Battery pack and electric tool assembly

Abstract

The invention relates to a battery pack which comprises a pack cover, a pack bottom and a battery cell group and is used for charging and discharging, and the battery cell group comprises a plurality of battery cells; the battery line bank is electrically connected to the battery cell group; the mounting cavity is used for accommodating the battery cell group and the battery connector bar, and a plug-in port for the shell terminal to be inserted so as to be electrically connected with the battery pack terminal is formed in the mounting cavity; the connection tripping device can drive the battery pack and the electric tool to be locked and connected or released and separated; the mounting cavity is internally provided with a sealing component for blocking a passage from the plugging port to the battery cell group; the battery pack further comprises a battery pack shell sealing element for blocking the communication between the outside and the mounting cavity, and the battery pack shell sealing element is arranged at the joint of the pack cover and the pack bottom; the connection tripping device is mounted on the battery pack shell, and the connection tripping device is isolated outside the mounting cavity.

Description

[0001] This application is a divisional application of the Chinese invention patent application filed by the applicant on September 25, 2018, with the invention name “Battery Pack and Power Tool Assembly” and application number CN201811114581.6. Technical Field

[0002] The present application relates to a battery pack and an electric tool assembly, and more particularly to a waterproof sealing structure of the battery pack and the electric tool assembly. Background Art

[0003] Nowadays, in the garden machinery and power tool industries, AC-powered power tools are limited by power supply, and their usage scenarios must be equipped with corresponding AC power supplies, which reduces the convenience of outdoor application. In addition, AC-powered power tools are limited by the length of the power cord, and their use can only be within the length of the power cord, which limits the scope of use and mobility of the power tools.

[0004] Therefore, battery packs have become an unstoppable source of energy for power tools. However, due to the complex operating conditions of garden machinery and power tools, water will inevitably enter the installation cavity of the battery pack through the water inlet path on the battery pack during use or storage, especially when used in a humid or watery environment. This will not only affect the life of components, but may even cause a fire, and fail to meet the corresponding safety regulations. Therefore, it is necessary to design a waterproof battery pack to solve the above problems. Summary of the invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a battery pack structure with a simple structure and capable of ensuring that a DC power tool can meet certain waterproof standards.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A battery pack is detachably attached to an electric tool provided with a housing terminal, the battery pack comprising:

[0008] A pack cover; a pack bottom, joined with the pack cover to form a battery pack shell;

[0009] A battery cell group, used for charging and discharging, the battery cell group comprising a plurality of battery cells, each of which is provided with a battery cell body and a first electrode terminal located on one side of the battery cell body and a second electrode terminal located on the other side of the battery cell body;

[0010] A battery terminal block electrically connected to the battery cell group, the battery terminal block comprising a battery pack terminal electrically connected to the housing terminal and a terminal seat carrying the battery pack terminal;

[0011] An installation cavity is defined in the battery pack housing and accommodates the battery cell group and the battery terminal row, and the installation cavity is formed with an insertion port for the housing terminal to be inserted to be electrically connected with the battery pack terminal;

[0012] A connection release device capable of driving the battery pack and the electric tool to lock and connect or release and disengage;

[0013] A sealing member is provided in the installation cavity to block the passage from the plug interface to the battery cell group;

[0014] The battery pack further comprises a battery pack housing seal that blocks communication between the outside and the mounting cavity, and the battery pack housing seal is disposed at the junction of the pack cover and the pack bottom;

[0015] The connection and release device is mounted on the battery pack housing, and the connection and release device is isolated outside the mounting cavity.

[0016] In one embodiment, the sealing member is compressed between the plug interface and the terminal base.

[0017] In one embodiment, the thickness of the sealing member in a free state is greater than the gap between the terminal seat and the plug-in port.

[0018] In one of the embodiments, the sealing component is attached to the plug port, and the sealing component attached to the plug port is arranged on the inner wall of the battery pack, and the sealing component is provided with a through opening, and the opening is configured to allow the shell terminal to be inserted without hindering the sealing component from isolating the plug port and the battery cell group.

[0019] In one embodiment, the sealing member located in the installation cavity is arranged opposite to the battery terminal block.

[0020] In one of the embodiments, the terminal seat is constructed as a waterproof box, and the waterproof box is provided with an opening for the shell terminal to be inserted in the direction facing the plug-in port, and the sealing member is sealed between the inner wall of the battery pack and the waterproof box to block the assembly gap between the waterproof box and the inner wall of the battery pack.

[0021] In one embodiment, the maximum cross-sectional area of ​​the waterproof box in the joining direction of the bag cover and the bag bottom is greater than the cross-sectional area of ​​the plug port in the joining direction.

[0022] In one embodiment, the sealing member is one or more combinations of a soft sealing gasket, a colloid potting body, a waterproof adhesive, and a fusion body formed by welding, which are squeezed between the waterproof box and the inner wall of the battery pack.

[0023] In one embodiment, the sealing member is a separator disposed between the battery terminal block and the battery cell group, and the battery cell group is located in a space enclosed by the separator and an inner wall of the battery pack shell.

[0024] In one embodiment, the connection release device is detachably mounted on the package cover and is movable relative to the package cover to achieve locking connection or release and disengagement between the battery pack and the electric tool.

[0025] In one of the embodiments, the battery pack shell has a locking cavity sunken on its outer surface that at least partially surrounds the connection and release device, the locking cavity forms a movable space for the connection and release device to move, and the locking cavity and the installation cavity are not connected to each other.

[0026] In one of the embodiments, the battery pack includes an isolation member detachably connected to the battery pack shell and an isolation sealing structure located between the isolation member and the battery pack shell, and the isolation member is recessed inwardly to form a locking cavity for accommodating the connection and release device.

[0027] In view of this, the technical problem to be solved by the present invention is to provide an electric tool assembly with a simple structure and capable of ensuring that a DC electric tool can meet certain waterproof standards.

[0028] To achieve the above purpose, the technical solution adopted by the present invention is:

[0029] An electric tool assembly, comprising a battery pack and an electric tool detachably connected to the battery pack, wherein the battery pack comprises:

[0030] A pack cover; a pack bottom, joined with the pack cover to form a battery pack shell;

[0031] A battery cell group, used for charging and discharging, the battery cell group comprising a plurality of battery cells, each of which is provided with a battery cell body and a first electrode terminal located on one side of the battery cell body and a second electrode terminal located on the other side of the battery cell body;

[0032] A battery terminal block electrically connected to the battery cell group, the battery terminal block comprising a battery pack terminal electrically connected to the housing terminal and a terminal seat carrying the battery pack terminal;

[0033] An installation cavity is defined in the battery pack housing and accommodates the battery cell group and the battery terminal row, and the installation cavity is formed with an insertion port for the housing terminal to be inserted to be electrically connected with the battery pack terminal;

[0034] A connection release device capable of driving the battery pack and the electric tool to lock and connect or release and disengage;

[0035] The electric tool comprises:

[0036] A housing; a tool terminal block connected to the housing, the tool terminal block comprising a housing terminal and a base for carrying the housing terminal;

[0037] A functional component having a motor that provides driving force for the electric tool;

[0038] A sealing member is provided in the installation cavity to block the passage from the plug interface to the battery cell group;

[0039] The battery pack further comprises a battery pack housing seal that blocks communication between the outside and the mounting cavity, and the battery pack housing seal is disposed at the junction of the pack cover and the pack bottom;

[0040] The connection and release device is mounted on the battery pack housing, and the connection and release device is isolated outside the mounting cavity.

[0041] In one embodiment, the sealing member is compressed between the plug interface and the terminal base.

[0042] In one embodiment, the thickness of the sealing member in a free state is greater than the gap between the terminal seat and the plug-in port.

[0043] In one of the embodiments, the sealing component is attached to the plug port, and the sealing component attached to the plug port is arranged on the inner wall of the battery pack, and the sealing component is provided with a through hole, and the through hole is configured to allow the shell terminal to be inserted without hindering the sealing component from isolating the plug port and the battery cell group.

[0044] In one embodiment, the sealing member located in the installation cavity is arranged opposite to the battery terminal block.

[0045] In one of the embodiments, the terminal seat is constructed as a waterproof box, and the waterproof box is provided with an opening for the shell terminal to be inserted in the direction facing the plug-in port, and the sealing member is sealed between the inner wall of the battery pack and the waterproof box to block the assembly gap between the waterproof box and the inner wall of the battery pack.

[0046] In one embodiment, the maximum cross-sectional area of ​​the waterproof box in the joining direction of the bag cover and the bag bottom is greater than the cross-sectional area of ​​the plug port in the joining direction.

[0047] In one embodiment, the sealing member is one or more combinations of a soft sealing gasket, a colloid potting body, a waterproof adhesive, and a fusion body formed by welding, which are squeezed between the waterproof box and the inner wall of the battery pack.

[0048] In one embodiment, the sealing member is a separator disposed between the battery terminal block and the battery cell group, and the battery cell group is located in a space enclosed by the separator and an inner wall of the battery pack shell.

[0049] In one embodiment, the connection release device is detachably mounted on the package cover and is movable relative to the package cover to achieve locking connection or release and disengagement between the battery pack and the electric tool.

[0050] In one of the embodiments, the battery pack shell has a locking cavity sunken on its outer surface that at least partially surrounds the connection and release device, the locking cavity forms a movable space for the connection and release device to move, and the locking cavity and the installation cavity are not connected to each other.

[0051] In one of the embodiments, the battery pack includes an isolation member detachably connected to the battery pack shell and an isolation sealing structure located between the isolation member and the battery pack shell, and the isolation member is recessed inwardly to form a locking cavity for accommodating the connection and release device.

[0052] In one embodiment, the electric tool is a high-pressure cleaner, and the housing includes a handle for holding, a main body arranged at an angle to the handle, a water inlet for receiving an external water source, and a water outlet for conveying water to the outside.

[0053] In one embodiment, the main body is arranged at one end of the handle, and the battery pack is arranged at the other end of the handle.

[0054] In one embodiment, the functional component includes a pump driven by the motor to deliver water to the outside, and the functional component is disposed in the housing.

[0055] In one embodiment, the working water pressure output by the high-pressure cleaning machine is 0.3Mpa to 5Mpa.

[0056] In one embodiment, the number of the battery packs is configured to be one or more, and the voltage of each battery pack is 18 to 42V.

[0057] In view of this, the technical problem to be solved by the present invention is to provide an electric tool assembly with a simple structure and capable of ensuring that a DC electric tool can meet certain waterproof standards.

[0058] To achieve the above purpose, the technical solution adopted by the present invention is:

[0059] An electric tool assembly includes an electric tool and a battery pack electrically connected to the electric tool, wherein the electric tool includes:

[0060] A housing; a tool terminal block connected to the housing, the tool terminal block comprising a housing terminal and a base for carrying the housing terminal;

[0061] A functional component having a motor that provides driving force for the electric tool;

[0062] The battery pack is detachably connected to the housing, and the battery pack includes:

[0063] A pack cover; a pack bottom, joined with the pack cover to form a battery pack shell;

[0064] A battery cell group, used for charging and discharging, the battery cell group comprising a plurality of battery cells, each of which is provided with a battery cell body and a first electrode terminal located on one side of the battery cell body and a second electrode terminal located on the other side of the battery cell body;

[0065] A battery terminal block electrically connected to the battery cell group, the battery terminal block comprising a battery pack terminal electrically connected to the housing terminal and a terminal seat carrying the battery pack terminal;

[0066] An installation cavity is defined in the battery pack housing and accommodates the battery cell group and the battery terminal block;

[0067] The battery pack includes a waterproof and breathable structure covering at least a portion of the periphery of the battery cell group, the waterproof and breathable structure includes a first waterproof body covering the first electrode terminal of each battery cell and a second waterproof body covering the second electrode terminal of each battery cell, and the bottom of the pack is provided with a drainage hole that connects the installation cavity with the outside.

[0068] In one embodiment, the first waterproof body and the second waterproof body may be waterproof layers formed by glue injection, and the waterproof layers are adhered to the outer surfaces of the first electrode end and the second electrode end.

[0069] In one embodiment, the first waterproof body and the second waterproof body may be sealed boxes, and the first electrode terminal and the second electrode terminal are accommodated in an inner cavity of the sealed box.

[0070] In one embodiment, the battery pack further includes an adhesive body sealed to the sealing box body and the first and second electrode terminals.

[0071] In one embodiment, the waterproof and breathable structure further includes a third waterproof body covering each battery cell body.

[0072] In one embodiment, the first waterproof body, the second waterproof body and the third waterproof body are integrally constructed into an independent overall structure, and the independent overall structure completely covers the periphery of the battery cell group.

[0073] In one embodiment, the electric tool is a high-pressure cleaner, and the housing includes a handle for holding, a main body arranged at an angle to the handle, a water inlet for receiving an external water source, and a water outlet for conveying water to the outside.

[0074] In one embodiment, the main body is arranged at one end of the handle, and the battery pack is arranged at the other end of the handle.

[0075] In one embodiment, the functional component further includes a pump driven by the motor to deliver water outward, and the functional component is disposed in the housing.

[0076] In one embodiment, the working water pressure output by the high-pressure cleaning machine is 0.3Mpa to 5Mpa.

[0077] In one embodiment, the number of the battery packs is configured to be one or more, and the voltage of each battery pack is 18 to 42V.

[0078] In view of this, the technical problem to be solved by the present invention is to provide an electric tool assembly with a simple structure and capable of ensuring that a DC electric tool can meet certain waterproof standards.

[0079] To achieve the above purpose, the technical solution adopted by the present invention is:

[0080] An electric tool assembly includes an electric tool and a battery pack electrically connected to the electric tool, wherein the electric tool includes:

[0081] The shell comprises a first half shell and a second half shell which are joined to each other and a receiving cavity defined in the shell;

[0082] A tool electrical device is arranged in the housing, and the tool electrical device includes a motor providing driving force for the power tool, a main control panel, and a switch arranged in the housing, the switch controls the motor to work, and the main control panel has a built-in control program that can be used to control the power supply state of the battery pack;

[0083] A pump driven by the motor, the pump comprising a pump body, a plunger disposed in the pump body, a water inlet and a water outlet disposed on the pump body, and a central chamber capable of reciprocating motion of the plunger;

[0084] a water outlet pipe, received in the housing, and having a water outlet communicated with the water outlet of the pump;

[0085] A tool terminal block connected to the housing, the tool terminal block comprising housing terminals and a base for carrying the housing terminals;

[0086] The battery pack is detachably connected to the housing, and the battery pack includes:

[0087] A pack cover; a pack bottom, joined with the pack cover to form a battery pack shell;

[0088] A battery cell group, used for charging and discharging, the battery cell group comprising a plurality of battery cells, each of which is provided with a battery cell body and a first electrode terminal located on one side of the battery cell body and a second electrode terminal located on the other side of the battery cell body;

[0089] A battery terminal block electrically connected to the battery cell group, the battery terminal block comprising a battery pack terminal electrically connected to the housing terminal and a terminal seat carrying the battery pack terminal;

[0090] An installation cavity is defined in the battery pack housing and accommodates the battery cell group and the battery terminal row, and the installation cavity is formed with an insertion port for the housing terminal to be inserted to be electrically connected with the battery pack terminal;

[0091] A connection release device capable of driving the battery pack and the electric tool to lock and connect or release and disengage;

[0092] The housing is provided with a main housing seal for blocking the passage from the joint gap between the first half shell and the second half shell to the receiving chamber of the housing, a water outlet seal for isolating the passage between the water outlet and the tool electrical components, and a tool terminal block seal for blocking the passage from the assembly gap between the tool terminal block and the housing to the receiving chamber;

[0093] When the battery pack and the electric tool are mated, there is a mating gap between the electric tool and the battery pack, and at least one of the electric tool and the battery pack is provided with a plug-in interface seal that blocks a passage from the mating gap to the plug-in interface;

[0094] The battery pack further comprises a battery pack housing seal that blocks communication between the outside and the mounting cavity, and the battery pack housing seal is disposed at the junction of the pack cover and the pack bottom;

[0095] The connection and release device is mounted on the battery pack housing, and the connection and release device is isolated outside the mounting cavity.

[0096] In one embodiment, the tool terminal block is provided with a docking surface, the shell terminal at least partially protrudes outward from the docking surface, the battery pack includes a mating surface capable of docking with the docking surface, and the plug interface is formed on the mating surface.

[0097] In one embodiment, the plug interface seal is disposed between the butt joint surface and the mating surface.

[0098] In one embodiment, the electric tool is a high-pressure cleaner, and the housing includes a handle for holding, a main body arranged at an angle to the handle, and a water inlet for receiving an external water source and communicating with the water outlet.

[0099] In one embodiment, the main body is arranged at one end of the handle, and the battery pack is arranged at the other end of the handle.

[0100] In one embodiment, the motor and the pump are disposed in the main body.

[0101] In one embodiment, the working water pressure output by the high-pressure cleaning machine is 0.3Mpa to 5Mpa.

[0102] In one embodiment, the number of the battery packs is configured to be one or more, and the voltage of each battery pack is 18 to 60V.

[0103] In view of this, the technical problem to be solved by the present invention is to provide an electric tool assembly with a simple structure and capable of ensuring that a DC electric tool can meet certain waterproof standards.

[0104] To achieve the above purpose, the technical solution adopted by the present invention is:

[0105] An electric tool assembly includes an electric tool and a battery pack electrically connected to the electric tool, wherein the electric tool includes:

[0106] A housing, comprising a first half-shell and a second half-shell joined to each other and a receiving cavity defined in the housing;

[0107] A tool electrical device is arranged in the housing, and the tool electrical device includes a motor providing driving force for the power tool, a main control panel, and a switch arranged in the housing, the switch controls the motor to work, and the main control panel has a built-in control program that can be used to control the power supply state of the battery pack;

[0108] A pump driven by the motor, the pump comprising a pump body, a plunger disposed in the pump body, a water inlet and a water outlet disposed on the pump body, and a central chamber capable of reciprocating motion of the plunger;

[0109] a water outlet pipe, received in the housing, and having a water outlet communicated with the water outlet of the pump;

[0110] A tool terminal block connected to the housing, the tool terminal block comprising housing terminals and a base for carrying the housing terminals;

[0111] The battery pack is detachably connected to the housing, and the battery pack includes:

[0112] A pack cover; a pack bottom, joined with the pack cover to form a battery pack shell;

[0113] A charged body, comprising a battery cell group for charging and discharging and a battery terminal block electrically connected to the battery cell group, wherein the battery cell group comprises a plurality of battery cells, each of which is provided with a battery cell body and a first electrode terminal located on one side of the battery cell body and a second electrode terminal located on the other side of the battery cell body, and the battery terminal block comprises a battery pack terminal electrically connected to the housing terminal and a terminal seat carrying the battery pack terminal;

[0114] An installation cavity is defined in the battery pack housing and accommodates the battery cell group and the battery terminal row, and the installation cavity is formed with an insertion port for the housing terminal to be inserted to be electrically connected with the battery pack terminal;

[0115] A connection release device capable of driving the battery pack and the electric tool to lock and connect or release and disengage;

[0116] The housing is provided with a main housing seal for blocking the passage from the joint gap between the first half shell and the second half shell to the receiving chamber of the housing, a water outlet seal for isolating the passage between the water outlet and the tool electrical components, and a tool terminal block seal for blocking the passage from the assembly gap between the tool terminal block and the housing to the receiving chamber;

[0117] When the battery pack and the electric tool are mated, there is a mating gap between the electric tool and the battery pack, and at least one of the electric tool and the battery pack is provided with a plug-in interface seal that blocks a passage from the mating gap to the plug-in interface;

[0118] The battery pack also includes a waterproof and breathable structure that completely covers the periphery of the charged body.

[0119] In one embodiment, the waterproof and breathable structure is a waterproof layer formed by glue injection, or a waterproof tape wrapped around the periphery of the battery cell group, or a sealed box body accommodated in the installation cavity.

[0120] In one embodiment, the electric tool is a high-pressure cleaner, and the housing includes a handle for holding, a main body arranged at an angle to the handle, and a water inlet for receiving an external water source and communicating with the water outlet.

[0121] In one embodiment, the main body is arranged at one end of the handle, and the battery pack is arranged at the other end of the handle.

[0122] In one embodiment, the motor and the pump are disposed in the main body.

[0123] In one embodiment, the working water pressure output by the high-pressure cleaning machine is 0.3Mpa to 5Mpa.

[0124] In one embodiment, the number of the battery packs is configured to be one or more, and the voltage of each battery pack is 18 to 60V.

[0125] In view of this, the technical problem to be solved by the present invention is to provide an electric tool assembly with a simple structure and capable of ensuring that a DC electric tool can meet certain waterproof standards.

[0126] To achieve the above purpose, the technical solution adopted by the present invention is:

[0127] An electric tool assembly includes an electric tool and a battery pack electrically connected to the electric tool, wherein the electric tool includes:

[0128] A housing, comprising a first half-shell and a second half-shell joined to each other and a receiving cavity defined in the housing;

[0129] A tool electrical device is arranged in the storage cavity, and the tool electrical device includes a motor providing driving force for the power tool, a main body control panel, and a switch arranged in the housing, the switch controls the motor to work, and the main body control panel has a built-in control program that can be used to control the power supply state of the battery pack;

[0130] A pump driven by the motor, the pump comprising a pump body, a plunger disposed in the pump body, a water inlet and a water outlet disposed on the pump body, and a central chamber capable of reciprocating motion of the plunger;

[0131] a water outlet pipe, received in the housing, and having a water outlet communicated with the water outlet of the pump;

[0132] A tool terminal block connected to the housing, the tool terminal block comprising housing terminals and a base for carrying the housing terminals;

[0133] The battery pack is configured as a built-in battery housed in the storage cavity;

[0134] The shell is provided with a main body shell seal for blocking the passage from the joint gap between the first half shell and the second half shell to the storage cavity, and a water outlet seal for isolating the passage between the water outlet and the tool electrical device.

[0135] In one embodiment, the housing further includes a waterproof charging port electrically connected to the built-in battery.

[0136] In one embodiment, the power tool assembly further includes a wireless charger, which can cooperate with the built-in battery by induction to charge the built-in battery.

[0137] In one embodiment, the electric tool is a high-pressure cleaner, and the housing includes a handle for holding, a main body arranged at an angle to the handle, and a water inlet for receiving an external water source and communicating with the water outlet.

[0138] In one embodiment, the main body is arranged at one end of the handle, and the battery pack is arranged at the other end of the handle.

[0139] In one embodiment, the motor and the pump are disposed in the main body.

[0140] In one embodiment, the working water pressure output by the high-pressure cleaning machine is 0.3Mpa to 5Mpa.

[0141] In one embodiment, the number of the battery packs is configured to be one or more, and the voltage of each battery pack is 18 to 60V.

[0142] In view of this, the technical problem to be solved by the present invention is to provide an electric tool assembly with a simple structure and capable of ensuring that a DC electric tool can meet certain waterproof standards.

[0143] To achieve the above purpose, the technical solution adopted by the present invention is:

[0144] An electric tool assembly includes an electric tool and a battery pack electrically connected to the electric tool, wherein the electric tool includes:

[0145] A housing, comprising a first half-shell and a second half-shell joined to each other and a receiving cavity defined in the housing;

[0146] The tool electric device comprises a motor providing driving force for the electric tool, a main control panel, and a switch arranged in the housing, wherein the switch controls the motor to work, and the main control panel has a built-in control program for controlling the power supply state of the battery pack;

[0147] A pump driven by the motor, the pump comprising a pump body, a plunger disposed in the pump body, a water inlet and a water outlet disposed on the pump body, and a central chamber capable of reciprocating motion of the plunger;

[0148] a water outlet pipe, received in the housing, and having a water outlet communicated with the water outlet of the pump;

[0149] A tool terminal block connected to the housing, the tool terminal block comprising housing terminals and a base for carrying the housing terminals;

[0150] It is characterized in that the battery pack is configured as a built-in battery accommodated in the storage cavity, and the electric tool assembly also includes a waterproof sealed box body arranged in the shell, and the tool electrical components and the built-in battery are both accommodated in the waterproof sealed box body.

[0151] In one embodiment, the electric tool is a high-pressure cleaner, and the housing includes a handle for holding, a main body arranged at an angle to the handle, and a water inlet for receiving an external water source and communicating with the water outlet.

[0152] In one embodiment, the main body is arranged at one end of the handle, and the battery pack is arranged at the other end of the handle.

[0153] In one embodiment, the motor and the pump are disposed in the main body.

[0154] In one embodiment, the working water pressure output by the high-pressure cleaning machine is 0.3Mpa to 5Mpa.

[0155] In one embodiment, the number of the battery packs is configured to be one or more, and the voltage of each battery pack is 18 to 60V. BRIEF DESCRIPTION OF THE DRAWINGS

[0156] The above-mentioned objectives, technical solutions and beneficial effects of the present invention can be clearly obtained through the following detailed description of specific embodiments that can implement the present invention, combined with the description of the accompanying drawings.

[0157] The same reference numerals and symbols in the drawings and the description are used to designate the same or equivalent elements.

[0158] Figure 1 It is a partial structural disassembly diagram of a battery pack in the first embodiment of waterproofing of a battery pack provided by the present invention under corresponding conditions.

[0159] Figure 2 It is a cross-sectional view of a battery pack in a second embodiment of waterproofing of a battery pack provided by the present invention under corresponding conditions.

[0160] Figure 3 It is a cross-sectional view of a battery pack in a third embodiment of waterproofing of a battery pack provided by the present invention under corresponding conditions.

[0161] Figure 4 It is a cross-sectional view of a battery pack which is a feasible way of implementing the fourth embodiment of waterproofing the battery pack provided by the present invention under corresponding conditions.

[0162] Figure 5 It is a cross-sectional view of another feasible battery pack in the fourth embodiment of waterproofing the battery pack provided by the present invention under corresponding conditions.

[0163] Figure 6 It is a cross-sectional view of another feasible battery pack in the fourth embodiment of waterproofing the battery pack provided by the present invention under corresponding conditions.

[0164] Figure 7 It is a cross-sectional view of a solution of a battery pack in a second embodiment of waterproofing of a battery pack provided under the condition that all electrical components in a handheld high-pressure cleaning machine assembly of the present invention need to be waterproof.

[0165] Figure 8 It is a cross-sectional view of another scheme of the battery pack in the second embodiment of the battery pack waterproofing provided under the condition that all electrical components in the handheld high-pressure cleaning machine assembly of the present invention need to be waterproof.

[0166] Fig. 9 It is a three-dimensional diagram of the handheld high-pressure cleaning machine of the present invention.

[0167] Fig.10 It is a disassembled diagram of the handheld high-pressure cleaning machine and the battery pack of the present invention.

[0168] Fig.11 yes Fig.10 The diagram shown is a schematic diagram of a handheld high-pressure cleaner and a battery pack after being mated with half of the shell removed.

[0169] Fig.12 It is a partial exploded view of the battery pack of the present invention.

[0170] Fig.13 It is a schematic diagram of a first embodiment of waterproofing the tool electrical components in the housing of the handheld high-pressure cleaning machine of the present invention.

[0171] Fig.14 It is a schematic diagram of a second embodiment of waterproofing the tool electrical components in the housing of the handheld high-pressure cleaning machine of the present invention.

[0172] Fig.15 It is a partial schematic diagram of the charging method when the battery pack is built into the housing.

[0173] Fig.16 It is a schematic diagram of a third embodiment of waterproofing the tool electrical components in the housing of the handheld high-pressure cleaning machine of the present invention.

[0174] Fig.17 It is a schematic diagram of a third implementation mode of waterproofing a battery pack provided under the condition that all electrical components in the handheld high-pressure cleaning machine assembly of the present invention need to be waterproof.

[0175] Fig.18yes Fig.14 The shown cross-sectional view of the handheld high-pressure cleaner along the AA direction is a schematic diagram of a first embodiment of heat dissipation of the housing of the handheld high-pressure cleaner.

[0176] Fig.19 It is a schematic diagram of a second embodiment of heat dissipation of a housing of a handheld high-pressure cleaning machine.

[0177] Fig. 20 It is a schematic diagram of a third embodiment of heat dissipation of a housing of a handheld high-pressure cleaning machine.

[0178] Fig.21 It is a schematic diagram of a fourth implementation method of heat dissipation of a housing of a handheld high-pressure cleaning machine. DETAILED DESCRIPTION

[0179] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more specific definition of the protection scope of the present invention. The same reference numerals are used for the same elements in different embodiments.

[0180] like Figures 10-11 , Figures 13-14 As shown, a high-pressure cleaning machine assembly 100 is disclosed, which includes a high-pressure cleaning machine 1 and an energy unit electrically connected to the high-pressure cleaning machine 1. The energy unit is a DC power supply. Specifically, the DC power supply can be a battery pack 2.

[0181] like Fig. 9 , Fig.11 As shown, the high-pressure cleaning machine 1 includes a housing 10, a tool electrical device 11 disposed in the housing 10, and a trigger 13. The tool electrical device 11 includes a motor 111 that provides driving force for the high-pressure cleaning machine 1, a main control panel 12, a switch 105 disposed in the housing 10, and a plurality of wires connected between the above electrical devices. The motor 111 and the battery pack 2 are both electrically connected to the main control panel 12. The main control panel 12 is disposed above the connection between the housing 10 and the battery pack 2. The trigger 13 can be operated to cooperate with the switch 105 to control the motor 111 to work. The main control panel 12 has a built-in control program that can be used to control the power supply status of the battery pack 2, whether the motor 111 rotates, and the change in the rotation speed of the motor 111.

[0182] The high pressure cleaning machine 1 further includes a transmission mechanism 112 connected to the motor 111 and a pump 113 driven by the transmission mechanism 112. The transmission mechanism 112 is used to convert the rotational motion of the motor 111 into the reciprocating motion of the pump 113. The motor 111, the transmission mechanism 112 and the pump 113 constitute functional components of the high pressure cleaning machine 1. Specifically, the transmission mechanism 112 is a gear reduction mechanism.

[0183] like Fig. 9 , Fig.10 and Fig.11 As shown, the housing 10 is roughly pistol-shaped, and the housing 10 adopts a left and right Havers structure, which is connected by a first half shell 101 and a second half shell 102. The housing 10 includes a handle 103 for holding, a main body 104 arranged at an angle to the handle 103, a water inlet 1041 for receiving an external water source, and a water outlet 1042 for outputting water to the outside. The motor 111, the transmission mechanism 112 and the pump 113 are located in the main body 104. For the purpose of portability, the high-pressure cleaning machine 1 provided by the present invention is a handheld high-pressure cleaning machine. The handheld high-pressure cleaning machine 1 itself does not have a water tank for storing a water source, but is connected to a water pipe (not shown) through a water inlet 1041, and the water pipe (not shown) is then connected to an external water source, which can be a pond, a faucet, etc.

[0184] like Fig. 9 , Fig.10 As shown, the handheld high-pressure cleaner 1 also includes a tool terminal block 14 electrically connected to the battery pack 2. The tool terminal block 14 includes a base 141 provided with a docking surface 140 and a plurality of housing terminals 142 retained in the base 141. The tool terminal block 14 is disposed at one end of the handle 103 away from the main body 104, and is configured to be fixedly connected to the bottom of the housing 10. In one embodiment, the fixed connection can be understood as the tool terminal block 14 and the bottom of the housing 10 being integrated with each other through an adhesive. Of course, in other embodiments, the tool terminal block 14 and the bottom of the housing 10 can also be detachably connected through a mechanical structure. For example, the tool terminal block 14 is provided with a locking member (not shown), and the bottom of the housing 10 is provided with a locking hole (not shown) that is locked with the locking member, and the tool terminal block 14 is inserted into the locking hole through the locking member, so that the tool terminal block 14 is reliably positioned.

[0185] The battery pack 2 is disposed at one end of the handle 103 away from the main body 104. Figures 1 to 8 as well as Fig.10 and Fig.12 As shown, the battery pack 2 includes a pack cover 21, a pack bottom 22 connected to the pack cover 21, a battery cell group 23 for charging and discharging, a battery pack control board 24 electrically connected to the battery cell group 23, and a battery terminal block 25 electrically connected to the battery pack control board 24.

[0186] Continue to refer to Figures 1 to 8The package cover 21 and the package bottom 22 have a receiving cavity respectively, and the package cover 21 and the package bottom 22 are matched with each other to form a battery package shell. The battery package shell is provided with a mating surface 211 that can be mated with the mating surface 140, and defines an installation cavity 20 for accommodating a battery cell group 23 and a battery terminal block 25. In this embodiment, the mating surface 211 is formed on the package cover 21. More specifically, the package cover 21 includes an upper surface 212 and a boss 213 protruding upward from the upper surface 212. The boss 213 includes a top surface 2131, a pair of side surfaces 2132 connecting the upper surface 212 and the top surface 2131, and a front end surface 2133. The mating surface 211 is formed by a combination of one or more surfaces of the package cover 21. In this embodiment, the battery terminal block 25 is accommodated in a cavity surrounded by the boss 213 and the battery cell group 23.

[0187] The battery cell group 23 includes a plurality of battery cells 231 arranged in rows or columns in a stacked manner in the installation cavity 20. Each battery cell 231 includes a battery cell body 2311, a first electrode terminal 2312 located on one side of the battery cell body 2311, and a second electrode terminal 2313 located on the other side of the battery cell body 2311. The first electrode terminal 2312 and the second electrode terminal 2313 are arranged opposite to each other and the polarities of the electrodes are opposite. In order to ensure that an electrical connection can be formed between each battery cell 231, the polarities of adjacent first electrode terminals 2312 located on one side of the battery cell body 2311 are opposite. The battery terminal block 25 includes a plurality of battery pack terminals 251 electrically connected to the shell terminal 142. In one possible embodiment, as Figure 4 As shown, the battery terminal block 25 further includes a terminal block 252 for carrying the battery pack terminals 251. The battery terminal block 25 is electrically connected to the battery pack control board 24 via a conductive member 253. Specifically, the conductive member 253 may be a conductive electrode sheet or a wire; in another feasible manner, as shown in FIG. Figure 2 As shown, the battery pack terminal 251 is directly supported on the battery pack control board 24 and is electrically connected to the battery pack control board 24, that is, the battery pack control board 24 can be used as a terminal seat.

[0188] like Fig.10 and Fig.12As shown, the battery pack 2 also includes a connection release device 26 installed on the battery pack housing. The connection release device 26 can move relative to the battery pack housing to connect or disconnect the battery pack 2 with the handheld high-pressure cleaner 1. Specifically, the connection release device 26 includes an operating portion 261 and a clamping portion 262. The operating portion 261 is specifically a button. The button can drive the clamping portion 262 to move up and down relative to the battery pack housing to enable the battery pack 2 to be operably withdrawn from the housing 10. Further, an elastic device 263 is provided between the bottom surface of the connection release device 26 and the outer surface of the package cover 21. Preferably, the elastic device 263 is a spring. The outer surface of the package cover 21 is provided with a mounting groove 210, and the above-mentioned spring is at least partially limited in the mounting groove 210. When the battery pack 2 needs to be removed from the handheld high-pressure cleaner 1, press the button, and the button drives the clamping portion 262 to move downward and disconnect from the handheld high-pressure cleaner 1. At this time, the spring exerts an upward restoring force on the button due to the pressure from the button, so as to restore the connection tripping device 26 to its original height after being pressed.

[0189] Furthermore, in this embodiment, the handheld high-pressure cleaner 1 and the battery pack 2 are plugged together to form a plug interface 27 for electrically connecting the housing terminal 142 and the battery pack terminal 251. The plug interface 27 can be selectively configured on the handheld high-pressure cleaner 1 or the battery pack 2. According to the different positions of the plug interface 27, the present invention provides two types of battery packs 2.

[0190] Specifically, Figures 1 to 8 As shown, when the plug interface 27 is configured on the battery pack 2, the battery pack 2 has a first form structure. That is, the housing terminal 142 is configured as a tab-type terminal protruding outward, and the mating surface 211 of the battery pack 2 is formed with the plug interface 27 for the housing terminal 142 to be inserted to electrically connect with the battery pack terminal 251.

[0191] When the above-mentioned plug-in interface 27 is configured on the handheld high-pressure cleaning machine 1, the battery pack has a second morphological structure (not shown). At this time, the battery pack terminal is configured as a tab-type terminal protruding outward (not shown). The battery pack terminal is inserted into the housing 10 through the plug-in interface to be electrically connected to the housing terminal 142.

[0192] Since the battery pack 2 is presented in the first structure in the embodiment of the present disclosure, only the first structure is described in detail below.

[0193] The handheld high-pressure cleaner 1 can be positioned with different working water pressures and working water flow ranges according to the cleaning scenes and cleaning objects. Specifically, in the disclosed embodiment, the working water pressure output by the handheld high-pressure cleaner 1 can be selected and positioned as a specific value or range value within the range of 0.2Mpa to 10Mpa, and the working water flow rate output can be selected and positioned as a specific value or range value within the range of 1.5L / Min to 8L / Min. For example, the working water pressure of the handheld high-pressure cleaner 1 can be positioned at 0.3 to 2.49Mpa, and the working water flow rate can be positioned at 1.5L / Min to 3.4L / Min; or the working water pressure of the handheld high-pressure cleaner 1 can be positioned at 0.3Mpa to 5Mpa, and the working water flow rate can be positioned at 1.5L / Min to 6L / Min.

[0194] In addition, in this embodiment, the number of battery packs 2 is one or more. In one embodiment, the number of battery packs 2 is one, and the voltage of battery pack 2 is 18V to 60V, that is, the voltage of battery pack 2 can be 18V, 20V, 28V, 36V, 38V, 40V, 42V, 56V, 60V. The capacity of battery pack 2 can be 1.5Ah, 2Ah, 2.5Ah, 3Ah, 4Ah. Of course, in other embodiments, the number of battery packs 2 can also be two.

[0195] It should be noted that the handheld high-pressure cleaner 1 powered by the battery pack 2 is bound to meet the user's demand for portability. However, in the relevant test standards, there are corresponding waterproof requirements for the DC handheld high-pressure cleaner 1. Only by meeting the corresponding waterproof requirements can the DC handheld high-pressure cleaner 1 ensure the safety of users using the machine. The waterproof requirements here should be understood as placing the handheld high-pressure cleaner 1 equipped with the battery pack 2 in the corresponding extreme environment under the corresponding working water pressure of the handheld high-pressure cleaner 1 and the corresponding voltage of the battery pack 2, and ensuring that the machine can meet the waterproof standards. It needs to be emphasized that compared with other power tools, the DC handheld high-pressure cleaner 1 is limited to the diversity of the user's holding method of the machine (depending on the usage scenario or cleaning conditions, the user can radially rotate the fuselage and choose a suitable angle to hold the machine), and its waterproof requirements are more stringent. Therefore, the extreme environment here should be understood as the handheld high-pressure cleaner 1 equipped with the battery pack 2 needs to be tested in multiple directions. That is, holding the machine vertically or horizontally or turning the machine 180 degrees to form an inverted machine can all meet the corresponding waterproof requirements under the corresponding working water pressure and battery pack 2 voltage.

[0196] At present, there are many single battery pack waterproofing solutions on the market. However, these solutions can only prevent water from entering the battery pack installation cavity in a local area of ​​the battery pack, or can only prevent water from entering the battery pack installation cavity in a single test direction (machine vertical placement). These solutions are of no help to handheld high-pressure cleaning machine components (handheld high-pressure cleaning machine and battery pack are connected to form a handheld high-pressure cleaning machine component) with high waterproofing requirements, and cannot completely solve the waterproofing problem.

[0197] In the embodiment of the present disclosure, first, the handheld high-pressure cleaner 1 and the battery pack 2 are plugged in and matched, and usually, there is a matching margin at the matching point. That is, the surfaces where the battery pack 2 and the handheld high-pressure cleaner 1 contact each other cannot be completely tightly fitted, and there will be an assembly gap between the battery terminal row 25 and the inner wall of the battery pack installation cavity 20. The external water flow can flow into the plug-in port 27 of the battery pack along the matching margin between the handheld high-pressure cleaner 1 and the battery pack 2, and flow into the battery cell group 23 from the gap between the battery terminal row 25 and the inner wall of the battery pack installation cavity 20. Furthermore, the two electrode ends (the first and second electrode ends 2312 and 2313) of the battery cell group 23 and the battery cell body 2311 may contact the water flow. In this way, it is easy to cause a short circuit in the circuit of the battery pack 2, causing safety risks such as leakage, electric shock, and even battery cell explosion. To this end, the embodiment of the present disclosure provides the following several battery pack waterproof implementation methods, which are described in detail as follows:

[0198] Specifically, the battery pack 2 includes a waterproof and breathable structure 3 that covers at least a portion of the structure of each battery cell 231 .

[0199] As a first implementation method of waterproofing the battery pack 2 in the embodiment of the present disclosure, Figure 1As shown, the waterproof and breathable structure 3 includes a first waterproof body 31 wrapping the first electrode end 2312 of each battery cell 231 and a second waterproof body 32 wrapping the second electrode end 2313 of each battery cell 231. In other words, each battery cell 231 is not completely wrapped by the waterproof and breathable structure 3, and only the two electrode ends of each battery cell 231 are coated with the waterproof and breathable structure 3. In this way, the handheld high-pressure cleaning machine 1 equipped with the battery pack 2 is placed in a corresponding test environment to ensure that there is no water at the two electrode ends of each battery cell 231. Further, the above-mentioned battery pack control board 24 and / or battery wiring row 25 can be arranged between the first waterproof body 31 and the second waterproof body 32. On the one hand, the cost of waterproof materials and the weight of the battery pack 2 are reduced; on the other hand, an installation area can be reserved for the installation of the battery pack control board 24 and / or the battery wiring row 25. Among them, in one embodiment, the first waterproof body 31 and the second waterproof body 32 can be a glue-filled body formed by glue-filling. Of course, the first waterproof body 31 and the second waterproof body 32 can also be designed as waterproof tape. In another embodiment, the first waterproof body 31 and the second waterproof body 32 are both sealed boxes (not shown) made of waterproof materials, and the overlap between the sealed box and the battery cell group 23 can be sealed by attaching an adhesive (specifically, a waterproof adhesive).

[0200] Furthermore, in the present embodiment, the bottom 22 of the package is also provided with a drainage hole 220, and the water flow can reach the drainage hole 220 along the space between the battery cell group 23 and the bottom 22 of the package, and the water flow that has penetrated into the battery pack mounting cavity 20 is discharged outward through the drainage hole. Among them, the number of drainage holes 220 can be one or more, for example, six drainage holes or eight drainage holes, etc. can be configured. In the case where there are several drainage holes, adjacent drainage holes are offset relative to each other. Preferably, the battery pack 2 also includes a drainage path arranged between the battery cell group 23 and the drainage hole 220, which is used to guide the water flow to be discharged quickly outward along a certain path. Preferably, the drainage hole 220 is arranged at the lowest point of the bottom 22 of the package. Such a design can ensure that there will be no water accumulation between adjacent battery cells 231.

[0201] In this embodiment, only the structural design of the battery pack 23 of the battery pack 2 is changed, and combined with the drainage hole 220 provided on the bottom 22 of the pack, the whole machine formed by the battery pack 2 connected to the handheld high-pressure cleaning machine 1 can meet the test standards under certain conditions. The existing battery pack 2 platform is slightly modified, the cost is low, and the volume increase of the battery pack 2 is also small.

[0202] As the second embodiment of the waterproofing of the battery pack 2 in the disclosed embodiment, the difference between the second embodiment and the first embodiment is that in the first embodiment, the battery cell group 23 is partially wrapped, while in the present embodiment, the battery cell group 23 is sealed and wrapped as a whole. Specifically, the waterproof and breathable structure 3 also includes a third waterproof body (not shown) covering the periphery of each battery cell body 2311. Figure 2 As shown, the first waterproof body 31, the second waterproof body 32, and the third waterproof body are integrated into an independent overall structure, which completely covers the periphery of the battery cell group 23 to prevent external water from flowing into the two electrode ends of the battery cell and / or attaching between each battery cell 231.

[0203] The waterproof and breathable structure 3 is a glue-filled body 34 formed by glue filling, and the glue-filled body 34 is completely wrapped around the battery cell group 23. As mentioned above, the battery pack 2 also includes a conductive member 253 electrically connected between the battery cell group 23 and the battery pack control board 24. In order to avoid the formation of a gap between the conductive member 253 and the glue-filled body 34, a waterproof adhesive is also applied at the connection between the conductive member 253 and the glue-filled body 34 to prevent water from flowing through the gaps into the battery cell group 23. Of course, the waterproof and breathable structure 3 can also be designed as a waterproof tape. The waterproof tape can be directly wrapped around the periphery of the entire battery cell group.

[0204] As the third embodiment of the waterproof battery pack 2 in the embodiment of the present disclosure, the difference between the third embodiment and the first embodiment is that in the first embodiment, the battery cell group 23 is partially wrapped, while in the present embodiment, the battery cell group 23 is sealed and wrapped as a whole. Figure 3 As shown, the waterproof and breathable structure 3 is a sealed box body 35 accommodated in the installation cavity 20. The sealed box body 35 is made of waterproof material. The sealed box body 35 includes a first sealed box body 351 and a second sealed box body 352 that are joined to each other. The first sealed box body 351 and the second sealed box body 352 are joined to form a receiving space. The battery cell group 23 is completely accommodated in the receiving space. Among them, the first sealed box body 351 and the second sealed box body 352 can be fastened and joined by screws or snaps. In order to avoid the presence of a seam between the two sealed box bodies after the first sealed box body 351 and the second sealed box body 352 are mechanically joined. In this embodiment, the battery pack 2 also includes a joint seal 353 arranged between the first sealed box body 351 and the second sealed box body 352. When the first sealed box body is assembled to the second sealed box body, the joint seal 353 blocks the external water flow from flowing into the receiving space through the joint gap. Specifically, the joint seal 353 can be a sealing ring, and the first sealing box body 351 and the second sealing box body 352 are in contact and squeeze the sealing ring to seal the assembly gap. Of course, the joint seal 353 can also be a waterproof adhesive.

[0205] Similarly, the battery pack 2 also includes a conductive member 253 electrically connected between the battery cell group 23 and the battery pack control board 24. In order to avoid the formation of a gap between the conductive member 253 and the sealed box body that affects the sealing, a waterproof adhesive 354 is also applied to the connection between the conductive member 253 and the sealed box body to prevent water from flowing through the gap into the battery cell group 23.

[0206] As a fourth implementation method of waterproofing the battery pack in the disclosed embodiment, firstly, since there is an assembly gap between the battery terminal row 25 and the mounting cavity 20 of the battery pack 2, the plug port 27 is connected to the inside of the mounting cavity 20. Water entering from the plug port 27 can flow into the mounting cavity 20 through the assembly gap. Figure 4 As shown, in this embodiment, the battery pack 2 is provided with a sealing member 4 that blocks the passage from the assembly gap to the battery cell group 23 . The sealing member 4 is disposed in the installation cavity 20 of the battery pack 2 .

[0207] In one feasible manner, the sealing member (not shown) is compressed between the plug port 270 and the terminal seat 251. Specifically, the thickness of the sealing member 4 in a free state is greater than the gap between the terminal seat 251 and the plug port 270, so as to fill the gap between the terminal seat 251 and the inner wall of the battery pack, and prevent the water flow entering from the plug port 27 from further flowing into the installation cavity 20.

[0208] In another feasible manner, when the battery terminal row 25 is configured to be supported by the battery pack housing, such as Figure 4 As shown, the sealing member 4 is an annular waterproof structure 41 pressed between the battery wiring row 25 and the battery pack housing. The gap between the battery wiring row 25 and the inner wall of the battery pack is filled and sealed. Figure 2 In the direction of the connection between the package cover 21 and the package bottom 22, the sealing member 4 is squeezed between the battery terminal block 25 and the battery cell group 23, and in the direction from the first electrode end 2312 to the second electrode end 2313, the sealing member 4 is squeezed between the battery pack shell and the battery terminal block 25. Specifically, the sealing member 4 is connected to the terminal seat 252 of the battery pack 2. A ring-shaped groove (not shown) is formed on the outer periphery of the terminal seat 252. The sealing member 4 is assembled in the groove. Furthermore, the battery pack 2 also includes an adhesive that bonds the sealing member 4 and the groove into one. It should be noted that the sealing member 4 can be understood as a partition wall blocking the battery terminal block 25 and the installation cavity 20, so even if water can flow in along the plug port 27 on the battery pack 2, it cannot enter the installation cavity 20.

[0209] In another possible approach, Figure 5As shown, the terminal seat 252 is constructed as a waterproof box, and the battery pack terminal 251 is integrally formed with the waterproof box 252. The waterproof box 252 is provided with an opening for the shell terminal 142 to be inserted in the direction facing the plug-in port 27. The opening can be designed as an independent integral type. It can also be designed as a plurality of openings offset relative to each other, and the plurality of openings correspond to the battery pack terminal 251 one by one. The sealing member 4 is sealed between the inner wall of the battery pack 2 and the waterproof box 252 to block the assembly gap between the waterproof box 252 and the inner wall of the battery pack. Further, the maximum cross-sectional area of ​​the waterproof box 252 in the joining direction of the package cover 21 and the package bottom 22 is not less than the cross-sectional area of ​​the plug-in port 27 in the said joining direction. By changing the structure of the traditional battery pack terminal row 25 and utilizing the deformation of the terminal seat 252 structure, on the one hand, it is ensured that the battery pack terminal 251 is electrically plugged with the shell terminal 142 without obstacles; on the other hand, the water flow can only flow into the waterproof box without contacting the battery cell group 23.

[0210] Furthermore, a feasible method is provided, in which a sealing member (not shown) is attached to the plug-in port 27, and the sealing member attached to the plug-in port is arranged on the inner wall of the battery pack 2, and is arranged back to back with the mating surface 211 of the battery pack 2. The sealing member is provided with a through hole for the housing terminal 142 to penetrate, and in order to ensure the sealing performance, the through hole and the housing terminal are interference-fitted, and the through hole is provided so as not to hinder the sealing member from isolating the plug-in port 27 and the battery cell group 23 for the housing terminal 142 to penetrate.

[0211] Among the above-mentioned feasible methods listed in the fourth embodiment, the sealing component 4 is one or more combinations of a block-shaped soft sealing gasket, a glue-filled body formed in the form of glue filling, a waterproof adhesive, and a fusion body formed by welding.

[0212] In addition, if Figure 6 As shown, in this feasible mode, the sealing member 4 is a partition plate 42 arranged between the battery terminal row 25 and the battery cell group 23, and the battery cell group 23 is located in a sealed space surrounded by the partition plate 42 and the inner wall of the battery pack. The four edges of the partition plate 42 are against the inner wall of the battery pack. The sealing member 4 also includes a waterproof adhesive or a waterproof gasket 43 adhered between the four edges of the partition plate 42 and the inner wall of the battery pack. Specifically, two brackets parallel to each other in the front and back (i.e., the plug-in direction of the battery pack) are provided in the installation cavity 20, and the partition plate 42 is located between the two parallel frames 202. In the front and back direction, the waterproof adhesive is adhered between the partition plate 42 and the two parallel frames. Of course, two parallel brackets can also be provided in the installation cavity 20 in the left and right direction (i.e., in the direction from the first electrode end 2312 to the second electrode end 2313), that is, the partition plate is supported on the above four brackets, and the assembly stability is higher.

[0213] Secondly, the package cover 21 and the package bottom 22 of the battery pack 2 provided in the embodiment of the present disclosure are split structures. The package cover 21 and the package bottom 22 are fastened together by screws (not shown). Since the package cover 21 and the package bottom 22 are fastened together by screws, there must be an assembly gap at the connection between the package cover 21 and the package bottom 22. External water flow can flow into the installation cavity 20 of the battery pack 2 through the assembly gap, resulting in water on the two electrode ends of each battery cell 231 and / or water accumulation between the battery cell groups 23, thereby causing a short circuit in the battery pack 2, causing safety risks such as leakage, electric shock, and even battery cell explosion. Therefore, in this embodiment, if Figure 4 As shown, the battery pack 2 is also provided with a battery pack housing seal 28 that blocks the passage from the assembly gap between the cover 21 and the bottom 22 to the battery cell group 23. The battery pack housing seal 28 is arranged at the connection between the cover 21 and the bottom 22. When the cover 21 and the bottom 22 are matched, the battery pack housing seal 28 blocks the external water flow from flowing into the installation cavity 20. It should be noted that the connection here is not only the area where the screws are fastened or the area where the snap structure is engaged, but the area where the entire peripheral edge of the cover 21 and the entire peripheral edge of the bottom 22 are in contact. In a feasible embodiment, the battery pack housing seal 28 is a soft sealing pad. When the bottom 22 and the cover 21 are in contact, the soft sealing pad is squeezed to seal the assembly gap between the cover 21 and the bottom 22. Of course, in other embodiments, the cover 21 and the bottom 22 can be sealed by welding, such as ultrasonic welding or laser welding.

[0214] Preferably, Figure 4 , Figure 8 and Fig.10 As shown, the battery pack 2 also includes a display device 29 that characterizes the working characteristics of the battery pack and a display device receiving chamber 201 that receives the display device. The display device receiving chamber 201 is located in the mounting chamber 20. The display device 29 includes a display device control board 291, a power display light 292 electrically connected to the display device control board 291, and a power display button 293, and the power display button 293 can be operably triggered to light up the power display light 292. In this embodiment, the display device receiving chamber 201 is defined as a closed space by the battery pack shell seal 28 to prevent external water from flowing into the battery pack 2 through the display device receiving chamber 201.

[0215] In addition, the inventors found that the existing connection and release device is assembled on the battery pack shell, and the connection and release device is at least partially located in the installation cavity 20. The connection and release device can move relative to the battery pack shell to achieve connection or disconnection with the shell 10. In other words, there is a movable gap between the connection and release device and the installation cavity 20 for the connection and release device to move, and the external water flow can easily enter the installation cavity of the battery pack through the movable gap, resulting in water on the two electrode ends of the battery cell 231 and / or water accumulation between the battery cells 231.

[0216] Therefore, in this embodiment, the connection tripping device 26 and the mounting cavity 20 are configured to be independent of each other and not connected. Specifically, the connection tripping device 26 is installed on the battery pack housing, and the connection tripping device 26 is isolated outside the mounting cavity 20 of the battery pack 2. The battery pack housing forms an activity space for the connection tripping device 26 to move, and the activity space is independently isolated outside the mounting cavity 20 to prevent external water from entering the activity space and further flowing into the mounting cavity 20.

[0217] In a feasible implementation manner, the connection release device 26 is detachably mounted on the outer surface of the package cover 21. Specifically, Fig.12 As shown, the cover 21 is integrally formed, and a locking cavity 214 is sunken on the outer surface of the cover 21, which at least partially surrounds the connection tripping device 26. The locking cavity 214 forms the above-mentioned activity space for the connection tripping device 26 to move up and down, and the locking cavity 214 and the installation cavity 20 are not connected to each other to prevent external water from entering the locking cavity 214 and further entering the installation cavity 20.

[0218] In another feasible embodiment, the battery pack 2 further includes an isolating member (not shown). The isolating member is detachably mounted on the battery pack housing and the isolating member is recessed inwardly to provide a locking cavity for accommodating the connection tripping device 26. That is, the locking cavity and the installation cavity are isolated by the isolating member. In this embodiment, the battery pack 2 further includes an isolating sealing structure (not shown) disposed between the isolating member and the battery pack housing to block the passage from the assembly gap between the isolating member and the battery pack housing to the installation cavity. Specifically, the isolating sealing structure is a soft sealing pad extruded between the isolating member and the battery pack housing. Of course, in other embodiments, the isolating member and the battery pack housing may also be sealed by welding.

[0219] In the fourth embodiment of the battery pack waterproofing, without making any changes to the structure of the battery pack 23, only by blocking all water inlet paths on the battery pack 2, the whole machine formed by the battery pack 2 connected to the handheld high-pressure cleaner 1 can meet the test standards under certain conditions. Such a design ensures the waterproof reliability of the battery pack 2 in all aspects, has a simple structure, low cost, and does not require much change to the battery pack platform, so that the battery pack 2 that powers the handheld high-pressure cleaner 1 can also power other tools.

[0220] The industry has different waterproof requirements for DC high-pressure cleaners 1. The different waterproof requirements are considered based on the working water pressure of the handheld high-pressure cleaner 1 and the voltage of the battery pack. The above three implementations can ensure that the DC handheld high-pressure cleaner assembly with a working water pressure of less than 2.5Mpa and a battery pack voltage of less than 42.4V meets the waterproof requirements of the safety standards.

[0221] It can further ensure that when the working water pressure sprayed by the handheld high-pressure cleaning machine 1 is greater than 2.5Mpa and the voltage of the battery pack 2 connected to the handheld high-pressure cleaning machine 1 is greater than 42.4V, the waterproofness of the battery pack 2 can meet the requirements of the safety standards.

[0222] It needs to be emphasized that when the working water pressure sprayed by the handheld high-pressure cleaner 1 is greater than 2.5Mpa, and the voltage of the battery pack 2 connected to the handheld high-pressure cleaner 1 is greater than 42.4V, the industry has stricter requirements for the waterproofing of the DC handheld high-pressure cleaner 1. It is necessary to ensure that there is no water on the surface of the charged parts of the whole machine (handheld high-pressure cleaner 1 and battery pack 2), and a certain creepage distance must be met. It can be understood that not only the charged parts on the battery pack 2 need to be waterproofed, but also the tool electrical components contained in the housing 10 of the handheld high-pressure cleaner 1 need to be waterproofed to ensure that the handheld high-pressure cleaner 1 meets the requirements of the waterproofing standard. To this end, the embodiments of the present disclosure provide the following several waterproofing implementation methods, which are described in detail as follows:

[0223] First, it is introduced how the tool electrical components housed in the housing 10 are waterproofed in the embodiment of the present disclosure.

[0224] As a first implementation method of waterproofing the tool electrical components in the housing 10 in the embodiment of the present disclosure, Figures 9-11As shown, the first half shell 101 and the second half shell 102 of the housing 10 are both solid structures, and the first half shell 101 and the second half shell 102 can be connected by conventional mechanical fastening methods such as screws or buckles to form a storage cavity 106. However, when connected by screws or buckles, there must be a joint gap at the connection between the first half shell 101 and the second half shell 102. External water can flow into the storage cavity 106 of the housing 10 through the joint gap, resulting in water on the surface of the tool electrical components contained in the housing 10. Therefore, in this embodiment, Fig.13 As shown, the housing 10 is also provided with a main housing seal 5 that blocks the passage from the joint gap between the first half shell 101 and the second half shell 102 to the receiving chamber 106. The main housing seal 5 is disposed at the connection between the first half shell 101 and the second half shell 102. When the first half shell 101 and the second half shell 102 are assembled, the main housing seal 5 blocks the water flow from flowing into the receiving chamber 106 of the housing 10.

[0225] In a feasible implementation, the mainframe housing seal 5 is a soft sealing strip. Of course, in other implementations, the first half shell 101 and the second half shell 102 can also be sealed by welding. That is, the mainframe housing seal 5 can also be understood as a waterproof adhesive or a welding sealing method, such as ultrasonic welding.

[0226] Further, the pump 113 includes a pump body 1131, a plunger (not shown) accommodated in the pump body 1131, a water inlet (not shown) and a water outlet (not shown) arranged on the pump body 1131, and a central chamber (not shown). The water inlet on the pump body 1131 is connected to the water inlet 1041. The movement of the plunger drives the cleaning liquid to flow into the central chamber through the water inlet 1041, and flows from the water outlet of the pump body 1131 to the direction of the water outlet pipe 110. The handheld high-pressure cleaning machine 1 also includes a water outlet pipe 110 connected to the water outlet of the pump body 1131, and the water outlet pipe 110 is accommodated in the housing 10. In this embodiment, when the water outlet pipe 110 is received in the shell 10, there is an assembly gap between the water outlet pipe 110 and the shell 10, and the handheld high-pressure cleaning machine 1 is provided with a water outlet pipe seal 6 that blocks the passage from the assembly gap to the storage chamber 106 of the shell 10, so as to isolate the water outlet 1042 and the tool electrical components received in the shell 10. In one feasible embodiment, the water outlet pipe seal 6 is a sealing ring squeezed between the water outlet pipe 110 and the shell 10. In another feasible embodiment, the water outlet pipe seal 6 can also be a glue-filled body formed by glue filling. Of course, in other embodiments, the assembly gap between the shell 10 and the water outlet pipe 110 can also be filled by welding.

[0227] In addition, in the present embodiment, the tool terminal block 14 is fixedly connected to the bottom of the housing 10, and there is an assembly gap between the tool terminal block 14 and the housing 10. A tool terminal block seal (not shown) is provided between the tool terminal block 14 and the housing 10 to prevent external water from flowing into the storage cavity 106 of the housing 10 through the assembly gap. In one feasible embodiment, the tool terminal block seal (not shown) is a sealing ring squeezed between the tool terminal block 14 and the housing 10. In another feasible embodiment, the tool terminal block seal can also be a glue-filled body formed by glue filling. Of course, in other embodiments, the gap between the housing 10 and the tool terminal block 14 can also be filled by welding.

[0228] In this embodiment, the joint gap between the half shells is sealed, the matching gap between the water outlet pipe 110 and the shell 10 is sealed, and the assembly gap between the shell 10 and the tool terminal block 14 is sealed to block the water leakage on the shell 10 in all directions, thereby preventing water from entering the shell storage cavity 106 and causing water to be on the surface of the tool electrical components stored in the shell 10.

[0229] As a second implementation method of waterproofing the tool electrical components in the handheld high-pressure cleaning machine 1 in the embodiment of the present disclosure, Fig.14 As shown, the difference between this embodiment and the above-mentioned embodiment is that the connection between the first half shell 101 and the second half shell 102 in this embodiment is fastened only by a simple mechanical connection method, such as a buckle, a screw, etc., and a waterproof sealing structure may not be provided at the connection between the first half shell 101 and the second half shell 102. The waterproof sealing structure in this embodiment is arranged in the inner cavity of the shell 10. Specifically, the handheld high-pressure cleaning machine 1 also includes a waterproof sealing box 7, which is accommodated in the shell 10. The tool electrical components in the shell 10 are all placed in the waterproof sealing box 7. Specifically, the above-mentioned motor 111, the main control panel 12 and the conductive parts electrically connecting these components are all placed in the waterproof sealing box 7 to prevent water flow from contacting the tool electrical components in the shell 10.

[0230] Further, the switch 105 contained in the housing 10 can be used to control the motor 111 to work. In one embodiment, the switch 105 is a push switch, which includes a button 1051 for pressing. When the handheld high-pressure cleaning machine 1 needs to be started, the button 1051 can be pressed to the start state, and the motor 111 rotates to provide power; when the handheld high-pressure cleaning machine 1 needs to be turned off, the button 1051 can be pressed to the release state, and the motor 111 can stop rotating within a preset time. In this embodiment, in order to facilitate the button 1051 on the switch 105 to be pressed or released, the switch 105 is not set in the waterproof sealing box 7. In order to prevent water from entering the interior of the housing 10 through the gap between the first half shell 101 and the second half shell 102, affecting the use of the switch 105. In this embodiment, the switch 105 can be a waterproof switch.

[0231] Of course, the switch 105 can also be located inside the waterproof sealed box 7 together with the motor 111, the main control panel 12 and the conductive parts electrically connected between the above electrical components. In this embodiment, the switch 105 is an induction switch. When the operator needs to start the handheld high-pressure cleaner 1, the operator presses the trigger 13, and the induction switch can sense the pressure of the operator, thereby controlling the induction switch to be in an on state.

[0232] In this embodiment, the tool electrical components stored in the shell 10 are directly placed in the waterproof sealed box 7 to prevent water from flowing into the storage cavity 106 of the shell 10, resulting in water on the surface of the tool electrical components in the shell 10.

[0233] As a third implementation method of waterproofing the tool electrical components in the housing 10 in the embodiment of the present disclosure, Fig.16As shown, in this embodiment, the joint of the first half shell 101 and the second half shell 102 of the housing 10 is not provided with a waterproof sealing structure. The outer peripheral surface of the main control board 12 housed in the housing 10 is provided with a wrapping layer. The wrapping layer can be implemented in the form of glue filling. Further, in this embodiment, the switch 105 is a waterproof switch. The motor 111 is a high heat dissipation waterproof motor. In addition, in this embodiment, the handheld high-pressure cleaning machine 1 also includes a conductive member electrically connected between the above-mentioned electrical components, specifically, the conductive member is a plurality of cable assemblies 15. The cable assemblies 15 include a first cable assembly 151 that electrically connects the tool terminal block 14 to the main control board 12, a second cable assembly 152 that electrically connects the waterproof switch 105 to the main control board 12, and a third cable assembly 153 that electrically connects the high heat dissipation motor 111 to the waterproof switch 105. Each cable assembly 15 includes a waterproof connector 154, a first cable 155 electrically connected to one end of the waterproof connector 154, and a second cable 156 electrically connected to the other end of the waterproof connector 154. The two cables are electrically connected to the corresponding tool electrical components. In this embodiment, the two electrical components can be electrically connected without disassembling the electrical components through the arrangement of the cable assembly 15, further ensuring that the waterproof effect of the corresponding electrical components themselves is not damaged.

[0234] In the three waterproof embodiments of the tool electrical components in the housing, the battery pack 2 is positioned in two different ways.

[0235] The first setting method of the battery pack: Figures 13-16 As shown, the battery pack 2 is completely accommodated in the housing 10. In other words, the battery pack 2 is non-detachably connected to the housing 10.

[0236] At this time, in one case, the battery pack 2 and the shell 10 can be waterproofed only by the method provided in the first embodiment of the waterproofing of the above-mentioned shell 10, that is, sealing the joint gap between the two half shells and sealing the matching gap between the water outlet pipe 110 and the shell 10.

[0237] In another case, only the method provided in the second embodiment of waterproofing the shell 10 is used, that is, the tool electrical components and the battery pack 2 contained in the shell are contained together in the waterproof sealed box 7. Specifically, the motor 111, the main control panel 12, the battery pack 2, and the conductive parts electrically connected between the above-mentioned electrical components are all contained in the above-mentioned waterproof sealed box 7. It should be noted that: as with the second embodiment of waterproofing the shell 10, it can be selected whether to set the switch 105 in the waterproof sealed box 7 according to the type of switch 105. By changing the position of the battery pack 2, the waterproof seal between the battery pack 2 and the shell 10 can be achieved in only one step, and there is no need to additionally set the waterproof structure of the battery pack 2, and the waterproof structure is simpler. It should be noted that in the embodiment in which the battery pack 2 is built into the shell 10, the battery pack can be understood as a built-in battery.

[0238] In addition, since the battery pack 2 is contained in the housing 10, it is necessary to further consider how to charge the battery pack 2. The present invention provides two solutions. One solution is: Fig.15 As shown, a waterproof charging interface 16 connected to the battery pack 2 is provided on the housing 10. The battery pack is charged through the charging interface 16. Another solution is: Fig.14 As shown, the battery pack 2 further includes a wireless charging component (not shown) accommodated in the mounting cavity 20. The handheld high-pressure cleaner 1 further includes a wireless charger 17. It should be noted that the wireless charger 17 can be used as a part of the handheld high-pressure cleaner 1 or as an accessory. When the handheld high-pressure cleaner 1 is placed on the wireless charger 17, the wireless charger 17 can be inductively matched with the wireless charging component in the battery pack 2 to wirelessly charge the battery pack 2.

[0239] The second configuration of the battery pack 2 is as follows: Figures 10-11 and Fig.17 As shown, the battery pack 2 is detachably connected to the housing 10. This means that the battery pack 2 is external. At this time, the charged body on the battery pack 2 needs to be waterproofed and sealed to ensure that the tool electrical components on the housing 10 and the charged body on the battery pack 2 are not in contact with water.

[0240] The following describes how the charged parts on the battery pack 2 are waterproofed in this embodiment when the working water pressure sprayed by the handheld high-pressure cleaner 1 is greater than 2.5 MPa and the voltage of the battery pack 2 detachably connected to the handheld high-pressure cleaner 1 is greater than 42.4 V.

[0241] As the first implementation method of waterproofing the charged parts on the battery pack 2 in the embodiment of the present disclosure, firstly, the cover 21 and the bottom 22 of the battery pack 2 provided in the embodiment of the present disclosure are split structures. The cover 21 and the bottom 22 are fastened together by screws (not shown). Since the cover 21 and the bottom 22 are fastened together by screws, there must be an assembly gap at the connection between the cover 21 and the bottom 22. External water can flow into the installation cavity 20 of the battery pack 2 through the assembly gap, resulting in water on the two electrode ends of each battery cell 231 and / or water accumulation between the battery cell groups 23, thereby causing a short circuit in the battery pack 2, causing safety risks such as leakage, electric shock, and even battery cell explosion. Therefore, in this embodiment, the connection between the cover 21 and the bottom 22 needs to be waterproof and sealed. Specifically, the working water pressure sprayed by the handheld high-pressure cleaning machine 1 is less than 2.5Mpa, and the voltage of the battery pack 2 connected to the handheld high-pressure cleaning machine 1 is less than 42.4V, and the working water pressure sprayed by the handheld high-pressure cleaning machine 1 is greater than 2.5Mpa, and the voltage of the battery pack 2 connected to the handheld high-pressure cleaning machine 1 is less than 42.4V, and the fourth embodiment of the waterproofing of the battery pack 2 is about the waterproof sealing scheme of the bag cover 21 and the bag bottom 22 (such as Figure 4 As shown), they are not described one by one here.

[0242] Further, the waterproof sealing scheme of the connection tripping device 26 on the battery pack 2 can also refer to the waterproof sealing scheme of the connection tripping device 26 in the fourth embodiment of the waterproofing of the battery pack 2 (such as Fig.12 As shown in the figure, I will not describe them one by one this time.

[0243] In addition, when the battery pack 2 and the handheld high-pressure cleaner 1 are connected, there is a matching gap between the handheld high-pressure cleaner 1 and the battery pack 2 to prevent the battery pack terminals 251 and the shell terminals 142 contained in the installation cavity 20 from contacting with external water flow. Fig. 9 , 10 As shown, at least one of the handheld high-pressure cleaner 1 and the battery pack 2 is equipped with a plug interface seal 270 that blocks the passage from the mating gap to the plug interface 27. The plug interface seal 270 can isolate the battery pack terminal 251 and the shell terminal 142 from the outside world, and inhibit external water from flowing into the battery pack terminal 251 and the shell terminal 142 through the mating gap. Specifically, the plug interface seal 270 is connected between the tool terminal block 14 and the mating surface 211 of the battery pack 2. Regarding the connection of the plug interface seal 270, in one embodiment, the plug interface seal 270 is connected to the tool terminal block. Specifically, as Fig. 9As shown, the plug interface seal 270 is fixedly attached to at least part of the docking surface 140 by an adhesive. When the battery pack 2 is installed on the handheld high-pressure cleaner 1, the plug interface seal 270 is configured to abut against the mating surface 211 of the battery pack 2 and isolate the battery pack terminal 251 and the shell terminal 142 from the outside world to inhibit external water from entering the installation cavity 20 of the battery pack 2 through the plug interface 27. The plug interface seal 270 can be connected to the docking surface 140 by an adhesive, or by a fastener (not shown) or any other feasible method. The plug interface seal 270 can be an elastically deformable block cushion made of waterproof insulating material. The block cushion includes a plurality of through openings (not shown), which are configured to allow the shell terminal 142 to be inserted correspondingly without hindering the block cushion to isolate the plug interface. Of course, the plug interface seal 270 can also select an integrally formed strip seal ring (not shown). The sealing ring is disposed on the docking surface 140 . After the battery pack 2 is connected to the handheld high-pressure cleaning machine 1 , the plug-in port 27 is located in the sealed space surrounded by the strip-shaped sealing ring.

[0244] Of course, the plug interface seal 270 can also be movably arranged on the tool terminal block 14. During the process of connecting the battery pack 2 and the handheld high-pressure cleaner 1, the distance between the plug interface seal 270 and the docking surface 140 of the tool terminal block 14 can be driven to change, and at least one distance can prevent external water from entering the installation cavity 20 through the plug interface 27. The movable arrangement here can be understood as the plug interface seal 270 and the tool terminal block 14 are not fixed, and the plug interface seal 270 is detachable.

[0245] Regarding the connection of the plug-in seal 270, in another feasible embodiment, the plug-in seal 270 is connected to the mating surface 211 of the battery pack 2. When the battery pack 2 is installed on the handheld high-pressure cleaner 1, the plug-in seal 270 inhibits external water from flowing into the installation cavity 20 of the battery pack 2 through the plug-in port 27.

[0246] As a second implementation method for waterproofing the charged bodies on the battery pack 2 in the disclosed embodiment, the battery pack 2 includes a waterproof and breathable structure 8 that completely covers the charged bodies (except the battery terminal block 25) in the installation cavity 20 of the battery pack 2. Specifically, the battery cell group 23, the battery pack control board 24, and the conductive parts electrically connecting the battery cell group 23 and the battery pack control board 24 are all wrapped by the waterproof and breathable structure 8. More specifically, the waterproof and breathable structure 8 is an independent integral structure. That is, each charged body is wrapped as a whole by the waterproof and breathable structure 8. Of course, the independent breathable structure can also be a split structure, and the charged bodies located in the battery pack 2 can also be wrapped separately.

[0247] In one possible implementation, Figure 7As shown, the waterproof and breathable structure 8 is a glue-filled body formed in the form of glue filling. In another feasible embodiment, as Figure 8 As shown, the waterproof and breathable structure 8 is a sealed box body housed in the installation cavity 20. The sealed box body is made of waterproof material. Specifically, each charged body is respectively configured with a sealed box body, for example, the battery cell group 23 is housed in the battery cell box body 81, the battery pack control board 24 is housed in the control board box body 82, and the display device 29 is housed in the display device box body 83. Of course, the sealed box body can also be an independent box body.

[0248] In addition, when the battery pack 2 and the handheld high-pressure cleaner 1 are matched, there is a matching gap between the handheld high-pressure cleaner 1 and the battery pack 2, in order to prevent the battery terminal row 25 from contacting with external water flow. In this embodiment, at least one of the handheld high-pressure cleaner 1 and the battery pack 2 is configured with a plug interface seal 270 that blocks the passage from the matching gap to the plug interface 27. The plug interface seal 270 can isolate the battery pack terminal 251 from the outside world and inhibit external water flow from flowing into the battery pack terminal 251 through the matching gap. The specific implementation scheme of the plug interface seal 270 can refer to the introduction of the first implementation scheme of waterproofing the charged body on the battery pack 2 when the working water pressure sprayed by the handheld high-pressure cleaner 1 is greater than 2.5Mpa and the voltage of the battery pack 2 detachably connected to the handheld high-pressure cleaner 1 is greater than 42.4V, which will not be repeated here.

[0249] As the third implementation method of waterproofing the charged body on the battery pack 2 in the embodiment of the present disclosure, in order to achieve that the battery pack 2 can be used in a variety of other electric tools without changing the composition structure of the battery pack 2, and also meet the waterproof requirements of the handheld high-pressure cleaner 1. Fig.17 As shown, in this embodiment, the handheld high-pressure cleaner 1 or the battery pack 2 can be selectively connected with a hollow waterproof cover 18, and the waterproof cover 18 includes a bag body 181 sleeved on the periphery of the battery pack 2 and a bag mouth 182 for the battery pack 2 to pass through. The periphery of the bag mouth 182 presses against the shell 10 to form a seal with the shell 10. When the battery pack 2 is plugged into the handheld high-pressure cleaner 1, the waterproof cover 18 is connected to the shell 10, and forms a sealed space with the shell 10, and the battery pack 2 is accommodated in the sealed space. The setting of the waterproof cover 18 here can be understood as putting on a waterproof overshoe for the battery pack 2. At this time, on the one hand, only the shell 10 of the high-pressure cleaner 1 needs to be waterproofed and sealed, and there is no need to set up a waterproof structure for the battery pack 2. The waterproof sealing of the high-pressure cleaner 1 is also achieved in only one step, and the waterproof structure is simpler; on the other hand, the structure of the battery pack 2 has not been changed, and the battery pack 2 can be used for other electric tools.

[0250] Furthermore, the first and second embodiments of waterproofing the corresponding electrical components contained in the housing 10 of the high-pressure cleaning machine 1 are both to place the corresponding electrical components in a sealed space. In order to ensure that the heat dissipation requirements of the motor 111 are met, the present invention proposes three embodiments for heat dissipation of the motor 111.

[0251] A first possible implementation method for heat dissipation of the motor 111 is as follows: Fig.18 As shown, the handheld high-pressure cleaner 1 further includes a heat dissipation pad 19 wrapped around the periphery of the motor 111. The heat dissipation pad 19 is supported between the motor 111 and the housing 10 to help transfer the heat of the motor 111 to the housing 10 through the heat dissipation pad 19. Preferably, the entire housing 10 or at least the housing 10 in the area corresponding to the motor 111 is made of a high heat dissipation material. Specifically, the high heat dissipation material can be aluminum. The advantage of such a design is that the motor 111 can be cooled quickly, so that the motor 111 will not be burned, and the service life of the motor 111 is extended.

[0252] As a second possible implementation method for heat dissipation of the motor 111, Fig.19As shown, the high-pressure cleaning machine 1 includes a first heat dissipation system 114 disposed around the motor 111. The first heat dissipation system 114 includes a fan 1141 capable of rotating to generate airflow, a heat dissipation pipe 1142, and a support frame 1143 that supports the heat dissipation pipe 1142 on the periphery of the motor 111. The fan 1141 may also be a structure provided by the motor 111. Preferably, the heat dissipation pipe 1142 is spiral and is circumferentially arranged around the periphery of the motor 111. In this embodiment, the heat dissipation pipe 1142 is arranged with a gap between the support frame 1143 and the motor 111. The heat dissipation pipe 1142 includes a first pipe opening 1144 connected to the water inlet 1041 of the handheld high-pressure cleaning machine 1 and a second pipe opening 1145 interconnected with the water inlet of the pump 113. External water flows from the water inlet 1041 into the heat dissipation pipe 1142, and flows out from the second pipe opening 1145 of the heat dissipation pipe 1142 into the body of the pump 113. When the handheld high-pressure cleaner 1 is in working state, the motor 111 drives the fan 1141 to rotate, and the airflow generated by the rotation of the fan 1141 transfers the heat of the motor 111 to the heat dissipation pipe 1142. The water flows continuously between the first nozzle 1144 and the second nozzle 1145 of the heat dissipation pipe 1142 to ensure that the handheld high-pressure cleaner can continuously dissipate heat for the motor 111 when in working state. Of course, the heat dissipation pipe 1142 may not be set in a spiral shape, but may be configured as a plurality of heat dissipation pipes 1142 arranged circumferentially around the periphery of the motor. The heat dissipation pipes 1142 may or may not be connected to each other. As long as the nozzle at one end of each heat dissipation pipe 1142 is connected to the water inlet 1041 of the handheld high-pressure cleaner 1, and the nozzle at the other end of each heat dissipation pipe 1142 is connected to the water flow inlet of the pump 113 of the high-pressure cleaner 1. In other words, it is ensured that the water in the heat dissipation pipe 1142 is continuously circulated cooling water. Furthermore, there may be more than one pipe opening connected to the water inlet 1041 of the handheld high-pressure cleaning machine 1. Furthermore, in order to ensure that the cooling water in the heat dissipation pipe 1142 can take away the heat of the motor 111 and achieve rapid heat dissipation, the straight-line distance between the heat dissipation pipe 1142 and the motor 111 is not greater than 20 cm.

[0253] As a third possible implementation method for heat dissipation of the motor 111, Fig. 20As shown, the handheld high-pressure cleaner 1 includes a second heat dissipation system 115 disposed around the motor 111. The second heat dissipation system 115 includes a heat sink 1151 connected to the pump 113 and a condenser 1152 connected to the heat sink 1151. The condenser 1152 includes a first condenser 1153 wound around the outer surface of the motor 111 and a second condenser 1154 connected between the first condenser 1153 and the heat sink 1151. In this embodiment, in order to ensure that the heat conduction and heat dissipation achieve the best effect, the first condenser 1153 is in direct contact with the outer surface of the motor 111, and the heat sink 1151 is also in direct contact with the outer surface of the pump 113, which can be understood as the first condenser 1153 is attached to the outer periphery of the motor 111, and the heat sink 1151 is attached to the outer periphery of the pump 113. Preferably, the first condenser 1153 is spiral. In order to increase the contact surface between the first condenser 1153 and the motor 111, so as to better extract the heat of the motor 111, in this embodiment, the cross section of the condenser 1152 is square. The heat conduction and heat dissipation principle of the condenser 1152 is described in detail as follows. Further, the condenser 1152 includes a hollow inner cavity (not shown), a porous capillary core layer (not shown) close to the inner cavity wall, and a working liquid located in the inner cavity that can fill the porous capillary core layer. The inner cavity can be operably set to negative pressure. The end of the condenser 1152 close to the heat sink 1151 is configured as a cooling end 1155, and the end close to the motor 111 is configured as an evaporation end 1156. When the motor 111 is in the starting state, the evaporation end 1156 is heated, the working liquid in the porous capillary core layer evaporates and vaporizes, and the steam flows to the cooling end 1155 under a small pressure difference, and releases heat at the cooling end 1155 to condense into cooling liquid. The cooling liquid then flows back to the evaporation end 1156 along the porous capillary core layer. In this way, the heat of the motor 111 is continuously transferred from the evaporation end 1156 to the cooling end 1155 to continuously dissipate the heat of the motor 111 .

[0254] As a fourth possible implementation method for heat dissipation of the motor 111, Fig.21As shown, the high-pressure cleaning machine 1 includes a third heat dissipation system 116 disposed around the motor 111. The third heat dissipation system 116 includes a fan 1161 capable of rotating to generate airflow, a heat sink assembly 1162, and a water pipe branch 1160 connected to the heat sink assembly. The fan 1161 may also be a structure provided by the motor 111. The heat sink assembly 1162 includes a support member 1163 and a plurality of heat sinks 1164 connected to the support member 1163. In this embodiment, two water pipe branches are provided, and the two water pipe branches can be arranged symmetrically at 180 degrees. The two water pipe branches are interlaced with the support member. One end of each branch pipe is connected to the water inlet 1041, and the other end of each branch pipe is connected to the inner cavity of the pump. The cooling water flows continuously in each branch pipe to ensure that the temperature of the heat sink assembly is reduced. When the high-pressure cleaning machine 1 is in operation, the motor 111 drives the fan 1161 to rotate, and the airflow generated by the rotation of the fan 1161 transfers the heat of the motor 111 to the heat sink assembly 1162 to achieve heat dissipation for the motor 111 .

[0255] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A battery pack (2) detachably attached to an electric tool provided with a housing terminal (142), the battery pack (2) comprising: Package cover (21); A package bottom (22) is joined with the package cover (21) to form a battery package shell; A battery cell group (23) for charging and discharging, the battery cell group (23) comprising a plurality of battery cells (231), each battery cell (231) being provided with a battery cell body (2311) and a first electrode terminal (2312) located on one side of the battery cell body (2311) and a second electrode terminal (2313) located on the other side of the battery cell body (2311); A battery terminal block (25) electrically connected to the battery cell group (23), the battery terminal block (25) comprising a battery pack terminal (251) electrically connected to the housing terminal (142) and a terminal seat (252) supporting the battery pack terminal (251); An installation cavity (20) is defined in the battery pack housing and accommodates the battery cell group (23) and the battery terminal row (25), the installation cavity (20) being formed with an insertion port (27) for the housing terminal (142) to be inserted for electrical connection with the battery pack terminal (251); A connection release device (26) capable of driving the battery pack (2) and the electric tool to lock and connect or release and disengage; The invention is characterized in that a sealing component (4) is provided in the installation cavity (20) to block the passage from the plug-in port (27) to the battery cell group (23); The battery pack (2) further comprises a battery pack housing seal (28) for blocking communication between the outside and the mounting cavity (20), wherein the battery pack housing seal (28) is arranged at the junction of the pack cover (21) and the pack bottom (22); The connection and release device (26) is mounted on the battery pack housing, and the connection and release device (26) is isolated outside the mounting cavity (20); The connection release device (26) is detachably mounted on the package cover (21) and is capable of moving relative to the package cover (21) to achieve locking connection or release of the battery pack (2) and the electric tool; The cover (21) has a locking cavity (214) sunken on its outer surface which at least partially surrounds the connection and release device (26); the locking cavity (214) forms a movable space for the connection and release device (26) to move; the locking cavity (214) and the installation cavity (20) are not connected to each other.

2. The battery pack (2) according to claim 1, characterized in that: The sealing member (4) is compressed between the plug-in port (27) and the terminal seat (252).

3. The battery pack (2) according to claim 2, characterized in that: The thickness of the sealing component (4) in a free state is greater than the gap between the terminal seat (252) and the plug-in port (27).

4. The battery pack (2) according to claim 1, characterized in that: The terminal seat (252) is constructed as a waterproof box, and the waterproof box is provided with an opening for the shell terminal (142) to be inserted in the direction facing the plug interface (27). The sealing component (4) is sealed between the inner wall of the battery pack (2) and the waterproof box to block the assembly gap between the waterproof box and the inner wall of the battery pack (2).

5. An electric tool assembly, comprising a battery pack (2) as claimed in claims 1 to 4 and an electric tool detachably connected to the battery pack (2), the electric tool comprising: Housing (10); A tool terminal block (14) connected to the housing (10), the tool terminal block (14) comprising a housing terminal (142) and a base (141) supporting the housing terminal (142); The functional component has a motor (111) for providing driving force for the electric tool.

6. The electric tool assembly according to claim 5, characterized in that: The electric tool is a high-pressure cleaning machine (1), wherein the housing (10) comprises a handle (103) for holding, a main body (104) arranged at an angle to the handle (103), a water inlet (1041) for receiving water from an external source, and a water outlet (102) for conveying water to the outside.

7. The electric tool assembly according to claim 6, characterized in that: The main body (104) is arranged at one end of the handle (103), and the battery pack (2) is arranged at the other end of the handle (103).

8. The electric tool assembly according to claim 5, characterized in that: The functional component comprises a pump (113) driven by the motor (111) to deliver water outwards, and the functional component is arranged in the housing (10).

9. The electric tool assembly according to claim 8, characterized in that: The working water pressure outputted outward by the high-pressure cleaning machine (1) is 0.3 MPa to 5 MPa.

10. The electric tool assembly according to claim 5, characterized in that: The number of the battery packs (2) is configured to be one or more, and the voltage of each battery pack (2) is 18 to 42V.

Images