Energy storage device with protection function

Abstract

The present application relates to the technical field of battery, especially relates to a kind of energy storage device with protection function, technical scheme includes: the trigger component between processing component and battery pack;Trigger component includes: fixedly connected on the battery pack fuse rope;Slidably connected on the fixed plate moving plate;Fixedly connected between the first spring of moving plate and fixed plate;Rotatably connected on the battery pack rotating arm;Fixedly connected between the torsional spring of rotating arm and battery pack.The present application is broken in response to the thermal runaway condition of battery pack with fuse rope, and uses fuse rope to control the force storage of first spring and torsional spring, so that after the breakage of fuse rope, first spring and torsional spring can quickly react, transmission control control pipe is connected storage tank and spray nozzle, the material stored in storage tank is sprayed on battery pack, timely prevents battery pack from further evolution and occurs combustion or even explosion, to improve the safety of the present application.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to an energy storage device with protective functions. Background Technology

[0002] Lithium-ion batteries, with their superior high energy density and environmental performance, have become the core energy source for new energy vehicles. The performance of energy storage devices directly determines the vehicle's range and safety, and is one of the technological cornerstones for the large-scale development of new energy vehicles.

[0003] Thermal runaway is an uncontrollable temperature rise in an energy storage device caused by an internal exothermic chain reaction. It is usually caused by multiple factors such as compression and collision, overcharging and over-discharging, and internal short circuits to external circuits. Once thermal runaway occurs, the temperature inside the energy storage device can rise sharply to over 800°C, rapidly causing a fire or even an explosion, affecting the entire battery pack. This not only threatens the lives of passengers and may also damage the vehicle, potentially causing secondary disasters on public roads or charging sites, resulting in catastrophic consequences.

[0004] Existing technologies rely on external sensors or voltage monitoring for early warning, but their protection mechanisms are passive: external rescue can only be triggered after information indicating that the battery has experienced thermal runaway has been obtained through detection methods. This approach suffers from timeliness bottlenecks: firstly, there is a time delay between the occurrence and identification of thermal runaway; secondly, the rescue system requires preparation time to respond. In actual operation, by the time an anomaly is detected, the golden opportunity to suppress the spread of thermal runaway has often been missed. Summary of the Invention

[0005] In view of the deficiencies of the prior art mentioned in the background section, the present invention proposes an energy storage device with protective function that can react quickly and provide protection.

[0006] The technical solution of the present invention is as follows: an energy storage device with protective function, comprising: a housing and a battery pack; further comprising: a processing component disposed on the housing; and a triggering component disposed between the processing component and the battery pack;

[0007] The processing components include: a mounting plate fixedly connected to the housing; a nozzle fixedly connected to the mounting plate, the nozzle facing the battery pack; a connecting pipe fixedly connected to the mounting plate; a control pipe rotatably connected to the connecting pipe; and a storage tank fixedly connected to the housing, the connecting pipe communicating with the storage tank.

[0008] The triggering component includes: a fuse cord fixedly connected to the battery pack; a movable plate slidably connected to the fixed plate, the movable plate being drivenly connected to the control tube; a first spring fixedly connected between the movable plate and the fixed plate; a rotating arm rotatably connected to the battery pack, the rotating arm being able to restrict the movement of the movable plate; and a torsion spring fixedly connected between the rotating arm and the battery pack, the fuse cord being fixed to the end of the rotating arm.

[0009] Furthermore, it is particularly preferred that the processing components are provided in two sets, respectively located on both sides of the battery pack, and that each set of processing components is provided with at least one set of triggering components between it and the battery pack.

[0010] Furthermore, it is particularly preferred that each fusible rope is integrally formed.

[0011] Furthermore, it is particularly preferred that the battery pack also includes: a power control component disposed on the battery pack, the power control component being connected to the fuse cord;

[0012] The power control assembly includes: a mounting base fixedly connected to the battery pack; a wedge block slidably connected to the mounting base; a connecting ring fixedly connected to the wedge block, through which a fuse rope passes; a second spring fixedly connected between the wedge block and the mounting base; a fixing sleeve fixedly connected to the battery pack, with the fixing sleeves located on both sides of the mounting base; a signal electrode slidably connected to the two fixing sleeves, the signal electrode being electrically connected to the battery pack; and a third spring fixedly connected between the signal electrode and the fixing sleeve.

[0013] Furthermore, it is particularly preferred that the power control components are arranged on both sides of the battery pack, with at least two sets on each side.

[0014] Furthermore, it is particularly preferred that the battery pack also includes a protective component disposed outside the battery pack;

[0015] The protective components include: an inner plate fixedly connected to the side wall of the battery pack; a core plate slidably connected to the inner plate; an outer plate fixedly connected to the outer casing; a fixing frame fixedly connected to the inner casing; a turntable rotatably connected to the fixing frame; a second gear fixedly connected to the turntable; a rack fixedly connected to the outer plate, the rack meshing with the second gear, the rack having a toothless section; a coil spring fixedly connected between the turntable and the fixing frame; and a connecting arm rotatably connected between the turntable and the core plate, the connection point of the connecting arm and the turntable being offset from the center of the turntable.

[0016] Furthermore, it is particularly preferred that the core board has raised textures.

[0017] Furthermore, it is particularly preferred that the device also includes a replacement component disposed on the storage box;

[0018] The replacement components include: mounting rings fixedly connected to both sides of the storage box, which are detachably fixed to the outer shell using the mounting rings; a guide shaft fixedly connected inside the storage box; a sealing block slidably connected to the guide shaft, which closes the opening of the storage box; and a fourth spring fixedly connected between the guide shaft and the sealing block.

[0019] The beneficial effects of this invention are as follows: This invention responds to battery thermal runaway by breaking a fusible rope. The fusible rope controls the first spring and torsion spring to store energy, allowing the first spring and torsion spring to react quickly after the fusible rope breaks, transmitting power to the control tube to connect the storage tank and the nozzle. This sprays the material stored in the storage tank onto the battery pack, promptly preventing further combustion or even explosion, thus improving the safety of the invention. This invention uses a series of transmissions between the fusible rope and the wedge block to separate the control signal electrodes. The fusible rope, by controlling the second and third springs to store energy, allows the second and third springs to react quickly after the fusible rope breaks, connecting the control signal electrodes. This signal then controls the battery pack to shut down, thus addressing battery thermal runaway from the battery pack's perspective, further improving the safety of the invention. This invention uses protective components to deal with sharp objects. When a sharp object occurs, the relative displacement controls the pre-stored coil spring to release force and manipulate the core plate's movement, affecting the direction and force of the sharp object, reducing injury from sharp objects and improving the safety of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention after the outer shell is hidden.

[0022] Figure 3 This is a diagram showing the separation of the connection structure between the processing component and the triggering component in this invention.

[0023] Figure 4 This is a cross-sectional view of the connection structure of the processing component in this invention.

[0024] Figure 5 This is a diagram showing the connection structure of the trigger component in this invention.

[0025] Figure 6 This is a schematic diagram showing the location and structure of the electrical control component in this invention.

[0026] Figure 7 This is a cross-sectional view of the connection structure of the electrical control component in this invention.

[0027] Figure 8 This is a schematic diagram showing the location and structure of the protective component in this invention.

[0028] Figure 9 This is a diagram showing the separation of the connection structure of the protective component in this invention.

[0029] Figure 10 This is a schematic diagram of the connection structure of a local component in the protection assembly of the present invention.

[0030] Figure 11This is an elevation view showing the position of the replacement component on the storage box in this invention.

[0031] Figure 12 This is a cross-sectional view of the cooperative structure of the replacement component and the processing component in this invention.

[0032] In the diagram: 01, outer casing; 02, battery pack; 11, mounting plate; 12, nozzle; 13, connecting pipe; 1301, nozzle; 14, control pipe; 1401, port; 15, storage tank; 1501, docking groove; 21, fusible rope; 2101, fixing ring; 22, moving plate; 2201, guide rod; 23, first spring; 24, toothed block; 25, first gear; 26, rotating arm; 2601, limiting groove; 2602. 27. Bracket, 31. Torsion spring, 32. Mounting base, 33. Wedge block, 34. Connecting ring, 35. Second spring, 36. Fixing sleeve, 37. Signal electrode, 38. Third spring, 49. Inner plate, 40. Core plate, 41. Rough edge, 42. Outer plate, 43. Fixing bracket, 44. Turntable, 45. Second gear, 46. Rack, 47. Coil spring, 48. Connecting arm, 59. Mounting ring, 50. Guide shaft, 51. Sealing block, 52. Fourth spring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0034] Example: An energy storage device with protective functions, see [reference] Figures 1-2 As shown, it includes: a housing 01; and a battery pack 02 fixedly installed inside the housing 01, which realizes energy conversion and storage.

[0035] See Figures 1-4As shown, it also includes: a processing assembly for handling thermal runaway of the battery pack 02, disposed on the outer casing 01. Two sets of processing assemblies are provided, respectively disposed on the upper and lower sides of the battery pack 02, to improve the processing uniformity and efficiency. Each processing assembly includes: a fixing plate 11 fixedly installed inside the outer casing 01, wherein the fixing plates 11 of the two processing assemblies are respectively disposed on the upper and lower sides of the battery pack 02; a nozzle 12 fixedly installed on the fixing plate 11, the nozzle 12 facing the battery pack 02; and connecting pipes 13 fixedly installed on the fixing plate 11, each fixing plate 11 having three sets of connecting pipes 13, and each connecting pipe 13 having five sets of nozzles at its top. 1301; A control pipe 14 is rotatably installed inside the connecting pipe 13. The control pipe 14 is provided with a port 1401. The nozzle 1301 communicates with the spray nozzle 12 through the port 1401. The control pipe 14 rotates to control whether the port 1401 connects the nozzle 1301 and the spray nozzle 12; A storage box 15 is fixedly installed on the outer shell 01. The storage box 15 is used to store flame-retardant and cooling materials, such as heat-absorbing phase change materials and flame-retardant extinguishing agents. The bottom of the storage box 15 is provided with a docking groove 1501. The docking groove 1501 is docked with the connecting pipe 13. The nozzle 1301 is inserted into the storage box 15 so that the connecting pipe 13 communicates with the storage box 15 through the nozzle 1301.

[0036] When the inlet 1401 is in the state of not connecting the nozzle 1301 and the spray nozzle 12, the storage tank 15 is closed by the control tube 14. After rotating the control tube 14, the inlet 1401 is rotated to connect the nozzle 1301 and the spray nozzle 12, the material in the storage tank 15 can be sprayed onto the battery pack 02 by the spray nozzle 12, thereby cooling and flame-retardant treatment of the battery pack 02, preventing the battery pack 02 from further evolving into combustion due to thermal runaway, and preventing excessive combustion from causing an explosion.

[0037] See Figure 2 , Figure 3 and Figure 5As shown, it also includes: a triggering component disposed between the processing component and the battery pack 02. The triggering component is used to activate the processing component. Two sets of triggering components are provided between each processing component and the battery pack 02 to increase the stability of the triggering component controlling the processing component. The triggering component includes: a fixing ring 2101 fixedly installed on the battery pack 02; a fuse rope 21 passing through the fixing ring 2101, which will melt and break when the battery pack 02 thermally runs away; a guide rod 2201 fixedly installed on the fixing plate 11; a movable plate 22 slidably installed on the guide rod 2201; a first spring 23 sleeved on the guide rod 2201, with both ends of the first spring 23 fixedly installed on the movable plate 22 and the guide rod 2201, respectively; and a fixed plate 22 installed on the movable plate 22. Each movable plate 22 has three toothed blocks 24; a first gear 25 is rotatably mounted on the side of each connecting pipe 13, and the first gear 25 on each connecting pipe 13 is coaxially fixed with the control pipe 14. The position of each toothed block 24 corresponds to the position of each first gear 25 and they mesh one by one; a bracket 2602 is fixedly mounted on the battery pack 02; a rotating arm 26 is rotatably mounted on the bracket 2602, and a fusible rope 21 is fixed to the end of the rotating arm 26; a limiting groove 2601 is provided on the movable plate 22, and the rotating arm 26 can rotate to be locked in the limiting groove 2601 to limit the movement of the movable plate 22; a torsion spring 27 is sleeved on the shaft of the rotating arm 26, and the two ends of the torsion spring 27 are respectively fixed on the rotating arm 26 and the bracket 2602.

[0038] Under normal conditions, the fuse rope 21 is taut, and one end of the rotating arm 26 is fixed in position by the fuse rope 21, so the rotating arm 26 cannot rotate. One end of the rotating arm 26 is stuck in the limiting groove 2601, so the position of the moving plate 22 is restricted. At this time, the first spring 23 and the torsion spring 27 deform. Once the battery experiences thermal runaway, its temperature will far exceed the normal heating range of the battery pack 02. At this time, the fuse rope 21 will break, and the torsion spring 27 will recover and control the rotation of the rotating arm 26, and disengage its end from the limiting groove 2601, freeing it from the restriction on the moving plate 22. Then the first spring 23 can recover and control the movement of the moving plate 22. Under the transmission of the tooth block 24 and the first gear 25, the control tube 14 rotates, connecting the port 1401 to the nozzle 1301 and the spray nozzle 12. Therefore, the material pre-stored in the storage box 15 can be sprayed onto the battery pack 02 to prevent the battery pack 02 from further evolving into combustion or even explosion, thereby improving personal and property safety.

[0039] See Figure 2 , Figure 6 and Figure 7As shown, it also includes: a power control assembly disposed on the battery pack 02, the power control assembly being connected to the fuse rope 21, the power control assembly being used to control the battery pack 02 to shut down in the event of thermal runaway; five sets of power control assemblies are disposed on the upper and lower sides of the battery pack 02 to increase control accuracy; the power control assembly includes: a mounting base 31 fixedly mounted on the battery pack 02; a wedge 32 slidably mounted on the mounting base 31; a connecting ring 33 fixedly mounted on the wedge 32, through which the fuse rope 21 passes; and a second spring 34 sleeved on the wedge 32. The two ends of the second spring 34 are fixed to the wedge block 32 and the mounting base 31, respectively; the fixing sleeve 35 is fixedly installed on the battery pack 02, and the fixing sleeve 35 is located on both sides of the mounting base 31; the signal electrode 36 is slidably installed on the two fixing sleeves 35, and the signal electrode 36 is electrically connected to the battery pack 02. After the two signal electrodes 36 come into contact, a signal will be transmitted to control the battery pack 02 to shut down; the third spring 37 is sleeved on the signal electrode 36, and the two ends of the third spring 37 are fixed to the signal electrode 36 and the fixing sleeve 35, respectively.

[0040] In normal conditions, the wedge 32 is located between the two signal electrodes 36, which are separated. The third spring 37 is compressed, and the taut fuse rope 21 restricts the position of the wedge 32 through the connecting ring 33, keeping the second spring 34 stretched. When the battery pack 02 experiences thermal runaway and the fuse rope 21 breaks, the wedge 32 loses the restriction of the fuse rope 21 and is moved back to its original position by the second spring 34. The two signal electrodes 36 approach each other and connect under the restoring action of the third spring 37. Therefore, the battery pack 02 is controlled to shut down, thereby preventing the thermal runaway of the battery pack 02 from developing further. That is, the thermal runaway of the battery pack 02 is controlled and handled from the perspective of the battery pack 02.

[0041] See Figure 1 , Figure 2 , Figure 8 , Figure 9 and Figure 10As shown, it also includes: a protective assembly disposed outside the battery pack 02, the protective assembly being used to protect the battery pack 02 from sharp damage, the protective assembly being disposed in four groups, respectively disposed on the four sides of the battery pack 02, the protective assembly including: an inner plate 41 fixedly mounted on the side wall of the battery pack 02; a core plate 42 slidably mounted on the inner plate 41, the core plate 42 being provided with raised texture 4201; an outer plate 43 snapped onto the outer casing 01; two fixing brackets 44 fixedly mounted inside the outer casing 01; and rotatably mounted on each fixing bracket. Two turntables 45 on 44; a second gear 46 fixedly installed on each turntable 45; a rack 47 fixedly installed on the inner side of the outer plate 43, the rack 47 meshing with the second gear 46, the rack 47 having a toothless section; a coil spring 48 sleeved on the turntable 45, the inner and outer ends of the coil spring 48 being fixed on the turntable 45 and the fixing frame 44 respectively; a connecting arm 49 rotatably installed between the turntable 45 and the core plate 42, the connection point of the connecting arm 49 and the turntable 45 being offset from the center of the turntable 45.

[0042] In normal conditions, the coil spring 48 is in a twisted, or stored, state, and the rack 47 prevents the turntable 45 from rotating by restricting the second gear 46. When subjected to sharp object damage, two possibilities arise: First, the force of the sharp object cannot penetrate the outer plate 43, thus the outer plate 43 provides surface protection. Second, the force of the sharp object will penetrate the outer plate 43, and the sharp object will come into contact with the core plate 42. During this process, the outer plate 43 will be pushed by the force of the sharp object, disengaging from the outer casing 01 and displacing, causing the rack 47 to displace and disengage from the second gear 46. At this time, the coil spring 48 recovers and controls the turntable 45 to rotate. Under the eccentric control of the connecting arm 49, the core plate 42 is controlled to move up and down, causing the ridge 4201 to collide with the sharp object, thereby changing the angle of the sharp object and unloading it, reducing the damage caused by the sharp object to the battery pack 02, and improving the safety of the invention.

[0043] See Figure 1 , Figure 11 and Figure 12As shown, it also includes: a replacement component disposed on the storage box 15, which enables the storage box 15 to be detachable, allowing for periodic inspection and replacement of the materials inside the storage box 15, ensuring that the materials can effectively handle the battery pack 02 in the event of actual thermal runaway. The replacement component includes: mounting rings 51 fixedly installed on both sides of the storage box 15, the storage box 15 being detachably fixed to the outer shell 01 by the mounting rings 51 and fixing bolts; a guide shaft 52 fixedly installed inside the storage box 15; a sealing block 53 slidably installed on the guide shaft 52, the sealing block 53 closing the opening of the storage box 15, when the storage box 15 is installed on the outer shell 01, the nozzle 1301 will contact the sealing block 53 and control the sealing block 53 to move and open the opening, at which time the nozzle 1301 passes through the opening into the storage box 15; and a fourth spring 54 sleeved on the guide shaft 52, the two ends of the fourth spring 54 being fixed on the guide shaft 52 and the sealing block 53 respectively.

[0044] When it is necessary to inspect the materials inside the storage box 15, the storage box 15 is removed from the outer shell 01, the storage box 15 is separated from the connecting pipe 13, and the nozzle 1301 is disengaged from the opening. The sealing block 53 blocks the opening under the restoring action of the fourth spring 54 to prevent material leakage. When the storage box 15 is put back onto the outer shell 01, the nozzle 1301 can open the storage box 15 and connect with it by pushing the sealing block 53.

[0045] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention belong to existing technology known to those skilled in the art.

Claims

1. An energy storage device with protective functions, comprising: The housing (01) and the battery pack (02) are characterized in that: they further include: a processing component disposed on the housing (01) for handling thermal runaway of the battery pack (02); and a triggering component disposed between the processing component and the battery pack (02), the triggering component being used to activate the processing component; The processing components include: a fixed plate (11) fixedly connected inside the housing (01); a nozzle (12) fixedly connected to the fixed plate (11), the nozzle (12) facing the battery pack (02); a connecting pipe (13) fixedly connected to the fixed plate (11); a control pipe (14) rotatably connected inside the connecting pipe (13), the rotatable control pipe (14) controlling whether the connecting pipe (13) is connected to the nozzle (12); and a storage box (15) fixedly connected to the housing (01), the storage box (15) being used to store flame-retardant and cooling materials, the connecting pipe (13) communicating with the storage box (15); The triggering components include: a fuse rope (21) fixedly connected to the battery pack (02), which will melt when the battery pack (02) thermally runs away; a movable plate (22) slidably connected to the fixed plate (11), which is connected to the control tube (14) in a transmission manner, and the movable plate (22) moves to control the rotation of the control tube (14); a first spring (23) fixedly connected between the movable plate (22) and the fixed plate (11); a rotating arm (26) rotatably connected to the battery pack (02), which can restrict the movement of the movable plate (22), and the first spring (23) is in a stored state when the rotating arm (26) restricts the movement of the movable plate (22); and a torsion spring (27) fixedly connected between the rotating arm (26) and the battery pack (02), with the fuse rope (21) fixed to the end of the rotating arm (26) so that the torsion spring (27) is in a stored state. The processing components are provided in two sets, respectively located on both sides of the battery pack (02), and each set of processing components is provided with at least one set of triggering components between the battery pack (02); Each fuse rope (21) is integrally formed; It also includes: a power control component installed on the battery pack (02), the power control component is used to control the battery pack (02) to shut down, and the power control component is connected to the fuse rope (21); The power control assembly includes: a mounting base (31) fixedly connected to the battery pack (02); a wedge (32) slidably connected to the mounting base (31); a connecting ring (33) fixedly connected to the wedge (32), through which a fuse rope (21) passes; a second spring (34) fixedly connected between the wedge (32) and the mounting base (31); a fixing sleeve (35) fixedly connected to the battery pack (02), the fixing sleeve (35) being disposed on both sides of the mounting base (31); and a slidably connected to the two fixing sleeves (35). Signal electrode (36) is electrically connected to battery pack (02). After the two signal electrodes (36) come into contact, the battery pack (02) will be shut down through signal transmission. The fuse rope (21) controls the wedge block (32) to separate the two signal electrodes (36) through the connecting ring (33), so that the second spring (34) is in a stored state. The third spring (37) is fixedly connected between the signal electrode (36) and the fixed sleeve (35). When the two signal electrodes (36) are separated, the third spring (37) is in a stored state.

2. The energy storage device with protective function as described in claim 1, characterized in that: The power control components are located on both sides of the battery pack (02), with at least two sets on each side.

3. The energy storage device with protective function as described in claim 2, characterized in that: Also includes: A protective component is provided outside the battery pack (02) to protect the battery pack (02) from sharp damage; The protective components include: an inner plate (41) fixedly connected to the side wall of the battery pack (02); a core plate (42) slidably connected to the inner plate (41); an outer plate (43) disposed on the outer casing (01); a fixing frame (44) fixedly connected inside the outer casing (01); a turntable (45) rotatably connected to the fixing frame (44); a second gear (46) fixedly connected to the turntable (45); a rack (47) fixedly connected to the outer plate (43), the rack (47) meshing with the second gear (46), the rack (47) having a toothless section; a coil spring (48) fixedly connected between the turntable (45) and the fixing frame (44), the coil spring (48) being in a charged state; and a connecting arm (49) rotatably connected between the turntable (45) and the core plate (42), the connection point of the connecting arm (49) and the turntable (45) being offset from the center of the turntable (45).

4. The energy storage device with protective function as described in claim 3, characterized in that: The core board (42) is provided with raised texture (4201).

5. An energy storage device with protective function as described in claim 4, characterized in that: Also includes: A replacement component is provided on the storage box (15), which allows the storage box (15) to be removed for inspection and replacement; The replacement components include: mounting rings (51) fixedly connected to both sides of the storage box (15), the storage box (15) being detachably fixed to the outer shell (01) using the mounting rings (51); a guide shaft (52) fixedly connected inside the storage box (15); a sealing block (53) slidably connected to the guide shaft (52), the sealing block (53) closing the opening of the storage box (15), and the connecting pipe (13) communicating with the storage box (15) through the opening; and a fourth spring (54) fixedly connected between the guide shaft (52) and the sealing block (53).

Images