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US 11,637,347 B2Granted
Electric energy storage device and electric tool system
AssigneeGlobe (Jiangsu) Co., Ltd.
InventorsChuanjun Liu, An Yan
Life of this patent
Estimating the term…
Abstract
The disclosure provides an electric energy storage device which includes four energy units with a substantially same voltage value. Each energy unit is provided with a positive electrode and a negative electrode. The electric energy storage device comprises a socket with eight independently arranged electrode terminals that are connected with the four energy units. The disclosure also provides an electric tool system using the electric energy storage device. The electric tool is provided with plugs that may be connected with the four energy units in different states, allowing the electric energy storage device to output multiple voltages.
Claims15
A battery pack, comprising:
- a housing;
- a first string of battery cells arranged in series and disposed inside the housing, the first string of battery cells having a first positive terminal and a first negative terminal;
- a second string of battery cells arranged in series and disposed inside the housing, the second string of battery cells having a second positive terminal and a second negative terminal;
- a third string of battery cells arranged in series and disposed inside the housing, the third string of battery cells having a third positive terminal and a third negative terminal;
- a fourth string of battery cells arranged in series and disposed inside the housing, the fourth string of battery cells having a fourth positive terminal and a fourth negative terminal;
- and
- a battery interface including:
- a first positive output terminal connected with the first positive terminal,
- a first negative output terminal connected with the first negative terminal,
- a second positive output terminal connected with the second positive terminal,
- a second negative output terminal connected with the second negative terminal,
- a third positive output terminal connected with the third positive terminal,
- a third negative output terminal connected with the third negative terminal,
- a fourth positive output terminal connected with the fourth positive terminal, and
- a fourth negative output terminal connected with the fourth negative terminal;
- wherein the battery interface being shaped and configured to interchangeably (1) mechanically and electrically couple with a first power tool interface of a first power tool that is configured to operate at a first rated voltage, (2) mechanically and electrically couple with a second power tool interface of a second power tool that is configured to operate at a second rated voltage, and (3) mechanically and electrically couple with a third power tool interface of a third power tool that is configured to operate at a third rated voltage,
- wherein the third rated voltage is higher than the second rated voltage, the second rated voltage is higher than the first rated voltage,
- wherein when the battery interface is coupled with the first power tool interface, the first positive output terminal, the second positive output terminal, the third positive output terminal, and the fourth positive output terminal are electrically connected to each other, the first negative output terminal, the second negative output terminal, the third negative output terminal, and the fourth negative output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are connected to each other in parallel configuration such that the battery pack provides the first rated voltage to the first power tool,
- wherein when the battery interface is coupled with the second power tool interface, the first positive output terminal and the second positive output terminal are electrically connected to each other, the first negative output terminal, the second negative output terminal, the third positive output terminal, and the fourth positive output terminal are electrically connected to each other, the third negative output terminal, and the fourth negative output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are in parallel-series configuration such that the battery pack provides the second rated voltage to the second power tool,
- wherein when the battery interface is coupled with the third power tool interface, the first negative output terminal and the second positive output terminal are electrically connected to each other, the second negative output terminal and the third positive output terminal are electrically connected to each other, the third negative output terminal and the fourth positive output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are connected to each other in series configuration such that the battery pack provides the third rated voltage to the third power tool.
17 more elements
A battery pack, comprising:
- a housing;
- a circuit board disposed inside the housing;
- a first string of battery cells arranged in series and disposed inside the housing, the first string of battery cells having a first positive terminal and a first negative terminal;
- a second string of battery cells arranged in series and disposed inside the housing, the second string of battery cells having a second positive terminal and a second negative terminal;
- a third string of battery cells arranged in series and disposed inside the housing, the third string of battery cells having a third positive terminal and a third negative terminal;
- a fourth string of battery cells arranged in series and disposed inside the housing, the fourth string of battery cells having a fourth positive terminal and a fourth negative terminal;
- a first positive output terminal disposed on the circuit board and electrically connected with the first positive terminal;
- a first negative output terminal disposed on the circuit board and electrically connected with the first negative terminal;
- a second positive output terminal disposed on the circuit board and electrically connected with the second positive terminal;
- a second negative output terminal disposed on the circuit board and electrically connected with the second negative terminal;
- a third positive output terminal disposed on the circuit board and electrically connected with the third positive terminal;
- a third negative output terminal disposed on the circuit board and electrically connected with the third negative terminal;
- a fourth positive output terminal disposed on the circuit board and electrically connected with the fourth positive terminal;
- and
- a fourth negative output terminal disposed on the circuit board and electrically connected with the fourth negative terminal;
- wherein when the first positive output terminal, the second positive output terminal, the third positive output terminal and the fourth positive output terminal are electrically connected to each other, the first negative output terminal, the second negative output terminal, the third negative output terminal and the fourth negative output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are in parallel configuration such that the battery pack outputs a first rated voltage,
- wherein when the first positive output terminal and the second positive terminal are electrically connected to each other, the first negative output terminal, the second negative output terminal, the third positive output terminal, and the fourth positive output terminal are electrically connected to each other, the third negative output terminal, and the fourth negative output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are in parallel-series configuration such that the battery pack outputs a second rated voltage,
- wherein when the first negative output terminal and the second positive output terminal are electrically connected to each other, the second negative output terminal and the third positive output terminal are electrically connected to each other, the third negative output terminal and the fourth positive output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are connected to each other in series configuration such that the battery pack outputs a third rated voltage,
- wherein the third rated voltage is higher than the second rated voltage, the second rated voltage is higher than the first rated voltage.
16 more elements
A power tool system, comprising:
- a first power tool configured to operate at a first rated voltage, the first power tool having a first power tool interface;
- a second power tool configured to operate at a second rated voltage, the second power tool having a second power tool interface;
- a third power tool configured to operate at a third rated voltage, the third power tool having a third power tool interface;
- and
- a battery pack, comprising:
- a housing;
- a first string of battery cells arranged in series and disposed inside the housing, the first string of battery cells having a first positive terminal and a first negative terminal;
- a second string of battery cells arranged in series and disposed inside the housing, the second string of battery cells having a second positive terminal and a second negative terminal;
- a third string of battery cells arranged in series and disposed inside the housing, the third string of battery cells having a third positive terminal and a third negative terminal;
- a fourth string of battery cells arranged in series and disposed inside the housing, the fourth string of battery cells having a fourth positive terminal and a fourth negative terminal;
- a first positive output terminal electrically connected with the first positive terminal;
- a first negative output terminal electrically connected with the first negative terminal;
- a second positive output terminal electrically connected with the second positive terminal;
- a second negative output terminal electrically connected with the second negative terminal;
- a third positive output terminal electrically connected with the third positive terminal;
- a third negative output terminal electrically connected with the third negative terminal;
- a fourth positive output terminal electrically connected with the fourth positive terminal;
- a fourth negative output terminal electrically connected with the fourth negative terminal;
- and
- a battery interface shaped and configured to interchangeably (1) mechanically and electrically couple with the first power tool interface of the first power tool, (2) mechanically and electrically couple with the second power tool interface of the second power tool, and (3) mechanically and electrically couple with the third power tool interface of the third power tool,
- wherein when the first power tool interface is coupled to the battery interface, the first positive output terminal, the second positive output terminal, the third positive output terminal and the fourth positive output terminal are electrically connected to each other, the first negative output terminal, the second negative output terminal, the third negative output terminal and the fourth negative output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are in parallel configuration such that the battery pack provides the first rated voltage to the first power tool,
- wherein when the second power tool interface is coupled to the battery interface, the first positive output terminal and the second positive terminal are electrically connected to each other, the first negative output terminal, the second negative output terminal, the third positive output terminal, and the fourth positive output terminal are electrically connected to each other, the third negative output terminal, and the fourth negative output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are in parallel-series configuration such that the battery pack provides the second rated voltage to the second power tool,
- wherein when the third power tool interface is coupled to the battery interface, the first negative output terminal and the second positive output terminal are electrically connected to each other, the second negative output terminal and the third positive output terminal are electrically connected to each other, the third negative output terminal and the fourth positive output terminal are electrically connected to each other so that the first string of battery cells, the second string of battery cells, the third string of battery cells and the fourth string of battery cells are connected to each other in series configuration such that the battery pack provides the third rated voltage to the third power tool,
- wherein the third rated voltage is higher than the second rated voltage, the second rated voltage is higher than the first rated voltage.
21 more elements
Dependencies are inferred from the claim text.