CN106990268B - Electrochemical comprehensive tester - Google Patents

Abstract

The application discloses an electrochemical comprehensive tester, which comprises a constant temperature box body with an opening at one end and an electrochemical comprehensive tester body which is connected with the constant temperature box body and is used for carrying out the chemical volumetric process treatment and/or the electrochemical performance test on a battery or a capacitor to be tested at the set temperature of the constant temperature box body, wherein the electrochemical comprehensive tester body comprises a shell, a battery detection circuit arranged in the shell and a fixing clamp which is electrically connected with the battery detection circuit and extends out of the shell and is used for installing the battery or the capacitor to be tested, and the opening end of the constant temperature box body is connected with the shell to form a closed cavity and the fixing clamp is accommodated in the closed cavity. The electrochemical comprehensive tester provided by the application has low running cost; the closed space is small, and the temperature control precision is high; the adjustable temperature range is wide; the constant temperature box body occupies small space, can adopt a plurality of test instruments to test the electrochemical performance of a plurality of groups of batteries or capacitors to be tested at different temperatures, and is flexible and convenient to use.

Description

Electrochemical comprehensive tester

Technical field

The present invention relates to the field of electrochemical comprehensive testing instruments, and in particular, to an electrochemical comprehensive testing instrument.

Background technique

The electrochemical comprehensive tester is an indispensable instrument for the research and production of batteries or capacitors. It is mainly used at a set constant temperature (generally between -40 degrees to 70 degrees, in most cases at normal temperature). 25 degrees) for the batteries to be tested (such as button batteries, cylindrical batteries and prismatic batteries, etc.) or capacitors to perform processes such as volumetric formation and electrochemical performance testing. Currently, no electrochemical comprehensive tester on the market has its own constant temperature device. When the battery or capacitor to be tested is subjected to a capacitive conversion process or electrochemical performance test, a constant temperature chamber is formed with the help of indoor air conditioning, and then placed The battery or capacitor to be tested is tested in a constant temperature chamber. As shown in FIG. 1 , one or more electrochemical comprehensive testers 100 are installed on the same test stand 200 to test the battery or capacitor to be tested. There are many disadvantages to this approach:

1. High electricity cost - in a constant temperature room, the air conditioner needs to be turned on 24 hours a day until the test is completed, and battery testing basically lasts from a few days to dozens of days, or even more than a few months. In actual production, due to the Each battery or capacitor needs to undergo capacity separation and formation processes. In fact, the air conditioner in the constant temperature room runs continuously, resulting in very high electricity costs;

2. Low temperature control accuracy - the constant temperature room has a large space. When the temperature in the constant temperature room is controlled by air conditioning, the temperature accuracy is low, and the performance of the battery or capacitor is very sensitive to temperature, so this method will be used to control the temperature of the battery or capacitor to be tested. The performance of the capacitor has a greater impact;

3. Narrow adjustable temperature range - the temperature range that air conditioners can regulate is generally between 20-30 degrees. When testing batteries or capacitors, it is often necessary to test batteries or capacitors at low temperatures (-40-0 degrees) and high temperatures ( The electrochemical performance at 45-70 degrees) needs to be achieved with the help of a special large-scale high and low temperature box. The external dimensions of this special high and low temperature box are generally more than 100×100×100cm, and the interior can be used to store batteries or The space for the capacitor is very small. In addition, based on the temperature control accuracy requirement, the test wire outlet cannot be too large. Therefore, generally a high and low temperature chamber can only be connected to about 10 test wires for testing about 10 batteries or capacitors. , causing a lot of space waste and inconvenience;

4. Insufficient flexibility - when multiple instruments work in the same constant temperature room, they can only measure the electrochemical performance of the battery or capacitor under test at one set temperature at the same time. If it is necessary to measure the battery under test at another temperature at the same time, Or the electrochemical performance of the capacitor needs to be carried out in another constant temperature room, which is very uneconomical and inconvenient.

Therefore, the existing method of testing batteries or capacitors under test in a constant temperature chamber has high electricity costs, low temperature control accuracy and insufficient flexibility, which is a technical problem that needs to be solved urgently.

Contents of the invention

The invention provides an electrochemical comprehensive tester to solve the technical problems of high electricity cost, low temperature control accuracy and insufficient flexibility in the existing method of testing batteries or capacitors under test in a constant temperature chamber.

The technical solutions adopted by the present invention are as follows:

The invention provides an electrochemical comprehensive tester, which includes a constant temperature box with an opening at one end and is connected to the constant temperature box for performing chemical composition and capacitance process and/or electrical conduction on the battery or capacitor to be tested at the set temperature of the constant temperature box. An electrochemical comprehensive tester body for chemical performance testing. The electrochemical comprehensive tester body includes a casing, a battery detection circuit located in the casing, and a battery detection circuit electrically connected to the battery detection circuit and extending out of the casing for installing the battery or capacitor to be tested. The fixed clamp is connected to the open end of the thermostatic box and the shell to form a closed cavity, and the fixed clamp is accommodated in the closed cavity.

Further, the number of fixed clamps is multiple. The outer surface of the shell is correspondingly provided with a sealing end face for sealing the open end of the thermostatic box. The plurality of fixing clamps are evenly arranged on the sealing end face, and the corresponding sealing end faces are provided in the closed cavity. In multiple constant temperature isolation cavities that separate multiple fixing clips.

Further, a plurality of partitions are provided in the closed cavity, and the plurality of constant temperature isolation chambers are separated by a plurality of partitions. The plurality of constant temperature isolation chambers are respectively provided with constant temperature adjustment devices for independent temperature adjustment.

Further, the constant temperature adjustment device includes a temperature sensor, a refrigeration system and a heating system. The electrochemical comprehensive tester also includes a temperature control system connected to the constant temperature adjustment device. The temperature control system is set on the constant temperature box or the electrochemical comprehensive tester body. ,in,

Temperature sensor, used to detect the temperature in the thermostatic box;

The temperature control system is connected to the temperature sensor, refrigeration system and heating system. It is used to control the cooling of the refrigeration system or the heating of the heating system to keep the temperature in the thermostatic box within the set temperature; it is also used to receive signals from external devices. temperature adjustment instructions, and according to the temperature adjustment instructions, the temperature in the thermostatic box is kept constant within the set temperature.

Further, the refrigeration system is a thermoelectric refrigerator. The thermoelectric refrigerator includes a refrigeration fin, a radiator, a first cooling fan, a thermal insulation gasket and a cooling block. The thermal insulation gasket is surrounded by the refrigeration fin and is located on the radiator and Between the cooling blocks, a first cooling fan is installed on the other end of the radiator, and the thermostatic box is provided with a heat dissipation port corresponding to the first cooling fan.

Further, the heating system is a metal PTC heating plate or a ceramic PTC heating sheet.

Further, the fixing clips used to fix the battery or capacitor are alligator clips and/or thimble-type fixing parts.

Further, the electrochemical comprehensive tester also includes an air induction duct, and the electrochemical comprehensive tester body also includes a second cooling fan for dissipating heat to the electrochemical comprehensive tester body. The second cooling fan is correspondingly provided on the casing. The thermostatic box is equipped with a matching air outlet and an air inlet communicating with the air outlet. The two ends of the air induction pipe are connected to the air outlet and the air inlet respectively.

Further, the electrochemical comprehensive tester also includes a fixing piece. Fixing parts corresponding to the open end of the thermostatic box are extended on both sides of the sealing end face. The opening end and the fixing part are locked by the fixing piece.

Further, the battery detection circuit includes a battery internal resistance test circuit, a battery charge and discharge test circuit, a battery capacity test circuit, a battery voltage test circuit, a battery current test circuit, a battery energy and power test circuit, a capacitance test circuit, and a battery temperature test circuit. One or more of the thermostat temperature control circuits. The electrochemical comprehensive tester body also includes a circuit board. The battery detection circuit and the temperature control system are integrated on the circuit board.

Further, the electrochemical comprehensive tester also includes a test rack. The test rack is provided with multiple installation brackets for installing multiple electrochemical comprehensive tester bodies. The multiple electrochemical comprehensive tester bodies are correspondingly plugged into multiple installation brackets. On the bracket and fixedly connected with the thermostatic box.

The invention has the following beneficial effects:

The electrochemical comprehensive tester provided by the present invention is connected to the shell of the electrochemical comprehensive tester body through a constant temperature box with an opening at one end to form a closed cavity, and in the closed cavity, the battery to be tested at a set temperature is tested. Or the capacitor is subjected to capacitance composition process and/or electrochemical performance testing. The electrochemical comprehensive tester provided by the invention only needs to add a constant temperature box, and has low operating costs; it has a small closed space and high temperature control accuracy; it can be adjusted in a wide temperature range from -40 degrees to 70 degrees, and is adjustable It has a wide temperature range; the constant temperature box occupies a small space, and multiple testing instruments can be used to test the electrochemical performance of multiple groups of batteries or capacitors to be tested at different temperatures at the same time. It is flexible and convenient to use.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.

Description of the drawings

The drawings forming a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 is a schematic structural diagram of a preferred embodiment of an electrochemical comprehensive tester in the prior art;

Figure 2 is a schematic structural diagram of the first preferred embodiment of the electrochemical comprehensive tester of the present invention;

Figure 3 is a schematic structural diagram of the first preferred embodiment of the electrochemical comprehensive tester body in Figure 2;

Figure 4 is a schematic structural diagram of a preferred embodiment of the constant temperature box in Figure 2;

Figure 5 is a system control block diagram of the electrochemical comprehensive tester of the present invention;

Figure 6 is a schematic structural diagram of the second preferred embodiment of the electrochemical comprehensive tester of the present invention;

Figure 7 is a schematic structural diagram of a preferred embodiment of the refrigeration system in Figure 5;

Figure 8 is a schematic structural diagram of the first preferred embodiment of the electrochemical comprehensive tester body in Figure 2.

Explanation of reference numbers:

10. Electrochemical comprehensive tester body; 20. Constant temperature box; 11. Shell; 12. Battery detection circuit; 13. Fixed clamp; 111. Sealing end face; 24. Partition plate; 21. Temperature sensor; 22. Refrigeration System; 23. Heating system; 221. Refrigeration fin; 222. Radiator; 223. First cooling fan; 224. Cooling block; 14. Second cooling fan; 30. Air induction duct; 40. Temperature control system.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to Figures 2 and 3, a preferred embodiment of the present invention provides an electrochemical comprehensive tester, which includes a thermostatic box 20 with an open end and is connected to the thermostatic box 20 for testing at a set temperature of the thermostatic box 20. The electrochemical comprehensive tester body 10 is used to perform chemical composition and capacitance processing and/or electrochemical performance testing on the battery or capacitor to be tested. The electrochemical comprehensive tester body 10 includes a housing 11 and a battery detection circuit 12 located in the housing 11 , and a fixing clip 13 that is electrically connected to the battery detection circuit 12 and extends out of the housing 11 for installing the battery or capacitor to be tested. The open end of the thermostatic box 20 is connected to the housing 11 to form a closed cavity and is fixed The clamp 13 is accommodated in the closed cavity. In this embodiment, the fixing clip 13 may be an alligator clip or a thimble-type fixing member. The fixing clip 13 can be used to install various batteries or capacitors, such as batteries, finished batteries, mobile phone batteries, notebook batteries, power batteries, supercapacitors, etc. The battery detection circuit 12 can be a battery internal resistance test circuit, a battery charge and discharge test circuit, a battery capacity test circuit, a battery voltage test circuit, a battery current test circuit, a battery energy and power test circuit, a capacitance test circuit, a battery temperature test circuit, a constant temperature One or more of the box temperature control circuits allow the electrochemical comprehensive tester to detect the internal resistance, charge and discharge capacity, voltage, current, energy, power, temperature and recording time of the battery or capacitor under test.

The electrochemical comprehensive tester provided in this embodiment is connected to the shell of the electrochemical comprehensive tester body through a constant temperature box with an opening at one end to form a closed cavity, and in the closed cavity, the test object to be measured at a set temperature is Batteries or capacitors are analyzed for composition, capacitance and/or electrochemical performance testing. Compared with the existing technology, the electrochemical comprehensive tester provided by this embodiment does not require air conditioning and a constant temperature chamber. It only needs to add a constant temperature box with one end open, which has low operating costs; the closed space of the cavity is enclosed in the constant temperature box. Small, which makes the temperature control accuracy high and the reliability of the electrical performance test of the battery or capacitor under test is greatly improved; according to specific needs, it can be adjusted between -40 degrees to 70 degrees, or even a wider temperature range. The adjustable temperature range is wide and does not require the use of a special large high and low temperature box; the constant temperature box takes up little space, and multiple testing instruments can be used in the same room to test multiple groups of batteries or capacitors under test at different temperatures at the same time. Electrochemical performance testing, flexible and convenient to use.

Preferably, as shown in FIG. 3 , in the electrochemical comprehensive tester provided by this embodiment, the number of fixed clamps 13 is multiple, and the outer surface of the housing 11 is correspondingly provided with a seal for sealing the open end of the thermostatic box 20 On the end face 111, a plurality of fixing clips 13 are evenly arranged on the sealing end face 111. The plurality of fixing clips 13 can be evenly distributed on the sealing end face 111 laterally or vertically. A plurality of constant temperature isolation cavities for separating a plurality of fixing clips 13 are correspondingly provided in the closed cavity, wherein the temperatures in the multiple constant temperature isolation cavities can be adjusted independently. In this implementation, one constant temperature isolation cavity can be used to correspond to one fixed clamp 13, or one constant temperature isolation cavity can be used to correspond to multiple fixing clamps 13. There is no limitation here, and both are within the scope of protection of this patent.

The electrochemical comprehensive tester provided in this embodiment is provided with a plurality of independent temperature-adjustable constant temperature isolation cavities for separating multiple fixed clamps 13 in a closed cavity, so that each to be installed on the fixed clamps can The temperature of the battery or capacitor under test can be adjusted individually. Only one electrochemical comprehensive tester can be used to test the electrochemical performance of multiple batteries or capacitors under test at different temperatures. It has wide versatility and is more flexible and convenient to use.

Specifically, as shown in Figure 4, in the electrochemical comprehensive tester provided by this embodiment, a plurality of partitions 24 are provided in a closed cavity. The partitions are mainly used for temperature and thermal insulation. The partitions are made of thermal insulation materials. The closed cavity is divided into multiple constant temperature isolation chambers by multiple partitions 24. The multiple constant temperature isolation chambers are separated by multiple partitions 24. Each of the multiple constant temperature isolation chambers is provided with a constant temperature adjustment device for independent temperature adjustment. . In this embodiment, a constant temperature adjustment device is separately provided in each constant temperature isolation chamber. The cross-sectional shape of the constant temperature isolation cavity can be square, rectangular, circular or polygonal, etc. Optionally, each partition 24 is provided with a first solenoid valve for communicating with adjacent constant temperature isolation chambers. The electrochemical comprehensive tester also includes a temperature control system. The temperature control system is connected to the constant temperature in each constant temperature isolation chamber. The adjusting device is connected to the first solenoid valve, and is used to open the valve in any one of the two constant temperature isolation chambers when the temperature requirements of the batteries or capacitors to be measured in two adjacent constant temperature isolation chambers are the same. By using the thermostatic adjustment device and opening the first solenoid valve on the corresponding partition 24, the temperatures in the two thermostatic isolation chambers can be adjusted within the set temperature. In this embodiment, by controlling the opening or closing of the first solenoid valve, the temperature in each thermostatic isolation chamber can be controlled collectively or individually, thereby providing greater control flexibility and correspondingly saving electric energy.

The electrochemical comprehensive tester provided in this embodiment uses multiple partitions to separate the closed cavity into multiple constant temperature isolation chambers for independent testing of the batteries or capacitors to be tested, so that one electrochemical comprehensive tester can test simultaneously. The electrochemical performance test of multiple batteries or capacitors under test at different temperatures has wide versatility, more flexible and convenient use, and saves costs.

Further, please refer to Figure 5. In the electrochemical comprehensive tester provided in this embodiment, the constant temperature adjustment device includes a temperature sensor 21, a refrigeration system 22 and a heating system 23. The electrochemical comprehensive tester also includes a temperature sensor connected to the constant temperature adjustment device. The control system 40 and the temperature control system 40 can be installed on the constant temperature box 20 or on the main body 10 of the electrochemical comprehensive tester. The temperature control system 40 can control the thermostat to adjust the temperature through a wired connection, or can control the thermostat to adjust the temperature through a wireless connection. Among them, the temperature sensor 21 is used to detect the temperature in the constant temperature box 20; the temperature control system 40 is connected to the temperature sensor 21, the refrigeration system 22 and the heating system 23, and is used to control the refrigeration system 22 or the heating system 23. Heat is used to keep the temperature in the thermostatic box 20 constant within the set temperature. For example, when the temperature control system 40 receives a control instruction to raise the temperature, it turns off the refrigeration system 22, turns on the heating system 23, and raises the temperature to a set temperature range; when the temperature control system 40 receives a control instruction to lower the temperature. Afterwards, the heating system 23 is turned off, the refrigeration system 22 is turned on, and the temperature is reduced to a set temperature range. The temperature control system 40 is also used to receive temperature adjustment instructions sent from external devices, and to keep the temperature in the thermostatic box 20 within a set temperature according to the temperature adjustment instructions. External devices can be computers, mobile phones, remote controls, etc. The electrochemical comprehensive tester body 10 also includes a circuit board, on which the battery detection circuit 12 and the temperature control system 40 are integrated. Specifically, the refrigeration system 22 may adopt compression refrigeration, magnetic refrigeration, thermoelectric refrigeration, vapor absorption refrigeration, steam injection refrigeration, adsorption refrigeration, vortex tube refrigeration, air expansion refrigeration, adiabatic exhaust refrigeration, electrochemical refrigeration, and other refrigeration methods. The heating system 23 can use electric heating, oil heating, heat pump heating or infrared heating. In addition, the heat generated by the electrochemical comprehensive tester itself can be used to heat the thermostatic box. Energy saving.

The electrochemical comprehensive tester provided in this embodiment is equipped with constant temperature adjustment devices for independent temperature adjustment in multiple constant temperature isolation chambers. The constant temperature adjustment device uses a temperature sensor, a refrigeration system and a heating system to control the temperature in the constant temperature isolation chamber. The battery or capacitor to be tested is tested for electrochemical performance. It has wide versatility and is more flexible and convenient to use.

Specifically, as shown in Figure 7, in the electrochemical comprehensive tester provided by this embodiment, the refrigeration system 22 adopts a thermoelectric refrigerator. The thermoelectric refrigerator includes a refrigeration plate 221, a radiator 222, a first cooling fan 223, and a heat insulation gasket. and the cooling block 224. The thermal insulation pad is surrounded by the refrigeration block 221 and is located between the radiator 222 and the cooling block 224. The first cooling fan 223 is installed on the other end of the radiator 222. The thermostatic box 20 A heat dissipation port corresponding to the first heat dissipation fan 223 is provided on the upper body. Among them, in this embodiment, the refrigeration piece 221 is a semiconductor refrigeration piece. The size of the radiator 222 is 60*50mm. The size of the cooling block 224 is 20*15*5mm. Specifically, the heating system 23 is a metal PTC heating plate or a ceramic PTC heating sheet. In this implementation, the size of the metal PTC heating plate is 40*30mm. The ceramic PTC heating piece uses a low-voltage (12V or 24V) low-power heating piece. The size of the ceramic PTC heating piece is 50*40mm.

The working principle of the thermoelectric refrigerator in the electrochemical comprehensive tester provided in this embodiment is as follows:

By loading a DC power supply on the thermoelectric refrigerator, the electrons in the semiconductor material of the refrigeration piece 221 are caused to move. At the cold end of the refrigeration piece 221, heat is absorbed by the electrons, and these electrons move to the other end of the semiconductor material of the refrigeration piece 221. , that is, the hot end. Since the hot end of the refrigeration piece 221 is connected to the radiator 222, the heat is transferred from the semiconductor material body of the refrigeration piece 221 to the radiator 222, and then the heat is dissipated in the form of hot air through the first cooling fan 223. The cold air generated at the cold end of the refrigeration piece 221 is exported through the cooling block 224 and correspondingly transported to the constant temperature isolation cavity. The cold air and heat generated at both ends of the refrigeration fin 221 are separated by a heat insulation gasket disposed between the cooling block 224 and the radiator 222 and surrounding the refrigeration fin 221 .

With the electrochemical comprehensive tester provided in this embodiment, the steps for making a thermoelectric refrigerator include:

Step S100: Apply silica gel on the surface of the cooling chip.

Step S200: Paste the refrigeration sheet 221 coated with silicone on the radiator.

Step S300: Tear off the centrifugal paper of the heat insulation gasket and stick it on the periphery of the refrigeration chip.

Step S400: Connect the cooling block 224 to the other end of the cooling plate 221.

Step S500: Install a first cooling fan on the other end of the radiator.

The thermoelectric refrigerator in the electrochemical comprehensive tester provided in this embodiment has small overall size, strong flexibility, simple and convenient assembly, and high temperature controllability accuracy.

Preferably, please refer to Figure 6. The electrochemical comprehensive tester provided in this embodiment also includes an air induction duct 30. The electrochemical comprehensive tester body 10 also includes a second heat dissipation device for dissipating heat to the electrochemical comprehensive tester body 10. The cooling fan 14 has an air outlet corresponding to the second cooling fan 14 on the housing 11. The thermostatic box 20 is provided with an air inlet communicating with the air outlet. The two ends of the air induction pipe 30 are connected to the outlet respectively. The air vents and air inlets are used to introduce the heat generated by the electrochemical comprehensive tester body 10 into the constant temperature box 20 . In this embodiment, the electrochemical comprehensive tester also includes a second solenoid valve arranged on the air induction pipe 30. The temperature control system 40 is electrically connected to the second solenoid valve. When the refrigeration system 22 receives the temperature rise control command, Then open the second solenoid valve to introduce the heat generated by the electrochemical comprehensive tester body 10 into the constant temperature box 20. At the same time, the refrigeration system 22 is closed, the heating system 23 is opened, and the temperature is raised to the set temperature. Within the range; when the temperature control system 40 receives the cooling control command, the second solenoid valve is closed, the heat generated by the electrochemical comprehensive tester body 10 is directly exported to the air through the air outlet, and the heating system 23 is closed at the same time. , turn on the refrigeration system 22, and reduce the temperature to a set temperature range. Wherein, preferably, there are multiple air induction ducts 30 for introducing the heat generated by the electrochemical comprehensive tester body 10 into each constant temperature isolation cavity in the constant temperature box 20 . Each air induction duct 30 is provided with a second solenoid valve for conducting or closing the air induction duct 30 . When a certain constant temperature isolation chamber needs to be heated, the temperature control system 40 controls the opening of the second solenoid valve on the air induction pipe 30 corresponding to the constant temperature isolation chamber, so that the temperature generated by the electrochemical comprehensive tester body 10 can be Heat is introduced into the constant temperature isolation chamber.

The electrochemical comprehensive tester provided in this embodiment introduces the heat generated by the electrochemical comprehensive tester body into the constant temperature box through the air duct, thereby comprehensively utilizing the heat and correspondingly saving electric energy.

Further, please refer to Figure 8. In the electrochemical comprehensive tester provided in this embodiment, the electrochemical comprehensive tester body 10 is fixedly connected to the constant temperature box 20. Specifically, the electrochemical comprehensive tester also includes a fixing part and a sealing end face 111. Fixed portions 1111 corresponding to the open ends of the thermostatic box 20 are extended on both sides of the thermostatic box 20, and the open ends and the fixed portions 1111 are locked through fixing pieces. The fixing parts can be bolts or screws, etc.

Preferably, the electrochemical comprehensive tester provided in this embodiment also includes a test rack. The test rack is provided with a plurality of mounting brackets for installing multiple electrochemical comprehensive tester bodies 10. The multiple electrochemical comprehensive tester bodies are correspondingly provided. 10 is correspondingly plugged into multiple installation brackets and fixedly connected with the thermostatic box 20 . Specifically, the test rack is also provided with a sealing plate that is on the same plane as the shell 11 on the electrochemical comprehensive tester body 10 inserted into the thermostatic box 20. The shell 11 on the electrochemical comprehensive tester body 10 is in line with the The sealing plate forms a sealed integral outer wall, and the integral outer wall is fixedly connected to the open end of the thermostatic box 20 to form a closed cavity. In this embodiment, when using, you only need to insert multiple electrochemical comprehensive tester bodies 10 into the installation bracket and connect them to the thermostatic box 20, and then one thermostatic box 20 can control multiple electrochemical comprehensive tester bodies at the same time. 10, thus achieving the effect of overall constant temperature control, with simple structure and easy installation.

Further, the electrochemical comprehensive tester provided in this embodiment is provided with a heat insulation pad at the connection point between the constant temperature box and the electrochemical comprehensive tester body. In this embodiment, the heat insulation pad makes the temperature in the constant temperature box uniform. The ground transitions into the body of the electrochemical comprehensive tester, thereby effectively preventing the electrochemical comprehensive tester from being damaged by high or low temperatures.

Further, in the electrochemical comprehensive tester provided in this embodiment, the shell of the constant temperature box is made of transparent material, or the shell is provided with an observation window. In this embodiment, the shell made of transparent material The body or observation window is used to observe the status of the battery or capacitor under test, so that the status of the battery during testing is clearly visible and the observation effect is more intuitive. Optionally, the number of observation windows can be set to multiple, and evenly arranged at positions corresponding to the fixed clamps, for observing the status of the battery or capacitor to be tested installed on each fixed clamp.

Furthermore, the electrochemical comprehensive tester provided in this embodiment has grooves and water openings along the bottom wall of the constant temperature box. Its main function is to conduct low-temperature testing of the battery or capacitor to be tested in a high-temperature and high-humidity environment. , lead the condensed water out of the thermostatic box. At the same time, an insulating boss is provided on the bottom wall of the constant temperature box. The battery or capacitor to be tested is placed on the insulating boss during testing. The purpose is to prevent the battery or capacitor to be tested from contact with other metals except the fixed clamp 13. Contact to prevent direct short circuit of the battery or capacitor under test, and to avoid the danger of the battery or capacitor under test being immersed in water due to insufficient condensation water conduction during low temperature testing.

Furthermore, this embodiment also provides a battery testing system, which includes a plurality of electrochemical comprehensive tester bodies and a constant temperature box connected to the multiple electrochemical comprehensive tester bodies. When used, only multiple electrochemical comprehensive tester bodies need to be connected. The comprehensive tester is connected to the constant temperature box, so that one constant temperature box can control the temperature in multiple electrochemical comprehensive testers at the same time, thereby achieving the purpose of testing in a wide temperature range.

The electrochemical comprehensive tester provided in this embodiment uses fixing parts to fixedly connect the electrochemical comprehensive tester body and the constant temperature box. The connection method is simple, and the use is flexible and convenient.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (6)

1. An electrochemical comprehensive tester, characterized in that it includes a constant temperature box (20) with an opening at one end and is connected to the constant temperature box (20) for setting the temperature of the constant temperature box (20). The following is an electrochemical comprehensive tester body (10) for performing chemical composition and capacitance processing and/or electrochemical performance testing on the battery or capacitor to be tested. The electrochemical comprehensive tester body (10) includes a shell (11), a The battery detection circuit (12) in the housing (11), and the fixation device that is electrically connected to the battery detection circuit (12) and extends out of the housing (11) for installing the battery or capacitor to be tested. Clamp (13), the open end of the thermostatic box (20) is connected to the housing (11) to form a closed cavity and the fixed clamp (13) is accommodated in the closed cavity, There are multiple fixed clamps (13), and a sealing end face (111) for sealing the open end of the thermostatic box (20) is provided on the outer surface of the housing (11). Each of the fixed clips (13) is evenly arranged on the sealing end face (111), and a plurality of constant temperature isolation cavities for separating a plurality of the fixed clips (13) are correspondingly provided in the closed cavity. A plurality of partitions (24) are provided in the closed cavity, and a plurality of the constant temperature isolation chambers are separated by a plurality of the partitions (24). The plurality of constant temperature isolation chambers are respectively provided with constant temperature controllers for independent temperature adjustment. Regulating device, the thermostatic regulating device includes a temperature sensor (21), a refrigeration system (22) and a heating system (23). The electrochemical comprehensive tester also includes a temperature control system (40) connected to the thermostatic regulating device. ), the temperature control system (40) is provided on the constant temperature box (20) or the electrochemical comprehensive tester body (10), wherein the temperature sensor (21) is used to detect the constant temperature The temperature in the box (20); the temperature control system (40) is connected to the temperature sensor (21), the refrigeration system (22) and the heating system (23), and is used to control the The refrigeration system (22) cools or the heating system (23) heats to keep the temperature in the thermostatic box (20) constant within the set temperature; it is also used to receive temperature adjustment instructions sent from external equipment. And according to the temperature adjustment instruction, the temperature in the thermostatic box (20) is kept constant within the set temperature; the electrochemical comprehensive tester also includes an air induction duct (30), and the electrochemical comprehensive tester body (10) also includes a second cooling fan (14) used to dissipate heat from the electrochemical comprehensive tester body (10). The housing (11) is provided with a corresponding second cooling fan (14). ), the thermostatic box (20) is provided with an air inlet communicating with the air outlet, and the two ends of the air induction pipe (30) are connected to the air outlet and the air outlet respectively. On the air inlet, the electrochemical comprehensive tester also includes a second solenoid valve set on the air induction pipe (30). The temperature control system (40) is electrically connected to the second solenoid valve. When the refrigeration system (22) receives the temperature rise After the control command, the second solenoid valve is opened, and the heat generated by the electrochemical comprehensive tester body (10) is introduced into the constant temperature box (20). At the same time, the refrigeration system (22) is turned off and the heating system (23) is turned on. ), and raise the temperature to the set temperature range; when the temperature control system (40) receives the cooling control command, it closes the second solenoid valve, and the electrochemical comprehensive tester body (10) generates The heat is directed to the air through the air outlet and the heating system is turned off (23). 2. The electrochemical comprehensive tester according to claim 1, characterized in that, The refrigeration system (22) is a thermoelectric refrigerator. The thermoelectric refrigerator includes a refrigeration plate (221), a radiator (222), a first cooling fan (223), a thermal insulation gasket and a cooling block (224). The thermal insulation gasket is surrounded by the cooling plate (221) and is located between the radiator (222) and the cooling block (224). The first cooling fan (223) is installed on On the other end of the radiator (222), the constant temperature box (20) is provided with a heat dissipation port corresponding to the first heat dissipation fan (223). 3. The electrochemical comprehensive tester according to claim 1, characterized in that, The heating system (23) is a metal PTC heating plate or a ceramic PTC heating sheet; the fixing clip (13) is an alligator clip and/or a thimble type fixing piece. 4. The electrochemical comprehensive tester according to claim 1, characterized in that, The electrochemical comprehensive tester also includes a fixing part. Fixing parts (1111) corresponding to the open end of the thermostatic box (20) are extended on both sides of the sealing end face (111). The open end and the fixing part (1111) are locked through the fixing piece. 5. The electrochemical comprehensive tester according to claim 1, characterized in that, The battery detection circuit (12) includes a battery internal resistance test circuit, a battery charge and discharge test circuit, a battery capacity test circuit, a battery voltage test circuit, a battery current test circuit, a battery energy and power test circuit, a capacitance test circuit, and a battery temperature test. One or more of the circuits and thermostat temperature control circuits, the electrochemical comprehensive tester body (10) also includes a circuit board, the battery detection circuit (12) and the temperature control system (40) are integrated on the circuit board. 6. The electrochemical comprehensive tester according to claim 1, characterized in that, The electrochemical comprehensive tester also includes a test stand. The test rack is provided with a plurality of mounting brackets for installing a plurality of the electrochemical comprehensive tester bodies (10). The plurality of electrochemical comprehensive testers The main body (10) is correspondingly plugged into a plurality of the mounting brackets and is fixedly connected to the thermostatic box (20).