Abstract: A lighting device includes a base, a panel assembly, and a power supply assembly. The panel assembly is at least partially connected to the base and includes a luminous body. The power supply assembly is connected to the lighting device. The panel assembly includes a main panel and a plurality of auxiliary panels. The main panel is fixedly connected to the base, a first auxiliary panel among the plurality of auxiliary panels is rotatably connected to the main panel, and a second auxiliary panel among the plurality of auxiliary panels is rotatably connected to the first auxiliary panel.

Abstract: A battery pack includes: a housing formed with multiple accommodating cavities; and multiple cells, where a cell has an outer peripheral surface, and the distance between at least part of the outer peripheral surface and the intra-cavity wall surface of a respective accommodating cavity is greater than or equal to 0 mm and less than or equal to 1 mm. The outer wall surface of the housing is a heat dissipation surface, and the heat dissipation area of the heat dissipation surface is larger than or equal to 4.5 dm2 and smaller than or equal to 7 dm2.

Abstract: A charging system includes at least one first charging device and at least one second charging device that are cascaded. The first charging device includes at least one first accommodation portion for mounting a first energy storage device and a connecting port for connecting the second charging device or the first charging device. The second charging device includes at least one second accommodation portion for mounting a second energy storage device and a connecting port for connecting the first charging device or the second charging device. The first accommodation portion and the second accommodation portion have different shapes or dimensions.

Abstract: A charging system includes at least one first charging device and at least one second charging device that are cascaded. The first charging device includes at least one first accommodation portion for mounting a first energy storage device and a connecting port for connecting the second charging device or the first charging device. The second charging device includes at least one second accommodation portion for mounting a second energy storage device and a connecting port for connecting the first charging device or the second charging device. The first accommodation portion and the second accommodation portion have different shapes or dimensions.

Abstract: A lighting device includes a base, a panel assembly, and a power supply assembly. The panel assembly is at least partially connected to the base and includes a luminous body. The power supply assembly is connected to the lighting device. The panel assembly includes a main panel and a plurality of auxiliary panels. The main panel is fixedly connected to the base, a first auxiliary panel among the plurality of auxiliary panels is rotatably connected to the main panel, and a second auxiliary panel among the plurality of auxiliary panels is rotatably connected to the first auxiliary panel.

Abstract: A charging apparatus includes: a housing formed with an accommodating space; and a circuit board assembly disposed in the accommodating space and including at least a printed circuit board provided with multiple electronic elements. The output power of the charging apparatus is greater than or equal to 500 W and less than or equal to 2000 W, and the ratio of the output power of the charging apparatus to the volume of the charging apparatus is higher than or equal to 20 W/in3 and lower than or equal to 30 W/in3. With the preceding solution, the charging apparatus with a small overall volume and high output power can be provided.

Abstract: A battery pack for powering an outdoor moving includes: a housing mounted to the outdoor moving device and supported by the outdoor moving device; and a cell module mounted to the housing and including multiple cells. A cell is cylindrical and the diameter of the cell is greater than or equal to 3 cm.

Abstract: A charging system includes at least one first charging device and at least one second charging device that are cascaded. The first charging device includes at least one first accommodation portion for mounting a first energy storage device and a connecting port for connecting the second charging device or the first charging device. The second charging device includes at least one second accommodation portion for mounting a second energy storage device and a connecting port for connecting the first charging device or the second charging device. The first accommodation portion and the second accommodation portion have different shapes or dimensions.

Abstract: An adapter includes: a housing; a battery pack port for accessing a battery pack; a device port including multiple USB-type ports capable of accessing an electric device or a charging apparatus; a protocol matching module configured to perform a protocol handshake with the electric device or the charging apparatus; and a bidirectional DC-DC conversion module capable of converting electrical energy outputted by the battery pack into direct current power supply electrical energy or converting electrical energy from the charging apparatus into direct current charging electrical energy. The bidirectional DC-DC conversion module includes: a power switching element disposed on the power transmission loop between the battery pack port and the device port and capable of adjusting electrical energy in the power transmission loop; and a power control unit electrically connected to the power switching element and capable of controlling the conducting state of the power switching element.

Abstract: A charger includes a housing, a fan, and a circuit board assembly. The housing is formed with an air inlet and an air outlet. The fan is disposed in the housing and used for generating a heat dissipation. A heat dissipation channel for the heat dissipation airflow to flow through is further formed in the housing and includes a first channel and a second channel. A first port of the first channel facing the air inlet has a larger cross-sectional area than the second channel so that the heat dissipation airflow flowing through the first channel is capable of accelerating through the second channel.

Abstract: A wearable battery pack includes a battery pack body, a battery cell and a housing accommodating a battery cell and a wearable device capable of wearing so that the battery pack body at least be worn on a user's back. The battery pack body has a heat dissipation channel running through one side of the battery pack body to the opposite side. The side of the battery pack body which is penetrated by the heat dissipation channel is located between the back of the user and the other side when the user carries the battery pack body.

Abstract: A power tool includes an output member for outputting power, a motor for driving the output member, a housing including a battery pack accommodating portion provided with a first battery pack accommodating cavity and a guide structure for guiding a battery pack to be inserted into the first battery pack accommodating cavity along a first straight line. The battery pack includes a basic housing portion provided with a first accommodating cavity, a first cell group disposed inside the first accommodating cavity, an extended housing portion provided with a second accommodating cavity, and a second cell group disposed inside the second accommodating cavity. The first cell group is at least partially disposed inside the first battery pack accommodating cavity, and the second cell group is at least partially disposed outside the first battery pack accommodating cavity.

Abstract: A lighting device includes a base, a panel assembly, and a power supply assembly. The panel assembly is at least partially connected to the base and includes a luminous body. The power supply assembly is connected to the lighting device. The panel assembly includes a main panel and a plurality of auxiliary panels. The main panel is fixedly connected to the base, a first auxiliary panel among the plurality of auxiliary panels is rotatably connected to the main panel, and a second auxiliary panel among the plurality of auxiliary panels is rotatably connected to the first auxiliary panel.

Abstract: A battery charging method includes detecting a battery temperature and a battery power, determining whether the battery temperature satisfies a preset temperature condition for switching charging processes, performing a first charging process by alternating pulsed charging and discharging when the battery temperature is less than or equal to a first preset temperature value, performing a second charging process including a charge current dynamically adjusted according to the battery temperature and the battery power when the battery temperature is greater than the first preset temperature value and less than a second preset temperature value, and determining whether the battery power is less than a first preset power value when the battery temperature is equal to or greater than the second preset temperature value and less than a third preset temperature value, and performing a third charging process when the battery power is less than the first preset power value.

Abstract: A hand-held electric power tool includes a housing, a connecting seat, and an elastic member. The connecting seat is configured to couple a battery pack to the hand-held electric power tool along a first straight line whereby the battery pack and the hand-held electric power tool are electrically connected via the connecting seat. The connecting seat is operative to move along the first straight line and along a second straight line perpendicular to the first straight line. The elastic member is configured to movably connect the connecting seat to the housing, and is configured to generate a force at least along a third straight line inclined from the first straight line enabling the connecting seat and the battery pack to contact each other.

Abstract: A wearable battery pack includes a battery pack body, a battery cell and a housing accommodating a battery cell and a wearable device capable of wearing so that the battery pack body at least be worn on a user's back. The battery pack body has a heat dissipation channel running through one side of the battery pack body to the opposite side. The side of the battery pack body which is penetrated by the heat dissipation channel is located between the back of the user and the other side when the user carries the battery pack body.

Abstract: A wearable battery pack is provided. The wearable battery pack includes a battery pack body, a battery cell and a housing accommodating a battery cell and a wearable device capable of wearing so that the battery pack body at least be worn on a user's back. The battery pack body has a heat dissipation channel running through one side of the battery pack body to the opposite side; the side of the battery pack body which is penetrated by the heat dissipation channel is located between the back of the user and the other side when the user carries the battery pack body. The invention provides a wearable battery pack that can be carried by users. The wearable battery pack has achieved good heat dissipation performance and can be carried by users comfortably.

Abstract: A battery pack includes a first housing arranged on the outmost side of the battery pack, a second housing arranged within the first housing, battery cells which are at least partially contained in the second housing and a filling body which is at least filled a space between two adjacent battery cells. The filling body is arranged in the second housing. The filling body has a first specific heat capacity when a temperature of the filling body is below a first temperature and has a second specific heat capacity when the temperature of the filling body is above the first temperature.

Abstract: A wearable battery pack is provided. The wearable battery pack includes a battery pack body, a battery cell and a housing accommodating a battery cell and a wearable device capable of wearing so that the battery pack body at least be worn on a user's back. The battery pack body has a heat dissipation channel running through one side of the battery pack body to the opposite side; the side of the battery pack body which is penetrated by the heat dissipation channel is located between the back of the user and the other side when the user carries the battery pack body. The invention provides a wearable battery pack that can be carried by users. The wearable battery pack has achieved good heat dissipation performance and can be carried by users comfortably.

Abstract: A hand-held electric power tool includes a housing, a connecting seat, and an elastic member. The connecting seat is configured to couple a battery pack to the hand-held electric power tool along a first straight line whereby the battery pack and the hand-held electric power tool are electrically connected via the connecting seat. The connecting seat is operative to move along the first straight line and along a second straight line perpendicular to the first straight line. The elastic member is configured to movably connect the connecting seat to the housing, and is configured to generate a force at least along a third straight line inclined from the first straight line enabling the connecting seat and the battery pack to contact each other.