| 摘要 |
An active thermal management device and method are disclosed, in which a phase change material unit, comprising one or more phase change material arranged in thermally in series or parallel, is connectable to a source of thermal energy, such as a group of LEDs at a first operating condition. Thermal energy from the source of thermal energy is stored in the phase change material unit. The phase change material unit is connectable to a sink of thermal energy, such as a second group of LEDs at a second operating condition. The thermal energy stored in the phase change material unit may be re-used by connecting the sink of thermal energy. In one embodiment, the first operating condition includes a supply voltage of 15V, and the second operating condition includes either no supply voltage, or a lower supply voltage of 9V, such that excess heat from the first group of of LEDs, which may be over-temperature, can be re-used to pre-heat the second group of LEDs, thereby improving the thermal matching and thus optical matching. |
