Charging pile convenient for power expansion

Abstract

The utility model discloses a charging pile convenient for expanding power, which relates to the technical field of charging equipment, and comprises a power supply assembly arranged in a control cabinet and connected with an electric power source; the plurality of charging terminals are respectively connected with the power supply assembly, and the distances between the charging terminals and the power supply assembly are equal; therefore, each charging terminal can output relatively high power, so that the high-power charging requirement can be met no matter which charging terminal is used by a vehicle owner; the first expansion assembly comprises a first output interface and a plurality of first input interfaces, and each first input interface is connected with the first output interface; when the output power of a single charging terminal cannot meet the charging power required by the to-be-charged equipment, the corresponding number of charging terminals can be respectively connected with the first input interface, and the first output interface is connected with the to-be-charged equipment, so that the power output to the to-be-charged equipment is equal to or greater than the charging power required by the to-be-charged equipment; therefore, the requirement of higher-power fast charging of the to-be-charged equipment is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging equipment technical field especially, it is a kind of charging pile convenient for expanding power. BACKGROUND

[0002] Charging pile is a kind of large power cluster system that the whole or part charging module of charging station is concentrated together to form power pool.It can provide charging service for multiple electric vehicles waiting charging equipment simultaneously.

[0003] There are high-end electric vehicles of partial high-power fast charging in market, there are also electric vehicles of partial low-power slow charging, and charging pile in prior art can only meet the electric vehicles of high-power fast charging or the electric vehicles of low-power slow charging, it is difficult to meet the charging demand of electric vehicles of multiple different powers.

[0004] Therefore, how to make charging pile not only meet the fast charging demand of waiting charging equipment, but also meet the slow charging demand of waiting charging equipment becomes a technical problem that the person skilled in the art needs to solve urgently. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of charging pile convenient for expanding power, to make charging pile not only meet the fast charging demand of waiting charging equipment, but also meet the slow charging demand of waiting charging equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0007] The utility model provides a kind of charging pile convenient for expanding power, the charging pile includes:

[0008] Control cabinet, power supply assembly connected with power source is equipped in the control cabinet;

[0009] Charging terminal, several charging terminals are connected with the power supply assembly respectively, the distance between each charging terminal and the power supply assembly is equal;

[0010] First expansion component, the first expansion component includes first output interface and several first input interfaces, each first input interface is connected with the first output interface, the first input interface is used to be connected with the charging terminal, and the first output interface is used to be connected with waiting charging equipment.

[0011] Preferably, the charging pile further includes second expansion component, the second expansion component includes second input interface and several second output interfaces, the second input interface is connected with several second output interfaces respectively, the second input interface is used to be connected with the charging terminal, and the second output interface is used to be connected with the waiting charging equipment.

[0012] Preferably, the charging pile further comprises a plurality of power supply units connected with the power supply assembly, each of the power supply units is arranged adjacent to a corresponding charging terminal and connected with the corresponding charging terminal; the power supply assembly is configured to output a first set value of voltage to the power supply units, and the power supply units are configured to output a second set value of voltage to the charging terminals, the first set value being greater than the second set value.

[0013] Preferably, the charging terminal has a third input interface and a third output interface, the third input interface is configured to be connected with the power source or the charging terminal, and the third output interface is configured to be connected with the device to be charged.

[0014] Preferably, the control cabinet is provided with a power module, and the control cabinet is provided with a fourth output interface connected with the charging terminal, and the power module is arranged adjacent to the fourth output interface.

[0015] Preferably, the power source is connected with the power supply assembly through a first cable.

[0016] Preferably, the first cable is provided with a heat dissipation layer, and the heat dissipation layer is connected with a heat dissipation assembly.

[0017] Preferably, the first cable is provided with a plurality of insulation layers.

[0018] Preferably, the first cable comprises a plurality of cable lines arranged in parallel, and the two ends of the cable lines are connected with the power source and the power supply assembly respectively; and / or the first cable is provided with an electromagnetic shielding layer.

[0019] Preferably, the first cable only comprises two connectors located at the end portions of the first cable respectively, the connectors are provided with an isolation layer for isolating oxygen; and / or the first cable is a flexible cable.

[0020] Preferably, the input end of the power supply assembly is provided with a pressure sensitive resistor, an overvoltage protector, a fuse, and / or the control cabinet is connected with a grounding wire.

[0021] Preferably, the input end of the power supply assembly and the input end of the charging terminal are provided with filters; and / or the power supply line and the signal line between the charging terminal and the control cabinet are arranged to avoid.

[0022] Compared with the prior art, the utility model discloses the following technical effects:

[0023] The utility model discloses a charging pile including control cabinet, be equipped with the power supply component that links to each other with electric power source in control cabinet, a plurality of charging terminal links to each other with power supply component respectively, the distance between each charging terminal and power supply component is equal, this reduces the problem that the actual output power of this part charging terminal is less than the theoretical output power because of the partial charging terminal that is far from power supply component, makes every charging terminal can output higher power, makes the owner can realize high -power charging demand no matter which charging terminal uses;

[0024] Furthermore, the first expansion assembly includes a first output interface and a plurality of first input interfaces, each first input interface is connected with the first output interface, the first input interface is used for being connected with the charging terminal, and the first output interface is used for being connected with the to-be-charged equipment; when the output power of a single charging terminal cannot meet the charging power required by the to-be-charged equipment, a corresponding number of charging terminals can be connected with the first input interface respectively, and the first output interface is connected with the to-be-charged equipment, so that the power output to the to-be-charged equipment is equal to or greater than the charging power required by the to-be-charged equipment, thereby meeting the higher-power fast-charging demand of the to-be-charged equipment;

[0025] In addition, since the battery generally has a BMS power management system, the BMS power management system can adjust the charging state, so even if the charging power required by the electric vehicle to-be-charged equipment is less than the output power of a single charging terminal, the BMS power management system can also enable the to-be-charged equipment to be charged at the required lower power;

[0026] From the above, the charging pile in the utility model can not only meet the low-power slow-charging demand, but also meet the higher-power fast-charging and high-power fast-charging demand. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0028] Fig. 1 For the structure schematic diagram of the charging pile of expanding power;

[0029] Fig. 2 For the structure schematic diagram of the multiple charging terminals in series;

[0030] Fig. 3 For the structure schematic diagram of the first expansion assembly;

[0031] Wherein, 1, control cabinet; 2, charging terminal; 3, first expansion component; 4, first input interface; 5, first output interface; 6, third input interface; 7, third output interface. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be described in further detail below with reference to the drawings and specific embodiments.

[0034] As Figs. 1-3 shown, the utility model discloses a kind of power expansion convenient charging pile, and charging pile includes: control cabinet 1, power supply component is equipped in control cabinet 1 and is connected with power source;Charging terminal 2, several charging terminal 2 are connected with power supply component respectively, the distance between each charging terminal 2 and power supply component is equal;First expansion component 3, first expansion component 3 includes first output interface 5 and several first input interfaces 4, each first input interface 4 is connected with first output interface 5, first input interface 4 is used to be connected with charging terminal 2, and first output interface 5 is used to be connected with the equipment to be charged.

[0035] The utility model discloses a charging pile, including control cabinet 1, be equipped with the power supply component that links to each other with electric power source in control cabinet 1, a plurality of charging terminal 2 links to each other with power supply component respectively, the distance between each charging terminal 2 and power supply component is equal, this reduces the problem that the actual output power of the part charging terminal 2 is less than the theoretical output power because of the far distance between part charging terminal 2 and power supply component, the power transmission process loss is greater power, make every charging terminal 2 can output higher power, make the owner can realize high power charging demand no matter which charging terminal 2 is used, furthermore, first expansion component 3 includes first output interface 5 and a plurality of first input interface 4, every first input interface 4 links to each other with first output interface 5, and first input interface 4 is used to link to charging terminal 2, and first output interface 5 is used to link to the equipment to be charged, when the output power of single charging terminal 2 can not satisfy the charging power required by the equipment to be charged, can link to first input interface 4 with the corresponding number of charging terminal 2 respectively, and link to first output interface 5 with the equipment to be charged, make the power that exports to the equipment to be charged is equal to or greater than the charging power required by the equipment to be charged, to satisfy the fast charging demand of higher power of the equipment to be charged, and because the battery generally has BMS power management system, and BMS power management system can adjust the charging state, so even if the charging power required by the electric vehicle equipment to be charged is less than the output power of single charging terminal 2, BMS power management system can also make the equipment to be charged charge with the required lower power,

[0036] From the above, the charging pile in the utility model can not only satisfy the demand of low-power slow charging, but also satisfy the demand of higher-power fast charging and high-power fast charging.

[0037] It should be noted that the charging pile in this article and the charging pile that facilitates power expansion have the same structure. The device to be charged can be an electric vehicle, a drone, or an energy storage device, etc., that is suitable for charging by the charging pile. When the charging current and voltage that the device to be charged can accept do not match the voltage and current output by the charging terminal 2, a transformer, rectifier circuit, etc., can be installed at the charging terminal 2 to achieve voltage regulation and current type conversion, so that the charging terminal 2 can be used to charge various devices. The control cabinet 1 contains a power supply component connected to a power source, which can be an external power grid. The power supply component has voltage regulation and conversion functions. The power supply component includes a transformer, a DC / DC conversion module, and a communication module. The transformer converts 380V voltage to 48V or 800V voltage, and the DC / DC conversion module regulates the DC voltage. The communication module connects to the operating terminal, where the controller or operator can adjust the switching state and power distribution state of the power supply component. The power supply component includes more than just the above structure; the power supply component is existing technology, and its specific structure will not be described in detail. The charging terminal 2 can specifically be a charging pile. The connection between charging terminal 2 and power supply component means that the power supply component is connected to charging terminal 2 via a cable to transmit power from the power supply component to charging terminal 2. The connection of several charging terminals 2 to the power supply component means that any two charging terminals 2 are connected in parallel.

[0038] The distance between each charging terminal 2 and the power supply component is equal, and the arrangement can be as follows: (e.g., ...) Fig. 1 As shown, with control cabinet 1 as the center and a set distance as the radius, charging terminals 2 are arranged at a set distance from control cabinet 1, distributed circumferentially around control cabinet 1. The set distance is such that it neither affects the arrangement of control cabinet 1 and charging terminals 2 nor excessively extends the distance between control cabinet 1 and charging terminals 2. Based on this, a parking lot using the charging pile of this utility model can be arranged in a ring along the charging terminals 2, with multiple entrances and exits, so that users can charge nearby; furthermore, while ensuring that the distance between each charging terminal 2 and control cabinet 1 is the same, the charging terminals 2 can be arranged in multiple layers. In this case, the parking lot can be adjusted to a multi-layered ring structure to meet the needs of more devices charging simultaneously.

[0039] The number of the first input interfaces 4 is not less than the number of the charging terminals 2. By setting the first input interfaces 4 and the first output interface 5, the charging power of the plurality of charging terminals 2 can be converged and output from one output interface, which improves the output power output to the device to be charged. The first expansion assembly 3 can be specifically understood as a cable with a plurality of first input interfaces 4 at the first end and one output interface at the second end. The first input interfaces 4 and the charging terminals 2 can be connected through the charging guns of the charging terminals 2, in which case the first input interfaces 4 are matched with the charging guns, i.e., the charging guns can be inserted into the first input interfaces 4 to transmit power, or the second cables can be used to connect the first input interfaces 4 and the charging terminals 2 respectively; the first output interface 5 is connected with the device to be charged through a third cable, and one end of the third cable connected with the device to be charged is provided with a charging gun, and the end connected with the first output interface 5 can be provided with a connector matched with the first output interface 5.

[0040] Further, the charging pile further comprises a second expansion assembly, the second expansion assembly comprises a second input interface and a plurality of second output interfaces, the second input interface is connected with the plurality of second output interfaces respectively, the second input interface is used for being connected with the charging terminal 2, and the second output interface is used for being connected with the device to be charged. When the charging power required by the device to be charged is less than the output power of a single charging terminal 2, the single charging terminal 2 is connected with the second input interface, and the second output interface is simultaneously connected with other devices to be charged which require charging power less than the output power of a single charging terminal 2, so that the charging power output to the device to be charged is less than or equal to the power required by the device to be charged, thereby reducing the problem that the battery of the device to be charged is damaged due to long-time use of power higher than the required power of the device to be charged. The second input interface is connected with the charging gun of the charging terminal 2 itself, or the charging terminal 2 and the second input interface are connected through a cable with connectors at both ends; the second output interface is connected with the device to be charged through a third cable, and one end of the third cable connected with the device to be charged is provided with a charging gun.

[0041] Further, the charging pile further comprises a plurality of power supply units connected with the power supply assembly, each of the power supply units is arranged adjacent to a corresponding charging terminal 2 and connected with the corresponding charging terminal 2; the power supply assembly is configured to output a first set value of voltage to the power supply units, and the power supply units are configured to output a second set value of voltage to the charging terminal 2, the first set value is greater than the second set value. Since the first set value is greater than the second set value, the power supply assembly outputs high-voltage power to the power supply units, and the power supply units output low-voltage power to the charging terminal 2. Since the lower the voltage is, the higher the current is under the condition of constant power, and the higher the current is, the greater the loss in the power transmission process is, the above-mentioned arrangement obviously shortens the transmission path of the low-voltage power, reduces the power loss in the power transmission process, and enables the charging terminal 2 to output power close to the theoretical output power without expanding the operating cost. The power supply units and the power supply assembly have the same structure, and the first set value.

[0042] The charging terminal 2 has a third input interface 6 and a third output interface 7, the third input interface 6 is configured to be connected with a power source or the charging terminal 2, and the third output interface 7 is configured to be connected with a device to be charged. The power source specifically refers to an external power grid. When the power source is connected with the third input interface 6 through a cable, and the distance between the power source and the control cabinet 1 is the same as the distance between the charging terminal 2 and the power source, this shortens the path of the power transmission from the power source to the charging terminal 2, reduces the loss in the power transmission process, and enables the charging pile to meet the charging demand at a low cost. When the third input interface 6 is connected with the charging terminal 2, this realizes the series connection of a plurality of charging terminals 2 (the plurality represents at least two), which enables the utility model to meet the high-power fast charging demand even in the case of failure of the first expansion assembly 3. The number of the charging terminals 2 is determined according to the required charging power of the device to be charged and the output power of a single charging terminal 2. For example, the device to be charged requires 150kw of charging power, and the output power of a single charging terminal 2 is 50kw, then three charging terminals 2 are connected in series, and the device to be charged is charged through the third charging terminal 2. The previous charging terminal 2 can be connected with the third input interface 6 of the next charging terminal 2 through its own charging gun, and the third output interface 7 of the last charging terminal 2 can be connected with the device to be charged through its own charging gun (the last charging terminal 2 does not need to be connected with the third input interface 6 of another charging terminal 2). Alternatively, the third input interface 6 and the charging terminal 2 can also be connected through the first cable.

[0043] The control cabinet 1 is provided with a power module, and the control cabinet 1 is provided with a fourth output interface connected with the charging terminal 2, and the power module is arranged adjacent to the fourth output interface. This shortens the power transmission path, reduces the power loss in the transmission process, and reduces the operation cost of the charging pile. The power module includes power switching elements such as MOSFET, IGBT, GaN, etc., which control the on-off of the current or the adjustment of the voltage through these semiconductor elements. The power module also includes a driving circuit such as a PWM (pulse width modulation) controller responsible for generating control signals. The power module is a prior art, and other specific structures are not described here.

[0044] The power source and the power supply assembly are connected by a first cable; wherein the first cable is provided with a heat dissipation layer, the heat dissipation layer is connected with a heat dissipation assembly, the heat dissipation layer can be a coil pipe sleeved outside the first cable, the coil pipe is filled with a working medium such as water that can carry away the heat dissipated by the first cable, the heat dissipation assembly includes a storage tank connected with the coil pipe, and a conveying pump connected with the coil pipe, the storage tank stores the working medium, both ends of the coil pipe are connected with the storage tank, the working medium in the storage tank can be conveyed to the first cable by the conveying pump, and after absorbing the heat released by the first cable, it flows back to the storage tank, the input port of the storage tank or the coil pipe is connected with a refrigeration device of the prior art, when the storage tank is a cooling tower, the cooling tower constitutes the refrigeration device; the setting of the heat dissipation layer and the heat dissipation assembly reduces the heat of the first cable, so that the power source can input higher current to the power supply assembly, thereby increasing the output current of the charging terminal 2 and improving the output power of the charging terminal 2; and / or, the first cable is provided with a plurality of insulation layers; and / or, the first cable is provided with an electromagnetic shielding layer; the insulation layer is made of a material that can reduce electromagnetic interference and has high temperature resistance and high strength, which reduces the interference of electromagnetic interference on power transmission and lays the foundation for the power source to input higher current to the power supply assembly; the electromagnetic shielding layer is made of a material that can shield electromagnetic waves, which reduces the interference of electromagnetic interference on power transmission and ensures the stable transmission of power.

[0045] The first cable includes a plurality of cable lines arranged in parallel, and the two ends of the cable line are connected with the charging terminal 2 and the power supply assembly respectively. This reduces the total resistance between the power source and the power supply assembly without increasing the size of a single cable line, reduces power loss, and improves power transmission efficiency; since the current is shared among multiple cable lines, the current density of each cable line is low, which reduces the excessive contact resistance generated by the contact points (such as joints), thereby improving the power transmission efficiency between the power source and the power supply assembly and avoiding energy loss or overheating caused by poor contact.

[0046] The first cable only includes two joints respectively located at the end of the first cable, and an isolation layer is arranged on the joint, the isolation layer is used for isolating oxygen, by reducing the number of joints, the resistance of the first cable is reduced, and by arranging the isolation layer, the problem of increasing the transmission resistance due to the oxidation of the joint is reduced, the isolation layer can be an electroplated layer, or be made of an anti-oxidation coating or an anti-oxidation material containing silver / nickel; and / or, the first cable is a flexible cable, which means that the first cable has a certain flexibility, that is, the ability to deform flexibly, compared with a hard cable, the first cable can absorb a certain ability when subjected to external vibration, thereby reducing the displacement of the first cable, and reducing the probability that the joint on the first cable is loosened due to external vibration, resulting in poor contact, increased contact resistance and blocked power transmission.

[0047] The input end of the power supply assembly is provided with a pressure-sensitive resistor, when the voltage input into the power supply assembly exceeds a predetermined limit value, the pressure-sensitive resistor will quickly respond and absorb or guide the excessive voltage to the ground, thereby preventing the voltage from continuing to rise and protecting the control cabinet 1 from damage; and / or an overvoltage protector such as a gas discharge tube or an ABB surge protector to absorb excessive voltage and provide certain voltage protection; and / or a fuse, in the case of excessive current input into the power supply assembly, the fuse will quickly melt and cut off the circuit to prevent further excessive current; and / or the control cabinet 1 is connected with a grounding wire, which provides a reliable grounding connection for the control cabinet 1, ensuring that once a leakage or contact with a live part occurs, the current can quickly flow to the ground through the grounding loop, avoiding electric shock or electrical fire; the input end of the power supply assembly and the input end of the charging terminal 2 are both provided with a filter; and / or the power lines and signal lines between the charging terminal 2 and the control cabinet 1 are arranged to avoid, which reduces electromagnetic interference and harmonic loss, ensuring stable transmission of power.

[0048] Several ≥2, filters, pressure-sensitive resistors, overvoltage protectors, fuses, etc. in this paper are prior art.

[0049] In the utility model, and / or refers to the text content located in front and / or the text content located behind, which can exist simultaneously and separately.

[0050] The utility model discloses multiple technical schemes, but does not exist to give opposite technical inspiration situation.

[0051] The principle and implementation mode of the utility model are described by applying specific examples in the utility model, and the description of the above examples is only used to help understand the method and core idea of the utility model; at the same time, according to the idea of the utility model, the specific implementation mode and application range will be changed by the general technical personnel in the field. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A charging stack facilitating power scaling, characterized by, The charging pile comprises: a control cabinet, wherein a power supply assembly connected with a power source is arranged in the control cabinet; a plurality of charging terminals, wherein each of the charging terminals is connected with the power supply assembly, and the distance between each of the charging terminals and the power supply assembly is equal; a first expansion assembly, wherein the first expansion assembly comprises a first output interface and a plurality of first input interfaces, each of the first input interfaces is connected with the first output interface, the first input interfaces are used to be connected with the charging terminals, and the first output interface is used to be connected with a device to be charged.

2. The charging stack of claim 1, wherein, The charging pile further comprises a second expansion assembly, wherein the second expansion assembly comprises a second input interface and a plurality of second output interfaces, the second input interface is connected with each of the second output interfaces, the second input interface is used to be connected with the charging terminals, and the second output interfaces are used to be connected with the device to be charged.

3. The charging stack of claim 1, wherein, The charging pile further comprises a plurality of power supply units connected with the power supply assembly, each of the power supply units is arranged adjacent to a corresponding charging terminal and connected with the corresponding charging terminal; the power supply assembly is used to output a first set value of voltage to the power supply units, the power supply units are used to output a second set value of voltage to the charging terminals, and the first set value is greater than the second set value.

4. The charging stack of claim 1, wherein, The charging terminal has a third input interface and a third output interface, the third input interface is used to be connected with the power source or the charging terminal, and the third output interface is used to be connected with the device to be charged.

5. The charging stack of claim 4, wherein, The control cabinet is provided with a power module, and the control cabinet is provided with a fourth output interface connected with the charging terminal, and the power module is arranged adjacent to the fourth output interface.

6. The charging stack of claim 1, wherein, The power source and the power supply assembly are connected through a first cable; wherein the first cable is provided with a heat dissipation layer, and the heat dissipation layer is connected with a heat dissipation assembly; and / or, the first cable is provided with a plurality of insulation layers.

7. The charging stack of claim 6, wherein, The first cable comprises a plurality of cable lines arranged in parallel, and the two ends of the cable lines are respectively connected with the power source and the power supply assembly; and / or, the first cable is provided with an electromagnetic shielding layer.

8. The charging stack of claim 6, wherein, The first cable only comprises two connectors respectively located at the end portions of the first cable, the connectors are provided with an isolation layer, and the isolation layer is used to isolate oxygen; and / or, the first cable is a flexible cable.

9. The charging stack of claim 1, wherein, The input end of the power supply assembly is provided with a pressure-sensitive resistor; and / or an overvoltage protector; and / or a fuse; and / or the control cabinet is connected with a grounding wire.

10. The charging stack of claim 1, wherein, The input end of the power supply assembly and the input end of the charging terminal are provided with filters; and / or, the power supply lines and signal lines between the charging terminal and the control cabinet are arranged to avoid.

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