Cooling structure of variable flow cabin
By incorporating a cooling structure with radiators and fans in the converter compartment, combined with fin and diversion valve control, the problem of high temperature inside the compartment caused by PCS temperature rise was solved, achieving effective heat dissipation of the high-voltage wiring harness and temperature control of the battery compartment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-03-24
AI Technical Summary
In existing technologies, when the PCS temperature is high, the ambient temperature inside the battery compartment of the AC/DC integrated energy storage battery system increases, affecting the temperature control effect of the battery compartment and failing to effectively dissipate heat, especially the heat dissipation requirements of the high-voltage wiring harness are not met.
Design a variable flow chamber cooling structure, including a radiator and a fan. The radiator is connected to a coolant pipeline on one side, and the fan blows out cold air to cool the high-voltage wiring harness. Combined with a multi-layer fin structure and a flow divider valve to control the coolant flow rate, uniform cooling is ensured.
It achieves effective control of the internal ambient temperature of the PCS compartment and heat dissipation of the high-voltage wiring harness, improves the temperature control effect of the battery compartment, and meets the heat dissipation requirements of the system.
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Figure CN224037670U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of battery converter cooling, in particular to a converter cabin cooling structure. BACKGROUND
[0002] With the increase of the integration degree of energy storage systems, AC-DC integrated energy storage container systems are applied and designed, but the thermal management system thereof brings greater challenges.
[0003] In the prior art, the AC-DC integrated energy storage battery system design scheme mainly considers the temperature control of the PCS (converter) body, and a refrigeration device is arranged inside or outside the PCS to separately control and process the temperature of the PCS.
[0004] However, the PCS releases a large amount of heat to the environment in a high temperature condition, resulting in a high temperature of the cabin environment, which affects the temperature of the battery cabin and causes poor temperature control of the battery cabin. In addition, in the case that the overall ring temperature of the PCS cabin is high, the heat dissipation demand of the high-voltage wire harness at the bottom of the PCS cannot be met. CONTENT OF THE INVENTION
[0005] In order to achieve the purpose of controlling the temperature of the PCS cabin internal environment and dissipating heat of the high-voltage wire harness, and to control the resistance of the liquid cooling system while meeting the system heat dissipation demand, the present application provides a converter cabin cooling structure, which comprises a plurality of converters and a heat exchange assembly, the heat exchange assembly is arranged on one side of the converter, the heat exchange assembly comprises a radiator and a fan, one end of the radiator is connected with a first water inlet pipe, the first water inlet pipe is provided with a cooling liquid to cool the radiator, the air inlet of the fan is connected with the radiator, and a high-voltage wire harness is arranged on one side of the air outlet of the fan, the fan blows out cold air to cool the high-voltage wire harness.
[0006] In this way, in actual work, the high-voltage wire harness is arranged below the converter, and since the high-voltage wire harness generates a certain amount of heat when passing through the current in the whole energy storage system charging and discharging process, the radiator is arranged on one side of the high-voltage wire harness, which can cool and exchange heat with the converter on one hand, and can dissipate heat of the high-voltage wire harness on the other hand.
[0007] In addition, in the present application, the radiator forms a low-temperature environment by passing in cooling water, the side of the radiator away from the fan is provided with a plurality of stacked fins, the airflow caused by the rotation of the fan passes through the fins and the low-temperature area formed by the radiator to blow out air flow with a lower temperature, and the airflow passes through the surface of the high-voltage wire harness to cool and exchange heat with the high-voltage wire harness.
[0008] According to an embodiment provided by the present application, the distance between the fan and the high-voltage wire harness is h, and h satisfies h≤100mm.
[0009] The length of the high-voltage wire harness midpoint from the fan air outlet is h. Since the high-voltage wire harness is laid under the converter, in order to ensure that the farthest end of the high-voltage wire harness is also ensured to be within the coverage of the airflow, the length h should be set to a distance less than or equal to 100 mm, and the high-voltage wire harness also needs to maintain a distance from the fan to avoid uneven airflow sweeping.
[0010] According to an embodiment provided by the present application, the side surface of the radiator away from the fan is respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are arranged on both sides of the surface of the radiator.
[0011] In this way, the water inlet of the radiator is arranged at the lower end, the water outlet is arranged at the upper end, and the area between the water inlet and the water outlet is provided with fins. The cooling water flows into the water inlet and is fully cooled after passing through the fin area, and then flows out from the water outlet at the upper end. The hot air introduced from one end of the radiator by the fan passes through the pipe body filled with cooling water and the fins to reduce the air temperature, and then the cooling air is vertically introduced to the high-voltage wire harness.
[0012] According to an embodiment provided by the present application, the water inlet and the water outlet of the radiator are respectively connected with a first shunt valve and a second shunt valve through a pipeline.
[0013] In this way, in the embodiment provided by the present application, the first shunt valve and the second shunt valve are both three-way shunt valves, which are internally provided with a variable-diameter structure to control the flow of cooling water entering the radiator. Further, the flow resistance of the entire heat dissipation system is controlled as much as possible to avoid the accumulation of cooling water in the pipeline or the lack of power to successfully pump the cooling water into the pipeline in the radiator, based on meeting the heat dissipation flow of the radiator.
[0014] According to an embodiment provided by the present application, the first shunt valve, the water inlet, the water outlet, and the second shunt valve are sequentially connected by a pipeline to form a main pipeline, and the first shunt valve is further connected with the second shunt valve to form a branch bypass.
[0015] The lower end of the first shunt valve is provided with a pipeline connected with the water inlet, and the front and rear ends of the first shunt valve are respectively connected with a first water inlet pipe and a second shunt valve. The bypass formed by the connection of the first shunt valve and the second shunt valve does not need to participate in the heat exchange of the radiator, and the cooling water participating in the heat exchange is discharged from the rear end of the second shunt valve and collected with the cooling liquid not participating in the heat exchange to flow into the next component, thereby achieving temperature control of the converter and temperature control of the high-voltage wire harness.
[0016] According to an embodiment provided by the present application, the output end of the second shunt valve is connected with a third shunt valve, and the third shunt valve includes at least two flow pipes, each of which is connected with a converter.
[0017] In this way, the two flow pipes arranged on the side of the third shunt valve are connected with one variable flow device respectively, the cooling liquid that has participated in heat exchange and the cooling liquid that has not participated in heat exchange flow in the flow pipes, so that the cooling liquid in the flow pipes can further cool the variable flow device, and the cooling liquid that has participated in heat exchange can be cooled again after the confluence, so that the cooling effect of the variable flow device is ensured.
[0018] According to an embodiment provided by the application, one end of the first shunt valve is connected with the first water inlet pipe, a ball valve is arranged at the starting end of the first water inlet pipe, and the first water inlet pipe comprises at least two pipelines, one of which is connected with the first shunt valve, and the other of which is connected with other variable flow devices.
[0019] In this way, the end of the first water inlet pipe is connected with other variable flow device groups, in the embodiment provided by the application, a plurality of variable flow device groups and a plurality of battery systems form an energy storage system, at least two variable flow devices are arranged in each variable flow device group, and the specific number is not limited herein, and a passage for placing the first water inlet pipe is arranged below the variable flow device group, and one pipeline in the passage is connected with other variable flow device groups to form a water flow passage.
[0020] According to an embodiment provided by the application, a first water return pipe is arranged on the side of the first water inlet pipe, the input end of the first water return pipe is connected with a variable flow device, and the output end of the first water return pipe is connected with an external water supply source.
[0021] In this way, the other end of each variable flow device is also provided with a flow pipe, the flow pipe is used for flowing out the cooling liquid after heat dissipation, the output end of the flow pipe is connected with the first water return pipe, the output end of the first water return pipe is also provided with a ball valve, and a complete heat dissipation and cooling pipeline is formed.
[0022] According to an embodiment provided by the application, a partition plate is arranged on one side of the variable flow device, and part of the first water inlet pipe and the first water return pipe is arranged in the partition plate.
[0023] According to an embodiment provided by the application, a plurality of battery systems are stacked above the variable flow device, and the variable flow device controls the charging and discharging of the battery systems.
[0024] In this way, a plurality of plug-in connectors for connecting electrical appliances are further arranged in the partition plate, the first water inlet pipe and the first water return pipe can be effectively protected by arranging the partition plate, and the partition plate is arranged in the whole variable flow device module, so that the occupied space is fully and effectively utilized.
[0025] The application provides a variable current cabin cooling structure, comprising a plurality of variable current converters and a heat exchange assembly, the heat exchange assembly is arranged on one side of the variable current converter, the heat exchange assembly comprises a radiator and a fan, one end of the radiator is connected with a first water inlet pipe, the first water inlet pipe is provided with a cooling liquid to cool the radiator, an air inlet of the fan is connected with the radiator, a high-voltage wire harness is arranged on one side of an air outlet of the fan, and the fan blows out cold air to cool the high-voltage wire harness. In actual work, the high-voltage wire harness is arranged below the variable current converter, and since the high-voltage wire harness generates a certain amount of heat when passing through current in the whole energy storage system charging and discharging process, the radiator is arranged on one side of the high-voltage wire harness, and the radiator can cool and exchange heat for the variable current converter on one hand, and the radiator and the fan can cool the high-voltage wire harness on the other hand. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.
[0027] Figure 1 The structural schematic diagram of the energy storage battery system provided by the embodiments of the present application;
[0028] Figure 2 The structural schematic diagram of the inside of the variable current cabin provided by the embodiments of the present application;
[0029] Figure 3 The structural schematic diagram of the radiator cooling circulation pipeline provided by the embodiments of the present application.
[0030] Explanation of reference signs:
[0031] 100-variable current converter; 200-heat exchange assembly; 210-radiator; 220-fan; 230-first water inlet pipe; 231-first water return pipe; 241-first shunt valve; 242-second shunt valve; 243-third shunt valve; 300-high-voltage wire harness; 400-battery system; 500-separator.
[0032] Through the above drawings, the specific embodiments of the present application have been shown, and more detailed description will be given hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0033] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.
[0034] First of all, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.
[0035] Secondly, it should be noted that in the description of the present application, the terms "front", "back", "left", "right", "up", "down", "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0036] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0037] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0038] With the increase of the integration degree of the energy storage system, the AC-DC integrated energy storage container system is applied and designed, but it brings greater challenges to the thermal management system thereof.
[0039] In the prior art, the AC-DC integrated energy storage battery system design scheme mainly considers the temperature control of the PCS (converter) body, and separately controls and processes the PCS by setting a refrigeration device inside or outside the PCS.
[0040] But the PCS will release a large amount of heat to the environment at a higher temperature, resulting in a higher temperature of the cabin environment, which will affect the temperature of the battery cabin, resulting in poor temperature control of the battery cabin. In addition, in the case of a higher overall ring temperature of the PCS cabin, the heat dissipation requirement of the high-voltage wire harness at the bottom of the PCS cannot be met.
[0041] Figure 1 A structural schematic diagram of an energy storage battery system provided by an embodiment of the present application is shown in the figure. Figure 2 A structural schematic diagram of the inside of a converter cabin provided by an embodiment of the present application is shown in the figure. Figure 3 A structural schematic diagram of a radiator cooling circulation pipeline provided by an embodiment of the present application is shown in the figure.
[0042] As shown in Figure 1 , Figure 2 , Figure 3 A converter cabin cooling structure, including a plurality of converters 100 and a heat exchange assembly 200, the heat exchange assembly 200 is arranged on one side of the converter 100, the heat exchange assembly 200 includes a radiator 210 and a fan 220, one end of the radiator 210 is connected with a first water inlet pipe 230, the first water inlet pipe 230 is passed through with a cooling liquid to cool the radiator 210, the air inlet of the fan 220 is connected with the radiator 210, a high-voltage wire harness 300 is arranged on one side of the air outlet of the fan 220, and the fan 220 blows out cold air to cool the high-voltage wire harness 300.
[0043] It should be noted that in actual work, the high-voltage wire harness 300 is arranged below the converter 100, and since the high-voltage wire harness 300 will generate a certain amount of heat when passing through the current during the charging and discharging process of the entire energy storage system, the radiator 210 is arranged on one side of the high-voltage wire harness 300, which can cool and exchange heat with the converter 100 on one hand, and the radiator 210 can also realize heat dissipation of the high-voltage wire harness 300 in cooperation with the fan 220.
[0044] In addition, in the present application, the radiator 210 forms a low-temperature environment inside by passing in cooling water, and the side of the radiator 210 opposite to the fan 220 is provided with a plurality of stacked fins, the airflow caused by the rotation of the fan 220 passes through the fins and the low-temperature area formed by the radiator 210 to blow out air with a lower temperature, and the airflow passes through the surface of the high-voltage wire harness 300 to realize heat exchange and cooling of the high-voltage wire harness 300.
[0045] According to an embodiment provided by the present application, the distance between the midpoint of the fan 220 and the high-voltage wire harness 300 is h, and h≤100mm is satisfied.
[0046] It should be noted that the length of the high-voltage wire harness 300 from the midpoint to the air outlet of the fan 220 is h, since the high-voltage wire harness 300 is laid under the converter 100, in order to ensure that the farthest end of the high-voltage wire harness 300 is also ensured to be within the coverage of the airflow, the length h should be set to a distance less than or equal to 100 mm, and the high-voltage wire harness 300 also needs to maintain a distance from the fan 220 to avoid uneven airflow sweeping.
[0047] According to an embodiment provided by the present application, the side surface of the heat sink 210 away from the fan 220 is respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are arranged on both sides of the surface of the heat sink 210.
[0048] It should be noted that the water inlet of the heat sink 210 is arranged at the lower end, the water outlet is arranged at the upper end, and fins are arranged between the water inlet and the water outlet. The cooling water flows into the water inlet and is fully cooled by the fins before flowing out of the water outlet at the upper end.
[0049] It is worth mentioning that the fan 220 introduces hot air from one end of the heat sink 210, and the hot air is cooled by the pipe filled with cooling water and the fins to reduce the temperature of the cooling air, and then the cooling air is vertically introduced to the high-voltage wire harness 300.
[0050] According to an embodiment provided by the present application, the water inlet and the water outlet of the heat sink 210 are respectively connected with a first shunt valve 241 and a second shunt valve 242 through a pipeline.
[0051] It should be noted that in the embodiments provided by the present application, the first shunt valve 241 and the second shunt valve 242 are both three-way shunt valves, which are internally provided with a variable-diameter structure to control the flow of cooling water entering the heat sink 210. Further, on the basis of meeting the heat dissipation flow of the heat sink 210, the flow resistance of the entire heat dissipation system is controlled as much as possible to avoid accumulation of cooling water in the pipeline or insufficient power to successfully pump the cooling water into the pipeline of the heat sink 210.
[0052] According to an embodiment provided by the present application, the first shunt valve 241, the water inlet, the water outlet and the second shunt valve 242 are connected in sequence by a pipeline to form a main pipeline, and the first shunt valve 241 is also connected with the second shunt valve 242 to form a branch bypass.
[0053] It should be noted that the lower end of the first shunt valve 241 is provided with a pipeline connected with the water inlet, and the front and rear ends of the first shunt valve 241 are connected with the first water inlet pipe 230 and the second shunt valve 242 respectively, and the bypass formed by the connection of the first shunt valve 241 and the second shunt valve 242 does not need to participate in the heat exchange of the radiator 210, and the cooling water participating in the heat exchange is discharged from the rear end of the second shunt valve 242 and flows into the next component together with the cooling water not participating in the heat exchange, thereby realizing the temperature control of the inverter 100 and the temperature control of the high-voltage wire harness 300.
[0054] According to an embodiment provided by the application, the output end of the second shunt valve 242 is connected with a third shunt valve 243, and the third shunt valve 243 includes at least two flow pipes, and each flow pipe is connected with an inverter 100.
[0055] It should be noted that the two flow pipes provided on the side of the third shunt valve 243 are each connected with an inverter 100, and the cooling water participating in the heat exchange and the cooling water not participating in the heat exchange flow in the flow pipes, so that the cooling water in the flow pipes can further cool the inverter 100, and the cooling water participating in the heat exchange can be cooled again after the confluence, thereby ensuring the cooling effect of the inverter 100.
[0056] According to an embodiment provided by the application, one end of the first shunt valve 241 is connected with the first water inlet pipe 230, the starting end of the first water inlet pipe 230 is connected with a ball valve, and the first water inlet pipe 230 includes at least two pipelines, one of which is connected with the first shunt valve 241, and the other of which is connected with other inverters 100.
[0057] It should be noted that the end of the first water inlet pipe 230 is connected with other inverter groups, and in the embodiment provided by the application, a plurality of inverter groups and a plurality of battery systems 400 form an energy storage system, and at least two inverters 100 are arranged in each inverter group, and the specific number is not limited herein, and a passage for placing the first water inlet pipe 230 is arranged below the inverter group, and one pipeline in the passage is connected with other inverter groups to form a water flow path.
[0058] According to an embodiment provided by the application, a first water return pipe 231 is arranged on the side of the first water inlet pipe 230, the input end of the first water return pipe 231 is connected with an inverter 100, and the output end of the first water return pipe 231 is connected with an external water supply source.
[0059] It should be noted that the other end of each converter 100 is also provided with a flow pipe for the cooling liquid after heat dissipation, and the output end of the flow pipe is connected with a first return water pipe 231, and the output end of the first return water pipe 231 is also provided with a ball valve, forming a complete heat dissipation and cooling pipe.
[0060] According to an embodiment provided by the application, one side of the converter 100 is provided with a partition plate 500, and the partition plate 500 is provided with a part of the pipe body of the first water inlet pipe 230 and the first return water pipe 231.
[0061] According to an embodiment provided by the application, a plurality of battery systems 400 are stacked above the converter 100, and the converter 100 controls the charging and discharging of the battery system 400.
[0062] It should be noted that the partition plate 500 is also provided with a plurality of plug-in connectors for connecting electrical appliances, and the partition plate 500 can effectively protect the first water inlet pipe 230 and the first return water pipe 231, and the entire converter module with the partition plate 500 fully utilizes the occupied space.
[0063] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.
[0064] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims that follow.
Claims
1. A variable flow chamber cooling structure, characterized in that, It includes multiple converters (100) and heat exchange components (200). The heat exchange components (200) are disposed on one side of the converters (100). The heat exchange components (200) include a radiator (210) and a fan (220). One end of the radiator (210) is connected to a first water inlet pipe (230), which is filled with cooling liquid. The air inlet of the fan (220) is connected to the heat sink (210), and a high-voltage wire harness (300) is provided on one side of the air outlet of the fan (220). The fan (220) blows out cold air to cool the high-voltage wire harness (300).
2. The variable flow chamber cooling structure according to claim 1, characterized in that, The distance between the fan (220) and the high-voltage wiring harness (300) is h, which satisfies h≤100mm.
3. The variable flow chamber cooling structure according to claim 1, characterized in that, The radiator (210) has an outlet and an inlet on the side of its surface away from the fan (220), and the inlet and outlet are located on both sides of the surface of the radiator (210).
4. The variable flow chamber cooling structure according to claim 2, characterized in that, The inlet and outlet of the radiator (210) are respectively connected to a first diversion valve (241) and a second diversion valve (242) via pipelines.
5. The variable flow chamber cooling structure according to claim 4, characterized in that, The first diversion valve (241), the inlet, the outlet and the second diversion valve (242) are connected in sequence through pipes to form the main pipeline. The first diversion valve (241) is also connected to the second diversion valve (242) to form a branch bypass.
6. The variable flow chamber cooling structure according to claim 4, characterized in that, The output end of the second diverter valve (242) is connected to a third diverter valve (243), which includes at least two flow pipes, each of which is connected to a converter (100).
7. The variable flow chamber cooling structure according to claim 4, characterized in that, One end of the first diverter valve (241) is connected to the first inlet pipe (230). The first inlet pipe (230) is connected to a ball valve at its starting end. The first inlet pipe (230) includes at least two pipes, one of which is connected to the first diverter valve (241) and the other is connected to other converters (100).
8. The variable flow chamber cooling structure according to claim 6, characterized in that, A first return water pipe (231) is provided on the side of the first inlet pipe (230). The input end of the first return water pipe (231) is connected to the converter (100), and the output end of the first return water pipe (231) is connected to an external water supply source.
9. A variable flow chamber cooling structure according to claim 6 or 7, characterized in that, A partition (500) is provided on one side of the converter (100), and a portion of the first inlet pipe (230) and the first return pipe (231) are provided inside the partition (500).
10. A variable flow chamber cooling structure according to claim 1, characterized in that, Multiple battery systems (400) are stacked on top of the inverter (100), and the inverter (100) controls the charging and discharging of the battery systems (400).