WO2021129875A1

WO2021129875A1 - Charging unit temperature adjustment system, charging case, swapping station, and energy storage station

Info

Publication number: WO2021129875A1
Application number: PCT/CN2020/140269
Authority: WO
Inventors: 张建平; 陆文成
Original assignee: 奥动新能源汽车科技有限公司
Priority date: 2019-12-26
Filing date: 2020-12-28
Publication date: 2021-07-01

Abstract

A charging unit temperature adjustment system (200), a charging case, a swapping station (100), and an energy storage station. The charging unit temperature adjustment system (200) is used for adjusting the temperature of a charging unit (162). The charging unit (162) is used for charging a quick-swap battery pack (300) of an electric vehicle. The charging unit temperature adjustment system (200) comprises: a fluid circulation unit (210), with the fluid circulation unit (210) being arranged corresponding to the charging unit (162), and being used for absorbing heat generated by the charging unit (162); a fluid supply unit (220), with the fluid supply unit (220) being used for supplying a fluid to the fluid circulation unit (210); and a fluid cooling unit (230), with the fluid cooling unit (230) being connected between the fluid circulation unit (210) and the fluid supply unit (220), and being used for cooling the fluid flowing through the fluid cooling unit (230). The heat of the charging unit (162) is absorbed by using the fluid, which is supplied by the fluid supply unit (220), to circularly flow in the fluid circulation unit (210), such that the temperature of the charging unit (162) is within a suitable range, and the optimum state for charging the battery pack (300) is maintained.

Description

Charging unit temperature regulation system, charging box, switching station and energy storage station

This application claims the priority of Chinese patent applications CN2019113655540 and CN2019113706379 whose filing date is December 26, 2019. This application quotes the full text of the aforementioned Chinese patent application.

Technical field

The invention relates to the field of power exchange for electric vehicles, in particular to a charging unit temperature adjustment system, a charging box, a exchange station and an energy storage station.

Background technique

At present, the emission of automobile exhaust is still an important factor in environmental pollution. In order to control automobile exhaust, people have developed natural automobiles, hydrogen-fueled automobiles, solar-powered automobiles, and electric automobiles to replace fuel-burning automobiles. Among them, the most promising application is electric vehicles. Current electric vehicles mainly include two types: direct charging and quick-change.

Due to the limitation of charging time and location, many new energy electric vehicles have gradually adopted the quick-change type (ie, the mode of quickly changing the battery) for energy replenishment.

The chargers in the swap station are all high-power consuming equipment, and the power of the charger in the entire swap station is above 600KW. The overall efficiency of the charger is generally about 90%, and about 10% is consumed by the charger (to be precise, it is consumed on the charger power module). These consumption will eventually cause the charger power module to heat up and reduce the service life of the module. Improper control will directly cause damage to the module. Therefore, it is necessary to implement necessary cooling measures for the charger.

At present, the energy acquisition of electric vehicles mainly includes two methods: charging and swapping. Since the battery swapping method can realize the rapid replenishment of electric energy and reduce the waiting time of customers, many new energy electric vehicles gradually adopt the mode of battery replacement for energy replenishment. This not only improves the utilization rate of the switching station, but also enables centralized charging of the battery at night, realizing the "peak shaving and energy storage" of the electric load. At the same time, the comprehensive utilization efficiency of power equipment is improved, which has high promotion value and economic significance.

The characteristics of the battery determine that its charge and discharge must be carried out in a certain temperature range, otherwise it will cause its performance to decline. The best working temperature of the battery pack on an electric vehicle is 10-30 degrees Celsius. When the battery pack is charged in a switching station or an energy storage station, it will heat up due to charging and cause the temperature to rise, and the environmental temperature difference in different seasons and regions will also have a great impact on the temperature of the battery pack, which in turn affects the battery The charging and discharging performance of the bag will shorten the battery life in the long term.

Summary of the invention

The technical problem to be solved by the present invention is to eliminate the above risks and provide a charging unit temperature adjustment system, a charging box, a power exchange station and an energy storage station.

The present invention solves the above technical problems through the following technical solutions:

A temperature adjustment system for a charging unit, the charging unit is used to charge a quick-change battery pack of an electric vehicle, the temperature adjustment system is used to adjust the temperature of the charging unit, and the temperature adjustment system includes:

A fluid circulation unit, the fluid circulation unit is arranged corresponding to the charging unit, and is used to absorb the heat generated by the charging unit;

A fluid supply unit for supplying fluid to the fluid circulation unit; and

A fluid cooling unit, which is connected between the fluid circulation unit and the fluid supply unit, and is used for cooling the fluid flowing through the fluid cooling unit.

In this solution, the charging unit is cooled by the fluid circulation unit, so that the charging unit can work within a normal temperature.

Preferably, the switching station or the energy storage station has a plurality of charging bins for charging the battery pack, and the charging unit is provided in the charging bin.

In this solution, this arrangement is easier to dissipate the heat of the charging units than the centralized placement of the charging units.

Preferably, the fluid circulation unit is provided on the upper surface or the lower surface of the charging unit in the charging compartment.

In this solution, the fluid circulation unit directly covers the surface of the charging unit, which makes it easier to cool the charging unit.

Preferably, the fluid circulation unit includes a circulation pipeline matching the size of the charging unit.

Preferably, the fluid circulation unit is provided inside and/or outside the charging unit.

Preferably, the fluid circulation unit is attached to the inner wall and the outer wall of the housing of the charging unit.

Preferably, the charging unit is arranged above the battery pack placement position in the charging compartment, and the fluid circulation unit arranged on the outer wall is arranged between the charging unit and the battery pack.

Preferably, a moving unit is further provided on the outer wall of the charging unit, and the moving unit is used to move the corresponding fluid circulation unit in an up and down direction so that the fluid circulation unit contacts the upper surface of the battery pack.

In this solution, by providing a mobile unit, the fluid circulation unit can also be used to dissipate heat from the battery pack.

Preferably, the fluid supply unit includes a liquid storage device and a delivery device, and the delivery device is used to deliver the fluid in the liquid storage device to the fluid circulation unit.

Preferably, the temperature adjustment system includes: a heat dissipation fan arranged close to the charging unit.

Preferably, the temperature adjustment system further includes: a shut-off valve provided at the inlet end of the fluid circulation unit.

A charging box includes the charging unit temperature adjustment system described above.

Preferably, a charging rack is provided in the charging box, the charging rack includes a plurality of charging bins, each of the charging bins is provided with a charging unit, and the charging unit and the battery pack are one-to-one It is configured to charge the corresponding battery pack through the charging unit.

Preferably, each of the charging compartments is provided with a charging unit and a connecting socket, the charging unit is electrically connected to the connecting socket, and the connecting socket is used to connect the battery pack so as to realize the connection to the battery. Pack charging.

Preferably, a heat exchange assembly is provided in the charging bin, and the heat exchange assembly is used to exchange external heat of the battery pack to adjust the temperature of the battery pack,

A heat-insulating plate is arranged between the heat exchange assembly and the charging unit, and the heat-insulating plate is arranged on the lower shell of the charging unit, and the heat exchange assembly is sequentially arranged below the heat-insulating plate With the battery pack. A switching station includes the charging unit temperature adjustment system as described above.

An energy storage station includes the charging unit temperature adjustment system described above.

The positive improvement effect of the present invention is that the charging unit is cooled by the fluid circulation unit, so that the charging unit can work within a normal temperature. The battery pack temperature adjustment method of the present invention collects the temperature of the battery pack in real time, and adjusts the temperature of the battery pack in real time by controlling the temperature adjustment system, so that the temperature of the battery pack is always within a suitable working temperature range, and the battery pack is in the best performance . The charging box, switching station and energy storage station have the same effect.

Description of the drawings

Fig. 1 is a schematic diagram of a plan structure of a substation according to embodiments 1 and 3 of the present invention.

Fig. 2 is a schematic diagram of the structure of the charging stand according to embodiments 1 and 3 of the present invention.

FIG. 3 is a schematic diagram of the module structure of the temperature adjustment system according to Embodiment 1 of the present invention.

Fig. 4 is a schematic structural diagram of a charging bin according to Embodiment 1 of the present invention.

Fig. 5 is a schematic diagram of the structure of a charging bin according to Embodiment 2 of the present invention.

6 is a schematic flowchart of a method for adjusting the temperature of a battery pack according to Embodiment 3 of the present invention.

FIG. 7 is a schematic diagram of the structure of the battery compartment of Embodiment 3 of the present invention.

FIG. 8 is a schematic diagram of the structure of the connection socket of Embodiment 3 of the present invention.

FIG. 9 is a schematic diagram of the module structure of the temperature adjustment system according to Embodiment 3 of the present invention.

Description of reference signs:

Example 1-3 shared

Swap station 100; full-function container 110; charging room 111; battery swap platform 112; monitoring room 113; charging container 120; battery swap trolley 130; palletizer 140; rail 150; charging rack 160; charging bin 161; charging unit 162 ; Battery pack 300

Examples 1 and 2

Charging unit temperature adjustment system 200; fluid circulation unit 210; fluid supply unit 220; fluid cooling unit 230; electromagnetic shut-off valve 240; mobile unit 250

Example 3

Temperature adjustment system 200; fluid supply unit 210; cooling and heating unit 220; fluid passage 230; connection socket 260; circuit connector 261; liquid circuit connector 262; shut-off valve 263; heat exchange assembly 264; heat dissipation assembly 265; heat shield 266

Detailed ways

In the following, the present invention will be further described by way of embodiments in conjunction with the drawings, but the present invention is not limited to the scope of the following embodiments.

Example 1

Fig. 1 shows a switching station 100 according to an embodiment of the present invention.

The switching station 100 is a container-type switching station 100. The swap station 100 includes a full-function container 110 and a charging container 120 (charging box).

The full-function container 110 includes a charging room 111, a power exchange platform 112, and a monitoring room 113. The charging container 120 is vertically connected to the full-function container 110 and communicates with the charging chamber 111 of the full-function container 110.

A charging rack 160 is provided in the charging chamber 111 of the full-function container 110 and the charging container 120. The monitoring room 113 is used to monitor the operation of the entire switching station. The battery exchange platform 112 is used to exchange electricity for the vehicle.

The battery swapping station 100 is also provided with a battery swapping trolley 130 and a palletizer 140. The battery swapping trolley 130 can move between the battery swapping platform 112 and the charging chamber 111. The movement is generally linear, and its moving direction is generally perpendicular to the moving direction of the palletizer 140. The palletizer 140 can move back and forth in the charging chamber 111 and the charging container 120 along the rail 150 to be able to reach each charging rack 160.

The vehicle is parked on the battery swapping platform 112, and the battery swapping trolley 130 moves between the battery swapping platform 112 and the charging chamber 111 in a direction perpendicular to the rail 150 to remove the battery 300 to be charged from the vehicle and transport it to the pallet. Machine 140, or receive the fully charged battery 300 from the palletizer 140 and transport it and install it on the vehicle.

The palletizer 140 moves along the rail 150, moves the battery 300 to be charged to each charging rack 160 in the charging chamber 111 for charging, or takes out the fully charged battery 300 from each charging rack 160 in the charging chamber 111, And transfer it to the battery exchange trolley 130.

The vehicle may be a variety of quick-change electric vehicles or hybrid vehicles such as SUVs, cars, off-road vehicles, trucks, and buses.

Of course, the switching station 100 of the present invention may also be of other types and forms.

As shown in FIG. 2, the charging rack 160 includes a plurality of charging bins 161, the charging bins 161 are used to place the batteries 300, and each charging bin 161 is provided with a charging unit 162, and the corresponding battery can be matched by the charging unit 162 as needed. 300 for charging.

The charging unit temperature adjustment system 200 of an embodiment of the present invention is applied to the charging chamber 111 and the charging container 120 of the above-mentioned switching station 100.

The charging unit temperature adjustment system 200 is used to adjust the temperature of the charging unit 162 during the charging process.

As shown in FIG. 3, the charging unit temperature adjustment system 200 includes: a fluid circulation unit 210, the fluid circulation unit 210 is arranged corresponding to the charging unit 162, and is used to absorb the heat generated by the charging unit 162; a fluid supply unit 220, a fluid supply unit 220 It is used to provide fluid for the fluid circulation unit 210; and a fluid cooling unit 230, which is connected between the fluid circulation unit 210 and the fluid supply unit 220, and is used to cool the fluid flowing through the fluid cooling unit 230.

The circulating flow of the fluid in the fluid circulation unit 210 exchanges heat with the charging unit 162, thereby cooling the charging unit 162, so that the temperature of the charging unit 162 is maintained within the normal operating temperature range.

There are already many fluid cooling units 230 in the prior art for cooling the fluid flowing therethrough, which will not be repeated here.

The charging unit 162 is arranged in the charging compartment 161 and is arranged one-to-one with the battery pack 300. This arrangement is easier to dissipate the heat of the charging unit 162 than the centralized placement of the charging unit 162.

FIG. 4 illustrates a schematic diagram of the charging compartment 161 according to an embodiment of the present invention. The fluid circulation unit 210 is provided on the upper surface or the lower surface of the charging unit 162 in the charging compartment 161.

The fluid circulation unit 210 directly covers the surface of the charging unit 162 and is in direct contact with the surface of the charging unit 162, which can cool the charging unit 162 more effectively.

The fluid circulation unit 210 includes a circulation pipeline matching the size of the charging unit 162.

In this way, the circulation pipeline covers the entire upper or lower surface of the fluid circulation unit 210, which increases the contact area, and can exchange heat with the charging unit 162 more effectively, thereby cooling the charging unit 162.

The fluid circulation unit 210 is provided inside and/or outside the charging unit 162.

The charging unit 162 may be a liquid-cooled charger, and a liquid-cooled circuit (fluid circulation unit 210) is provided inside the liquid-cooled charger. However, the present invention is not limited to this, and a circulation pipeline may be additionally provided inside the non-liquid-cooled charging unit 162.

The fluid circulation unit 210 is attached to the inner wall and the outer wall of the housing of the charging unit 162. The circulation pipeline is more convenient to set up in this way, and it will not interfere with other components inside the charging unit 162.

The charging unit 162 is arranged above the position where the battery pack 300 is placed in the charging compartment 161, and the fluid circulation unit 210 arranged on the outer wall is arranged between the charging unit 162 and the battery pack 300, that is, the fluid circulation arranged on the lower surface of the charging unit 162 Unit 210.

Example 2

Fig. 5 illustrates an example of the charging compartment 161 according to another embodiment of the present invention.

A moving unit 250 is also provided on the outer wall of the charging unit 162, and the moving unit 250 is used to move the corresponding fluid circulation unit 210 in the up and down direction so that the fluid circulation unit 210 contacts the upper surface of the battery pack 300.

By providing the mobile unit 250, the fluid circulation unit 210 can also be used to dissipate the battery pack 300, so that the charging unit 162 and the battery pack 300 can be cooled at the same time.

The moving unit 250 may be a device having a telescopic arm or a wall that can move up and down, driven by one or more of a linear motor, a hydraulic motor, a rotary motor, and the like. Of course, alternatively, the mobile unit 250 may also be in other forms.

The fluid supply unit 220 includes a liquid storage device and a delivery device, and the delivery device is used to deliver the fluid in the liquid storage device to the fluid circulation unit 210.

The conveying device can be a water pump such as a piston pump, a gear pump, a vane pump, a centrifugal pump, and an axial flow pump.

The temperature adjustment system of the charging unit includes: a heat dissipation fan arranged close to the charging unit 162. Through the cooling fan, the charging unit 162 can be better dissipated.

The temperature adjustment system of the charging unit further includes a shut-off valve, preferably an electromagnetic shut-off valve 240, and the shut-off valve is provided at the inlet end of the fluid circulation unit 210.

When the ambient temperature is low, the charging unit 162 can dissipate heat naturally. At this time, the electromagnetic shut-off valve 240 is used to stop the liquid cooling heat dissipation.

The charging unit 162 includes a converter that converts the external power source into direct current. The charging unit 162 may also include other components such as a voltage regulator, a supercharger, and a cable.

Example 3

Fig. 1 shows a switching station 100 according to Embodiment 3 of the present invention.

The swap station 100 is a container-type swap station. The swap station 100 includes a full-function container 110 and a charging container 120 (charging box).

The battery swapping station 100 is also provided with a battery swapping trolley 130 and a palletizer 140. The battery swapping trolley 130 can move between the battery swapping platform 112 and the charging chamber 111, and the movement is generally linear, and its moving direction is generally perpendicular to the moving direction of the palletizer 140. The palletizer 140 can move back and forth in the charging chamber 111 and the charging container 120 along the rail 150 to be able to reach each charging rack 160.

The vehicle is parked on the battery swapping platform 112, and the battery swapping trolley 130 moves between the battery swapping platform 112 and the charging chamber 111 in a direction perpendicular to the track 150 to remove the battery pack 300 to be charged from the vehicle and transport it to the yard. The palletizer 140, or the fully charged battery pack 300 is received from the palletizer 140 and transported and installed on the vehicle.

The palletizer 140 moves along the rail 150 to move the battery pack 300 to be charged to each charging rack 160 in the charging chamber 111 for charging, or take out a fully charged battery pack from each charging rack 160 in the charging chamber 111 300, and transfer it to the battery exchange trolley 130.

Of course, the switching station 100 may also be of other types and forms.

As shown in FIG. 2, the charging rack 160 includes a plurality of charging bins 161. The charging bins 161 are used to place the battery packs 300. The charging bins 161 are provided with a charging unit 162. The charging unit 162 charges the battery packs 300 that need to be charged. .

As shown in FIGS. 1-2 and 6-9, a method for adjusting the temperature of battery packs in a power exchange station according to this embodiment, the power station 100 has a temperature adjustment system 200. The method for adjusting the temperature of the battery pack 300 by the temperature adjusting system 200 includes the following steps:

S1, collect the temperature of the battery pack;

S2. According to the collected temperature of the battery pack, control the temperature adjustment system 200 to adjust the temperature of the battery pack 300.

In this embodiment, the temperature of the battery pack 300 is collected in real time, and the temperature of the battery pack 300 is adjusted in real time by controlling the temperature adjustment system 200, so that the battery pack 300 is always within a suitable operating temperature range, thereby maintaining the battery pack 300 The performance is at its best.

In this embodiment, the step of adjusting the temperature of the battery pack 300 includes performing heat exchange with the outer surface of the battery pack 300 to achieve temperature adjustment. By performing heat exchange with the outer surface of the battery pack 300, when the temperature of the battery pack 300 is too high or too low, the temperature of the surface of the battery pack 300 is exchanged to reduce or increase the temperature of the battery pack 300. Among them, the heat exchange is performed by the heat exchange assembly 264. The heat exchange assembly 264 is arranged in the vicinity of the outside of the battery pack 300. The temperature adjustment system 200 controls the heat exchange assembly 264 to contact the outer surface of the battery pack 300 to achieve heat exchange. The battery pack 300 performs temperature adjustment.

In this embodiment, collecting the temperature of the battery pack 300 includes collecting the temperature of multiple areas of the battery pack 300. By collecting the temperature of multiple areas of the battery pack 300, a more accurate temperature of the battery pack 300 can be obtained, avoiding the problem of inaccurate temperature data obtained by collecting only a single area of the battery pack 300 and affecting the service life of the battery pack 300. The overall temperature of the battery pack 300 is always within a suitable working temperature range.

In this embodiment, by setting a heat exchange assembly 264 in different areas outside the battery pack 300, after collecting the temperature of more than one area of the battery pack 300, according to the collected temperature of different areas of the battery pack 300, the temperature adjustment system 200 controls the heat exchange components 264 in the corresponding area to exchange heat. By adjusting the temperature of each area of the battery pack 300 separately, the temperature of each area of the battery pack 300 can be kept consistent, and the local temperature of the battery pack 300 may not drop or rise to a suitable normal operating temperature range.

In this embodiment, the steps of collecting the temperature of the battery pack 300 are:

S11. Collect the temperature of more than 300 sides of the battery pack;

S12. Obtain the temperature of the battery pack 300 according to the temperatures of multiple sides.

Among them, in the above step S11, the process of collecting the temperature of any one side of the battery pack 300 is as follows: multiple collection points are set on one side of the battery pack 300, and the one with the highest temperature value among the multiple collection points is selected as the temperature of the side In this way, the problem of inaccurate temperature values obtained when only one collection point is set can be avoided, thereby affecting the temperature adjustment effect of the battery pack 300.

In this embodiment, the method for controlling the temperature adjustment system 200 to adjust the temperature of the battery pack 300 includes: preset a first temperature threshold and a second temperature threshold in the temperature adjustment system 200, and the first temperature threshold is less than the second temperature threshold; When the collected temperature of the battery pack 300 is between the first temperature threshold and the second temperature threshold, the temperature adjustment system 200 is controlled to output normal temperature fluid to perform constant temperature adjustment on the battery pack 300; when the collected temperature of the battery pack 300 is greater than the second temperature threshold At the temperature threshold, the temperature adjustment system 200 is controlled to output the cooled fluid to cool the battery pack 300; when the collected temperature of the battery pack 300 is less than the first temperature threshold, the temperature adjustment system 200 is controlled to output the heated fluid to the battery pack. The package 300 performs temperature rise adjustment.

As shown in FIG. 11, it is a schematic diagram of the module structure of the temperature adjustment system in this embodiment. The temperature adjustment system 200 in this embodiment includes: a fluid supply unit 210, a cooling and heating unit 220, and a fluid passage 230.

The fluid supply unit 210, the cooling and heating unit 220, the fluid passage 230, and the internal fluid pipeline of the heat exchange assembly 264 communicate with each other to form a closed circulation circuit. The fluid supply unit 210 includes a water pump and a liquid storage tank, and the water pump is used to circulate the fluid in the liquid storage tank. The water pump can be a piston pump, a gear pump, a vane pump, a centrifugal pump, an axial flow pump, etc. The liquid storage tank provides the fluid passage 230 with fluid for heat exchange. The liquid storage tank is preferably a tank body with a heat preservation effect.

The cooling and heating unit 220 includes a cooling unit and a heating unit, and the cooling unit and the heating unit are used for cooling and heating the fluid, respectively.

As shown in FIG. 2, the charging compartment 161 of the charging rack 160 is a non-closed structure to facilitate heat dissipation. Each charging bin 161 is provided with a charging unit 162, and all the charging units 162 are connected in parallel with an external power supply.

A temperature sensor is provided in the charging compartment 161, and the temperature sensor is used to collect the temperature of the battery pack 300. The temperature of the battery pack 300 is collected in real time by the temperature sensor, and the cooling and heating unit 220 is controlled to heat or cool the fluid when the temperature of the battery pack 300 is too low or too high. When the temperature of the battery pack 300 is at a normal temperature, the cooling and heating unit 220 does not work, so that the battery pack 300 is always in a suitable operating temperature range.

Specifically, a minimum temperature threshold and a maximum temperature threshold are preset in the temperature adjustment system 200 (the minimum temperature threshold and the maximum temperature threshold are respectively the minimum temperature and the maximum temperature of the normal operating temperature of the battery pack 300), and the temperature adjustment system 200 The controller compares the temperature value collected by the temperature sensor with two preset temperature thresholds, and then controls the working state of the cooling and heating unit 220 according to the comparison result.

When the temperature value of the battery pack 300 collected by the temperature sensor is less than the minimum temperature threshold or greater than the maximum temperature threshold, the refrigeration and heating unit 220 is controlled to heat or cool the fluid output by the fluid supply unit 210, thereby increasing or decreasing the temperature of the battery pack 300. Temperature; when the temperature value collected by the temperature sensor is greater than the minimum temperature threshold and less than the maximum temperature threshold, the refrigeration and heating unit 220 does not work, and there is no need to heat or cool the fluid output by the fluid supply unit 210. It can be made by only circulating the fluid itself The temperature of the battery pack 300 is maintained within the normal range. The specific process is:

When the external environment temperature is low, such as in a cold winter, the temperature of the battery pack 300 is often lower than the minimum temperature of its normal operation. In order to ensure the best performance of the battery pack, the battery pack 300 needs to be kept warm. By controlling the heating unit of the refrigeration and heating unit 220 to heat the fluid, the heated fluid can transfer heat to the battery pack 300 to increase its temperature during the circulation of the fluid pipeline. The continuous circulation of the fluid makes the battery The temperature of the bag 300 is always kept within a suitable temperature range.

When the external environment temperature is high, such as in the hot summer, the temperature of the battery pack 300 will usually exceed its normal operating temperature because the battery pack 300 itself emits heat when charging, in order to ensure the best performance of the battery pack , The battery pack 300 needs to be cooled. The fluid is cooled by controlling the refrigeration unit of the refrigeration and heating unit 220, so that the cooled fluid can absorb the heat of the battery pack 300 during the circulation of the fluid pipeline to reduce its temperature. Through the continuous circulation of the fluid, the battery pack 300 The temperature is always kept within a suitable temperature range.

When the external environment temperature is relatively suitable, the cooling and heating unit 220 stops working and does not heat or cool the fluid. The fluid in the normal temperature state circulates in the fluid pipeline and exchanges heat with the battery pack 300 to maintain the temperature of the battery pack 300 within a suitable temperature range.

Each charging bin 161 is provided with a charging unit 162 and a connecting socket 260. The charging unit 162 is electrically connected to the connecting socket 260, and the connecting socket 260 is used to connect the battery pack 300 to charge the battery pack 300. Such a one-to-one arrangement of the charging unit 162 and the battery pack 300 is easier to dissipate the heat of the charging unit 162 than the centralized placement of the charging unit 162.

During the charging process of the battery pack, the charging unit 162 also emits heat at the same time. When the external temperature itself is relatively high, the heat dissipated by the charging unit 162 will further affect the temperature of the battery pack 300. At this time, the charging unit 162 needs to be cooled. A fluid pipeline may be provided in the charging unit 162, and the fluid pipeline is also connected to the fluid passage 230, so that the cooled fluid can take away the heat emitted by the charging unit 162, so as to avoid damage to the charging unit 162 due to untimely internal heat dissipation.

In order to increase the heat dissipation efficiency of the charging unit 162, a heat dissipation assembly 265 is also provided in the charging compartment 161, and the heat dissipation assembly 265 is provided on the outer surface of the charging unit 162. In this embodiment, the heat dissipation assembly 265 is a plate-shaped member with a built-in fluid pipeline. In other embodiments, the heat dissipation assembly 265 may not have a built-in fluid pipeline.

The heat dissipation component 265 can also be arranged at any position on the outer surface of the charging unit 162 according to needs, and the number of the heat dissipation components 265 can be set according to needs. In FIG. 4, the heat dissipation component 265 is provided on the upper surface of the charging unit 162.

The heat dissipation assembly 265 may also be provided between the charging unit 162 and the battery pack 300. When the heat dissipating component 265 is located at the above position, it can not only dissipate heat to the charging unit 162 but also dissipate heat to the battery pack 300.

Since the battery pack 300 needs to be heated when the external environment temperature is low, the heat emitted by the heat exchange assembly 264 will increase the internal temperature of the charging unit 162, which may cause its internal overheating and damage during operation, affecting the battery pack 300 Therefore, a heat shield 266 is provided between the heat exchange assembly 264 and the charging unit 162. As shown in FIG. 4, the heat insulation board 266 is provided on the lower casing of the charging unit 162, and the heat exchange assembly 264 and the battery pack 300 are sequentially provided under the heat insulation board 266. The heat insulation plate 266 can insulate the influence of the heat emitted by the heat exchange assembly 264 on the charging unit 162.

A shut-off valve 263 is arranged at the front entrance of the built-in fluid pipeline of each charging unit 162, so that the shut-off valve 263 can be closed when the external environment temperature is low to prevent fluid from flowing inside the charging unit 162. This is because when the outside temperature is low, the battery pack 300 needs to be kept warm. At this time, the fluid flowing from the cooling and heating unit 220 is hot, and the charging unit 162 itself generates heat when it is working. The charging unit 162 is heated, and at this time, it is necessary to prevent the heated fluid from entering the inside of the charging unit 162. Among them, the cut-off valve 263 is preferably an electromagnetic cut-off valve, which is convenient for automatic control.

In other embodiments, when the battery pack 300 itself has a built-in fluid pipeline, the temperature adjustment of the battery pack 300 can be achieved by controlling the temperature of the fluid entering the built-in fluid pipeline.

In other embodiments, the temperature of the battery pack 300 can be adjusted at the same time through the heat exchange assembly 264 in the charging bin 161 and the fluid pipeline built in the battery pack 300, specifically controlling the access to the heat exchange assembly 264 and the fluid pipeline. The temperature of the fluid is achieved. By adjusting the inside and outside of the battery pack 300 together, the heating or cooling of the battery pack 300 can be accelerated, so that the battery pack 300 can be quickly maintained in a suitable working temperature range, and the temperature adjustment efficiency is higher.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner" and "outer" is based on the placement position of the device or component when it is used normally, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying what is meant. The device or element must have a specific orientation, be constructed and operated in a specific orientation at all times, unless the context indicates otherwise.

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

A temperature adjustment system for a charging unit, the charging unit is used to charge a quick-change battery pack of an electric vehicle, and the temperature adjustment system is used to adjust the temperature of the charging unit, and is characterized in that the temperature adjustment system include:

A fluid circulation unit, the fluid circulation unit is arranged corresponding to the charging unit, and is used to absorb the heat generated by the charging unit;

A fluid supply unit for supplying fluid to the fluid circulation unit; and

A fluid cooling unit, which is connected between the fluid circulation unit and the fluid supply unit, and is used for cooling the fluid flowing through the fluid cooling unit.
The charging unit temperature adjustment system according to claim 1, wherein there are a plurality of charging bins for charging the battery pack, and the charging unit is provided in the charging bin.
The charging unit temperature adjustment system according to claim 1 or 2, wherein the fluid circulation unit is provided on the upper surface or the lower surface of the charging unit in the charging compartment.
The charging unit temperature adjustment system according to at least one of claims 1 to 3, wherein the fluid circulation unit comprises a circulation pipeline matching the size of the charging unit.
The charging unit temperature adjustment system according to at least one of claims 1 to 4, wherein the fluid circulation unit is provided inside and/or outside the charging unit.
The charging unit temperature adjustment system according to at least one of claims 1 to 5, wherein the fluid circulation unit is attached to the inner wall and the outer wall of the housing of the charging unit.
The charging unit temperature adjustment system according to claim 6, wherein the charging unit is disposed above the battery pack placement position in the charging compartment, and the fluid circulation unit disposed on the outer wall is disposed on the charging unit and Between the battery packs.
The charging unit temperature adjustment system according to claim 7, wherein:

A moving unit is further provided on the outer wall of the charging unit, and the moving unit is used to move the corresponding fluid circulation unit in an up and down direction so that the fluid circulation unit contacts the upper surface of the battery pack.
The charging unit temperature adjustment system according to at least one of claims 1-8, wherein the fluid supply unit comprises a liquid storage device and a conveying device, and the conveying device is used to transfer the liquid in the liquid storage device The fluid is delivered to the fluid circulation unit.
The charging unit temperature adjustment system according to at least one of claims 1-9, wherein the temperature adjustment system comprises: a heat dissipation fan arranged close to the charging unit.
The charging unit temperature adjustment system according to at least one of claims 1-10, wherein the temperature adjustment system further comprises a shut-off valve, and the shut-off valve is provided at the inlet end of the fluid circulation unit.
A charging box, characterized in that it comprises the charging unit temperature adjustment system according to at least one of claims 1-11.
The charging box according to claim 12, wherein a charging rack is provided in the charging box, the charging rack includes a plurality of charging bins, each of the charging bins is provided with one charging unit, so The charging unit and the battery pack are arranged one to one, and the corresponding battery pack is charged by the charging unit.
The charging box according to claim 13, wherein each of the charging compartments is provided with a charging unit and a connecting socket, the charging unit is electrically connected to the connecting socket, and the connecting socket is used for The battery pack is connected to charge the battery pack.
The charging box according to claim 13 or 14, wherein a heat exchange assembly is provided in the charging compartment, and the heat exchange assembly is used to exchange external heat of the battery pack to heat the battery pack. adjust,

A heat-insulating plate is arranged between the heat exchange assembly and the charging unit, and the heat-insulating plate is arranged on the lower shell of the charging unit, and the heat exchange assembly is sequentially arranged below the heat-insulating plate With the battery pack.
A switching station, characterized in that it comprises the charging unit temperature adjustment system according to at least one of claims 12-15.
An energy storage station, characterized in that it comprises the charging unit temperature adjustment system according to at least one of claims 12-15.