CN1886709A - 计算机部件加热装置和方法 - Google Patents
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Abstract
本发明提供了一种连接至脉冲宽度调制(PWM)功率控制器的计算机部件加热器,所述功率控制器可以根据向加热器供电的电源的电压自动地改变占空比。
Description
技术领域
本发明涉及一种计算机部件加热的装置和方法。具体地,其涉及一种计算机部件加热的自动装置和方法。
背景技术
与台式计算机不同,便携式计算设备可能暴露在各种恶劣的工作环境中,例如潮湿环境、碰撞和温度环境等。
在计算机的部件中,硬盘和LCD显示器对于低温特别敏感;
对硬盘来说,热胀冷缩会影响读写头跟硬盘盘片之间非常小的空间,或者当盘片的转速达到7200rpm时,热胀冷缩还会影响盘片的平衡。这些变化会降低读取质量甚至会导致读写头或者盘片表面的损坏。
对LCD显示器来说,液晶的特性通常是温度相关的,在温度极限值时液晶的这种特性将导致显示质量下降。
此外,便携计算机中的一些化学电池同样也具有适宜的工作/存储温度范围;例如,锂离子电池和镍/金属氢化物电池典型推荐工作于-20℃到+40℃之间。
对于上面的问题,该领域内一个公知的解决方案就是在计算机部件的内部提供加热器。当温度低于温度极限值达到最长的时间周期时(例如,16个小时,这个时间间隔通常是一个工作日的结束和下个工作日的开始),该加热器便会被打开。
对于车载设备,加热器还需要有电池保护临界点,这样当给加热器供电的车载电池的电压随着时间消耗至低于某个电压值时,加热器便会关闭以保护电池,防止随后无法发动汽车。
然而,需要考虑的电池电源的质量和温度的严苛程度是一些无法预测的量,这样上述的加热器便是不精确的解决方案。
本发明的目的就是要解决上述问题。
发明内容
本发明提供了一种工作连接至脉冲宽度调制(PWM)功率控制器的计算机部件加热器,所述功率控制器可以根据加热器的电源电压自动的改变占空比。
有利的是,使用PWM功率控制器可通过调整占空比,在很大程度上与该电源无关地控制该加热器的输出。
第一个方面,本发明提供了一种工作连接至PWM功率控制器的计算机部件加热器,其在权利要求1中进行了声明。
第二个方面,本发明提供了一种加热计算机部件的方法,其在权利要求15中进行了声明。
本发明的其它特征均在从属权利要求中进行了定义。
将通过示例,并参考附图说明本发明的各实施例。
附图说明
图1是根据本发明的实施例,工作连接至PWM功率控制器的计算机部件加热器的示意图。
具体实施方式
参考图1,公开了一种计算机部件加热器工作连接至脉冲宽度调制(PWM)功率控制器的装置100。
加热器120工作连接至PWM功率控制器110。
在本发明的实施例中,加热器120包括两个加热单元(122,124)和温度传感器126,例如热敏电阻。
每个加热单元(122,124)的电阻是10欧姆,±10%,这样加热器的电阻就近似为20欧姆。与该领域公知的加热器(典型值为70欧姆)相比,这样的低电阻有利于产生更高的功率消耗。然而,本领域的技术人员清楚,任何低于70欧姆的阻值都可以实现上述的优点,例如从10欧姆到50欧姆。
PWM功率控制器110包括PWM控制信号112,该PWM控制信号通过开关装置132来打开或者关闭来自电源130的供电,装置132通常是功率晶体管。
电源130可以通过需要加热的计算机部件使用,但是最好是独立地使用,这样不管那些与其相连的计算机部件当前是否有电,PWM功率控制器110都能够控制从电源130到加热器120的供电。
PWM功率控制器110的使用中还会接收输入114和输入116的信号,输入114用来指示电源130的电压,输入116用来指示由温度传感器126所测得的温度。
在本发明的实施例中,PWM功率控制器110利用电源130的电压根据PWM电源控制机制来决定占空比(电源‘打开’时间的百分比,或者脉冲宽度)。通过这种方式可以把占空比跟电源电压联系联系在一起,PWM功率控制器110在使用过程中根据为加热器120供电的电源130的电压自动的改变占空比。
下面的表1是对照表实例,该表用于控制作为车载电池电压(例如电源130)和加热器120输出(功率消耗)函数的占空比,后者通常取决于测得的温度(例如,当前温度和计算机部件的最小规范温度的差)或者用户偏爱(例如,最大功率):
加热器瓦特 | 车载电池电压 | ||||||||||||||
9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15 | 15.5 | 16 | 16.5 | |
0 | DC=0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
1.5 | 33% | 30% | 27% | 25% | 23% | 21% | 19% | 18% | 16% | 15% | 14% | 13% | 12% | 12% | 11% |
2 | 44% | 40% | 36% | 33% | 30% | 28% | 26% | 24% | 22% | 20% | 19% | 18% | 17% | 16% | 15% |
2.5 | 55% | 50% | 45% | 41% | 38% | 35% | 32% | 30% | 27% | 26% | 24% | 22% | 21% | 20% | 18% |
3 | 66% | 60% | 54% | 50% | 45% | 42% | 38% | 36% | 33% | 31% | 29% | 27% | 25% | 23% | 22% |
3.5 | 78% | 70% | 63% | 58% | 53% | 49% | 45% | 41% | 38% | 36% | 33% | 31% | 29% | 27% | 26% |
4 | 89% | 80% | 73% | 66% | 60% | 56% | 51% | 47% | 44% | 41% | 38% | 36% | 33% | 31% | 29% |
4.5 | 100% | 90% | 82% | 74% | 68% | 63% | 58% | 53% | 49% | 46% | 43% | 40% | 37% | 35% | 33% |
表1用于控制作为车载电池电压和加热器功率函数的占空比的对照表实例
作为选择,也可以使用占空比、电源电压和加热器输出(或者当前温度与期望温度的差值)关系的参数描述。
PWM功率控制器110通过比加热单元(122,124)热循环(热和冷却)频率更高的开/关振荡频率来驱动信号112,从而控制加热器120的输出(瓦特)。因此,占空比的任何变化都具有控制加热单元的时间平均功率的作用。降低振荡频率也是可能的,但是由于热循环是其因数,所以加热单元的温度会在需要的均值附近明显的变化,并且在峰值温度时可能发生损害。
大量可操作参数的典型默认值会提供给PWM功率控制器用于其编程,这些参数包括:
i.激活加热器120的温度门限;
ii.激活/停止加热器120的温度门限的迟滞程度;
iii.最大的加热持续时间;和
iv.电池保护电压门限。
另外,上述所有操作参数都可以根据用户的偏好来修改。
迟滞量定义了计算机部件所需的加热范围,下界是激活加热器120的温度门限,上界是在不必要加热部件之前停止加热器的温度门限。例如,硬盘的迟滞窗口可能是从5摄氏度到7摄氏度,这样就可以保持硬盘的平均温度比最小的规范温度4摄氏度高两度。
很清楚,加热单元(122,124)要放置在计算机部件(例如,LCD显示器,硬盘或者Li/NiMH电池)的内部或者跟其热接触,PWM功率控制器即可以跟计算机部件相分离,也可以在计算机部件中包含所述的PWM功率控制器。通过多个输入和/或输出,可以设想用一个PWM功率控制器来控制多个加热器。
还提供了一种加热计算机部件的方法,典型的步骤有;
i.将计算机部件加热器可操作地连接至脉冲宽度调制(PWM)功率控制器;和
ii.功率控制器根据给加热器供电的电源电压自动地改变占空比。
可以理解,计算机部件加热器如上所述可操作地与PWM功率控制器连到一起,可以至少产生一条或多条下述的优势:
i.根据电源的电压来控制加热器;
ii.可编程的加热器控制可以实现包括用户的偏好,从而避免在不同气候下改动硬件。
iii.自适应控制器的使用可以消减在维持目标温度时部件变化所带来的影响。
Claims (16)
1.一种可操作地连接至脉冲宽度调制(PWM)功率控制器的计算机部件加热器,所述的功率控制器可以根据为所述加热器供电的电源的电压来改变PWM占空比。
2.如权利要求1所述的装置,其中,PWM占空比通过对照表与加热器电源的电压关联。
3.如上述任一权利要求所述的装置,其中,功率控制器可操作地根据用户偏爱的加热器功率消耗来进一步改变占空比。
4.如上述任一权利要求所述的装置,其中,功率控制器可以根据依赖于加热器瓦数的温度来进一步改变占空比。
5.如上述任一权利要求所述的装置,其中,加热器包括两个加热单元,其总电阻值在10至50欧姆之间。
6.如上述任一权利要求所述的装置,其中,所述PWM功率控制器可操作地控制加热器的电源,而不管目前与其联的计算机部件是否有电。
7.如上述任一权利要求所述的装置,该装置是可操作的,用户可以选择温度门限来激活加热器。
8.如上述任一权利要求所述的装置,该装置是可操作的,用户可以在激活和停止加热器的温度门限之间选择迟滞度。
9.如上述任一权利要求所述的装置,该装置是可操作的,用户可以选择最大的加热持续时间。
10.如上述任一权利要求所述的装置,该装置是可操作的,用户可以选择电池保护电压门限。
11.如上述任一权利要求所述的装置,其中,加热器的电源包括车载电池。
12.根据上述任一权利要求的一种连接至PWM功率控制器的计算机部件加热器,其中,计算机部件是下面的任意一种:
i.硬盘;
ii.LCD显示器;和
iii.电池。
13.如权利要求12所述的一种连接至PWM功率控制器的计算机部件加热器,其中,计算机部件包括加热器。
14.如权利要求12到13任一条所述的一种连接至PWM功率控制器的计算机部件加热器,其中,计算机部件包括PWM功率控制器。
15.一种加热计算机部件的方法,特征在于以下步骤:
i.将计算机部件加热器工作连接至脉冲宽度调制(PWM)功率控制器;和
ii.功率控制器根据给加热器供电的电源电压自动地改变占空比。
16.如权利要求1所述的并根据附图进行充分说明的装置。
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GB0327453.7 | 2003-11-26 | ||
GBGB0327453.7A GB0327453D0 (en) | 2003-11-26 | 2003-11-26 | Apparatus and method of computer component heating |
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US (1) | US20070272678A1 (zh) |
EP (1) | EP1690150A1 (zh) |
KR (1) | KR20060086442A (zh) |
CN (1) | CN1886709A (zh) |
CA (1) | CA2545095A1 (zh) |
GB (1) | GB0327453D0 (zh) |
WO (1) | WO2005052713A1 (zh) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102004505A (zh) * | 2010-11-03 | 2011-04-06 | 中航华东光电有限公司 | 液晶显示器低温加热控制模块和方法 |
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US9736887B2 (en) | 2011-10-21 | 2017-08-15 | Getac Technology Corporation | Method and device for heating electronic component and electronic apparatus using the same |
CN109976413A (zh) * | 2019-05-05 | 2019-07-05 | 哈尔滨工业大学(深圳) | 一种光学显微镜温度控制系统与方法 |
WO2021189324A1 (zh) * | 2020-03-25 | 2021-09-30 | 深圳市大疆创新科技有限公司 | 电池加热方法、充电装置、系统、电池和可移动平台 |
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TWI425352B (zh) * | 2008-02-01 | 2014-02-01 | Pegatron Corp | 可攜式電腦及其預加熱開機方法 |
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US8324538B2 (en) | 2009-11-10 | 2012-12-04 | Honeywell International Inc. | Systems and methods for limiting input power and RMS input current drawn from a DC power source |
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US20150330648A1 (en) * | 2014-05-19 | 2015-11-19 | Lennox Industries Inc. | Hvac system, an hvac controller and a method of heating an lcd display of an hvac controller |
RU2637585C2 (ru) * | 2016-01-20 | 2017-12-05 | Акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" | Способ эксплуатации литий-ионной аккумуляторной батареи в составе космического аппарата негерметичного исполнения |
RU2625173C1 (ru) * | 2016-01-20 | 2017-07-12 | Акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" | Способ эксплуатации литий-ионной аккумуляторной батареи в составе космического аппарата негерметичного исполнения |
US11770876B2 (en) * | 2017-05-09 | 2023-09-26 | Phillips & Temro Industries Inc. | Heater control system |
CN107807696B (zh) * | 2017-09-22 | 2021-02-02 | 上海卫星工程研究所 | 星上加热器精密温控方法 |
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-
2003
- 2003-11-26 GB GBGB0327453.7A patent/GB0327453D0/en not_active Ceased
-
2004
- 2004-08-19 EP EP04766548A patent/EP1690150A1/en not_active Withdrawn
- 2004-08-19 KR KR1020067010304A patent/KR20060086442A/ko not_active Application Discontinuation
- 2004-08-19 CA CA002545095A patent/CA2545095A1/en not_active Abandoned
- 2004-08-19 WO PCT/EP2004/051849 patent/WO2005052713A1/en not_active Application Discontinuation
- 2004-08-19 US US10/580,783 patent/US20070272678A1/en not_active Abandoned
- 2004-08-19 CN CNA2004800348828A patent/CN1886709A/zh active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102004505A (zh) * | 2010-11-03 | 2011-04-06 | 中航华东光电有限公司 | 液晶显示器低温加热控制模块和方法 |
CN102681571A (zh) * | 2011-03-15 | 2012-09-19 | 神基科技股份有限公司 | 加热电路、电子装置及于低温环境进入工作模式的方法 |
CN102681571B (zh) * | 2011-03-15 | 2015-02-04 | 神基科技股份有限公司 | 加热电路、电子装置及于低温环境进入工作模式的方法 |
US9736887B2 (en) | 2011-10-21 | 2017-08-15 | Getac Technology Corporation | Method and device for heating electronic component and electronic apparatus using the same |
CN103092295A (zh) * | 2011-11-02 | 2013-05-08 | 神讯电脑(昆山)有限公司 | 电子元件的加热方法与装置以及电子装置 |
CN103092295B (zh) * | 2011-11-02 | 2016-04-13 | 神讯电脑(昆山)有限公司 | 电子元件的加热方法与装置以及电子装置 |
CN105684284A (zh) * | 2013-10-06 | 2016-06-15 | 阿巴米纳博实验室有限责任公司 | 利用pwm的电池补偿系统 |
CN109976413A (zh) * | 2019-05-05 | 2019-07-05 | 哈尔滨工业大学(深圳) | 一种光学显微镜温度控制系统与方法 |
WO2021189324A1 (zh) * | 2020-03-25 | 2021-09-30 | 深圳市大疆创新科技有限公司 | 电池加热方法、充电装置、系统、电池和可移动平台 |
Also Published As
Publication number | Publication date |
---|---|
WO2005052713A1 (en) | 2005-06-09 |
CA2545095A1 (en) | 2005-06-09 |
EP1690150A1 (en) | 2006-08-16 |
GB0327453D0 (en) | 2003-12-31 |
KR20060086442A (ko) | 2006-07-31 |
US20070272678A1 (en) | 2007-11-29 |
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