A simple alarm device for abnormal temperature rise in a lithium battery box and a cooling method thereof

Abstract

The present invention discloses a simple alarm device for abnormal temperature rise in a lithium battery box and a cooling method thereof, comprising a shell, a battery is placed inside the shell, a normally open metal temperature control switch is installed on the top of the battery, a buzzer is installed on the top of the shell, a battery electrode is provided on the top of the battery, and an insulating heat-insulating layer is filled between the shell and the battery. The normally open metal temperature control switch of the present invention monitors the battery temperature. When the temperature is too high, the normally open metal temperature control switch is closed, so that the circuit connected to the buzzer is turned on, thereby making the buzzer sound. The device can realize a simple and rapid alarm function for thermal disasters inside the lithium battery box, warn users that the battery temperature is too high, avoid safety hazards caused by high-temperature use of the battery, make battery use safer, ensure the initiative and rapidity of abnormal temperature rise alarm in the lithium battery box, have strong scalability, can be widely used in lithium battery boxes in various scenarios, and is simple, flexible and easy to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a simple alarm device for abnormal temperature rise in a lithium battery box and a cooling method thereof. Background Art

[0002] With the promotion and application of lithium battery-powered vehicles and electric bicycles in my country, the thermal runaway and fire safety issues of lithium batteries have received widespread attention. Due to the characteristics of lithium batteries such as highly active chemical components and high energy density, they are easily triggered by electrical, thermal, mechanical and other abuse methods, which can easily induce thermal runaway and fire. If the early warning alarm is not timely, it will pose a serious threat to the safety of people and surrounding vehicles. At present, the battery management system inside the battery box of electric vehicles on the market can monitor the battery temperature and voltage.

[0003] However, the current monitoring of battery temperature requires an external monitoring and early warning device to realize the alarm function. There are also special alarm devices that integrate electrochemical, temperature, characteristic gas and other signals, but the system is highly complex, costly and difficult to maintain. In addition, for electric bicycle battery boxes, there is a lack of corresponding thermal runaway and fire monitoring alarm devices. The continuous occurrence of electric bicycle fire accidents that cause death and injury has sounded the alarm for the installation of alarm devices. Summary of the Invention

[0004] The present invention provides a simple alarm device for abnormal temperature rise in a lithium battery box and a cooling method thereof, which can effectively solve the problem proposed in the above background technology that the monitoring of battery temperature requires an external monitoring and early warning device to realize the alarm function. There are also special alarm devices that integrate electrochemical, temperature, characteristic gas and other signals, but the system is highly complex, the cost is high, and the maintenance is difficult. In addition, for electric bicycle battery boxes, there is actually a lack of corresponding thermal runaway and fire monitoring and alarm devices, which leads to the continuous occurrence of electric bicycle fire-related deaths and injuries.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a simple alarm device for abnormal temperature rise in a lithium battery box, comprising a housing, a battery placed inside the housing, a normally open metal temperature control switch installed on the top of the battery, a buzzer for alarming installed on the top of the housing, battery electrodes provided on the top of the battery, an insulating and heat-insulating layer filled between the housing and the battery, a partition installed on the inner top of the housing, a liquid injection port opened on the top of the battery, and a pressure relief port provided on the top of the battery at the position corresponding to the liquid injection port;

[0006] The battery electrodes include a positive battery electrode and a negative battery electrode, the positive battery electrode is connected to a positive electrode connecting wire, the negative battery electrode and the buzzer are connected to a negative electrode connecting wire, the input end of the normally open metal temperature control switch is connected to a temperature control switch input wire, the output end of the normally open metal temperature control switch is connected to a temperature control switch output wire, and the input end of the buzzer is connected to a buzzer connecting wire;

[0007] A heat dissipation component is installed on the inner top of the shell, and a shock absorption component is installed on the outer bottom of the shell.

[0008] According to the above technical solution, the batteries are provided in five groups, and the five groups of batteries are connected in series. A normally open metal temperature control switch is provided on the top of each group of batteries, and the normally open metal temperature control switch is installed at the position corresponding to the pressure relief port on the top of the battery.

[0009] According to the above technical solution, the positive electrode of the battery at one end of the shell is connected to the positive electrode connecting wire, and the negative electrode of the battery at the other end of the shell is connected to the negative electrode connecting wire.

[0010] According to the above technical solution, the normally open metal temperature-controlled switch is connected in parallel between the positive connection wire and the buzzer connection wire through the temperature-controlled switch input wire and the temperature-controlled switch output wire at both ends.

[0011] According to the above technical solution, the heat dissipation assembly includes a lower shell, an upper shell cover, a stainless steel slot plate, a locking rubber strip, a sliding hole, a return spring, a heat dissipation plate, an electromagnet block, a heat dissipation tube, a connecting groove, a heat dissipation hole and a positioning round block;

[0012] The heat dissipation tube moves downward to the outside of the bottom end of the stainless steel slot plate, leaking out of the heat dissipation holes. The internal heat enters the heat dissipation tube from the connecting slot and finally dissipates from the heat dissipation holes.

[0013] The battery is provided with a lower shell installed on the outside, the top of the lower shell is clamped with an upper shell cover, a stainless steel slot plate is installed on the outside of the top of the lower shell, the inner side of the lower shell and the outer side of the stainless steel slot plate are glued with locking rubber strips, a number of sliding holes are equidistantly provided in the middle of the stainless steel slot plate, a return spring is welded at the corresponding corner position of the inner side of the stainless steel slot plate, a heat sink is slidably clamped on the stainless steel slot plate, an electromagnet block is installed at the bottom of the heat sink, a heat sink is installed at the position of the sliding hole at the bottom of the heat sink, a connecting groove is provided at the top of the heat sink corresponding to the position of the heat sink, a heat sink hole is provided at the bottom of the heat sink corresponding to the position of the stainless steel slot plate, and a positioning round block is installed at the bottom end of the heat sink located at the corner position of the heat sink.

[0014] According to the above technical solution, there are two electromagnet blocks, two heat sinks are symmetrically installed at the bottom of the heat sink, and the two electromagnet blocks are connected in parallel and then in series with the buzzer;

[0015] The lower shell and the upper shell cover constitute a shell;

[0016] The heat dissipation tube is slidably engaged in the sliding hole, the connection groove, the heat dissipation hole and the middle of the heat dissipation tube are communicated, and the bottom end of the heat dissipation tube is sealed.

[0017] According to the above technical solution, the shock absorber assembly includes a front axle seat, a rear axle seat, an axle hole, a rotating shaft, a rotating tube, a shock absorber plate, a mounting long hole, a mounting rod, a mounting groove, a middle rolling tube, a rolling wheel, a buffer spring, a block and an arc-shaped blocking groove;

[0018] The middle rolling tube and the rolling wheel move toward the two ends of the shell, the shock absorbing plate rotates toward the two ends of the shell, and the buffer spring is compressed;

[0019] The front axle seat is installed at the front end position of the bottom of the shell, and the rear axle seat is installed at the front end position of the bottom of the shell, and the end of the front axle seat is provided with an axial hole, and a rotating shaft is embedded and installed in the inside of the axial hole, and a rotating tube is rotatably sleeved on the outside of the rotating shaft, and a shock-absorbing plate is installed on the outside of the rotating tube, and a mounting long hole is provided at one end of the shock-absorbing plate, and a mounting rod is embedded and installed in the inside of the mounting long hole, and a mounting groove is provided at one end of the shock-absorbing plate, and a middle rolling tube is rolledly sleeved in the middle of the mounting rod, and rolling wheels are installed at both ends of the mounting rod, and a buffer spring is installed between the shock-absorbing plate and the shell, and a block is clamped and fixed between the front axle seat and the rear axle seat, and arc-shaped block grooves are symmetrically provided at both side ends of the block.

[0020] According to the above technical solution, the length of the middle rolling tube is equal to the length of the installation groove, and the middle rolling tube is rotatably connected to the inner side of the installation groove.

[0021] According to the above technical solution, a bearing is installed in the middle of the rolling wheel, and the rolling wheel is connected to the mounting rod through the bearing;

[0022] The rotating tube is installed inside the arc-shaped retaining groove.

[0023] According to the above technical solution, the steps of the cooling method are as follows:

[0024] S1. When the battery box temperature rises abnormally, the normally open metal temperature control switch responds and closes;

[0025] S2, the normally open metal temperature control switch after closing, connects the entire alarm device circuit;

[0026] S3, the buzzer is triggered and sends out an alarm signal of abnormal temperature rise;

[0027] S4. When the entire alarm device circuit is connected, the electromagnet block is energized and becomes magnetic, and the electromagnet block is magnetically attracted to the stainless steel slot plate, exposing the heat dissipation tube and heat dissipation holes.

[0028] S5. Connect the inside of the battery box with the outside through the heat dissipation holes to dissipate the heat of the lithium battery and cool it down.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. By setting a normally open metal temperature control switch and a buzzer, the normally open metal temperature control switch monitors the battery temperature. When the temperature is too high, the normally open metal temperature control switch closes, making the circuit connected to the buzzer conductive, so that the buzzer sounds, which can realize a simple and rapid alarm function for thermal disasters inside the lithium battery box, alerting users that the battery temperature is too high, avoiding safety hazards caused by high-temperature use of the battery, making battery use safer, and ensuring the initiative and rapidity of abnormal temperature rise alarm in the lithium battery box. It has strong scalability and can be widely used in lithium battery boxes in various scenarios. It is simple, flexible and easy to operate.

[0031] 2. By setting up a stainless steel slot plate, an electromagnet block, a heat dissipation tube, a reset spring and a heat dissipation hole, when the normally open metal temperature control switch senses an abnormal temperature rise and closes, the electromagnet block connected in series with it is energized at this time, and the electromagnet block in series is magnetically fixed to the stainless steel slot plate, and at the same time, the reset spring is squeezed to move the heat dissipation tube toward the bottom end of the stainless steel slot plate, thereby moving the heat dissipation hole to the outside of the bottom of the stainless steel slot plate, so that the heat inside the shell enters the heat dissipation tube through the connecting groove, and finally dissipates to the outside from the heat dissipation hole, thereby facilitating rapid heat dissipation of the battery when the battery temperature is high.

[0032] 3. Place the battery-containing casing at the required installation position through the shock-absorbing plate, buffer spring, middle rolling tube and rolling wheel. At this time, the rolling wheel and middle rolling tube are in contact with the placement position, compressing the buffer spring to support the casing and the battery. During use, the buffering effect of the buffer spring and shock-absorbing plate can buffer and absorb shock at the bottom of the casing, thereby avoiding damage to the battery caused by vibration and making the battery safer during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0034] In the attached figure:

[0035] Figure 1 It is a front view of the battery of the present invention;

[0036] Figure 2 is a side view of a battery of the present invention;

[0037] Figure 3 is a top view of a battery of the present invention;

[0038] Figure 4 It is a schematic structural diagram of the heat dissipation plate of the present invention;

[0039] Figure 5 2. It is a schematic structural diagram of the return spring of the present invention;

[0040] Figure 6 It is a schematic diagram of the heat dissipation hole structure of the present invention;

[0041] Figure 7 It is the alarm circuit connection diagram of the present invention;

[0042] Figure 8 This is a schematic diagram of the structure of the middle rolling tube of the present invention;

[0043] Figure 9 It is a schematic structural diagram of the shock absorbing plate of the present invention;

[0044] Figure 10 It is a schematic diagram of the block structure of the present invention;

[0045] Figure 11 It is an alarm step diagram of the present invention;

[0046] Numbers in the figure: 1. Normally open metal temperature control switch; 2. Buzzer; 3. Battery electrode; 4. Battery; 5. Insulation and heat insulation layer; 6. Housing; 7. Partition; 8. Battery positive electrode; 9. Battery negative electrode; 10. Liquid filling port; 11. Pressure relief port; 12. Positive electrode connecting wire; 13. Temperature control switch input wire; 14. Temperature control switch output wire; 15. Buzzer connecting wire; 16. Negative electrode connecting wire.

[0047] 17. Heat dissipation assembly; 1701. Lower housing; 1702. Upper housing cover; 1703. Stainless steel groove plate; 1704. Snap-fit rubber strip; 1705. Sliding hole; 1706. Return spring; 1707. Heat dissipation plate; 1708. Electromagnet block; 1709. Heat dissipation tube; 1710. Connecting groove; 1711. Heat dissipation hole; 1712. Positioning block;

[0048] 18. Shock absorber assembly; 1801. Front axle seat; 1802. Rear axle seat; 1803. Axle hole; 1804. Rotating shaft; 1805. Rotating tube; 1806. Shock absorber plate; 1807. Mounting long hole; 1808. Mounting rod; 1809. Mounting groove; 1810. Middle rolling tube; 1811. Rolling wheel; 1812. Buffer spring; 1813. Stop block; 1814. Arc-shaped stop groove. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] Example 1:

[0051] like Figure 1-3 7, the present invention provides a technical solution, a simple alarm device for abnormal temperature rise in a lithium battery box, comprising a shell 6, a battery 4 is placed inside the shell 6, a normally open metal temperature control switch 1 is installed on the top of the battery 4, a buzzer 2 for alarm is installed on the top of the shell 6, a battery electrode 3 is provided on the top of the battery 4, an insulating and heat-insulating barrier 5 is filled between the shell 6 and the battery 4, a partition 7 is installed on the inner top of the shell 6, a liquid injection port 10 is opened on the top of the battery 4, a pressure relief port 11 is provided at the position of the top of the battery 4 corresponding to the liquid injection port 10, five groups of batteries 4 are provided, and the five groups of batteries 4 are connected in series, and a normally open metal temperature control switch 1 is provided on the top of each group of batteries 4, and the normally open metal temperature control switch 1 is installed at the position of the top of the battery 4 corresponding to the pressure relief port 11, so as to facilitate sensing of abnormal temperature rise;

[0052] The battery electrode 3 includes a battery positive electrode 8 and a battery negative electrode 9. The battery positive electrode 8 is connected to a positive electrode connecting wire 12. A negative electrode connecting wire 16 is connected between the battery negative electrode 9 and the buzzer 2. The input end of the normally open metal temperature-controlled switch 1 is connected to a temperature-controlled switch input wire 13, the output end of the normally open metal temperature-controlled switch 1 is connected to a temperature-controlled switch output wire 14, and the input end of the buzzer 2 is connected to a buzzer connecting wire 15. The normally open metal temperature-controlled switch 1 is connected in parallel between the positive electrode connecting wire 12 and the buzzer connecting wire 15 through the temperature-controlled switch input wire 13 and the temperature-controlled switch output wire 14 at both ends, so that the normally open metal temperature-controlled switch 1 is connected to the circuit. The battery positive electrode 8 at one end of the shell 6 is connected to the positive electrode connecting wire 12, and the battery negative electrode 9 at the other end of the shell 6 is connected to the negative electrode connecting wire 16, so that the battery 4 is connected to the circuit;

[0053] A heat dissipation assembly 17 is installed on the inner top of the housing 6 , and a shock absorbing assembly 18 is installed on the outer bottom of the housing 6 .

[0054] like Figure 4-7 As shown, the heat dissipation assembly 17 includes a lower housing 1701, an upper housing cover 1702, a stainless steel groove plate 1703, a locking rubber strip 1704, a sliding hole 1705, a return spring 1706, a heat dissipation plate 1707, an electromagnet block 1708, a heat dissipation tube 1709, a connecting groove 1710, a heat dissipation hole 1711 and a positioning round block 1712;

[0055] The heat dissipation tube 1709 moves downward to the outside of the bottom end of the stainless steel groove plate 1703 and leaks out of the heat dissipation hole 1711. The internal heat enters the heat dissipation tube 1709 from the connecting groove 1710 and finally dissipates from the heat dissipation hole 1711.

[0056] The outside of the battery 4 is equipped with a lower shell 1701, and the top of the lower shell 1701 is clamped with an upper shell cover 1702. The lower shell 1701 and the upper shell cover 1702 form a shell 6. A stainless steel groove plate 1703 is installed on the outside of the top of the lower shell 1701. The inner side of the lower shell 1701 and the outer side of the stainless steel groove plate 1703 are glued with a clamping rubber strip 1704. A number of sliding holes 1705 are equidistantly opened in the middle of the stainless steel groove plate 1703. A return spring 1706 is welded at the corresponding corner position of the inner side of the stainless steel groove plate 1703. The stainless steel groove plate 1703 is slidably clamped with a heat sink 1707. The bottom of the heat sink 1707 is equipped with an electromagnet block 1708. There are two electromagnet blocks 1708. The two heat sinks 1707 are symmetrically installed at the bottom of the heat sink 1707. After being connected in parallel, 1708 is connected in series with the buzzer 2 to facilitate the power-on use of the electromagnet block 1708. A heat dissipation tube 1709 is installed at the bottom of the heat dissipation plate 1707 corresponding to the position of the sliding hole 1705, and a cooling fan is installed at the position of the heat dissipation tube 1709. A connecting groove 1710 is provided at the top of the heat dissipation plate 1707 corresponding to the position of the heat dissipation tube 1709. A heat dissipation hole 1711 is provided at the bottom of the heat dissipation tube 1709 corresponding to the position of the stainless steel groove plate 1703. The heat dissipation tube 1709 is slidably engaged in the sliding hole 1705. The connecting groove 1710, the heat dissipation hole 1711 and the middle part of the heat dissipation tube 1709 are connected. The bottom end of the heat dissipation tube 1709 is sealed to facilitate the switching of the heat dissipation tube 1709 between sealing and heat dissipation. A positioning round block 1712 is installed at the bottom of the heat dissipation tube 1709 located at the corner of the heat dissipation plate 1707.

[0057] like Figure 8-10 As shown, the shock absorbing assembly 18 includes a front axle seat 1801, a rear axle seat 1802, an axle hole 1803, a rotating shaft 1804, a rotating tube 1805, a shock absorbing plate 1806, a mounting elongated hole 1807, a mounting rod 1808, a mounting groove 1809, a middle rolling tube 1810, a rolling wheel 1811, a buffer spring 1812, a stopper 1813 and an arc-shaped stop groove 1814;

[0058] The middle rolling tube 1810 and the rolling wheel 1811 move toward the two ends of the housing 6, the shock absorbing plate 1806 rotates toward the two ends of the housing 6, and the buffer spring 1812 is compressed;

[0059] A front axle seat 1801 is installed at the front end position of the bottom of the shell 6, and a rear axle seat 1802 is installed at the front end position of the bottom of the shell 6. An axial hole 1803 is opened at the end of the front axle seat 1801, and a rotating shaft 1804 is embedded and installed inside the axial hole 1803. A rotating tube 1805 is rotatably sleeved on the outside of the rotating shaft 1804. A shock-absorbing plate 1806 is installed on the outside of the rotating tube 1805. A mounting long hole 1807 is opened at one end of the shock-absorbing plate 1806. A mounting rod 1808 is embedded and installed inside the mounting long hole 1807. A mounting groove 1809 is opened at one end of the shock-absorbing plate 1806. A middle rolling tube 1810 is rolled and sleeved on the middle part of the mounting rod 1808. The length of the middle rolling tube 1810 is the same as that of the mounting groove 1809 are of equal length, and the middle rolling tube 1810 is rotatably connected to the inner side of the mounting groove 1809 to facilitate the connection of the middle rolling tube 1810. Rolling wheels 1811 are installed at both ends of the mounting rod 1808, and a bearing is installed in the middle of the rolling wheel 1811. The rolling wheel 1811 is connected to the mounting rod 1808 through the bearing to facilitate the rotation installation of the rolling wheel 1811. A buffer spring 1812 is installed between the shock absorbing plate 1806 and the outer shell 6. A stopper 1813 is clamped and fixed between the front axle seat 1801 and the rear axle seat 1802. The two side ends of the stopper 1813 are symmetrically provided with arc-shaped stop grooves 1814. The rotating tube 1805 is installed inside the arc-shaped stop groove 1814 to facilitate the limiting of the rotating tube 1805.

[0060] Example 2:

[0061] like Figure 11 As shown, the steps of the cooling method are as follows:

[0062] S1. When the battery box temperature rises abnormally, the normally open metal temperature control switch 1 responds and closes;

[0063] S2, the normally open metal temperature control switch 1 after closing, connects the entire alarm device circuit;

[0064] S3, buzzer 2 is triggered, and an abnormal temperature rise alarm signal is issued;

[0065] S4. When the entire alarm device circuit is connected, the electromagnet block 1708 is energized and becomes magnetic, and the electromagnet block 1708 is magnetically attracted to the stainless steel slot plate 1703, exposing the heat dissipation tube 1709 and the heat dissipation hole 1711.

[0066] S5. Connect the inside of the battery box with the outside through the heat dissipation holes 1711 to dissipate the heat of the lithium battery and cool it down.

[0067] The working principle and use process of the present invention are as follows: five groups of batteries 4 are connected in series inside the housing 6, and the battery positive electrode 8 and the battery negative electrode 9 at both ends are reserved. The reserved battery positive electrode 8 and the battery negative electrode 9 are connected to the positive electrode connecting wire 12 and the negative electrode connecting wire 16 respectively;

[0068] The housing 6 containing the battery 4 is placed at the location where it needs to be installed. At this time, the rolling wheel 1811 and the middle rolling tube 1810 are in contact with the placement position, compressing the buffer spring 1812 to support the housing 6 and the battery 4. During use, the buffer spring 1812 and the shock-absorbing plate 1806 can provide buffering and shock absorption to the bottom of the housing 6, thereby preventing damage to the battery 4 caused by vibration, making the battery 4 safer during use. In addition, the middle rolling tube 1810 and the rolling wheel 1811 can roll on a plane, facilitating the overall movement of the battery 4.

[0069] When the temperature of the battery 4 is too high, the normally open metal temperature control switch 1 senses the abnormal inward temperature rise and closes, thereby connecting the temperature control switch input wire 13 and the temperature control switch output wire 14, and connecting the buzzer connecting wire 15, the positive electrode connecting wire 12 and the negative electrode connecting wire 16, so that the entire alarm circuit is connected, the buzzer 2 sounds, and an alarm signal is issued to remind the user to prevent the battery 4 from continuing to heat up, making the use of the battery 4 safer.

[0070] When the battery 4 is in normal use, the heat dissipation tube 1709 is placed inside the sliding hole 1705. When the normally open metal temperature control switch 1 senses an abnormal temperature rise and closes, the electromagnet block 1708 connected to it is energized at this time, and the electromagnet block 1708 is magnetically fixed to the stainless steel groove plate 1703, while squeezing the return spring 1706, so that the heat dissipation tube 1709 moves toward the bottom end of the stainless steel groove plate 1703, thereby moving the heat dissipation hole 1711 to the bottom outside of the stainless steel groove plate 1703, so that the heat inside the shell 6 enters the heat dissipation tube 1709 through the connecting groove 1710, and is blown by the cooling fan and finally dissipated to the outside through the heat dissipation hole 1711, thereby facilitating rapid heat dissipation of the battery 4 when the temperature of the battery 4 is high. After the heat dissipation is completed, the normally open metal temperature control switch 1 is disconnected, the electromagnet block 1708 is de-energized, the return spring 1706 stretches and resets, pushing the heat dissipation plate 1707 upward, so that the heat dissipation hole 1711 at the bottom of the heat dissipation tube 1709 moves to the inside of the stainless steel groove plate 1703.

[0071] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A simple alarm device for abnormal temperature rise in a lithium battery box, characterized by: The invention comprises a housing (6), a battery (4) is placed inside the housing (6), a normally open metal temperature control switch (1) is installed on the top of the battery (4), a buzzer (2) for alarm is installed on the top of the housing (6), a battery electrode (3) is provided on the top of the battery (4), an insulating and heat-insulating layer (5) is filled between the housing (6) and the battery (4), a partition (7) is installed on the inner top of the housing (6), a liquid injection port (10) is provided on the top of the battery (4), and a pressure relief port (11) is provided on the top of the battery (4) at a position corresponding to the liquid injection port (10); The battery electrode (3) includes a battery positive electrode (8) and a battery negative electrode (9), the battery positive electrode (8) is connected to a positive electrode connecting wire (12), the battery negative electrode (9) and the buzzer (2) are connected to a negative electrode connecting wire (16), the input end of the normally open metal temperature control switch (1) is connected to a temperature control switch input wire (13), the output end of the normally open metal temperature control switch (1) is connected to a temperature control switch output wire (14), and the input end of the buzzer (2) is connected to a buzzer connecting wire (15); A heat dissipation component (17) is installed on the inner top of the housing (6), and a shock absorbing component (18) is installed on the outer bottom of the housing (6); The heat dissipation assembly (17) comprises a lower housing (1701), an upper housing cover (1702), a stainless steel groove plate (1703), a locking rubber strip (1704), a sliding hole (1705), a return spring (1706), a heat dissipation plate (1707), an electromagnet block (1708), a heat dissipation tube (1709), a connecting groove (1710), a heat dissipation hole (1711) and a positioning round block (1712); The heat dissipation tube (1709) moves downward to the outside of the bottom end of the stainless steel groove plate (1703), leaking out of the heat dissipation hole (1711), and the internal heat enters the heat dissipation tube (1709) from the connecting groove (1710), and finally dissipates from the heat dissipation hole (1711); The battery (4) is provided with a lower shell (1701) on the outside, an upper shell cover (1702) is clamped on the top of the lower shell (1701), a stainless steel slot plate (1703) is provided on the outside of the top of the lower shell (1701), the inner side of the lower shell (1701) and the outer side of the stainless steel slot plate (1703) are both glued with a clamping rubber strip (1704), a plurality of sliding holes (1705) are equidistantly provided in the middle of the stainless steel slot plate (1703), a reset spring (1706) is welded at the corresponding corner position on the inner side of the stainless steel slot plate (1703), and the stainless steel slot plate (1703) slides. A heat sink (1707) is clamped, an electromagnet block (1708) is installed at the bottom of the heat sink (1707), a heat sink tube (1709) is installed at the position of the sliding hole (1705) at the bottom of the heat sink (1707), a connecting groove (1710) is provided at the top of the heat sink (1707) corresponding to the position of the heat sink tube (1709), a heat sink hole (1711) is provided at the bottom of the heat sink tube (1709) corresponding to the position of the stainless steel groove plate (1703), and a positioning round block (1712) is installed at the bottom of the heat sink tube (1709) located at the corner of the heat sink (1707).

2. The simple alarm device for abnormal temperature rise in a lithium battery box according to claim 1, characterized in that: The batteries (4) are provided in five groups, and the five groups of batteries (4) are connected in series. A normally open metal temperature control switch (1) is provided on the top of each group of batteries (4). The normally open metal temperature control switch (1) is installed at a position corresponding to the pressure relief port (11) on the top of the battery (4).

3. The simple alarm device for abnormal temperature rise in a lithium battery box according to claim 1, characterized in that: The battery positive electrode (8) at one end of the housing (6) is connected to the positive electrode connecting wire (12), and the battery negative electrode (9) at the other end of the housing (6) is connected to the negative electrode connecting wire (16).

4. The simple alarm device for abnormal temperature rise in a lithium battery box according to claim 1, characterized in that: The normally open metal temperature control switch (1) is connected in parallel between the positive electrode connection wire (12) and the buzzer connection wire (15) through the temperature control switch input wire (13) and the temperature control switch output wire (14) at both ends.

5. The simple alarm device for abnormal temperature rise in a lithium battery box according to claim 1, characterized in that: Two electromagnet blocks (1708) are provided, and two heat sinks (1707) are symmetrically mounted on the bottom of the heat sink (1707). The two electromagnet blocks (1708) are connected in parallel and then in series with the buzzer (2); The lower shell (1701) and the upper shell cover (1702) constitute a shell (6); The heat dissipation tube (1709) is slidably engaged in the interior of the sliding hole (1705), the connection groove (1710), the heat dissipation hole (1711) and the middle of the heat dissipation tube (1709) are connected, and the bottom end of the heat dissipation tube (1709) is sealed.

6. The simple alarm device for abnormal temperature rise in a lithium battery box according to claim 1, characterized in that: The shock absorbing assembly (18) comprises a front axle seat (1801), a rear axle seat (1802), an axle hole (1803), a rotating shaft (1804), a rotating tube (1805), a shock absorbing plate (1806), a mounting long hole (1807), a mounting rod (1808), a mounting groove (1809), a middle rolling tube (1810), a rolling wheel (1811), a buffer spring (1812), a stopper (1813) and an arc-shaped stop groove (1814); The middle rolling tube (1810) and the rolling wheel (1811) move toward the two ends of the housing (6), the shock absorbing plate (1806) rotates toward the two ends of the housing (6), and the buffer spring (1812) is compressed; A front axle seat (1801) is installed at the front end of the bottom of the housing (6), and a rear axle seat (1802) is installed at the front end of the bottom of the housing (6). An axis hole (1803) is provided at the end of the front axle seat (1801), a rotating shaft (1804) is embedded and installed inside the axis hole (1803), a rotating tube (1805) is rotatably sleeved on the outside of the rotating shaft (1804), a shock-absorbing plate (1806) is installed on the outside of the rotating tube (1805), and a mounting long hole (1807) is provided at one end of the shock-absorbing plate (1806). A mounting rod (1808) is embedded and installed inside the housing (6), a mounting groove (1809) is provided at one end of the shock-absorbing plate (1806), a middle rolling tube (1810) is connected to the middle rolling sleeve of the mounting rod (1808), rolling wheels (1811) are installed at both ends of the mounting rod (1808), a buffer spring (1812) is installed between the shock-absorbing plate (1806) and the housing (6), a stopper (1813) is fixedly connected between the front axle seat (1801) and the rear axle seat (1802), and arc-shaped stopper grooves (1814) are symmetrically provided at both ends of the stopper (1813).

7. A simple alarm device for abnormal temperature rise in a lithium battery box according to claim 6, characterized in that: The length of the middle rolling tube (1810) is equal to the length of the mounting groove (1809), and the middle rolling tube (1810) is rotatably connected to the inner side of the mounting groove (1809).

8. The simple alarm device for abnormal temperature rise in a lithium battery box according to claim 6, characterized in that: A bearing is installed in the middle of the rolling wheel (1811), and the rolling wheel (1811) is connected to the mounting rod (1808) via the bearing; The rotating tube (1805) is installed inside the arc-shaped retaining groove (1814).

9. A cooling method for a simple alarm device for abnormal temperature rise in a lithium battery box according to any one of claims 1 to 8, characterized in that: The steps of the cooling method are as follows: S1. When the temperature of the battery box rises abnormally, the normally open metal temperature control switch (1) responds and closes; S2, the normally open metal temperature control switch (1) after closing, connects the entire alarm device circuit; S3, the buzzer (2) is triggered and sends out an abnormal temperature rise alarm signal; S4. When the entire alarm device circuit is connected, the electromagnet block (1708) is energized and has magnetism, and the electromagnet block (1708) is magnetically attracted to the stainless steel slot plate (1703), exposing the heat dissipation tube (1709) and the heat dissipation hole (1711); S5. Connect the inside of the battery box with the outside through the heat dissipation hole (1711) to dissipate the heat of the lithium battery and cool it down.

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