- 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
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
-
- 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
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/303—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature using a sensing element having a resistance varying with temperature, e.g. thermistor
- G05D23/306—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature using a sensing element having a resistance varying with temperature, e.g. thermistor using semiconductor devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention belongs to the field of batteries, and relates to a constant temperature box for constant temperature charging and discharging tests of power batteries, which comprises a box body, a through hole arranged on the box body and a power supply outside the box body, and is characterized in that: the upper cover plate and the box body can be connected in a pressing mode, the upper cover plate is provided with a glass window, and the box body is internally provided with a PTC heating plate, a thermoelectric semiconductor refrigerator and two fans; the thermoelectric semiconductor refrigerator consists of two semiconductor refrigeration pieces, a condensing plate, a heat conducting plate and two radiating fins, wherein the first semiconductor refrigeration piece is respectively connected with the heat conducting plate and one radiating fin, the second refrigeration piece is respectively connected with the condensing plate and the other radiating fin, the outer side of the box body is provided with a temperature controller, and the temperature controller is respectively connected with a thermocouple, a PTC heating plate, the thermoelectric semiconductor refrigerator, two fans and a power supply; the box body is a double-layer box body or a multi-layer box body with an interlayer. The device provided by the invention can control the temperature of circulating airflow, avoid the influence caused by large-amplitude direct rising and direct falling of the temperature, and has the advantages of simple operation and high safety.
Description
Technical Field
The invention belongs to the technical field of battery equipment, and particularly relates to a constant temperature box for constant temperature charging and discharging tests of a power battery.
Background
Because the temperature has a large influence on the performance of the battery, the constant temperature test of the battery is mostly required to be carried out for accurately testing the performance of various batteries. However, the power battery can generate a large amount of heat rapidly in the charging and discharging process, so that the surface temperature is rapidly increased, the accuracy of the constant-temperature charging and discharging test result of the battery is affected, and particularly when the charging and discharging current is large, if the charging and discharging current is not corrected, the fluctuation of the test data is large, the accuracy of the measurement result is difficult to judge, and the test data is invalid.
There are two solutions in the current art: firstly, a charge and discharge test instrument is placed in a thermostatic chamber, the temperature of the thermostatic chamber is adjusted through an air conditioner, the energy consumption of the scheme is high, the cost for performing ultra-high temperature and ultra-low temperature tests is high, the implementation difficulty is high, and the surface temperature of the battery cannot be guaranteed to be constant through experimental verification; secondly, a high-precision thermostat is adopted to control the test system at a constant temperature, but the thermostat is high in price and large in size, the constant temperature of the surface of the battery in the charging and discharging process cannot be guaranteed for a large-capacity battery, and the temperature rise is different from a few degrees centigrade to dozens of degrees centigrade. The cost of the two schemes is very high, and the requirement of constant temperature test on the surface of the battery is difficult to meet.
Chinese patent CN200920096931.0 the constant temperature device for testing lithium iron phosphate material adopts the heating wire as the heat source, only has the heating function, and the heating wire is easy to burn red, and the surface temperature is too high, which may lead to safety accident, and when the temperature is too high, the air conditioner is needed to cool the environment, and the temperature control range is narrow. The constant temperature device for the battery charge and discharge test, disclosed in chinese patent CN201220169797.4, adopts a thermoelectric semiconductor refrigeration assembly as a heat source and a cold source, so that two effects of refrigeration and heating can be achieved, the temperature of a box body is controlled within a range of-20 to 80 ℃, but a reverse voltage cannot be instantly applied when a refrigeration sheet is working, and only 5 minutes is needed, that is, the refrigeration cannot be instantly converted into heating or from heating into refrigeration, so that an error in temperature control is large; the refrigerating sheet is used for temperature difference refrigeration, the temperature of the cold end is required to be low enough during heating, the heating rate is low, the heat source and the cold source are arranged on the side of the box body, temperature steps can be generated on the upper portion and the lower portion of the box body, in addition, the heat generation quantity of the battery is large and fast during heavy current charging and discharging, the temperature of the space of the box body is controlled by the method, and therefore the surface temperature of the battery cannot be constant.
Disclosure of Invention
In order to solve the technical problems, the invention provides a thermostat for constant-temperature charging and discharging tests of a power battery, which can control the temperature of circulating air flow and can avoid the influence caused by great temperature rise and drop.
The technical scheme of the invention is as follows:
a thermostat for constant-temperature charging and discharging tests of power batteries comprises a box body (8), a through hole arranged on the box body and a power supply (7) outside the box body, wherein an upper cover plate can be connected with the box body (8) in a pressing mode, the upper cover plate is provided with a glass window (1), and a PTC heating plate (4), a thermoelectric semiconductor refrigerator and two fans (6) are arranged in the box body (8); the thermoelectric semiconductor refrigerator is composed of two semiconductor refrigeration pieces (10), a condensing plate (2), a heat conducting plate (9) and two radiating fins (11), wherein the first semiconductor refrigeration piece is respectively connected with the heat conducting plate (9) and one radiating fin (11), the second refrigeration piece is respectively connected with the condensing plate (2) and the other radiating fin (11), a temperature controller (3) is arranged outside the box body, and the temperature controller (3) is respectively connected with a thermocouple, a PTC heating plate (4), the thermoelectric semiconductor refrigerator, two fans (6) and a power supply (7); the box body is a double-layer box body or a multi-layer box body with an interlayer, the interlayer space forms a refrigeration channel, the first semiconductor refrigeration piece and the heat conducting plate (9) are arranged in the refrigeration channel, and the radiating fin connected with the first semiconductor refrigeration piece is arranged outside the box body; the second semiconductor refrigeration piece and the condensation plate (2) are arranged at the center of the middle lower part of the inner layer of the box body, the radiating fin connected with the second semiconductor refrigeration piece is arranged outside the bottom of the box body, and the battery can be placed on the condensation plate (2); the first fan (6) is arranged at the front end of the inner layer of the box body, the second fan (6) is arranged at the rear end of the inner layer of the box body, hot air can enter a refrigeration channel through the first fan (6), and is cooled by the heat conduction plate (9) and then is guided into the inner layer of the box body through the second fan (6).
Further, the heat-conducting plate (9) is a multi-layer porous heat-conducting plate.
Furthermore, the through holes are formed in the bottom or the top of the two sides of the box body, and the thermocouple and the battery charge and discharge test line can penetrate through the through holes; the PTC heating plate (4) is arranged on the inner layer of the box body.
Furthermore, the power supply is an alternating current power supply or a direct current constant voltage power supply; the fan (6) is an alternating current heat radiation fan or a direct current heat radiation fan.
Further, the material of the box body layer is one or more of a ceramic fiber board, a polyimide board, a polyether-ether-ketone board, a polyurethane board and an epoxy resin glass fiber board.
Furthermore, a relay (5) is arranged outside the box body, and the temperature controller (3) is connected with the relay (5).
Further, the temperature controller (3) is connected with the semiconductor refrigeration piece. The temperature controller can be connected with the condensation plate.
Wherein, the thermoelectric semiconductor refrigerator is used as a refrigerating element, the PTC heating plate is used as a heating element, the PTC heating plate (4) is a positive temperature coefficient thermistor, and the PTC heating plates with different powers can be designed between 12V and 380V according to requirements.
The invention has the beneficial effects that:
1. the temperature regulation of the invention can be mainly carried out by internal circulating air flow, the influence caused by the vertical rising and the vertical falling of the temperature is avoided, the operation is simple, and the safety is high.
2. The invention can control the surface temperature of the test battery at-30 to 100 ℃ by changing the quantity and power of the PTC heating sheets and the thermoelectric semiconductor cooler and setting the set temperature of the temperature controller, and meanwhile, the fan enables the temperature distribution to be more uniform, and the temperature control precision is controlled at high precision of +/-1 ℃.
Drawings
FIG. 1 is a schematic cross-sectional view of the apparatus of the present invention;
fig. 2 is a schematic diagram of the hot and cold air switching in the cooling tunnel in view a-a of fig. 1 (without upper cover plate, relay, through hole, power cell).
Wherein, 1: glass window, 2: condensation plate, 3: temperature controller, 4: PTC heating plate, 5: a relay, 6: fan, 7: power supply, 8: a box body, 9: heat-conducting plate, 10: semiconductor refrigeration piece, 11: and a heat sink.
Detailed Description
The invention is described below with reference to fig. 1-2.
As shown in fig. 1-2, the incubator for constant temperature charging and discharging test of the power battery comprises a box body (8), a through hole arranged on the box body and a power supply (7) outside the box body, wherein an upper cover plate can be connected with the box body (8) in a pressing manner, the upper cover plate is provided with a glass window (1), and a PTC heating plate (4), a thermoelectric semiconductor refrigerator and two fans (6) are arranged in the box body (8); the thermoelectric semiconductor refrigerator is composed of two semiconductor refrigeration pieces (10), a condensing plate (2), a heat conducting plate (9) and two radiating fins (11), wherein the first semiconductor refrigeration piece is respectively connected with the heat conducting plate (9) and one radiating fin (11), the second refrigeration piece is respectively connected with the condensing plate (2) and the other radiating fin (11), a temperature controller (3) is arranged outside the box body, and the temperature controller (3) is respectively connected with a thermocouple, a PTC heating plate (4), the thermoelectric semiconductor refrigerator, two fans (6) and a power supply (7); the box body is a double-layer box body or a multi-layer box body with an interlayer, the interlayer space forms a refrigeration channel, the first semiconductor refrigeration piece and the heat conducting plate (9) are arranged in the refrigeration channel, and the radiating fin connected with the first semiconductor refrigeration piece is arranged outside the box body; the second semiconductor refrigeration piece and the condensation plate (2) are arranged at the center of the middle lower part of the inner layer of the box body, the radiating fin connected with the second semiconductor refrigeration piece is arranged outside the bottom of the box body, and the battery can be placed on the condensation plate (2); the first fan (6) is arranged on the bottom side of the front end of the inner layer of the box body, the second fan (6) is arranged on the bottom side of the rear end of the inner layer of the box body, and hot air can enter the refrigeration channel through the first fan (6), is cooled by the heat conduction plate (9), and then is guided into the inner layer of the box body through the second fan (6).
Wherein the heat conducting plate (9) is a multi-layer porous heat conducting plate. The relay (5) is arranged outside the box body, and the temperature controller (3) is connected with the relay (5) and used for controlling refrigeration and heating conversion. Multiple layers of porous heat-conducting plates and fins can be provided at the bottom and/or sides of the box. The through-hole sets up in box both sides bottom or top, and thermocouple and battery charge and discharge test wire can pass the through-hole, and the thermocouple can be placed in relevant position, like on the battery, battery charge and discharge test wire can link to each other with the battery.
The temperature controller (3) is connected with the thermoelectric semiconductor refrigerator, particularly, the temperature controller (3) is respectively connected with the first semiconductor refrigerating piece and the second semiconductor refrigerating piece and is connected with the condensing plate through the second semiconductor refrigerating piece. The battery is placed on the condensation plate and the PTC heating plate is arranged on the inner layer of the box body.
Wherein, the thermoelectric semiconductor refrigerator is used as a refrigerating element, the PTC heating plate is used as a heating element, the PTC heating plate (4) is a positive temperature coefficient thermistor, and the PTC heating plates with different powers can be designed between 12V and 380V according to requirements. The thermocouple is a K-type thermocouple (not shown in the figure), one end of the K-type thermocouple is connected to the temperature controller, and the other end of the K-type thermocouple penetrates through the through hole of the box body and is arranged on the battery to be measured. The connecting wire all can penetrate the box inlayer through the through-hole to avoid putting into the box to electrical apparatus such as test instrument, and then the volume of increase box.
Furthermore, the power supply is an alternating current power supply or a direct current constant voltage power supply, the power supply is a thermoelectric semiconductor refrigerator, a temperature controller, a PTC heating plate, a relay, a fan and a battery, and the surface temperature of the battery to be tested can be controlled to be-30-100 ℃ by changing the number and power of the PTC heating plates and the thermoelectric semiconductor refrigerator (2) and setting the set temperature of the temperature controller. (ii) a The fan is an alternating current heat dissipation fan with 20-240V and 50/60 Hz. The material of the box body layer is one or more of a ceramic fiber board, a polyimide board, a polyether-ether-ketone board, a polyurethane board and an epoxy resin glass fiber board.
The working process is as follows: in the use process, the upper cover plate is opened firstly, the battery is fixed on the condensing plate, then the upper cover plate is covered, the testing temperature is set for preheating or precooling, the battery is subjected to charge and discharge testing after the temperature displayed by the temperature controller reaches the set temperature, in the testing process, the fan is started, the deviation range of the set temperature is +/-1 ℃, the temperature reaches the upper line or the lower limit, the semiconductor refrigerator and the PTC heating plate can be automatically controlled to work in a hot alternating mode, and the temperature difference is guaranteed to be within +/-1 ℃.
It should be understood that the above is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all the modifications of the equivalent structure or equivalent flow path, the shape of the refrigeration channel or the modified structure, or the direct or indirect application to other related technical fields, which are made by the contents of the present specification and the accompanying drawings, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a thermostated container that power battery constant temperature charge-discharge test was used, includes box (8), the through-hole that sets up on the box and the outer power supply (7) of box, its characterized in that: the upper cover plate and the box body (8) can be connected in a pressing mode, the upper cover plate is provided with a glass window (1), and a PTC heating plate (4), a thermoelectric semiconductor refrigerator and two fans (6) are arranged in the box body (8); the thermoelectric semiconductor refrigerator is composed of two semiconductor refrigeration pieces (10), a condensing plate (2), a heat conducting plate (9) and two radiating fins (11), wherein the first semiconductor refrigeration piece is respectively connected with the heat conducting plate (9) and one radiating fin (11), the second refrigeration piece is respectively connected with the condensing plate (2) and the other radiating fin (11), a temperature controller (3) is arranged outside the box body, and the temperature controller (3) is respectively connected with a thermocouple, a PTC heating plate (4), the thermoelectric semiconductor refrigerator, two fans (6) and a power supply (7); the box body is a double-layer box body or a multi-layer box body with an interlayer, the interlayer space forms a refrigeration channel, the first semiconductor refrigeration piece and the heat conducting plate (9) are arranged in the refrigeration channel, and the radiating fin connected with the first semiconductor refrigeration piece is arranged outside the box body; the second semiconductor refrigeration piece and the condensation plate (2) are arranged at the center of the middle lower part of the inner layer of the box body, the radiating fin connected with the second semiconductor refrigeration piece is arranged outside the bottom of the box body, and the battery can be placed on the condensation plate (2); the first fan (6) is arranged at the front end of the inner layer of the box body, the second fan (6) is arranged at the rear end of the inner layer of the box body, hot air can enter a refrigeration channel through the first fan (6), and is cooled by the heat conduction plate (9) and then is guided into the inner layer of the box body through the second fan (6).
2. The incubator according to claim 1, wherein the incubator comprises: the heat conducting plate (9) is a multi-layer porous heat conducting plate.
3. The incubator according to claim 1, wherein the incubator comprises: the through holes are formed in the bottom or the top of the two sides of the box body, and the thermocouple and the battery charging and discharging test wire can penetrate through the through holes; the PTC heating plate (4) is arranged on the inner layer of the box body.
4. The incubator according to claim 1, wherein the incubator comprises: the power supply is an alternating current power supply or a direct current constant voltage power supply; the fan (6) is an alternating current heat radiation fan or a direct current heat radiation fan.
5. The incubator according to claim 1, wherein the incubator comprises: the material of the box body layer is one or more of a ceramic fiber board, a polyimide board, a polyether-ether-ketone board, a polyurethane board and an epoxy resin glass fiber board.
6. The incubator according to claim 1, wherein the incubator comprises: a relay (5) is arranged outside the box body, and the temperature controller (3) is connected with the relay (5).
7. The incubator according to claim 1, wherein the incubator comprises: the temperature controller (3) is connected with the semiconductor refrigerating sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146249.6A CN111624501A (en) | 2019-02-27 | 2019-02-27 | Constant temperature box for constant temperature charging and discharging test of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146249.6A CN111624501A (en) | 2019-02-27 | 2019-02-27 | Constant temperature box for constant temperature charging and discharging test of power battery |
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| Publication Number | Publication Date |
|---|---|
| CN111624501A true CN111624501A (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910146249.6A Pending CN111624501A (en) | 2019-02-27 | 2019-02-27 | Constant temperature box for constant temperature charging and discharging test of power battery |
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| CN (1) | CN111624501A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646660A (en) * | 2022-03-08 | 2022-06-21 | 大连海事大学 | Temperature self-adaptive pulsating heat pipe experimental device with variable liquid filling rate, adjusting method and testing method |
| TWI779622B (en) * | 2021-05-21 | 2022-10-01 | 謝德風 | Test device for pre-burning and pre-cooling |
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| CN206046053U (en) * | 2016-08-30 | 2017-03-29 | 上海汉测试验设备有限公司 | Walk-in type constant temperature humidity chamber |
| CN207978229U (en) * | 2018-01-16 | 2018-10-16 | 贵州师范学院 | A kind of novel big data storage server cabinet |
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2019
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Patent Citations (9)
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| CN201246832Y (en) * | 2007-11-06 | 2009-05-27 | 扬正智权有限公司 | Solar refrigeration auxiliary air conditioner device for automobile |
| CN201425618Y (en) * | 2009-06-01 | 2010-03-17 | 天津量诺科技发展有限公司 | Thermostat used for testing lithium iron phosphate material |
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| CN103941778A (en) * | 2014-03-26 | 2014-07-23 | 太仓微芯电子科技有限公司 | Temperature control system and method for miniature constant-temperature box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI779622B (en) * | 2021-05-21 | 2022-10-01 | 謝德風 | Test device for pre-burning and pre-cooling |
| CN114646660A (en) * | 2022-03-08 | 2022-06-21 | 大连海事大学 | Temperature self-adaptive pulsating heat pipe experimental device with variable liquid filling rate, adjusting method and testing method |
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Application publication date: 20200904 |
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| RJ01 | Rejection of invention patent application after publication |