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Emergency Power System Scheme

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AC-DC integrated system scheme

Uninterruptible power supply system scheme

Charging system scheme

Product overview

The charging system is an important part of the automobile manufacturing industry, mainly composed of batteries, generators, regulators and so on. Its main function is to charge the battery and supply power to electrical components, including all electrical equipment except the starting system. In new energy vehicles, since the battery does not have the ability to supply power to the electrical system for a long time, it needs to be continuously charged by the charging system.

Technical Requirements

1. Technical Conditions for AC Charging Piles for Electric Vehicles (NB/T 33002-2018)

2. Code for Design of Electric Vehicle Charging Station GB 50966-2014

3. Electric Vehicle Conductive Charging System Part 1 General Requirements GB/T 18487.1-2015

4. Connecting Devices for Conductive Charging of Electric Vehicles-Part 1: General Requirements GB/T 20234.1-2015

5. Connecting Devices for Conductive Charging of Electric Vehicles-Part 3: DC Charging Interface (GB/T 20234.1-2015)

6. Safety Requirements and Test Specifications for Electric Vehicle Power Supply Equipment (GB/T 39752-2021)

Product naming Charging system use

The charging system can be applied to various parking lots: public parking lots, corporate parking lots, residential parking lots, industrial park parking lots, high-speed service area parking lots, etc.

The main purpose of the charging system is to provide charging services for electric vehicles. First of all, the charging system can convert the alternating current from the power grid into direct current to meet the charging requirements of the electric vehicle battery. Secondly, when the engine is working, the charging system can also provide the required power to the electrical components. In addition, new energy vehicle power supply equipment (EVSE), including all power supply equipment connected to AC voltage and with charging plugs, can charge plug-in hybrid vehicles and pure electric vehicles.

In actual operation, since the car mainly uses direct current, the alternating current generated by the generator must be rectified and converted into direct current before output. According to the different charging speeds, the charging methods of pure electric vehicles are mainly divided into two types: AC charging and DC fast charging. The former is usually used for slow charging at night or when the rest time is long, while the latter is suitable for situations where there is an urgent need to replenish electricity, which can quickly charge electric vehicles in a short time.

Working principle of charging system

The working principle of the charging system mainly involves multiple components such as batteries, generators, and regulators. In the operation of the car, the generator is used as the main power source, which is responsible for supplying power to all electrical equipment except the starting system and charging the battery. Since the generator is driven by the engine through the belt to rotate, when the engine speed changes, the generator output voltage will also change accordingly. In order to ensure a stable voltage output, the charging system is equipped with a voltage regulator. By adjusting the excitation current of the generator, the generator can keep the output voltage stable when the speed and load change.

In addition, there are two main charging system methods for pure electric vehicles: AC charging and DC fast charging. The AC charging method is slow charging, using single-phase or three-phase AC power grid for charging; while the DC fast charging uses DC power for charging. In order to meet different charging needs, the charging system may also include a combined charging system (CCS), which can realize AC and DC charging connection with only one vehicle charging socket. At the same time, the charging state indicating device is used to display the working condition of the charging system, such as indicating whether the storage battery is in a charging or discharging state.

Technical parameters

Technical indicators Note: 1. ● Standard configuration ○ Optional configuration 2. Product dimensions are subject to the actual contract		Technical indicators Note: 1. ● Standard configuration ○ Optional configuration 2. Product dimensions are subject to the actual contract
3.5KW/7KW wall mounted AC charging station		3.5KW/7KW column type AC charging station
Product model	L-EV-3.5KW/7KW	Product model	L-EV-3.5KW/7KW
AC input voltage range (V)	220V±15%	AC input voltage range (V)	220V±15%
Frequency range (Hz)	45-60	Frequency range (Hz)	45-60
Output voltage range (V)	220±15%	Output voltage range (V)	220±15%
Rated current (A)	16A/32A	Rated current (A)	16A/32A
Maximum output power (KW)	3.5KW/7KW	Maximum output power (KW)	3.5KW/7KW
Charging interface	1	Charging interface	1
Charging operation	Swipe card/scan code	Charging operation	Swipe card/scan code
Networking methods	Standard RJ45 interface/4G/LoRa	Networking methods	Standard RJ45 interface/4G/LoRa
Display	4.3 inches/no screen	Display	4.3 inches/no screen
Monitoring platform	Offline management tool/cloud fast charging operation platform	Monitoring platform	Offline management tool/cloud fast charging operation platform
Dielectric strength	≥2000V	Dielectric strength	≥2000V
Leakage protection (mA)	30	Leakage protection (mA)	30
Protection level	IP54	Protection level	IP54
Working temperature (℃)	-20～50	Working temperature (℃)	-20～50
Storage temperature (℃)	-40～70	Storage temperature (℃)	-40～70
Interface type	GB20234.2-2015 Connection Method C	Interface type	GB20234.2-2015 Connection Method C
Measurement method	Integrated measurement/independent measurement	Measurement method	Integrated measurement/independent measurement
Reliability (MTBF)	50000 hours	Reliability (MTBF)	50000 hours
Protection function	Overvoltage short circuit, overload, leakage, surge protection	Protection function	Overvoltage short circuit, overload, leakage, surge protection
Installation method	Wall mounted	Installation method	Column
Shell material	Sheet metal	Shell material	Plastic shell
Optional accessories	Charging gun 5m	Optional accessories	Charging gun 5m
Size (mm)	Length 270 * Width 130 * Height 400	Size (mm)	271 length * 107 width * 390 height/1345 column height

Technical indicators Note: 1. ● Standard configuration ○ Optional configuration 2. Product dimensions are subject to the actual contract		Technical indicators Note: 1. ● Standard configuration ○ Optional configuration 2. Product dimensions are subject to the actual contract
240KW integrated dual port DC charging station		240KW integrated dual port European standard DC charging station
Product model	L-EV-240KW	Product model	L-EV-240KW/European standard
AC input voltage range (V)	380±15%	AC input voltage range (V)	380±15%
Frequency range (Hz)	45-60	Frequency range (Hz)	45-60
Output voltage range (V)	200-750	Output voltage range (V)	200-750
Rated current (A)	250	Rated current (A)	200
Maximum output power (KW)	240	Maximum output power (KW)	240
Charging interface	2	Charging interface	2
Charging operation	Swipe card/scan code	Charging operation	Swipe card/scan code
Voice (dB)	＜65	Voice (dB)	＜65
Check the flow of semen hall	≤±1％	Check the flow of semen hall	≤±1％
Stable voltage accuracy	≤±0.5%	Stable voltage accuracy	≤±0.5%
Output current error	≤±1%	Output current error	≤±1%
Output voltage error	≤±0.5%	Output voltage error	≤±0.5%
Protection level	IP54	Protection level	IP54
Working temperature (℃)	-20～50	Working temperature (℃)	-20～50
Storage temperature (℃)	-20～70	Storage temperature (℃)	-20～70
Human machine display	7-inch color touch screen	Human machine display	7-inch color touch screen
Measurement and billing	DC energy meter	Measurement and billing	DC energy meter
Reliability (MTBF)	50000 hours	Reliability (MTBF)	50000 hours
Protection function	Overvoltage short circuit, overload, leakage, surge protection	Protection function	Overvoltage short circuit, overload, leakage, surge protection
Installation method	Overall floor standing	Installation method	Overall floor standing
Shell material	Sheet metal	Shell material	Sheet metal
Optional accessories	4G wireless communication, charging gun 7m/10m	Optional accessories	4G wireless communication, charging gun 7m/10m
Size (mm)	Length 850 * Width 700 * Height 1800	Size (mm)	Length 850 * Width 700 * Height 1800

Model specifications

The company's product specifications and models are complete, which can meet the user's various specifications and power design requirements. The following parts of the host specifications are for reference only. Please consult customer service personnel for customized models and specifications.

Total rated output power	Rated input voltage	Rated input current	Suggest using electrical cables
3.5KW	AC220V	16A	ZR-YJV-3*6
7KW	AC220V	32A	ZR-YJV-3*10
14KW	AC220V	64A	ZR-YJV-3*16
30KW	AC380V	45A	ZR-YJV-425+116
60KW	AC380V	91A	ZR-YJV-435+116
90KW	AC380V	136A	ZR-YJV-470+135
120KW	AC380V	182A	ZR-YJV-495+150
160KW	AC380V	243A	ZR-YJV-4120+170
240KW	AC380V	365A	ZR-YJV-4185+195

Technical features

1) Adopt integrated design, compact overall structure, convenient and quick installation, low power consumption and high charging efficiency;

2) The protection grade of the charging pile is IP65, which can meet the normal use in rainy days, sand and dust and other bad weather;

3) The front panel of the charging pile is equipped with an anti-sunlight LCD touch screen, with excellent visual experience and friendly operation interface; the charging pile is equipped with a surge protector, which can provide effective lightning protection for the charging pile equipment;

4) The residual current protector is configured in the charging pile, which can effectively protect the personal safety of users;

5) The charging pile has a fault alarm function. After detecting a problem with the charging circuit or charging pile equipment, it will immediately stop charging and actively send fault information to the monitoring system;

6) The charging pile is equipped with an emergency stop button, press the emergency stop button, disconnect the power output, and provide emergency protection;

7) The charging pile has protection functions such as input undervoltage, input overvoltage, output short circuit, output overvoltage, overload, lightning protection, leakage prevention, insulation monitoring, emergency shutdown, etc., which can ensure the reliability and safety of charging;

8) The charging pile interface is designed in strict accordance with the new national standard and can be compatible with all national standard electric vehicles on the market;

9) The cold-rolled steel plate used in the body shell has high mechanical strength, anti-corrosion surface spray treatment, beautiful appearance and longer service life;

10) The front panel is equipped with IC card reader, which supports the functions of card charging and payment;

11) The front panel is provided with a running status indicator to clearly indicate the equipment status;

12) Adopt special charging cables and charging guns that meet the requirements of national standard GB/T20234.3, and the standard length is 5 meters;

13) Configure Ethernet/CAN and other wired communication interfaces, and GPRS/3G (optional) wireless communication interface;

14) The intelligent electric energy meter is configured, and the measurement accuracy reaches level 1. After CMC, it fully complies with GB/T 17215.321-2008 standard.

Selection scheme

1. According to the charging method

(1) AC charging pile

The AC charging pile, commonly known as "slow charging", is fixedly installed outside the electric vehicle and connected to the AC power grid to provide AC power for the on-board charger of the electric vehicle. The AC charging pile only provides power output and has no charging function. The on-board charger needs to be connected to charge the electric vehicle. It is equivalent to just a control power supply.

(2) DC charging pile

The DC charging pile is commonly known as "fast charging". It is a power supply device that is fixedly installed outside the electric vehicle and connected to the AC power grid to provide DC power for the power battery of the non-vehicle electric vehicle. It can directly output direct current to charge the battery of electric vehicles. The output voltage and current can be adjusted in a large range, which can provide sufficient power to realize fast charging of electric vehicles. The charging speed of the DC charging pile is faster, so it is generally installed at the charging station beside the highway.

(3) AC/DC integrated charging pile

The fast charging pile equipment adopts an integrated AC and DC structure. Both DC charging and AC charging can be realized. When there are many charging services during the day, DC mode is used for fast charging. When there are few users in the charging station at night, AC charging can be used for slow charging operation. Touch and keyboard are used for mutual backup control. The touch screen and keyboard are designed to be rainproof and dustproof. Emergency stop switch for emergency shutdown; It is equipped with charging connector placement slot, which can be waterproof.

2. According to installation location

(1) Public charging piles. Construction of charging piles in public parking lots combined with car parking spaces to provide charging services for social vehicles.

(2) Special charging pile. The construction unit has its own parking lot, which is the charging pile used by the internal personnel of the unit.

(3) Self-use charging pile. Building in a personal garage to provide charging piles for private users.

The above is to introduce different types of charging piles in different ways. Below we mainly introduce the characteristics of charging piles divided according to charging methods.

The relevant clauses in GB/T 51313-2018 "Technical Standard for Engineering of Decentralized Charging Facilities for Electric Vehicles" are as follows: 6.1.5 The decentralized charging facilities built in the newly-built garage shall be centrally arranged in the same fire compartment and shall meet the following requirements:

1 arranged in the first floor of the garage 1. two fire resistance rating or when set in the underground or semi underground, should be arranged in the first floor of the underground garage, should not be arranged in the underground building four floors and below.

2 Set up independent fire prevention units, and the maximum allowable building area of each fire prevention unit shall comply with the provisions of the table.

The above is to introduce different types of charging piles in different ways. Below we mainly introduce the characteristics of charging piles divided according to charging methods.

2 Set up independent fire prevention units, and the maximum allowable building area of each fire prevention unit shall comply with the provisions of the table.

Table 6.1.5 Maximum allowable building area of fire prevention unit in centralized charging facility area (m2)

Fire resistance rating	Single story car garage	Multi story car garage	Underground garage or high-rise garage
First and second levels	1500	1250	1000

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0551-65317588

Telephone:0551-65317588,65323322
Fax: 0551-65313339

E-mail:hflx88@163.com
Address:No.61, Yulan Avenue, High-tech Zone, Hefei City

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