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CN-122000592-A - Battery pack with thermal runaway prevention and control structure

CN122000592ACN 122000592 ACN122000592 ACN 122000592ACN-122000592-A

Abstract

The invention discloses a battery pack with a thermal runaway prevention and control structure, which relates to the technical field of battery packs and comprises a battery pack box body, wherein a longitudinal beam is arranged on the inner wall of the battery pack box body, a plurality of groups of electric cores are arranged on one side of the longitudinal beam, a first mounting plate is arranged on the top of the battery pack box body, a second mounting plate is lapped on the top of the first mounting plate, and a sealing top cover is arranged on the top of the second mounting plate.

Inventors

  • XI SHANGJUN

Assignees

  • 席尚军

Dates

Publication Date
20260508
Application Date
20260210

Claims (10)

  1. 1. The utility model provides a battery package that possesses thermal runaway prevention and control structure, includes battery package box (1), its characterized in that, vertical crossbeam (2) are installed to the inner wall of battery package box (1), multiunit electric core (3) are all installed to the one side that the inner wall of battery package box (1) is located vertical crossbeam (2), first mounting panel (4) are installed at the top of battery package box (1), the top overlap joint of first mounting panel (4) has second mounting panel (5), sealed top cap (6) are installed at the top of second mounting panel (5); The utility model provides a sealed top cap (6)'s inner wall installs multiunit storage case (7), assembly box (8) are installed to the inner wall of storage case (7), pump body (9) are installed to the inner wall of assembly box (8), extraction pipe (10) are installed to the input of pump body (9), and the one end of extraction pipe (10) is pegged graft in the inner wall of storage case (7), output tube (11) are installed to the output of pump body (9), ferrule (12) are installed on the top of output tube (11), the inner wall of ferrule (12) runs through pegging graft and has conveyer pipe (13), shower nozzle (14) are all installed to the both sides of conveyer pipe (13), and the bottom of shower nozzle (14) sets up in the top of electricity core (3), conveyer is installed to the inner wall of ferrule (12), temperature sensor (15) are installed to one side of ferrule (12), temperature sensor (16) are installed to the other end of ferrule (12), and equal electric connection each other between smoke sensor (15) and smoke sensor (16) and the conveyer.
  2. 2. The battery pack with the thermal runaway prevention and control structure according to claim 1, wherein a first socket frame (17) is installed on one side of the sealing top cover (6), and a controller (18) is installed on the inner wall of the first socket frame (17).
  3. 3. The battery pack with the thermal runaway prevention and control structure according to claim 1, wherein a partition plate (19) is installed on the inner wall of the seal top cover (6), the partition plate (19) is located between the storage box (7) and the sleeve pipe (12), a plurality of groups of first mounting holes (20) are formed in the top of the second mounting plate (5) in a penetrating mode, and fixing bolts (21) are connected to the inner wall of the first mounting holes (20) in a threaded mode.
  4. 4. A battery pack with a thermal runaway prevention and control structure according to claim 3, characterized in that a plurality of groups of second mounting holes (22) are formed through the top of the first mounting plate (4), and the second mounting holes (22) are in threaded fit with the fixing bolts (21).
  5. 5. The battery pack with the thermal runaway prevention and control structure according to claim 1, wherein a second socket frame (23) is installed on one side of the battery pack box body (1), a transformer main body (24) is installed on the inner wall of the second socket frame (23), and an electric connection port (25) is installed on one side of the second socket frame (23).
  6. 6. The battery pack with the thermal runaway prevention and control structure according to claim 1, wherein an injection pipe (26) is installed at the top of the sealing top cover (6), a sealing cover (27) is connected to the top end of the injection pipe (26) in a threaded manner, and the bottom end of the injection pipe (26) is inserted into the inner wall of the storage box (7).
  7. 7. The battery pack with the thermal runaway prevention and control structure according to claim 1, further comprising a thermal runaway detection and judgment system for receiving and processing signals collected by the temperature sensor (15) and the smoke sensor (16) and judging that a thermal runaway state is triggered when the temperature exceeds a preset threshold and smoke is detected at the same time.
  8. 8. The battery pack with the thermal runaway prevention and control structure according to claim 1, further comprising a medium release control system, wherein the medium release control system is used for automatically controlling the pump body (9) to start after the thermal runaway detection and judgment system judges triggering, and spraying the medium in the storage box (7) to the battery cell (3) through the conveying pipe (13) and the spray head (14).
  9. 9. The battery pack with the thermal runaway prevention and control structure according to claim 2, further comprising a system state feedback system which communicates with an external device through a controller (18) for uploading or displaying at least one of information of a determination state of the thermal runaway detection and determination system, a start-stop state of the pump body (9), and a medium remaining state.
  10. 10. A battery pack with a thermal runaway prevention and control structure according to claim 2, further comprising a system self-test and fault diagnosis system that periodically or in response to external instructions detects the electrical connection and functional status of the temperature sensor (15), the smoke sensor (16), the pump body (9) and the controller (18) and generates a corresponding status report or fault code.

Description

Battery pack with thermal runaway prevention and control structure Technical Field The invention relates to the technical field of battery packs, in particular to a battery pack with a thermal runaway prevention and control structure. Background With the rapid development of the electric automobile industry and the acceleration of the construction of energy storage power stations, the safety and reliability of the battery pack serving as a core component for energy storage and conversion become key factors for restricting the further development of the industry, particularly when high-rate charge and discharge, extreme environmental temperature or battery internal faults occur, the risk of the battery Bao Re being out of control is obviously increased, serious safety accidents such as fire and explosion can be caused, and at present, the industry mainly relies on passive heat dissipation modes (such as natural cooling, air cooling and liquid cooling) and an alarm system based on a single temperature parameter to manage the thermal safety of the battery pack, and the methods are not attractive when dealing with complex and changeable thermal runaway scenes. However, the defect in the prior art is that the thermal runaway monitoring and prevention mechanism is too dependent on a single temperature sensor, and the comprehensive sensing capability of multiple physical field changes in the initial stage of thermal runaway is lacking, and the early symptoms of smoke, gas and the like generated by electrolyte decomposition, material pyrolysis and the like accompanying the thermal runaway process of the battery cannot be captured in time by single temperature parameter monitoring, so that an early warning system is difficult to accurately judge and start effective intervention measures in the initial stage of thermal runaway, and the limitation makes the conventional battery pack often only take post-remedial measures when facing an emergency of thermal runaway, but cannot realize active inhibition in the early stage of thermal runaway, thereby seriously threatening the safe operation of the battery pack and the whole system, and therefore the improvement of the early warning system is needed. Disclosure of Invention The invention aims to provide a battery pack with a thermal runaway prevention and control structure, which solves the problems that in the prior art, a thermal runaway monitoring and prevention and control mechanism is too dependent on a single temperature parameter, so that accurate identification and active intervention are difficult to realize in an early stage of thermal runaway. In order to achieve the above purpose, the invention provides a battery pack with a thermal runaway prevention and control structure, which comprises a battery pack box body, wherein a longitudinal beam is arranged on the inner wall of the battery pack box body, a plurality of groups of battery cells are arranged on one side of the longitudinal beam, which is positioned on the inner wall of the battery pack box body, a first mounting plate is arranged on the top of the battery pack box body, a second mounting plate is lapped on the top of the first mounting plate, and a sealing top cover is arranged on the top of the second mounting plate; The inner wall of sealed top cap installs multiunit storage case, the assembly box is installed to the inner wall of storage case, the pump body is installed to the inner wall of assembly box, the extraction pipe is installed to the input of the pump body, and the one end of extraction pipe peg graft in the inner wall of storage case, the output tube is installed to the output of the pump body, the ferrule is installed on the top of output tube, the inner wall of ferrule runs through the grafting and has the conveyer pipe, the shower nozzle is all installed to the both sides of conveyer pipe, and the bottom of shower nozzle sets up in the top of electric core, the conveyer is installed to the inner wall of ferrule, temperature sensor is installed to one side of ferrule, smoke transducer is installed to the other end of ferrule, and mutual electric connection between temperature sensor and the equal and conveyer of smoke transducer. Further, a first sleeving frame is arranged on one side of the sealing top cover, and a controller is arranged on the inner wall of the first sleeving frame. Further, the partition plate is installed to the inner wall of sealed top cap, the partition plate is located between storage box and the ferrule, the first mounting hole of multiunit has been run through at the top of second mounting panel, the inner wall threaded connection of first mounting hole has fixing bolt. Further, a plurality of groups of second mounting holes penetrate through the top of the first mounting plate, and the second mounting holes are matched with the fixing bolts through threads. Further, a second sleeving frame is arranged on one side of the battery pack box body, a transformer m