A square super capacitor cooling and heating integrated system

Abstract

The application provides a square super capacitor heat dissipation and heating integrated system, and belongs to the technical field of super capacitor heat management, and comprises: integrated heat management units, the number of which is at least one, and the integrated heat management units are installed between two adjacent square super capacitors; the integrated heat management unit comprises a heating gasket, two first heat-conducting silica gel sheets and two cooling pipe groups, the two first heat-conducting silica gel sheets are in contact with the two adjacent square super capacitors respectively, the heating gasket is arranged between the two first heat-conducting silica gel sheets, and the two cooling pipe groups form a double-layer cooling structure. The application has the beneficial effect that: an integrated heat dissipation and heating system is provided, the system has a reasonable and effective structure, can solve the problem of high temperature caused by high-rate discharge and harsh working conditions, and can heat the super capacitor under low-temperature harsh working conditions.

Description

Technical Field

[0001] This invention belongs to the field of thermal management technology for supercapacitors, and relates to an integrated heat dissipation and heating system for a square supercapacitor. Background Technology

[0002] With the increasing emphasis placed on the new energy industry by the country in recent years, more and more fields have begun to adopt new energy devices as alternatives to fuel oil. Among them, lithium-ion batteries and supercapacitors have emerged as representatives. However, lithium-ion batteries have problems such as low energy density and safety hazards. Meanwhile, supercapacitors have the characteristics of fast charging and discharging speed, wide operating range, long cycle life and high safety, and have become the energy storage device in the new energy field in recent years.

[0003] Supercapacitors have two energy storage mechanisms: double-layer energy storage and quasi-capacitive energy storage. Double-layer energy storage mainly refers to the storage of energy through the double layer formed between the electrode material and the electrolyte. Quasi-capacitive energy storage mainly refers to the storage of energy through the redox reaction on the electrode surface. Specifically, supercapacitors are mainly divided into four types: double-layer capacitors, quasi-capacitors, hybrid supercapacitors, and battery-type supercapacitors. Among them, double-layer supercapacitors are widely used due to their excellent power density and lifespan.

[0004] Double-layer supercapacitors inherently possess high power and frequent charge-discharge characteristics, necessitating careful design of their assembled structure to dissipate heat effectively and support and secure individual modules. Modules typically employ liquid cooling and air cooling. Liquid cooling utilizes the high specific heat capacity of liquids, distributing heat through various channels to remove heat from the module's interior. Air cooling leverages the high fluidity of the gas within the module, using inlet and outlet vents to carry away heat. However, liquid cooling suffers from drawbacks such as leakage and uneven pipe distribution leading to temperature variations, while air cooling suffers from low space utilization and temperature variations due to location. Nevertheless, liquid cooling is generally more effective than air cooling. Furthermore, due to varying application environments, modules in harsh conditions require heating to achieve optimal performance.

[0005] Based on the above, there are currently some systems for thermal management of supercapacitors that can dissipate heat or heat the supercapacitors as needed, but due to design and layout reasons, they are not suitable for double-layer supercapacitors. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in the prior art by proposing an integrated heat dissipation and heating system for a square supercapacitor.

[0007] The objective of this invention can be achieved through the following technical solution: an integrated heat dissipation and heating system for a square supercapacitor, for installation in a battery pack formed by at least two square supercapacitors arranged sequentially, comprising:

[0008] An integrated thermal management unit, wherein the number of the integrated thermal management units is at least one, and the integrated thermal management unit is installed between two adjacent square supercapacitors;

[0009] The integrated thermal management unit includes a heating pad, two first thermally conductive silicone pads, and two cooling pipe groups. The two first thermally conductive silicone pads are in contact with two adjacent square supercapacitors. The heating pad is disposed between the two first thermally conductive silicone pads. One cooling pipe group is disposed between one first thermally conductive silicone pad and the heating pad, and the other cooling pipe group is disposed between the other first thermally conductive silicone pad and the heating pad. The two cooling pipe groups form a double-layer cooling structure.

[0010] Preferably, there is a gap between two adjacent square supercapacitors for accommodating the integrated thermal management unit, and the number of the integrated thermal management units is the same as the number of gaps in the battery pack and is arranged in a one-to-one correspondence.

[0011] Preferably, the device also includes two circulation channels, which are respectively installed on both sides of the battery pack, and the two cooling pipe groups of the integrated thermal management unit are respectively connected to the two circulation channels.

[0012] Preferably, the device also includes a heating plate, which is mounted on the bottom of the battery pack, and the bottom of the heating pad is connected to the heating plate.

[0013] Preferably, the cooling pipe assembly is in contact with the first thermally conductive silicone pad and the heating pad.

[0014] Preferably, a second thermally conductive silicone pad is provided between the circulation channel and the side of the battery pack, and the side of the square supercapacitor contacts the circulation channel through the second thermally conductive silicone pad.

[0015] Preferably, the system also includes a circulating water pump, wherein the circulating flow channel includes at least one circulating pipe arranged in a U-shape, and the inlet and outlet of the circulating pipe are connected to the circulating water pump to form a closed circulation loop.

[0016] Preferably, the circulation pipe includes a first pipe extending from one end of the battery pack to the other end and a second pipe extending from the other end of the battery pack to one end. The first pipe and the second pipe are integrally connected. The inlet of the circulation pipe is located in the first pipe, and the outlet of the circulation pipe is located in the second pipe. The cooling pipe assembly includes at least one cooling pipe, which is arranged in a curved shape. The cooling pipe and the circulation pipe are arranged in a one-to-one correspondence. The two ends of the cooling pipe are respectively connected to the first pipe and the second pipe. The circulating water pump pumps coolant through the first pipe into the cooling pipe, and the coolant flowing out of the cooling pipe flows into the second pipe.

[0017] Preferably, the cooling pipes of the cooling pipe group are divided into at least one group, and the cooling pipes of the group are arranged concentrically from the inside to the outside in a coil structure.

[0018] Preferably, the two cooling pipe groups of the integrated thermal management unit are centrally symmetrically distributed, and the circulating water pumps corresponding to the two circulating channels are located on the other two sides of the battery pack.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. A system integrating heat dissipation and heating is provided. The system has a reasonable and effective structure, which can solve the problem of high temperature caused by high-rate discharge and harsh operating conditions, and can also heat the supercapacitor under harsh operating conditions at low temperature.

[0021] 2. There is a gap between two adjacent square supercapacitors. The number of integrated thermal management units is the same as the number of gaps. In the actual structure, there are multiple gaps in the battery pack, so there are also multiple integrated thermal management units. Each square supercapacitor can be cooled or heated through multiple integrated thermal management units.

[0022] 3. The purpose of setting up two circulation channels is to provide coolant for the two cooling pipe groups in the integrated thermal management unit for cooling, as well as to merge the coolant after absorbing heat.

[0023] 4. The system has multiple heating pads, and the bottom of each heating pad is connected to a heating plate. The heating plate can transfer heat to all heating pads to heat each square supercapacitor evenly, ensuring that the heat generated by the heating plate can be transferred to the square supercapacitor in a timely and effective manner through the heating pads, cooling pipe assembly, and first thermally conductive silicone sheet.

[0024] 5. Two first thermally conductive silicone pads are in contact with the front and back of the square supercapacitor, while two second thermally conductive silicone pads are in contact with the sides of the square supercapacitor. Therefore, thermally conductive silicone pads are attached around the square supercapacitor, which can dissipate heat or heat the square supercapacitor in a timely and all-round manner.

[0025] 6. The cooling structure adopts a centrally symmetrical layout, with the circulation pipes of the two circulation channels symmetrically arranged. The low flow rate position on one circulation channel (the upper circulation pipe on one side of the battery pack) corresponds to the high flow rate position on the other circulation channel (the circulation pipe on the other side of the battery pack). If the coolant flow rate in one cooling pipe group is relatively low, the coolant flow rate in the other cooling pipe group that is symmetrical to it is relatively fast. This avoids the situation where the coolant in both cooling pipe groups in the integrated thermal management unit is at a low flow rate. This can effectively compensate for the problem of poor cooling effect caused by low flow rate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the integrated heat dissipation and heating system of the present invention.

[0027] Figure 2 This is a schematic diagram of the integrated heat dissipation and heating system of the present invention installed in a battery pack.

[0028] Figure 3 This is a schematic diagram of the circulating flow channel of the present invention located on one side of the battery pack.

[0029] Figure 4 This is a schematic diagram showing the circulating flow channel of the present invention located on the other side of the battery pack.

[0030] Figure 5 This is a schematic diagram of the integrated thermal management unit of the present invention.

[0031] Figure 6 This is a schematic diagram of the cooling pipe assembly of the present invention.

[0032] Figure 7 This is a schematic diagram of the structure of the two sets of cooling pipe assemblies of the present invention.

[0033] In the diagram, 100 is a square supercapacitor; 200 is an integrated thermal management unit; 210 is a heating pad; 220 is a first thermally conductive silicone pad; 230 is a cooling pipe assembly; 231 is a cooling pipe; 300 is a circulation channel; 310 is a circulating water pump; 320 is a circulation pipe; 321 is a first pipe body; 322 is a second pipe body; 400 is a heating plate; and 500 is a second thermally conductive silicone pad. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0035] like Figure 1-7 As shown, an integrated heat dissipation and heating system for a square supercapacitor is used to install in a battery pack (not shown in the figure) formed by at least two square supercapacitors 100 arranged in sequence. The system includes: an integrated thermal management unit 200, at least one of which is installed between two adjacent square supercapacitors 100; the integrated thermal management unit 200 includes a heating pad 210, two first thermally conductive silicone pads 220, and two cooling pipe groups 230. The two first thermally conductive silicone pads 220 are in contact with two adjacent square supercapacitors 100 respectively. The heating pad 210 is disposed between the two first thermally conductive silicone pads 220. One cooling pipe group 230 is disposed between one first thermally conductive silicone pad 220 and the heating pad 210, and the other cooling pipe group 230 is disposed between another first thermally conductive silicone pad 220 and the heating pad 210, forming a double-layer cooling structure.

[0036] Preferably, there is a gap (not shown in the figure) between two adjacent square supercapacitors 100 for accommodating the integrated thermal management unit 200, and the number of integrated thermal management units 200 is the same as the number of gaps in the battery pack and is arranged in a one-to-one correspondence.

[0037] This integrated heat dissipation and heating system is a thermal management system for square double-layer supercapacitors. It integrates heat dissipation and heating functions. To facilitate the explanation of the structure and working principle of the integrated heat dissipation and heating system, the implementation example is that the system is installed in a square supercapacitor. Since the battery pack consists of multiple square supercapacitors 100 arranged in sequence, there are gaps between adjacent square supercapacitors 100. The number of integrated thermal management units 200 is the same as the number of gaps, and the number of gaps is one less than the number of square supercapacitors 100. In the actual structure, there are multiple gaps in the battery pack, so there are also multiple integrated thermal management units 200. The multiple integrated thermal management units 200 can dissipate heat or heat each square supercapacitor 100.

[0038] The integrated thermal management unit 200 is essentially similar to a vertically placed three-layer plate structure. Cooling pipe assemblies 230 are provided between the two first thermally conductive silicone pads 220 and the heating pads 210. The thermally conductive silicone pads are made of thermally conductive silicone and have excellent thermal conductivity. The first thermally conductive silicone pads 220 mainly increase the heat conduction area, that is, increase the contact area during heat dissipation or heating. The heating pads 210 can provide the heat required for heating. Under low-temperature conditions, they provide a suitable temperature for the coolant in the two cooling pipe assemblies 230 and transfer it to the two adjacent square supercapacitors 100 through the two first thermally conductive silicone pads 220. Under high-temperature conditions, the coolant in the cooling pipe assemblies 230 can carry away the heat from the square supercapacitors 100 through the first thermally conductive silicone pads 220, thereby achieving a heat dissipation effect.

[0039] The two cooling pipe groups 230 form a double-layer cooling structure, which can not only greatly improve the cooling efficiency, but also make the cooling effect evenly applied to the two adjacent square supercapacitors 100. The first thermally conductive silicone pad 220 can increase the contact area between the cooling pipe group 230 and the square supercapacitor 100. In addition to heating the two square supercapacitors 100, the heating pad 210 can also prevent the two cooling pipe groups 230 from directly contacting each other.

[0040] In the actual structure, the two sides of the heating pad 210 are in contact with the two first thermally conductive silicone sheets 220 respectively, thereby increasing the contact area with the two adjacent square supercapacitors 100. During heating, the heat of the heating pad 210 is transferred to the two adjacent square supercapacitors 100 through the two first thermally conductive silicone sheets 220, thereby improving the heating efficiency.

[0041] The system has a reasonable and effective structure, which can solve the problem of high temperature caused by high-rate discharge and harsh operating conditions, and can also heat the supercapacitor under harsh operating conditions at low temperature.

[0042] Preferably, the cooling pipe assembly 230 is in contact with the first thermally conductive silicone sheet 220 and the heating pad 210. Therefore, during heat dissipation, the cooling pipe assembly 230 contacts the square supercapacitor 100 through the first thermally conductive silicone sheet 220, thereby carrying away heat. During heating, the heating pad 210 heats the coolant in the cooling pipe assembly 230 and the first thermally conductive silicone sheet 220, thereby heating the square supercapacitor 100.

[0043] like Figure 1-3 , Figure 6 , Figure 7As shown, the integrated heat dissipation and heating system also includes two circulation channels 300, which are respectively installed on both sides of the battery pack. The two cooling pipe groups 230 of the integrated thermal management unit 200 are respectively connected to the two circulation channels 300.

[0044] The circulation channel 300 is actually a pipe assembly structure for the circulation of coolant. In the actual structure, one cooling pipe assembly 230 of all integrated thermal management units 200 is connected to the circulation channel 300 on one side of the battery pack, while the other cooling pipe assembly 230 of all integrated thermal management units 200 is connected to the circulation channel 300 on the other side of the battery pack. Therefore, the purpose of setting up two circulation channels 300 is to provide coolant for the two cooling pipe assemblies 230 in the integrated thermal management unit 200 for cooling and to collect the coolant after absorbing heat.

[0045] The integrated heat dissipation and heating system also includes a heating plate 400, which is mounted on the bottom of the battery pack. The bottom of the heating pads 210 is connected to the heating plate 400. Since there are multiple integrated thermal management units 200, there are multiple heating pads 210 in this system. The bottom of each heating pad 210 is connected to the heating plate 400. The heating plate 400 can transfer heat to all the heating pads 210, thereby uniformly heating each square supercapacitor 100. This ensures that the heat generated by the heating plate 400 can be transferred to the square supercapacitor 100 in a timely and effective manner through the heating pads 210, the cooling pipe assembly 230, and the first thermally conductive silicone sheet 220.

[0046] like Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, a second thermally conductive silicone sheet 500 is provided between the circulation channel 300 and the side of the battery pack, and the side of the square supercapacitor 100 contacts the circulation channel 300 through the second thermally conductive silicone sheet 500.

[0047] Two first thermally conductive silicone pads 220 are in contact with the front and back of the square supercapacitor 100, while two second thermally conductive silicone pads 500 are in contact with the two sides of the square supercapacitor 100. Therefore, thermally conductive silicone pads are attached around the square supercapacitor 100, which can dissipate heat or heat the square supercapacitor 100 in a timely and all-round manner.

[0048] It should be noted that during heat dissipation and cooling, the cooling pipe assembly 230 cools two sides of the square supercapacitor 100 through the first thermally conductive silicone pad 220, and the circulation channel 300 cools the other two sides of the square supercapacitor 100 through the second thermally conductive silicone pad 500. During heating, the heating pad 210 can heat the coolant in the cooling pipe assembly 230, thereby heating the two sides of the square supercapacitor 100 through the first thermally conductive silicone pad 220. At the same time, the heated coolant flows into the circulation channel 300, and the circulation channel 300 heats the other two sides of the square supercapacitor 100 through the second thermally conductive silicone pad 500.

[0049] like Figure 1-7 As shown, the integrated heat dissipation and heating system also includes a circulating water pump 310. The circulating flow channel 300 includes at least one circulating pipe 320, which is arranged in a U-shape. The inlet and outlet of the circulating pipe 320 are connected to the circulating water pump 310 to form a closed loop. In the actual structure, multiple circulating pipes 320 are distributed along the side of the battery pack, allowing the coolant to circulate within the closed loop of the circulating pipes 320.

[0050] Preferably, the circulation pipe 320 includes a first pipe body 321 extending from one end of the battery pack to the other end and a second pipe body 322 extending from the other end of the battery pack to one end. The first pipe body 321 and the second pipe body 322 are integrally connected. The inlet of the circulation pipe 320 is located in the first pipe body 321, and the outlet of the circulation pipe 320 is located in the second pipe body 322. The cooling pipe assembly 230 includes at least one cooling pipe 231. The cooling pipe 231 is arranged in a curved shape. The cooling pipe 231 and the circulation pipe 320 are arranged in a one-to-one correspondence. The two ends of the cooling pipe 231 are respectively connected to the first pipe body 321 and the second pipe body 322. The circulating water pump 310 pumps coolant through the first pipe body 321 into the cooling pipe 231, and the coolant flowing out of the cooling pipe 231 flows into the second pipe body 322.

[0051] In the actual structure, since the circulation pipe 320 is arranged in a U-shape, the circulation pipe 320 has two internal pipe bodies 321 and 322 with opposite internal flow directions. The circulating water pump 310 pumps the coolant into the first pipe body 321. After absorbing heat, the coolant flows into the second pipe body 322. The coolant in the second pipe body 322 flows back to the circulating water pump 310. The coolant in the first pipe body 321 flows into the corresponding cooling pipe 231, and the coolant used in the cooling pipe 231 flows into the second pipe body 322.

[0052] Preferably, the cooling pipes 231 of the cooling pipe group 230 are divided into at least one group, and the group of cooling pipes 231 are arranged concentrically from the inside to the outside to form a coil structure.

[0053] The two cooling pipe groups 230 of the integrated thermal management unit 200 are centrally symmetrically distributed, and the circulating water pumps 310 corresponding to the two circulation channels 300 are located on the other two sides of the battery pack. Since the two cooling pipe groups 230 of the integrated thermal management unit 200 are symmetrically arranged, the layout of the circulation channels 300 and the circulating water pumps 310 can effectively compensate for the problem of poor cooling effect caused by low flow rate.

[0054] Specifically, because the circulation pipe 320 is relatively long and multiple cooling pipes 231 are connected along its length, there is uneven flow velocity at different locations on the circulation pipe 320. Generally speaking, the flow velocity will decrease at the location of the circulation pipe 320 that is far from the circulating water pump 310 (i.e., the location far from the inlet, referred to as the low flow velocity location below), while the flow velocity will be faster at the location that is close to the circulating water pump 310 (referred to as the high flow velocity location below). The cooling pipe group 230 connected to the location of the circulation pipe 320 that is far from the circulating water pump 310 will have poor cooling effect due to the low flow velocity.

[0055] To address the aforementioned issues, in this embodiment, the cooling structure adopts a centrally symmetrical layout, with the circulation pipes 320 of the two circulation channels 300 symmetrically arranged. The low-velocity position on one circulation channel 300 (the upper circulation pipe 320 on one side of the battery pack) corresponds to the high-velocity position on the other circulation channel 300 (the circulation pipe 320 on the other side of the battery pack). If the coolant velocity in one cooling pipe group 230 is relatively low, the coolant velocity in the other cooling pipe group 230, which is symmetrical to it, is relatively fast. This avoids the situation where the coolant in both cooling pipe groups 230 within the integrated thermal management unit 200 has a low velocity, thus effectively compensating for the poor cooling effect caused by low velocity.

[0056] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0057] Furthermore, in this invention, descriptions involving "first," "second," "a," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction between two elements, unless otherwise explicitly limited.

[0059] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. An integrated heat dissipation and heating system for a square supercapacitor, for installation in a battery pack formed by sequentially arranging at least two square supercapacitors (100), characterized in that, include: An integrated thermal management unit (200) is provided, the number of which is at least one, and the integrated thermal management unit (200) is installed between two adjacent square supercapacitors (100); The integrated thermal management unit (200) includes a heating pad (210), two first thermally conductive silicone pads (220), and two cooling pipe groups (230). The two first thermally conductive silicone pads (220) are in contact with two adjacent square supercapacitors (100). The heating pad (210) is disposed between the two first thermally conductive silicone pads (220). One cooling pipe group (230) is disposed between one first thermally conductive silicone pad (220) and the heating pad (210). The other cooling pipe group (230) is disposed between the other first thermally conductive silicone pad (220) and the heating pad (210). The two cooling pipe groups (230) form a double-layer cooling structure. It also includes two circulation channels (300), and the two circulation channels (300) are respectively installed on both sides of the battery pack. The two cooling pipe groups (230) of the integrated thermal management unit (200) are respectively connected to the two circulation channels (300). It also includes a heating plate (400) mounted on the bottom of the battery pack, and the bottom of the heating pad (210) is connected to the heating plate (400); The cooling pipe assembly (230) is in contact with the first thermally conductive silicone sheet (220) and the heating pad (210); A second thermally conductive silicone pad (500) is provided between the circulation channel (300) and the side of the battery pack, and the side of the square supercapacitor (100) contacts the circulation channel (300) through the second thermally conductive silicone pad (500); It also includes a circulating water pump (310), and the circulating flow channel (300) includes at least one circulating pipe (320), the circulating pipe (320) is arranged in a U-shape, and the inlet and outlet of the circulating pipe (320) are connected to the circulating water pump (310) to form a closed circulation loop; The circulation pipe (320) includes a first pipe body (321) extending from one end of the battery pack to the other end and a second pipe body (322) extending from the other end of the battery pack to one end. The first pipe body (321) and the second pipe body (322) are integrally connected. The inlet of the circulation pipe (320) is located in the first pipe body (321), and the outlet of the circulation pipe (320) is located in the second pipe body (322). The cooling pipe assembly (230) includes at least one cooling pipe. (231) The cooling pipe (231) is arranged in a curved shape. The cooling pipe (231) and the circulation pipe (320) are arranged one-to-one. The two ends of the cooling pipe (231) are respectively connected to the first pipe body (321) and the second pipe body (322). The circulating water pump (310) pumps the coolant through the first pipe body (321) into the cooling pipe (231) and the coolant flowing out of the cooling pipe (231) flows into the second pipe body (322).

2. The integrated heat dissipation and heating system for a square supercapacitor as described in claim 1, characterized in that: There is a gap between two adjacent square supercapacitors (100) for accommodating the integrated thermal management unit (200), the number of which is the same as the number of gaps in the battery pack and is arranged in a one-to-one correspondence.

3. The integrated heat dissipation and heating system for a square supercapacitor as described in claim 1, characterized in that: The cooling pipes (231) of the cooling pipe group (230) are divided into at least one group, and the group of cooling pipes (231) are arranged concentrically from the inside to the outside in a coil structure.

4. The integrated heat dissipation and heating system for a square supercapacitor as described in claim 3, characterized in that: The two cooling pipe groups (230) of the integrated thermal management unit (200) are centrally symmetrically distributed, and the circulating water pumps (310) corresponding to the two circulating channels (300) are located on the other two sides of the battery pack.

Images