Semi-liquid-cooled novel charging pile

Abstract

The utility model discloses a semi-liquid-cooled novel charging pile, and relates to the technical field of electric vehicle charging. Comprising a plurality of power modules which are connected in parallel, a parallel circuit formed by the power modules is electrically connected with a module soft start PCB, a filter WF, a step-down power supply KP and a liquid cooling system through contactors, the module soft start PCB is electrically connected with the filter WF and the step-down power supply KP, the filter WF is electrically connected with a voltage regulator FVC, the step-down power supply KP and a circuit breaker, and the circuit breaker is electrically connected with the filter WF. The circuit breaker is electrically connected with high-voltage input direct current, the voltage regulator FVC is grounded, the step-down power supply KP is electrically connected with a plurality of power supply UP modules, and the plurality of power supply UP modules are connected in parallel. By adopting the liquid cooling system, the charging pile can more effectively remove heat generated by the power module, so that a lower working temperature can be kept when the charging pile works under high power density, and more stable performance can be provided in a high-temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging technology, specifically a novel semi-liquid-cooled charging pile. Background Technology

[0002] In recent years, with increased environmental awareness and technological advancements, new energy vehicles (NEVs), especially electric vehicles (EVs), have been rapidly promoted globally. Electric vehicles not only reduce the environmental pollution caused by traditional gasoline-powered vehicles but also provide users with a more economical and convenient mode of transportation. However, the widespread adoption of electric vehicles faces a key bottleneck—slow charging speeds and insufficient charging infrastructure. Especially during long-distance travel or emergencies, the long wait for charging becomes a major pain point in the user experience.

[0003] Traditional DC charging stations mostly use air-cooling systems. These systems use fans to draw air into the charging station to dissipate heat generated by electrical components and rectifier modules. While this method is low-cost and easy to maintain, its heat dissipation efficiency is limited, making it difficult to support high-power fast charging. Under high current conditions, air-cooling systems require thicker cables to increase the heat dissipation area, which not only increases manufacturing costs but also makes the charging gun cables bulky, affecting the user experience.

[0004] To overcome these challenges, liquid cooling technology has been gradually introduced into charging equipment. Liquid-cooled supercharging stations utilize a dedicated liquid circulation channel between the cable and the charging gun, efficiently removing heat generated during charging. This allows thinner cables to carry larger charging currents, significantly improving charging efficiency and speed. Despite the numerous advantages of a fully liquid-cooled system, its high cost and technical complexity limit its large-scale application. Utility Model Content

[0005] The purpose of this utility model is to provide a novel semi-liquid-cooled charging pile to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a semi-liquid-cooled novel charging pile, comprising multiple power modules connected in parallel. The parallel circuit composed of the multiple power modules is electrically connected to a module soft-start PCB, a filter WF, a step-down power supply KP, and a liquid cooling system via a contactor. The module soft-start PCB is electrically connected to the filter WF and the step-down power supply KP. The filter WF is electrically connected to a voltage regulator FVC, the step-down power supply KP, and a circuit breaker. The circuit breaker is electrically connected to a high-voltage DC input. The voltage regulator FVC is grounded. The step-down power supply KP is electrically connected to multiple power supply UP modules, which are connected in parallel.

[0007] Furthermore, the liquid cooling system is electrically connected to the fuse and the DC energy meter via a relay, and both the fuse and the DC energy meter are electrically connected to a parallel circuit composed of multiple power modules.

[0008] Furthermore, the plurality of power supply UP modules include a system power supply module, a BMS power supply module, a fan power supply module, and a liquid cooling pump power supply module. The system power supply module, BMS power supply module, fan power supply module, and liquid cooling pump power supply module are connected in parallel with each other. At the same time, the system power supply module, BMS power supply module, fan power supply module, and liquid cooling pump power supply module are all electrically connected to a step-down power supply KP, and the system power supply module is electrically connected to a circuit breaker.

[0009] Furthermore, the power supply UP module includes a DC power input terminal, which is electrically connected to a DC power supply. The DC power supply is electrically connected to 12AWG and 16AWG cables, and both the 12AWG and 16AWG cables are electrically connected to external devices.

[0010] Furthermore, the DC power supply includes, but is not limited to, 12V and 24V power supplies.

[0011] Furthermore, the power module includes a charger electrically connected to an anti-reverse diode and a shunt, the anti-reverse diode being electrically connected to a DC contactor via a fuse, and the shunt being electrically connected to the DC contactor.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Firstly, by employing a liquid cooling system, this utility model enables the charging pile to more effectively remove the heat generated by the power module, thereby maintaining a lower operating temperature when working under high power density and providing more stable performance in high-temperature environments.

[0014] Secondly, by setting up multiple independent and parallel power supply UP modules (such as system power supply module, BMS power supply module, fan power supply module and liquid cooling pump power supply module), the power supply strategy can be flexibly adjusted according to actual needs, ensuring that each component can obtain a stable and appropriate power supply. Attached Figure Description

[0015] Figure 1 This is a circuit diagram of the semi-liquid-cooled new charging pile of this utility model.

[0016] Figure 2 This is the circuit diagram of the power supply UP module of this utility model;

[0017] Figure 3 This is a circuit diagram of the power module of this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] refer to Figures 1-3 This embodiment provides a novel semi-liquid-cooled charging pile, which includes multiple power modules. These power modules are connected in parallel, and each power module includes a charger AU (1000V / 30KW). The charger AU is electrically connected to an anti-reverse diode 1MD (500A) and a shunt RSX (200A). The anti-reverse diode 1MD is electrically connected to a fuse FU (750V / 200A), the fuse FU is electrically connected to a DC contactor K1 (1000V / 100A), and the shunt RSX is electrically connected to a DC contactor K2 (1000V / 100A).

[0020] In this embodiment, six power modules are provided: AU1, AU2, AU3, AU4, AU5, and AU6. That is, the parallel circuit consisting of these six power modules is electrically connected to the module soft-start PCB, filter WF, step-down power supply KP, and liquid cooling system via contactors KM1 and KM2. Specifically, contactor KM1 and the module soft-start PCB are electrically connected via a 100Ω resistor.

[0021] Furthermore, the module's soft-start PCB is electrically connected to the filter WF and the step-down power supply KP. Simultaneously, the filter WF is electrically connected to the voltage regulator FVC, the step-down power supply KP, and the circuit breaker QF. Further, the circuit breaker QF is electrically connected to the high-voltage DC input, the voltage regulator FVC is grounded, and the step-down power supply KP is electrically connected to multiple power supply UP modules, which are connected in parallel.

[0022] Specifically, the multiple power supply UP modules include a system power supply module, a BMS power supply module, a fan power supply module, and a liquid cooling pump power supply module. It is worth noting that the system power supply module, BMS power supply module, fan power supply module, and liquid cooling pump power supply module have identical circuit structures. Furthermore, these modules are connected in parallel, and all are electrically connected to the step-down power supply KP. The system power supply module is also electrically connected to the circuit breaker QF1.

[0023] To elaborate further, the power supply UP module includes a DC power input terminal, which is electrically connected to a DC power source. The DC power source is electrically connected to 12AWG and 16AWG cables, both of which are electrically connected to external devices. In other words, the 12AWG cable allows for electrical connection to low-power devices, while the 16AWG cable allows for electrical connection to high-power devices.

[0024] In this embodiment, the DC power supply of the devices in the power supply UP module includes, but is not limited to, 12V and 24V power supplies. Specifically, the DC power supply of the system power supply module and the BMS power supply module in this embodiment is set to 12V, while the DC power supply of the fan power supply module and the liquid cooling pump power supply module in this embodiment is set to 24V.

[0025] Furthermore, the liquid cooling system is electrically connected to the charging gun, fuse K1, and fuse K2. Fuse K1 is electrically connected to the DC energy meter and fuse 1FU. At the same time, fuse 1FU and fuse K2 are both electrically connected to a parallel circuit composed of multiple power modules.

[0026] Specifically, the liquid cooling system in this embodiment is a liquid cooling system in the prior art, which includes a coolant (selected as deionized water or ethylene glycol aqueous solution), a circulation pump (model Grundfos CR 32-3), a heat exchanger (model AlfaLaval CB20-50), a cold plate liquid cooling module (model Lenovo Neptune Direct-to-Node LiquidCooling System), a control unit (model Vertiv™ Liebert® VIC), and a monitoring system (model EcoStruxure IT). Therefore, the specific composition of the liquid cooling system is not described in detail in this embodiment.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A semi-liquid-cooled new charging pile, characterized in that, The power module includes a plurality of parallel power modules, and the parallel circuit composed of the plurality of power modules is electrically connected with a module soft start PCB, a filter WF, a voltage reducing power supply KP and a liquid cooling system through a contactor, the module soft start PCB is electrically connected with the filter WF and the voltage reducing power supply KP, the filter WF is electrically connected with a voltage regulator FVC, the voltage reducing power supply KP and a circuit breaker, the circuit breaker is electrically connected with high-voltage input direct current, the voltage regulator FVC is grounded, and the voltage reducing power supply KP is electrically connected with a plurality of power supply UP modules, and the plurality of power supply UP modules are parallel to each other.

2. The semi-liquid-cooled novel charging pile according to claim 1, characterized in that, The liquid cooling system is electrically connected with a fuse and a direct current energy meter through a relay, and the fuse and the direct current energy meter are electrically connected with the parallel circuit composed of the plurality of power modules.

3. The semi-liquid-cooled novel charging pile according to claim 1, characterized in that, The plurality of power supply UP modules include a system power supply module, a BMS power supply module, a fan power supply module and a liquid cooling pump power supply module, the system power supply module, the BMS power supply module, the fan power supply module and the liquid cooling pump power supply module are parallel to each other, the system power supply module, the BMS power supply module, the fan power supply module and the liquid cooling pump power supply module are electrically connected with the voltage reducing power supply KP, and the system power supply module is electrically connected with the circuit breaker.

4. The semi-liquid-cooled novel charging pile according to claim 1 or 3, characterized in that, The power supply UP module includes a direct current power supply input end, the direct current power supply input end is electrically connected with a DC power supply, the DC power supply is electrically connected with 12AWG wire and 16AWG wire, and the 12AWG wire and the 16AWG wire are electrically connected with external equipment.

5. The semi-liquid-cooled novel charging pile according to claim 4, characterized in that, The DC power supply includes but is not limited to a 12V power supply and a 24V power supply.

6. The semi-liquid-cooled novel charging pile according to claim 1, characterized in that, The power module includes a charger, the charger is electrically connected with an anti-reverse diode and a shunt, the anti-reverse diode is electrically connected with a direct current contactor through a fuse, and the shunt is electrically connected with the direct current contactor.

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