An electrochemical energy storage battery combustion testing device and method

Abstract

An electrochemical energy storage battery combustion testing device and method are disclosed. The device includes a clamping mechanism, a heating plate, an ignition mechanism, a protective mechanism, a charge / discharge machine, an infrared thermal imager, a flue gas analyzer, and a computer. The method involves: assembling the battery with the clamping mechanism; connecting the battery with the charge / discharge machine; installing the ignition mechanism; installing the protective mechanism; installing a direct flue gas extraction pipe and a gas outlet pipe within the flue and connecting them to the flue gas analyzer; setting up the infrared thermal imager; starting the charge / discharge machine and the heating plate; simulating a battery overcharge and overheating fault; triggering a battery thermal runaway accident; and testing the thermal runaway combustion during the operation of the electrochemical energy storage battery through data analysis and feedback. The parameters of the battery combustion test process are fed back to the control system through data analysis and processing, providing a more effective test of the thermal runaway combustion process of the battery during the operation of the energy storage system, and providing more valuable evidence for scientifically and effectively assessing the safety of the entire electrochemical energy storage battery system.

Description

Technical Field

[0001] This invention belongs to the field of energy storage battery combustion testing technology, and in particular relates to an electrochemical energy storage battery combustion testing device and method. Background Technology

[0002] In recent years, with the increasing power generation from wind and solar energy, there is an urgent need to build a new power system in order to realize the grid connection of new energy sources.

[0003] Currently, electrochemical energy storage batteries, represented by lithium-ion batteries and sodium-ion batteries, are widely used in fields such as power storage for wind and solar power, industrial and commercial energy storage in industrial plants and large commercial complexes, and distributed energy storage supporting charging piles for electric vehicles and electric bicycles.

[0004] However, as an energy-containing element, electrochemical energy storage batteries are inherently susceptible to the risks of discharge and fire. The positive / negative electrode materials and electrolytes of electrochemical energy storage batteries are all flammable and combustible materials, and once combustion occurs, there is a high risk of explosion.

[0005] Therefore, studying the combustion characteristics of electrochemical energy storage batteries and conducting quantitative tests on early fire signs, combustion spread characteristics, and fire and explosion risks is of great significance and provides good support for standardizing the safe application of electrochemical energy storage batteries.

[0006] At present, due to the diverse composition of electrochemical energy storage battery systems and the fact that their fire processes include various types such as gaseous fires, liquid fires, solid fires, and metal fires, traditional experimental devices and methods used to test the combustion process of materials are difficult to take into account the fire characteristics of electrochemical energy storage batteries.

[0007] Commonly used experimental apparatus for measuring the heat generated by material combustion includes cone calorimeters and ISO 9705 full-size calorimeters. However, the combustion process of batteries differs from that of general materials. Before the valve is opened, no open flame is generated. After the valve is opened, electrolyte, combustible gas, etc. are violently ejected, resulting in intense combustion. Furthermore, the combustion process is affected by factors such as the rapid combustion rate, high calorific value per unit time, and the amount of combustible material affected by the battery charge, resulting in significant differences in the combustion process.

[0008] Therefore, commonly used experimental apparatuses such as traditional cone calorimeters and ISO9705 full-size calorimeters are difficult to adapt to the testing requirements of the special combustion process of electrochemical energy storage batteries, and there are problems such as the transient values ​​of combustion being out of range or insufficient measurement accuracy.

[0009] In addition, traditional combustion state measurement methods are based on the oxygen consumption principle, which measures the heat generated during combustion by measuring the oxygen concentration in the sampled gas. However, traditional industrial oxygen concentration sensors cannot meet the requirements of accuracy and range, which makes it difficult for traditional combustion state measurement methods to meet the combustion test requirements of electrochemical energy storage batteries.

[0010] Meanwhile, due to the differences in battery system, capacity and other parameters among different electrochemical energy storage batteries, the thermal runaway combustion process of the batteries also varies greatly. Furthermore, electrical energy can affect the thermal runaway, valve opening, injection and combustion processes, which in turn leads to certain unique characteristics in the combustion process of various electrochemical energy storage batteries.

[0011] Therefore, in order to scientifically and rationally assess the combustion hazards of electrochemical energy storage batteries and improve their safety level, there is an urgent need for a testing device and method that can scientifically and accurately describe the thermal runaway combustion process of electrochemical energy storage batteries. Summary of the Invention

[0012] To address the problems existing in the prior art, this invention provides an electrochemical energy storage battery combustion testing device and method. Through data analysis and feedback, it can test the thermal runaway combustion of electrochemical energy storage batteries during operation. The parameters of the battery combustion test process can be fed back to the control system through data analysis and processing, providing a more effective test of the thermal runaway combustion process that occurs during the operation of the energy storage system. This provides a more valuable basis for scientifically and effectively assessing the safety of the entire electrochemical energy storage battery system.

[0013] To achieve the above objectives, the present invention adopts the following technical solution: an electrochemical energy storage battery combustion testing device, comprising a clamping mechanism, a heating plate, an ignition mechanism, a protective mechanism, a charge / discharge machine, an infrared thermal imager, a smoke analyzer, and a computer; the clamping mechanism is used to clamp and fix the battery for combustion testing, and the heating plate is disposed between the battery and the clamping mechanism; the ignition mechanism is located above the battery; the protective mechanism is located outside the clamping mechanism; the charge / discharge machine is connected to the battery terminals via wires; a smoke collection hood is disposed above the battery, the smoke collection hood is connected to a flue, and a gas inlet is connected to the flue. The gas outlet of the gas outlet pipe inside the flue is connected to the measuring port of the flue gas analyzer; the space between the battery and the smoke hood serves as the rising space for the flue gas, and a direct flue gas sampling pipe is also installed between the battery and the smoke hood. One end of the direct flue gas sampling pipe is located in the rising space for the flue gas, and the other end of the direct flue gas sampling pipe extends out of the protective mechanism and is connected to the measuring port of the flue gas analyzer; the infrared thermal imager is located outside the protective mechanism, and the measuring head of the infrared thermal imager is directly facing the rising space for the flue gas; the computer is located outside the protective mechanism, and the heating plate, the charge / discharge machine, the infrared thermal imager, and the flue gas analyzer are all connected to the computer for communication.

[0014] The clamping mechanism includes a left clamping plate, a right clamping plate, a left pressure plate, and a right pressure plate; the battery and heating plate are arranged side by side, with the battery and heating plate positioned between the left and right clamping plates; the left pressure plate is located outside the left clamping plate, and a pressure sensor is installed between the left pressure plate and the left clamping plate, with a heat-insulating gasket between the pressure sensor and the left clamping plate; the right pressure plate is located outside the right clamping plate, and a pressure sensor is also installed between the right pressure plate and the right clamping plate, with a heat-insulating gasket between the pressure sensor and the right clamping plate; the left and right pressure plates are fixedly connected by multiple sets of bolt assemblies, and the clamping force on the battery is adjusted by changing the tightening force of the bolt assemblies; the pressure sensor is connected to a computer for communication.

[0015] The ignition mechanism includes a support frame, a hot-face igniter, and an arc igniter. The support frame is fixed to the protective mechanism. The hot-face igniter and the arc igniter are installed side by side on the support frame. The ignition ends of the hot-face igniter and the arc igniter are both located in the flue gas rising space between the battery and the smoke hood. Both the hot-face igniter and the arc igniter are connected to a computer for communication.

[0016] The protective mechanism includes a heat-insulating support base and a protective net enclosure. A clamping mechanism that holds the battery and heating plate is placed on the heat-insulating support base, and the protective net enclosure is arranged around the heat-insulating support base.

[0017] A method for testing the combustion of an electrochemical energy storage battery, using the aforementioned electrochemical energy storage battery combustion testing device, includes the following steps:

[0018] Step 1: First, place the battery to be tested on the heat-insulating support base, then assemble the clamping mechanism with the battery, and install the heating plate during the assembly process;

[0019] Step 2: After the battery, heating plate, and clamping mechanism are assembled, connect the battery terminals to the charger / discharger using wires.

[0020] Step 3: Install the ignition mechanism. First, fix the support frame onto the heat-insulating support base. Then, install the hot-face igniter and the arc igniter onto the top of the support frame, ensuring that the ignition ends of the hot-face igniter and the arc igniter are accurately located in the flue gas rising space between the battery and the smoke hood.

[0021] Step 4: Install protective netting to completely surround the thermal insulation support base and all the testing equipment on it, thus isolating the equipment from personnel;

[0022] Step 5: First, install the gas outlet pipe inside the flue on the flue, and then connect the gas outlet of the gas outlet pipe inside the flue to the measuring port of the flue gas analyzer; at the same time, insert the flue gas direct collection pipe into the protective net enclosure, so that the flue gas inlet of the flue gas direct collection pipe is accurately located in the flue gas rising space between the battery and the smoke collection hood, and connect the gas outlet of the flue gas direct collection pipe to the measuring port of the flue gas analyzer.

[0023] Step Six: Install an infrared thermal imager outside the protective netting fence, ensuring that the measuring head of the infrared thermal imager is directly facing the space where the smoke rises;

[0024] Step 7: After all the above preparations are completed, start the charger and the heating plate. The charger will charge the battery and the heating plate will heat the battery while it is charging to simulate overcharging and overheating, thus triggering a thermal runaway accident.

[0025] Step 8: During the simulation of battery overcharge and overheating faults, the following operations need to be performed:

[0026] ① The pressure sensor inside the clamping mechanism is used to detect the pressure generated by the battery in real time. This pressure data serves as one of the bases for subsequent evaluation of the safety of the electrochemical energy storage battery system.

[0027] ② When the charger detects that the battery temperature has reached the set threshold, it stops charging the battery. At the same time, the charger monitors the voltage between the battery terminals in real time and sets two voltage threshold judgment points for the measured voltage, namely voltage threshold V1 and voltage threshold V2, where V1 > V2. If the measured voltage is greater than voltage threshold V1, the arc igniter is activated to trigger battery combustion. If the measured voltage is greater than voltage threshold V2 but less than voltage threshold V1, the hot-face igniter is activated to trigger battery combustion. If the measured voltage is less than voltage threshold V2, the arc igniter and the hot-face igniter are activated synchronously to trigger battery combustion in tandem.

[0028] ③ During the battery combustion process, the infrared thermal imager and flue gas analyzer are activated simultaneously. If the infrared thermal imager detects an open flame from the battery combustion or no open flame but the flue gas temperature exceeds the set threshold, the hot-face igniter and / or arc igniter are turned off. After turning off the hot-face igniter and / or arc igniter, if the flue gas analyzer detects that the content of CxHy combustible components in the flue gas from the direct flue gas sampling pipe exceeds the set threshold, the hot-face igniter and / or arc igniter are restarted to trigger the re-combustion of CxHy combustible components in the flue gas. When the flue gas analyzer detects that the oxygen content in the gas from the gas outlet pipe in the flue is not less than 21% and the duration exceeds one minute, it indicates that the battery combustion process has completely terminated, and the battery combustion test ends at this time.

[0029] The beneficial effects of this invention are:

[0030] The electrochemical energy storage battery combustion testing device and method of the present invention can test the thermal runaway combustion of the electrochemical energy storage battery during operation through data analysis and feedback. The parameters of the battery combustion test process can be fed back to the control link through data analysis and processing, so as to more effectively test the situation of thermal runaway combustion of the battery during the operation of the energy storage system, and provide more valuable basis for scientifically and effectively assessing the safety of the entire electrochemical energy storage battery system. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an electrochemical energy storage battery combustion testing device according to the present invention;

[0032] Figure 2 This is a top view of the structural diagram of the clamping mechanism, battery, and heating plate assembly of the present invention.

[0033] In the diagram, 1—heating plate, 2—infrared thermal imager, 3—flue gas analyzer, 4—battery, 5—smoke hood, 6—flue, 7—gas outlet pipe inside the flue, 8—flue gas, 9—left clamping plate, 10—right clamping plate, 11—left pressure plate, 12—right pressure plate, 13—pressure sensor, 14—heat insulation gasket, 15—bolt assembly, 16—support frame, 17—hot surface igniter, 18—arc igniter, 19—direct flue gas collection pipe, 20—heat insulation support base, 21—protective net enclosure, 22—charger / discharger. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 , 2As shown, an electrochemical energy storage battery combustion testing device includes a clamping mechanism, a heating plate 1, an ignition mechanism, a protective mechanism, a charge / discharge machine 22, an infrared thermal imager 2, a smoke analyzer 3, and a computer. The clamping mechanism is used to hold and fix a battery 4 for combustion testing. The heating plate 1 is positioned between the battery 4 and the clamping mechanism. The ignition mechanism is located above the battery 4. The protective mechanism is located outside the clamping mechanism. The charge / discharge machine 22 is connected to the terminals of the battery 4 via wires. A smoke collection hood 5 is installed above the battery 4, and the smoke collection hood 5 is connected to a flue 6. A gas outlet pipe 7 is connected to the flue 6. The gas outlet of 7 is connected to the measuring port of the flue gas analyzer 3; the space between the battery 4 and the smoke hood 5 serves as the rising space for the flue gas 8, and a flue gas direct sampling pipe 19 is also provided between the battery 4 and the smoke hood 5. One end of the flue gas direct sampling pipe 19 is located in the rising space of the flue gas 8, and the other end of the flue gas direct sampling pipe 19 extends out of the protective mechanism and is connected to the measuring port of the flue gas analyzer 3; the infrared thermal imager 2 is located outside the protective mechanism, and the measuring head of the infrared thermal imager 2 is directly opposite the rising space of the flue gas 8; the computer is located outside the protective mechanism, and the heating plate 1, the charge / discharge machine 22, the infrared thermal imager 2, and the flue gas analyzer 3 are all connected to the computer for communication.

[0036] The clamping mechanism includes a left clamping plate 9, a right clamping plate 10, a left pressure plate 11, and a right pressure plate 12. The battery 4 and the heating plate 1 are arranged side by side, with the battery 4 and the heating plate 1 positioned between the left clamping plate 9 and the right clamping plate 10. The left pressure plate 11 is located outside the left clamping plate 9, and a pressure sensor 13 is arranged between the left pressure plate 11 and the left clamping plate 9. A heat insulation gasket 14 is also provided between the pressure sensor 13 and the left clamping plate 9. The right pressure plate 12 is located outside the right clamping plate 10, and a pressure sensor 13 is also arranged between the right pressure plate 12 and the right clamping plate 10. A heat insulation gasket 14 is also provided between the pressure sensor 13 and the right clamping plate 10. The left pressure plate 11 and the right pressure plate 12 are fixedly connected by multiple sets of bolt assemblies 15. The clamping force on the battery 4 is adjusted by changing the tightening force of the bolt assemblies 15. The pressure sensor 13 is connected to a computer for communication.

[0037] The ignition mechanism includes a support frame 16, a hot-face igniter 17, and an arc igniter 18. The support frame 16 is fixed to the protective mechanism. The hot-face igniter 17 and the arc igniter 18 are installed side by side on the support frame 16. The ignition ends of the hot-face igniter 17 and the arc igniter 18 are both located in the rising space of the flue gas 8 between the battery 4 and the smoke hood 5. Both the hot-face igniter 17 and the arc igniter 18 are connected to a computer for communication.

[0038] The protective mechanism includes a heat-insulating support base 20 and a protective net enclosure 21. A clamping mechanism that holds the battery 4 and the heating plate 1 is placed on the heat-insulating support base 20, and the protective net enclosure 21 is arranged around the heat-insulating support base 20.

[0039] A method for testing the combustion of an electrochemical energy storage battery, using the aforementioned electrochemical energy storage battery combustion testing device, includes the following steps:

[0040] Step 1: First, place the battery 4, which needs to be tested for combustion, on the heat insulation support base 20. Then, assemble the clamping mechanism with the battery 4, and complete the installation of the heating plate 1 during the assembly process.

[0041] Step 2: After the battery 4, heating plate 1 and clamping mechanism are assembled, connect the terminals of the battery 4 to the charge / discharger 22 with wires;

[0042] Step 3: Install the ignition mechanism. First, fix the support frame 16 onto the heat insulation support base 20. Then, install the hot surface igniter 17 and the arc igniter 18 onto the top of the support frame 16, ensuring that the ignition ends of the hot surface igniter 17 and the arc igniter 18 are accurately located in the rising space of the smoke 8 between the battery 4 and the smoke hood 5.

[0043] Step 4: Install protective netting 21 to completely surround the heat insulation support base 20 and all the testing equipment on it, thus isolating the equipment from personnel;

[0044] Step 5: First, install the gas outlet pipe 7 inside the flue on the flue 6, and then connect the gas outlet of the gas outlet pipe 7 inside the flue to the measuring port of the flue gas analyzer 3; at the same time, insert the flue gas direct collection pipe 19 into the protective net enclosure 21, so that the flue gas inlet of the flue gas direct collection pipe 19 is accurately located in the rising space of the flue gas 8 between the battery 4 and the smoke collection hood 5, and connect the gas outlet of the flue gas direct collection pipe 19 to the measuring port of the flue gas analyzer 3.

[0045] Step 6: Install an infrared thermal imager 2 outside the protective netting 21, ensuring that the measuring head of the infrared thermal imager 2 is directly facing the rising space of the smoke 8;

[0046] Step 7: After all the above preparations are completed, start the charger 22 and the heating plate 1. The charger 22 charges the battery 4 and the heating plate 1 heats the battery 4 in the charging state to simulate the overcharge and overheating fault of the battery 4, so as to trigger the thermal runaway accident of the battery 4.

[0047] Step 8: During the simulation of overcharge and overheating fault of battery 4, the following operations need to be performed:

[0048] ① The pressure sensor 13 inside the clamping mechanism is used to detect the pressure generated by the battery 4 in real time. This pressure data serves as one of the bases for subsequent evaluation of the safety of the electrochemical energy storage battery system.

[0049] ② When the charger 22 detects that the temperature of the battery 4 has reached the set threshold, the charger 22 stops charging the battery 4. At the same time, the charger 22 monitors the voltage between the terminals of the battery 4 in real time and sets two voltage threshold judgment points for the measured voltage, namely voltage threshold V1 and voltage threshold V2, where V1 > V2. If the measured voltage is greater than voltage threshold V1, the arc igniter 18 is activated to trigger the combustion of the battery 4. If the measured voltage is greater than voltage threshold V2 but less than voltage threshold V1, the hot surface igniter 17 is activated to trigger the combustion of the battery 4. If the measured voltage is less than voltage threshold V2, the arc igniter 18 and the hot surface igniter 17 are activated synchronously to trigger the combustion of the battery 4 in concert.

[0050] ③ During the combustion of battery 4, infrared thermal imager 2 and flue gas analyzer 3 are activated simultaneously. If infrared thermal imager 2 detects that battery 4 produces an open flame or no open flame but the flue gas temperature exceeds the set threshold, then the hot-face igniter 17 and / or arc igniter 18 are turned off. After turning off the hot-face igniter 17 and / or arc igniter 18, if the flue gas analyzer 3 detects that the content of CxHy combustible components in the flue gas of the flue gas direct sampling pipe 19 exceeds the set threshold, then the hot-face igniter 17 and / or arc igniter 18 are restarted to trigger the re-combustion of CxHy combustible components in the flue gas. When the flue gas analyzer 3 detects that the oxygen content in the gas in the gas outlet pipe 7 in the flue is not less than 21% and the duration exceeds one minute, it indicates that the combustion process of battery 4 has completely terminated, and the combustion test of battery 4 ends at this time.

[0051] The solutions described in the embodiments are not intended to limit the scope of patent protection of this invention. All equivalent implementations or modifications that do not depart from the scope of this invention are included in the patent scope of this case.

Claims

1. A method for testing the combustion of an electrochemical energy storage battery, comprising an electrochemical energy storage battery combustion testing device, characterized in that: The device includes a clamping mechanism, a heating plate, an ignition mechanism, a protective mechanism, a charge / discharge machine, an infrared thermal imager, a flue gas analyzer, and a computer. The clamping mechanism is used to hold and fix the battery for combustion testing. The heating plate is positioned between the battery and the clamping mechanism. The ignition mechanism is located above the battery. The protective mechanism is located outside the clamping mechanism. The charge / discharge machine is connected to the battery terminals via wires. A smoke collection hood is installed above the battery, connected to a flue. A gas outlet pipe is connected to the flue, and the gas outlet of the gas outlet pipe is connected to the flue gas analyzer. The measuring port is connected; the space between the battery and the smoke hood serves as the rising space for flue gas. A direct flue gas sampling pipe is also installed between the battery and the smoke hood, with one end of the pipe located in the rising space and the other end extending out of the protective mechanism and connected to the measuring port of the flue gas analyzer; the infrared thermal imager is located outside the protective mechanism, with its measuring head facing the rising space; the computer is located outside the protective mechanism, and the heating plate, charger, infrared thermal imager, and flue gas analyzer are all communicatively connected to the computer; the method includes the following steps: Step 1: First, place the battery to be tested on the heat-insulating support base, then assemble the clamping mechanism with the battery, and install the heating plate during the assembly process; Step 2: After the battery, heating plate, and clamping mechanism are assembled, connect the battery terminals to the charger / discharger using wires. Step 3: Install the ignition mechanism. First, fix the support frame onto the heat-insulating support base. Then, install the hot-face igniter and the arc igniter onto the top of the support frame, ensuring that the ignition ends of the hot-face igniter and the arc igniter are accurately located in the flue gas rising space between the battery and the smoke hood. Step 4: Install protective netting to completely surround the thermal insulation support base and all the testing equipment on it, thus isolating the equipment from personnel; Step 5: First, install the gas outlet pipe inside the flue on the flue, and then connect the gas outlet of the gas outlet pipe inside the flue to the measuring port of the flue gas analyzer; at the same time, insert the flue gas direct collection pipe into the protective net enclosure, so that the flue gas inlet of the flue gas direct collection pipe is accurately located in the flue gas rising space between the battery and the smoke collection hood, and connect the gas outlet of the flue gas direct collection pipe to the measuring port of the flue gas analyzer. Step Six: Install an infrared thermal imager outside the protective netting fence, ensuring that the measuring head of the infrared thermal imager is directly facing the space where the smoke rises; Step 7: After all the above preparations are completed, start the charger and the heating plate. The charger will charge the battery and the heating plate will heat the battery while it is charging to simulate overcharging and overheating, thus triggering a thermal runaway accident. Step 8: During the simulation of battery overcharge and overheating faults, the following operations need to be performed: ① The pressure sensor inside the clamping mechanism is used to detect the pressure generated by the battery in real time. This pressure data serves as one of the bases for subsequent evaluation of the safety of the electrochemical energy storage battery system. ② When the charger detects that the battery temperature has reached the set threshold, it stops charging the battery. At the same time, the charger monitors the voltage between the battery terminals in real time and sets two voltage threshold judgment points for the measured voltage, namely voltage threshold V1 and voltage threshold V2, where V1 > V2. If the measured voltage is greater than voltage threshold V1, the arc igniter is activated to trigger battery combustion. If the measured voltage is greater than voltage threshold V2 but less than voltage threshold V1, the hot-face igniter is activated to trigger battery combustion. If the measured voltage is less than voltage threshold V2, the arc igniter and the hot-face igniter are activated synchronously to trigger battery combustion in tandem. ③ During the battery combustion process, the infrared thermal imager and flue gas analyzer are activated simultaneously. If the infrared thermal imager detects an open flame from the battery combustion or no open flame but the flue gas temperature exceeds the set threshold, the hot-face igniter and / or arc igniter are turned off. After turning off the hot-face igniter and / or arc igniter, if the flue gas analyzer detects that the content of CxHy combustible components in the flue gas from the direct flue gas sampling pipe exceeds the set threshold, the hot-face igniter and / or arc igniter are restarted to trigger the re-combustion of CxHy combustible components in the flue gas. When the flue gas analyzer detects that the oxygen content in the gas from the gas outlet pipe in the flue is not less than 21% and the duration exceeds one minute, it indicates that the battery combustion process has completely terminated, and the battery combustion test ends at this time.

2. The method for testing the combustion of an electrochemical energy storage battery according to claim 1, characterized in that: The clamping mechanism includes a left clamping plate, a right clamping plate, a left pressure plate, and a right pressure plate; the battery and heating plate are arranged side by side, with the battery and heating plate positioned between the left and right clamping plates; the left pressure plate is located outside the left clamping plate, and a pressure sensor is installed between the left pressure plate and the left clamping plate, with a heat-insulating gasket between the pressure sensor and the left clamping plate; the right pressure plate is located outside the right clamping plate, and a pressure sensor is also installed between the right pressure plate and the right clamping plate, with a heat-insulating gasket between the pressure sensor and the right clamping plate; the left and right pressure plates are fixedly connected by multiple sets of bolt assemblies, and the clamping force on the battery is adjusted by changing the tightening force of the bolt assemblies; the pressure sensor is connected to a computer for communication.

3. The method for testing the combustion of an electrochemical energy storage battery according to claim 1, characterized in that: The ignition mechanism includes a support frame, a hot-face igniter, and an arc igniter. The support frame is fixed to the protective mechanism. The hot-face igniter and the arc igniter are installed side by side on the support frame. The ignition ends of the hot-face igniter and the arc igniter are both located in the flue gas rising space between the battery and the smoke hood. Both the hot-face igniter and the arc igniter are connected to a computer for communication.

4. The method for testing the combustion of an electrochemical energy storage battery according to claim 1, characterized in that: The protective mechanism includes a heat-insulating support base and a protective net enclosure. A clamping mechanism that holds the battery and heating plate is placed on the heat-insulating support base, and the protective net enclosure is arranged around the heat-insulating support base.

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