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CN-121416680-B - Multistage liquid cooling heat abstractor of high density energy storage group battery

CN121416680BCN 121416680 BCN121416680 BCN 121416680BCN-121416680-B

Abstract

The invention discloses a multistage liquid cooling heat dissipation device of a high-density energy storage battery pack, which relates to the technical field of battery liquid cooling heat dissipation and comprises an energy storage mechanism and a liquid cooling mechanism, wherein the liquid cooling mechanism is connected with the energy storage mechanism, an electromagnet is started when the temperature exceeds a threshold value through a self-adaptive multistage heat dissipation adjusting mechanism according to temperature grading regulation, an iron block/plate is attracted to pull two sides of a rubber flow passage, the width of the iron block/plate is increased, the flow passage is narrowed, the wall is thinned, the width is increased, the contact area with the bottom of a battery is enlarged, the heat dissipation area is increased, the flow passage is narrowed, the flow rate of cooling liquid is accelerated, the heat exchange is enhanced, the flow passage is thinned to enable the cooling liquid to be closer to the battery, the utilization rate and the heat dissipation efficiency are improved, an electromagnetic iron plate is periodically controlled to be opened or closed by a turbulence generating mechanism, the magnetic plate is pushed away from or close, the bottom wall of the rubber flow passage is dithered, a thermal boundary layer is destroyed, the cooling liquid cannot contact with a top wall to influence the heat exchange, turbulence is avoided, and the heat exchange efficiency is remarkably improved by perturbing the mixed cooling liquid.

Inventors

  • Zhou Erhe
  • CHEN MIN
  • FANG WU
  • XU YINGHUA

Assignees

  • 合肥中科贝伦科技有限公司

Dates

Publication Date
20260508
Application Date
20251103

Claims (7)

  1. 1. The utility model provides a multistage liquid cooling heat abstractor of high density energy storage group battery, includes energy storage mechanism (1), its characterized in that still includes: The liquid cooling mechanism (2) is connected with the energy storage mechanism (1) and comprises a plurality of rows of cooling channels, the cooling channels comprise a plurality of rubber flow channels (22), metal flow channels (23) are communicated among the rubber flow channels (22), and when cooling liquid passes through the rubber flow channels (22), the cooling liquid exchanges heat with the bottom of the battery (13); The self-adaptive multi-stage heat dissipation adjusting mechanism (3) is connected with the energy storage mechanism (1) and comprises inclined iron blocks (31) and iron sheets (32) which are fixed on two sides of the rubber runner (22), two inclined iron blocks (31) and two iron sheets (32) are arranged on each side of the rubber runner (22), a triangular electromagnet (37) is arranged on one side of the inclined iron blocks (31), and an electromagnet block (38) is arranged on one side of the iron sheets (32); The turbulence generating mechanism (4) is connected with the self-adaptive multistage heat dissipation adjusting mechanism (3) and comprises a magnetic plate (43) fixed at the bottom of the rubber runner (22), and an electromagnetic iron plate (42) is arranged on one side of the magnetic plate (43); A leak detection mechanism (5) connected to the energy storage mechanism (1); An I-shaped mounting frame (25) is fixedly sleeved at the connection position of the rubber runner (22) and the metal runner (23), and the top of the I-shaped mounting frame (25) is fixedly connected with the bottom of the battery (13); The self-adaptive multistage heat dissipation adjusting mechanism (3) further comprises a reciprocating screw rod (33) rotatably connected inside the I-shaped mounting frame (25), and an adjusting head (34) is fixed at one end of the reciprocating screw rod (33); Two C-shaped frames (36) are arranged between the two reciprocating screw rods (33), two sides of each C-shaped frame (36) are fixedly provided with moving plates (35), and the two moving plates (35) are respectively sleeved outside the two reciprocating screw rods (33) in a threaded manner; both sides of the C-shaped frame (36) are fixedly connected with a triangular electromagnet (37), and the inner wall of the C-shaped frame (36) is fixedly connected with an electromagnet block (38); the inclined surface of the triangular electromagnet (37) is magnetically attracted with the inclined surface of the inclined iron block (31), and the electromagnet block (38) is magnetically attracted with the iron sheet (32).
  2. 2. The multi-stage liquid cooling heat dissipation device of a high-density energy storage battery pack according to claim 1, wherein the energy storage mechanism (1) comprises a bottom plate (11), and a plurality of rows of battery bins (12) are fixed at the top of the bottom plate (11); A plurality of batteries (13) are fixed in each row of battery bins (12), and the batteries (13) are in a group; The power supply end of the battery (13) is positioned at one side far away from the bottom plate (11); Cooling mounting ports (14) are formed in two sides of each row of battery bins (12); A plurality of temperature sensors are fixed at the bottom of the battery (13).
  3. 3. The multi-stage liquid cooling heat sink of a high-density energy storage battery pack according to claim 2, wherein the liquid cooling mechanism (2) further comprises a liquid supply channel (21) and a liquid outlet channel (24) which are respectively communicated with two rubber channels (22) positioned at the edge; the liquid supply channel (21) and the liquid outlet channel (24) are sleeved in the cooling mounting port (14); One end of the liquid supply channel (21) is connected with a liquid supply pump, the liquid supply pump is connected with a liquid storage tank, and the liquid outlet channel (24) is communicated with the liquid storage tank; the bottom of the I-shaped mounting frame (25) is fixedly connected with the bottom plate (11).
  4. 4. A multi-stage liquid cooling heat sink for a high density energy storage battery as defined in claim 3 wherein the adaptive multi-stage heat sink adjustment mechanism (3) further comprises a plurality of support plates (39) secured between the two i-shaped mounting brackets (25), the support plates (39) being located at the bottom of the rubber flow channels (22).
  5. 5. The multi-stage liquid cooled heat sink for a high density energy storage battery as defined in claim 4 wherein the turbulence generating mechanism (4) further comprises a mounting plate (41) rotatably coupled to the exterior of two adjacent reciprocating screws (33); the electromagnetic iron plate (42) is fixed in the mounting plate (41); the electromagnetic iron plate (42) and the magnetic plate (43) are magnetically attracted.
  6. 6. The multi-stage liquid cooling heat dissipation device of a high-density energy storage battery pack according to claim 5, wherein the leakage detection mechanism (5) comprises a plurality of rows of pipeline ports formed in a bottom plate (11), the rubber flow channels (22) correspond to the pipeline ports, detection pipes (51) are fixed in the pipeline ports, humidity sensors are fixed in the detection pipes (51), collecting pipes (52) are communicated with the bottoms of the pipeline ports of each row, and collecting boxes are externally received by the collecting pipes (52).
  7. 7. The multi-stage liquid cooling heat sink of a high density energy storage battery pack as claimed in claim 6, wherein a controller is fixed on one side of the battery compartment (12), and the controller is electrically connected with the temperature sensor, the humidity sensor, the triangle electromagnet (37), the electromagnet block (38) and the electromagnet plate (42), respectively.

Description

Multistage liquid cooling heat abstractor of high density energy storage group battery Technical Field The invention relates to the technical field of battery liquid cooling and heat dissipation, in particular to a multistage liquid cooling and heat dissipation device of a high-density energy storage battery pack. Background With the rapid development of new energy automobile industry, secondary batteries such as lithium ion batteries are used as core energy storage devices, and are widely applied to various electric automobiles and energy storage systems. In the process of charging and discharging the battery, a large amount of heat is generated due to the existence of electrochemical reaction, and the internal space of the battery module is tightly arranged, so that the heat is difficult to rapidly emit, the temperature of the battery pack is rapidly increased, the efficiency and the service life of the battery are affected, and the safety problem is possibly caused. Therefore, the new energy automobile is commonly provided with a heat dissipation system to manage heat load, and the existing heat dissipation system mainly adopts a liquid cooling mode, wherein the liquid cooling system circularly flows in a special channel through cooling liquid to realize heat exchange with the surface of the battery. The whole temperature of the battery pack can be effectively reduced, and the battery pack can be ensured to work in a proper range. However, the battery liquid cooling channel structure in the prior art is fixed, is usually installed at the bottom of the battery, and realizes heat exchange by flowing cooling liquid inside so as to reduce the temperature of the bottom of the battery, but the design cannot be adaptively adjusted according to the real-time thermal state of a single battery pack, and when the temperature rises, the system lacks the targeted heat dissipation capability, and local overheating is easily caused, so that the risk of thermal runaway of the battery is increased, and the reliability and the safety of the whole energy storage system are affected. Disclosure of Invention The invention provides a multistage liquid cooling heat dissipation device of a high-density energy storage battery pack, which aims to solve the defects in the prior art. In order to achieve the above purpose, the present invention adopts the following technical scheme: The multistage liquid cooling heat abstractor of high density energy storage group battery includes energy storage mechanism, still includes: The liquid cooling mechanism is connected with the energy storage mechanism and comprises a plurality of rows of cooling channels, the cooling channels comprise a plurality of rubber flow channels, and metal flow channels are communicated among the rubber flow channels; The self-adaptive multistage heat dissipation adjusting mechanism is connected with the energy storage mechanism and comprises two inclined plane iron blocks and two iron sheets which are respectively fixed on two sides of the rubber runner, wherein the two inclined plane iron blocks are symmetrically arranged, a triangular electromagnet is arranged on one side of each inclined plane iron block, and an electromagnet block is arranged on one side of each iron sheet; The turbulence generating mechanism is connected with the self-adaptive multistage heat dissipation adjusting mechanism and comprises a magnetic plate fixed at the bottom of the rubber runner, and an electromagnetic iron plate is arranged at one side of the magnetic plate; and the leakage detection mechanism is connected with the energy storage mechanism. Further, the energy storage mechanism comprises a bottom plate, and a plurality of rows of battery bins are fixed at the top of the bottom plate; a plurality of batteries are fixed in each row of battery bins, and the batteries are in a group; the power supply end of the battery is positioned at one side far away from the bottom plate; Cooling mounting ports are formed in two sides of each row of battery bins; a plurality of temperature sensors are fixed at the bottom of the battery. Further, the liquid cooling mechanism further comprises a liquid supply runner and a liquid outlet runner which are respectively communicated with the two rubber runners at the edge; The liquid supply flow channel and the liquid outlet flow channel are sleeved in the cooling mounting port; One end of the liquid supply channel is connected with a liquid supply pump, the liquid supply pump is connected with a liquid storage tank, and the liquid outlet channel is communicated with the liquid storage tank; The rubber runner is made of flexible TPU, fibers are arranged in the TPU, and the service life of the rubber runner can be prolonged due to the fact that the TPU is compounded with the fibers in the TPU; an I-shaped mounting frame is fixedly sleeved at the connection position of the rubber runner and the metal runner, and the top of the I-shaped mounting fram