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Liquid-cooled cables for high-power charging piles

GB liquid-cooled charging gun specifications


GB liquid-cooled charging gun specifications

GB20234.3-2015 标准液冷充电枪系统) ( GB20234.3-2015 standard liquid-cooled charging gun system)

Luoyang Zhengqi Machinery Co., Ltd.

6 June 2019

简介 1. Introduction

New energy electric vehicles have no exhaust emissions and are environmentally friendly. It is an inevitable trend to replace fuel vehicles. At present, the two main factors that affect the development of new energy electric vehicles are: battery life and charging time. 150km 提升到了 400km ,续航里程短的问题基本上得到了解决;但是,充电用时长的问题还没有解决。 With the continuous development of power battery research and technology, the range of new energy electric vehicles has been increased from 150km to 400km , and the problem of short range has been basically solved; however, the problem of charging time has not been solved.

GB20234.3-2015 标准充电枪上标配的干式集成线缆外径小于 40mm 软体导线 DC+ DC- 的截面积是 70mm 2 ,它标称能够承载的最大电流是 250A At present, the external diameter of the dry-type integrated cable that is standard on the GB20234.3-2015 standard charging gun is less than 40mm . The cross-sectional area of the soft conductors DC + and DC- is 70mm 2. It is nominally capable of carrying a maximum current of 250A . 250A 的电流指标达不到,根据市场反馈的信息,在实际使用过程中它能够承载的安全电流是 180A The fact is that the current index of 250A cannot be reached. According to market feedback, the safe current it can carry in actual use is 180A . , 它不能够承载大电流,若要承载 200A 的电流连续工作,也会导致温度过高,致使充电桩控制系统高温报警而不能正常工作。 Since the charging process heat dry soft wire cable generated not well dispersed, and therefore, it is not capable of carrying large currents, the current carrying 200A to continuous operation, can lead to high temperature, causing the charging control system pile High temperature alarm does not work.

To promote and develop new energy electric vehicles well, the problem of fast charging must be solved. To solve the fast charging problem, a high-power DC charging pile is required. 300kw 500kw 之间,输出直流电流 300 500A 之间。 At present, domestically designed high-power DC charging piles have a power between 300kw and 500kw and output a DC current between 300 and 500A . The high-power DC charging pile is composed of a power source, a charging gun, and a liquid-cooled cable connecting the charging pole power source and the charging gun.

39mm ,符合人体工程 方便使用。 The liquid-cooled cable configured for the high-power DC charging pile is an integrated cable with an outer diameter of 39mm , which is ergonomic and easy to use. DC+ DC- 各一根,还有多根信号线。 Contains liquid-cooled cable DC +, DC- each one, there are a plurality of signal lines. DC- 液冷电缆的结构相同,它的一端是电极,该电极连接大功率直流充电桩电源;它的另一端是液冷充电枪 的端子, 液冷充电枪 DC+ DC- 的端子的内部是空腔结构,它和 液冷线缆密封连接。 The structure of the DC + and DC- liquid-cooled cables is the same. One end is an electrode, which is connected to a high-power DC charging pile power source. The other end is a terminal of the liquid- cooled charging gun . The terminals of the liquid-cooled charging gun DC + and DC- The interior is a cavity structure, which is hermetically connected to the liquid-cooled cable.

45# 变压器油。 The coolant uses 45 # transformer oil. 45 ℃不会结冰,,它的燃点是 146 ℃,绝缘,导热效果好。 It will not freeze at minus 45 ℃, and its ignition point is 146 ℃, which has good insulation and thermal conductivity. DC+ DC- 端子的空腔底部,对充电枪 DC+ DC- 的端子和液冷线缆的软体导线进行冷却,循环流动的冷却液带走充电枪 DC+ DC- 的端子和液冷线缆的软体导线在充电过程中产生的热,冷却液回到冷却系统冷却后循环使用。 Inside the liquid-cooled cable, through the circulating cooling liquid, the coolant passes through the soft-wire of the liquid-cooled cable and directly reaches the bottom of the cavity of the DC + and DC- terminals of the charging gun . The soft wire of the liquid-cooled cable is used for cooling. The circulating coolant takes away the DC + and DC- terminals of the charging gun and the heat generated by the soft wire of the liquid-cooled cable during the charging process. use. DC+ DC- 的端子和液冷线缆的软体导线在充电过程中安全可靠的工作,不会因温度过高而酿成事故。 Ensure that the terminals of the charging gun DC + and DC- and the software wires of the liquid-cooled cable work safely and reliably during the charging process, and will not cause accidents due to excessive temperature.

GB20234.3-2015 标准的基础上,对其充电枪,电缆采用液冷技术进行冷却以后,使其充电电流由标称的 250A ,可以实际提升到 500A ,并能安全长期地工作,其性能提升以后,可以有效的缩短充电时间,解决新能源电动汽车充电用时长的问题。 Charging gun was cooled cable system, based on a standard basis GB20234.3-2015, its charging gun, after the cable with liquid cooling and cooling and a nominal charging current 250A, may actually raised to 500A, and It can work safely and for a long time. After its performance is improved, it can effectively shorten the charging time and solve the problem of long charging time for new energy electric vehicles.

大功率国标液冷充电系统 2.High power national standard liquid cooling charging system

大功率国标液冷充电系统组成 2.1 Composition of high power national standard liquid cooling charging system

The composition of the high-power liquid-cooled charging system is detailed in the table below:

Composition of high-power liquid-cooled charging system

system name

System composition

Remark

High-power liquid-cooled charging system

Liquid-cooled charging gun

GB20234.3-2015 In accordance with GB20234.3-2015

Liquid-cooled cable

GB20234.3-2015 充电枪 Match GB20234.3-2015 charging gun

Liquid cooling source

Oil pump

tank

heat sink

Coolant

# 变压器油(零下 45 °不会结冰) 45 #Transformer oil (minus 45 ° will not freeze)

大功率国标液冷系统性能指标 2.2 Performance Index of High Power National Standard Liquid Cooling System

Serial number

Performance

Parameter value

1

Electrical performance

1.1

Rated voltage

1000V DC

1.2

Rated current

400A

1.3

rated power

400KW

1.4

Withstand voltage

,功率孔位与信号孔位之间 3000V AC between power hole and signal hole

信号孔位之间 500V AC signal between the holes

1.5

Insulation resistance

Ω 500M Ω 500V DC ( 500V DC )

2

Mechanical behavior

2.1

Mechanical life

10,000 times

2.2

Locking force

200N

3

Environmental performance

3.1

Use ambient temperature

50 -30 50

3.2

Operating temperature

90 -30 90

3.3

surface temperature

90 ℃(实际测试≤ 55 ℃) Contacts ≤ 90 ℃ (actual test ≤ 55 ℃)

55 Hand holding position ≤ 55

3.4

Protection class

IP54 Plug and dust cover: IP54

IP55 Plug and socket mating: IP55

4

Liquid-cooled cable

4.1

The maximum length

10m

4.2

Cable outer diameter

39mm

4.3

Power line specifications

² 35mm ²

5

Cooling circuit

5.1

Coolant

# 变压器油(零下 45 ℃不会结冰) 45 #Transformer oil (minus 45 ℃ will not freeze)

5.2

/ 内径 Inlet / outer diameter

8/ ф 6 ф 8 / ф 6

5.3

/ 内径 Inlet / outer diameter

8/ ф 6 ф 8 / ф 6

5.4

There are two types of electrodes (terminals) connected to the power source of the charging pile for users to choose from.

Special liquid-cooled terminal


5.5

Cooling circuit

DC+,DC- 构成单独的冷却回路,互不干扰 Each special liquid-cooled terminal is provided with a liquid inlet and a liquid outlet at the same time. DC +, DC- constitute separate cooling circuits, which do not interfere with each other.

6

Liquid cooling source

6.1

Rated voltage

220V AC

6.2

rated power

550W

6.3

Working pressure

10bar

6.4

flow

8L / min

6.5

Cooling fan power

90W

6.6

noise

60 分贝 60 dB

6.7

Features

Coolant working pressure monitoring, coolant flow monitoring, coolant temperature monitoring; low pressure alarm, overpressure alarm, shutdown alarm, coolant temperature too high alarm

6.8

* * 高) Size (length * width * height)

550mm * 200mm * 600mm

6.9

Communication interface with charging pile

RS485

The special liquid-cooled electrode (terminal) connected to the power source of the charging pile has two structures for users to choose from:


Structure one



Structure two


contact us

Contact: Zang Chongqing

Mobile: 13938960088

Phone: (0379) 62267825

Email: zhengqijixie@126.com

Address: North of Shuikou Village, Bishan Town, Old City, Luoyang