Storage battery overheat and overload protection device

Abstract

The utility model relates to an overheat overload protection device for a storage battery, which belongs to the technical field of battery protection and comprises a warning mechanism. The warning mechanism comprises a through hole formed in the side wall of the box body, a telescopic mechanism which is arranged in the through hole and stretches out of the box body by absorbing heat of the storage battery, a first sensor used for sensing stretching and retracting of the telescopic mechanism, and a heat dissipation mechanism arranged on the side wall of the box body; the heat dissipation mechanism comprises heat dissipation holes formed in the box body, heat dissipation fans arranged in the heat dissipation holes and a blocking mechanism used for opening and closing the heat dissipation holes; when the warning rod extends out, the warning rod can be sensed by the first sensor, then the driving device drives the blocking mechanism to open the heat dissipation holes, and the heat dissipation fan rotates to discharge heat in the box body, so that the storage battery is prevented from being in a high-temperature state continuously, the service life of the storage battery is prolonged, and overload of the storage battery due to high temperature is avoided; or the storage battery is prevented from being damaged due to high temperature generated by overload.

Description

Technical Field

[0001] The present application relates to the technical field of battery protection, and in particular to a battery overheating and overload protection device. Background Art

[0002] A battery is a device that converts chemical energy directly into electrical energy. It is a rechargeable battery designed to be recharged through a reversible chemical reaction. It usually refers to a lead-acid battery, which is a type of battery and belongs to a secondary battery. Its working principle is to use external electrical energy to regenerate internal active substances during charging, store electrical energy as chemical energy, and convert chemical energy into electrical energy output again when it needs to be discharged.

[0003] Battery packs are used as backup power sources in substations, mainly to ensure the normal operation of the power system. When the main power supply fails, the battery pack can immediately provide backup power to maintain the normal power supply of the power system. At the same time, the battery pack can also be used for daily starting of generator sets and support the operation of other power equipment.

[0004] Due to the high voltage, high power and long service life of the battery pack, the battery temperature is too high and may even swell and deform due to overheating, lose its function and be scrapped. During the use of the battery, due to exceeding the power range of the battery or human short circuit, or excessive high current discharge, irreversible damage may be caused to the battery.

[0005] In order to avoid the above problems, a battery case has been introduced, which has heat dissipation holes in a metal box shell or a carbon steel box shell for heat dissipation. However, the existing battery case only provides passive heat dissipation to protect the battery from overheating and overload, resulting in poor overheating and overload protection effect of the battery. Summary of the Invention

[0006] The embodiment of the present application provides a battery overheating and overload protection device to solve the problem in the related art that the existing battery box only performs overheating and overload protection for the battery by passive heat dissipation, resulting in poor overheating and overload protection effect of the battery.

[0007] The present invention provides a battery overheat and overload protection device, comprising:

[0008] A box structure, the box structure is used to store batteries, and the box structure includes a box body and a box bottom;

[0009] The warning mechanism includes a through hole formed on a side wall of the box body, a telescopic mechanism disposed in the through hole and extending out of the box body by absorbing heat from the battery, and a first sensor for sensing the extension and retraction of the telescopic mechanism;

[0010] The heat dissipation mechanism is arranged on the side wall of the box body, and the heat dissipation mechanism includes a heat dissipation hole opened on the box body, a heat dissipation fan arranged in the heat dissipation hole and a blocking mechanism for opening and closing the heat dissipation hole.

[0011] In some embodiments, the blocking mechanism includes two fixed blocks arranged on both sides of the heat dissipation hole, a closing plate arranged between the two fixed blocks for closing and opening the heat dissipation hole, and a driving device for driving the closing plate to move.

[0012] In some embodiments, grooves are formed on opposite sides of the two fixing blocks;

[0013] A threaded rod penetrating one side of the closing plate is arranged in the groove of one of the two fixing blocks, and a sliding rod penetrating the other side of the closing plate is arranged in the groove of the other fixing block.

[0014] In some embodiments, the driving device is in driving connection with the threaded rod.

[0015] In some embodiments, the driving device is a motor.

[0016] In some embodiments, a second sensor for sensing the position of the closing plate is provided on the box body.

[0017] In some embodiments, the telescopic mechanism includes a sleeve disposed in the through hole, wherein one end of the sleeve close to the through hole is open, and the other end is tightly attached to the side wall of the battery;

[0018] A warning rod is slidably arranged in the sleeve, and a push plate is arranged at one end of the warning rod close to the battery. Inflated gas is stored in a cavity between the push plate and the sleeve.

[0019] In some embodiments, the box body is further provided with an external connector for connecting the positive and negative poles of the battery, and the external connector is provided with an overload protector.

[0020] In some embodiments, the first sensor is disposed on a side wall of the box body and close to the through hole.

[0021] In some embodiments, the bottom of the box is provided with a base for placing batteries.

[0022] The beneficial effects of the technical solution provided by this application include:

[0023] When the battery needs to be stored, the box body is removed from the top of the box bottom, and then the battery is placed on the base of the box bottom. The box body is then put on the outside of the battery and covers the box bottom. The box body and the box bottom are then connected together with bolts to seal the box body and the box bottom.

[0024] When the battery overheats, the telescopic mechanism senses the heat and absorbs the heat of the battery, thereby driving the warning stick to extend out of the box body so that outside staff can see it, so that outside staff can know the status of the battery in time and maintain the battery in time. When the warning stick is extended, it will be sensed by the first sensor, and then the driving device drives the blocking mechanism to open the heat dissipation hole, and the cooling fan rotates to discharge the heat in the box body, avoiding the battery from being in a high temperature state for a long time, thereby increasing the battery life, avoiding battery overload due to high temperature, or avoiding battery damage due to high temperature generated by overload.

[0025] Warning mechanisms and heat dissipation mechanisms are set on the front, back, left, right and top surfaces of the box body, which can dissipate heat and issue warnings for the high temperature on each side. The staff can quickly know which side of the battery is in a high temperature state. When high temperature appears on one side or several sides of the battery, the warning mechanisms on the corresponding side or sides are extended, and then the heat dissipation mechanism is started to dissipate heat. When all the warning mechanisms are extended, it means that the battery as a whole is in a high temperature, which improves the discrimination of the battery status and better performs maintenance on the battery. Heat dissipation at multiple locations can better protect the battery from damage caused by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 A first structural diagram provided in an embodiment of the present application;

[0028] Figure 2 A second structural diagram provided in an embodiment of the present application;

[0029] Figure 3 A closed schematic diagram of the blocking mechanism provided in the embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the open state of the blocking mechanism provided in the embodiment of the present application.

[0031] 1. Box body; 2. Fixing block; 3. External connector; 4. Inflated gas; 5. Sleeve; 6. Push plate; 7. Heat dissipation hole; 8. Cooling fan; 9. Base; 10. Battery; 12. First sensor; 13. Warning stick; 14. Drive device; 15. Threaded rod; 16. Closing plate; 17. Sliding rod; 18. Second sensor; 19. Box bottom; 20. Through hole; 21. Groove; 22. Overload protector. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] The embodiment of the present application provides a battery overheating and overload protection device, which can solve the problem that the existing battery box only protects the battery from overheating and overload by passive heat dissipation, resulting in poor overheating and overload protection effect of the battery.

[0034] See also Figure 1-4 As shown, an embodiment of the present application provides a battery overheating and overload protection device, comprising:

[0035] The box body is used to store the battery 10, and the box body includes a box body 1 and a box bottom 19;

[0036] The warning mechanism includes a through hole 20 formed on the side wall of the box body 1, a telescopic mechanism disposed in the through hole 20 and extending out of the box body 1 by absorbing heat from the battery 10, and a first sensor 12 for sensing the extension and retraction of the telescopic mechanism;

[0037] The heat dissipation mechanism is arranged on the side wall of the box body 1. The heat dissipation mechanism includes a heat dissipation hole 7 opened on the box body 1, a heat dissipation fan 8 arranged in the heat dissipation hole 7 and a blocking mechanism for opening and closing the heat dissipation hole 7.

[0038] In this embodiment, the first sensor 12 is disposed on the side wall of the box body 1 and close to the through hole 20 .

[0039] In this embodiment, the box bottom 19 is provided with a base 9 for placing the battery 10 .

[0040] When the battery 10 needs to be stored, the box body 1 is removed from above the box bottom 19, and then the battery 10 is placed on the base 9 of the box bottom 19. The box body 1 is then put on the outside of the battery 10 and covers the box bottom 19. The box body 1 and the box bottom 19 are then connected together by bolts to seal the box body 1 and the box bottom 19 together.

[0041] When the battery 10 overheats, the telescopic mechanism senses the heat and absorbs the heat of the battery 10, thereby driving the warning rod 13 to extend out of the box body 1 so that outside staff can see it, which is convenient for outside staff to know the status of the battery 10 in time and maintain the battery 10 in time. When the warning rod 13 is extended, it will be sensed by the first sensor 12, and then the driving device 14 drives the blocking mechanism to open the heat dissipation hole 7, and the heat dissipation fan 8 rotates to discharge the heat in the box body 1, avoiding the battery 10 from being in a high temperature state for a long time, thereby improving the life of the battery 10, avoiding overloading of the battery 10 due to high temperature, or avoiding damage to the battery 10 due to the high temperature generated by overload.

[0042] Warning mechanisms and heat dissipation mechanisms are set on the front, back, left, right and top surfaces of the box body 1, which can dissipate heat and issue warnings for the high temperature on each side. The staff can quickly know which specific side of the battery 10 is in a high temperature state. When high temperature appears on one side or several sides of the battery 10, the warning mechanisms on the corresponding side or sides are extended, and then the heat dissipation mechanism is started to dissipate heat. When all the warning mechanisms are extended, it means that the battery 10 as a whole is in a high temperature, which improves the discrimination of the status of the battery 10 and better maintains the battery 10. The heat dissipation at multiple locations can better protect the battery 10 from being damaged by high temperature.

[0043] The first sensor 12 may be a distance measuring sensor. When the warning stick 13 is extended and covers the first sensor 12 , the first sensor 12 may send a signal.

[0044] In some optional embodiments, see Figure 1-4 As shown, in the battery overheating and overload protection device, the blocking mechanism includes two fixed blocks 2 arranged on both sides of the heat dissipation hole 7, a closing plate 16 arranged between the two fixed blocks 2 for closing and opening the heat dissipation hole 7, and a driving device 14 for driving the closing plate 16 to move.

[0045] In this embodiment, grooves 21 are provided on opposite sides of the two fixing blocks 2. A threaded rod 15 is provided in the groove 21 of one of the two fixing blocks 2, which passes through one side of the closing plate 16. A sliding rod 17 is provided in the groove 21 of the other fixing block 2, which passes through the other side of the closing plate 16.

[0046] In this embodiment, the driving device 14 is transmission-connected to the threaded rod 15 .

[0047] In this embodiment, the driving device 14 is a motor.

[0048] In this embodiment, a second sensor 18 for sensing the position of the closing plate 16 is provided on the box body 1 .

[0049] There are several heat dissipation holes 7 on each side of the box body 1 and they are arranged at equal intervals. The distance between each heat dissipation hole 7 is greater than the width of the closing plate 16, so that several closing plates 16 can be opened and closed synchronously without affecting other heat dissipation holes 7.

[0050] When the first sensor 12 senses, the motor starts to drive the threaded rod 15 to rotate, and the threaded rod 15 drives the closing plate 16 to descend, and the other end of the closing plate 16 is assisted in sliding by the sliding rod 17. A second sensor 18 is provided under one of the closing plates 16, and the second sensor 18 is also preferably a ranging sensor. When the closing plate 16 descends to the specified position, the motor stops rotating, and all the closing plates 16 can be opened, so that the cooling fan 8 starts to dissipate heat.

[0051] When heat dissipation is not required, the motor can be manually started to drive the threaded rod 15 to reverse, so that the closing plate 16 closes the heat dissipation hole 7. When the closing plate 16 is a certain distance away from the second sensor 18, it stops working, or it is manually stopped.

[0052] The closing plate 16 can be used to open the heat dissipation system of the battery 10 when heat dissipation is required, and closed when heat dissipation is not required, thereby preventing external dust and impurities from entering the box body 1.

[0053] In some optional embodiments, see Figure 1 As shown, in the battery overheat and overload protection device, the telescopic mechanism includes a sleeve 5 disposed in the through hole 20, one end of the sleeve 5 close to the through hole 20 is open, and the other end is tightly attached to the side wall of the battery 10;

[0054] A warning rod 13 is slidably provided in the sleeve 5 , and a push plate 6 is provided at one end of the warning rod 13 close to the battery 10 , and an expansion gas 4 is stored in the cavity between the push plate 6 and the sleeve 5 .

[0055] When the battery 10 starts to heat up, the expansion gas 4 in the sleeve 5 absorbs heat and expands. After the expansion gas 4 expands, the pressure increases, pushing the warning rod 13 toward the outside until it leaks out a certain distance, making it impossible for the expansion gas 4 to push. The warning rod 13 can also be made into a hollow structure, with an air leak hole opened on the side wall of the warning rod 13, and an air inlet hole connected to the air leak hole opened on the push plate 6. When the warning rod 13 is pushed out a certain distance, the air leak hole leaks out, the gas is deflated, and naturally it will not push the warning rod 13, so the warning rod 13 can be stopped.

[0056] The push plate 6 is used to push against the expansion gas 4 so that the expansion gas 4 has enough air pressure to push.

[0057] In some optional embodiments, see Figure 1-2 As shown, in the battery overheat and overload protection device, the box body 1 is further provided with an external connector 3 for connecting the positive and negative poles of the battery 10 , and the external connector 3 is provided with an overload protector 22 .

[0058] When all the heat dissipation mechanisms are opened or overloaded, the overload protector 22 opens, disconnecting the circuit of the external connector 3 to prevent the battery 10 from charging or discharging, and to prevent the battery 10 from continuing to work under high temperature or overload conditions.

[0059] The working principle and process of this application are as follows:

[0060] When the battery 10 needs to be stored, the box body 1 is removed from above the box bottom 19, and then the battery 10 is placed on the base 9 of the box bottom 19. The box body 1 is then put on the outside of the battery 10 and covers the box bottom 19. The box body 1 and the box bottom 19 are then connected together by bolts to seal the box body 1 and the box bottom 19 together.

[0061] When the battery 10 overheats, the telescopic mechanism senses the heat and absorbs the heat of the battery 10, thereby driving the warning rod 13 to extend out of the box body 1 so that outside staff can see it, which is convenient for outside staff to know the status of the battery 10 in time and maintain the battery 10 in time. When the warning rod 13 is extended, it will be sensed by the first sensor 12, and then the driving device 14 drives the blocking mechanism to open the heat dissipation hole 7, and the heat dissipation fan 8 rotates to discharge the heat in the box body 1, avoiding the battery 10 from being in a high temperature state for a long time, thereby improving the life of the battery 10, avoiding overloading of the battery 10 due to high temperature, or avoiding damage to the battery 10 due to the high temperature generated by overload.

[0062] Warning mechanisms and heat dissipation mechanisms are set on the front, back, left, right and top surfaces of the box body 1, which can dissipate heat and issue warnings for the high temperature on each side. The staff can quickly know which specific side of the battery 10 is in a high temperature state. When high temperature appears on one side or several sides of the battery 10, the warning mechanisms on the corresponding side or sides are extended, and then the heat dissipation mechanism is started to dissipate heat. When all the warning mechanisms are extended, it means that the battery 10 as a whole is in a high temperature, which improves the discrimination of the status of the battery 10 and better maintains the battery 10. The heat dissipation at multiple locations can better protect the battery 10 from being damaged by high temperature.

[0063] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0064] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0065] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A battery overheat and overload protection device, characterized in that: include: A box structure, the box structure is used to store batteries (10), and the box structure includes a box body (1) and a box bottom (19); A warning mechanism, comprising a through hole (20) formed on a side wall of the box body (1), a telescopic mechanism disposed in the through hole (20) and extending out of the box body (1) by absorbing heat from the battery (10), and a first sensor (12) for sensing the telescopic mechanism's telescopic movement; A heat dissipation mechanism is provided on a side wall of a box body (1), and comprises a heat dissipation hole (7) provided on the box body (1), a heat dissipation fan (8) provided in the heat dissipation hole (7), and a blocking mechanism for opening and closing the heat dissipation hole (7).

2. The battery overheat and overload protection device according to claim 1, characterized in that: The blocking mechanism comprises two fixed blocks (2) arranged on both sides of the heat dissipation hole (7), a closing plate (16) arranged between the two fixed blocks (2) for closing and opening the heat dissipation hole (7), and a driving device (14) for driving the closing plate (16) to move.

3. The battery overheat and overload protection device according to claim 2, characterized in that: A groove (21) is provided on one side opposite to the two fixing blocks (2); A threaded rod (15) penetrating one side of the closing plate (16) is provided in the groove (21) of one of the two fixing blocks (2), and a sliding rod (17) penetrating the other side of the closing plate (16) is provided in the groove (21) of the other fixing block (2).

4. The battery overheat and overload protection device according to claim 3, characterized in that: The driving device (14) is in transmission connection with the threaded rod (15).

5. The battery overheat and overload protection device according to claim 4, characterized in that: The driving device (14) is a motor.

6. The battery overheat and overload protection device according to claim 2, characterized in that: The box body (1) is provided with a second sensor (18) for sensing the position of the closing plate (16).

7. The battery overheat and overload protection device according to claim 1, characterized in that: The telescopic mechanism comprises a sleeve (5) disposed in the through hole (20), one end of the sleeve (5) close to the through hole (20) is open, and the other end is closely attached to the side wall of the battery (10); A warning rod (13) is slidably provided in the sleeve (5), a push plate (6) is provided at one end of the warning rod (13) close to the battery (10), and expansion gas (4) is stored in the cavity between the push plate (6) and the sleeve (5).

8. The battery overheat and overload protection device according to claim 1, characterized in that: The box body (1) is also provided with an external connector (3) for connecting the positive and negative electrodes of the battery (10), and the external connector (3) is provided with an overload protector (22).

9. The battery overheat and overload protection device according to claim 1, characterized in that: The first sensor (12) is arranged on the side wall of the box body (1) and is close to the through hole (20).

10. The battery overheat and overload protection device according to claim 1, characterized in that: The box bottom (19) is provided with a base (9) for placing the battery (10).

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