CN-121983716-A - Carrier loader power battery temperature control system

CN121983716ACN 121983716 ACN121983716 ACN 121983716ACN-121983716-A

Abstract

The invention relates to the technical field of batteries, in particular to a temperature control system of a power battery of a carrier vehicle, which comprises a liquid cooling assembly and an isolation assembly, wherein the liquid cooling assembly comprises a bottom plate and a plurality of partition plates, each partition plate is positioned between two adjacent battery units and is parallel to the two adjacent battery units, and cooling liquid is filled in the partition plates. The isolation assembly comprises a plurality of isolation belts which are annularly distributed around the circumference of the partition plate, the isolation belts are annularly distributed around the circumference of the partition plate, heat of two adjacent battery units can be isolated and buffered, heat of the battery units can be transferred to the partition plate for heat dissipation, each isolation belt consists of a buffer section with good pressure resistance and a heat conduction section with good heat transfer efficiency, in the actual working process, the relative positions of the heat conduction section and the buffer section are adjusted through autorotation of the isolation belt, so that the isolation belt is more prone to isolation or heat conduction, or heat generated by contact of the heat conduction section and the battery units is transferred to the partition plate faster and more efficiently by utilizing reciprocating autorotation of the isolation belt.

Inventors

LI ZHIWEI
WANG JUNLONG
Qin Tongchun
DING XUQIANG
ZHU DANDAN
CUI MEIYING
REN YANLUN
CUI LINGLING

Assignees

南通理工学院

Dates

Publication Date: 20260505
Application Date: 20260403

Claims (10)

1. The temperature control system of the power battery of the carrier vehicle is used for radiating the battery module arranged in the module shell and is characterized by comprising a liquid cooling assembly and an isolation assembly; The battery module comprises a plurality of parallel battery units which are distributed at intervals; The liquid cooling assembly comprises a bottom plate and a plurality of partition plates, the bottom plate is abutted with the plurality of battery units, each partition plate is positioned between two adjacent battery units and parallel to the two adjacent battery units, and the partition plates are communicated with the inside of the bottom plate and used for introducing heat dissipation media; The battery pack comprises a plurality of isolation components, wherein the isolation components are in one-to-one correspondence with the partition plates, each isolation component comprises a plurality of isolation belts which are distributed annularly around the partition plates, the end parts of two adjacent isolation belts are abutted against each other in the circumferential direction of the partition plates, two sides of each isolation belt are respectively contacted with the battery unit and the partition plate surface, each isolation belt comprises a buffer section and a heat conduction section which are sequentially connected along the circumferential direction of each isolation belt, the length of each heat conduction section is not greater than the length of one side edge of each isolation belt, the heat transfer efficiency of each heat conduction section is greater than the heat transfer efficiency of each buffer section, each isolation belt can rotate around the circumferential direction of each isolation belt, and the isolation belts can revolve around the partition plates.
2. The system according to claim 1, wherein the buffer sections of the plurality of separator strips of each separator assembly are driven by the same driving member, the heat conducting sections of the plurality of separator strips of each separator assembly are driven by another driving member, the two driving members drive the buffer sections and the heat conducting sections to revolve around the separator plate in the circumferential direction as a whole when the buffer sections and the heat conducting sections move in the same direction and synchronously in the circumferential direction of the separator plate, and the two driving members drive the buffer sections and the heat conducting sections to rotate around the separator plate in the circumferential direction and roll relative to the battery cells and the separator plate when the buffer sections and the heat conducting sections move in opposite directions and synchronously in the circumferential direction of the separator plate.
3. The vehicle power battery temperature control system according to claim 2, wherein the driving part comprises a motor, a driving wheel, a driving belt and a synchronous belt, connecting columns are arranged on a buffer section and a heat conduction section of each isolation belt, the synchronous belt of one driving part is connected with the connecting columns on the buffer sections of a plurality of isolation belts of the same isolation assembly, the synchronous belt of the other driving part is connected with the connecting columns on the heat conduction sections of a plurality of isolation belts of the same isolation assembly, the driving wheel is rotatably arranged in a module shell and drives the driving wheel to rotate through the driving belt, the driving wheel and the synchronous belt are matched to drive the synchronous belt to synchronously rotate, and the movement amplitude of the buffer section or the heat conduction section in the circumferential direction of the isolation belt is not more than half of the circumferential length of the isolation belt.
4. The vehicle power battery temperature control system according to claim 3, wherein the module housing is fixedly provided with a bottom frame and a top frame, the bottom frame and the top frame are respectively positioned at two sides of the battery module and are positioned at two axial sides of the annular distribution of the isolation assembly, the synchronous belt of each driving piece is respectively provided with two synchronous belts and is respectively arranged at the bottom frame and the top frame, and the driving wheel of each driving piece are respectively arranged at the top frame or the bottom frame.
5. The carrier vehicle power battery temperature control system of claim 4, wherein the bottom frame and the top frame are provided with annular grooves for installing the synchronous belt, and the top frame is also provided with a containing groove for installing the driving wheel and a mounting groove for installing the motor.
6. The vehicle power battery temperature control system according to claim 3, wherein the connecting posts on the heat conducting section are located at one end of the heat conducting section in the axial direction of the isolation belt, and the connecting posts on the heat conducting section and the buffer section of the same isolation belt are distributed in a central symmetry manner in the circumferential direction of the isolation belt.
7. The vehicle power battery temperature control system according to claim 3, wherein the separator has a first state in which the heat conducting section is entirely in contact with the separator, a second state in which the heat conducting section is partially in contact with the separator and partially in contact with the adjacent battery cells and has the same contact area with the separator and the battery cells, and a third state in which the contact area of the heat conducting section with the adjacent battery cells is larger than the contact area with the separator, and the separator is switched to different states by adjusting the moving speed of the driving member driving the buffer section and/or the heat conducting section.
8. The vehicle power cell temperature control system of claim 7, wherein a temperature sensor is provided on each battery cell.
9. The vehicle power cell temperature control system of claim 1, wherein the buffer section is an aerogel blanket for supporting and buffering, and the heat conducting section is a thermally conductive silicon pad for transferring heat.
10. The vehicle power battery temperature control system of claim 8, wherein the separator switches different states according to the temperature of the battery cells, comprising the steps of: Acquiring temperatures of two adjacent battery units at two sides of an isolation assembly, and taking the temperature of one battery unit with higher temperature as a judging temperature T of the isolation assembly; if the temperature T is judged to be in a first temperature interval (T1, T2), the driving piece firstly switches the isolation belt of the isolation assembly from a first state to a second state, and the isolation belt is closer to the second state when the temperature T is higher; if the temperature T is in the second temperature interval (T2, T3), the driving piece enables the isolation belt of the isolation assembly to alternately rotate and revolve, and the isolation belt is switched between the first state and the third state in a reciprocating manner during rotation; If the temperature T is greater than T3, the driving piece firstly switches the isolation belt of the isolation assembly to a first state, and then makes the isolation belt of the isolation assembly revolve around the partition plate; wherein, T1, T2, T3 increase in turn.

Description

Carrier loader power battery temperature control system Technical Field The invention relates to the technical field of batteries, in particular to a temperature control system of a power battery of a carrier vehicle. Background With the rapid development of the new energy automobile industry, the performance requirements of a power battery system serving as a core power source are becoming severe. The power battery can produce a large amount of heat in the course of working, if the heat can not in time dispel, will lead to the inside high temperature of battery module or uneven, can not only accelerate battery ageing, shorten life, still can cause thermal runaway when serious, lead to incident such as conflagration. Therefore, an efficient and reliable battery thermal management system is one of key technologies for guaranteeing safe and stable operation of a vehicle. At present, common battery thermal management schemes are mainly divided into air cooling, liquid cooling, phase change material cooling and the like. Among them, the liquid cooling technology is widely used in battery packs with high energy density due to its high heat exchange efficiency and relatively mature process. Typical liquid cooling system designs typically include a cooling plate in contact with the battery cells or modules and an internally circulated coolant that dissipates heat from the battery modules at the periphery of the battery modules, but because the battery modules are typically comprised of a plurality of cells arranged in a row, adjacent cells are typically separated by spacer pads to buffer the cells to reduce collisions between adjacent cells. For example, in the prior art, the application document with publication number CN120127277a discloses a power battery cooling plate structure and a working method thereof, and by adding a silica gel plate, a gap between a battery module and a seat shell is filled, so that on one hand, a buffering effect is achieved, on the other hand, a contact area between the battery module and the seat shell is increased, and the heat conducting property is improved. But the material of silica gel board is softer, is difficult to guarantee the buffering effect, and can cause bigger damage to whole battery module because of heat transfer when individual electric core is unusual, if increase thickness or select the buffer material of nai extrusion, can influence the battery heat dissipation again. The heat dissipation and buffering functions are opposite, so that potential safety hazards exist in the existing battery module. Disclosure of Invention The invention provides a temperature control system of a power battery of a carrier vehicle, which aims to solve the technical problems. The invention relates to a temperature control system of a power battery of a carrier vehicle, which adopts the following technical scheme: The temperature control system of the power battery of the carrier vehicle is used for radiating a battery module arranged in a module shell and comprises a liquid cooling assembly and isolation assemblies, the battery module comprises a plurality of parallel battery units and a plurality of partition plates, the liquid cooling assembly comprises a bottom plate and a plurality of partition plates, the bottom plate is abutted against the plurality of battery units, each partition plate is arranged between two adjacent battery units and parallel to the two adjacent battery units and communicated with the inside of the bottom plate and used for introducing a radiating medium, the isolation assemblies are in one-to-one correspondence with the partition plates, each isolation assembly comprises a plurality of isolation belts which are circumferentially distributed around the partition plates, the end parts of the two adjacent isolation belts are abutted against each other in the circumferential direction of the partition plates, two sides of each isolation belt are respectively contacted with the battery units and the partition plates, each isolation belt comprises a buffer section and a heat conduction section which are sequentially connected along the circumferential direction of the isolation belts, the length of each heat conduction section is not greater than the length of one side edge of each isolation belt, the heat transfer efficiency of each heat conduction section is greater than that of each buffer section, and each isolation belt can revolve around the partition plates circumferentially around the partition plates. Optionally, the buffer sections of the plurality of isolation belts of each isolation assembly are driven by the same driving piece, the heat conducting sections of the plurality of isolation belts of each isolation assembly are driven by another driving piece, when the buffer sections and the heat conducting sections are driven by the two driving pieces to move in the same direction and synchronously in the circumferential direction of the partition plate,