一、概述：

I.General

CDHD是應(yīng)用高頻 PWM 脈寬調(diào)制技術(shù)，以 IGBT、場效應(yīng)功率管和脈寬調(diào)制集成控制器為主要部件而構(gòu)成的開關(guān)電源式多功能充電電源。它省去了笨重又有噪音的工頻變壓器，使得整機(jī)重量只有可控硅充電電源的四分之一，3KW的CDHD充電電源整機(jī)重量8公斤。另外電源還提供有多個功能模塊選配，整機(jī)采用智能冷卻，即使在最高溫的機(jī)艙內(nèi)也能保證電源可靠工作。CDHD系列電源滿足中國船級社的各種規(guī)范規(guī)則，符合船用電氣及規(guī)范的基本標(biāo)準(zhǔn)。

CDHD applies Pulse Width Modulation (PWM) technology, beingmultiple-function switching charging power supply with IGBT, MOSFET and PWMintegrated controller as main parts. Heavy power frequency transformer withnoise is not used, which makes the weight of the whole set be 1/4 of siliconcontrolled charger. The whole set of 3KW CDHD charging power supply weighs 8 kilograms.The power supply also provides several function modules for matching. The wholeset adopts smart cooling process, therefore the power supply could workreliably in engine room with the highest temperature. CDHD series power supplymeets all the specifications and rules of China Classification Society andbasic standards of marine electric standards.

產(chǎn)品型號編制方法

Methodfor Product Model Designation

本充電電源為三階段自動充電電源（恒流均衡充電-恒壓均衡充 電-浮充電）如下圖所示。對電瓶充電的全過程是先進(jìn)入均衡 充電，自動完成先恒流，后恒壓，待電流降到接近零時均衡充 電完成，令其（手動或自動）轉(zhuǎn)入“浮充”，以涓流維持電瓶在 滿充狀態(tài)。其充電詳細(xì)過程如下：

Three stages of the automatic chargingpower supply are constant-current equalizing charge, constant-voltageequalizing charge and floating charge as shown in the following figure. Thewhole process of battery charge is to enter the mode of equalizing charge firstand automatically finishes the constant-current and then constant-voltagecharge. The equalizing charge is finished when the current is near zero, andthe mode should be transferred into “Floating charge” (manually orautomatically). The trickle maintains the status of full charge. The detailedprocess of charge is as follows:

以24V鉛酸蓄電池為例，過程是：接好電池，開啟后，充電電源軟啟動，電壓從21.6V(電池放電下限值)開始上升，充電電流逐步增大到額定恒流值，充電電源進(jìn)入恒流充電過程，此后充電電壓逐漸升至28.2V（均充電壓值），此恒流充電過程一般情況下約需1～2小時；然后，充電電源進(jìn)入均衡充電過程，在此過程中，充電電流逐漸緩慢下降，電源退出恒流工作，此時電源電壓不變，進(jìn)入到恒壓均衡充電狀態(tài)，此充電過程約需4～6小時，隨著電流的進(jìn)一步減小到額定電流的十分之一時，電源自動判斷為電池已充好，電源自動轉(zhuǎn)為浮充階段，即輸出電壓將為26.4V,充電電流則進(jìn)一步減小甚至為零，在沒有外部變化情況下，此后電源一直維持這種狀態(tài)，補(bǔ)充電池的自耗電。采用這種充電方式能夠較快、均衡的對電池組進(jìn)行充電，充滿后充電電源能自動轉(zhuǎn)換到浮充，維持電池正常電壓避免出現(xiàn)電池過充，從而實(shí)現(xiàn)無人值守充電工作方式。

Take the 24V lead acid battery asan example: the process is that when the batteries are connected and turned on,soft starting of the charging power supply is finished; voltage rises from21.6V (lower limit of battery discharge); current increase steadily to ratedvalue of constant current; charging power supply enters into process ofconstant-current charge; the charge voltage gradually rises to 28.2V (averagevoltage charge voltage), and the constant current charge usually lasts for 1-2hours. Then the charging power supply enters the process of equalizing charge,and in the process the current gradually falls; the constant-current work ofpower supply ends. The power supply keeps being unchanged, and enters into thestatus of constant-voltage equalizing charge; the process lasts for 4-6 hours;as the current further falls to be 1/10 of the rated current value, the batteryis automatically regarded as fully charged, and the power supply enters thestage of floating charge, i.e. the output voltage will be 26.4V and the chargecurrent further falls to zero; then the power supply keeps the status to supplythe self-consumption. The manners enable fast and equalizing charge of battery,and the charging power supply automatically switches into status of floatingcharge to maintain the usual voltage of battery and avoid overcharging, thusthe method of charge without people’s supervision is realized.

備注：對不同種類的蓄電池其充電方式和充電電壓是不同的。

Notes: Charge methods and voltageof various types of battery are different.

本充電電源的電原理方框圖如下示：Block diagram ofelectric principle of the charging power supply is as follows:

二、技術(shù)指標(biāo)

II.Technical Index

1. 輸入電壓 ： AC110V±15%；AC220V±20%；AC380V±20%；AC440V±15%(每種輸入都可以選擇單相或三相)

1 Input voltage: AC110V±15%; AC220V±20%; AC380V±20%;AC440V±15% (single phase or three phase could be selected for each type ofinput voltage)

2. 穩(wěn)壓精度：≤1%

2 Voltage-stabilizing precision: ≤1%

3 恒流精度：≤1%

3 Constant-currentprecision: ≤1%

4 輸出電壓紋波：Vp-p≤1%

4 Outputvoltage ripple: Vp-p≤1%

5 輸出額定電壓V0：DC12V,24V,48V（可選）

5 Rated output voltage (VO): DC12V, 24V, 48V (Optional)

浮充電壓：2.2VOXN（N為電池節(jié)數(shù)）；均充電壓：2.35VOXN（N為電池節(jié)數(shù)）

Float chargevoltage: 2.2VOXN (N refers to number of batteries); average charge voltage:2.35VOXN (N refers to number of batteries)

12V電池N為6，24V電池N為12，48V電池N為24

N=6 for 12Vbattery; N=12 for 24V battery; N=24 for 48V battery

6 輸出額定電流IO：10A，20A,，30A，40A，60A（可選）

6 Rated outputcurrent IO:10A， 20A,30A,40A,60A(Optional)

7 工作效率：≥85%（額定測試）

7 Workingefficiency: ≥85% (rating test)

8 工作時間：長期

8 Workingperiod: Long term

9 冷卻方式：風(fēng)冷

9 Coolingmethod: Air cooling

10 防護(hù)等級： IP20或IP22、IP44以及客戶需求的各種防護(hù)等級

10 rotection grade: IP20 or IP22, IP44 and all protectiongrades necessary for customers

11 產(chǎn)品符合GB7061-98《船用低壓開關(guān)設(shè)備和控制設(shè)備裝置通用技術(shù)條件》和GB/T14548-93《船用半導(dǎo)體變流器通用技術(shù)條件》的相關(guān)規(guī)定，符合《鋼質(zhì)海船入級規(guī)范 》的有關(guān)規(guī)定。

11 productsmeet related provisions of GB7061-98 GeneralSpecification for Marine Low Voltage Switch Equipment and Control EquipmentDevice, GB/T14548-93 GeneralSpecification for Marine Semiconductor Converters and Rules for Classification for Sea-going Steel Ships.

12 保護(hù)功能：輸入過欠壓保護(hù)（可選）；輸出過欠壓保護(hù)；輸出過流及短路保護(hù)；過熱保護(hù)

12 ectionfunction: Input over-voltage and under-voltage protection (optional); outputover-voltage and under-voltage protection; output over-current andshort-circuit protection; overheat protection