Energy storage box liquid cooling system

Abstract

The present invention discloses an energy storage box liquid cooling system, which comprises: a liquid inlet, a liquid outlet, a liquid inlet channel, a liquid outlet channel, a liquid baffle, an upper flow channel, a lower flow channel, a liquid baffle column, a first branch flow channel, a second branch flow channel, a third branch flow channel, a fourth branch flow channel, a liquid inlet port, a liquid outlet port and a bending section; by setting the branch flow channels and correspondingly increasing the number of bending sections, the passage time of the cooling liquid in the corresponding branch flow channels is increased, so that the flow update of the cooling liquid in each branch flow channel is kept relatively synchronous, and it is avoided that the flow update of the cooling liquid in the branch flow channel close to the liquid inlet is too fast relative to the flow update of the cooling liquid in the branch flow channel far from the liquid inlet, resulting in uneven heat dissipation.

Description

Technical Field

[0001] The present invention specifically relates to the field of new energy liquid cooling, and more specifically to an energy storage box liquid cooling system. Background Art

[0002] With the promotion and development of new energy, the use of energy storage devices such as lithium batteries has also appeared in all aspects of life, and energy storage boxes that protect and cool batteries are becoming increasingly important. The energy storage box is mainly used to accommodate the energy storage device and ensure its good heat dissipation and sealing effect. Liquid cooling, as a heat dissipation method, is often used in the energy storage box to cool and dissipate heat;

[0003] With the rise of new energy vehicles, the demand for energy storage in energy storage boxes is getting higher and higher, and the energy density of batteries in energy storage boxes is also getting higher and higher. The heat generated by the batteries will cause the temperature of the battery system to be too high. Since the liquid in the cooling plate close to the liquid inlet is updated faster, the temperature in the corresponding area tends to drop faster. The liquid flow away from the liquid inlet is updated slower and its temperature drops slower. The temperature in the corresponding area also drops too slowly, further making the temperature distribution of the battery system uneven. These will affect the safety and consistency of the battery system, and ultimately affect the service life of the battery system. Summary of the invention

[0004] The purpose of the present invention is to provide a liquid cooling system for an energy storage box to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Energy storage box liquid cooling system, including:

[0007] A shell and a liquid cooling plate arranged in the shell;

[0008] The liquid cooling plate is provided with a liquid inlet channel with a liquid inlet, a liquid outlet channel with a liquid outlet, and a plurality of branch flow channels arranged in parallel in sequence, the liquid inlet openings of the branch flow channels are all connected to the liquid inlet channel, and the liquid outlet openings of the branch flow channels are all connected to the liquid outlet channel; the branch flow channels are composed of a plurality of groups of bending sections;

[0009] Along the axial direction of the liquid inlet channel, the number of bending sections of the diverter flow channel relatively close to the liquid inlet is not less than the number of bending sections of the diverter flow channel relatively far away from the liquid inlet; and the flow channel width of the diverter flow channel relatively close to the liquid inlet is not greater than the flow channel width of the diverter flow channel relatively far away from the liquid inlet.

[0010] Preferably, a liquid baffle is provided in the liquid inlet channel, and the liquid baffle divides the liquid inlet channel into an upper flow channel and a lower flow channel along the axial direction of the liquid inlet channel, and the upper flow channel is close to the liquid outlet openings of each of the branch flow channels.

[0011] Preferably, a plurality of the liquid baffles are arranged along the axial direction of the liquid inlet channel, and along the axial direction of the liquid inlet channel, the width of the upper flow channel relatively close to the liquid inlet is not greater than the width of the upper flow channel relatively far from the liquid inlet.

[0012] Preferably, a liquid blocking column is provided at the inlet of each of the diversion channels.

[0013] Preferably, along the axial direction of the liquid inlet channel, the number of liquid blocking columns relatively close to the liquid inlet is not less than the number of liquid blocking columns relatively far from the liquid inlet.

[0014] Preferably, the liquid inlet channel and the liquid outlet channel are arranged in parallel.

[0015] Preferably, the liquid inlet of the liquid inlet channel and the liquid outlet of the liquid outlet channel are located on the same side.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By setting up branch flow channels and increasing the number of bending sections accordingly, the passage time of the cooling liquid in the corresponding branch flow channels is increased, so that the flow update of the cooling liquid in each branch flow channel remains relatively synchronized, avoiding that the flow update of the cooling liquid in the branch flow channel close to the liquid inlet is too fast relative to the flow update of the cooling liquid in the branch flow channel far from the liquid inlet, resulting in uneven heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the present invention;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of point A;

[0021] In the figure: 1. liquid inlet; 2. liquid outlet; 3. liquid inlet channel; 4. liquid outlet channel; 5. liquid baffle plate; 6. upper flow channel; 7. lower flow channel; 8. liquid baffle column; 9. first branch flow channel; 10. second branch flow channel; 11. third branch flow channel; 12. fourth branch flow channel; 13. liquid inlet port; 14. liquid outlet port; 15. bending section. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 3 , the present invention provides a technical solution:

[0024] Energy storage box liquid cooling system, including:

[0025] A shell and a liquid cooling plate arranged in the shell;

[0026] The liquid cooling plate is provided with a liquid inlet channel 3 with a liquid inlet 1, a liquid outlet channel 4 with a liquid outlet 2, and a plurality of branch flow channels arranged in parallel in sequence, wherein the liquid inlet openings 13 of the branch flow channels are all connected to the liquid inlet channel 3, and the liquid outlet openings 14 of the branch flow channels are all connected to the liquid outlet channel 4; the branch flow channels are composed of a plurality of groups of bending sections 15;

[0027] Along the axial direction of the liquid inlet channel 3, the number of bending sections 15 of the diverter flow channel relatively close to the liquid inlet 1 is not less than the number of bending sections 15 of the diverter flow channel relatively far away from the liquid inlet 1; and the flow channel width of the diverter flow channel relatively close to the liquid inlet 1 is not greater than the flow channel width of the diverter flow channel relatively far away from the liquid inlet 1.

[0028] like Figure 1-Figure 3As shown, the diverter channel includes: a first diverter channel 9, a second diverter channel 10, a third diverter channel 11 and a fourth diverter channel 12. The first diverter channel 9, the second diverter channel 10, the third diverter channel 11 and the fourth diverter channel 12 are sequentially arranged in the liquid inlet channel 3, and the cooling liquid in the liquid inlet channel 3 is diverted through the four diverter channels. Since the number of bending sections 15 of the diverter channel relatively close to the liquid inlet 1 is not less than the number of bending sections 15 of the diverter channel relatively far from the liquid inlet 1, the bending sections 15 of the first diverter channel 9 are more than the bending sections 15 of the second diverter channel 10, the bending sections 15 of the second diverter channel 10 are more than the bending sections 15 of the third diverter channel 11, and the bending sections 15 of the third diverter channel 11 are larger than the bending sections 15 of the fourth diverter channel 12. Furthermore, the flow distance of the cooling liquid in the first branch channel 9 is greater than that in the second branch channel 10, greater than that in the third branch channel 11, and greater than that in the fourth branch channel 12. By increasing the number of bending sections 15, the passage time of the cooling liquid in the corresponding branch channels is also increased, that is, the bending section 15 of the first branch channel 9 near the liquid inlet 1 is greater than the second branch channel 10, greater than the third branch channel 11, and greater than the fourth branch channel 12, so that the flow update of the cooling liquid in each branch channel remains relatively synchronized, avoiding that the flow update of the cooling liquid in the branch channel near the liquid inlet 1 is too fast relative to the flow update of the cooling liquid in the branch channel far away from the liquid inlet 1, resulting in uneven heat dissipation.

[0029] The flow channel width of the branch flow channel close to the liquid inlet 1 is not greater than the flow channel width of the branch flow channel relatively far from the liquid inlet 1. This makes the flow renewal rate of the cooling liquid in each branch flow channel more uniform.

[0030] In this embodiment, a liquid baffle plate 5 is provided in the liquid inlet channel 3, and the liquid baffle plate 5 divides the liquid inlet channel 3 into an upper flow channel 6 and a lower flow channel 7 along the axial direction of the liquid inlet channel 3. The upper flow channel 6 is close to the liquid outlet openings 14 of each of the branch flow channels.

[0031] The liquid baffle plate 5 divides the liquid inlet channel 3 into an upper flow channel 6 and a lower flow channel 7. The coolant flowing into the liquid inlet channel 3 from the liquid inlet 1 is divided into two paths at the outer end of the liquid baffle plate 5, one part flows along the upper flow channel 6, and the other part flows along the lower flow channel 7. The two coolant flow paths merge into one path at the inner end of the liquid baffle plate 5 and continue to flow along the liquid inlet channel 3.

[0032] The setting of the liquid baffle 5 can prevent most of the coolant flowing in from the liquid inlet 1 from flowing into the first branch flow channel near the liquid inlet 1, and the coolant diverted to the upper flow channel 6 can flow into the first branch flow channel 9 near the liquid inlet 1; so as to relatively evenly distribute the coolant flowing into each branch flow channel, so that the flow rate of the coolant flowing into each parallel branch flow channel is relatively uniform, avoiding excessive coolant in some branch flow channels and too little coolant in some branch flow channels 1, thereby better heat dissipation of the area corresponding to each branch flow channel 13.

[0033] In this embodiment, a plurality of liquid baffles 5 are arranged along the axial direction of the liquid inlet channel 3, and along the axial direction of the liquid inlet channel 3, the width of the upper flow channel 6 relatively close to the liquid inlet port 1 is not greater than the width of the upper flow channel 6 relatively far away from the liquid inlet port 1; the arrangement of the liquid baffles 5 makes the flow rate of the coolant flowing into each branch flow channel relatively uniform.

[0034] In this embodiment, along the axial direction of the liquid inlet channel 3 , the number of the liquid blocking columns 8 relatively close to the liquid inlet 1 is not less than the number of the liquid blocking columns 8 relatively far from the liquid inlet 1 .

[0035] In this embodiment, the inlet of the diverter flow channel is provided with a liquid blocking column 8. The provision of the liquid blocking column 8 can increase the resistance of the coolant flowing into the diverter flow channel and slow down the flow rate of the coolant. The number of the liquid blocking columns 8 of the diverter flow channel close to the liquid inlet 1 is relatively large, which can reduce the flow rate of the coolant accordingly. The number of the liquid blocking columns 8 of the diverter flow channel 13 far from the liquid inlet 1 is relatively small, which can increase the flow rate of the coolant accordingly. In this way, the coolant flowing into each diverter flow channel can be more reasonably distributed.

[0036] In this embodiment, the liquid inlet channel 3 and the liquid outlet channel 4 are arranged in parallel.

[0037] In this embodiment, the liquid inlet 1 of the liquid inlet channel 3 and the liquid outlet 2 of the liquid outlet channel 4 are located on the same side.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Energy storage box liquid cooling system, characterized in that: include: A shell and a liquid cooling plate arranged in the shell; The liquid cooling plate is provided with a liquid inlet channel (3) with a liquid inlet (1), a liquid outlet channel (4) with a liquid outlet (2), and a plurality of branch flow channels arranged in sequence and in parallel, the liquid inlet openings (13) of the branch flow channels are all connected to the liquid inlet channel (3), and the liquid outlet openings (14) of the branch flow channels are all connected to the liquid outlet channel (4); the branch flow channels are composed of a plurality of groups of bending sections (15); Along the axial direction of the liquid inlet channel (3), the number of the bent sections (15) of the diverter flow channel relatively close to the liquid inlet (1) is not less than the number of the bent sections (15) of the diverter flow channel relatively far from the liquid inlet (1); and the flow channel width of the diverter flow channel relatively close to the liquid inlet (1) is not greater than the flow channel width of the diverter flow channel relatively far from the liquid inlet (1).

2. The energy storage box liquid cooling system according to claim 1, characterized in that: A liquid baffle (5) is provided in the liquid inlet channel (3), and the liquid baffle (5) divides the liquid inlet channel (3) into an upper flow channel (6) and a lower flow channel (7) along the axial direction of the liquid inlet channel (3), and the upper flow channel (6) is close to the liquid outlet opening (14) of each of the branch flow channels.

3. The energy storage box liquid cooling system according to claim 2, characterized in that: A plurality of the liquid baffles (5) are arranged along the axial direction of the liquid inlet channel (3); along the axial direction of the liquid inlet channel (3), the width of the upper flow channel (6) relatively close to the liquid inlet (1) is not greater than the width of the upper flow channel (6) relatively far from the liquid inlet (1).

4. The energy storage box liquid cooling system according to claim 3 is characterized in that: The inlet of the diversion flow channel is provided with a liquid blocking column (8).

5. The energy storage box liquid cooling system according to claim 4, characterized in that: Along the axial direction of the liquid inlet channel (3), the number of liquid blocking columns (8) relatively close to the liquid inlet (1) is not less than the number of liquid blocking columns (8) relatively far from the liquid inlet (1).

6. The energy storage box liquid cooling system according to claim 5, characterized in that: The liquid inlet channel (3) and the liquid outlet channel (4) are arranged in parallel.

7. The energy storage box liquid cooling system according to claim 6, characterized in that: The liquid inlet (1) of the liquid inlet channel (3) and the liquid outlet (2) of the liquid outlet channel (4) are located on the same side.

Images