Liquid cooling device and charging pile

Abstract

The utility model provides a liquid cooling device and a charging pile, the liquid cooling device comprises a liquid storage tank, a driving source, a battery module, a charging module and a heat dissipation assembly which are connected to form a closed cooling circulation loop, the liquid storage tank, the driving source, the battery module and the charging module are sequentially distributed, and the heat dissipation assembly is used for cooling a cooling medium flowing in the cooling circulation loop. The liquid storage tank, the driving source, the battery module, the charging module and the heat dissipation assembly are connected to form the closed cooling circulation loop, and the liquid storage tank, the driving source, the battery module and the charging module are sequentially distributed, so that the battery module and the charging module are located in the same cooling circulation loop; compared with the prior art that the battery module and the charging module are respectively connected into different cooling circulation loops, one liquid storage tank, one driving source, pipelines and the like are saved, so that the cost is reduced; moreover, the structure of the liquid cooling device can be simplified, and the space utilization rate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a thermal management technical field especially relates to a liquid cooling device and charging pile. BACKGROUND

[0002] At present, the charging pile will configure the battery module, thereby charging the electric vehicle through the battery module when the commercial power is off or the power is insufficient, therefore, the charging pile needs to cool the battery module and the charging module to guarantee the normal charging.

[0003] In the related art, the liquid cooling mode is used to manage the heat of the battery module and the charging module, and the cooling water carries away the heat generated by the battery module and the charging module during work. The cooling circulation loop of the battery module and the cooling circulation loop of the charging module are independent of each other, resulting in a bulky structure and high cost of the liquid cooling device. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem that the utility model provides a liquid cooling device and charging pile, and aims at solving the problem of a bulky structure and high cost of the liquid cooling device in the related art.

[0005] To solve the above technical problem, the utility model provides a liquid cooling device in the first aspect, which comprises a liquid storage tank, a driving source, a battery module, a charging module and a heat dissipation assembly connected to form a closed cooling circulation loop, the liquid storage tank, the driving source, the battery module and the charging module are sequentially distributed, the liquid storage tank is used for storing a cooling medium, the driving source is used for driving the cooling medium to flow in the cooling circulation loop, and the heat dissipation assembly is used for cooling the cooling medium flowing in the cooling circulation loop.

[0006] Optionally, the heat dissipation assembly comprises:

[0007] A first heat sink is connected to the driving source and the battery module respectively; and,

[0008] A second heat sink is connected to the charging module and the liquid storage tank respectively;

[0009] The heat dissipation assembly has a first working state, a second working state and a third working state, when the heat dissipation assembly is in the first working state, the first heat sink cools the cooling medium flowing in the cooling circulation loop; when the heat dissipation assembly is in the second working state, the second heat sink cools the cooling medium flowing in the cooling circulation loop; when the heat dissipation assembly is in the third working state, the first heat sink and the second heat sink both cool the cooling medium flowing in the cooling circulation loop.

[0010] Optionally, the first heat sink is provided with first flow channels and second flow channels in parallel distribution, the first flow channels are communicated with the driving source and the battery module respectively;

[0011] The heat dissipation assembly further comprises a cold source having an inlet end and an outlet end, the second flow channels are communicated with the inlet end and the outlet end of the heat exchanger respectively.

[0012] Optionally, the liquid cooling device further comprises first switch valves communicated with the driving source and the battery module respectively, the first switch valves are arranged in parallel with the first heat sink.

[0013] Optionally, the heat dissipation assembly further comprises a ventilation device, the ventilation device is used for leading out the heat of the cooling medium flowing in the second heat sink.

[0014] Optionally, the liquid cooling device further comprises second switch valves communicated with the charging module and the liquid storage tank respectively, the second switch valves are arranged in parallel with the second heat sink.

[0015] Optionally, the liquid cooling device further comprises a heater, the heater is connected in series in the cooling circulation loop.

[0016] Optionally, the battery module comprises:

[0017] A first distributor is provided with a first liquid collecting end and a first liquid distributing end, the first liquid collecting end is communicated with the driving source;

[0018] A plurality of battery groups are communicated with the first liquid distributing end; and,

[0019] A second distributor is provided with a second liquid collecting end and a second liquid distributing end, a plurality of the battery groups are communicated with the second liquid distributing end, and the second liquid collecting end is communicated with the charging module.

[0020] Optionally, the charging module comprises:

[0021] A third distributor is provided with a third liquid collecting end and a third liquid distributing end, the third liquid collecting end is communicated with the battery module;

[0022] A plurality of charging groups are communicated with the third liquid distributing end; and,

[0023] A fourth distributor is provided with a fourth liquid collecting end and a fourth liquid distributing end, a plurality of the charging groups are communicated with the fourth liquid distributing end, and the fourth liquid collecting end is communicated with the liquid storage tank.

[0024] The utility model discloses a second aspect provides a kind of charging pile, including the liquid cooling device as any one of the above.

[0025] The utility model discloses a liquid cooling device and charging pile, and compared with the related art, has the beneficial effect that because the liquid storage tank, drive source, battery module, charging module and heat dissipation assembly are connected into the closed cooling circulation loop, and the liquid storage tank, drive source, battery module and charging module are sequentially distributed, make the battery module and charging module be in the same cooling circulation loop, compared with the battery module and charging module of related art are connected into different cooling circulation loop, save a liquid storage tank, a drive source and pipeline etc., thereby reduce the cost, and moreover, can also simplify the structure of liquid cooling device, improve space utilization. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the related art, the following will briefly introduce the drawings needed to be used in the embodiment or related art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0027] Figure 1 It is the principle schematic drawing of cooling circulation loop in an embodiment provided by the utility model,

[0028] Figure 2 It is the principle schematic drawing of cooling circulation loop in another embodiment provided by the utility model.

[0029] In the drawings, various reference signs represent: 1, liquid storage tank;2, drive source;3, battery module;31, first liquid distributor;32, battery pack;33, second liquid distributor;4, charging module;41, third liquid distributor;42, charging pack;43, fourth liquid distributor;5, first radiator;51, first flow channel;52, second flow channel;6, second radiator;7, cold source;8, ventilation equipment;9, first on-off valve;10, second on-off valve;20, heater. DETAILED DESCRIPTION

[0030] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model, based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model.

[0031] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0032] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0033] Embodiment:

[0034] The utility model embodiment provides a kind of charging pile, including liquid cooling device, liquid cooling device can adjust the working temperature of charging pile, to guarantee that charging pile normal work.

[0035] Please refer to Figure 1 And Figure 2 , liquid cooling device includes the liquid storage tank 1, drive source 2, battery module 3, charging module 4 and heat dissipation component connected into closed cooling circulation loop, liquid storage tank 1, drive source 2, battery module 3 and charging module 4 are distributed in turn, liquid storage tank 1 is used to store cooling medium, drive source 2 is used to drive cooling medium to flow in cooling circulation loop, and heat dissipation component is used to cool cooling medium flowing in cooling circulation loop.

[0036] Since liquid storage tank 1, drive source 2, battery module 3, charging module 4 and heat dissipation component are connected into closed cooling circulation loop, and liquid storage tank 1, drive source 2, battery module 3 and charging module 4 are distributed in turn, battery module 3 and charging module 4 are in the same cooling circulation loop, compared with battery module 3 and charging module 4 in the related art are respectively connected into different cooling circulation loop, save one liquid storage tank 1, one drive source 2 and pipeline etc., to reduce cost;Moreover, the structure of liquid cooling device can also be simplified, and space utilization is improved.

[0037] The charging pile has the characteristics of storage and charging integration. When the power supply is normal and in the valley, the power for charging the electric vehicle is derived from the municipal power; when the power supply is interrupted or insufficient, the power for charging the electric vehicle is derived from the battery module 3; when the power supply is normal and in the peak, the power for charging the electric vehicle is preferably derived from the battery module 3.

[0038] In the cooling circulation loop, the cooling medium first flows through the battery module 3 and then flows into the charging module 4, which can fully utilize the characteristic that the working temperature of the charging module 4 is higher than that of the battery module 3, maximize the use of natural cooling, reduce the operation frequency of the heat dissipation assembly, and the proportion of the heat dissipation amount of the heat dissipation assembly in the total heat dissipation amount, thereby reducing the energy consumption.

[0039] It should be noted that the optimal working temperature of the battery module 3 is generally between 20℃-35℃, and the temperature of the cooling medium flowing into the battery module 3 is about 20℃; wherein, when the temperature of the battery cell reaches 40℃ or above, it will affect the service life of the battery module 3. The working temperature range of the charging module 4 is wider, and the working temperature can be 40℃ or even 50℃, so the temperature of the cooling medium flowing into the charging module 4 can be about 35℃ or even higher. Therefore, by connecting the battery module 3 and the charging module 4 in series and making the cooling medium flow through the battery module 3 first and then flow into the charging module 4, the battery module 3 and the charging module 4 can be ensured to be in the optimal working state.

[0040] Please refer to Figure 1 and Figure 2 , the heat dissipation assembly includes a first heat sink 5 and a second heat sink 6, the first heat sink 5 is respectively connected to the driving source 2 and the battery module 3, and the first heat sink 5 is used to cool the cooling medium flowing to the battery module 3; the second heat sink 6 is respectively connected to the charging module 4 and the liquid storage tank 1, and the second heat sink 6 is used to cool the cooling medium flowing out of the charging module 4. Among them, the first heat sink 5 and the second heat sink 6 can adopt heat exchange or heat transfer to dissipate heat.

[0041] The heat dissipation assembly has a first working state, a second working state and a third working state, and the heat dissipation assembly has different heat management modes when it is in different working states, thereby reducing the energy consumption. Among them, when the heat dissipation assembly is in the first working state, the first heat sink 5 cools the cooling medium flowing in the cooling circulation loop; when the heat dissipation assembly is in the second working state, the second heat sink 6 cools the cooling medium flowing in the cooling circulation loop; when the heat dissipation assembly is in the third working state, the first heat sink 5 and the second heat sink 6 both cool the cooling medium flowing in the cooling circulation loop.

[0042] It should be noted that when the ambient temperature is low, the cooling medium can be naturally cooled, that is, the heat dissipation assembly can adopt a heat exchange heat management mode; when the ambient temperature is high, the cooling medium needs to be cooled by a cold source, that is, the heat dissipation assembly adopts a heat exchange heat management mode.

[0043] Referring to Figure 1 and Figure 2 , the first radiator 5 is provided with a first flow channel 51 and a second flow channel 52 in parallel, the first flow channel 51 is respectively connected to the driving source 2 and the battery module 3; the heat dissipation assembly further comprises a cold source 7 with an inlet end and an outlet end, the second flow channel 52 is respectively connected to the inlet end and the outlet end of the heat exchanger, the heat of the cooling medium flowing in the first flow channel 51 is conducted to the cooling medium flowing in the second flow channel 52 in a heat conduction manner, so that the first radiator 5 and the cold source 7 realize cooling by heat exchange. Among them, the first radiator 5 can be a plate heat exchanger, multiple first flow channels 51 and multiple second flow channels 52 can be arranged in parallel inside the plate heat exchanger, the first flow channel 51 and the second flow channel 52 can be enclosed by stainless steel sheets or other metal sheets, the flow channels on both sides of the first flow channel 51 are the second flow channels 52, and vice versa, the first flow channels 51 and the second flow channels 52 are alternately and repeatedly stacked; the cold source 7 can be a water chiller.

[0044] It should be noted that in the case of extremely low ambient temperature, for example, below zero, in order to heat the battery module 3, the temperature of the cooling medium flowing in the second flow channel 52 can be higher than that of the cooling medium flowing in the first flow channel 51, that is, the cold source 7 can heat the cooling medium flowing in the first flow channel 51, so that the temperature of the cooling medium flowing in the first flow channel 51 is above zero, avoiding the influence of the battery module 3 due to charging at low temperature on the service life.

[0045] It should be understood that the battery module 3 cannot be normally charged at low temperature, and needs to be heated to above zero, or even higher temperature, to start charging the battery module 3, otherwise the service life of the battery module 3 will be greatly reduced. In addition, when the ambient temperature is lower than the freezing point of the cooling medium, heating the cooling medium flowing in the first flow channel 51 can avoid the influence of the cooling medium due to too low temperature on the flow rate.

[0046] Referring to Figure 2 , in some embodiments, the liquid cooling device further comprises a first switch valve 9 respectively connected to the driving source 2 and the battery module 3, and the first switch valve 9 is arranged in parallel with the first radiator 5. When the first switch valve 9 is opened, the first radiator 5 is short-circuited, so that the first radiator 5 does not participate in work; when the first switch valve 9 is closed, the first radiator 5 is connected into the cooling circulation loop, so that the first radiator 5 participates in work. Among them, the first switch valve 9 can be an electromagnetic ball valve.

[0047] It should be noted that the cooling medium flowing in the first flow channel 51 of the first radiator 5 suffers greater resistance than that in a common pipeline, and therefore, when the first radiator 5 does not participate in work, the short circuit through the first switch valve 9 can avoid the cooling medium flowing in the cooling circulation loop from suffering greater resistance.

[0048] Referring to Figure 1 and Figure 2 , the heat dissipation assembly further comprises a ventilation device 8 for leading away the heat of the cooling medium flowing in the second radiator 6; wherein the second radiator 6 can be a heat exchanger, and the ventilation device 8 can be a fan.

[0049] Referring to Figure 1 and Figure 2 , in some embodiments, the liquid cooling device further comprises a second switch valve 10 respectively communicating with the charging module 4 and the liquid storage tank 1, and the second switch valve 10 is arranged in parallel with the second radiator 6. When the second switch valve 10 is opened, the second radiator 6 is short-circuited, so that the second radiator 6 does not participate in work; when the second switch valve 10 is closed, the second radiator 6 is connected into the cooling circulation loop, so that the second radiator 6 participates in work. Wherein the second switch valve 10 can be an electromagnetic ball valve.

[0050] It should be noted that the cooling medium flowing in the second radiator 6 suffers greater resistance than that in a common pipeline, and therefore, when the second radiator 6 does not participate in work, the short circuit through the first switch valve 9 can avoid the cooling medium flowing in the cooling circulation loop from suffering greater resistance.

[0051] It should be understood that the first radiator 5 and the second radiator 6 in the present scheme are not specified, i.e. the first radiator 5 can also be a heat exchanger, the second radiator 6 can also be a plate heat exchanger, and the heat dissipation assembly can also be a combination of the first radiator 5 and the second radiator 6.

[0052] Referring to Figure 2 , in some embodiments, the liquid cooling device further comprises a heater 20 connected into the cooling circulation loop in series, the heater 20 can heat the cooling medium flowing in the cooling circulation loop, avoiding the influence of the battery module 3 on the service life due to charging at low temperature, or avoiding the influence of the cooling medium on the flow rate due to freezing at too low temperature. Wherein the heater 20 can respectively communicate with the first radiator 5 and the driving source 2, and the heater 20 is arranged in parallel with the first switch valve 9.

[0053] It should be noted that when the cooling liquid temperature is too low, the heater 20 heats the cooling medium flowing in the cooling circulation loop; when the cooling liquid temperature is in the normal interval and the heater 20 and the first radiator 5 do not participate in work, the first switch valve 9 is opened, thereby short-circuiting the heater 20 and the first radiator 5, avoiding excessive resistance of the cooling circulation loop to hinder the flow of the cooling medium.

[0054] Please refer to Figure 1 and Figure 2 , the battery module 3 includes a first distributor 31, a battery pack 32 and a second distributor 33, the first distributor 31 is provided with a first liquid collecting end and a first liquid distribution end, the first liquid collecting end is communicated with the driving source 2; the battery pack 32 is provided with a plurality of, the plurality of battery packs 32 are communicated with the first liquid distribution end; the second distributor 33 is provided with a second liquid collecting end and a second liquid distribution end, the plurality of battery packs 32 are communicated with the second liquid distribution end, the second liquid collecting end is communicated with the charging module 4, so that the plurality of battery packs 32 are cooled through the first distributor 31 and the second distributor 33.

[0055] In one example, the battery pack 32 is provided with four, the first liquid distribution end of the first distributor 31 is provided with four liquid outlets, and the four liquid outlets are respectively communicated with the four battery packs 32; the second liquid distribution end of the second distributor 33 is provided with four liquid inlets, and the four liquid inlets are respectively communicated with the four battery packs 32.

[0056] Please refer to Figure 1 and Figure 2 , the charging module 4 includes a third distributor 41, a charging group 42 and a fourth distributor 43, the third distributor 41 is provided with a third liquid collecting end and a third liquid distribution end, the third liquid collecting end is communicated with the battery module 3; the charging group 42 is provided with a plurality of, the plurality of charging groups 42 are communicated with the third liquid distribution end; the fourth distributor 43 is provided with a fourth liquid collecting end and a fourth liquid distribution end, the plurality of charging groups 42 are communicated with the fourth liquid distribution end, the fourth liquid collecting end is communicated with the liquid storage tank 1, so that the plurality of charging groups 42 are cooled through the third distributor 41 and the fourth distributor 43.

[0057] In one example, the charging group 42 is provided with six, the third liquid distribution end of the third distributor 41 is provided with six liquid outlets, and the six liquid outlets are respectively communicated with the six charging groups 42; the fourth liquid distribution end of the fourth distributor 43 is provided with six liquid inlets, and the six liquid inlets are respectively communicated with the six charging groups 42.

[0058] In the utility model, under different ambient temperatures, the heat management mode of the heat dissipation assembly is different, and the heat management mode of the heat dissipation assembly is explained below.

[0059] 1, completely natural cold, the battery module 3 and the charging module 4 work simultaneously, or the charging module 4 works alone.

[0060] When the ambient temperature is low enough, for example, below 10℃, the natural cooling can meet the cooling of the battery module 3 and the charging module 4. In order to reduce the energy consumption, the cooling source 7 (a cold water machine) is turned off, and the heat is dissipated to the surrounding atmosphere by the forced convection cooling of the second radiator 6 in the ventilation device 8.

[0061] The circulation of the cooling medium is: the storage tank 1→ the driving source 2→ the first radiator 5→ the first distributor 31→ the battery module 32→ the second distributor 33→ the third distributor 41→ the charging module 42→ the fourth distributor 43→ the second radiator 6→ the storage tank 1. The cooling medium flows through the first radiator 5, but the first radiator 5 does not participate in the work.

[0062] Alternatively, the circulation of the cooling medium is: the storage tank 1→ the driving source 2→ the heater 20→ the first radiator 5→ the first distributor 31→ the battery module 32→ the second distributor 33→ the third distributor 41→ the charging module 42→ the fourth distributor 43→ the second radiator 6→ the storage tank 1. The heater 20 participates in the work, and the cooling medium flows through the first radiator 5, but the first radiator 5 does not participate in the work.

[0063] Alternatively, the circulation of the cooling medium is: the storage tank 1→ the driving source 2→ the first switch valve 9→ the first distributor 31→ the battery module 32→ the second distributor 33→ the third distributor 41→ the charging module 42→ the fourth distributor 43→ the second radiator 6→ the storage tank 1.

[0064] The working mode of the charging pile can be: the municipal power charges the battery module 3, or the battery module 3 charges the municipal power, or the battery module 3 charges the electric vehicle, or the municipal power charges the electric vehicle, or the battery module 3 and the municipal power charge the electric vehicle at the same time.

[0065] 2. Completely natural cooling, and the charging module 4 works.

[0066] The charging module 4 includes an alternating current charging module and a direct current charging module. When the valley electricity and the charging power do not reach the upper limit of the municipal power grid load, only the alternating current module participates in the work to charge the electric vehicle, and the battery module 3 is in an idle state and does not participate in the work.

[0067] The circulation of the cooling medium is: the storage tank 1→ the driving source 2→ the first radiator 5→ the first distributor 31→ the battery module 32→ the second distributor 33→ the third distributor 41→ the charging module 42→ the fourth distributor 43→ the second radiator 6→ the storage tank 1. The cooling medium flows through the first radiator 5, but the first radiator 5 does not participate in the work; the cooling medium flows through the battery module 32, but the battery module 32 does not participate in the work; and the second radiator 6 participates in the work.

[0068] 3, Partial natural cooling, battery module 3 and charging module 4 work at the same time, or charging module 4 works alone.

[0069] When the environment temperature is neither high nor low, for example, in the spring and autumn transition seasons, pure natural cooling cannot completely meet the heat dissipation requirements of the charging module 4 and the battery module 3, and the first radiator 5 and the second radiator 6 need to work at the same time and reach the best energy-saving state.

[0070] The circulation of the cooling medium is: storage tank 1→drive source 2→first radiator 5→first distributor 31→battery pack 32→second distributor 33→third distributor 41→charging group 42→fourth distributor 43→second radiator 6→storage tank 1.

[0071] The working mode of the charging pile can be: municipal power charges the battery module 3, or the battery module 3 charges the municipal power, or the battery module 3 charges the electric vehicle, or the municipal power charges the electric vehicle, or the battery module 3 and the municipal power charge the electric vehicle at the same time.

[0072] 4, Partial natural cooling, charging module 4 works.

[0073] When the environment temperature is neither high nor low, for example, in the spring and autumn transition seasons, in the valley power and the charging power does not reach the upper limit of the municipal power grid load, only the AC module works to charge the electric vehicle at this time, and the battery module 3 is in idle state and does not work. Moreover, pure natural cooling cannot completely meet the heat dissipation requirements of the charging module 4, or natural cooling can meet the heat dissipation requirements of the charging module 4, but at this time the inlet temperature of the battery module 3 is greater than the long-term storage temperature allowed by the battery module 3, at this time the cooling source 7 (chiller) needs to be started to reduce the temperature of the cooling medium and further reduce the temperature of the cooling medium.

[0074] The circulation of the cooling medium is: storage tank 1→drive source 2→first radiator 5→first distributor 31→battery pack 32→second distributor 33→third distributor 41→charging group 42→fourth distributor 43→second radiator 6→storage tank 1. Among them, the first radiator 5 and the second radiator 6 both work.

[0075] 5, Complete cooling source 7 (chiller) cooling.

[0076] When the environment temperature is higher than the highest allowable working environment temperature of the charging module 4, natural cooling cannot provide effective heat dissipation, at this time complete cooling source cooling is relied on. Because the resistance of the cooling medium flowing in the second radiator 6 is relatively large, the second switch valve 10 is opened to make the second radiator 6 in a short-circuit state.

[0077] The circulation of the cooling medium corresponds to: the liquid storage tank 1→ the driving source 2→ the first radiator 5→ the first distributor 31→ the battery pack 32→ the second distributor 33→ the third distributor 41→ the charging group 42→ the fourth distributor 43→ the second switch valve 10→ the liquid storage tank 1.

[0078] The working mode of the charging pile can be that the municipal power charges the battery module 3, or the battery module 3 charges the municipal power, or the battery module 3 charges the electric vehicle, or the municipal power charges the electric vehicle, or the battery module 3 and the municipal power charge the electric vehicle simultaneously.

[0079] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid cooling device, characterized by, The liquid cooling device comprises a storage tank, a driving source, a battery module, a charging module and a heat dissipation assembly connected into a closed cooling circulation loop, the storage tank, the driving source, the battery module and the charging module are sequentially distributed, the storage tank is used for storing a cooling medium, the driving source is used for driving the cooling medium to flow in the cooling circulation loop, and the heat dissipation assembly is used for cooling the cooling medium flowing in the cooling circulation loop.

2. The liquid cooling device of claim 1, wherein, The heat dissipation assembly comprises: a first radiator respectively communicating with the driving source and the battery module; and a second radiator respectively communicating with the charging module and the storage tank. The heat dissipation assembly has a first working state, a second working state and a third working state, when the heat dissipation assembly is in the first working state, the first radiator cools the cooling medium flowing in the cooling circulation loop; when the heat dissipation assembly is in the second working state, the second radiator cools the cooling medium flowing in the cooling circulation loop; and when the heat dissipation assembly is in the third working state, the first radiator and the second radiator both cool the cooling medium flowing in the cooling circulation loop.

3. The liquid cooling device of claim 2, wherein, The first radiator is provided with a first flow channel and a second flow channel distributed in parallel, the first flow channel respectively communicates with the driving source and the battery module. The heat dissipation assembly further comprises a cold source having an inlet end and an outlet end, and the second flow channel respectively communicates with the inlet end and the outlet end of the cold source.

4. The liquid cooling device of claim 2, wherein, The liquid cooling device further comprises a first switch valve respectively communicating with the driving source and the battery module, and the first switch valve is arranged in parallel with the first radiator.

5. The liquid cooling device of claim 2, wherein, The heat dissipation assembly further comprises a ventilation device for leading out the heat of the cooling medium flowing in the second radiator.

6. The liquid cooling device of claim 2, wherein, The liquid cooling device further comprises a second switch valve respectively communicating with the charging module and the storage tank, and the second switch valve is arranged in parallel with the second radiator.

7. The liquid cooling device of any of claims 1-6, wherein, The liquid cooling device further comprises a heater connected in series in the cooling circulation loop.

8. The liquid cooling device of claim 1, wherein, The battery module comprises: a first distributor provided with a first liquid collecting end and a first liquid distribution end, the first liquid collecting end communicating with the driving source; a plurality of battery groups, the plurality of battery groups communicating with the first liquid distribution end; and a second distributor provided with a second liquid collecting end and a second liquid distribution end, the plurality of battery groups communicating with the second liquid distribution end, and the second liquid collecting end communicating with the charging module.

9. The liquid cooling device of claim 1, wherein, The charging module comprises: a third distributor provided with a third liquid collecting end and a third liquid distribution end, the third liquid collecting end communicating with the battery module; a plurality of charging groups, the plurality of charging groups communicating with the third liquid distribution end; and a fourth distributor provided with a fourth liquid collecting end and a fourth liquid distribution end, the plurality of charging groups communicating with the fourth liquid distribution end, and the fourth liquid collecting end communicating with the storage tank.

10. A charging post, characterized in that, The liquid cooling device comprises any one of claims 1-9. The liquid cooling device comprises any one of claims 1-9.

Images