Thermal runaway early warning device for energy storage battery

Abstract

The utility model discloses an energy storage battery thermal runaway early warning device, which relates to the technical field of battery early warning protection, and comprises a shell and an early warning assembly, the shell is provided with an air inlet and an air outlet, the early warning assembly comprises two baffles which are both movably arranged on the inner side of the shell, and the two baffles respectively cover the air inlet and the air outlet. Ventilation openings which can be communicated with the corresponding air inlets or air outlets are formed in the baffles, and the hole diameter of the air inlets is larger than that of the ventilation openings in the corresponding baffles; the early warning assembly further comprises two sets of electric push rods arranged in the shell, and the two baffles are fixedly arranged on piston rods of the corresponding electric push rods respectively. Through the arrangement of the air inlet, the air outlet and the two corresponding baffles, when the temperature of the battery in the shell is abnormal, the two baffles can open the air inlet and the air outlet, so that external air enters the shell from the air inlet, absorbs heat around the battery and then is exhausted from the air outlet, and the heat dissipation and cooling effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery early warning protection, and in particular to a thermal runaway early warning device for an energy storage battery. Background Art

[0002] Energy storage batteries are devices that can convert electrical energy into chemical energy and store it for a long time. When needed, they can convert the stored energy back into electrical energy to supply external devices or systems. Energy storage batteries are widely used in power grid energy storage, renewable energy integration, emergency backup power supplies, electric vehicles and other fields. During the charging or discharging process of energy storage batteries, abnormal conditions may cause the temperature of the energy storage batteries to rise abnormally, which may cause fire or explosion. Therefore, it is necessary to predict the possibility of thermal runaway of the battery.

[0003] After searching, the patent document with the authorization announcement number CN219998321 U discloses a thermal runaway warning device for energy storage batteries, which includes a battery housing, a spring rod No. 1 fixedly connected to the inside of the mounting plate, a spring rod No. 2 fixedly connected to the inner wall of the mounting plate, an air regulating plate movably installed inside the battery box, and a buzzer alarm fixedly connected to the outside of the temperature sensor. The thermal runaway warning device for energy storage batteries places the battery housing on the mounting plate, rotates the adjusting cone rod through two bevel gear rotating rods to make the two threaded cone rods rotate in a mirror image, drives the two mounting plates to move in opposite directions to adjust the spacing, connects the sponge pad to the spring on the spring rod through the connecting block and the hinge block respectively, uses the spring elastic deformation to reduce shock and unload force, rotates the air regulating plate to adjust the wind speed to accelerate the heat dissipation of the battery, and the temperature sensor monitors the temperature and controls the buzzer alarm to warn, thereby achieving the effect of assisting the heat dissipation of the battery and providing shock-absorbing support for the battery.

[0004] During the use of the above device, when the temperature of the energy storage battery is high, a buzzer alarm will be triggered to warn the staff to come for processing. The staff can then turn the angle of the air regulating plate to allow the outside air to quickly circulate inside the battery casing to dissipate heat and cool the battery. During this early warning process, the staff is required to manually drive the air regulating plate to rotate. If the staff does not come for processing for a long time, the air regulating plate will always block the battery casing, and the outside air will not be able to enter the battery casing. As a result, the temperature inside the battery casing will rise, which can easily lead to thermal runaway of the battery. Even if the battery casing is equipped with heat dissipation components such as heat sinks, it is impossible to quickly dissipate heat and cool the high-temperature battery and the inside of the closed battery casing.

[0005] To this end, we propose a new thermal runaway warning device for energy storage batteries to quickly dissipate heat and cool down batteries that have high temperatures. Utility Model Content

[0006] The purpose of the utility model is to solve the problems in the prior art and to propose a thermal runaway warning device for an energy storage battery. The warning device is intended to construct a hardware platform so that after the battery temperature rises abnormally, the hardware platform can be used to quickly dissipate heat and cool the battery to prevent thermal runaway of the battery.

[0007] In order to solve the above problems, the utility model provides the following technical solutions:

[0008] A thermal runaway warning device for an energy storage battery comprises a shell for loading the battery and a warning component, wherein the shell is provided with an air inlet and an air outlet, the warning component comprises two baffles which are both movably arranged on the inner side of the shell, and the two baffles respectively cover the air inlet and the air outlet, the baffles are provided with vents which can be communicated with the corresponding air inlet or the air outlet, and the aperture of the air inlet is larger than the aperture of the vent on the corresponding baffle; the warning component also comprises two groups of electric push rods arranged inside the shell, and the two baffles are respectively fixedly arranged on the piston rods of the corresponding electric push rods.

[0009] Under normal circumstances, the two baffles cover the corresponding air inlet and air outlet respectively, and the upper cover of the shell is provided with a protective cover. The entire shell is in a well-closed state, which can play a good role in dust prevention and other functions. The shell dissipates heat through normal heat dissipation methods; when the battery temperature inside the shell is high, the two sets of electric push rods in the early warning component can work at this time, driving the two baffles to open the air inlet and air outlet, so that the inside of the shell is quickly connected to the outside world, playing a role in rapid heat dissipation and cooling. At the same time, the aperture of the air inlet is set larger than the aperture of the vent on the corresponding baffle, which can make the temperature of the air from the outside world gradually decrease through the air inlet and vent in turn, and then the temperature flowing into the shell will be lower, which improves the effect of heat dissipation and cooling.

[0010] As a further solution of the utility model: the air inlet and the air outlet are respectively arranged on two opposite sides of the shell, and the two baffles are respectively located on the inner walls of the two opposite sides, and the battery is located between the air inlet and the air outlet.

[0011] In the above, the air inlet and the air outlet are arranged relatively so that the air inlet and the air outlet are located at opposite sides of the shell, so as to better promote the air circulation between the outside and the inside of the shell and facilitate the air to take away more heat.

[0012] As a further solution of the utility model: the air inlet, the air outlet and the ventilation opening are all arranged in plurality, and the plurality of air inlets, the plurality of air outlets and the plurality of ventilation openings are distributed in a circular circumferential array.

[0013] In the above, by providing multiple air inlets, air outlets and vents, the heat dissipation and cooling effect can be further improved.

[0014] As a further solution of the utility model: the early warning component also includes a heat dissipation fan fixedly arranged on the outside of the shell, and the heat dissipation fan is located on the periphery of the air inlet.

[0015] The above-mentioned arrangement of the heat dissipation fan can speed up the rate at which the outside air flows into the interior of the housing.

[0016] As a further solution of the utility model: the early warning component also includes a controller arranged on the shell and a temperature sensor arranged inside the shell, the electric push rod, the cooling fan and the temperature sensor are all electrically connected to the controller, and the electric push rod and the cooling fan are both controlled by the controller.

[0017] The setting of the above controller can logically control the temperature sensor, electric push rod and cooling fan, so that when the temperature inside the shell reaches the set threshold, the electric push rod can drive the baffle to perform the required movement to open the air inlet and exhaust vent.

[0018] As a further solution of the utility model: the warning component also includes a warning part arranged on the shell, and the warning part is electrically connected to the controller and controlled by the controller.

[0019] In the above process of opening the air inlet and the air outlet, the early warning component can remind the staff to handle it.

[0020] As a further solution of the utility model: the warning component is configured as a buzzer and / or an alarm light.

[0021] The sound of a buzzer and the flashing of an alarm light can be used to alert personnel.

[0022] As a further solution of the utility model: the piston rod of the electric push rod and the baffle are switched through a frame body movably arranged inside the shell.

[0023] The adapter plate mentioned above serves the function of connecting the electric push rod and the baffle.

[0024] As a further solution of the utility model: a plurality of heat sinks are arranged on the shell.

[0025] When the shell is in a closed state, the plurality of heat sinks can be used to perform normal heat dissipation work.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] 1. Through the setting of the air inlet, the air outlet and the two corresponding baffles, when the battery temperature inside the shell is abnormal, the two baffles will open the air inlet and the air outlet, so that the outside air enters the shell through the air inlet, and then absorbs the heat around the battery and is discharged from the air outlet, thereby achieving the effect of heat dissipation and cooling; at the same time, the aperture of the air inlet is set to be larger than the aperture of the vent on the corresponding baffle, so that when the outside air enters the shell through the air inlet and the vent in turn, the temperature of the air inside the vent is lower than the air temperature inside the air inlet, that is, the temperature of the air entering the shell is lower than the outside air temperature, which can further provide the effect of heat dissipation and cooling.

[0028] 2. Through the setting of temperature sensors and controllers, the temperature sensors, electric push rods, cooling fans and controllers form a logical control, so that the two baffles can automatically open and close the air inlet and exhaust vents, thereby improving the rapidity of heat dissipation and cooling.

[0029] 3. Through the setting of early warning parts, when the temperature sensor signal value exceeds the threshold, the controller can start the buzzer and alarm light. At this time, the buzzer sounds and the alarm light flashes to remind the staff to come and deal with it. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described below in conjunction with the accompanying drawings.

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a partial cross-sectional view of the utility model. Figure 1 ;

[0033] Figure 3 This is a partial cross-sectional view of the utility model. Figure 2 ;

[0034] Figure 4 It is a schematic diagram of the overall structure of the shell of the utility model.

[0035] In the figure: 1. Shell; 2. Air inlet; 3. Air outlet; 4. Temperature sensor; 5. Controller; 6. Electric push rod; 7. Baffle; 8. Cooling fan; 9. Frame; 10. Heat sink; 11. Ventilation port; a. Battery. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1-Figure 4 As shown, a thermal runaway warning device for an energy storage battery comprises a shell 1 for loading a battery a and a warning component, the shell 1 is provided with an air inlet 2 and an air outlet 3, the warning component comprises two baffles 7 both movably arranged on the inner side of the shell 1, and the two baffles 7 respectively cover the air inlet 2 and the air outlet 3, the baffle 7 is provided with a vent 11 which can be communicated with the corresponding air inlet 2 or the air outlet 3, and the aperture of the air inlet 2 is larger than the aperture of the vent 11 on the corresponding baffle 7; the warning component also comprises two groups of electric push rods 6 arranged inside the shell 1, and the two baffles 7 are respectively fixedly arranged on the piston rods of the corresponding electric push rods 6; preferably, the piston rod of the electric push rod 6 and the baffle 7 are switched through a frame 9 movably arranged inside the shell 1.

[0038] The shell 1 is provided with a conventional heat dissipation method, for example, a plurality of heat sinks 10 are provided on the shell 1. Under normal circumstances, the protective cover on the shell 1 is in a closed state, and the battery a is working normally. When the temperature of the battery a is too high and the heat sink 10 is not able to dissipate heat in time, the two sets of electric push rods 6 are actuated, and then the two baffles 7 are driven to open the air inlet 2 and the air outlet 3 respectively, and the outside air can enter the shell 1 through the air inlet 2, and then be discharged from the air outlet 3 after absorbing the heat inside the shell 1, thereby playing a role in heat dissipation. It should be noted that in the above, the aperture of the air inlet 2 is larger than the aperture of the vent 11 on the corresponding baffle 7, and then in the process of the outside air passing through the air inlet 2 and the vent 11 to enter the shell 1 in sequence, the temperature of the air inside the vent 11 is lower than the air temperature inside the air inlet 2, that is, the temperature of the air entering the shell 1 is lower than the outside air temperature, and then the heat dissipation and cooling effect can be further provided.

[0039] like Figure 1-Figure 3 As shown, in order to prevent the outside air from absorbing less heat during the process of entering from the air inlet 2 and being discharged from the air outlet 3, the air inlet 2 and the air outlet 3 are respectively arranged on two opposite sides of the shell 1, and the two baffles 7 are respectively located on the inner walls of the two opposite sides, and the battery a is arranged between the air inlet 2 and the air outlet 3, so that the inside of the shell 1 can be filled with the outside air entering from the air inlet 2 and discharged from the air outlet 3.

[0040] like Figure 2As shown, further, in order to increase the amount of outside air entering the shell 1 per unit time, the air inlet 2, the air outlet 3 and the vent 11 are all set to be multiple, and the multiple air inlets 2, the multiple air outlets 3 and the multiple vents 11 are all distributed in a circular circumferential array. At the same time, a heat dissipation fan 8 is fixedly arranged on the outside of the shell 1, and the heat dissipation fan 8 is located at the periphery of the air inlet 2, and then when the air inlet 2 is opened, the heat dissipation fan 8 also works, which can quickly guide the outside air to the inside of the shell 1, and play a role in rapid heat dissipation.

[0041] like Figure 2-Figure 3 As shown, in order to automatically work the two baffles 7, the above-mentioned early warning assembly is set in this embodiment and also includes a controller 5 arranged on the housing 1 and a temperature sensor 4 arranged inside the housing 1. The electric push rod 6, the cooling fan 8 and the temperature sensor 4 are all electrically connected to the controller 5, and the electric push rod 6 and the cooling fan 8 are all controlled by the controller 5. By performing logical control between the electric push rod 6, the cooling fan 8, the temperature sensor 4 and the controller 5, when the temperature inside the housing 1 sensed by the temperature sensor 4 exceeds the set threshold, the controller 5 will simultaneously start the cooling fan 8 and the two sets of electric push rods 6, and the rotation of the cooling fan 8 drives the outside air to quickly enter the housing 1. The work of the two sets of electric push rods 6 can open the air inlet 2 and the air outlet 3. Through the above-mentioned setting, when the temperature of the battery a is abnormal, the air inlet 2, the air outlet 3 and the cooling fan 8 can be automatically opened to perform heat dissipation and cooling treatment. It should be noted that the controller 5 in this embodiment is a conventional technical means in the prior art, such as a single-chip microcomputer.

[0042] On the basis of the above logic control, in order to remind the staff that the temperature of the battery a inside the housing 1 is abnormal, the early warning component can be set to also include an early warning part (not shown in the figure) set on the housing 1, and the early warning part is electrically connected to the controller 5 and controlled by the controller 5. Specifically, the early warning part is set as a buzzer or an alarm light, or a combination of the two. Taking the simultaneous setting of the buzzer and the alarm light as an example, when the signal value of the temperature sensor 4 exceeds the threshold, the controller 5 can start the buzzer and the alarm light, at which time the buzzer sounds and the alarm light flashes, thereby reminding the staff to come and handle it.

[0043] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A thermal runaway warning device for an energy storage battery, characterized in that: The invention comprises a shell (1) for loading a battery (a) and an early warning component, wherein the shell (1) is provided with an air inlet (2) and an air outlet (3), and the early warning component comprises two baffles (7) both movably arranged on the inner side of the shell (1), and the two baffles (7) respectively cover the air inlet (2) and the air outlet (3), and the baffles (7) are provided with a vent (11) which can be connected to the corresponding air inlet (2) or the air outlet (3), and the aperture of the air inlet (2) is larger than the aperture of the vent (11) on the corresponding baffle (7); the early warning component also comprises two groups of electric push rods (6) arranged inside the shell (1), and the two baffles (7) are respectively fixedly arranged on the piston rods of the corresponding electric push rods (6).

2. The thermal runaway warning device for energy storage batteries according to claim 1, characterized in that: The air inlet (2) and the air outlet (3) are respectively arranged on two opposite sides of the shell (1), and the two baffles (7) are respectively located on the inner walls of the two opposite sides, and the battery (a) is located between the air inlet (2) and the air outlet (3).

3. The thermal runaway warning device for energy storage batteries according to claim 2, characterized in that: The air inlet (2), the air outlet (3) and the ventilation opening (11) are all arranged in a plurality, and the plurality of air inlets (2), the plurality of air outlets (3) and the plurality of ventilation openings (11) are all distributed in a circular circumferential array.

4. A thermal runaway warning device for an energy storage battery according to any one of claims 1 to 3, characterized in that: The early warning component also includes a heat dissipation fan (8) fixedly arranged on the outside of the housing (1), and the heat dissipation fan (8) is located outside the air inlet (2).

5. The thermal runaway warning device for energy storage batteries according to claim 4, characterized in that: The early warning component also includes a controller (5) arranged on the shell (1) and a temperature sensor (4) arranged inside the shell (1); the electric push rod (6), the cooling fan (8) and the temperature sensor (4) are all electrically connected to the controller (5), and the electric push rod (6) and the cooling fan (8) are both controlled by the controller (5).

6. The thermal runaway warning device for energy storage batteries according to claim 5, characterized in that: The warning component also includes a warning component arranged on the housing (1), and the warning component is electrically connected to the controller (5) and is controlled by the controller (5).

7. The thermal runaway warning device for energy storage batteries according to claim 6, characterized in that: The warning element is configured as a buzzer and / or an alarm light.

8. The thermal runaway warning device for energy storage batteries according to claim 7, characterized in that: The piston rod of the electric push rod (6) and the baffle plate (7) are switched via a frame (9) movably arranged inside the housing (1).

9. A thermal runaway warning device for an energy storage battery according to any one of claims 1 to 3, characterized in that: A plurality of heat sinks (10) are arranged on the housing (1).

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