摘要:
An improved battery pack is proposed. The battery pack includes a housing, and first and second cells disposed in the housing, the first cell having a radius and a periphery. In addition, the battery pack includes a metal strap connecting the first and second cells, the strap having an end disposed over the first cell and a portion of the periphery, and two contact protrusions contacting the first cell, wherein distance between the strap end and the overlaped periphery is greater than the radius of the first cell.
摘要:
A battery pack, charger, and terminal blocks for the pack, charger and a cordless power tool are provided. The pack includes battery cells disposed between end caps within a bottom housing of the pack, and a potting boat for housing pack electronics electrically connected to the cells between the end caps and disposed within a pack top housing. A pack terminal block is connected to the potting boat within the top housing. The charger and the power tool each include a terminal block for providing electrical connections between the charger/tool and the battery pack. The terminal block is configured to float side-to-side to provide displaceable movement of the terminal block within the charger housing or tool housing for aligning the battery pack terminal block therein.
摘要:
In a cordless power tool system, high temperature gases created in a battery pack by the battery cells during a charging or discharging operation can be routed into a housing of one of an attached power tool or charger to reduce the temperature of the gases, prior to venting the gases externally. In an example, a battery pack has at least one vent hole for relieving pressure and a movable device covering the vent hole and configured to expose the vent hole upon a pressure set-point within the pack housing being exceeded. In another example, the pack housing includes a thin-walled section designed to break if pressure within the pack housing exceeds a given pressure setpoint. In a further example, the pack housing includes a baffle having an S-shaped cross-section for providing a vent path for gases and for preventing external fluids from entering the pack housing.
摘要:
A battery charger is provided which includes a housing formed by an upper housing half-shell and a lower housing half-shell connected together so that the half-shells align with one another, an opening for inserting a battery pack and an electrical cord extending form the housing. The upper and lower housing half-shells each include an indent area. The indent areas are in alignment with one another so that the electrical cord wraps around and occupies the indent areas. The lower housing half-shell includes a plurality of connections to secure a printed circuit board (PCB) therein to the half shell.
摘要:
An internal component arrangement within a battery pack housing having multiple cells and adapted for cordless power tools may provide desired mechanical support to constrain the cells. The housing with internal component arrangement is configured to route sensing wires from the cells to an electronics module of the pack.
摘要:
A battery pack (1000) for a cordless power tool (10, 20, 30), comprising, a top housing (100) supporting an electronic module (130) and a battery terminal block (110) connected to the electronics module (130), a bottom housing (200) containing a plurality of battery cells (402); and a plurality of sense wires (420) electrically connected between a corresponding cell (420) and the electronics module (130); characterized in that, the plurality of battery cells (402) is constrained between a pair of end caps (405), wherein each end cap (405) includes a plurality of said sense wires (420) extending across an outer surface thereof; and each end cap (405) has a plurality of recesses (406) formed on an inner surface thereof, each recess (406) containing either a cellstrap (410, 710) or a power terminal lead (415) therein.
摘要:
An improved battery pack is proposed. The battery pack includes a housing, and first and second cells disposed in the housing, the first cell having a radius and a periphery. In addition, the battery pack includes a metal strap connecting the first and second cells, the strap having an end disposed over the first cell and a portion of the periphery, and two contact protrusions contacting the first cell, wherein distance between the strap end and the overlaped periphery is greater than the radius of the first cell.
摘要:
An internal component arrangement within a battery pack housing having multiple cells and adapted for cordless power tools may provide desired mechanical support to constrain the cells. The housing with internal component arrangement is configured to route sensing wires from the cells to an electronics module of the pack.