Battery rod and electronic cigarette

1. A battery rod, applied to assemble with an atomizer to form an electronic cigarette, the battery rod comprising: a battery cartridge, a battery accommodated in the battery cartridge, and a connection unit which is inserted at one end of the battery cartridge and is configured to connect with the atomizer, wherein a charging assembly configured to electronically connect with a charger is inserted at one end of the battery cartridge away from the connection unit, and the charging assembly comprises an internal electrode, an insulation holder, an insulation ring and an external electrode;

wherein the insulation holder is inserted inside the battery cartridge, the internal electrode is sleeve-coupled to the insulation holder and coats one end surface of the insulation holder; the insulation ring is sleeve-coupled to an outer circumferencial surface of the internal electrode, and the external electrode is sleeve-coupled to an outer circumferencial surface of the insulation ring; the external electrode includes a retaining boss, which is retainable on an end surface of the battery cartridge, at one end of the external electrode; and the internal electrode and the external electrode are electronically connected to two electrodes of the battery respectively.

2. The battery rod according to claim 1 , wherein a position limiting step configured to obstruct the external electrode and the insulation ring from moving toward the connection unit is formed on a circumferencial surface of the insulation holder.

3. The battery rod according to claim 2 , wherein the insulation holder is a stepped cylinder, the stepped cylinder comprises a first connection section, a second connection section and a third connection section whose radiuses gradually increase; the position limiting step comprises a first position limiting step and a second position limiting step; the first position limiting step is formed on a circumferencial surface of the second connection section at a portion protruding over the first connection section, and the second position limiting step is formed on a circumferencial surface of the third connection section at a portion protruding over the second connection section; the internal electrode is sleeve-coupled to the first connection section and coats one end surface of the first connection section, an end surface of the insulation ring is positioned opposite to an end surface of the first position limiting step, the external electrode is sleeve-coupled to the second connection section, and an end surface of the external electrode is positioned opposite to an end surface of the second position limiting step.

4. The battery rod according to claim 3 , wherein an insertion groove is provided on the insulation holder, an insertion piece matching with the insertion groove is provided on the internal electrode, and the internal electrode is sleeve-coupled to and fixed on the first connection section through the insertion piece.

5. The battery rod according to claim 4 , wherein the battery rod further comprises a controlling module which is electronically connected with the battery and is configured to control the battery to provide power to the atomizer and to control the charger to charge the battery; the insulation holder is provided with an accommodation groove in connection with one end surface of the insulation holder and in connection with the insertion grove, and the controlling module is accommodated in the accommodation groove and is connected with the insertion piece through a wire in a welding manner.

6. The battery rod according to claim 1 , wherein a lamp configured to simulate a lighted cigarette is provided at one end of the battery rod away from the connection unit, and multiple light-transmitting holes are provided on an end surface of the internal electrode.

7. The battery rod according to claim 6 , wherein the light-transmitting holes form a circle, a letter or a digit.

8. The battery rod according to claim 6 , wherein a part of or all of the light-transmitting holes form a circle, a letter or a digit.

9. The battery rod according to claim 1 , wherein a top end of the charging assembly, formed by the internal electrode, the insulation ring and the external electrode, comprises a surface in shape of spherical cap.

10. An electronic cigarette, comprising an atomizer and a battery rod, wherein,

the battery rod comprises: a battery cartridge, a battery accommodated in the battery cartridge, and a connection unit which is inserted at one end of the battery cartridge and is configured to connect with the atomizer, wherein a charging assembly configured to electronically connect with a charger is inserted at one end of the battery cartridge away from the connection unit, and the charging assembly comprises an internal electrode, an insulation holder, an insulation ring and an external electrode;

wherein the insulation holder is inserted inside the battery cartridge, the internal electrode is sleeve-coupled to the insulations holder and coats one end surface of the insulation holder; the insulation ring is sleeve-coupled to an outer circumferencial surface of the internal electrode, and the external electrode is sleeve-coupled to an outer circumferencial surface of the insulation ring; the external electrode includes a retaining boss, which is retainable on an end surface of the battery cartridge, at one end of the external electrode; and the internal electrode and the external electrode are electronically connected to two electrodes of the battery respectively.