Cooling system and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a cooling system and electric equipment. A plurality of cooling assemblies; each cooling assembly comprises a heat exchange part, a first liquid conveying part and a second liquid conveying part, a cooling channel allowing cooling liquid to circulate is formed in each heat exchange part, the first liquid conveying parts and the second liquid conveying parts communicate with the cooling channels correspondingly, and the first liquid conveying parts of the multiple cooling assemblies communicate in sequence; the cold source assembly comprises a cooling liquid source containing cooling liquid and a conveying piece used for conveying the cooling liquid, the cooling liquid source is connected with the conveying piece, one of the cooling liquid source and the conveying piece is connected with the first liquid conveying pipe, and the other one of the cooling liquid source and the conveying piece is connected with the second liquid conveying pipe. The original position with poor heat exchange effect and higher temperature becomes a part with better heat exchange, and the original part with better heat exchange effect becomes a part with poorer heat exchange effect, so that the temperature balance of each battery cell in the battery pack is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to cooling systems and electrical equipment. Background Technology

[0002] The cooling system is a crucial part of a power battery, ensuring its performance and safety. Since electric batteries generate a significant amount of heat during charging and discharging, excessively high temperatures can reduce battery efficiency, shorten its lifespan, and even lead to safety issues. Therefore, to effectively control the temperature of the battery cells, liquid cooling plates are typically installed inside the battery pack, using circulating coolant to cool the cells.

[0003] Currently, to improve the cooling effect of the cooling system, existing battery packs typically employ an arrangement where liquid cooling plates are placed between two adjacent rows of cells. Multiple vertically positioned liquid cooling plates are used to increase the contact area between the cells and the plates. These plates are interconnected, and the coolant enters from the main first inlet pipe, sequentially flows into the first connection port of the liquid cooling plates, and exits from the furthest main second inlet pipe. In this arrangement, the coolant temperature is lowest in the liquid cooling plates closest to the main first inlet pipe, allowing for more efficient heat exchange. Conversely, the coolant temperature is highest in the liquid cooling plates closest to the main second inlet pipe, resulting in lower heat exchange efficiency. This leads to uneven temperature distribution among the cells in the battery pack, which can reduce the lifespan of the cells. Utility Model Content

[0004] In view of this, the present invention provides a cooling system and electrical equipment to solve the problem of poor uniformity of cooling effect of existing spaced liquid cooling plates.

[0005] In a first aspect, this utility model provides a cooling system for cooling battery cells. The cooling system has intersecting first and second directions and includes: a fluid delivery assembly, including a first fluid delivery pipe and a second fluid delivery pipe; and multiple cooling assemblies spaced apart along the first direction. Each cooling assembly includes a heat exchange section, a first fluid delivery section, and a second fluid delivery section. The heat exchange section extends along the second direction and has a cooling channel for coolant flow. The first and second fluid delivery sections are both located at the same end of the heat exchange section along the second direction and are respectively connected to the cooling channel. The first fluid delivery sections of the multiple cooling assemblies are sequentially arranged... The cooling system comprises a plurality of cooling components, wherein the second liquid delivery sections are sequentially connected, at least one first liquid delivery section is connected to a first liquid delivery pipe, and at least one second liquid delivery section is connected to a second liquid delivery pipe; the cooling source assembly includes a coolant source containing coolant and a delivery component for delivering coolant, one end of the coolant source being connected to the first liquid delivery pipe via the delivery component, and the other end being connected to the second liquid delivery pipe; the delivery component has a first delivery state and a second delivery state, wherein, in the first delivery state, coolant flows from the first liquid delivery pipe into the second liquid delivery pipe; and in the second delivery state, coolant flows from the second liquid delivery pipe into the first liquid delivery pipe.

[0006] Beneficial effects: The coolant source is connected to the coolant delivery assembly via a delivery component. The delivery component can periodically change the coolant delivery direction. After delivering in the current direction for a certain period of time, the delivery direction is changed, so that the initial first delivery pipe becomes the second delivery pipe, and the initial second delivery pipe becomes the first delivery pipe. This allows the coolant in the cooling system to circulate, making areas with poor heat exchange and high temperature become areas with good heat exchange, while areas with good heat exchange become areas with poor heat exchange. This makes the heat dissipation capacity more uniform throughout the cooling system, improves the temperature balance of the cells in the battery pack, and effectively solves the problem of poor cooling uniformity of existing spaced liquid cooling plates.

[0007] In one optional embodiment, the cooling component located on one side along the first direction among the plurality of cooling components is the first cooling component, and the first infusion section of the first cooling component is connected to the first infusion tube. The cooling component located on the other side along the first direction among the plurality of cooling components is the second cooling component, and the second infusion section of the second cooling component is connected to the second infusion tube.

[0008] Beneficial effects: The distance between the first and second infusion pipes is relatively large, allowing the coolant entering through the first infusion pipe to flow sequentially into each heat exchange section, ensuring heat exchange efficiency and preventing coolant from flowing out prematurely from the second infusion pipe into some heat exchange sections that cannot enter. In addition, this arrangement of the first and second infusion pipes reduces the number of connecting pipes used, as the inlet and outlet requirements of all heat exchange sections can be met by a single first and a single second infusion pipe, greatly reducing the number of piping components used.

[0009] In one optional embodiment, the cooling components located at both sides along the first direction among the plurality of cooling components are all second cooling components, and at least one cooling component between two second cooling components is a first cooling component. The first infusion section of the first cooling component is connected to the first infusion tube, and the second infusion sections of the second cooling components are all connected to the second infusion tube. Alternatively, the cooling components located at both sides along the first direction among the plurality of cooling components are all first cooling components, and at least one cooling component between two second cooling components is a second cooling component. The first infusion section of the first cooling component is connected to the first infusion tube, and the second infusion section of the second cooling component is connected to the second infusion tube.

[0010] Beneficial effects: This arrangement of the first and second infusion tubes can form one of the following coolant delivery methods: single inlet and multiple outlet, multiple inlet and single outlet, or multiple inlet and multiple outlet. This allows the coolant to be diverted from a single inlet position, reducing the number of cells that each branch needs to cool, thereby improving the cooling effect at each location in the cooling system.

[0011] In one alternative embodiment, the cooling channel has a first connection port and a second connection port, the first connection port and the second connection port being located at the same end of the heat exchange section along the second direction;

[0012] The cooling assembly also includes a connecting seat. The first infusion section and the second infusion section are both connected to the connecting seat and are spaced apart from each other. The connecting seat is located at the same end of the heat exchange section having a first connection port and a second connection port. The first connection port communicates with the first infusion section, and the second connection port communicates with the second infusion section.

[0013] Beneficial effects: The first and second connection ports of the cooling channel are located at the same end of the heat exchange section. The temperature of the coolant gradually increases and the heat exchange efficiency decreases along the direction away from the first connection port, while the temperature of the coolant gradually decreases and the heat exchange efficiency increases along the direction away from the second connection port. Through the superposition of multiple channels with gradually decreasing and gradually increasing heat exchange efficiency, the heat dissipation effect of each section along the length of the heat exchange section tends to be consistent, which can avoid the situation of large temperature differences between different cells when cooling a row of cells.

[0014] In one optional embodiment, the first cooling assembly further includes an input section, and the first infusion section is connected to the first infusion tube through the input section, wherein the first infusion section and the input section are located on the same connector; the second cooling assembly further includes an output section, and the second infusion section is connected to the second infusion tube through the output section, wherein the second infusion section and the output section are located on the same connector.

[0015] Beneficial effects: The integrated connector design integrates the first infusion unit, the second infusion unit, the input unit, and the output unit into their respective connectors. Multiple connection functions can be achieved simultaneously through a single component. Each heat exchange unit can be connected to an adjacent heat exchange unit or a corresponding pipeline through a connector, which can effectively reduce the number of connection structures, simplify the structure, and reduce the risk of leakage.

[0016] In one alternative embodiment, the input section is located on the side of the first infusion section away from the heat exchange section, and / or the output section is located on the side of the second infusion section away from the heat exchange section.

[0017] Beneficial effects: This type of connector is located at the same end of the heat exchange section, which can effectively reduce the space occupied by the cooling components.

[0018] In one alternative embodiment, the cooling channel is reciprocated between opposite ends along a second direction within the heat exchange section.

[0019] Beneficial effects: This type of cooling channel can make the temperature uniformity of the heat exchange section along its own extension direction better, and can avoid the phenomenon that the cooling effect of the part of the heat exchange section closer to the first liquid infusion section is significantly better than that of the part farther away from the first liquid infusion section, thus improving the uniformity of the cell cooling process.

[0020] Secondly, this utility model also provides an electrical device, which includes: the cooling system mentioned above; and further includes: a housing having a receiving space, wherein the infusion assembly and the cooling assembly are both disposed within the receiving space; a cold source assembly (9) disposed outside the receiving space; and a battery cell located within the receiving space; the battery cell is disposed between the heat exchange sections of adjacent cooling assemblies.

[0021] In one alternative embodiment, the electrical equipment further has a third direction that intersects both the first direction and the second direction, wherein the heat exchange sections of adjacent cooling components are arranged in parallel, and the orthographic projection of the heat exchange section along the third direction onto the housing is a polygonal shape.

[0022] Beneficial effects: After the cooling system is assembled with the battery cell, the heat exchange section corresponding to the adjacent cooling components can directly fix the position of the battery cell without the need for additional positioning components, which can effectively reduce the number of components required for battery cell positioning.

[0023] In one optional embodiment, each of the multiple cells has two opposing first sidewalls along a first direction and two opposing second sidewalls along a second direction, and the area of ​​the first sidewalls is larger than that of the second sidewalls; the two first sidewalls are respectively disposed opposite to the heat exchange portions of two adjacent cooling assemblies.

[0024] Beneficial effects: This arrangement of battery cells allows their larger wall surface to come into contact with the heat exchange section of the cooling system, improving heat exchange efficiency. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the connection method of various parts in a cooling system according to an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram of the cooling components and fluid delivery components of the cooling system shown from a first-view perspective;

[0028] Figure 3 for Figure 2 A three-dimensional schematic diagram of the cooling assembly and infusion assembly from a second perspective;

[0029] Figure 4 for Figure 2 The top view of the cooling and connecting components assembled as shown;

[0030] Figure 5 for Figure 2 A three-dimensional schematic diagram of some cooling components of the cooling system shown;

[0031] Figure 6 for Figure 4 The diagram shows a three-dimensional schematic of the connecting components.

[0032] Figure 7 for Figure 6 The diagram shown is a 3D view of the connecting assembly cut open without the seals shown.

[0033] Figure 8 for Figure 2 A three-dimensional schematic diagram of the cooling components of the cooling system shown;

[0034] Figure 9 for Figure 2 An exploded view showing a partial cut-out of the cooling component;

[0035] Figure 10 for Figure 8 The diagram shows a cooling channel arrangement when the cooling assembly has one cooling channel.

[0036] Figure 11 for Figure 8 The diagram shown illustrates the cooling channel arrangement when the cooling assembly has multiple cooling channels.

[0037] Figure 12 for Figure 4 The diagram shows a cross-sectional view of the connector when the cooling assembly has multiple cooling channels;

[0038] Figure 13 for Figure 1 An exploded view of part of the heat exchange section of the cooling assembly in conjunction with the battery cell;

[0039] Figure 14 for Figure 2 The diagram shown is a three-dimensional representation of the cooling assembly and battery cell assembly.

[0040] Figure 15 for Figure 14 The diagram shows a three-dimensional schematic of the cooling system after the cooling components, battery cells, and housing are assembled.

[0041] Explanation of reference numerals in the attached figures:

[0042] 2. Infusion assembly; 201. First infusion tubing; 202. Second infusion tubing;

[0043] 3. Cooling assembly; 300. Heat exchange section; 301. Cooling channel; 3011. First cooling channel; 3012. Second cooling channel; 3013. First connection port; 3014. Second connection port; 3015. Heat exchange section; 3016. Connecting section; 302. Weight reduction cavity; 303. Reinforcing rib; 304. Connecting part; 310. First cooling assembly; 320. Second cooling assembly;

[0044] 400. Connecting seat; 401. First infusion unit; 402. Second infusion unit; 403. Connecting tube; 404. Input unit; 405. Output unit;

[0045] 500. Connecting assembly; 501. Pipe body; 5011. Annular groove; 502. Limiting element; 503. Sealing element; 504. Nozzle;

[0046] 6. Battery cell; 601. First sidewall; 602. Second sidewall; 7. Housing; 701. Accommodation space; 9. Cold source assembly; 901. Coolant source; 902. Conveying component; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] The following is combined with Figures 1 to 15 The following describes embodiments of the present invention.

[0049] According to an embodiment of the present invention, a cooling system is provided for cooling a battery cell 6. The cooling system has intersecting first direction X and second direction Y, and includes: a liquid infusion assembly 2, a plurality of cooling assemblies 3, and a cold source assembly 9. The liquid infusion assembly 2 includes a first liquid infusion pipe 201 and a second liquid infusion pipe 202. The plurality of cooling assemblies 3 are spaced apart along the first direction X. Each cooling assembly 3 includes a heat exchange section 300, a first liquid infusion section 401, and a second liquid infusion section 402. The heat exchange section 300 extends along the second direction Y and has a cooling channel 301 for coolant flow inside. The first liquid infusion section 401 and the second liquid infusion section 402 are both located at the same end of the heat exchange section 300 along the second direction Y and are respectively connected to the cooling channel 301. The plurality of cooling assemblies 3... The first infusion section 401 is connected in sequence, and the second infusion sections 402 of the plurality of cooling components 3 are connected in sequence. At least one first infusion section 401 is connected to the first infusion pipe 201, and at least one second infusion section 402 is connected to the second infusion pipe 202. The cold source component 9 includes a coolant source 901 containing coolant and a conveying component 902 for conveying coolant. One end of the coolant source 901 is connected to the first infusion pipe 201 through the conveying component 902, and the other end is connected to the second infusion pipe 202. The conveying component 902 has a first conveying state and a second conveying state. In the first conveying state, coolant flows from the first infusion pipe 201 into the second infusion pipe 202. In the second conveying state, coolant flows from the second infusion pipe 202 into the first infusion pipe 201.

[0050] In the cooling system of this embodiment, the coolant source 901 is connected to the liquid delivery assembly 2 via the delivery component 902. The delivery component 902 can periodically change the delivery direction of the coolant. After delivering the coolant in the current direction for a certain period of time, the delivery direction is changed, so that the initial first liquid delivery pipe becomes the second liquid delivery pipe, and the initial second liquid delivery pipe becomes the first liquid delivery pipe. This allows the coolant in the cooling system to circulate in a loop, making the areas with poor heat exchange and high temperature become areas with good heat exchange, while the areas with good heat exchange become areas with poor heat exchange. This makes the heat dissipation capacity of various parts of the cooling system more uniform, improves the temperature balance of the battery cells 6 in various parts of the electrical equipment, and effectively solves the problem of poor uniformity of cooling effect of existing spaced liquid cooling plates.

[0051] Specifically, it should be noted that the first infusion pipe 201 and the second infusion pipe 202 refer to the pipes used to connect the cooling assembly 3 to the coolant source 901; the heat exchange section 300 refers to the part of the cooling assembly 3 used to contact the battery cell 6 and exchange heat; the first infusion section 401 refers to the part of the cooling assembly 3 used to guide the coolant flowing into the first infusion pipe 201 into the cooling channel 301; and the second infusion section 402 refers to the part of the cooling assembly 3 used to guide the coolant in the cooling channel 301 into the second infusion pipe 202.

[0052] The number of first infusion tubes 201 and second infusion tubes 202 is not limited. Multiple cooling components 3 can be connected to the coolant source 901 through the same pair of first infusion tubes 201 and second infusion tubes 202, or multiple cooling components 3 can be connected to the coolant source 901 through their respective pairs of first infusion tubes 201 and second infusion tubes 202.

[0053] Furthermore, the specific form of the conveying component 902 is not limited, and it can be any type of pump body that can change the conveying direction. For details, please refer to the existing commonly used conveying pumps, which will not be elaborated on here.

[0054] It is understood that, as an alternative implementation, the conveying component 902 may be connected to only one of the first infusion pipe 201 or the second infusion pipe 202, as long as the effect of changing the direction of coolant delivery can be achieved.

[0055] In one possible implementation, the cooling component 3 located on one side along the first direction X among the plurality of cooling components 3 is the first cooling component 310. The first liquid delivery section 401 of the first cooling component 310 is connected to the first liquid delivery pipe 201. The cooling component 3 located on the other side along the first direction X among the plurality of cooling components 3 is the second cooling component 320. The second liquid delivery section 402 of the second cooling component 320 is connected to the second liquid delivery pipe 202. The distance between the first liquid delivery pipe 201 and the second liquid delivery pipe 202 is relatively large, so the coolant entering through the first liquid delivery pipe 201 can flow sequentially into each heat exchange section 300, ensuring the heat exchange effect and preventing the coolant from flowing out prematurely from the second liquid delivery pipe 202 in some heat exchange sections 300 that cannot enter. In addition, this arrangement of the first liquid delivery pipe 201 and the second liquid delivery pipe 202 can reduce the number of connecting pipes used. The liquid inlet and outlet needs of all heat exchange sections 300 can be met by a single first liquid delivery pipe 201 and a single second liquid delivery pipe 202, greatly reducing the number of pipeline components used.

[0056] In one possible implementation, the cooling components 3 located at the two edges along the first direction X among the multiple cooling components 3 are all second cooling components 320, and at least one cooling component 3 between two second cooling components 320 is a first cooling component 310. The first liquid delivery section 401 of the first cooling component 310 is connected to the first liquid delivery pipe 201, and the second liquid delivery sections 402 of the second cooling components 320 are all connected to the second liquid delivery pipe 202. This arrangement of the first liquid delivery pipe 201 and the second liquid delivery pipe 202 can form a single-inlet and multiple-outlet coolant delivery mode, so that the coolant enters at the center, causing it to split, reducing the number of cells that need to be cooled in each branch, thereby improving the cooling effect at each position in the cooling system.

[0057] In one possible implementation, the cooling components 3 located at both edges along the first direction X among the plurality of cooling components 3 are all first cooling components 310, and at least one cooling component 3 between two second cooling components 320 is a second cooling component 320. The first liquid delivery section 401 of the first cooling component 310 is connected to the first liquid delivery pipe 201, and the second liquid delivery sections 402 of the second cooling components 320 are all connected to the second liquid delivery pipes 202. This arrangement of the first liquid delivery pipe 201 and the second liquid delivery pipe 202 can form a multi-inlet single-outlet and multi-inlet multi-outlet coolant delivery mode, so that the coolant entry position is close to both ends, splitting the originally single coolant entry position, reducing the number of cells that need to be cooled by each branch, thereby improving the cooling effect at each position in the cooling system.

[0058] It should be noted that the middle part refers to any remaining part of the cooling components 3 excluding the two ends along the first direction X among the multiple cooling components 3.

[0059] In one possible implementation, the cooling channel 301 has a first connection port 3013 and a second connection port 3014, which are located at the same end of the heat exchange section 300 along the second direction Y. The cooling assembly 3 also includes a connecting seat 400, to which the first infusion section 401 and the second infusion section 402 are connected and spaced apart from each other. The connecting seat 400 is located at the same end of the heat exchange section 300 having the first connection port 3013 and the second connection port 3014. The first connection port 3013 communicates with the first infusion section 401, and the second connection port 3014 communicates with the second infusion section 402. As the coolant moves away from the first connection port 3013, its temperature gradually increases and its heat exchange efficiency decreases. As the coolant moves away from the second connection port 3014, its temperature gradually decreases and its heat exchange efficiency increases. Through the superposition of multiple pathways with gradually decreasing and gradually increasing heat exchange efficiency, the heat dissipation effect of each section of the heat exchange section 300 along its own length tends to be consistent, which can avoid the situation where there is a large temperature difference between different cells 6 when cooling a row of cells 6.

[0060] In one possible implementation, the first cooling assembly 310 further includes an input section 404, through which the first infusion section 401 communicates with the first infusion tube 201. The first infusion section 401 and the input section 404 are located on the same connector 400. The second cooling assembly 320 further includes an output section 405, through which the second infusion section 402 communicates with the second infusion tube 202. The second infusion section 402 and the output section 405 are located on the same connector 400. The connector 400, with its integrated design, integrates the first infusion section 401, the second infusion section 402, the input section 404, and the output section 405 into their respective connectors. Multiple connection functions can be achieved simultaneously with a single component. Each heat exchange section 300 can be connected to an adjacent heat exchange section 300 or a corresponding pipeline through a single connector 400, effectively reducing the number of connection structures, simplifying the structure, and lowering the risk of leakage.

[0061] In one possible implementation, the input section 404 is located on the side of the first infusion section 401 away from the heat exchange section 300, and the output section 405 is located on the side of the second infusion section 402 away from the heat exchange section 300. In this form, the connectors 400 are all located at the same end of the heat exchange section 300, which can effectively reduce the space occupied by the cooling assembly 3.

[0062] Specifically, when the connecting seats 400 of different heat exchange sections 300 are located at different ends, space needs to be reserved at both ends of the heat exchange section 300 for the installation of the connecting seats 400. This arrangement will greatly increase the installation space required for the cooling assembly 3. In this embodiment, the connecting seats 400 are arranged sequentially at intervals along the first direction, so that the connecting seats 400 are all located at the same end of the heat exchange section 300, thus eliminating the need for installation space at one end of the heat exchange section 300.

[0063] In one possible implementation, the cooling channel 301 is reciprocated between the two opposite ends of the heat exchange section along the second direction Y. This type of cooling channel 301 has a simple structure and fewer connection ports, which allows the coolant to flow fully in the heat exchange section 300, improving the efficiency and uniformity of the heat exchange section 300 in cooling the battery cell 6.

[0064] Specifically, such as Figure 10 As shown, the number of cooling channels 301 in a single heat exchange section 300 can be one or more. The reciprocating arrangement means that the cooling channel 301 includes multiple heat exchange sections 3015 and at least one connecting section 3016. The multiple heat exchange sections 3015 are arranged parallel and spaced apart along the third direction Z within the heat exchange section 300. At least one heat exchange section 3015 is connected to the first liquid delivery section 401, and at least one heat exchange section 3015 is connected to the second liquid delivery section 402. The connecting section 3016 is located at the end of the heat exchange section 3015, and adjacent heat exchange sections 3015 are sequentially connected end-to-end through the connecting section 3016. A weight-reducing cavity 302 is provided between adjacent heat exchange sections 3015. This type of cooling channel 301 has a simple structure and fewer connection ports, allowing the coolant to flow fully within the heat exchange section 300, improving the efficiency and uniformity of the heat exchange section 300 in cooling the battery cell 6.

[0065] Specifically, this type of cooling channel 301 is S-shaped inside the heat exchange section 300.

[0066] In one possible implementation, the infusion assembly 2 is located on the side of the connector 400 away from the heat exchange section 300. This type of infusion assembly 2 can prevent the coolant flowing inside it from exchanging heat with the battery cell 6, thus avoiding the situation where the local cooling effect is prominent and the temperature uniformity inside the battery pack deteriorates.

[0067] In one possible implementation, the cooling system further includes a connecting component 500, wherein at least one group of adjacent first infusion sections 401 are connected through the connecting component 500, and both ends of the connecting component 500 are respectively inserted into the corresponding first infusion section 401; and / or, at least one group of adjacent second infusion sections 402 are connected through the connecting component 500, and both ends of the connecting component 500 are respectively inserted into the corresponding second infusion section 402. In this type of insertion, the end of the connecting component 500 is located inside the connection port. Compared to the tube body 501 being sleeved outside the connection port, the inner and outer diameters of the tube body 501 in this embodiment are smaller. This type of tube body 501 can meet the connection strength requirements with a shorter length, and thus can play a reliable connection role between cooling components 3 with small spacing.

[0068] In one possible implementation, the first infusion unit 401 and / or the second infusion unit 402 have a connecting tube 403 for connecting to the connecting assembly 500. The connecting assembly 500 includes a tube body 501, a limiting member 502, and a nozzle 504. The tube body 501 has a cavity extending in a first direction X. The limiting member 502 is disposed on the outer wall of the tube body 501. The nozzle 504 is disposed at the end of the tube body 501 along the first direction X. The nozzle 504 is inserted into the connecting tube 403, and the end of the connecting tube 403 abuts against the limiting member 502. The relative position of the connecting tube 403 and the tube body 501 can be positioned by the limiting member 502 without the need for additional top parts. The structure is simple and reliable and can control the maximum insertion amount. In addition, the limiting member 502 cooperates with the end of the connecting tube 403. The end structure of the connecting tube 403 has high strength and is not easily damaged. This can prevent the connecting assembly 500 from directly acting on the body of the first infusion section 401 or the second infusion section 402 and damaging it.

[0069] The end of the connecting tube 403 is the opening of the connecting tube 403 that is away from the first infusion section 401 or the second infusion section 402.

[0070] In one possible implementation, each connecting assembly 500 has two limiting members 502, which are spaced apart along a first direction X on the tube body 501 and correspond to two adjacent connecting tubes 403 respectively. Each end of the tube body 501 along the first direction X has a nozzle 504, which is inserted into the two adjacent connecting tubes 403 respectively, and the two limiting members 502 abut against the corresponding connecting tubes 403. This type of limiting member 502 can abut against the corresponding connecting tubes 403 respectively. Because there is a certain gap between the limiting members 502, when adjacent connecting tubes 403 are compressed axially, the connecting tubes 403 can continue to move a certain distance after breaking through the limitation of the limiting members 502. This can act as a buffer when subjected to external impact, reducing the risk of damage to the first and second infusion sections 401 and improving the safety of the cooling system.

[0071] It is understood that, as an alternative implementation, the limiting member 502 can also be a single limiting member 502, with one limiting member 502 abutting and cooperating with the connecting pipes 403 on both sides respectively.

[0072] In one possible implementation, the limiting member 502 extends circumferentially along the tube body 501. This type of limiting member 502 has better integrity, and when the limiting member 502 and the corresponding connecting tube 403 abut against each other, the force on both is more even.

[0073] It is understood that, as an alternative implementation, the limiting member 502 may also be a plurality of positioning members arranged at circumferential intervals along the tube body 501, such as positioning blocks, positioning rods, etc.

[0074] In one possible implementation, the connecting assembly 500 further includes a seal 503, the inner wall of the connecting pipe 403 abutting against the outer wall of the nozzle 504 through the seal 503. The seal 503 can effectively improve the reliability of the connection between the connecting pipe 403 and the nozzle 504 and prevent coolant leakage.

[0075] The number of sealing elements 503 between a connecting pipe 403 and a nozzle 504 is not limited; there can be one or more, and the specific number can be selected according to the requirements.

[0076] In one possible implementation, the outer wall of the tube body 501 is provided with a plurality of annular grooves 5011 at intervals along the first direction X. The annular grooves 5011 are disposed between the nozzle 504 and the limiting member 502 and are used to install the sealing member 503. The annular grooves 5011 can restrict the movement of the sealing member 503 along the axial direction and further increase the contact area during sealing to ensure the reliability of the seal.

[0077] In one possible implementation, the heat exchange section 300 includes a cooling channel 301 and a weight reduction cavity 302. Both the cooling channel 301 and the weight reduction cavity 302 extend along the second direction Y and are spaced apart along the third direction Z. The cooling channel 301 is connected to the first liquid delivery section 401 and the second liquid delivery section 402. In this type of heat exchange section 300, the coolant flowing through the cooling channel 301 can cool the battery cell 6. The weight reduction cavity 302 can reduce the amount of coolant that can be contained inside the heat exchange section 300. By adjusting the volume ratio of the cooling channel 301 and the weight reduction cavity 302 inside the heat exchange section 300 during manufacturing, the total amount of coolant inside the heat exchange section 300 can be effectively controlled. This can effectively reduce the weight of the heat exchange section 300 during the heat dissipation process while meeting the heat dissipation requirements of the battery cell 6.

[0078] In addition, since the first liquid delivery section 401 and the second liquid delivery section 402 are directly connected to the cooling channel 301, there is no risk of coolant entering the weight reduction chamber 302. Therefore, when manufacturing the heat exchange section 300, it is not necessary to seal the weight reduction chamber 302 at the end, which can effectively simplify the structure of the heat exchange section 300 and reduce the weight and manufacturing difficulty of the heat exchange section 300.

[0079] In one possible implementation, multiple heat exchange sections 3015 are spaced apart along the height direction of the heat exchange section 300. In this type of extended cooling channel 301, the coolant flows in an S-shape along the height direction of the heat exchange section 300. This type of cooling channel 301 can make the temperature uniformity of the heat exchange section 300 along its own extension direction better, and can avoid the phenomenon that the cooling effect of the part of the heat exchange section 300 closer to the first liquid delivery section 401 is significantly better than that of the part farther away from the first liquid delivery section 401, thereby improving the uniformity of the cooling process of the battery cell 6.

[0080] In one possible implementation, there are four heat exchange sections 3015, which are sequentially connected end-to-end by connecting sections 3016 to form a cooling channel 301. The heat exchange sections 3015 located on either side along the third direction Z are respectively connected to the first infusion section 401 and the second infusion section 402. This type of cooling channel 301 allows for better temperature uniformity of the heat exchange section 300 along its extension direction, preventing the phenomenon where the cooling effect of the portion of the heat exchange section 300 closer to the first infusion section 401 is significantly better than that of the portion farther from the first infusion section 401, thus improving the uniformity of the cooling process of the battery cell 6.

[0081] In one possible implementation, a single heat exchange section 300 contains multiple cooling channels 301, which are spaced apart. Each cooling channel 301 is connected to a first liquid delivery section 401 and a second liquid delivery section 402, respectively, and a weight-reducing cavity 302 is formed between adjacent cooling channels 301. The coolant circulates simultaneously in multiple cooling channels 301, which can effectively improve the cooling efficiency of the heat exchange section 300. The coolant can flow through multiple cooling channels 301 simultaneously through a single first liquid delivery section 401 and a single second liquid delivery section 402, resulting in a simple and reliable structure with a small number of components.

[0082] In one possible implementation, the cooling channel 301 in a single heat exchange section 300 includes a first cooling channel 3011 and a second cooling channel 3012. The first cooling channel 3011 and the second cooling channel 3012 are spaced apart, and the first connection port 3013 and the second connection port 3014 of the first cooling channel 3011 and the second cooling channel are all located at the same end of the heat exchange section 300 along the second direction Y. Along the first direction X, the projection of the second cooling channel 3012 on the heat exchange section 300 surrounds the projection of the first cooling channel 3011 on the heat exchange section 300.

[0083] It should be noted that, for example Figure 8 and Figure 9 The dashed lines with arrows in the diagram illustrate whether the number of cooling channels 301 in the heat exchange section 300 is one or more.

[0084] In one possible implementation, the inner wall of the cooling channel 301 and / or the weight reduction cavity 302 is provided with reinforcing ribs 303. The reinforcing ribs 303 can further improve the overall structural strength of the heat exchange part 300, reduce the deformation of the heat exchange part 300 under stress during the cooling process, and ensure that the heat exchange part 300 continues to be in contact with the battery cell 6.

[0085] Specifically, there is no limitation on the specific location of the reinforcing rib 303. It can be set alone in the cooling channel 301 or the weight reduction cavity 302, or the reinforcing rib 303 can be set in both the cooling channel 301 and the weight reduction cavity 302. There is no limitation on the number of reinforcing ribs 303. One can be set in each cooling channel 301 and the weight reduction cavity 302, or multiple can be set. The choice can be made flexibly according to the needs.

[0086] Preferably, in order to avoid the reinforcing rib 303 from obstructing the flow of coolant, the extending direction of the reinforcing rib 303 is consistent with the extending direction of the corresponding cooling channel 301 or weight reduction cavity 302.

[0087] In one possible implementation, the heat exchange section 300 further includes a connecting section 304, which is located at the end of the heat exchange section 300 along the second direction Y. The heat exchange section 300 is connected to the first liquid delivery section 401 and the second liquid delivery section 402 via the connecting section 304. The connecting section 304 can form a reliable connection support structure at the first connection port 3013 and the second connection port 3014 of the cooling channel 301, which facilitates the connection between the cooling channel 301 and the first liquid delivery section 401 and the second liquid delivery section 402, while also reducing the risk of leakage during the plug-in connection, thus improving the convenience of component assembly and the reliability of the assembled component.

[0088] It is understood that, as an alternative implementation, the connecting part 304 may be omitted, and a portion of the first infusion part 401 and the second infusion part 402 may be inserted into the cooling channel 301.

[0089] According to an embodiment of the present invention, in another aspect, an electrical device is provided, which includes the above-mentioned cooling system, housing 7 and battery cell 6; housing 7 has a receiving space 701, and infusion assembly 2 and cooling assembly 3 are both disposed in the receiving space 701; cold source assembly 9 is disposed outside the receiving space 701; battery cell 6 is located in the receiving space 701; there are multiple battery cells 6 and they are disposed between the heat exchange sections 300 of adjacent cooling assemblies 3.

[0090] In one possible implementation, each of the battery cells 6 has two opposing first sidewalls 601 along a first direction X and two opposing second sidewalls 602 along a second direction Y, with the area of ​​the first sidewalls 601 being larger than that of the second sidewalls 602; the two first sidewalls 601 are respectively disposed opposite to the heat exchange sections 300 of two adjacent cooling assemblies 3. This arrangement of the battery cells 6 allows their larger wall surface to contact the heat exchange section 300 of the cooling system, thereby improving heat exchange efficiency.

[0091] In one possible implementation, the electrical device further has a third direction Z that intersects both the first direction X and the second direction Y. The heat exchange sections 300 of adjacent cooling components 3 are arranged in parallel, and the orthographic projection of the heat exchange section 300 along the third direction Z onto the housing 7 is a polygonal shape. After the cooling system is assembled with the battery cell 6, the heat exchange sections corresponding to adjacent cooling components 3 can directly fix the position of the battery cell 6 without the need for additional positioning components, effectively reducing the number of components required for positioning the battery cell 6.

[0092] The heat exchange section 300 includes multiple heat dissipation sections connected in sequence along the second direction Y.

[0093] Specifically, the included angle between adjacent heat dissipation sections in a cooling component 3 is not limited and can be obtuse, right, or acute, as long as it is set in a zigzag shape.

[0094] Preferably, adjacent heat dissipation sections in a cooling assembly 3 are arranged at an obtuse angle.

[0095] In one possible implementation, each column of cells 6 is arranged along its own length direction;

[0096] The number of battery cells 6 between the two corresponding heat dissipation sections is not limited; it can be one or more.

[0097] Preferably, one side of a heat dissipation section corresponds to only one battery cell 6.

[0098] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cooling system for cooling a battery cell (6), the cooling system having intersecting first direction (X) and second direction (Y), characterized in that, include: The infusion assembly (2) includes a first infusion tube (201) and a second infusion tube (202); Multiple cooling components (3) are spaced apart along the first direction (X). Each cooling component (3) includes a heat exchange section (300), a first liquid delivery section (401), and a second liquid delivery section (402). The heat exchange section (300) extends along the second direction (Y) and has a cooling channel (301) for coolant flow inside. The first liquid delivery section (401) and the second liquid delivery section (402) are both located at the same end of the heat exchange section (300) along the second direction (Y) and are respectively connected to the cooling channel (301). The first liquid delivery sections (401) of the multiple cooling components (3) are connected sequentially, and the second liquid delivery sections (402) of the multiple cooling components (3) are connected sequentially. At least one first liquid delivery section (401) is connected to the first liquid delivery tube (201), and at least one second liquid delivery section (402) is connected to the second liquid delivery tube (202). The cold source assembly (9) includes a coolant source (901) for loading the coolant and a conveyor (902) for conveying the coolant. One end of the coolant source (901) is connected to the first infusion pipe (201) through the conveyor (902), and the other end is connected to the second infusion pipe (202). The conveyor (902) has a first conveying state and a second conveying state. In the first conveying state, the coolant flows from the first infusion pipe (201) into the second infusion pipe (202). In the second conveying state, the coolant flows from the second infusion pipe (202) into the first infusion pipe (201).

2. The cooling system according to claim 1, characterized in that, The cooling component (3) located on one side along the first direction (X) among the plurality of cooling components (3) is the first cooling component (310), and the first infusion section (401) of the first cooling component (310) is connected to the first infusion tube (201). The cooling component (3) located on the other side along the first direction (X) among the plurality of cooling components (3) is the second cooling component (320), and the second infusion section (402) of the second cooling component (320) is connected to the second infusion tube (202).

3. The cooling system according to claim 1, characterized in that, Among the plurality of cooling components (3), the cooling components (3) located at both sides along the first direction (X) are all second cooling components (320), and at least one of the cooling components (3) between two second cooling components (320) is a first cooling component (310). The first infusion section (401) of the first cooling component (310) is connected to the first infusion tube (201), and the second infusion section (402) of the second cooling component (320) is connected to the second infusion tube (202). Alternatively, among the multiple cooling components (3), the cooling components (3) located at both sides along the first direction (X) are all first cooling components (310), and at least one of the cooling components (3) between the two second cooling components (320) is a second cooling component (320). The first infusion section (401) of the first cooling component (310) is connected to the first infusion tube (201), and the second infusion section (402) of the second cooling component (320) is connected to the second infusion tube (202).

4. The cooling system according to any one of claims 2 to 3, characterized in that, The cooling channel (301) has a first connection port (3013) and a second connection port (3014), the first connection port (3013) and the second connection port (3014) being located at the same end of the heat exchange section (300) along the second direction (Y); The cooling assembly (3) further includes a connecting seat (400), the first infusion section (401) and the second infusion section (402) are both connected to the connecting seat (400) and are spaced apart from each other. The connecting seat (400) is located at the same end of the heat exchange section (300) having the first connecting port (3013) and the second connecting port (3014). The first connecting port (3013) communicates with the first infusion section (401), and the second connecting port (3014) communicates with the second infusion section (402).

5. The cooling system according to claim 4, characterized in that, The first cooling assembly (310) also has an input section (404), through which the first infusion section (401) is connected to the first infusion tube (201), and the first infusion section (401) and the input section (404) are located on the same connector (400); The second cooling assembly (320) also has an output section (405), and the second infusion section (402) is connected to the second infusion tube (202) through the output section (405). The second infusion section (402) and the output section (405) are located on the same connector (400).

6. The cooling system according to claim 5, characterized in that, The input section (404) is located on the side of the first infusion section (401) away from the heat exchange section (300), and / or the output section (405) is located on the side of the second infusion section (402) away from the heat exchange section (300).

7. The cooling system according to any one of claims 1 to 3, characterized in that, The cooling channel (301) is reciprocated between the two opposite ends of the heat exchange section (300) along the second direction (Y).

8. An electrical appliance, characterized in that, The cooling system comprising any one of claims 1 to 7; further comprising: The housing (7) has a receiving space (701), the infusion assembly (2) and the cooling assembly (3) are both disposed in the receiving space (701); the cold source assembly (9) is disposed outside the receiving space (701); The battery cell (6) is located within the accommodating space (701); the battery cell (6) is disposed between the heat exchange sections (300) of the adjacent cooling assembly (3).

9. The electrical equipment according to claim 8, characterized in that, The electrical equipment also has a third direction (Z) that intersects the first direction (X) and the second direction (Y) simultaneously, wherein the heat exchange parts (300) of the adjacent cooling components (3) are arranged in parallel, and the orthographic projection of the heat exchange parts (300) along the third direction (Z) on the housing (7) is a broken line shape.

10. The electrical equipment according to claim 9, characterized in that, Each of the multiple battery cells (6) has two opposing first sidewalls (601) along the first direction (X) and two opposing second sidewalls (602) along the second direction (Y), and the area of ​​the first sidewall (601) is larger than that of the second sidewall (602); the two first sidewalls (601) are respectively disposed opposite to the heat exchange portions (300) of the two adjacent cooling assemblies (3).

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