On -vehicle emergency power source

The utility model relates to an on -vehicle emergency power source, including inside battery, control control circuit board that whether inside battery supplied power for mobile unit and holding inside battery with control circuit board's shell, control circuit board makes when externally physical parameter changes the mobile unit power supply of inside battery for connecting, the shell includes first shell and second shell, inside battery with control circuit board installs in first shell or the second shell within one, another shell is through set up being in respectively mounted position on first shell and the second shell, mutual adaptation covers and fixes and installing on inside battery and control circuit board's the shell and form a whole. Implement the utility model discloses an on -vehicle emergency power source has following beneficial effect: can be great for mobile unit power supply, messenger mobile unit's application scope after the parking. 本实用新型涉及种车载应急电源，包括内部电池、控制所述内部电池是否为车载设备供电的控制电路板以及容纳所述内