额定电压源测试.docVIP

Battery Pack Test based on UL 1950 AND UL 2054 Limited Power Source Test: (sub-clause 2.11 of UL1950) 额定电压源测试 It is to evaluate if the Battery Pack is the Limited Power Source. A 评估如果将Battery Pack当作一个额定电压源来看. 一台Notebook PC的电源 Notebook PC supplied by the Limited Power Source can waive the 由此额定的电压源(Battery Pack)来提供,此额定的电压源(Battery Pack)在防火上的 requirement of Fire Enclosure. It’s determined by varying the load 要求可以不予重视(在此项测试),而是要变动一个负载阻抗,使输出从开路到短路(RL≒0) impedance from open circuit to short circuit. And the fully charged Battery Pack 的情况来决定.此Battery Pack必须遵循下列的要求(在此项测试): should comply with the following requirements: The maximum output current after 60 seconds shall be less than or equal to 8.0 A (Max. Isc≦8.0 A), 在60秒后,调整负载使最大输出电流必须小于或等于8.0A and The power output shall be less than 5 times the open circuit voltage (Max. VA≦ 5 x Uoc), measured at the end of a 60-second period. 在60秒内测量输出端,此时输出功率必须小于5 x 开路电压. (RL≒∞) (The instrument setup is as shown in Figure 1.) Short Circuit / Rapid Discharge Test: (sub-clause 4.3.21 of UL1950) 短路及快放测试 The fully charged Battery Pack is short- circuited by connecting the positive and 将一充饱电的Battery Pack之正、负端连接起来(短路), 如此Battery Pack将会放电至 negative terminals of the Battery Pack. The Battery Pack is to discharged until a fire 起火、爆炸,或者是完全地放电完毕, Battery Pack外壳的温度会回复到周遭的温度。 or explosion happened, or until it’s completely discharged and the Battery Pack case temperature has returned to near ambient temperature. If the overcurrent or thermal protective device that has got the UL recognized 在此项测试,如果过电流或温度保护的装置是得到UL认证合格的,此类保护装置 approval actuated during the test, the test is repeated with the Battery Pack 将会启动.重复此项试验, Battery Pack加上一最大负载(即不会引起保护装置之启动) connected to the maximum load that does not cause the protective device to function. During the test, the Battery Pack shall not explode or get fire. And maximum 测试期间(Battery Pack+最大负载),不能有爆炸、起火,而且外部表面的温度 temperature on the exterior surface of casing shall not exceed 150℃.