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CN-121989655-A - CTB chassis structure of quick-plug type new energy vehicle

CN121989655ACN 121989655 ACN121989655 ACN 121989655ACN-121989655-A

Abstract

The invention discloses a CTB chassis structure of a quick-plug type new energy vehicle, which comprises a vehicle chassis, a battery module and a water cooling plate, wherein the battery module comprises a plurality of relatively independent battery packs, the battery packs are embedded into the vehicle chassis, a socket for plugging the battery packs is reserved laterally on the vehicle chassis, a floating plug is arranged at the bottom of the socket and is used for being connected with a whole vehicle circuit after a tail end electric connection plug of the battery packs is plugged, and the water cooling plate is attached to each battery pack and is used for exchanging heat with each battery pack to adjust the working temperature of each battery pack. This CTB battery structure possesses the battery pack of polylith independent power supply, guarantees the power take off of the safety and stability of vehicle can be guaranteed to single battery pack work to guarantee vehicle driving system's stability, and can directly change the inside group battery of chassis through the plug, more convenient vehicle maintenance carries out, saves the step that vehicle lifting or internal part were dismantled, increases maintenance efficiency, and reduces maintenance cost, and is stronger to battery module's protectiveness.

Inventors

  • CHEN JIE
  • SHEN FANG
  • TANG LONGJIANG

Assignees

  • 上海火亮新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (11)

  1. 1. The CTB chassis structure of the quick-plug type new energy vehicle is characterized by comprising a vehicle chassis (1), a battery module and a water cooling plate (10); The battery module comprises a plurality of relatively independent battery packs (2) which are embedded into a vehicle chassis (1); A socket (7) for plugging and unplugging the battery pack (2) is reserved laterally on the vehicle chassis (1), and a floating plug (6) is arranged at the bottom of the socket (7) and is used for being connected with a whole vehicle circuit after a tail end electric connection plug (12) of the battery pack (2) is plugged; The water cooling plates (10) are attached to each battery pack (2) and used for exchanging heat with each battery pack (2) and adjusting the working temperature of each battery pack (2).
  2. 2. The CTB chassis structure of the quick-plug type power-changing new energy vehicle according to claim 1, wherein each battery pack (2) is independently provided with a water cooling plate (10), and the water cooling plates (10) are respectively communicated with insertion pipes (5) arranged at the side surfaces of the battery pack (2) and corresponding to the water inlet and the water outlet through connecting pipes.
  3. 3. The CTB chassis structure of the quick-plug type power-changing new energy vehicle, which is disclosed in claim 2, is characterized in that the battery pack (2) and the floating plug (6) are respectively provided with a cannula (5) corresponding to a water inlet and a water outlet, and a quick-plug structure (4) is arranged in the cannula (5); When the floating plug (6) is in butt joint with the tail end of the battery pack (2), the opposite insertion pipe (5) is inserted and communicated through the quick insertion structure (4).
  4. 4. The CTB chassis structure of the quick-plug power-change new energy vehicle of claim 3, wherein the quick-plug structure (4) comprises a plug (410) radially and slidably installed inside the plug (5), one end of the plug (5) behind the plug (410) is plugged by a supporting seat (420), and a spring (430) for pushing the plug (410) to reset and plug a port of the plug (5) is arranged between the supporting seat (420) and the plug (410).
  5. 5. The CTB chassis structure of the quick-plug new energy vehicle as claimed in claim 4, wherein the insertion pipe (5) comprises a thin pipe section (510) at the free end and a thick pipe section (520) connected with the thin pipe section (510); One end of the plug (410) is a flow-dispersing part (4110) and is arranged in the thin pipe section (510) in a sliding manner, and the flow-dispersing part (4110) is provided with a flow guide hole A (4120) opposite to the port of the insertion pipe (5) and a flow guide hole B (4130) arranged on the circumferential surface of the plug (410); the flow-dispersing part (4110) has two position states in the cannula (5): Firstly, the spring (430) is compressed, the flow dispersing part (4110) slides along the thin pipe section (510) to the thick pipe section (520), at the moment, the flow guiding hole B (4130) of the flow dispersing part (4110) is communicated with the thick pipe section (520), and the opposite insertion pipe (5) is in a conducting state; Secondly, the spring (430) is reset, the flow-dispersing part (4110) slides from the thick pipe section (520) to the thin pipe section (510), at the moment, the flow-guiding hole B (4130) of the flow-dispersing part (4110) is closed by the inner wall of the thin pipe section (510), and the opposite insertion pipe (5) is in a closed state.
  6. 6. The CTB chassis structure of the quick-plug new energy vehicle, as set forth in claim 5, wherein the inner wall of the joint section of the thick pipe section (520) and the thin pipe section (510) is an annular cambered surface (8), and the outer ring of the plug (410) is correspondingly provided with a sealing ring (9); after the spring (430) pushes the plug (410) to reset, the truncated cone-shaped sealing ring (9) is attached to the annular cambered surface (8).
  7. 7. The CTB chassis structure of the quick-plug type power-changing new energy vehicle, which is disclosed in claim 1, is characterized in that a guide structure (3) is arranged between the floating plug (6) and the battery pack.
  8. 8. The CTB chassis structure of a quick-plug new energy vehicle as set forth in claim 7, wherein the guiding structure (3) comprises a guiding post (310) vertically and fixedly installed on a shell of a tail part of the battery pack and a guiding hole (320) formed on the floating plug (6).
  9. 9. The CTB chassis structure of the quick-plug type power-changing new energy vehicle, which is disclosed in claim 3, is characterized in that the floating plug (6) and the insertion pipe (5) at the tail end of the battery pack are respectively communicated with the water pump and the water cooling plate (10) through pipe joints (11), and a tortuous flow passage is formed between the pipe joints (11) and the insertion pipe (5).
  10. 10. The CTB chassis structure of the quick-plug-in new energy vehicle, which is disclosed in claim 1, is characterized in that a water cooling plate (10) is paved on the vehicle chassis (1) and covers each battery pack (2) of the battery module, and the water cooling plate (10) is directly communicated with water cooling equipment on the vehicle through a connecting pipe.
  11. 11. The CTB chassis structure of a quick-plug-in new energy vehicle according to claim 10, wherein the water cooling plates (10) are of a double-layer structure, and the battery modules are arranged between the two water cooling plates (10).

Description

CTB chassis structure of quick-plug type new energy vehicle Technical Field The invention belongs to the technical field of CTB battery packs, and particularly relates to a CTB chassis structure of a quick-plug-in power-conversion new energy vehicle. Background The CTB integrates the battery and the vehicle body bottom plate, meanwhile, a module is omitted in the battery, and the battery cell is directly integrated into the battery system. The scheme can greatly reduce the number of parts, reduce the cost, improve the battery grouping efficiency, and further improve the battery capacity and the endurance mileage. The CTB technology has many advantages, so that the CTB technology becomes a decisive key technology in a future period of time, and is a research focus of various large related enterprises at home and abroad. The traditional CTB battery chassis structure omits a middle packet group link by integrating the battery core into the chassis, thereby obviously improving the energy density and the overall performance of the battery packet. However, the existing CTB battery pack also has the defects that the failure of the battery core in a partial area possibly causes the failure of the whole power supply system, the stability of power supply is insufficient, the battery core is integrally packaged in the chassis, the difficulty of battery maintenance and maintenance cost are increased, the flame retardance difficulty is high after the centralized thermal runaway of the battery core, the chassis strength is insufficient and other pain points; In addition, the battery cell is fixed in the chassis after being packaged, so that the battery cell is inconvenient to assemble and disassemble, a user cannot update and use battery cells of any model and brand according to the user-defined vehicle, and along with the increasingly developed battery cell technology, the vehicle battery is also more easily eliminated from the market, so that the user is caused to have economic and use experience loss. Disclosure of Invention The invention aims to provide a CTB chassis structure of a quick-plug-in power-conversion new energy vehicle, which is put into use to solve the problems in the prior art. In order to achieve the aim, the invention provides the technical scheme that the CTB chassis structure of the quick-plug type power conversion new energy vehicle comprises a vehicle chassis, a battery module and a water cooling plate; The battery module comprises a plurality of relatively independent battery packs which are embedded into the chassis of the vehicle; a jack for plugging and unplugging the battery pack is reserved laterally on the vehicle chassis, and a floating plug is arranged at the bottom of the jack and is used for connecting the tail end of the battery pack with a whole vehicle circuit after the tail end of the battery pack is plugged; the water cooling plate is attached to each battery pack and used for exchanging heat with each battery pack, and the working temperature of each battery pack is adjusted. Preferably, the water cooling plate is configured at one side of the battery pack, and the water cooling plate is respectively communicated with the insertion pipe arranged at the side surface of the battery pack and corresponding to the water inlet and the water outlet through the connecting pipe. Preferably, the battery pack and the floating plug are provided with insertion pipes corresponding to the water inlet and the water outlet, and a quick-insertion structure is arranged in the insertion pipes; when the floating plug is in butt joint with the tail end of the battery pack, the opposite insertion tubes are inserted and conducted through the quick insertion structure. Preferably, the quick-plugging structure comprises a plug radially slidably mounted in the insertion pipe, one end of the insertion pipe behind the plug is plugged through a supporting seat, and a spring for pushing the plug to reset and plug an insertion pipe port is arranged between the supporting seat and the plug. Preferably, the cannula comprises a thin tube section at the free end and a thick tube section joined to the thin tube section; One end of the plug is a flow-dispersing part which is arranged in the thin pipe section in a sliding way, and the flow-dispersing part is provided with a flow-guiding hole A opposite to the port of the cannula and a flow-guiding hole B arranged on the circumferential surface of the plug; the flow-dispersing section has two positional states within the cannula: the first step is that the spring is compressed, the flow-dispersing part slides along the thin pipe section to the thick pipe section, at the moment, the flow-guiding hole B of the flow-dispersing part is communicated with the thick pipe section, and the opposite insertion pipe is in a conducting state; secondly, the spring is reset, the flow dispersing part slides from the thick pipe section to the thin pipe section, at the moment, the flow