An outdoor split lithium battery cabinet

Abstract

The present invention discloses an outdoor split lithium battery cabinet, which relates to the technical field of lithium battery cabinets and comprises a battery cabinet body. Two cabinet doors are hinged on the outer wall at the opening of the battery cabinet body. A support frame is fixedly connected to the inner wall in the middle of the battery cabinet body. A support plate is also arranged inside the battery cabinet body. A battery module is arranged on the top of the support plate. A control box is also fixedly connected to the inner wall at the bottom of the battery cabinet body. An auxiliary disconnection mechanism is arranged on the top of the support plate for timely disconnection in case of abnormality during charging and discharging of the battery module to ensure safe operation of the battery cabinet body. Disconnection of a single abnormal battery module does not affect the charging and discharging of other normal battery modules, thereby reducing the cost of stopping the battery cabinet body as a whole, thereby improving the operation efficiency of the battery cabinet body. Moreover, when the memory metal recovers to its initial state at low temperature, the heat sink is reset, and repeated use can improve the economic efficiency of the battery cabinet body.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery cabinets, and specifically relates to an outdoor split lithium battery cabinet. Background Art

[0002] Outdoor energy storage cabinets have the characteristics of simplifying infrastructure construction costs, short construction cycles, high modularity, high environmental adaptability, easy transportation and installation, etc. They can be used for new energy peak shifting, load shifting, distribution capacity expansion, demand response, etc., and can be applied to new energy access such as wind energy and solar energy in shopping malls, communities, schools, factories, farms and other application scenarios.

[0003] However, in the prior art, there are still the following defects in specific use:

[0004] During the operation of the lithium battery cabinet, multiple batteries are usually stored and charged and discharged simultaneously. At present, although the existing battery cabinets are equipped with a monitoring system that can monitor the operating status of the batteries, however, when the batteries show abnormal conditions, the existing monitoring system often only continuously observes and analyzes the abnormal conditions. This continuous observation and analysis mode has serious drawbacks. Since it cannot make a power-off treatment in time, it is easy to cause a lag in the power-off operation. In the use scenario of lithium batteries, the timeliness of power-off is crucial. Once the power-off is not timely, the abnormal conditions of the batteries will rapidly deteriorate. In particular, the lithium batteries will catch fire due to overheating, until the entire battery cabinet is scrapped, resulting in greater economic losses.

[0005] Therefore, in view of this, the present invention proposes an outdoor split lithium battery cabinet to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides an outdoor split lithium battery cabinet to solve the technical problems raised in the above background art.

[0007] To achieve the above object, the technical solution adopted by the present invention is: an outdoor split lithium battery cabinet, including a battery cabinet body, on the outer wall of the opening of the battery cabinet body, two cabinet doors are hinged, on the inner wall at the middle of the battery cabinet body, a support frame is fixedly connected, inside the battery cabinet body, a support plate is further arranged, on the top of the support plate, a battery module is arranged, on the inner wall at the bottom of the battery cabinet body, a control box is further fixedly connected, and on the top of the support plate, an auxiliary disconnection mechanism is arranged for timely disconnecting during abnormal charging and discharging of the battery module to ensure the safe operation of the battery cabinet body.

[0008] As a further improvement of the above solution, the auxiliary disconnection mechanism includes a rectangular groove formed in the inner wall of the top of the support plate. A heat dissipation plate is hinged to the inner wall of the rectangular groove close to the cabinet door. The battery module is placed on the top of the heat dissipation plate. Two two-stage connecting rods are symmetrically hinged to the outer wall of the end of the heat dissipation plate away from the cabinet door. The two ends of the two two-stage connecting rods away from the heat dissipation plate are both hinged to the inner wall of the bottom of the rectangular groove. Two support seats are symmetrically and fixedly connected to the inner wall of the bottom of the rectangular groove close to the two two-stage connecting rods. A heightening plate is fixedly connected between the side walls of the tops of the two support seats. A memory metal is fixedly connected to the top of the heightening plate. The top of the memory metal is in contact with the outer wall of the bottom end of the battery module.

[0009] As a further improvement of the above solution, seven opening grooves are evenly formed in the inner wall of the support frame from top to bottom. The support plate is inserted into the opening grooves. The number of the support plates is the same as that of the opening grooves. Fifteen battery modules are arranged inside the battery cabinet body and on the top of the heat dissipation plate.

[0010] As a further improvement of the above solution, sockets are fixedly connected to the outer walls of the fifteen battery modules away from the cabinet door. A cable plug is fixedly connected to the inner wall of the battery cabinet body. The number of the cable plugs is the same as that of the sockets. The sockets are in plug-in fit with the cable plugs.

[0011] As a further improvement of the above solution, diversion holes are formed in both inner walls of the support plate on both sides of the rectangular groove. The diversion holes are communicated with the inside of the rectangular groove.

[0012] As a further improvement of the above solution, a locking mechanism is arranged inside the support frame. The locking mechanism includes a cross plate fixedly connected to the inner side wall of the support frame. A dust-proof cylinder is fixedly connected to the top of the cross plate. An air bag is fixedly connected to the inside of the dust-proof cylinder. A pressing cover is fixedly connected to the top of the air bag. The pressing cover is slidably matched with the dust-proof cylinder. The bottom of the support plate is in arc-end contact fit with the top of the pressing cover. A strip-shaped air bag is fixedly connected to the inner wall of the bottom of the opening groove. An air pipe is fixedly connected to the outer wall of the strip-shaped air bag. One end of the air pipe away from the strip-shaped air bag penetrates through the inner wall of the dust-proof cylinder and is fixedly connected to the outer wall of the air bag. The air pipe is communicated with the inside of the strip-shaped air bag and the air bag.

[0013] As a further improvement of the above solution, the cross plate is located below the opening groove. The cross plate, the dust-proof cylinder, the air bag, the pressing cover, the strip-shaped air bag and the air pipe are all arranged in the support frame in seven numbers from top to bottom.

[0014] As a further improvement of the above solution, an auxiliary air blowing assembly is further provided on the top of the support plate. The auxiliary air blowing assembly includes an air cylinder fixedly connected to the top of the side of the support plate away from the support frame. A piston rod is slidably connected through the interior of the air cylinder. A limiting plate is fixedly connected to the outer wall of the end of the piston rod away from the air cylinder. A support spring is fixedly connected to the outer wall of the side of the limiting plate close to the air cylinder. The end of the support spring away from the limiting plate is fixedly connected to the outer wall of the end of the air cylinder. An exhaust duct is fixedly connected to the outer wall of the bottom end of the air cylinder.

[0015] As a further improvement of the above solution, the exhaust duct is communicated with the interior of the air cylinder. A plurality of exhaust ducts are uniformly arranged on the outer wall of the bottom end of the air cylinder. The bottom openings of the plurality of exhaust ducts all face the diversion holes.

[0016] As a further improvement of the above solution, a dust collection box is inserted into the inner wall of the support plate and on one side of the diversion hole. The dust collection box is detachably arranged.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) When an abnormality occurs during the use of the battery module, the surface temperature rises abnormally and transfers heat to the shape memory alloy surface, triggering the deformation condition of the shape memory alloy (reaching the lowest temperature value), the crystal structure inside the shape memory alloy deforms with the change of temperature, gradually changing from a flat shape to an irregular long cylindrical shape on the surface. Using the height difference generated by the deformation of the shape memory alloy to lift the heat dissipation plate, under the action of the gravity of the battery module, the battery module slides towards the cabinet door side on the inclined heat dissipation plate. When sliding, the socket and the cable plug are separated by the pulling force, disconnecting the connection between the abnormal battery module and the cable plug, avoiding further temperature rise, and at the same time immediately cutting off the power supply, preventing current from flowing into the battery module, avoiding overheating, overcharging or short circuit, reducing heat accumulation, and reducing the risk of fire or explosion.

[0019] Among them, the two-stage connecting rod is set to cooperate with the shape memory alloy to lift the heat dissipation plate in sections. When the shape memory alloy starts to deform, a warning signal is first triggered, and this signal can notify the battery management system to reduce the charging current of the battery module or take other preliminary cooling measures. Only when the deformation amount of the shape memory alloy reaches a certain threshold, the disconnection of the socket and the cable plug will be truly triggered. The hierarchical triggering mechanism can avoid unnecessary connection interruption due to short-term temperature fluctuations, and at the same time provides more coping strategies for the system, increasing the intelligence of the entire battery management system. Compared with the direct disconnection method, the sectional lifting can make the connection between the socket and the cable plug gradually loosen, reduce the impact on the circuit system caused by sudden disconnection, and reduce the damage to the battery module and related circuit equipment on the premise of ensuring safe disconnection, thereby prolonging the service life of the battery module and related circuit equipment.

[0020] Finally, this method is used in the initial stage of the abnormal start of the battery module to achieve the purpose of early detection and early intervention. Moreover, when a single abnormal battery module is disconnected, it does not affect the charging and discharging of other normal battery modules, reducing the cost of the overall shutdown of the battery cabinet body, thereby improving the operating efficiency of the battery cabinet body. Furthermore, when the shape memory metal returns to its initial state at low temperature, the heat dissipation plate is reset, and repeated use can improve the economic efficiency of the battery cabinet body.

[0021] (2) During the process of pushing the support plate into the opening groove, it contacts the top of the pressing cover, causing the pressing cover to cooperate with the dust-proof cylinder to press down the airbag. After the support plate is completely pushed into the opening groove, air is input into the strip-shaped airbag through the air pipe, making the strip-shaped airbag gradually change from the previous unsaturated state to a saturated state. Thus, it can play a role in filling and fixing between the bottom of the support plate and the inner wall of the bottom of the opening groove, increasing the friction force, thereby enhancing the stability of the support plate and preventing the support plate from shaking. At the same time, compared with the traditional method of fixing with bolts, the plug-in installation method is more convenient to operate, increasing the flexibility of using the internal space of the battery cabinet body and meeting the placement of battery modules with different height specifications.

[0022] In addition, from the perspective of maintenance, during the maintenance and replacement of the support plate or battery module, the plug-in installation can enable faster operation, saving time and labor costs. Moreover, since there is no need to reserve a large amount of bolt installation space on the battery cabinet body, the internal space layout of the battery cabinet is more compact and reasonable, which is conducive to improving the overall space utilization rate of the battery cabinet. At the same time, this installation method reduces potential safety hazards caused by problems such as bolt loosening, improving the safety of using the battery cabinet.

[0023] (3) The interior of the battery cabinet body is usually in a sealed state. The presence of a small amount of impurities will not have a great impact on the overall operation, and there is no need for frequent cleaning work. During maintenance, when the cabinet door is opened and closed, air is discharged through the exhaust pipe, using the air to remove impurities inside the diversion holes, preventing impurities from remaining inside the diversion holes due to untimely or incomplete maintenance by the staff, improving the permeability of the diversion holes, facilitating the discharge of heat, enhancing the heat dissipation effect. At the same time, the method of using the extrusion exhaust caused by opening and closing the cabinet door can reduce the use of electrical energy compared with directly using a fan to blow, achieving the purpose of energy conservation.

[0024] (4) By opening diversion holes on both sides of the heat dissipation plate, the inside of the rectangular groove can be connected to the outside through the diversion holes. By improving the air circulation efficiency, the heat dissipation plate can better regulate the surrounding temperature, creating a relatively stable temperature environment for the shape memory metal, enabling the shape memory metal to more stably exhibit its characteristics during operation and reducing performance fluctuations caused by temperature changes. Description of the Drawings

[0025] Figure 1 Schematic diagram of the front view three-dimensional structure of the present invention;

[0026] Figure 2 Schematic diagram of the internal three-dimensional structure of the battery cabinet body of the present invention;

[0027] Figure 3 Partial three-dimensional structure cross-sectional view of the battery cabinet body of the present invention;

[0028] Figure 4 Internal three-dimensional structure cross-sectional view of the battery cabinet body of the present invention;

[0029] Figure 5 Partial three-dimensional structure cross-sectional view of the components related to the auxiliary disconnection mechanism of the present invention;

[0030] Figure 6 Schematic diagram of the three-dimensional structure of the components related to the heat dissipation plate of the present invention;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the components related to the locking mechanism of the present invention;

[0032] Figure 8 Three-dimensional structure cross-sectional view of the components related to the locking mechanism of the present invention;

[0033] Figure 9 Schematic diagram of the three-dimensional structure of the components related to the auxiliary air blowing assembly of the present invention.

[0034] The reference numerals in the figure are: 1. Battery cabinet body; 101. Cabinet door; 102. Cable plug; 2. Support frame; 201. Opening groove; 3. Support plate; 301. Battery module; 302. Control box; 303. Socket; 401. Rectangular groove; 402. Heat dissipation plate; 403. Two-section connecting rod; 404. Support seat; 405. Raising plate; 406. Shape memory metal; 501. Diversion hole; 601. Horizontal plate; 602. Dust-proof cylinder; 603. Airbag; 604. Pressing cover; 605. Strip-shaped air bag; 606. Air pipe; 701. Air cylinder; 702. Piston rod; 703. Limiting plate; 704. Support spring; 705. Exhaust duct; 801. Ash collection box. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment of the present invention: Please refer to Figures 1 to 9As shown in the figure, an outdoor split lithium battery cabinet includes a battery cabinet body 1. On the outer wall at the opening of the battery cabinet body 1, two cabinet doors 101 are hinged. On the inner wall in the middle of the battery cabinet body 1, a support frame 2 is fixedly connected. Inside the battery cabinet body 1, a support plate 3 is also provided. On the top of the support plate 3, a battery module 301 is arranged. On the inner wall at the bottom of the battery cabinet body 1, a control box 302 is fixedly connected. On the top of the support plate 3, an auxiliary disconnection mechanism is provided for timely disconnection during abnormal charging and discharging of the battery module 301 to ensure the safe operation of the battery cabinet body 1.

[0037] The auxiliary disconnection mechanism includes a rectangular groove 401 opened on the inner wall at the top of the support plate 3. On the inner wall of the rectangular groove 401 close to one side of the cabinet door 101, a heat dissipation plate 402 is hinged. The battery module 301 is placed on the top of the heat dissipation plate 402. On the outer wall at one end of the heat dissipation plate 402 away from the cabinet door 101, two two-section connecting rods 403 are symmetrically hinged. At the ends of the two two-section connecting rods 403 away from the heat dissipation plate 402, they are both hinged to the inner wall at the bottom of the rectangular groove 401. On the inner wall at the bottom of the rectangular groove 401 close to one side of the two two-section connecting rods 403, two support seats 404 are symmetrically fixedly connected. Between the side walls at the top ends of the two support seats 404, a heightening plate 405 is fixedly connected. On the top of the heightening plate 405, a shape memory metal 406 is fixedly connected. The top end of the shape memory metal 406 is in contact with the outer wall at the bottom end of the battery module 301.

[0038] Among them, under the influence of the self-gravity of the battery module 301, the battery module 301 slides on the inclined surface of the heat dissipation plate 402 in the direction towards the cabinet door 101. During the sliding, the socket 303 and the cable plug 102 are directly separated under the influence of the pulling force, so that the connection between the abnormal battery module 301 and the cable plug 102 is disconnected, thereby preventing the temperature from further rising. At the same time, the power supply is immediately cut off to prevent the current from continuing to flow into the battery module 301, thus avoiding further overheating, overcharging or short circuit. By reducing the heat accumulation inside the battery module 301, the risk of fire or explosion is reduced. This method is used in the initial stage of the abnormality of the battery module 301 to achieve the purpose of early detection and early intervention. Moreover, a single abnormal battery module 301 is disconnected, which does not affect the charging and discharging of other normal battery modules 301, reduces the cost of the overall shutdown of the battery cabinet body 1, and further improves the operation efficiency of the battery cabinet body 1.

[0039] Preferably, seven opening grooves 201 are evenly formed in the inner wall of the support frame 2 from top to bottom. The support plate 3 is inserted into the opening grooves 201, and the number of the support plates 3 is the same as that of the opening grooves 201. There are fifteen battery modules 301 in the battery cabinet body 1 and located on the top of the heat dissipation plate 402. A socket 303 is fixedly connected to the outer wall of each of the fifteen battery modules 301 on the side away from the cabinet door 101. A cable plug 102 is fixedly connected to the inner wall of the battery cabinet body 1. The number of the cable plugs 102 is the same as that of the sockets 303. The socket 303 is in plug-in fit with the cable plug 102. Flow guiding holes 501 are formed in the inner walls of both sides of the rectangular groove 401 where the support plate 3 is located, and the flow guiding holes 501 are communicated with the inside of the rectangular groove 401.

[0040] Preferably, a locking mechanism is arranged inside the support frame 2. The locking mechanism includes a cross plate 601 fixedly connected to the inner side wall of the support frame 2. A dust-proof cylinder 602 is fixedly connected to the top of the cross plate 601. An air bag 603 is fixedly connected to the inside of the dust-proof cylinder 602. A pressing cover 604 is fixedly connected to the top of the air bag 603. The pressing cover 604 is in sliding fit with the dust-proof cylinder 602. The bottom of the support plate 3 is in abutting fit with the arc end of the top of the pressing cover 604. A strip-shaped air bag 605 is fixedly connected to the inner wall of the bottom of the opening groove 201. An air pipe 606 is fixedly connected to the outer wall of the strip-shaped air bag 605. One end of the air pipe 606 away from the strip-shaped air bag 605 penetrates through the inner wall of the dust-proof cylinder 602 and is fixedly connected to the outer wall of the air bag 603. The air pipe 606 is communicated with the inside of the strip-shaped air bag 605 and the air bag 603. The cross plate 601 is located below the opening groove 201. The cross plate 601, the dust-proof cylinder 602, the air bag 603, the pressing cover 604, the strip-shaped air bag 605 and the air pipe 606 are all arranged in seven from top to bottom inside the support frame 2.

[0041] Among them, along with the pressing cover 604 being pressed down by the support plate 3, the pressing cover 604 slides on the outer wall of the dust-proof cylinder 602, and at the same time presses the air bag 603, so that the air bag 603 is squeezed to generate air and is input into the strip-shaped air bag 605 through the air pipe 606. At this time, the support plate 3 is completely pushed into the opening groove 201, and the strip-shaped air bag 605 gradually changes from the previous unsaturated state to a saturated state. Furthermore, it can play a role of filling and fixing between the bottom of the support plate 3 and the inner wall of the bottom of the opening groove 201, so as to increase the friction force, thereby improving the stability of the support plate 3 and preventing the support plate 3 from shaking. At the same time, the plug-in installation method is more convenient to operate compared with the traditional method of fixing with bolts. At the same time, this installation method reduces the potential safety hazards caused by problems such as bolt loosening and improves the safety of using the battery cabinet body 1.

[0042] Preferably, an auxiliary air blowing assembly is further arranged on the top of the support plate 3. The auxiliary air blowing assembly includes an air cylinder 701 fixedly connected to the top of the side of the support plate 3 away from the support frame 2. A piston rod 702 is slidably connected through the inside of the air cylinder 701. A limiting plate 703 is fixedly connected to the outer wall of the end of the piston rod 702 away from the air cylinder 701. A support spring 704 is fixedly connected to the outer wall of the side of the limiting plate 703 close to the air cylinder 701. One end of the support spring 704 away from the limiting plate 703 is fixedly connected to the outer wall of the end of the air cylinder 701. An exhaust air pipe 705 is fixedly connected to the outer wall of the bottom end of the air cylinder 701. The exhaust air pipe 705 is communicated with the inside of the air cylinder 701. A plurality of exhaust air pipes 705 are uniformly arranged on the outer wall of the bottom end of the air cylinder 701. The bottom openings of the plurality of exhaust air pipes 705 all face the diversion holes 501. A dust collecting box 801 is inserted into the inner wall of the support plate 3 and on one side of the diversion holes 501. The dust collecting box 801 is detachably arranged.

[0043] Among them, with the closing of the cabinet door 101, the piston rod 702 is pushed and slides inside the air cylinder 701. At the same time, the support spring 704 is squeezed in cooperation with the limiting plate 703. The end of the piston rod 702 away from the cabinet door 101 slides inside the air cylinder 701, which will reduce the internal space of the air cylinder 701, so that air is discharged through the exhaust air pipe 705. Also, since the bottom opening of the exhaust air pipe 705 faces the diversion holes 501, the air can be used to remove the impurities inside the diversion holes 501, avoiding the situation that impurities remain inside the diversion holes 501 due to untimely or incomplete maintenance by the staff, improving the permeability of the diversion holes 501, being beneficial to accelerating heat dissipation and improving the heat dissipation effect.

[0044] The following are the complete usage steps and working principles of the above embodiment:

[0045] When the device is in use, the staff member opens the cabinet door 101, so that the opening of the battery cabinet body 1 is opened, facilitating the placement of fifteen battery modules 301 on top of the heat sink 402 provided on the surface of the support plate 3. At the same time, by plugging the socket 303 into the cable plug 102, the battery module 301 can be monitored by the control box 302 and normally charged and discharged inside the battery cabinet body 1. Subsequently, the battery module 301 is pushed deeper into the battery cabinet body 1, causing the outer wall at the bottom of the side of the battery module 301 close to the socket 303 to contact the top of the shape memory alloy 406. When the battery module 301 is in a normal charging and discharging state, heat will be dissipated from its surface, and the heat will be transferred to the heat sink 402 and the shape memory alloy 406. Utilizing the relatively large cross-section of the heat sink 402, the heat is dispersed. At the same time, existing air conditioning facilities are equipped inside the battery cabinet body 1, enabling the interior of the battery cabinet body 1 to be in a constant temperature environment, effectively eliminating the heat dissipated by the battery module 301. When the relatively low heat is transferred to the surface of the shape memory alloy 406, the deformation temperature required by the shape memory alloy 406 is not reached, so the shape memory alloy 406 does not deform. Also, when an abnormality occurs during the use of the battery module 301, its surface temperature rises abnormally. When the relatively high heat is transferred to the surface of the shape memory alloy 406, it triggers the minimum temperature value for the shape memory alloy 406 to generate deformation. The crystal structure inside the shape memory alloy 406 will gradually deform with the change of temperature, starting from the initial flat shape and gradually deforming into an irregular long cylindrical shape on the surface. The principle of its deformation is that when the temperature is lower than its phase transition temperature, the alloy is in the martensite phase, having a relatively low elastic modulus and a soft characteristic, and is prone to deformation. When the temperature rises above the phase transition temperature, the alloy will transform into the austenite phase and return to its original shape. In addition, the shape memory alloy 406 is fixed on top of the heightening plate 405, and there is a height difference between the heightening plate 405 and the inner wall of the bottom of the rectangular groove 401, raising the initial height of the shape memory alloy 406. At the same time, in cooperation with the shape memory alloy 406 in the expanded state, the shape memory alloy 406 can better lift the heat sink 402. The two support seats 404 can support the heat sink 402 during the placement of the battery module 301, effectively ensuring the stability of the heat sink 402 and avoiding vibration interference caused by unstable placement of the battery module 301. Along with the height of the end of the heat sink 402 close to the shape memory alloy 406 being lifted, the angle between the hinge of the heat sink 402 and the inner wall of the bottom of the rectangular groove 401 becomes an acute angle. When the surface of the heat sink 402 is an inclined plane, under the influence of the self-weight of the battery module 301 at this time, the battery module 301 slides in the direction of the cabinet door 101 on the inclined surface of the heat sink 402. During the sliding process, the socket 303 and the cable plug 102 are directly separated under the influence of the pulling force, disconnecting the connection between the abnormal battery module 301 and the cable plug 102, thus preventing the temperature from rising further and immediately cutting off the power supply to prevent current from continuing to flow into the battery module 301.Thus, further overheating, overcharging or short - circuiting can be avoided. By reducing the heat accumulation inside the battery module 301, the risk of fire or explosion is reduced. This method is used in the initial stage when the battery module 301 starts to malfunction abnormally, achieving the purpose of early detection and early intervention. Moreover, when a single abnormal battery module 301 is disconnected, it does not affect the charging and discharging of other normal battery modules 301, reducing the cost of the entire battery cabinet body 1 being out of service, and thus improving the operating efficiency of the battery cabinet body 1. Also, when the shape - memory metal 406 returns to its initial state at low temperature, the heat - dissipation plate 402 is reset, and the repeated use can improve the economic efficiency of using the battery cabinet body 1.

[0046] The two - stage connecting rod 403 is set to cooperate with the shape - memory metal 406 to achieve the purpose of segmentally lifting the heat - dissipation plate 402. The hierarchical triggering mechanism can avoid unnecessary connection interruptions caused by short - term temperature fluctuations. At the same time, it also provides more coping strategies for the system, increasing the intelligence of the entire battery management system. Also, when the shape - memory metal 406 deforms slowly and cooperates with the two - stage connecting rod 403, the connection between the socket 303 and the cable plug 102 will gradually become loose, reducing the impact on the circuit system caused by sudden disconnection, and reducing the damage to the battery module 301 and related circuit equipment on the premise of ensuring safe disconnection.

[0047] Since the rectangular groove 401 is opened on the top of the support plate 3, heat accumulation is likely to occur in the area below the heat - dissipation plate 402 where the rectangular groove 401 is located. In order to avoid the shape - memory metal 406 being accidentally triggered by heat, by opening diversion holes 501 on both sides of the heat - dissipation plate 402, the inside of the rectangular groove 401 can be connected to the outside through the diversion holes 501, improving the air - flow efficiency. This not only improves the heat - dissipation effect of the heat - dissipation plate 402 but also improves the use stability of the shape - memory metal 406.

[0048] In addition, by placing multiple support plates 3 inside the battery cabinet body 1, the purpose of placing multiple battery modules 301 can be achieved. In order to improve the placement of battery modules 301 with different height specifications, the number of support plates 3 placed inside the battery cabinet body 1 can be reduced, and at the same time, the height difference between two adjacent support plates 3 up and down can be adjusted. When the support plate 3 is inserted into the corresponding opening groove 201, first, the middle contour of the support plate 3 needs to be aligned with the opening of the opening groove 201, and then it is pushed forcefully. As a result, the bottom of the support plate 3 will first contact the arc end of the top of the pressing cover 604. Along with the pressing cover 604 being pressed down by the support plate 3, the pressing cover 604 slides on the outer wall of the dust-proof cylinder 602, and at the same time presses the airbag 603, causing the airbag 603 to be squeezed and the generated air to be input into the strip-shaped air bag 605 through the air pipe 606. At this time, the support plate 3 is completely pushed into the opening groove 201, and the strip-shaped air bag 605 gradually changes from the previous unsaturated state to a saturated state, thereby playing a role of filling and fixing between the bottom of the support plate 3 and the inner wall of the bottom of the opening groove 201, increasing the friction force, thus improving the stability of the support plate 3 and preventing the support plate 3 from shaking. At the same time, compared with the traditional method of fixing with bolts, the plug-in installation method is more convenient to operate, increasing the flexibility of the use of the internal space of the battery cabinet body 1, meeting the placement of battery modules 301 with different height specifications. At the same time, this installation method reduces the safety hazards caused by problems such as bolt loosening, improving the safety of the battery cabinet body 1 during use.

[0049] During the opening and closing of the cabinet door 101, the inner side wall of the cabinet door 101 will contact the piston rod 702. In the open state of the cabinet door 101, under the elastic action of the support spring 704, the length of the end of the piston rod 702 close to the cabinet door 101 exceeds the opening of the battery cabinet body 1. Along with the closing of the cabinet door 101, the piston rod 702 is pushed and slides inside the air cylinder 701. At the same time, the support spring 704 is squeezed by cooperating with the limit plate 703, and the end of the piston rod 702 far from the cabinet door 101 slides inside the air cylinder 701, causing the internal space of the air cylinder 701 to decrease, and thus the generated air is discharged through the exhaust pipe 705. Also, since the bottom opening of the exhaust pipe 705 faces the diversion hole 501, the air can be used to remove the impurities inside the diversion hole 501, preventing the impurities from remaining inside the diversion hole 501 due to untimely or incomplete maintenance by the staff, improving the permeability of the diversion hole 501, facilitating the discharge of heat, and enhancing the heat dissipation effect. At the same time, the method of squeezing and exhausting air by opening and closing the cabinet door 101 can reduce the use of electrical energy compared with directly using a fan to blow, achieving the purpose of energy conservation. In addition, the impurities blown out by the air will fall into the dust collection box 801, and the dust collection box 801 is detachably arranged, making it convenient for the staff to handle them regularly and uniformly.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor split lithium battery cabinet, comprising a battery cabinet body (1), two cabinet doors (101) being hingedly connected to the outer wall at the opening of the battery cabinet body (1), a support frame (2) being fixedly connected to the inner wall at the middle of the battery cabinet body (1), a support plate (3) being further arranged inside the battery cabinet body (1), a battery module (301) being arranged on the top of the support plate (3), and a control box (302) being further fixedly connected to the inner wall at the bottom of the battery cabinet body (1), characterized in that: The top of the support plate (3) is provided with an auxiliary disconnection mechanism for timely disconnection when an abnormality occurs during the charging and discharging of the battery module (301) to ensure safe operation of the battery cabinet body (1); The auxiliary disconnection mechanism comprises a rectangular groove (401) formed on the inner wall of the top of the support plate (3); a heat sink (402) is hingedly connected to the inner wall of the rectangular groove (401) on the side close to the cabinet door (101); the battery module (301) is placed on the top of the heat sink (402); and two two-section connecting rods (403) are symmetrically hingedly connected to the outer wall of the heat sink (402) at one end away from the cabinet door (101); the two two-section connecting rods (403) are away from the heat sink (402). 02) are hinged to the bottom inner wall of the rectangular groove (401); two support seats (404) are symmetrically fixedly connected to the bottom inner wall of the rectangular groove (401) on one side close to the two two-section connecting rods (403); a heightening plate (405) is fixedly connected between the top side walls of the two support seats (404); a memory metal (406) is fixedly connected to the top of the heightening plate (405); and the top of the memory metal (406) is in contact with the bottom outer wall of the battery module (301).

2. The outdoor split lithium battery cabinet according to claim 1 is characterized in that: The inner wall of the support frame (2) is evenly provided with seven opening grooves (201) from top to bottom, the support plate (3) is plugged into the inside of the opening grooves (201), the number of the support plate (3) and the number of the opening grooves (201) are the same, and a total of fifteen battery modules (301) are provided inside the battery cabinet body (1) and on the top of the heat sink (402).

3. An outdoor split lithium battery cabinet according to claim 2, characterized in that: The fifteen battery modules (301) are all fixedly connected to sockets (303) on the outer walls on the side away from the cabinet door (101), and the inner wall of the battery cabinet body (1) is fixedly connected to a cable plug (102), the number of the cable plugs (102) being the same as the number of the sockets (303), and the sockets (303) are pluggably matched with the cable plugs (102).

4. The outdoor split lithium battery cabinet according to claim 1 is characterized in that: The inner walls of the support plate (3) on both sides of the rectangular groove (401) are provided with flow guide holes (501), and the flow guide holes (501) are connected to the inside of the rectangular groove (401).

5. The outdoor split lithium battery cabinet according to claim 2 is characterized in that: The support frame (2) is provided with a locking mechanism inside, the locking mechanism comprising a horizontal plate (601) fixedly connected to the inner wall of the support frame (2), a dustproof cylinder (602) fixedly connected to the top of the horizontal plate (601), an airbag (603) fixedly connected to the inside of the dustproof cylinder (602), a pressing cover (604) fixedly connected to the top of the airbag (603), the pressing cover (604) slidably cooperates with the dustproof cylinder (602), and the bottom of the support plate (3) is fixedly connected to the dustproof cylinder (602). A strip-shaped air bag (605) is fixedly connected to the inner wall of the bottom of the opening groove (201) so as to abut against the arc-shaped end of the top of the pressing cover (604), and an air pipe (606) is fixedly connected to the outer wall of the strip-shaped air bag (605). One end of the air pipe (606) away from the strip-shaped air bag (605) passes through the inner wall of the dustproof cylinder (602) and is fixedly connected to the outer wall of the air bag (603), and the air pipe (606) is in communication with the strip-shaped air bag (605) and the inside of the air bag (603).

6. The outdoor split lithium battery cabinet according to claim 5, characterized in that: The transverse plate (601) is located below the opening groove (201), and seven transverse plates (601), dustproof cylinders (602), air bags (603), pressing covers (604), strip-shaped air bags (605) and air pipes (606) are arranged from top to bottom inside the support frame (2).

7. The outdoor split lithium battery cabinet according to claim 4 is characterized in that: An auxiliary blowing assembly is also provided at the top of the support plate (3), and the auxiliary blowing assembly comprises an air cylinder (701) fixedly connected to the top of the support plate (3) away from the support frame (2); a piston rod (702) is slidably connected to the inside of the air cylinder (701); a limiting plate (703) is fixedly connected to the outer wall of one end of the piston rod (702) away from the air cylinder (701); a supporting spring (704) is fixedly connected to the outer wall of the limiting plate (703) on the side close to the air cylinder (701); one end of the supporting spring (704) away from the limiting plate (703) is fixedly connected to the outer wall of the end of the air cylinder (701); and an exhaust pipe (705) is fixedly connected to the outer wall of the bottom end of the air cylinder (701).

8. The outdoor split lithium battery cabinet according to claim 7 is characterized in that: The exhaust pipe (705) is in communication with the interior of the air cylinder (701), and a plurality of the exhaust pipes (705) are evenly arranged on the outer wall of the bottom end of the air cylinder (701), and the bottom openings of the plurality of exhaust pipes (705) all face the guide hole (501).

9. The outdoor split lithium battery cabinet according to claim 8, characterized in that: An ash collecting box (801) is plugged into the inner wall of the support plate (3) and located on one side of the guide hole (501); the ash collecting box (801) is detachably arranged.

Images