CN113884885A - Energy storage battery safety diagnosis system - Google Patents
Energy storage battery safety diagnosis system Download PDFInfo
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- CN113884885A CN113884885A CN202111231806.8A CN202111231806A CN113884885A CN 113884885 A CN113884885 A CN 113884885A CN 202111231806 A CN202111231806 A CN 202111231806A CN 113884885 A CN113884885 A CN 113884885A
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- container
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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Abstract
The invention relates to a safety diagnosis system of an energy storage battery, which comprises a container diagnosis module and a battery pack diagnosis module; the container diagnosis module is used for diagnosing the temperature condition of the whole space of the container; the battery pack diagnosis module is used for diagnosing the temperature condition of the internal space of the battery pack and reporting the temperature condition to the container diagnosis module when abnormality is found. The invention can diagnose the temperature before fire happens to any position in the battery pack and quickly judge the abnormal position of the temperature; meanwhile, temperature diagnosis can be carried out before fire disaster happens to any battery pack or high-voltage connecting wire harness in the container or the indoor energy storage system, and the abnormal position of the temperature can be judged quickly.
Description
Technical Field
The invention relates to the technical field of new energy batteries, in particular to a safety diagnosis system for an energy storage battery.
Background
The energy storage trade conflagration takes place occasionally at present, and energy storage system mainly comprises energy storage battery package and control system, and the inside intensive electric core monomer of installing of energy storage battery package, for control battery ambient temperature, generally install the battery package in inclosed space or container, so in case the conflagration takes place will arouse chain reaction, and the intensity of a fire is difficult to control. The fire of the battery pack is mainly caused by thermal runaway, and the current method for monitoring the temperature of the battery pack is to install thermistor temperature sensors in the container and on a battery core module, wherein the resistance value of the thermistor temperature sensors changes along with the temperature change, and the temperature of a measured object is calculated by measuring the resistance value of the thermistor temperature sensors. The temperature sensor of the container is fixed on the top of the container and is generally installed together with the smoke sensor to form a fire safety system. The temperature sensor inside the battery pack is directly fixed on the surface of the battery core and then connected with the battery control circuit through a wire harness to form a battery control system. It is also called a contact temperature sensor because it needs to be fixed directly on the surface of the battery core. The number of the battery cell modules installed and the number of the battery cell modules connected in series are generally 1: 2. When the temperature of the battery core is abnormal, the temperature can be rapidly transmitted to the battery control system and the on-off of the module is controlled.
The existing scheme has an obvious defect that the existing scheme is limited by wiring harnesses, cost and actual needs, has few measuring point positions, only considers the temperature of the surface of a battery cell, and ignores fire caused by other factors. Research shows that 90% of fire disasters in the energy storage industry are not directly caused by the battery core but belong to electric combustion and are caused by the combustion of equipment such as an electric wire of the equipment, for the battery pack, when poor contact occurs at a connection part to cause temperature rise, the temperature monitoring of the battery pack cannot be quickly found, and when high temperature caused by the combustion of the battery core is reversely transmitted to a thermistor temperature sensor on the surface of the battery core, the fire situation can be unavoidable. In addition, if the fire is transmitted from the outside, the internal battery cell cannot be monitored quickly. The temperature sensor installed on the upper part of the container belongs to a fire-fighting system and is independent of a battery control system of a battery, and when the fire-fighting alarm occurs, the linked fire-fighting liquid is sprayed to extinguish fire. Therefore, the current energy storage safety monitoring has great problems, the temperature safety detection is absent in the battery pack, the temperature detection in the container belongs to the remedy after fire occurs, and the two systems are mutually independent to cause resource waste.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an energy storage battery safety diagnosis system.
The technical scheme adopted by the invention for realizing the purpose is as follows: the safety diagnosis system for the energy storage battery comprises a container diagnosis module and a battery pack diagnosis module; the container diagnosis module is used for diagnosing the temperature condition of the whole space of the container; the battery pack diagnosis module is used for diagnosing the temperature condition of the internal space of the battery pack and reporting the temperature condition to the container diagnosis module when abnormality is found.
The number of the battery pack diagnosis modules is the same as that of the battery packs in the container.
The container diagnosis module comprises a container shell, a battery pack, a container temperature measurement movement frame, a first infrared thermometer and a temperature collection master controller; the battery packs are arranged on two sides in the container shell in a cluster mode, the container temperature measurement moving frame and the temperature collection master controller are fixed in the container shell, the battery packs are distributed on two sides of the container temperature measurement moving frame, the first infrared temperature measuring instrument is installed on the container temperature measurement moving frame, and the first infrared temperature measuring instrument is connected with the temperature collection master controller.
The container temperature measurement movement frame comprises a support beam, a transverse movement guide rail, a transverse movement motor, a vertical movement guide rail and a vertical movement motor; the supporting beams are fixedly connected to two ends of the transverse moving guide rail, the supporting beams and the transverse moving guide rail are fixed to the inner side wall of the container shell, the transverse moving motor is movably connected to the transverse moving guide rail, the transverse moving motor is fixedly connected to the vertical moving guide rail, the vertical moving motor is movably connected to the vertical moving guide rail, and the vertical moving motor is fixedly connected with the first infrared thermometer.
The battery pack diagnosis module comprises a bottom shell, a battery cell module, a battery pack temperature measurement moving frame, an upper cover plate, a second infrared thermometer and a battery control system; the battery cell module is installed in the bottom shell, the upper portion of the bottom shell is connected with the upper cover plate, the bottom of the upper cover plate is fixedly connected with a battery pack temperature measurement moving frame, the second infrared thermometer is installed on the battery pack temperature measurement moving module and connected with the battery control system, and the battery control system is fixedly connected with the bottom shell and is connected with the temperature collection master controller.
The battery pack temperature measurement moving frame comprises an X-axis motor, an X-axis sliding block, an X-axis guide rail, an X-axis lead screw, a Y-axis motor, a Y-axis sliding block, a Y-axis guide rail and a Y-axis lead screw; one end of the X-axis guide rail is fixedly connected with the X-axis motor, the X-axis screw rod is rotatably connected to the X-axis guide rail, the X-axis slider is movably connected to the X-axis screw rod, the X-axis slider is fixedly connected to one ends of the Y-axis motor and the Y-axis guide rail, the Y-axis screw rod is rotatably connected to the Y-axis guide rail, the Y-axis slider is movably connected to the Y-axis screw rod, and the Y-axis slider is fixedly connected to the second infrared thermometer.
The invention has the following advantages and beneficial effects:
1. the infrared temperature monitoring module and the movement mechanism are arranged in the battery pack and the container, and the module can monitor the temperature values of all components of the battery cell module and the battery pack in cooperation with the movement mechanism.
2. When the battery pack is internally connected with the battery core surface and the connecting piece or the external circuit of the battery pack, the sensor can immediately monitor the abnormal temperature rise.
3. The internal and external temperature values of the invention are uniformly transmitted to the control system for data analysis, thus thoroughly ensuring the energy storage safety of the battery.
4. The invention can diagnose the temperature before fire happens to any position in the battery pack and quickly judge the abnormal position of the temperature; meanwhile, temperature diagnosis can be carried out before fire disaster happens to any battery pack or high-voltage connecting wire harness in the container or the indoor energy storage system, and the abnormal position of the temperature can be judged quickly.
5. According to the invention, the temperature measurement in the battery pack and the temperature measurement of the external environment of the battery pack are integrated in one temperature acquisition master control device, so that the temperature measurement component is simplified, the temperature measurement data is uniformly analyzed, and the reason of the fire accident can be rapidly judged.
Drawings
FIG. 1 is a block diagram of a container diagnostic module of the present invention;
FIG. 2 is a block diagram of a container thermometric moving frame of the present invention;
FIG. 3 is a block diagram of a battery pack diagnostic module of the present invention;
fig. 4 is a structural view of a temperature measuring moving frame of a battery pack according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The safety diagnosis system for the energy storage battery comprises a container diagnosis module and a battery pack diagnosis module, wherein the container diagnosis module is mainly used for diagnosing the temperature condition of the whole space of a container and comprises a container shell 15, a battery pack 11, a container temperature measurement moving frame 13, a first infrared temperature measuring instrument 12 and a temperature collection master controller 14. As shown in figure 1, the battery packs 11 are arranged at two sides in the container in a cluster form, the container temperature measurement moving frame 13 is arranged in a middle passageway, the first infrared thermometer 12 is arranged on the container temperature measurement moving frame 13, all the battery packs 11 can be scanned along a moving route, and the scanned data is accessed to the temperature acquisition master control 14. As shown in fig. 2, the container temperature measuring moving frame 13 includes a support beam 135, a lateral moving rail 131, a lateral moving motor 133, a vertical moving rail 132, and a vertical moving motor 134. The support beam 135 is connected with the transverse moving guide rail 131 and is jointly fixed on the side wall of the container, and the support beam 135 is used for supporting the transverse moving guide rail 131; the transverse moving motor 133 can move on the transverse moving guide rail 131, the transverse moving motor 133 is fixedly connected with the vertical moving motor 134 and the vertical moving guide rail 132, and the vertical moving motor 134 and the vertical moving guide rail 132 are driven to move together when the transverse moving motor 133 moves; the vertical moving motor 134 can move on the vertical moving guide rail 132, the vertical moving motor 134 is fixedly connected with the first infrared thermometer 12, and the vertical moving motor 134 can drive the first infrared thermometer 12 to move vertically when moving vertically. In conclusion, the first infrared thermometer 12 can scan and cover the surfaces of all the battery packs 11 in the container along with the container temperature measurement moving frame 13.
The battery pack diagnosis module is mainly used for diagnosing the temperature condition of the internal space of the battery pack and comprises a bottom shell 21, a battery cell module 22, a battery pack temperature measurement moving frame 23, an upper cover plate 24 and a second infrared thermometer 25. As shown in fig. 3, the electric core module is placed in the bottom case 21 of the battery pack, the temperature measuring moving frame 23 of the battery pack is installed inside the upper cover plate 24, the second infrared thermometer 25 is installed on the temperature measuring moving frame 23 of the battery pack, the upper surface of the whole battery pack can be scanned along with the moving line, the scanned data is accessed to the battery control system 26 of each battery pack, and the temperature collecting master controller 14 accessed to the side wall of the container is summarized. As shown in fig. 4, the battery pack temperature measurement moving frame 23 includes an X-axis motor 231, an X-axis slider 232, an X-axis guide rail 233, an X-axis lead screw 234, a Y-axis motor 235, a Y-axis slider 236, a Y-axis guide rail 237, and a Y-axis lead screw 238. When the X-axis motor 231 is started, the X-axis screw rod 234 rotates to control the X-axis slider 232 to move back and forth along the X-axis guide rail 233; the X-axis sliding block 232 is fixedly connected with the Y-axis motor 235 and the Y-axis guide rail 237, so that the Y-axis motor 235 and the Y-axis guide rail 237 can move together with the X-axis sliding block 232; when the Y-axis motor 235 is started, the Y-axis lead screw 238 rotates to control the Y-axis slider 236 to move back and forth along the Y-axis guide rail 237; the Y-axis slider 236 is fixedly connected to the second infrared thermometer 25, so that the second infrared thermometer 25 can move together with the Y-axis slider 236. To sum up, the second infrared thermometer 25 can scan the surface covering all the components in the battery pack along with the battery pack temperature measurement moving frame 23.
When the temperature of the object is higher than the absolute zero degree, electromagnetic waves are radiated to the periphery continuously due to the existence of the internal thermal motion of the object, wherein the electromagnetic waves comprise infrared rays with the wave band of 0.75-100 mu m. To detect the temperature, the energy of the full wave band is not required to be detected, and the infrared wave band concentrates a large amount of radiation energy, so that the detectors for measuring the temperature concentrate the infrared wave band. The stronger the radiation energy of the object with the temperature rise, which is the theoretical basis of infrared temperature measurement. The infrared thermometer consists of an optical system, a photoelectric detector, a signal amplifier, a signal processor and the like, when an object is irradiated by incident radiation, the temperature rises, a temperature difference is formed between the object and a reference standard, and a temperature difference potential is generated. The temperature of the object can be obtained by calibrating the temperatures corresponding to different thermoelectric potentials. Because the thermoelectric potential difference is weak, a power amplifier is generally connected to amplify the signal. And the collected data in the battery pack is accessed into a battery control system for unified analysis and processing.
The infrared thermometer comprises an optical device, and the problem of measuring the size and the optimal distance of an object exists in the optical device. According to the inverse square law, the observation distance is doubled, and the target size is theoretically doubled. The invention can adjust the scanning distance to make the observation target occupy the full view field, so the working distance can not affect the precision, in order to obtain the best scanning effect, the infrared thermometer of the invention can directly scan the surface of the object to be measured, the light ray has no deflection, thereby obtaining the accurate temperature value.
When the energy storage system operates normally, the container diagnosis module and the battery pack diagnosis module work simultaneously. For the container diagnostic module: the transverse moving motor 133 is started, the motor cruises on the transverse moving guide rail 131, the transverse moving motor 133 is fixedly connected with the vertical moving motor 134 and the vertical moving guide rail 132, and the transverse moving motor 133 drives the vertical moving motor 134 and the vertical moving guide rail 132 to move together when moving; the vertical moving motors 134 can be started simultaneously and move on the vertical moving guide rails 132, the vertical moving motors 134 are fixedly connected with the first infrared temperature measuring instrument 12, and the vertical moving motors 134 drive the first infrared temperature measuring instrument 12 to move vertically when moving vertically. Therefore, the first infrared thermometer 12 can perform covering scanning on the surfaces of all the battery packs 11 in the whole container, when the temperature of a certain position is found to be abnormal, the motor can be quickly adjusted to move the thermometer to the position near the battery pack for confirming again, and after the temperature is confirmed, data are transmitted to the temperature collection master controller 14 on the side wall of the container.
For the battery pack diagnostic module: when the X-axis motor 231 is started, the X-axis screw 234 rotates to control the X-axis slider 232 to cruise along the X-axis guide rail 233; the X-axis slider 232 is fixedly connected with a Y-axis motor 235 and a Y-axis guide rail 237, and meanwhile, the Y-axis motor 235 is started, a Y-axis lead screw 238 rotates to control the Y-axis slider 236 to move back and forth along the Y-axis guide rail 237; the Y-axis slider 236 is fixedly connected with the second infrared thermometer 25, and the second infrared thermometer 25 and the Y-axis slider 236 can move together. Therefore, the second infrared thermometer 25 can scan the surfaces covering all the components in the battery pack along with the battery pack temperature measurement moving frame 23, when the temperature of a certain position is found to be abnormal, the motor can be quickly adjusted to move the thermometer to the position in the battery pack for confirming again, after the temperature is confirmed, data is transmitted to the battery control system 26, and finally the data is collected to the temperature collection master control 14 on the side wall of the container.
Claims (6)
1. The safety diagnosis system for the energy storage battery is characterized by comprising a container diagnosis module and a battery pack diagnosis module; the container diagnosis module is used for diagnosing the temperature condition of the whole space of the container; the battery pack diagnosis module is used for diagnosing the temperature condition of the internal space of the battery pack and reporting the temperature condition to the container diagnosis module when abnormality is found.
2. The energy storage battery safety diagnosis system according to claim 1, characterized in that the number of the battery pack diagnosis modules is the same as the number of the battery packs in the container.
3. The energy storage battery safety diagnosis system according to claim 1, wherein the container diagnosis module comprises a container shell, a battery pack, a container temperature measurement movement frame, a first infrared thermometer and a temperature collection master controller; the battery packs are arranged on two sides in the container shell in a cluster mode, the container temperature measurement moving frame and the temperature collection master controller are fixed in the container shell, the battery packs are distributed on two sides of the container temperature measurement moving frame, the first infrared temperature measuring instrument is installed on the container temperature measurement moving frame, and the first infrared temperature measuring instrument is connected with the temperature collection master controller.
4. The energy storage battery safety diagnosis system according to claim 3, wherein the container temperature measurement moving frame comprises a support beam, a transverse moving guide rail, a transverse moving motor, a vertical moving guide rail and a vertical moving motor; the supporting beams are fixedly connected to two ends of the transverse moving guide rail, the supporting beams and the transverse moving guide rail are fixed to the inner side wall of the container shell, the transverse moving motor is movably connected to the transverse moving guide rail, the transverse moving motor is fixedly connected to the vertical moving guide rail, the vertical moving motor is movably connected to the vertical moving guide rail, and the vertical moving motor is fixedly connected with the first infrared thermometer.
5. The energy storage battery safety diagnosis system according to claim 3, wherein the battery pack diagnosis module comprises a bottom shell, a battery cell module, a battery pack temperature measurement moving frame, an upper cover plate, a second infrared thermometer and a battery control system; the battery cell module is installed in the bottom shell, the upper portion of the bottom shell is connected with the upper cover plate, the bottom of the upper cover plate is fixedly connected with a battery pack temperature measurement moving frame, the second infrared thermometer is installed on the battery pack temperature measurement moving module and connected with the battery control system, and the battery control system is fixedly connected with the bottom shell and is connected with the temperature collection master controller.
6. The energy storage battery safety diagnosis system according to claim 1, wherein the battery pack temperature measurement moving frame comprises an X-axis motor, an X-axis sliding block, an X-axis guide rail, an X-axis screw rod, a Y-axis motor, a Y-axis sliding block, a Y-axis guide rail and a Y-axis screw rod; one end of the X-axis guide rail is fixedly connected with the X-axis motor, the X-axis screw rod is rotatably connected to the X-axis guide rail, the X-axis slider is movably connected to the X-axis screw rod, the X-axis slider is fixedly connected to one ends of the Y-axis motor and the Y-axis guide rail, the Y-axis screw rod is rotatably connected to the Y-axis guide rail, the Y-axis slider is movably connected to the Y-axis screw rod, and the Y-axis slider is fixedly connected to the second infrared thermometer.
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| CN202111231806.8A CN113884885A (en) | 2021-10-22 | 2021-10-22 | Energy storage battery safety diagnosis system |
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| CN202111231806.8A CN113884885A (en) | 2021-10-22 | 2021-10-22 | Energy storage battery safety diagnosis system |
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