Explosion-proof battery over-charge and over-discharge safety test box

Abstract

The utility model relates to the technical field of battery safety detection equipment, in particular to an anti-explosion battery over-charge and over-discharge safety test box which comprises a box body and a box door, the box body is composed of three layers of composite anti-explosion structures, and the three layers of composite anti-explosion structures are a high-temperature-resistant insulating coating, a honeycomb ceramic anti-explosion layer and a stainless steel reinforcing layer in sequence from inside to outside. A sliding rail is arranged on the inner wall of the box body, a placing table is fixedly arranged on the sliding rail, and a plurality of battery bins are formed on the placing table. The perfluorohexanone fire extinguisher overcomes the defects in the prior art, a charging and discharging program is set through the control panel, when the temperature sensor detects that the temperature of any battery monomer is higher than 80 DEG C, power supply of the bin is automatically cut off, and after the flame detector is triggered, the central control unit opens the electromagnetic valve, so that perfluorohexanone in the perfluorohexanone fire extinguisher is sprayed out through the fire extinguishing spray head; and after fire extinguishing treatment, the central control unit starts the exhaust fan, so that a negative pressure area is formed between the partition plate and the exhaust fan, and smoke generated by battery explosion is exhausted.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery safety detection equipment technical field, concretely is a kind of explosion-proof battery overcharge overdischarge safety test box. BACKGROUND

[0002] Overcharge overdischarge test is an important part of battery safety test, overcharge refers to the charging voltage of lithium ion battery exceeds the voltage set, possibly leading to battery explosion, combustion and other hidden dangers, overdischarge refers to the voltage reaches rated voltage when discharging continues to discharge, possibly causing catastrophic consequences to battery, especially large current overdischarge or repeated overdischarge, but there is explosion risk in the test process;

[0003] The battery overcharge / overdischarge test equipment in prior art has insufficient explosion-proof performance of test box body, is easy to cause secondary accident when battery thermal runaway and lacks multi-level safety protection mechanism, cannot effectively inhibit explosion shock wave and flame diffusion;

[0004] To solve the above technical problems, a kind of explosion-proof battery overcharge overdischarge safety test box is proposed. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides an explosion-proof battery overcharge overdischarge safety test box, which overcomes the deficiencies of the prior art and solves the problems mentioned in the background.

[0006] To achieve the above object, the utility model provides the following technical scheme: an explosion-proof battery overcharge overdischarge safety test box, comprising a box body and a door, the box body is composed of three layers of composite explosion-proof structure, from inside to outside, it is high-temperature resistant insulating coating, honeycomb ceramic explosion-proof layer and stainless steel reinforcing layer in proper order;

[0007] The inner wall of the box body is provided with a slide rail, and a placing table is fixedly installed on the slide rail.

[0008] The box body is provided with a positive fire extinguishing device and a monitoring unit.

[0009] The locking state of the electromagnetic interlocking device on the door is released through the control panel, then the placing table is pulled out along the slide rail, then the battery to be tested is loaded into the battery compartment, fixed by spring pressure explosion-proof electrode interface, the charging and discharging program is set through the control panel, when the temperature sensor detects that the temperature of any battery cell is greater than 80 DEG C, the power supply of the compartment is automatically cut off, after the flame detector is triggered, the central control unit opens the electromagnetic valve, so that the perfluorohexone in the perfluorohexone fire extinguisher is sprayed out through the fire extinguishing nozzle, to realize fire extinguishing treatment, after fire extinguishing treatment, the central control unit opens the exhaust fan, to form a negative pressure area between the partition and the exhaust fan, and the smoke generated by battery explosion is discharged.

[0010] As an improved technical scheme of the utility model, the surface of the box door is fixedly installed with an explosion-proof observation window, the outer surface of the box door on one side of the explosion-proof observation window is configured and installed with a control panel, a central control unit is built-in on the control panel, and an electromagnetic interlocking device is arranged between the box door and the box body and is signal-connected with the central control unit.

[0011] The explosion-proof observation window can be used to intuitively understand the test condition of the internal battery, the electromagnetic interlocking device is signal-connected with the central control unit, when the test program is started or the pressure in the box exceeds the limit, the electromagnetic interlocking device is automatically locked, and the locked state can be released only after identity verification or emergency stop reset.

[0012] As an improved technical scheme of the utility model, the surface of the box door is fixedly installed with an explosion-proof observation window, the outer surface of the box door on one side of the explosion-proof observation window is configured and installed with a control panel, a central control unit is built-in on the control panel, and an electromagnetic interlocking device is arranged between the box door and the box body and is signal-connected with the central control unit.

[0013] The explosion-proof observation window can be used to intuitively understand the test condition of the internal battery, the electromagnetic interlocking device is signal-connected with the central control unit, when the test program is started or the pressure in the box exceeds the limit, the electromagnetic interlocking device is automatically locked, and the locked state can be released only after identity verification or emergency stop reset.

[0014] As an improved technical scheme of the utility model, the surface of the box door is fixedly installed with an explosion-proof observation window, the outer surface of the box door on one side of the explosion-proof observation window is configured and installed with a control panel, a central control unit is built-in on the control panel, and an electromagnetic interlocking device is arranged between the box door and the box body and is signal-connected with the central control unit.

[0015] When the flame detector detects the battery fire condition, the central control unit will control the electromagnetic valve to open, so that the extinguishing agent in the perfluorohexanone extinguisher is discharged through the fire extinguishing nozzle to extinguish the battery compartment on fire.

[0016] As an improved technical scheme of the utility model, the surface of the box door is fixedly installed with an explosion-proof observation window, the outer surface of the box door on one side of the explosion-proof observation window is configured and installed with a control panel, a central control unit is built-in on the control panel, and an electromagnetic interlocking device is arranged between the box door and the box body and is signal-connected with the central control unit.

[0017] The flame detector can detect the open fire of the battery in the battery compartment below, and feedback to the central control unit for subsequent processing when the battery appears open fire.

[0018] As an improved technical scheme of the utility model, the surface of the box door is fixedly installed with an explosion-proof observation window, the outer surface of the box door on one side of the explosion-proof observation window is configured and installed with a control panel, a central control unit is built-in on the control panel, and an electromagnetic interlocking device is arranged between the box door and the box body and is signal-connected with the central control unit.

[0019] The exhaust fan is started to form a negative pressure guide channel between the partition plate and the exhaust fan, and is connected with the external exhaust pipe.

[0020] As a preferred technical scheme of the utility model, the box is fixedly installed with a pressure relief valve at one end away from the perfluorocyclohexanone fire extinguisher.

[0021] The pressure relief valve can be automatically opened when the internal pressure of the box is greater than a preset threshold.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] When the temperature sensor detects that any battery monomer temperature is greater than 80 DEG C, the power supply of the bin is automatically cut off, after the flame detector is triggered, the central control unit opens the electromagnetic valve, so that the perfluorocyclohexanone in the perfluorocyclohexanone fire extinguisher is sprayed out through the fire extinguishing nozzle, fire extinguishing treatment is realized, after the fire extinguishing treatment, the central control unit opens the exhaust fan, so that a negative pressure area is formed between the partition plate and the exhaust fan, and the smoke generated by the battery explosion is discharged. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic view of the utility model Figure 1 ;

[0025] Figure 2 It is a three-dimensional schematic view of the utility model Figure 2 ;

[0026] Figure 3 It is a three-dimensional schematic view of the utility model

[0027] Figure 4 It is a three-dimensional schematic view of the utility model Figure 1 ;

[0028] Figure 5 It is a three-dimensional schematic view of the utility model Figure 2 ;

[0029] Figure 6 It is a three-dimensional schematic view of the utility model

[0030] Figure 7 It is a three-dimensional schematic view of the utility model Figure 6 A-A cross-sectional view schematic diagram;

[0031] Figure 8 It is a three-dimensional schematic view of the utility model Figure 3 A local enlarged schematic view.

[0032] In the figure: 1, stainless steel reinforcing layer; 2, honeycomb ceramic explosion-proof layer; 3, high-temperature-resistant insulation coating; 4, box door; 5, explosion-proof observation window; 6, control panel; 7, perfluorocyclohexanone fire extinguisher; 8, electromagnetic valve; 9, exhaust fan; 10, sliding rail; 11, placement table; 12, battery compartment; 13, spring-pressurized explosion-proof electrode interface; 14, temperature sensor; 15, voltage detection module; 16, charge and discharge controller; 17, flame detector; 18, fire extinguishing nozzle; 19, partition; 20, flow guide chamber; 21, pressure relief valve; 22, electromagnetic interlocking device. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0034] Please refer to Figures 1-8 An explosion-proof battery overcharge and overdischarge safety test box, comprising a box body and a box door 4, the box body is composed of a three-layer composite explosion-proof structure, from inside to outside, it is high-temperature-resistant insulation coating 3, honeycomb ceramic explosion-proof layer 2 and stainless steel reinforcing layer 1 in proper order, the inner wall of the box body is configured and installed with sliding rail 10, the sliding rail 10 is fixedly installed with placement table 11, the placement table 11 is formed with a plurality of battery compartments 12, the box body is provided with active fire extinguishing device and monitoring unit, the locking state of the box door 4 by electromagnetic interlocking device 22 is removed through control panel 6, then the placement table 11 is pulled out along the sliding rail 10, then the battery to be tested is loaded into the battery compartment 12, fixed through spring-pressurized explosion-proof electrode interface 13, the charge and discharge program is set through control panel 6, when the temperature sensor 14 detects that the temperature of any battery monomer is greater than 80 DEG C, the power supply of the compartment is automatically cut off, after the flame detector 17 triggers, the central control unit opens the electromagnetic valve 8, so that the perfluorocyclohexanone in the perfluorocyclohexanone fire extinguisher 7 is sprayed through the fire extinguishing nozzle 18, realizes fire extinguishing treatment, after fire extinguishing treatment, the central control unit opens the exhaust fan 9, so that the partition 19 and the exhaust fan 9 form a negative pressure area, and the smoke generated by the explosion of the battery is discharged.

[0035] Specifically, the surface of the box door 4 is fixedly installed with an explosion-proof observation window 5, and the outer surface of the box door 4 on one side of the explosion-proof observation window 5 is configured and installed with a control panel 6. The control panel 6 is internally provided with a central control unit. An electromagnetic interlocking device 22 is arranged between the box door 4 and the box body and is signal-connected with the central control unit. The inside of the box body can be directly observed from the outside through the explosion-proof observation window 5 to understand the test condition of the battery inside. The electromagnetic interlocking device 22 is signal-connected with the central control unit. When the test program is started or the pressure in the box exceeds the limit, the electromagnetic interlocking device automatically locks the box door, and the locking state can be released only after identity verification or emergency stop reset.

[0036] Specifically, the inner wall of the battery compartment 12 is configured and installed with a spring-pressurized explosion-proof electrode interface 13. The bottom surface of the inner wall of the battery compartment 12 is fixedly installed with a temperature sensor 14. The outer surface of one end of the battery compartment 12 is fixedly installed with a voltage detection module 15. The outer surface of the other end of the battery compartment 12 is configured and installed with a charge and discharge controller 16. The spring-pressurized explosion-proof electrode interface 13 can be quickly connected with the test battery for overcharge and overdischarge test. The temperature sensor 14 can be attached to the surface of the battery installed in the battery compartment 12 to obtain the temperature of the battery. The voltage detection module 15 is used to obtain the true potential difference of the battery.

[0037] Specifically, the active fire extinguishing device includes a perfluorohexone extinguisher 7 fixedly installed on the outer surface of the box body, an electromagnetic valve 8 configured and installed on the output end of the perfluorohexone extinguisher 7, and a fire extinguishing nozzle 18 fixedly installed above the battery compartment 12. The perfluorohexone extinguisher 7 is connected with the fire extinguishing nozzle 18 through a connecting pipe. When the fire detector 17 detects a fire condition of the battery, the central control unit will control the electromagnetic valve 8 to open, so that the fire extinguishing agent in the perfluorohexone extinguisher 7 is discharged through the fire extinguishing nozzle 18 to extinguish the fire of the battery compartment 12.

[0038] Specifically, the monitoring unit is composed of a fire detector 17. The fire detector 17 is fixedly installed directly above the battery compartment 12. The fire detector 17 can detect open fire of the battery in the battery compartment 12 directly below. When the battery has open fire, it feeds back to the central control unit for subsequent processing.

[0039] Specifically, the box body is configured and installed with an exhaust fan 9 away from the box door 4. The exhaust fan 9 is externally connected with an exhaust pipe at the air outlet. A partition plate 19 is arranged between the exhaust fan 9 and the placement table 11. A flow guide chamber 20 is formed between the partition plate 19 and the exhaust fan 9. Starting the exhaust fan 9 can form a negative pressure flow guide channel between the partition plate 19 and the exhaust fan 9, and the negative pressure flow guide channel is connected with the external exhaust pipe.

[0040] Specifically, a pressure relief valve 21 is fixedly installed at one end of the box body away from the perfluorohexone extinguisher 7. The pressure relief valve 21 can automatically open when the internal pressure of the box body is greater than a preset threshold.

[0041] Working principle: the locking state of the electromagnetic interlocking device 22 to the box door 4 is released through the operation panel 6, then the placing table 11 is pulled out along the slide rail 10, then the battery to be tested is loaded into the battery compartment 12, fixed through the spring-pressing explosion-proof electrode interface 13, the charging and discharging program is set through the operation panel 6, when the temperature sensor 14 detects that the temperature of any battery monomer is greater than 80 DEG C, the power supply of the compartment is automatically cut off, after the fire detector 17 is triggered, the central control unit opens the electromagnetic valve 8, so that the perfluorocyclohexanone in the perfluorocyclohexanone extinguisher 7 is sprayed out through the fire extinguishing nozzle 18, the fire extinguishing treatment is realized, after the fire extinguishing treatment, the central control unit opens the exhaust fan 9, so that the negative pressure area is formed between the baffle 19 and the exhaust fan 9, the smoke generated by the explosion of the battery is exhausted.

[0042] Finally, it should be pointed out that in the description of the utility model, it should be pointed out that the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0043] In the description of the utility model, it should also be pointed out that unless otherwise specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0044] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A safety test chamber for overcharge and over-discharge of explosion-proof batteries, comprising a chamber body and a door (4), characterized in that: The enclosure is composed of a three-layer composite explosion-proof structure, consisting of a high-temperature resistant insulating coating (3), a honeycomb ceramic explosion-proof layer (2), and a stainless steel reinforcing layer (1) from the inside out. The inner wall of the box is equipped with a slide rail (10), and a placement platform (11) is fixedly installed on the slide rail (10). Several battery compartments (12) are formed on the placement platform (11). The enclosure is equipped with an active fire extinguishing device and a monitoring unit.

2. The explosion-proof battery overcharge and over-discharge safety test chamber according to claim 1, characterized in that: An explosion-proof observation window (5) is fixedly installed on the surface of the box door (4). A control panel (6) is installed on the outer surface of the box door (4) on one side of the explosion-proof observation window (5). A central control unit is built into the control panel (6). An electromagnetic interlock device (22) is provided between the box door (4) and the box body and is connected to the central control unit.

3. The explosion-proof battery overcharge and over-discharge safety test chamber according to claim 1, characterized in that: The inner wall of the battery compartment (12) is equipped with a spring-pressurized explosion-proof electrode interface (13), a temperature sensor (14) is fixedly installed on the bottom surface of the inner wall of the battery compartment (12), a voltage detection module (15) is fixedly installed on the outer surface of one end of the battery compartment (12), and a charge / discharge controller (16) is installed on the outer surface of the other end of the battery compartment (12).

4. The explosion-proof battery overcharge and over-discharge safety test chamber according to claim 1, characterized in that: The active fire extinguishing device includes a perfluorohexanone fire extinguisher (7) fixedly installed on the outer surface of the box, a solenoid valve (8) configured and installed at the output end of the perfluorohexanone fire extinguisher (7), and a fire extinguishing nozzle (18) fixedly installed above the battery compartment (12). The perfluorohexanone fire extinguisher (7) is connected to the fire extinguishing nozzle (18) through a connecting pipe.

5. The explosion-proof battery overcharge and over-discharge safety test chamber according to claim 1, characterized in that: The monitoring unit consists of a flame detector (17), which is fixedly installed above the battery compartment (12).

6. The explosion-proof battery overcharge and over-discharge safety test chamber according to claim 1, characterized in that: An exhaust fan (9) is installed on the side of the box away from the door (4). An exhaust pipe is connected to the air outlet of the exhaust fan (9). A partition (19) is provided between the exhaust fan (9) and the placement platform (11). A flow guide chamber (20) is formed between the partition (19) and the exhaust fan (9).

7. The explosion-proof battery overcharge and over-discharge safety test chamber according to claim 1, characterized in that: A pressure relief valve (21) is fixedly installed at the end of the box away from the perfluorohexanone fire extinguisher (7).

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