Battery cell state active adjustment-based energy storage soaking system and adjustment method

Abstract

The invention discloses an energy storage soaking system based on active adjustment of battery cell states and an adjustment method, the energy storage soaking system comprises a battery cell array liquid cooling shell, the center of the battery cell array liquid cooling shell is provided with a central passage in an extending manner along the X direction, and two rows of battery cell arrays are symmetrically arranged on two sides of the central passage; each column of battery cell array is formed by equidistantly arraying a plurality of groups of parallel rectangular battery cells along the X direction, and a liquid cooling channel is formed between any two adjacent groups of rectangular battery cells; and an edge channel extending along the X direction is formed between one side, far away from the central passage, of each battery cell array as a whole and the circumferential inner wall of the battery cell array liquid cooling shell, so that the problem of cold region uniformity of a static structure in different states of the battery cells is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of energy storage battery heat dissipation system. BACKGROUND

[0002] In the field of thermal management of energy storage battery systems, fixed flow channel design has long dominated. Such traditional cooling systems, through pre-set geometric structures and fluid channel layouts, can maintain a relatively ideal temperature balance within a certain rated power range. However, it is worth noting that when the battery system operates under dynamic conditions, especially in the face of three typical working modes of low power (<0.5C), medium power (0.5-1C) and high power (>1C), the heat absorption uniformity of the cooling medium will fluctuate significantly, which has become an important bottleneck restricting the performance optimization of the battery system. SUMMARY

[0003] The purpose of the application is to overcome the deficiencies in the prior art, and to provide an energy storage heat equalization system based on active adjustment of battery state and a regulation method, to alleviate the cold zone uniformity problem of static structure under different states of the battery.

[0004] Technical scheme: To achieve the above-mentioned purpose, the energy storage heat equalization system based on active adjustment of battery state of the application comprises a battery array liquid cooling shell, a central passage is provided in the center of the battery array liquid cooling shell along the X direction, and two rows of battery array are symmetrically arranged on both sides of the central passage; each row of battery array is composed of a plurality of groups of rectangular batteries parallel to each other and arranged equidistantly along the X direction, and a liquid cooling channel is formed between any two adjacent groups of rectangular batteries;

[0005] Each battery array as a whole is away from one side of the central passage and forms an edge channel extending along the X direction between the battery array liquid cooling shell and the circumferential inner wall;

[0006] The two ends of each liquid cooling channel along the Y direction are respectively connected to the edge channel and the central passage perpendicularly;

[0007] The central passage has a hot oil discharge port, an a cold oil inlet port and a b cold oil inlet port, the hot oil discharge port is in the center of the central passage, and the a cold oil inlet port and the b cold oil inlet port are symmetrically arranged on both sides of the hot oil discharge port.

[0008] Further, the first pulley and the second pulley are rotatably arranged at the two ends of the central passage; a liquid constraint conveyor belt extending along the X direction is arranged in the central passage, the two ends of the liquid constraint conveyor belt are respectively transmitted across the first pulley and the second pulley; in the top view, the hot oil discharge port, the a cold oil inlet port and the b cold oil inlet port are all within the enclosed range of the liquid constraint conveyor belt; a strip-shaped opening is hollowed out on the path along the length direction of the liquid constraint conveyor belt at the middle height of the liquid constraint conveyor belt, and the central passage communicates the space within the enclosed range of the liquid constraint conveyor belt through the strip-shaped opening.

[0009] Further, at least one of the first pulley and the second pulley is a driving pulley driven by the adjusting motor.

[0010] Further, the liquid-restricted conveyor belt comprises a liquid-restricted conveyor belt a section and a liquid-restricted conveyor belt b section parallel along the X direction; the central passage is provided with a first follower assembly and a second follower assembly; the first follower assembly is between the hot oil discharge outlet and the a cold oil inlet; the second follower assembly is between the hot oil discharge outlet and the b cold oil inlet; the first follower assembly and the second follower assembly respectively follow the synchronous displacement of the liquid-restricted conveyor belt a section and the liquid-restricted conveyor belt b section.

[0011] Further, the first follower assembly and the second follower assembly each comprise an a isolation block, a b isolation block and a shuttle block; the a isolation block and the b isolation block form a belt body shuttle gap therebetween; the a isolation block and the b isolation block are integrally connected by the shuttle block at the middle part therebetween.

[0012] Further, the shuttle block of the first follower assembly moves through the belt-shaped port on the liquid-restricted conveyor belt a section; the liquid-restricted conveyor belt b section shuttles through the belt body shuttle gap on the first follower assembly along the X direction; the a isolation block of the first follower assembly is integrally fixed on the liquid-restricted conveyor belt a section; the shuttle block of the second follower assembly moves through the belt-shaped port on the liquid-restricted conveyor belt b section; the liquid-restricted conveyor belt a section shuttles through the belt body shuttle gap on the second follower assembly along the X direction; the a isolation block of the second follower assembly is integrally fixed on the liquid-restricted conveyor belt a section; the first follower assembly and the second follower assembly each cut off the central passage at the respective positions thereof; and the a isolation block of the first follower assembly and the a isolation block of the second follower assembly divide the enclosing range of the liquid-restricted conveyor belt into a first enclosing area, a second enclosing area and a third enclosing area; the hot oil discharge outlet, the a cold oil inlet and the b cold oil inlet are respectively in the first enclosing area, the second enclosing area and the third enclosing area.

[0013] Further, the space in the liquid-cooled shell of the battery cell array is divided into a first interval, a second interval and a third interval along the X direction; the first follower assembly is at the boundary between the first interval and the second interval; the second follower assembly is at the boundary between the second interval and the third interval; the liquid cooling channels in the first interval, the second interval and the third interval are respectively left-first liquid cooling channels, central-later liquid cooling channels and right-first liquid cooling channels.

[0014] Further, when the heating power of the battery cell array is in a low power gear: by controlling the first pulley or the second pulley to rotate counterclockwise, the liquid-restricted conveyor belt a section and the liquid-restricted conveyor belt b section drive the first follower assembly and the second follower assembly to move away from each other; until, in a top-down view, the first follower assembly and the second follower assembly just touch the edges of the a cold oil inlet and the b cold oil inlet respectively;

[0015] When the heat generation power of the battery cell array is in the high power gear: by controlling the first pulley or the second pulley to rotate clockwise, the liquid-restricted conveyor belt a section and the liquid-restricted conveyor belt b section drive the first follower assembly and the second follower assembly to approach each other respectively until, in the overhead perspective, the first follower assembly and the second follower assembly are just about to contact the edges of the hot oil discharge outlet at both ends

[0016] When the heat generation power of the battery cell array is in the medium power gear: by controlling the first pulley or the second pulley to rotate, the liquid-restricted conveyor belt a section and the liquid-restricted conveyor belt b section drive the first follower assembly and the second follower assembly to move at the same speed in opposite directions until, in the overhead perspective, the first follower assembly is centered between the a cold oil inlet and the hot oil discharge outlet, and the second follower assembly is centered between the hot oil discharge outlet and the b cold oil inlet.

[0017] Beneficial effects: the application can effectively alleviate the cold area uniformity problem of the static structure under different states of the battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the arrangement of two rows of battery cell arrays (the shell and other structures are hidden);

[0019] Figure 2 It is a schematic diagram of the overall layout of the liquid-cooled battery box of the present scheme;

[0020] Figure 3 It is a schematic diagram of the combined state of the liquid-restricted conveyor belt, the first pulley, the second pulley, the first follower assembly and the second follower assembly;

[0021] Figure 4 It is an enlarged schematic diagram of mark 8 of Figure 3

[0022] Figure 5 It is a schematic diagram of the first follower assembly and the second follower assembly;

[0023] Figure 6 It is the final velocity cloud diagram obtained by ANSYS Fluent under the "first condition";

[0024] Figure 7 It is the final flow field visualization diagram obtained by ANSYS Fluent under the "first condition";

[0025] Figure 8 It is the final velocity cloud diagram obtained by ANSYS Fluent under the "second condition";

[0026] Figure 9 ​The final flow field visualization diagram obtained by ANSYS Fluent in the "second case";

[0027] Figure 10 The color chart is Figures 6 to 9 . DETAILED DESCRIPTION

[0028] The application will be further described below with reference to the accompanying drawings.

[0029] As shown in the accompanying Figures 1 to 10 , the energy storage uniform heating system based on active adjustment of the state of the battery cell.

[0030] The overall structure is combined Figure 1 and Figure 2 , including a battery cell array liquid cooling shell 5, a central passage 6 is provided in the center of the battery cell array liquid cooling shell 5 along the X direction, and two rows of battery cell arrays 1 are symmetrically provided on both sides of the central passage 6; each row of battery cell arrays 1 is formed by a plurality of groups of rectangular battery cells 3 parallel to each other and arranged equidistantly along the X direction, and a liquid cooling channel 9 is formed between any two adjacent groups of rectangular battery cells 3; each battery cell array 1 as a whole is away from one side of the central passage 6 and forms an edge channel 50 along the X direction between the battery cell array liquid cooling shell 5 and the circumferential inner wall; the central passage 6 has a hot oil discharge outlet 15, an a cold oil inlet 14 and a b cold oil inlet 16, the hot oil discharge outlet 15 is in the center of the central passage 6, and the a cold oil inlet 14 and the b cold oil inlet 16 are symmetrically provided on both sides of the hot oil discharge outlet 15.

[0031] As Figure 3 , 4 , 5 shows that the first pulley 11 and the second pulley 12 are rotatably provided at both ends in the central passage 6, and at least one of the first pulley 11 and the second pulley 12 is a driving pulley driven by an adjusting motor; a liquid-constrained conveyor belt 17 extending along the X direction is arranged in the central passage 6, the liquid-constrained conveyor belt 17 is heat-conducting rubber, and the heat-conducting rubber is composed of a rubber matrix, a heat-conducting filler and an additive. The rubber matrix imparts flexibility and elasticity to the material, such as silicone rubber and nitrile rubber; the heat-conducting filler is aluminum oxide, aluminum nitride and boron nitride, etc., which has high thermal conductivity and can significantly improve the thermal conductivity of the rubber, and its principle is that the heat-conducting principle of the heat-conducting rubber mainly depends on the heat-conducting network formed by the heat-conducting filler in the rubber matrix. When heat is transferred, heat is transferred from a high-temperature area to a low-temperature area through the contact between the heat-conducting fillers and the conduction of phonons (lattice vibrations), thereby achieving the purpose of heat dissipation; the upper and lower ends of the liquid-constrained conveyor belt 17 are in sliding or less than 0.5mm gap cooperation with the upper and lower inner walls of the battery cell array liquid cooling shell 5.

[0032] As Figure 2, liquid constraint conveyor belt 17 two ends of the transmission across the first pulley 11 and the second pulley 12 respectively; the hot oil outlet 15, a cold oil inlet 14 and b cold oil inlet 16 are in the liquid constraint conveyor belt 17 enclosed range under the perspective view; the liquid constraint conveyor belt 17 is hollowed out with a circle of belt-shaped mouth 18 on the path along the length direction of itself at the middle height, and the central passage 6 communicates the space in the liquid constraint conveyor belt 17 enclosed range through the circle of belt-shaped mouth 18; the liquid constraint conveyor belt 17 includes liquid constraint conveyor belt a section 17a and liquid constraint conveyor belt b section 17b parallel along the X direction; the first follow-up assembly 7 and the second follow-up assembly 8 are arranged in the central passage 6, and the upper and lower ends of the first follow-up assembly 7 and the second follow-up assembly 8 are in sliding or less than 0.5mm gap fit with the upper and lower inner walls of the battery cell array liquid cooling shell 5, and the gap has little or no effect on the flow of heat transfer oil; the first follow-up assembly 7 is between the hot oil outlet 15 and the a cold oil inlet 14, and the second follow-up assembly 8 is between the hot oil outlet 15 and the b cold oil inlet 16; the first follow-up assembly 7 and the second follow-up assembly 8 respectively follow the liquid constraint conveyor belt a section 17a and the liquid constraint conveyor belt b section 17b to displace synchronously.

[0033] As shown in Figure 3 , 4 , 5, the first follow-up assembly 7 and the second follow-up assembly 8 each include a isolation block 21, b isolation block 20 and shuttle block 22, and the a isolation block 21 and the b isolation block 20 form a belt body shuttle gap 23, and the middle height between the a isolation block 21 and the b isolation block 20 is integrally connected through the shuttle block 22.

[0034] The shuttle block 22 of the first follow-up assembly 7 moves through the belt-shaped mouth 18 on the liquid constraint conveyor belt a section 17a, and the liquid constraint conveyor belt b section 17b shuttles through the belt body shuttle gap 23 on the first follow-up assembly 7 along the X direction; the a isolation block 21 of the first follow-up assembly 7 is integrally fixed on the liquid constraint conveyor belt a section 17a.

[0035] The shuttle block 22 of the second follow-up assembly 8 moves through the belt-shaped mouth 18 on the liquid constraint conveyor belt b section 17b, and the liquid constraint conveyor belt a section 17a shuttles through the belt body shuttle gap 23 on the second follow-up assembly 8 along the X direction; the a isolation block 21 of the second follow-up assembly 8 is integrally fixed on the liquid constraint conveyor belt a section 17a.

[0036] The first follow-up assembly 7 and the second follow-up assembly 8 each cut off the central passage 6 at the respective positions; and the a isolation block 21 of the first follow-up assembly 7 and the a isolation block 21 of the second follow-up assembly 8 divide the enclosed range of the liquid constraint conveyor belt 17 into a first enclosed area 10a, a second enclosed area 10b and a third enclosed area 10c; the hot oil outlet 15, the a cold oil inlet 14 and the b cold oil inlet 16 are respectively in the first enclosed area 10a, the second enclosed area 10b and the third enclosed area 10c.

[0037] The space in the liquid-cooled shell 5 of the battery cell array is divided into a first section 4A, a second section 4B and a third section 4C along the X direction; the first follower assembly 7 is at the boundary between the first section 4A and the second section 4B, and the second follower assembly 8 is at the boundary between the second section 4B and the third section 4C; the liquid cooling channels 9 in the first section 4A, the second section 4B and the third section 4C are respectively denoted as left-first liquid cooling channels 9a, central-back liquid cooling channels 9b and right-first liquid cooling channels 9c.

[0038] Working principle:

[0039] The heat transfer process of the liquid flow of the liquid cooling is shown in Figure 7 and 9

[0040] The cold cooling oil is continuously introduced into the first enclosed area 10a and the third enclosed area 10c through the cold oil introduction ports 14 and 16, respectively, while the hot oil is continuously discharged from the second enclosed area 10b through the hot oil discharge port 15;

[0041] The cooling oil in the first enclosed area 10a enters the central passage 6 of the first section 4A through the edge strip port 18 under the action of positive pressure, and the cooling oil entering the central passage 6 of the first section 4A is divided into several left-first liquid cooling channels 9a under the action of positive pressure, and then flows to the edge passage 50 of the first section 4A along the Y direction after flowing through the left-first liquid cooling channels 9a;

[0042] At the same time, the cooling oil in the second enclosed area 10b enters the central passage 6 of the third section 4C through the edge strip port 18 under the action of positive pressure, and the cooling oil entering the central passage 6 of the third section 4C is divided into several right-first liquid cooling channels 9c under the action of positive pressure, and then flows to the edge passage 50 of the third section 4C along the Y direction after flowing through the right-first liquid cooling channels 9a;

[0043] Subsequently, the cooling oil in the edge passage 50 of the first section 4A and the third section 4C converges into the edge passage 50 of the second section 4B under the action of oil pressure;

[0044] Subsequently, the cooling oil in the edge passage 50 of the second section 4B is divided into each central-back liquid cooling channel 9b, and then flows to the central passage 6 of the second section 4B along the Y direction after flowing through the central-back liquid cooling channel 9b, and then the cooling oil entering the central passage 6 of the second section 4B enters the second enclosed area 10b through the strip port 18 of the second section 4B, thereby completing a complete flow cycle;

[0045] ​In the above process, the cooling oil first passes through the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c to pre-absorb part of the heat and warm up, and then converges into the central post-liquid cooling channel 9b. The cooling oil that has been warmed up for the first time enters the central post-liquid cooling channel 9b and continues to absorb the heat of the rectangular battery cell 3 nearby, so that the temperature of the cooling oil in the central post-liquid cooling channel 9b is significantly higher than that of the cooling oil in the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c. This causes the heat absorption efficiency of the cooling oil in the central post-liquid cooling channel 9b to be low.

[0046] In the present solution, although the temperature of the central post-liquid cooling channel 9b is high, the cooling oil in the central post-liquid cooling channel 9b is converged from the cooling oil in the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c. Therefore, the flow rate of the liquid in the central post-liquid cooling channel 9b is significantly higher than that of the cooling oil in the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c. The faster the flow rate, the greater the turbulent effect, the higher the heat exchange efficiency, and the higher the heat dissipation efficiency. Therefore, the high temperature of the cooling oil in the central post-liquid cooling channel 9b is compensated, and the inconsistency of the cooling efficiency of the central post-liquid cooling channel 9b and the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c is eliminated to some extent.

[0047] However, the heat generation power of the battery cell array 1 in the battery cell array liquid cooling shell 5 has at least two power levels, high power and low power, under different working conditions.

[0048] If the present solution is a static structure:

[0049] When the heat generation power of the battery cell array 1 is in the low power level:

[0050] The cooling oil first passes through the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c to absorb a small amount of heat, and then converges into the central post-liquid cooling channel 9b. The temperature of the cooling oil in the central post-liquid cooling channel 9b is not significantly higher than that of the cooling oil in the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c. At this time, the difference in heat absorption efficiency of the cooling oil caused by the temperature difference between the central post-liquid cooling channel 9b and the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c is not large. However, if the flow rate of the liquid in the central post-liquid cooling channel 9b is still significantly higher than that of the cooling oil in the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c under this condition, the central post-liquid cooling channel 9b will have a greater heat absorption efficiency than the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c due to the high flow rate. This causes the cooling efficiency of the central post-liquid cooling channel 9b and the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c to be inconsistent.

[0051] When the heat generation power of the battery cell array 1 is in the high power level:

[0052] The cooling oil absorbs a large amount of heat in the process of passing through the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c, and then the temperature of the cooling oil in the central post-liquid cooling channel 9b is significantly higher than that of the cooling oil in the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c; at this time, the central post-liquid cooling channel 9b and the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c have too large a temperature difference to cause the cooling oil to absorb heat at different efficiencies; however, if the flow rate of the liquid in the central post-liquid cooling channel 9b is not higher than that of the cooling oil in the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c in this state, the central post-liquid cooling channel 9b will have a smaller heat absorption efficiency than the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c due to the high temperature difference; and then the cooling efficiency of the central post-liquid cooling channel 9b and the left pre-liquid cooling channel 9a and the right pre-liquid cooling channel 9c is inconsistent.

[0053] And the present scheme designs a unique uniform heating adjustment method by the dynamic structure of the liquid constraint conveyor belt 17, combined with the fluid mechanics finite element analysis software ANSYS Fluent:

[0054] The first case adjustment method:

[0055] When the heat power of the battery cell array 1 is in the low power gear:

[0056] By controlling the first pulley 11 or the second pulley 12 to rotate counterclockwise, the liquid constraint conveyor belt a section 17a and the liquid constraint conveyor belt b section 17b drive the first follower assembly 7 and the second follower assembly 8 to move away from each other, respectively; until the first follower assembly 7 and the second follower assembly 8 respectively just touch the edge of the a cold oil inlet 14 and the b cold oil inlet 16 in the overhead view;

[0057] The structure of the present scheme in this state is modeled in 3D, and then the 3D model is imported into the finite element analysis software ANSYS Fluent, and the geometric structure is simplified, the fluid domain is divided, and the fluid medium (silicone oil (PDMS)) is defined; use ANSYS Meshing or Fluent built-in mesh tool; the core boundary condition of the present scheme: the liquid outlet of the a cold oil inlet 14 and the b cold oil inlet 16 is defined as 0.38 m / s; the pressure outlet of the hot oil outlet 15 is defined as normal pressure; wall: no slip / slip; after solving and calculating the numerical simulation, the result is analyzed and visualized, and finally the velocity cloud chart and the flow field visualization chart are obtained, as Figure 6 and 7As shown in the velocity nephogram and flow field visualization diagram finally obtained from ANSYS Fluent, the liquid flow rate in the central rear liquid cooling channel 9b is substantially higher than the cooling oil flow rate in the left leading liquid cooling channel 9a and the right leading liquid cooling channel 9c in this state, thereby avoiding the problem that the cooling oil heat absorption efficiency in the central rear liquid cooling channel 9b is significantly reduced due to the significantly higher temperature of the cooling oil than that in the left leading liquid cooling channel 9a and the right leading liquid cooling channel 9c, so as to compensate for the high temperature of the cooling oil in the central rear liquid cooling channel 9b, thereby to a certain extent, eliminating the problem that the cooling efficiencies of the central rear liquid cooling channel 9b, the left leading liquid cooling channel 9a and the right leading liquid cooling channel 9c are inconsistent.

[0058] The adjustment method of the second case is as follows:

[0059] When the heat generation power of the battery cell array 1 is in the high power gear:

[0060] By controlling the first pulley 11 or the second pulley 12 to rotate clockwise, the liquid-restricted conveyor belt a section 17a and the liquid-restricted conveyor belt b section 17b drive the first follower assembly 7 and the second follower assembly 8 to approach each other, respectively, until the first follower assembly 7 and the second follower assembly 8 are just about to contact the edges of the hot oil discharge port 15 at both ends in the top view; the structure in this state is modeled in 3D, and then the 3D model is imported into the finite element analysis software ANSYS Fluent, and the geometric structure is simplified, the fluid domain is divided, and the fluid medium PDMS is defined; ANSYS Meshing or Fluent built-in meshing tool is used; the core boundary condition of the present scheme: the liquid discharge velocity of the a cold oil inlet port 14 and the b cold oil inlet port 16 is defined as 0.38 m / s; the pressure outlet of the hot oil discharge port 15 is defined as normal pressure; wall: no slip / slip; after solving and calculating the numerical simulation, the results are analyzed and visualized, and the velocity nephogram and flow field visualization diagram finally obtained are as shown in Figure 8 and 9 As shown in the velocity nephogram and flow field visualization diagram finally obtained from ANSYS Fluent, the liquid flow rate in the central rear liquid cooling channel 9b is substantially higher than the cooling oil flow rate in the left leading liquid cooling channel 9a and the right leading liquid cooling channel 9c in this state, thereby avoiding the problem that the cooling oil heat absorption efficiency in the central rear liquid cooling channel 9b is significantly reduced due to the significantly higher temperature of the cooling oil than that in the left leading liquid cooling channel 9a and the right leading liquid cooling channel 9c, so as to compensate for the high temperature of the cooling oil in the central rear liquid cooling channel 9b, thereby to a certain extent, eliminating the problem that the cooling efficiencies of the central rear liquid cooling channel 9b, the left leading liquid cooling channel 9a and the right leading liquid cooling channel 9c are inconsistent.

[0061] Based on the above rules and principles, the following strategy in the third case is derived:

[0062] The third case adjustment method:

[0063] When the heat generating power of the battery cell array 1 is in the middle power level:

[0064] By controlling the rotation of the first pulley 11 or the second pulley 12, the liquid-restricted conveyor belt a section 17a and the liquid-restricted conveyor belt b section 17b drive the first follower assembly 7 and the second follower assembly 8 to move at the same speed in opposite directions, respectively, until the first follower assembly 7 is centered between the a cold oil inlet 14 and the hot oil outlet 15, and the second follower assembly 8 is centered between the hot oil outlet 15 and the b cold oil inlet 16 in the overhead view.

[0065] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. An energy storage heat dissipation system based on active cell state adjustment, characterized in that: The device includes a liquid-cooled housing (5) for a battery cell array. A central passage (6) is provided in the center of the liquid-cooled housing (5) along the X direction. Two rows of battery cell arrays (1) are symmetrically arranged on both sides of the central passage (6). Each row of battery cell arrays (1) is composed of several sets of parallel rectangular battery cells (3) arranged at equal intervals along the X direction. A liquid-cooled channel (9) is formed between any two adjacent sets of rectangular battery cells (3). Each of the battery cell arrays (1) as a whole forms an edge channel (50) extending in the X direction between the side away from the central passage (6) and the circumferential inner wall of the battery cell array liquid cooling shell (5). Each liquid cooling channel (9) is perpendicularly connected to the edge channel (50) and the central passage (6) at both ends along the Y direction. The central passage (6) contains a hot oil outlet (15), a cold oil inlet (14) and a cold oil inlet (16). The hot oil outlet (15) is located in the center of the central passage (6), and the a cold oil inlet (14) and the b cold oil inlet (16) are symmetrical to the two sides of the hot oil outlet (15).

2. The energy storage heat dissipation system based on active cell state adjustment according to claim 1, characterized in that: The central passageway (6) is rotatably equipped with a first pulley (11) and a second pulley (12) at both ends; a liquid-constrained conveyor belt (17) extending along the X direction is provided in the central passageway (6), and the two ends of the liquid-constrained conveyor belt (17) drive across the first pulley (11) and the second pulley (12) respectively; from a top view, the hot oil outlet (15), a cold oil inlet (14) and b cold oil inlet (16) are all within the enclosed area of ​​the liquid-constrained conveyor belt (17); a ring of strip-shaped openings (18) is hollowed out along its own length at the middle height of the liquid-constrained conveyor belt (17), and the central passageway (6) connects the space within the enclosed area of ​​the liquid-constrained conveyor belt (17) through the ring of strip-shaped openings (18).

3. The energy storage heat dissipation system based on active cell state adjustment according to claim 2, characterized in that: At least one of the first pulley (11) and the second pulley (12) is a drive pulley that can be driven by an adjustable motor.

4. The energy storage heat dissipation system based on active cell state adjustment according to claim 3, characterized in that: The liquid-constrained conveyor belt (17) includes a liquid-constrained conveyor belt section a (17a) and a liquid-constrained conveyor belt section b (17b) parallel to each other in the X direction; a first follower component (7) and a second follower component (8) are provided in the central passage (6); the first follower component (7) is located between the hot oil outlet (15) and the cold oil inlet (14), and the second follower component (8) is located between the hot oil outlet (15) and the cold oil inlet (16); the first follower component (7) and the second follower component (8) move synchronously with the liquid-constrained conveyor belt section a (17a) and the liquid-constrained conveyor belt section b (17b), respectively.

5. The energy storage heat dissipation system based on active cell state adjustment according to claim 4, characterized in that: The first follower component (7) and the second follower component (8) both include an a-isolation block (21), a b-isolation block (20) and a shuttle block (22). A belt shuttle gap (23) is formed between the a-isolation block (21) and the b-isolation block (20). The middle height between the a-isolation block (21) and the b-isolation block (20) is integrally connected by the shuttle block (22).

6. The energy storage heat dissipation system based on active cell state adjustment according to claim 5, characterized in that: The shuttle block (22) of the first follower component (7) moves through the strip opening (18) on the liquid constraint conveyor belt a section (17a), and the liquid constraint conveyor belt b section (17b) moves through the belt body shuttle gap (23) on the first follower component (7) in the X direction; the a isolation block (21) of the first follower component (7) is integrally fixed on the liquid constraint conveyor belt a section (17a); the shuttle block (22) of the second follower component (8) moves through the strip opening (18) on the liquid constraint conveyor belt b section (17b), and the liquid constraint conveyor belt a section (17a) moves through the belt body shuttle gap (23) on the second follower component (8) in the X direction; the a isolation block (21) of the second follower component (8) is integrally fixed on the liquid constraint conveyor belt a section (17a); The first follower component (7) and the second follower component (8) both cut off the central passage (6) at their respective locations; and the a isolation block (21) of the first follower component (7) and the a isolation block (21) of the second follower component (8) divide the enclosure of the liquid-constrained conveyor belt (17) into a first enclosure area (10a), a second enclosure area (10b) and a third enclosure area (10c); the hot oil outlet (15), the a cold oil inlet (14) and the b cold oil inlet (16) are respectively located in the first enclosure area (10a), the second enclosure area (10b) and the third enclosure area (10c).

7. The energy storage heat dissipation system based on active cell state adjustment according to claim 6, characterized in that: The space inside the liquid-cooled housing (5) of the cell array is divided into a first section (4A), a second section (4B) and a third section (4C) along the X direction; the first follower component (7) is located at the boundary line between the first section (4A) and the second section (4B), and the second follower component (8) is located at the boundary line between the second section (4B) and the third section (4C); the liquid-cooled channels (9) within the range of the first section (4A), the second section (4B) and the third section (4C) are the left leading liquid-cooled channel (9a), the central rearward liquid-cooled channel (9b) and the right leading liquid-cooled channel (9c), respectively.

8. The adjustment method for an energy storage heat dissipation system based on active cell state adjustment according to claim 7, characterized in that: When the heating power of the cell array (1) is at a low power level: by controlling the first pulley (11) or the second pulley (12) to rotate counterclockwise, the liquid constraint conveyor belt a section (17a) and the liquid constraint conveyor belt b section (17b) respectively drive the first follower component (7) and the second follower component (8) to move away from each other; until, from a top view, the first follower component (7) and the second follower component (8) are just about to contact the edges of the a cold oil inlet (14) and the b cold oil inlet (16) respectively; When the heating power of the cell array (1) is at the high power level: by controlling the first pulley (11) or the second pulley (12) to rotate clockwise, the liquid constraint conveyor belt a section (17a) and the liquid constraint conveyor belt b section (17b) respectively drive the first follower component (7) and the second follower component (8) to move closer to each other, until, from a top-view perspective, the first follower component (7) and the second follower component (8) are just about to contact the edges of both ends of the hot oil outlet (15). When the heating power of the cell array (1) is at the medium power level: by controlling the rotation of the first pulley (11) or the second pulley (12), the liquid constraint conveyor belt a section (17a) and the liquid constraint conveyor belt b section (17b) respectively drive the first follower component (7) and the second follower component (8) to move at the same speed but in opposite directions, until the first follower component (7) is centered between the a cold oil inlet (14) and the hot oil outlet (15) in the top view, and the second follower component (8) is centered between the hot oil outlet (15) and the b cold oil inlet (16).

Images