如何確定Android電池的健康狀況？

Question

我不是在談論如何讀取價值。

相反，我對如何設置BatteryManager.EXTRA_HEALTH的值感興趣。

它是否來自固件？製造商具體？

什麼決定了這些值？

int BATTERY_HEALTH_COLD 
int BATTERY_HEALTH_DEAD 
int BATTERY_HEALTH_GOOD 
int BATTERY_HEALTH_OVERHEAT 
int BATTERY_HEALTH_OVER_VOLTAGE 
int BATTERY_HEALTH_UNKNOWN 
int BATTERY_HEALTH_UNSPECIFIED_FAILURE 

感謝， 西蒙

Answer 1

鋰離子電池具有跟蹤和報告健康簡單的機載計算機;狀態指示器是標準化的，但觸發它們由電池報告的條件由電池製造商確定。

Answer 2

通過使用此代碼，你可以得到關於電池信息..

private BroadcastReceiver battery_receiver = new BroadcastReceiver() 
{ 
    @Override 
    public void onReceive(Context context, Intent intent) 
    { 
     boolean isPresent = intent.getBooleanExtra("present", false); 
     String technology = intent.getStringExtra("technology"); 
     int plugged = intent.getIntExtra("plugged", -1); 
     int scale = intent.getIntExtra("scale", -1); 
     int health = intent.getIntExtra("health", 0); 
     int status = intent.getIntExtra("status", 0); 
     int rawlevel = intent.getIntExtra("level", -1); 
     int level = 0; 
     String temp=null; 

     Bundle bundle = intent.getExtras(); 

     Log.i("BatteryLevel", bundle.toString()); 

     if(isPresent) 
     { 
      if (rawlevel >= 0 && scale > 0) { 
       level = (rawlevel * 100)/scale; 
      } 

      String info = "Battery Level: " + level + "%\n"; 

      info += ("Technology: " + technology + "\n"); 
      info += ("Plugged: " + getPlugTypeString(plugged) + "\n"); 
      info += ("Health: " + getHealthString(health) + "\n"); 
      info += ("Status: " + getStatusString(status) + "\n"); 
      info += ("Temp: "+getTempStatus(temp,intent)+"\n"); 

      setBatteryLevelText(info + "\n\n" + bundle.toString()); 
     } 
     else 
     { 
      setBatteryLevelText("Battery not present!!!"); 
     } 
    } 
}; 
private void registerBatteryLevelReceiver(){ 
    IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED); 

    registerReceiver(battery_receiver, filter); 
} 

Answer 3

更具體：電池運行狀況由驅動程序（內核）來確定。所述驅動程序通過sys文件系統導出信息（確切地說，/ sys/class/power_supply）。 Android守護進程健康狀態（從KK開始，4.4.x）會獲取此信息，並在其上實現IBatteryPropertiesRegistrar接口。它連續輪詢（使用epoll_wait在定期更新的超時循環中運行，以及POWER子系統的netlink通知 - 例如，如果您連接或斷開充電器）。該系統的BatteryStatsService然後註冊與healthd（通過粘合劑）的監聽器，然後獲得由healthd公佈的數據，

退房/ SYS /班/ POWER_SUPPLY，你會看到：

lrwxrwxrwx root  root    1970-02-05 14:20 ac -> ../../devices/f9923000.i2c/i2c-84/84-006b/power_supply/ac 
lrwxrwxrwx root  root    1970-02-05 14:20 batt_therm -> ../../devices/battery_tm_ctrl.78/power_supply/batt_therm 
lrwxrwxrwx root  root    1970-02-05 14:20 battery -> ../../devices/f9923000.i2c/i2c-84/84-0036/power_supply/battery 
lrwxrwxrwx root  root    1970-02-05 14:20 touch -> ../../devices/virtual/power_supply/touch 
lrwxrwxrwx root  root    1970-02-05 14:20 usb -> ../../devices/msm_dwc3/power_supply/usb 
lrwxrwxrwx root  root    1970-02-05 14:20 wireless -> ../../devices/bq51013b_wlc.77/power_supply/wireless 

然後檢查出「電池」

/sys/devices/f9923000.i2c/i2c-84/84-0036/power_supply/battery: 
-r--r--r-- root  root   4096 2014-02-26 13:26 capacity 
-r--r--r-- root  root   4096 2014-02-26 13:26 charge_full_design 
-r--r--r-- root  root   4096 2014-02-26 13:26 current_now 
lrwxrwxrwx root  root    2014-02-26 13:26 device -> ../../../84-0036 
-r--r--r-- root  root   4096 2014-02-26 13:26 health 
drwxr-xr-x root  root    2014-02-26 13:26 power 
-r--r--r-- root  root   4096 2014-02-26 13:26 present 
-r--r--r-- root  root   4096 2014-02-26 13:26 status 
lrwxrwxrwx root  root    2014-02-26 13:26 subsystem -> ../../../../../../class/power_supply 
-r--r--r-- root  root   4096 2014-02-26 13:26 technology 
-r--r--r-- root  root   4096 2014-02-26 13:26 temp 
-r--r--r-- root  root   4096 2014-02-26 13:26 type 
-rw-r--r-- root  root   4096 2014-02-26 13:26 uevent 
-r--r--r-- root  root   4096 2014-02-26 13:26 voltage_max_design 
-r--r--r-- root  root   4096 2014-02-26 13:26 voltage_min_design 
-r--r--r-- root  root   4096 2014-02-26 13:26 voltage_now 

並通過查看文件，所有的細節將被揭示。