CN212181315U - Power battery laboratory safety coefficient - Google Patents
Power battery laboratory safety coefficient Download PDFInfo
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- CN212181315U CN212181315U CN202021187134.6U CN202021187134U CN212181315U CN 212181315 U CN212181315 U CN 212181315U CN 202021187134 U CN202021187134 U CN 202021187134U CN 212181315 U CN212181315 U CN 212181315U
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Abstract
The application provides a power battery laboratory safety system, includes: the system comprises a central processing unit, a test process unit, a high-pressure water mist unit, a storage room monitoring unit, an accident fan unit and a building fire-fighting unit; wherein the test process unit is configured to control a test process of the power cell and includes the following components: the environment-friendly intelligent temperature control system comprises a control console, an environment cabin and a temperature control assembly for controlling the temperature of the environment cabin; and a power supply assembly for testing the process unit; the high-pressure water mist unit is configured to spray a cooling and flame-retardant medium into the environmental chamber in a high-pressure water mist mode; wherein, the signal of central processing unit is connected to the beacon, and the central processing unit still includes the buzzer.
Description
Technical Field
The application relates to a power battery laboratory safety system; in particular to a power battery laboratory emergency safety control system.
Background
The new energy automobile industry develops rapidly. The lithium ion power battery, as a core technology of a new energy automobile power propulsion system, is highly concerned and widely researched by the industry and academia, and achieves certain technological achievements.
However, in the development of technology related to power cells, problems such as thermal runaway of the power cells are also exposed. The main reason for the accidental combustion of the new energy automobile in the post-delivery use process is that the new energy automobile is subjected to the accidental combustion. Therefore, how to improve the safety of the power battery is very important, and therefore, how to provide a safety research environment for the power battery is urgent.
Therefore, it is desirable to provide an efficient safety system for monitoring a power cell laboratory to ensure the safety of the laboratory and the associated personnel.
Although the prior literature discloses the investigation of laboratory safety issues for power cells. However, the prior art solution has problems, such as in the case of abnormal power battery test, relying on the operator to actively determine whether and how to safely take the corresponding measures.
It is therefore desirable to provide a power cell laboratory safety technique to enable automatic and safe stopping of testing in the event of an abnormal condition of the power cell to minimize the risk and injury to laboratory equipment and laboratory related personnel.
SUMMERY OF THE UTILITY MODEL
The present application provides in one aspect a power cell laboratory safety system comprising:
the system comprises a central processing unit, a test process unit, a high-pressure water mist unit, a storage room monitoring unit, an accident fan unit and a building fire fighting unit, wherein the test process unit, the high-pressure water mist unit, the storage room monitoring unit, the accident fan unit and the building fire fighting unit are respectively connected to the central processing unit and are in signal communication with the central processing unit;
wherein the test process unit is configured to control a test process of the power cell, and includes the following components: a console configured to be able to control the start and stop of the power cell test; an environmental chamber configured to house a power cell for testing; a temperature control assembly configured to enable control of an ambient cabin temperature; and a power supply assembly configured to be capable of supplying power to other components of the test process unit;
the high-pressure water mist unit comprises a pipeline and an electric tracing assembly configured to trace heat to the pipeline, and is configured to be suitable for spraying a cooling flame-retardant medium into the environmental chamber in a high-pressure water mist mode;
wherein the central processing unit includes a buzzer and is configured to be connectable to a lighthouse and in signal communication with the lighthouse.
According to one possible embodiment, the electric trace assembly includes an electric trace band extending along or wrapped around the conduit.
According to one possible embodiment, the high-pressure water mist unit comprises an air sampling assembly configured to detect the concentration of smoke in the environmental compartment.
According to one possible embodiment, the lighthouse is configured to emit light of different colors corresponding to the smoke concentration in the environmental chamber detected by the air sampling assembly.
According to one possible embodiment, the high-pressure water mist unit is configured to be activated to spray the temperature-reducing and flame-retarding medium into the environmental chamber in case the smoke concentration in the environmental chamber detected by the air sampling assembly reaches a second threshold value, wherein the second threshold value is higher than the first threshold value.
According to a feasible implementation mode, the test process unit is configured to close the environmental chamber and the temperature control system under the condition that the smoke concentration in the environmental chamber detected by the air sampling assembly reaches a second threshold value, close the power supply of the power supply assembly, and start the high-pressure water mist unit to spray the cooling and flame-retardant medium into the environmental chamber, wherein the second threshold value is higher than the first threshold value.
According to one possible embodiment, the high-pressure water mist unit is configured to detect whether the electric heat tracing assembly is out of order; and is
The test process unit is configured to set the temperature within the environmental chamber to a safe temperature in the event of a failure of the electrical heat trace assembly, and/or to stop an ongoing power cell test, and/or to prevent the start of a new power cell test.
According to one possible embodiment, the storage room monitoring unit is configured to be able to detect storage room temperature and/or smoke and in the event of an abnormal rise in storage room temperature and/or the generation of smoke being detected, the buzzer activates an alarm and the lighthouse changes colour.
According to one possible embodiment, the building fire fighting unit is configured to be able to generate a building fire signal and in case of the building fire signal, the buzzer activates an alarm, the lighthouse changes color, and the test process unit stops the ongoing power battery test, blocks the new power battery test, shuts down the power supply of the power supply assembly.
According to a possible embodiment, the power cell laboratory safety system further comprises a human-machine interaction interface configured to enable an operator to interact with the power cell laboratory control system via the human-machine interaction interface.
The power battery laboratory safety technology has at least the following advantages: the high integration power battery laboratory for power battery test high automation and make things convenient for operating personnel to monitor the battery laboratory. When the power battery test process has abnormal conditions, the safety of experimental equipment and laboratory personnel can be guaranteed to the greatest extent, and more time is strived for the safe evacuation of the laboratory personnel when necessary.
Drawings
Fig. 1 schematically illustrates a power cell laboratory safety system according to an embodiment of the present application.
Detailed Description
Some possible embodiments of the present application are described below with reference to the drawings. It should be noted that the figures are not drawn to scale. Some details may be exaggerated for clarity and some details not necessarily shown may be omitted.
Referring to fig. 1, a power cell laboratory control system according to one embodiment of the present application is used to monitor a power cell laboratory located in a building.
The power battery laboratory control system comprises a central processing unit 1, a test process unit 2, a high-pressure water mist unit 3, a storage room monitoring unit 4, an accident fan unit 5 and a building fire-fighting unit 6, wherein the test process unit 2, the high-pressure water mist unit 3, the storage room monitoring unit 4, the accident fan unit 5 and the building fire-fighting unit 6 are connected to the central processing unit 1 respectively.
The central processing unit 1 is configured to be able to receive signal inputs, perform computational analysis on the input signals, and input signals to the outside.
The test process unit 2 is used to control the test process of the power cell 20.
The test process unit 2 is provided in a power cell laboratory, and may include a console 21 capable of starting and stopping a test, an environmental chamber 22 accommodating the power cell 20, a temperature control assembly (not shown) controlling the temperature of the environmental chamber 22, and a power supply assembly (not shown) for supplying power to the environmental chamber 22. A storage room is also provided in the building, in which a plurality of power batteries 20 are stored, i.e. the power batteries 20 to be tested are taken out of the storage room and placed in an environmental chamber 22 in a power battery laboratory.
The test procedure may include at least one test. Alternatively, the at least one test may be for the same power cell 20 or for different power cells 20. Alternatively, the at least one test may be performed in a single environmental chamber 22, or may be performed in multiple environmental chambers 22 simultaneously. Preferably, but not limitatively, the at least one test is preset (e.g. by a programming operation) and stored in a console, which can be started, adjusted and/or stopped under certain conditions (e.g. the operation of laboratory personnel).
The high-pressure water mist unit 3 is configured to spray a cooling and flame-retarding medium into the environmental chamber 22 in the form of high-pressure water mist under the condition that certain conditions are met, so as to reduce the temperature in the environmental chamber 22 and/or extinguish an open fire generated by accidental combustion of the battery 20.
The high pressure water mist unit 3 may comprise an air sampling assembly 31 for collecting the air quality in the environmental chamber 22, a nozzle 32, a pipe 33 for supplying high pressure water to the nozzle, and an electric tracing assembly 34 for tracing the pipe 33. The nozzles 32, piping 33, and electric trace assembly 34 are all disposed within the environmental chamber 22.
The electric trace heating assembly 34 is configured to maintain the temperature reducing fire-retarding medium in the high pressure water mist unit 3 in a fluid state even when the temperature of the environmental chamber 22 is very low (e.g., well below the freezing point of the temperature reducing fire-retarding medium), preventing it from freezing and clogging the pipes and/or nozzles of the high pressure water mist unit 3. The electrical trace assembly 34 may include an electrical trace strip that extends along the conduit 33 or wraps around the conduit 33.
A plurality of power cells 20 to be tested are stored in the storage compartment. The storage room monitoring unit 4 is configured to be able to monitor the temperature level and/or the smoke level of the storage room.
The emergency fan unit 5 is configured to provide air communication between the interior and the exterior of the laboratory under certain conditions, such as, for example, thermal runaway auto-ignition during power battery testing, to facilitate the escape of toxic fumes (if any) from the environmental chamber 22.
The building fire fighting unit 6 is configured to be located in a building in which the laboratory is located according to relevant legal regulations.
In one embodiment of the present application, the power cell laboratory control system further may include a lighthouse (not shown) in signal communication with the central processing unit 1.
Optionally, the power cell laboratory control system may further include a human-machine interface (not shown) in signal communication with the central processing unit 1, so that an operator can obtain information of the power cell laboratory control system and control the power cell laboratory control system.
Alternatively, the power cell laboratory control system may further comprise a buzzer (not shown) integrated in the central processing unit 1 or in signal communication with the central processing unit 1.
During use of the power cell laboratory safety system, when the high pressure water mist unit 3 detects the generation of smoke in the environmental chamber 22 and the smoke concentration reaches a first threshold value (also referred to as a pre-warning value), for example by means of an air sampling system, the high pressure water mist unit 3 generates a first smoke concentration signal (pre-warning signal), which is sent to the central processing unit 1 (preferably via dry contacts).
The first smoke concentration signal may be sent to a lighthouse, for example by the central processing unit 1. Upon receipt of the first smoke concentration signal, the lighthouse changes color, for example, to display a yellow light, to alert laboratory personnel of a low-to-medium risk condition for the power cell test. Laboratory personnel can perform appropriate actions in response thereto, such as verifying test details.
In addition, the first smoke concentration signal can be transmitted to the test process unit 2, for example by the central processing unit 1. The test process unit 2 receives the first smoke concentration signal, prevents a new power battery test from starting, and keeps the ongoing test executed according to a set program.
In addition, the first smoke concentration signal may be sent to the accident blower unit 5, for example by the central processing unit 1. The accident blower unit 5 is switched on in the event of receipt of the first smoke concentration signal so that smoke which may have leaked out of the environmental chamber 22 can be vented out of the laboratory to safeguard personnel in the laboratory.
In one embodiment, the first threshold may be preset to any suitable value; alternatively, the first threshold may be changed in any suitable case via a human-machine interface; alternatively, the first threshold may be set to indicate that there is little smoke in the environmental chamber 22 and that combustion of the power battery 20 has not occurred.
During use of the power cell laboratory control system, when the high pressure water mist unit 3 detects, for example by means of an air sampling system, that not only smoke is generated in the environmental chamber 22 but also that the smoke concentration reaches a second threshold value (also referred to as warning value, which is higher than the first threshold value), the high pressure water mist unit 3 generates a second smoke concentration signal (alarm signal), which is sent to the central processing unit 1 (preferably via dry contacts).
The second smoke concentration signal may be sent to a lighthouse, for example by the central processing unit 1. Upon receipt of the second smoke concentration signal, the lighthouse changes color, for example, displays a red light, to alert the tester that a high-risk condition has occurred with the power cell 20 under test. Laboratory personnel can perform corresponding operations accordingly, such as evacuation and risk avoidance, to minimize equipment loss and personnel injury.
In addition, a second smoke concentration signal can be sent to the test process unit 2, for example by the central processing unit 1. In case of receiving the second smoke concentration signal, the environmental chamber 22 and the temperature control system of the test process unit 2 are immediately closed, the power supply is closed, and the high-pressure water mist unit 3 sprays the temperature-reducing and flame-retardant medium into the environmental chamber 22.
In this way, equipment loss and tester safety hazards due to thermal runaway of the power cell 20 can be minimized.
In one embodiment, the second threshold may be preset to any suitable value above the first threshold; alternatively, the second threshold may be changed in any suitable case via a human-machine interface; alternatively, the second threshold may be set to indicate that thermal runaway of the power battery 20 within the environmental chamber 22 begins to burn and generate a large amount of smoke.
In the process of using the power battery laboratory control system, when the electric tracing assembly 34 of the high-pressure water mist unit 3 (e.g., subjected to a severe low temperature) malfunctions, the high-pressure water mist unit 3 generates and emits an electric tracing assembly malfunction signal (low-temperature malfunction signal), which is sent to the central processing unit 1.
The electrical trace heating assembly fault signal may be sent to the test process unit 2, for example, via the central processing unit 1. Upon receiving the electrical trace heating assembly fault signal, the test process unit 2 may adjust the temperature within the environmental chamber 22 to a safe temperature (e.g., 25 degrees celsius), stop all ongoing power battery tests, and prevent a new power battery test from beginning.
In this way, it is possible to prevent (for example, when the power battery 20 is tested in a sub-zero temperature environment) the pipes of the high-pressure water mist unit 3 from being heated due to the failure of the electric heat tracing assembly 34 of the high-pressure water mist unit 3, so that the temperature-reducing flame-retardant medium in the pipes is prevented from freezing, which may cause the following risks: under the extreme condition of thermal runaway combustion of the power battery, the temperature-reducing flame-retardant medium cannot be sprayed in the form of high-pressure water mist, so that equipment and personnel loss is caused.
In the process of using the power battery laboratory control system, the battery storage room is provided with a storage room monitoring unit 4 to detect the temperature and/or smoke of the storage room in real time. For example, if the battery 20 located in the storage room spontaneously ignites due to thermal runaway, resulting in an increase in the temperature of the storage room, for example, when the temperature exceeds a third threshold (e.g., 40 degrees celsius), the central processing unit 1 activates a buzzer, and the lighthouse changes color, for example, displays red light, to alert laboratory personnel of an abnormal condition in the storage room.
In this way, unexpected accidents that laboratory personnel may get into without knowing the storage room and possibly cause casualties can be avoided.
In the process of using the power cell laboratory control system, when the building fire fighting unit 6 detects a laboratory abnormality to generate a building fire fighting signal (fire pre-warning or fire warning signal), the building fire fighting signal is transmitted to the central processing unit 1.
The central processing unit 1 activates the buzzer and causes the lighthouse to change color, for example to display a red light, to indicate the evacuation of laboratory personnel to avoid danger.
In addition, building fire signals may be sent to the test process unit 2, for example, through the central processing unit 1. In case of receiving a building fire signal, the test process unit 2 stops all ongoing power battery tests, preventing a new power battery test from starting and the power supply from being switched off.
Through the mode, the power battery test is automatically stopped under the condition that the building where the laboratory is located has fire and other abnormal conditions, so that the condition that laboratory personnel manually close the test equipment and miss the risk avoiding time window is avoided.
The operation process of the power battery laboratory safety system at least comprises the following steps: in the event that smoke is detected to be generated within the environmental chamber 22 and the smoke concentration reaches a first threshold value, a first smoke concentration signal is generated and the following operations are performed in any order: lighthouses change color, e.g., show yellow light; the test process unit 2 sends out a command to prevent a new power battery test from starting and keeps the ongoing test executed according to a set program; the emergency fan unit 5 is activated to exhaust fumes that may leak out of the environmental chamber 22.
The environmental chamber 22 may be any applicable battery test environmental chamber known in the art. Optionally, the environmental chamber 22 has a volume in the range of 0.8-1.5m3To (c) to (d); optionally, the environmental chamber 22 has a volume in the range of 0.9-1.2m3E.g. about 1m3。
In one embodiment of the present application, the environmental chamber 22 includes a primary chamber door (not shown). The main hatch is connected to the side of the environmental chamber 22, for example by means of a hinge. During operation, the main compartment door is in a closed state, which is perpendicular to the side.
In one embodiment of the present application, air sampling assembly 31 may include: the system comprises a sampling host, a condenser, a dryer and a sampling pipe which are connected with each other. The sampling host may be disposed on a surface of the environmental chamber 22. The condenser is arranged below the sampling host. The dryer is arranged above the sampling host. The sampling tube is arranged to extend horizontally within the environmental chamber 22 and has a sampling port for taking a sample of air in the environmental chamber 22.
In one embodiment of the present application, the air sampling assembly 31 may further include: a detection tube positioned above the condenser and extending substantially horizontally; and the manual alarm comprises a high-pressure water mist manual trigger button and a smoke alarm manual trigger button which are arranged on the detection pipe side by side, and the high-pressure water mist manual trigger button and the smoke alarm manual trigger button are all electrically connected to the sampling host.
Various elements described in this application, if not specifically stated, may take any form known in the art and need not be described in detail.
Although the present application has been described herein with reference to particular embodiments, the scope of the present application is not intended to be limited to the details shown. Various modifications may be made to these details without departing from the underlying principles of the application.
Claims (10)
1. A power cell laboratory safety system comprising:
the system comprises a central processing unit (1), and a test process unit (2), a high-pressure water mist unit (3), a storage room monitoring unit (4), an accident fan unit (5) and a building fire-fighting unit (6) which are respectively connected to the central processing unit (1) and in signal communication with the central processing unit;
characterized in that the test procedure unit (2) is configured to be able to control a test procedure of the power cell (20) and comprises the following components: a console (21) configured to be able to control the start and stop of the power cell test; an environmental chamber (22) configured for housing a power battery for testing; a temperature control assembly configured to enable control of an ambient cabin temperature; and a power supply assembly configured to be able to supply power to components of the test process unit (2);
the high-pressure water mist unit (3) comprises a pipeline (33) and an electric tracing assembly (34) which is configured to trace heat to the pipeline (33), and the high-pressure water mist unit (3) is configured to be suitable for spraying a cooling flame-retardant medium into an environmental chamber in the form of high-pressure water mist;
wherein the central processing unit (1) comprises a buzzer and is configured to be connectable to a lighthouse and in signal communication with the lighthouse.
2. The power cell laboratory safety system according to claim 1, wherein the electric trace assembly (34) comprises an electric trace band extending along the conduit (33) or wrapped around the conduit (33).
3. The power cell laboratory safety system of claim 1,
the high-pressure water mist unit (3) comprises an air sampling assembly (31) configured to detect the concentration of smoke in the environmental chamber.
4. The power cell laboratory safety system according to claim 3, wherein the lighthouse is configured to emit different colors of light corresponding to the ambient cabin smoke concentration detected by the air sampling assembly (31).
5. The power cell laboratory safety system according to claim 4, characterized in that the high-pressure water mist unit (3) is configured to be activated to spray the temperature-reducing flame-retardant medium into the environmental chamber in case the smoke concentration in the environmental chamber detected by the air sampling assembly (31) reaches a second threshold value, wherein the second threshold value is higher than the first threshold value.
6. The power battery laboratory safety system according to claim 4, wherein the test process unit (2) is configured to shut down the environmental chamber (22) and the temperature control system, shut down the power supply of the power supply assembly, and activate the high pressure water mist unit (3) to spray the temperature-reducing and fire-retarding medium into the environmental chamber in case the smoke concentration in the environmental chamber detected by the air sampling assembly (31) reaches a second threshold value, wherein the second threshold value is higher than the first threshold value.
7. The power cell laboratory safety system according to any one of claims 1-6, wherein the high pressure water mist unit (3) is configured to be able to detect whether an electrical trace heat assembly (34) is malfunctioning; and is
The test process unit (2) is configured to set the temperature in the environmental chamber to a safe temperature in case of a failure of the electric trace assembly (34) and/or to stop an ongoing power cell test and/or to prevent the start of a new power cell test.
8. Power cell laboratory safety system according to any of claims 1-6, characterized in that the storage room monitoring unit (4) is configured to be able to detect storage room temperature and/or smoke and in case of detection of an abnormal increase in storage room temperature and/or the generation of smoke, a buzzer activates an alarm and the lighthouse changes color.
9. A power cell laboratory safety system according to any of the claims 1-6 characterized in that the building fire fighting unit (6) is configured to be able to generate a building fire signal and in case of building fire signal generation a buzzer activates an alarm, a lighthouse changes color and the test procedure unit (2) stops ongoing power cell tests, blocks new power cell tests, shuts down the power supply of the power supply assembly.
10. The power cell laboratory safety system according to any one of claims 1-6, further comprising a human-machine interface configured to enable an operator to interact with the power cell laboratory control system through the human-machine interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187134.6U CN212181315U (en) | 2020-06-23 | 2020-06-23 | Power battery laboratory safety coefficient |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187134.6U CN212181315U (en) | 2020-06-23 | 2020-06-23 | Power battery laboratory safety coefficient |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112947268A (en) * | 2021-01-25 | 2021-06-11 | 中国第一汽车股份有限公司 | Power battery test safety protection system, method and monitoring system |
| CN113835398A (en) * | 2020-06-23 | 2021-12-24 | 上海沃尔沃汽车研发有限公司 | Laboratory safety system and method for power battery |
| CN117406628A (en) * | 2023-11-17 | 2024-01-16 | 广州驰拓智能科技有限公司 | Laboratory ventilation control system based on sensing monitoring |
-
2020
- 2020-06-23 CN CN202021187134.6U patent/CN212181315U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113835398A (en) * | 2020-06-23 | 2021-12-24 | 上海沃尔沃汽车研发有限公司 | Laboratory safety system and method for power battery |
| CN112947268A (en) * | 2021-01-25 | 2021-06-11 | 中国第一汽车股份有限公司 | Power battery test safety protection system, method and monitoring system |
| CN117406628A (en) * | 2023-11-17 | 2024-01-16 | 广州驰拓智能科技有限公司 | Laboratory ventilation control system based on sensing monitoring |
| CN117406628B (en) * | 2023-11-17 | 2024-03-22 | 广州驰拓智能科技有限公司 | Laboratory ventilation control system based on sensing monitoring |
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