Cooling system and charging pile

Abstract

The embodiment of the utility model provides a cooling system, which is used for a charging system and is characterized by comprising a plurality of cooling branches connected in parallel, the cooling liquid supply module is connected with the plurality of cooling branches; the liquid quantity control module is arranged between the cooling liquid supply module and the plurality of cooling branches; and the multiple detection modules are used for detecting the states of the cooling liquid of the multiple cooling branches, the multiple detection modules are electrically connected with the liquid amount control module, and the liquid amount control module controls the flow of the cooling liquid entering the multiple cooling branches based on parameters detected by the detection modules. The liquid quantity control module is arranged to control the flow of the cooling liquid in the multiple cooling branches, and heat dissipation of each charging gun can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a cooling system and a charging pile. BACKGROUND

[0002] In recent years, new energy electric vehicles have developed rapidly, and the charging efficiency of new energy electric vehicles has been widely concerned. In the traditional technology, the charging mode of the charging pile is single-gun charging, and the charging efficiency of a single charging gun is low, and the waiting time of the user is long. Therefore, developing double-gun charging and setting two charging guns in the charging pile to supply power at the same time is the current trend.

[0003] During the charging process, the charging cable generates a large amount of heat, and the existing cooling system of the charging pile is designed for a single charging gun, which cannot meet the heat dissipation demand of double-gun charging, especially when the two charging guns work asynchronously. CONTENT OF THE INVENTION

[0004] The embodiment of the present application provides a cooling system to solve the problem that the existing cooling system of the charging pile in the related art is designed for a single charging gun and cannot meet the heat dissipation demand of double-gun charging.

[0005] To solve the above technical problems, the present application is implemented as follows:

[0006] The embodiment of the present application provides a cooling system for a charging system, comprising:

[0007] a plurality of cooling branches connected in parallel;

[0008] a cooling liquid supply module connected with the plurality of cooling branches;

[0009] a liquid quantity control module arranged between the cooling liquid supply module and the plurality of cooling branches;

[0010] a plurality of detection modules for detecting the cooling liquid state of the plurality of cooling branches, wherein the plurality of detection modules are electrically connected with the liquid quantity control module, and the liquid quantity control module controls the flow of the cooling liquid entering the plurality of cooling branches based on the cooling liquid state detected by the detection modules.

[0011] Optionally, the system further comprises a first connector connected between the liquid quantity control module and the cooling branch.

[0012] Optionally, the first connector comprises a plurality of first inlet ends and a plurality of first outlet ends.

[0013] The liquid quantity control module is in communication with the first inlet end.

[0014] The cooling branch is in communication with the first outlet end.

[0015] Optionally, at least part of the cooling branch comprises at least two sub-branches, which are in communication with the first outlet end.

[0016] Optionally, the liquid quantity control module is provided in plurality, and the plurality of liquid quantity control modules are connected with the plurality of cooling branches correspondingly.

[0017] Optionally, at least two of the first connector, the liquid quantity control module and the cooling liquid supply module are integrated.

[0018] Optionally, a first bottom plate is further provided, and at least two of the first connector, the liquid quantity control module and the cooling liquid supply module are mounted on the first bottom plate.

[0019] Optionally, the system further comprises a heat dissipation module, which is connected with at least one cooling branch to dissipate heat of the cooling liquid.

[0020] Optionally, the cooling branch comprises a second inlet end and a second outlet end, the second inlet end is in communication with the liquid quantity control module, and the second outlet end is connected with the heat dissipation module, and the heat dissipation module is connected with the cooling liquid supply module.

[0021] Optionally, the system further comprises a second connector, one end of the second connector is connected with the cooling branch, and the other end of the second connector is connected with the heat dissipation module.

[0022] Optionally, the second connector comprises a plurality of third inlet ends and third outlet ends, the cooling branch is in communication with the third inlet ends, and the heat dissipation module is in communication with the third outlet ends.

[0023] Optionally, at least part of the cooling branch comprises at least two sub-branches, which are in communication with the third inlet ends.

[0024] Optionally, the detection module comprises a first temperature sensor, which is used to detect the temperature of the cooling liquid in the cooling branch.

[0025] And / or, the detection module further comprises a flow sensor, which is used to detect the flow of the cooling liquid in the cooling branch.

[0026] The detection module further comprises a pressure sensor, which is used to detect the pressure of the cooling liquid in the cooling branch.

[0027] Optionally, the detection module is arranged on the second connector.

[0028] Optionally, a second bottom plate is further included, and the second connector and the heat dissipation module are arranged on the second bottom plate.

[0029] Optionally, the system further includes a multi-way valve, which is in communication with the output end of the cooling liquid supply module and the plurality of liquid quantity control modules.

[0030] In a second aspect, the embodiments of the present application further disclose a charging pile, which comprises any of the cooling systems disclosed in the first aspect.

[0031] Optionally, the charging pile comprises a plurality of charging guns.

[0032] In the embodiments of the present application, the charging guns and the cooling branches are in one-to-one correspondence, the input end of each cooling branch is in communication with the liquid quantity control module, the opening and closing of the cooling branch of each charging gun can be controlled individually, the heat dissipation of each charging gun can be realized respectively, the flow of the cooling liquid in the plurality of cooling branches can be controlled by controlling the power of the liquid quantity control module, the heat dissipation effect of each cooling branch is adjusted, the heat generation and heat dissipation of the charging gun reach a dynamic balance, and energy waste is reduced.

[0033] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 FIG. 1 shows a schematic diagram of a cooling system provided by an embodiment of the present application;

[0035] Figure 2 FIG. 2 shows a schematic diagram of a cooling system with sub-branches provided by an embodiment of the present application;

[0036] Figure 3 FIG. 3 shows a schematic diagram of a first connector provided by an embodiment of the present application;

[0037] Figure 4 FIG. 4 shows a schematic diagram of a second connector provided by an embodiment of the present application;

[0038] Figure 5 FIG. 5 shows a schematic diagram of a first bottom plate and a second bottom plate provided by an embodiment of the present application.

[0039] REFERENCE SIGNS:

[0040] 1: cooling liquid supply module; 101: fourth outlet end; 102: liquid storage pot; 103: liquid storage fitting; 1031: liquid level switch; 1032: exhaust valve; 1033: liquid discharge valve; 1034: second temperature sensor; 2: heat dissipation module; 201: heat exchange unit; 202: fan cooling unit; 203: second liquid discharge valve; 3: liquid volume control module; 4: cooling branch; 401: second inlet end; 402: second outlet end; 5: first connector; 501: first inlet end; 502: first outlet end; 6: second connector; 601: first inlet end; 602: first outlet end; 7: detection module; 701: first temperature sensor; 702: flow sensor; 703: pressure sensor; 8: multi-way valve; 9: filter; 10: charging gun; 100: first bottom plate; 200: second bottom plate. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described 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 skilled in the art without creative work fall within the scope of protection of the present application.

[0042] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0043] In the related art, the charging pile has two or more charging guns, each of which has at least one cooling branch surrounding the charging cable, the inlet of the cooling branch is in communication with the cooling liquid supply module, and the outlet is in communication with the heat dissipation module. The cooling liquid flows out of the cooling liquid supply module, is pumped into each cooling branch, is in full contact with the charging cable of the charging gun, carries away the heat generated by the charging cable, then enters the heat dissipation module to release the heat to the outside, and the cooled cooling liquid flows out of the heat dissipation module and returns to the cooling liquid supply module. The cooling liquid circulates in the cooling system to ensure that the working temperature of the charging gun is within the normal range. The multiple cooling branches of the multiple charging guns share the same set of cooling liquid supply module and heat dissipation module to simplify the structure inside the charging pile.

[0044] In a specific application, the charging pile with multiple charging guns can supply power to one or more electric vehicles at the same time. Currently, some vehicle models on the market have a double-gun supercharging function, which can charge an electric vehicle with two charging guns at the same time. The multiple charging guns on one charging pile are often in different working states, and some charging guns are working and some charging guns are stopped. At this time, only the working charging guns need to be cooled, and full opening and full closing will cause waste, so it is necessary to individually control the opening and closing of the cooling branch of each charging gun.

[0045] Further, even if all charging guns are in working state, due to different charging components of different vehicle models, the power and heat generated by each charging gun are different. The more heat generated, the greater the flow rate of the cooling branch needs to be to improve the cooling effect. The less heat generated, the smaller the flow of the cooling branch can be.

[0046] Based on the above problems, the utility model embodiment discloses a cooling system, which can realize separate heat dissipation of each charging gun 10 and accurately control the heat dissipation effect in combination with the power and heat dissipation of the charging gun 10. The cooling system of the present application will be described in detail below with reference to the accompanying drawings.

[0047] As shown in Figures 1 to 2 The present application provides a cooling system for a charging system, comprising: a plurality of cooling branches 4 connected in parallel; a cooling liquid supply module 1 connected with the plurality of cooling branches 4; a liquid quantity control module 3 arranged between the cooling liquid supply module 1 and the plurality of cooling branches 4; a plurality of detection modules 7 for detecting the cooling liquid state of the plurality of cooling branches 4, the plurality of detection modules 7 being electrically connected with the liquid quantity control module 3, and the liquid quantity control module 3 controlling the flow of the cooling liquid entering the plurality of cooling branches 4 based on the cooling liquid state detected by the detection module 7.

[0048] In the embodiment of the present application, the liquid quantity control module 3 and the detection module 7 electrically connected with the liquid quantity control module 3 are added between the cooling liquid supply module 1 and the cooling branch 4. The detection module 7 is used to detect the cooling liquid state in each cooling branch 4 and feed back the cooling liquid state parameter to the liquid quantity control module 3. The liquid quantity control module 3 controls the circulation of the cooling liquid in each cooling branch 4 in real time based on the received cooling liquid state parameter, cools the working charging gun 10, and ensures that the charging gun 10 can work normally.

[0049] The cooling liquid state includes parameters such as temperature, flow, flow rate and pressure of the cooling liquid, which can reflect whether the cooling system is in a normal working state and whether the heat dissipation capacity meets the requirements. It should be noted that in the present embodiment, the balance between the heat dissipation of the cooling system and the heat release of the charging gun 10 is mainly reflected according to the parameter of the cooling liquid temperature, and then the flow of the cooling liquid in each cooling branch 4 is controlled to adjust the heat dissipation of the cooling system to the charging gun 10. Therefore, the detection module 7 can at least detect the temperature of the cooling liquid in the cooling branch 4.

[0050] The detection module 7 can detect the temperature of the cooling liquid in the corresponding cooling branch 4 in real time and feed back the temperature data to the liquid quantity control module 3. According to the cooling liquid temperature data fed back by the detection module 7, the liquid quantity control module 3 can determine whether the heat dissipation capacity of the cooling branch 4 meets the requirements of the normal working of the charging gun 10, so as to control the flow of the cooling liquid flowing through the charging gun 10 connected thereto, and to separately dissipate heat for each charging gun 10. In the case that at least two charging guns 10 are provided in the charging pile, when some charging guns 10 start to charge, the corresponding liquid quantity control module 3 is turned on to control the cooling liquid in the cooling liquid supply device to flow into the corresponding cooling branch 4, and the cooling liquid flows through the charging cable of the charging gun 10 and then flows out after absorbing the heat generated by the power-on of the charging cable. According to the power of the charging gun 10 and the temperature of the cooling liquid in the cooling branch 4 flowing through the charging gun 10, the motor speed of the liquid quantity control module 3 is changed correspondingly to adjust the flow of the cooling liquid in the cooling branch 4, so that the heat dissipation and heat release of the charging gun 10 reach a dynamic balance and are maintained within a normal temperature range. The separate operation reduces the waste of energy, and the control of the flow makes the heat better dissipated when only one charging gun 10 works.

[0051] In specific applications, in order to achieve separate heat dissipation for each charging gun 10, each charging gun 10 corresponds to at least one cooling branch 4 and one liquid quantity control module 3, the cooling branch 4 and the liquid quantity control module 3 are connected correspondingly, and the detection module 7 is provided correspondingly on each cooling branch 4, the detection module 7 is electrically connected with the liquid quantity control module 3 to transmit the temperature and other cooling liquid state parameters to the liquid quantity control module 3, and the liquid quantity control module 3 controls the start and stop of the cooling liquid circulation in each cooling branch 4 and the flow and flow rate of the cooling liquid when flowing. Each charging gun 10 is provided with at least one set of independent cooling liquid circulation control system, which can achieve separate heat dissipation for each charging gun 10 and reduce the energy waste caused by the idling of the cooling system when the charging guns 10 work asynchronously.

[0052] In some optional embodiments, the system further comprises a first connector 5 connected between the liquid quantity control module 3 and the cooling branch 4.

[0053] Optionally, the first connector 5 comprises a plurality of first inlet ends 501 and a plurality of first outlet ends 502; the liquid quantity control module 3 is in communication with the first inlet ends 501; the cooling branch 4 is in communication with the first outlet ends 502.

[0054] In the embodiment, the first connector 5 is arranged between the cooling branch 4 and the liquid quantity control module 3; one end of the first connector 5 connected with the liquid quantity control module 3 is provided with a plurality of first inlet ends 501, the number of the first inlet ends 501 is at least equal to the number of the liquid quantity control modules 3, and one liquid quantity control module 3 is connected with one first inlet end 501; one end of the first connector 5 connected with the cooling branch 4 is provided with a plurality of first outlet ends 502, the number of the first outlet ends 502 is at least equal to the number of the cooling branches 4, and one first outlet end 502 is connected with one cooling branch 4.

[0055] As shown in Figure 2 the first connector 5, one first inlet end 501 is connected with at least one first outlet end 502 to form a channel for the flow of the cooling liquid, which can be in the form of a pipe or a hollow cavity composed of a partition, so that the cooling liquid flowing out of the liquid quantity control module 3 enters the corresponding cooling branch 4 through the channel. Moreover, the channel formed by the connection of the first inlet end 501 and the first outlet end 502 is isolated from other first inlet ends 501 and first outlet ends 502 by a pipe wall or a partition, so that each cooling branch 4 corresponds to a separate pipe or cavity, and different cooling branches 4 are independent of each other. The number of the first inlet ends 501 and the first outlet ends 502 of the cooling liquid inlet connector can be greater than the number of the liquid quantity control modules 3 and the cooling branches 4, so as to have better versatility in the case that the number of the cooling branches 4 of the charging gun 10 is different. The first inlet ends 501 and the first outlet ends 502 not connected with the liquid quantity control modules 3 and the cooling branches 4 are plugged to prevent liquid leakage.

[0056] The first connector 5 is arranged between the cooling branch 4 and the liquid quantity control module 3, and the connecting pipes of the plurality of cooling branches 4 and the plurality of liquid quantity control modules 3 are integrated in the first connector 5, which facilitates modular installation and management. In specific applications, the first connector 5 can be an integrated structure or a split structure composed of a plurality of first connectors 5 connected in parallel, so as to adapt to different use requirements.

[0057] In some optional embodiments, at least part of the cooling branch 4 comprises at least two sub-branches; the sub-branches are in communication with the first outlet ends 502.

[0058] As shown in Figure 2As shown, in the embodiment of the utility model, part cooling branch 4 includes multiple sub branches, that is, one charging gun 10 is surrounded by multiple cooling liquid circulation channels, which can increase the specific surface area of cooling branch 4 and charging gun 10, the cooling liquid in each sub branch is in full contact with the high-temperature environment in charging gun 10, the heat exchange efficiency is improved, and the specific heat capacity of the cooling liquid is maximized.

[0059] In an embodiment, each sub branch of cooling branch 4 converges at first connector 5 and second connector 6, and communicates with liquid quantity control module 3. The sub branches are directly connected to first outlet end 502 of first connector 5, the total number of each branch is greater than the number of liquid quantity control module 3, one branch is connected to one first outlet end 502, one liquid quantity control module 3 is connected to one first inlet end 501, and then one first inlet end 501 is connected to multiple first outlet ends 502 in the case of connecting sub branches. The cooling liquid flowing out of liquid quantity control module 3 enters first connector 5 from first inlet end 501, and then flows into multiple sub branches through multiple connected first outlet ends 502.

[0060] In some embodiments, each sub branch can also converge at the end of cooling branch 4, and then be connected to first outlet end 502 of first connector 5. In this case, first inlet end 501 and first outlet end 502 are still connected one by one.

[0061] In some optional embodiments, liquid quantity control module 3 has multiple, and multiple liquid quantity control modules 3 are connected to multiple cooling branches 4.

[0062] Each cooling branch 4 corresponding to each charging gun 100 can be one or more, and the corresponding liquid quantity control module 3 can also be one or more. Cooling branch 4 and liquid quantity control module 3 can be connected one by one, one cooling branch 4 is connected to one liquid quantity control module 3, detection module 7 on cooling branch 4 is also connected to liquid quantity control module 3 at the same time, more accurate control is realized, and each cooling branch 4 is controlled by one liquid quantity control module 3; it can be connected one to many, multiple cooling branches 4 correspond to one liquid quantity control module 3, so as to carry out grouping control; it can also be connected many to many, multiple cooling branches 4 correspond to multiple liquid quantity control modules 3, and more complex and various cooling liquid flow control schemes are provided.

[0063] In the case of meeting the requirement that each charging gun 10 has at least one independent cooling liquid circulation control system, the number of cooling branch 4 and liquid quantity control module 3 and the specific connection mode do not affect the realization of the separate heat dissipation of each charging gun 10, and the embodiment does not make further limitation.

[0064] In some optional embodiments, at least two of the first connector 5, the liquid quantity control module 3, and the cooling liquid supply module 1 are integrated.

[0065] The cooling liquid supply module 1, the liquid quantity control module 3, and the first connector 5 can constitute a relatively complete unit for inputting cooling liquid into the cooling branch 4. Therefore, the above-mentioned devices can be integrated on the same base plate, facilitating assembly, improving production efficiency, and facilitating modular management.

[0066] Optionally, a first base plate 100 is further included, and at least two of the first connector 5, the liquid quantity control module 3, and the cooling liquid supply module 1 are mounted on the first base plate 100.

[0067] The above-mentioned modules can be arranged side by side on the first base plate 100, including linear arrangement, matrix arrangement, and the like, which is simple to wire and facilitates heat dissipation. The modules can also be arranged in layers or stacked, which is suitable for limited space, saves horizontal space, and is suitable for high-density integration. Meanwhile, the base plate can be functionally partitioned, facilitating maintenance and upgrading, and modular management. The appropriate arrangement mode can be selected according to specific requirements to optimize system performance and reliability.

[0068] In some optional embodiments, the system further includes a heat dissipation module 2 connected with at least one cooling branch 4 to dissipate heat of the cooling liquid.

[0069] Optionally, the cooling branch 4 includes a second inlet end 401 and a second outlet end 402, the second inlet end 401 is in communication with the liquid quantity control module 3, and the second outlet end 402 is connected with the heat dissipation module 2, and the heat dissipation module 2 is connected with the cooling liquid supply module 1.

[0070] The inlet of the heat exchange unit 201 is connected with the second outlet end 402 of the cooling branch 4, and the outlet of the heat exchange unit 201 is connected with the cooling liquid supply module 1. In the case that at least two charging guns 10 are arranged in the charging pile, when some charging guns 10 start charging, the corresponding liquid quantity control module 3 is opened to control the cooling liquid in the cooling liquid supply device to flow into the second inlet end 401 of the corresponding cooling branch 4. The cooling liquid flows through the charging cable of the charging gun 10 along the cooling branch 4, absorbs heat generated by the charging cable in power-on state, and then flows out from the second outlet end 402 of the cooling branch 4 into the heat dissipation module 2, and then returns to the cooling liquid supply module 1 after being cooled in the heat dissipation module 2. The cooling liquid circulates in the cooling system according to the above-mentioned flow to cool the working charging gun 10.

[0071] Further, the heat dissipation module 2 in the embodiment of the utility model includes heat exchange unit 201 and fan cooling unit 202, heat exchange unit 201 is equipped with heat dissipation mesh protective cover, fan cooling unit 202 is equipped with fan protective cover. The heat exchange core in heat exchange unit 201 is arranged on the fan frame support on the one side of heat exchange core, and the fan in fan cooling unit 202 is arranged on the other side of the fan frame support, and the high-temperature cooling liquid flowing through the charging gun 10 is cooled in the air-cooled mode. When the power of heat dissipation module 2 needs to be adjusted, only the blade speed of the fan needs to be controlled, when the water temperature is low and the charging gun 10 does not heat seriously, the fan can operate at low power, saving energy; when the water temperature is high or there is a continuous temperature rising trend, the power is increased, so that the heat dissipation capacity of the cooling system and the heating capacity of the charging gun 10 reach dynamic balance.

[0072] In some optional embodiments, the system further comprises: a second connector 6; one end of the second connector 6 is connected to the cooling branch 4, and the other end of the second connector 6 is connected to the heat dissipation module 2.

[0073] Optionally, the second connector 6 comprises at least two third inlet ends 601 and one third outlet end 602; the at least two third inlet ends 601 are in communication with the one third outlet end 602; the second outlet end 402 of the at least two cooling branches 4 is in communication with the at least two third inlet ends 601 respectively; and the third outlet end 602 is in communication with the heat dissipation module 2.

[0074] In the embodiment, the second connector 6 is arranged between the cooling branch 4 and the heat dissipation module 2, one end of the second connector 6 connected to the liquid quantity control module 3 is provided with a plurality of third inlet ends 601, the number of the third inlet ends 601 is at least equal to the number of the cooling branches 4, and one third outlet end 602 is connected to one cooling branch 4. The cooling liquid in the plurality of cooling branches 4 enters the second connector 6 through the third inlet ends 601, is gathered at the third outlet end 602, and flows into the heat dissipation module 2 for temperature reduction treatment.

[0075] In some optional embodiments, in the case that the cooling branch 4 comprises a plurality of sub-branches, the number of the third inlet ends 601 is at least equal to the sum of the number of the sub-branches of each cooling branch 4; and one sub-branch of the cooling branch 4 is in communication with one third inlet end 601.

[0076] It can be understood that, in the case that the cooling branch 4 has a plurality of sub-branches, each sub-branch is gathered at the second outlet end 402 of the cooling branch 4 and is connected to the plurality of third inlet ends 601 of the second connector 6 respectively.

[0077] In some optional embodiments, the detection module 7 comprises a first temperature sensor 701 for detecting the temperature of the cooling liquid in the cooling branch 4; and / or, the detection module 7 comprises a flow sensor 702 for detecting the flow of the cooling liquid in the cooling branch 4; and / or, the detection module 7 comprises a pressure sensor 703 for detecting the pressure of the cooling liquid in the cooling branch 4.

[0078] In the present embodiment, the output end of the cooling branch 4 is provided with a first temperature sensor 701 for detecting the temperature of the cooling liquid flowing out of the charging gun 10. The cooling liquid flows around the charging cable of the charging gun 10 in the cooling branch 4, absorbs heat and then flows out, at which time the temperature of the heated cooling liquid can reflect the heating condition of the charging gun 10. The first temperature sensor 701 is correspondingly arranged at the second outlet end 402 of each cooling branch 4, so as to monitor the heating condition of each charging gun 10 respectively. In some embodiments, the first temperature sensor 701 can also be arranged at the input end of the cooling branch 4, and the water temperature data obtained at the input end and the output end can be compared to more accurately calculate the heat generation of each charging gun 10.

[0079] Each cooling branch 4 corresponding to each charging gun 10 is provided with at least one first temperature sensor 701, and is correspondingly connected to a liquid quantity control module 3, and the temperature data is transmitted to the liquid quantity control module 3. The above structure can realize the separate heat dissipation of the single charging gun 10. When only part of the charging guns 10 are in working state, only the liquid quantity control module 3 connected to the cooling branch 4 flowing through the charging gun 10 needs to be adjusted, and other branches are not involved.

[0080] Meanwhile, the water temperature is also an important standard for reflecting whether the heat dissipation capacity of the cooling system meets the demand. The cooling system in the present embodiment can dynamically adjust the heat dissipation capacity of the cooling branch 4 in each charging gun 10 according to the water temperature. The water temperature data detected by the first temperature sensor 701 is transmitted to the controller in real time, and the temperature data of each charging gun 10 detected by each first temperature sensor 701 is combined with the historical data, so as to correspondingly control the start and stop of the liquid quantity control module 3 and the heat dissipation module 2, and change the heat dissipation capacity by adjusting the power of the liquid quantity control module 3 and the heat dissipation module 2, so that the heat dissipation capacity of the cooling system is greater than the heat generation capacity of the charging gun 10, so as to ensure the normal work of the charging gun 10 and avoid the waste of the heat dissipation capacity caused by overflow.

[0081] The flow sensor 702 and the pressure sensor 703 can be arranged in the loop of the cooling system as required, respectively for detecting the flow and pressure of the cooling liquid in the cooling branch 4, and the detected data can directly reflect whether the liquid circulation in the cooling system is normal. When the flow and pressure are lower than the critical value, there may be a liquid leakage in the cooling system. When the flow and pressure are higher than the critical value, there may be a blockage problem. Generally, the fourth outlet end 101 of the cooling liquid supply module 1 is a position that needs to be monitored. The liquid pressure and flow at the fourth outlet end 101 directly affect the flow of the cooling liquid into the cooling branch 4. The flow sensor 702 and the pressure sensor 703 are generally arranged at the fourth outlet end 101 of the cooling liquid supply module 1.

[0082] The first temperature sensor 701, the pressure sensor 703, the flow sensor 702 and other sensors in the detection module 7 monitor the entire system in real time, protecting the safety of the entire system. In the event of an over-temperature or liquid leakage, blockage or other emergencies, the system can respond in time. When the water temperature exceeds 90℃ or the pressure exceeds the safety threshold, the charging gun 10 is stopped for protection to prevent accidents. When the pressure is lower than the critical value, it indicates that there is a liquid leakage problem in the system, and the system is also stopped and an alarm is sent to remind the staff to repair. For the convenience of line laying and unified management, the pressure sensor 703, the flow sensor 702 and the filter 9 can be arranged at the fourth outlet end 101 or at any position of the line without branches.

[0083] In some optional embodiments, in the case where one cooling branch 4 includes a plurality of sub-branches, the third inlet end 601 connected by the plurality of sub-branches is gathered to a junction end in the second connector 6, and the junction end is communicated with the third outlet end 602; the first temperature sensor 701 is arranged at the junction end.

[0084] As shown in the figure, in the case where the cooling branch 4 includes a plurality of sub-branches, the output end of each sub-branch is connected with the third inlet end 601 of the second connector 6, and the sub-branches belonging to the same cooling branch 4 are gathered in the second connector 6. The first temperature sensor 701 is arranged in the pipeline after the gathering to collect the water temperature data of each cooling branch 4. Then, each cooling branch 4 is gathered to the third outlet end 602 and flows into the heat dissipation module 2 from the third outlet end 602.

[0085] In some implementations, each sub-branch can also be gathered first to collect the water temperature data and then enter the second connector 6.

[0086] In some optional embodiments, a second bottom plate 200 is further included, and the second connector 6 and the heat dissipation module 2 are arranged on the second bottom plate 200.

[0087] The second connector 6 and the heat dissipation module 2 can constitute a relatively complete unit, and the cooling liquid flowing out of the charging gun 10 is collected at the second connector 6 and then enters the heat dissipation module 2 to be uniformly cooled, thereby completing a cycle. Therefore, the above equipment can be integrated on the same bottom plate, facilitating assembly, improving production efficiency, and facilitating modular management.

[0088] In the related art, most of the liquid cooling modules of the charging piles are integrated, but due to the small space of the charging pile body, for some small pile bodies, the integrated liquid cooling module occupies a relatively complete space and is inconvenient to place. In the embodiments of the present application, a split structure is adopted, a series of liquid supply equipment connected by the second inlet end 401 of the cooling branch 4 is integrated on the first bottom plate 100 through the frame support, including the cooling liquid inlet connector 5, the liquid quantity control module 3, the cooling liquid supply module 1 and the related equipment connected to the above modules; and the cooling liquid outlet connector 6 and the heat dissipation module 2 are integrated on the second bottom plate 200. The integrated manner of each module on the bottom plate can refer to the description in the foregoing embodiments, and a suitable arrangement manner such as side-by-side or stacking can be selected according to specific requirements. The first bottom plate 100 and the second bottom plate 200 can be flexibly arranged according to the space and structure in the charging pile. Specifically, the commonly used charging pile is usually a cuboid, and the space in the front-rear and left-right directions is relatively small, and the height space is relatively large, so the modules can be stacked according to the height of the charging pile. The first bottom plate 100 and the second bottom plate 200 are arranged on the side surface of the charging pile. The arrangement of the two separate bottom plates enables the two units to be arranged in the charging pile according to different actual requirements. The structure is more flexible, and different requirements can be met without modifying the frame structure.

[0089] Further, the outlet of the heat dissipation module 2 is connected with the pipeline through a 90-degree quick connector, and the other end of the pipeline is connected with the inlet of the cooling liquid supply module 1 through a 90-degree quick connector. This enables the pipeline connecting the heat dissipation module 2 and the cooling liquid supply module 1 to be disassembled at any time according to different application environments, so that the structure is more flexible.

[0090] In some optional embodiments, a multi-way valve 8 is further included; the multi-way valve 8 is connected with the output end of the cooling liquid supply module 1 and the two liquid quantity control modules 3 respectively.

[0091] When two charging guns 10 are arranged in the charging pile, the cooling branch 4 is two, and a multi-way valve 8 is arranged on the pipeline connecting the cooling liquid supply module 1 and the liquid quantity control module 3, so that the flowing cooling liquid is divided into the two liquid quantity control modules 3 corresponding to the two cooling branches 4. When the number of the charging guns 10 and the cooling branches 4 is more than two, the multi-way valve 8 is correspondingly increased in the pipeline connecting the cooling liquid supply module 1 and the liquid quantity control module 3.

[0092] In some optional embodiments, the system further comprises a filter 9, which is arranged at the fourth outlet end 101 of the cooling liquid supply module 1.

[0093] The fourth outlet end 101 of the cooling liquid supply module 1 is provided with the filter 9 through which all the liquid in the system flows, and the filter 9 arranged at this position can thoroughly filter all the liquid. During the operation of the cooling system, there are corrosion problems in various devices and pipeline lines, and the impurities released into the cooling liquid will be deposited for a long time to block the pipeline. The circulating pump in the liquid quantity control module 3 has high-speed rotating blades, which are most affected by impurities, so the filter 9 needs to be arranged before the position where the cooling liquid is branched into each liquid quantity control module 3, and the cooling liquid is filtered before entering the liquid quantity control module 3, so as to remove the impurities generated in the liquid cooling system during long-term operation, so as to ensure the normal operation of each component, maximize the working efficiency and maximize the service life.

[0094] In some optional embodiments, the detection module 7 further comprises a flow sensor 702.

[0095] Optionally, the detection module 7 further comprises a pressure sensor 703.

[0096] In some optional embodiments, the liquid quantity control module 3 comprises a pump.

[0097] In this embodiment, the liquid quantity control module 3 mainly controls the flow of the cooling liquid in the cooling branch 4 by changing the rotating speed of the pump.

[0098] In some optional embodiments, the cooling liquid supply module 1 comprises a liquid storage pot 102 and a liquid storage accessory 103; the liquid storage accessory 103 is connected with the liquid storage pot 102; the liquid storage accessory 103 comprises at least one of a liquid level switch 1031, an exhaust valve 1032, a liquid discharge valve 1033 and a second temperature sensor 1034.

[0099] The liquid inlet and the liquid outlet of the liquid storage pot 102 are arranged at the bottom of the liquid storage pot 102, and in addition, the liquid discharge valve 1033 is arranged at the bottom of the liquid storage pot 102, which can discharge the cooling liquid when it is necessary to replace the cooling liquid. The exhaust valve 1032 is arranged at the top of the liquid storage pot 102, which can exhaust when the cooling liquid in the liquid storage pot 102 needs to be exhausted due to high temperature. The liquid level switch 1031 is arranged at the top and the bottom of the liquid storage pot 102, which is used to detect the real-time liquid level of the liquid storage pot 102. The second temperature sensor 1034 is arranged at the bottom of the liquid storage pot 102, which is used to detect the temperature of the cooling liquid in the liquid storage pot 102.

[0100] The utility model embodiment further discloses a charging pile, comprising any one of the cooling systems disclosed in the above embodiments.

[0101] Optionally, the charging pile comprises a plurality of charging guns 10.

[0102] It should be noted that the various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between embodiments can be referred to each other.

[0103] Although the optional embodiments of the application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to include the optional embodiments and all changes and modifications falling within the scope of the embodiments of the application.

[0104] Finally, it should also be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between the entities. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the article or terminal device including the element.

[0105] The above describes the technical solutions provided by the application in detail. The principles and implementation modes of the application are described by applying specific examples in this paper. For those skilled in the art, the principles and implementation modes of the application will have changes in specific implementation modes and application scope. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A cooling system for a charging system, characterized by The system comprises: a plurality of cooling branches (4) connected in parallel; a cooling liquid supply module (1) connected with the plurality of cooling branches (4); a liquid volume control module (3) arranged between the cooling liquid supply module (1) and the plurality of cooling branches (4); a plurality of detection modules (7) for detecting the cooling liquid state of the plurality of cooling branches (4), the plurality of detection modules (7) being electrically connected with the liquid volume control module (3), and the liquid volume control module (3) controlling the flow of cooling liquid into the plurality of cooling branches (4) based on the cooling liquid state detected by the detection modules (7).

2. The cooling system of claim 1, wherein, The system further comprises a first connector (5) connected between the liquid volume control module (3) and the cooling branch (4).

3. The cooling system of claim 2, wherein, The first connector (5) comprises a first inlet end (501) and a plurality of first outlet ends (502); The liquid volume control module (3) is in communication with the first inlet end (501); The cooling branch (4) is in communication with the first outlet end (502).

4. The cooling system of claim 3, wherein, At least part of the cooling branch (4) comprises at least two sub-branches in communication with the first outlet end (502).

5. The cooling system of claim 1, wherein, There are a plurality of liquid volume control modules (3) corresponding to the plurality of cooling branches (4).

6. Cooling system according to any of claims 2-5, characterized in that At least two of the first connector (5), the liquid volume control module (3), and the cooling liquid supply module (1) are integrated.

7. The cooling system of claim 6, wherein, Further comprising a first bottom plate (100), and at least two of the first connector (5), the liquid volume control module (3), and the cooling liquid supply module (1) are mounted on the first bottom plate (100). The system further comprises a heat dissipation module (2) connected with at least one cooling branch (4) to dissipate heat from the cooling liquid.

8. The cooling system of claim 1, wherein, The cooling branch (4) comprises a second inlet end (401) in communication with the liquid volume control module (3) and a second outlet end (402) connected with the heat dissipation module (2), and the heat dissipation module (2) is connected with the cooling liquid supply module (1).

9. The cooling system of claim 8, wherein, The system further comprises a second connector (6) connected at one end with the cooling branch (4) and at the other end with the heat dissipation module (2).

10. The cooling system of claim 9, wherein, The second connector (6) comprises a plurality of third inlet ends (601) and third outlet ends (602); 11. The cooling system of claim 10, wherein, The cooling branch (4) is in communication with the third inlet end (601); The heat dissipation module (2) is in communication with the third outlet end (602). At least part of the cooling branch (4) comprises at least two sub-branches in communication with the third inlet end (601).

12. The cooling system of claim 11, wherein, The detection module (7) comprises a first temperature sensor (701) for detecting the temperature of the cooling liquid in the cooling branch (4); 13. The cooling system of claim 1, wherein, ​ And / or, the detection module (7) comprises a flow sensor (702) for detecting the flow of the cooling liquid in the cooling branch (4); And / or, the detection module (7) comprises a pressure sensor (703) for detecting the pressure of the cooling liquid in the cooling branch (4).

14. The cooling system of claim 10, wherein, The detection module (7) is arranged on the second connector (6).

15. Cooling system according to any of claims 10-12, characterized in that The system further comprises a second bottom plate (200), and the second connector (6) and the heat dissipation module (2) are arranged on the second bottom plate (200).

16. The cooling system of claim 5, wherein, The system further comprises a multi-way valve (8) which respectively communicates with the output end of the cooling liquid supply module (1) and a plurality of the liquid quantity control modules (3).

17. A charging station, characterized in that The cooling system comprises the cooling system according to any one of claims 1-16.

18. The charging station of claim 17, wherein, The charging pile comprises a plurality of charging guns (10).

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