A new energy mining truck battery protection device

Abstract

This invention discloses a battery protection device for a new energy mining truck, relating to the field of secondary battery protection technology. It includes a protective box with multiple cooling fans fixed to its outer side; a protective assembly fixed to the lower end face of the protective box; multiple battery packs arranged equidistantly within the protective box and fixedly connected to the protective assembly; a drive assembly fixed to the center of the protective box; multiple isolation assemblies arranged symmetrically on both sides of the drive assembly and located between the multiple battery packs; a cover plate fixed to the upper end face of the protective box, with multiple contact plates slidably disposed at the lower end of the cover plate, and contact springs disposed between the contact plates and the cover plate, the contact springs being used to press the contact plates against the battery packs; and a flame-retardant housing fixed to the upper end face of the cover plate and connected to the interior of the protective box via multiple pipes, the flame-retardant housing storing flame-retardant gas.

Description

Technical Field

[0001] This invention relates to the field of secondary battery protection technology, specifically a battery protection device for new energy mining trucks. Background Technology

[0002] With the advancement of the global energy transition, new energy vehicles have become a core direction for innovation in the transportation sector. As their power core, the development of rechargeable battery technology directly affects vehicle performance and industrialization progress. However, lithium-ion batteries are prone to thermal runaway under overcharging, short circuits, mechanical compression, or high-temperature environments, leading to fires or even explosions. Therefore, protection measures are necessary.

[0003] Existing new energy battery protection devices use a box to house multiple battery packs and use a heat sink for heat dissipation. However, when one battery pack overheats, it cannot be effectively isolated and cooled, which can lead to a fire, affecting the other battery packs and making them prone to simultaneous fire, resulting in poor safety.

[0004] To address the above problems, this invention provides a battery protection device for new energy mining trucks, thereby solving the aforementioned issues. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a battery protection device for a new energy mining truck, comprising:

[0006] The protective case has multiple cooling fans fixed on its outside.

[0007] The protective components are fixed to the lower end face of the protective box;

[0008] Multiple battery packs are configured and arranged at equal intervals inside the protective box, and are fixedly connected to the protective components.

[0009] The drive assembly is fixed in the middle of the protective box;

[0010] Multiple isolation components are configured and symmetrically arranged on both sides of the drive component, and located between the multiple battery packs;

[0011] A cover plate is fixed to the upper surface of the protective box, and multiple contact plates are slidably arranged at the lower end of the cover plate. The multiple contact plates correspond to multiple battery packs. A contact spring is provided between the contact plate and the cover plate. The contact spring is used to press the contact plate and the battery pack together.

[0012] Temperature sensors, configured in multiple units, are fixed to the cover plate and correspond to multiple battery packs;

[0013] A flame-retardant enclosure is fixed to the upper surface of the cover plate and is connected to the interior of the protective box through multiple pipes. The flame-retardant enclosure contains flame-retardant gas.

[0014] Further, preferably, the isolated components include:

[0015] The isolation frame is fixed to the drive assembly, and sealing grooves are provided on the inner walls of its upper and lower end faces.

[0016] Multiple rotating shafts are configured to rotatably rotatably within the isolation frame;

[0017] An isolation plate is fixed on the rotating shaft, and sealing plates are symmetrically fixed at both ends of the plate;

[0018] A timing pulley is fixed to one end of the rotating shaft near the drive assembly, and the multiple timing pulleys are connected by a timing belt drive.

[0019] Further, preferably, the driving component includes:

[0020] The partition plate is fixed inside the protective box;

[0021] A drive gear is fixed to one of the rotating shafts;

[0022] The rack is slidably disposed within the partition plate;

[0023] A limiting component is fixed inside the partition plate;

[0024] Magnetic switch one is fixed inside the partition plate and corresponds to the rack.

[0025] Furthermore, preferably, one end of the rack is connected to a tension spring, and the other end is fixed with a limiting platform. A limiting groove is formed between the limiting platform and the rack. A magnetic element is fixed at the end of the limiting platform away from the rack, and the magnetic element corresponds to the magnetic switch.

[0026] Further, preferably, the limiting component includes:

[0027] A fixed frame is fixed inside the partition plate;

[0028] An electromagnet is fixed in the middle position of the fixed frame;

[0029] Two sliding plates are configured and symmetrically slidably arranged within the fixed frame, located on the upper and lower sides of the electromagnet, and a limit spring is provided between them and the fixed frame;

[0030] A limiting plate is fixed on the sliding plate and contacts the limiting groove for limiting.

[0031] Further, preferably, the protective component includes:

[0032] The base plate is fixed to the lower end face of the protective box;

[0033] Multiple disconnection assemblies are configured and slidably disposed on the base plate, each corresponding to one of the multiple battery packs.

[0034] Further, preferably, the de-exit assembly includes:

[0035] The mounting plate is slidably mounted on the base plate using multiple sliding columns, and a support spring is provided between the sliding columns and the base plate;

[0036] The trip gear is rotatably mounted on the base plate and located in the middle of the mounting plate;

[0037] The support column is slidably disposed within the tripping gear;

[0038] Two support platforms are configured and fixed between the support column and the base plate, respectively, and the two support platforms are arranged opposite to each other.

[0039] Two limit buckles are configured, both of which are fixed to the base plate;

[0040] A release rack is slidably disposed within the two limiting buckles and meshes with the release gear; a release groove is provided at the bottom of one end of the release rack.

[0041] The positioning component is installed inside the base plate and corresponds to the release groove.

[0042] Furthermore, preferably, the upper and lower end faces of the support platform are divided into platform one and platform two, the diameter of platform one is smaller than the diameter of platform two, and platform one and platform two are eccentrically arranged, with platform two being coaxial with the support column.

[0043] Further, preferably, the positioning component includes:

[0044] A positioning switch is hinged inside the base plate, and a torsion spring is sleeved at the hinge position. When the torsion spring is not subjected to external force, the positioning switch moves away from the tripping groove.

[0045] The pressing rod is slidably disposed within the base plate, and a pressing spring is disposed between the pressing rod and the base plate, wherein the elasticity of the pressing spring is greater than that of the torsion spring;

[0046] The second magnetic switch is fixed inside the base plate and corresponds to the pressing rod.

[0047] Compared with the prior art, the present invention provides a battery protection device for new energy mining trucks, which has the following beneficial effects:

[0048] In this invention, multi-level thermal runaway protection can be achieved through isolation components and flame-retardant housing. The temperature of the battery pack is monitored in real time by temperature sensors. Combined with the linkage design of isolation components and flame-retardant housing, the faulty battery pack is quickly isolated and flame-retardant gas is released in the early stage of thermal runaway, blocking the heat diffusion path and effectively preventing high-temperature gas or flame from spreading to adjacent battery areas. The protection components can quickly cut off power. When power is cut off, the tripping gear, tripping rack and positioning components in the protection components work together to trigger the support column to disengage when the battery expands abnormally or reaches a high temperature, quickly cutting off the connection between the battery pack and the system and reducing the risk of short circuit. Attached Figure Description

[0049] Figure 1 A schematic diagram of the overall structure of a new energy mining truck battery protection device;

[0050] Figure 2 A schematic diagram of the battery pack installation structure for a new energy mining truck battery protection device;

[0051] Figure 3 A schematic diagram of gas flow in the isolation component of a new energy mining truck battery protection device;

[0052] Figure 4 A schematic diagram of the drive assembly of a new energy mining truck battery protection device;

[0053] Figure 5 A schematic diagram of the limiting component of a new energy mining truck battery protection device;

[0054] Figure 6 This is a schematic diagram of the structure of a protective component for a new energy mining truck battery protection device;

[0055] Figure 7 for Figure 6 Enlarged view of point A;

[0056] In the diagram: 1. Protective box; 2. Cooling fan; 3. Protective assembly; 31. Base plate; 32. Tripping assembly; 33. Mounting plate; 34. Sliding column; 35. Support column; 36. Support platform; 37. Limit buckle; 38. Tripping rack; 39. Positioning assembly; 391. Positioning switch; 392. Pressing rod; 393. Pressing spring; 4. Battery pack; 5. Drive assembly; 51. Divider plate; 52. Drive gear; 53. Rack; 54. Limiting assembly; 531. Tension spring; 532. Limiting groove; 533. Limiting platform; 541. Fixing frame; 542. Electromagnet; 543. Sliding plate; 544. Limiting spring; 545. Limiting plate; 6. Isolation assembly; 61. Isolation frame; 62. Sealing groove; 63. Rotating shaft; 64. Isolation plate; 65. Sealing plate; 66. Synchronous pulley; 7. Cover plate; 8. Contact plate. Detailed Implementation

[0057] Reference Figures 1-7 This invention provides a technical solution: a battery protection device for a new energy mining truck, comprising:

[0058] The protective box 1 has multiple cooling fans fixed on its outer side;

[0059] The protective component 3 is fixed to the lower end face of the protective box 1;

[0060] Multiple battery packs 4 are configured and arranged at equal intervals inside the protective box 1, and are fixedly connected to the protective component 3.

[0061] The drive assembly 5 is fixed in the middle position of the protective box 1;

[0062] Multiple isolation components 6 are configured and symmetrically arranged on both sides of the drive component 5, and located between the multiple battery packs 4;

[0063] Cover plate 7 is fixed to the upper end face of the protective box 1, and multiple contact plates 8 are slidably arranged at the lower end of the cover plate 7. The multiple contact plates 8 correspond to multiple battery packs 4. A contact spring is provided between the contact plate 8 and the cover plate 7. The contact spring is used to press the contact plate 8 and the battery pack 4 together.

[0064] Temperature sensors are configured in multiple ways, fixed on the cover plate 7, and correspond to multiple battery packs 4;

[0065] The flame-retardant box is fixed to the upper surface of the cover plate 7 and is connected to the interior of the protective box 1 through multiple pipes. The flame-retardant box contains flame-retardant gas.

[0066] It should be noted that both the protective component 3 and the drive component 5 are driven by the backup power supply of the mine car, and during installation, they are pressed into contact with the battery pack 4 through the contact plate 8 on the cover plate 7 to improve the stability of the contact.

[0067] In this embodiment, the isolated component 6 includes:

[0068] The isolation frame 61 is fixed on the drive assembly 5, and sealing grooves 62 are provided on the inner walls of its upper and lower end faces;

[0069] Multiple rotating shafts 63 are configured to rotatably reside within the isolation frame 61;

[0070] An isolation plate 64 is fixed on the rotating shaft 63, and sealing plates 65 are symmetrically fixed at both ends of the isolation plate 64.

[0071] Synchronous pulley 66 is fixed to one end of the rotating shaft 63 near the drive assembly 5, and the multiple synchronous pulleys 66 are driven by synchronous belts.

[0072] It should be noted that the initial state of the isolation plate 64 is kept horizontal by the drive component 5, so that the cooling air introduced by the heat dissipation fan 2 can come into contact with the battery pack 4 and effectively cool down the battery pack 4. When the temperature sensor detects that the temperature of the battery pack 4 is abnormal, the drive component 4 controls the isolation plate 64 to rotate, thereby isolating the battery pack 4 with abnormal temperature, and releasing the flame-retardant gas through the flame-retardant box to realize multi-level thermal runaway protection measures, effectively preventing the spread of high temperature gas or flame to adjacent battery areas.

[0073] In a preferred embodiment, the driving component 5 includes:

[0074] The partition plate 51 is fixed inside the protective box 1;

[0075] A drive gear 52 is fixed on one of the rotating shafts 63;

[0076] The rack 53 is slidably disposed within the partition plate 51;

[0077] The limiting component 54 is fixed inside the partition plate 51;

[0078] Magnetic switch one is fixed inside the partition plate 51 and corresponds to the rack 53.

[0079] In a preferred embodiment, one end of the rack 53 is connected to a tension spring 531, and the other end is fixed with a limiting platform 533. A limiting groove 532 is formed between the limiting platform 533 and the rack 53. A magnetic element is fixed to the end of the limiting platform 533 away from the rack 53, and the magnetic element corresponds to the magnetic switch.

[0080] It should be noted that the rack 53 is initially positioned close to the magnetic switch 1 and is limited by the limiting component 54.

[0081] In a preferred embodiment, the limiting component 54 includes:

[0082] The fixing frame 541 is fixed inside the partition plate 51;

[0083] Electromagnet 542 is fixed at the middle position of the fixed frame 541;

[0084] Two sliding plates 543 are configured and symmetrically slidably disposed within the fixed frame 541, located on the upper and lower sides of the electromagnet 542, and a limit spring 544 is provided between them and the fixed frame 541.

[0085] The limiting plate 545 is fixed on the sliding plate 543 and contacts the limiting groove 532 for limiting.

[0086] In other words, when an abnormal temperature is detected in battery pack 4, electromagnet 542 and magnetic switch 1 are energized to generate a repulsive force, causing the two sliding plates 543 to move away from each other. This causes the limiting plate 545 to disengage from the limiting groove 532. The rack 53 slides through the tension spring 531 and magnetic switch 1, causing the drive gear 52 to rotate and drive the rotating shaft 63 to rotate, thus closing the isolation plate 64 and completing the isolation of battery pack 4. After isolation, electromagnet 542 and magnetic switch 1 are de-energized first, and the two sliding plates 543 move closer to each other through the limiting spring 544, thereby limiting the two limiting plates 545 to the limiting platform 533, preventing the rack 53 from resetting and maintaining the stability of the isolation.

[0087] In this embodiment, the protective component 3 includes:

[0088] The base plate 31 is fixed to the lower end face of the protective box 1;

[0089] Multiple disconnection assemblies 32 are configured and slidably disposed on the base plate 31, and correspond one-to-one with the multiple battery packs 4.

[0090] In a preferred embodiment, the decanting assembly 32 includes:

[0091] The mounting plate 33 is slidably mounted on the base plate 31 using multiple sliding columns 34, and a support spring is provided between the sliding columns 34 and the base plate 31.

[0092] The tripping gear is rotatably mounted on the base plate 31 and located in the middle of the mounting plate 33;

[0093] The support column 35 is slidably disposed within the tripping gear;

[0094] Two support platforms 36 are configured and fixed between the support column 35 and the base plate 31 respectively, and the two support platforms 36 are arranged opposite to each other.

[0095] Two limit buckles 37 are configured and both are fixed on the base plate 31;

[0096] The release rack 38 is slidably disposed within the two limit buckles 37 and meshes with the release gear. A release groove is provided at the bottom of one end of the release rack 38.

[0097] The positioning component 39 is installed inside the base plate 31 and corresponds to the release groove.

[0098] It should be noted that a release spring is provided between the bottom of the release rack 38 and the base plate 31. The release spring is used to drive the release rack 38 to slide.

[0099] In a preferred embodiment, the upper and lower end faces of the support platform 36 are divided into platform one and platform two. The diameter of platform one is smaller than the diameter of platform two, and platform one and platform two are eccentrically arranged. Platform two is coaxial with the support column 35.

[0100] It should be noted that the initial state of the two support platforms 36 is that the platform surfaces are in contact with each other to support each other, thereby preventing the mounting plate 33 from sliding. Furthermore, the sliding column 34, through the support spring, causes the mounting plate 33 to have an upward sliding tendency, thereby reducing the support strength of the support platform 36.

[0101] In a preferred embodiment, the positioning component 39 includes:

[0102] The positioning switch 391 is hinged inside the base plate 31, and a torsion spring is sleeved at the hinge position. When the torsion spring is not subjected to external force, the positioning switch 391 is away from the tripping groove.

[0103] The pressing rod 392 is slidably disposed within the base plate 31, and a pressing spring 393 is disposed between the pressing rod and the base plate 31. The elasticity of the pressing spring 393 is greater than that of the torsion spring.

[0104] The second magnetic switch is fixed inside the base plate 31 and corresponds to the pressing rod 392.

[0105] In other words, when the temperature of battery pack 4 is abnormal, magnetic switch 2 is energized, attracting the pressing rod 392 and moving it away from positioning switch 391. At this time, positioning switch 391 disengages from the trip slot via torsion spring. Then, trip rack 38 slides via trip spring, causing trip gear to drive support column 35 to rotate, causing misalignment of the two support platforms 36. At this time, mounting plate 33 slides down under the weight of battery pack 4, causing battery pack 4 to disengage from contact plate 8, completing the power-off operation and reducing the risk of short circuit.

[0106] Specifically, firstly, the temperature sensor monitors in real time. When the temperature of a battery pack 4 exceeds the threshold abnormally, a signal is triggered to the control unit. At this time, the drive component 5 is activated by the magnetic switch, and the rack 53 drives the isolation plate 64 to rotate, isolating the faulty battery pack 4. Then, the flame-retardant box injects flame-retardant gas into the isolation area through the pipe to suppress the combustion reaction and cool the battery. At the same time, the tripping rack 38 in the release component 32 is released from the limit through the positioning component 39, driving the support column 35 to rotate, causing the two support platforms 36 to disengage, cutting off the circuit connection of the battery pack 4, and completing the protection of the battery pack 4.

[0107] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A battery protection device for new energy mining trucks, characterized in that: include: The protective box (1) has multiple cooling fans fixed on its outside; The protective component (3) is fixed to the lower end face of the protective box (1); The battery packs (4) are configured in multiples, equidistantly arranged inside the protective box (1), and fixedly connected to the protective assembly (3); The drive assembly (5) is fixed in the middle position of the protective box (1); The isolation components (6) are configured in multiples, symmetrically arranged on both sides of the drive component (5), and located between the multiple battery packs (4); A cover plate (7) is fixed to the upper surface of the protective box (1), and a plurality of contact plates (8) are slidably provided at the lower end of the cover plate (7). The plurality of contact plates (8) correspond to a plurality of battery packs (4). A contact spring is provided between the contact plate (8) and the cover plate (7). The contact spring is used to press the contact plate (8) and the battery pack (4) together. Temperature sensors are configured in multiple units, fixed on the cover plate (7), and correspond to multiple battery packs (4); The flame-retardant box is fixed to the upper surface of the cover plate (7) and is connected to the interior of the protective box (1) through multiple pipes. The flame-retardant box contains flame-retardant gas. The isolated component (6) includes: The isolation frame (61) is fixed on the drive assembly (5), and the inner walls of its upper and lower end faces are provided with sealing grooves (62); Multiple rotating shafts (63) are configured to rotatably reside within the isolation frame (61); An isolation plate (64) is fixed on the rotating shaft (63), and sealing plates (65) are symmetrically fixed at both ends of the isolation plate; Synchronous pulleys (66) are fixed to one end of the shaft (63) near the drive assembly (5), and the multiple synchronous pulleys (66) are driven by synchronous belts; The protective component (3) includes: The base plate (31) is fixed to the lower end face of the protective box (1); Multiple tripping assemblies (32) are configured to slide on the base plate (31) and correspond one-to-one with the multiple battery packs (4); The tripping assembly (32) includes: The mounting plate (33) is slidably mounted on the base plate (31) by multiple sliding columns (34), and a support spring is provided between the sliding columns (34) and the base plate (31); The tripping gear is rotatably mounted on the base plate (31) and located in the middle of the mounting plate (33); The support column (35) is slidably disposed within the tripping gear; The support platform (36) is configured as two, which are respectively fixed between the support column (35) and the base plate (31), and the two support platforms (36) are arranged opposite to each other; Two limit buckles (37) are configured and fixed on the base plate (31); The release rack (38) is slidably disposed within the two limit buckles (37) and meshes with the release gear. A release groove is provided at the bottom of one end of the release rack (38). The positioning component (39) is installed in the base plate (31) and corresponds to the release groove.

2. The new energy mining truck battery protection device according to claim 1, characterized in that: The driving component (5) includes: A partition plate (51) is fixed inside the protective box (1); A drive gear (52) is fixed on one of the shafts (63); The rack (53) is slidably disposed within the partition plate (51); The limiting component (54) is fixed inside the partition plate (51); Magnetic switch one is fixed inside the partition plate (51) and corresponds to the rack (53).

3. The new energy mining truck battery protection device according to claim 2, characterized in that: One end of the rack (53) is connected to a tension spring (531), and the other end is fixed with a limiting platform (533). A limiting groove (532) is formed between the limiting platform (533) and the rack (53). A magnetic component is fixed at the end of the limiting platform (533) away from the rack (53), and the magnetic component corresponds to the magnetic switch.

4. The battery protection device for a new energy mining truck according to claim 3, characterized in that: The limiting component (54) includes: A fixed frame (541) is fixed inside the partition plate (51); An electromagnet (542) is fixed at the middle position of the fixed frame (541); Two sliding plates (543) are configured to slide symmetrically within the fixed frame (541), located on the upper and lower sides of the electromagnet (542), and a limit spring (544) is provided between them and the fixed frame (541). The limiting plate (545) is fixed on the sliding plate (543) and contacts the limiting groove (532) for limiting.

5. The new energy mining truck battery protection device according to claim 1, characterized in that: The upper and lower end faces of the support platform (36) are divided into platform one and platform two. The diameter of platform one is smaller than the diameter of platform two. Platform one and platform two are eccentrically arranged. Platform two is coaxial with the support column (35).

6. The battery protection device for a new energy mining truck according to claim 1, characterized in that: The positioning component (39) includes: The positioning switch (391) is hinged in the base plate (31), and a torsion spring is sleeved at the hinge position. When the torsion spring is not subjected to external force, the positioning switch (391) is away from the tripping groove. The pressing rod (392) is slidably disposed in the base plate (31), and a pressing spring (393) is disposed between the pressing rod (392) and the base plate (31), wherein the elasticity of the pressing spring (393) is greater than that of the torsion spring; The second magnetic switch is fixed inside the base plate (31) and corresponds to the pressing rod (392).

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