CN110768320A - Adapter and portable power supply - Google Patents

Adapter and portable power supply Download PDF

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Publication number
CN110768320A
CN110768320A CN201811621412.1A CN201811621412A CN110768320A CN 110768320 A CN110768320 A CN 110768320A CN 201811621412 A CN201811621412 A CN 201811621412A CN 110768320 A CN110768320 A CN 110768320A
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CN
China
Prior art keywords
adapter
battery pack
output
conversion circuit
voltage conversion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811621412.1A
Other languages
Chinese (zh)
Inventor
张月祥
滕之海
吴秋远
项英典
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Chervon Industry Co Ltd
Original Assignee
Nanjing Chervon Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Chervon Industry Co Ltd filed Critical Nanjing Chervon Industry Co Ltd
Publication of CN110768320A publication Critical patent/CN110768320A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
    • H05K7/20918—Forced ventilation, e.g. on heat dissipaters coupled to components the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention discloses an adapter for making a battery pack output alternating current, the battery pack can at least supply power for an electric tool, the adapter comprises: the shell comprises a matching part, a first side part and a second side part, wherein the first side part and the second side part are arranged on two sides of the matching part; the adapter interface is arranged on the matching part so that the adapter can be detachably and electrically connected with the battery pack; at least one output interface for outputting a current; the voltage conversion circuit is connected between the adapter interface and the output interface and is used for enabling the output interface to output at least one voltage different from the voltage of the battery pack; the casing still includes first end and the second end that sets up at cooperation portion both ends and lie in between first side and the second side, is formed with the ventilation hole that carries out air intercommunication with the casing inside on at least one of first end and second end. The adapter disclosed by the invention improves the utilization rate of the battery pack, has a wide application scene and has higher safety.

Description

Adapter and portable power supply
Technical Field
The invention relates to an adapter and a portable power supply comprising the same.
Background
With the development of battery technology, electric tools are gradually replacing engine tools. In order to achieve operational results and endurance times similar to that of engine operation, the power rating and capacity of battery packs adapted to power electric tools are also increasing.
On the one hand, the battery pack will be idle in situations where the power tool is not needed.
On the other hand, in some scenarios, such as work and travel outdoors, an ac or dc power source is often required to power some work or facilities. The traditional portable power supply is powered by the internal electric core group, and once the electric energy of the internal electric core group is consumed, the power supply can not be continued.
The existing adapter is adapted to other batteries with lower output voltage, such as mobile phone batteries, dry batteries and the like; or the adapter converts the battery power to a lower output voltage output, such as +5V, etc. If the adapter is connected or outputs a larger voltage, potential safety hazards are brought.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides an adapter which enables a battery pack suitable for an electric tool to output electric energy and has high safety.
An adapter for enabling a battery pack to output power, the battery pack being capable of powering at least one power tool, the adapter comprising: the shell comprises a matching part, a first side part and a second side part, wherein the first side part and the second side part are arranged on two sides of the matching part; the adapter interface is arranged on the matching part so that the adapter can be detachably and electrically connected with the battery pack; at least one output interface for outputting a current; the voltage conversion circuit is connected between the adapter interface and the output interface and is used for enabling the output interface to output at least one voltage different from the voltage of the battery pack; wherein, the casing still includes sets up at cooperation portion both ends and is located first side and the second end between the second side, is formed with the ventilation hole that carries out air intercommunication with the casing inside on at least one of first end and second end.
Further, the first end portion is formed with a plurality of first vent holes,
the second end portion is formed with a plurality of second vent holes,
the total area of the first ventilation holes is smaller than that of the second ventilation holes.
Further, the ratio of the total area of the first vent holes to the surface area of the end portion of the first end portion ranges from 50% to 90%.
Further, the ratio of the total area of the second vent holes to the surface area of the end portion of the second end portion ranges from 50% to 90%. .
Further, the output interface is located in the first end or the second end where the end surface area is larger.
Further, the adapter further comprises: and a fan disposed at a side of the inside of the case adjacent to the first vent hole to accelerate the flow of the air between the first vent hole and the second vent hole.
Further, the fan is turned on when the output power of the adapter is 100W or more.
Further, the adapter further comprises: the radiating fin is used for radiating heat for the voltage conversion circuit; the cooling fin is positioned on one side of the interior of the shell close to the second end part.
Further, the voltage conversion circuit includes: the first voltage conversion circuit is used for converting the direct current output by the battery pack into alternating current; the output interface includes: and the alternating current output interface is connected with the first voltage conversion circuit to output alternating current.
Further, the voltage conversion circuit includes: a second voltage conversion circuit for causing the battery pack to output a direct current different from a voltage of the battery pack; the output interface includes: and the direct current output interface is connected with the second voltage conversion circuit to output direct current with the output voltage lower than the voltage of the battery pack.
Further, the adaptation interface comprises: the electric connecting terminal is electrically connected with the battery cell of the battery pack;
and the connecting structure is used for connecting the shell and the shell of the battery pack.
Further, the connection structure includes: and the guide rail is used for guiding the battery pack to be connected to the other end of the second end part through one end of the first end part in a sliding manner.
Further, the adapter further comprises: the handle is rotatable about an axis, the axis being proximate the first end.
Further, a locking structure is arranged on one side of the adapting part close to the first end part to lock the battery pack and the adapter.
Further, the adapter further comprises: and the main control switch is used for switching on or off the electrical connection between the adapter and the battery pack.
Further, the value range of the ratio of the maximum output power of the adapter to the reference value of the adapter is more than or equal to 0.1w/cm 3.
Further, the adapter further comprises: and the dustproof net is arranged inside the shell and close to the second end part.
A portable power supply apparatus comprising: a battery pack capable of powering at least one power tool; an adapter for enabling power output by the battery pack; wherein, the adapter includes: the shell comprises a matching part, a first side part and a second side part, wherein the first side part and the second side part are arranged on two sides of the matching part; the adapter interface is arranged on the matching part so that the adapter can be detachably and electrically connected with the battery pack; at least one output interface for outputting a current; the voltage conversion circuit is connected between the adapter interface and the output interface and is used for enabling the output interface to output at least one voltage different from the voltage of the battery pack; wherein, the casing still includes sets up at cooperation portion both ends and is located first side and the second end between the second side, is formed with the ventilation hole that carries out air intercommunication with the casing inside on at least one of first end and second end.
The adapter of the invention can convert the electric energy of the battery pack suitable for the electric tool into the electric energy with larger output voltage for output, thereby improving the utilization rate of the battery pack. In addition, this adapter can be with the electric energy conversion of battery package alternating current output, and the application scene is wide, and the adapter security is higher.
Drawings
Fig. 1 is an overall structural view of a portable electric power system;
fig. 2 is a perspective view of the battery pack of fig. 1;
FIG. 3 is a schematic view of the adapter of FIG. 1 in combination with a battery pack;
FIG. 4 is a block diagram of one perspective of the adapter of FIG. 1;
FIG. 5 is a block diagram of another perspective of the adapter of FIG. 1;
FIG. 6 is an internal block diagram of the adapter of FIG. 3;
FIG. 7 is an exploded view of the circuit board, heat sink and connecting tabs of FIG. 3;
fig. 8 is a block diagram of the portable power system of fig. 1 in a free state;
fig. 9 is a block diagram of the portable power system of fig. 1 in a quiescent state;
FIG. 10 is a block diagram of the locking structure of the adapter of FIG. 3;
FIG. 11 is a structural view of the locking portion of FIG. 10;
fig. 12 is a block diagram of the internal circuitry of the adapter of fig. 4.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
Referring to fig. 1, a portable electrical energy device 100 is shown, comprising: an adapter 200 and a battery pack 300.
The battery pack 300 can supply power to a dc power tool. Specifically, the battery pack 300 includes: a battery cell (not shown) and a battery pack case 310, the battery cell (not shown) being accommodated in the battery pack case 310.
The battery cell (not shown) is used to store energy, which can be repeatedly charged and discharged. The battery core (not shown) may be selected from a lithium ion battery, and may also be selected from a graphene battery. The battery pack case 310 serves to accommodate a battery cell (not shown) and other components in the battery pack 300, and the battery pack case 310 is formed with a coupling portion 311 by which the battery pack 300 can be coupled to an electric power tool.
The battery pack 300 further includes a plurality of electrode connection terminals for electrically connecting at least the battery cells (not shown) to an external circuit. For example, in electrical connection with a circuit for driving the motor in the power tool or a charging circuit in the charger.
The battery pack 300 may also include other types of connection terminals, such as communication terminals for communication, for enabling signal interaction of the battery pack 300 with a power tool and/or charger.
In addition, the battery pack 300 further includes a circuit board 225, a controller, and some corresponding detection modules. The circuit board 225 is mainly used to construct an internal circuit of the battery pack 300, on which electronic components for realizing various electric functions are mounted and connected. The controller is mainly used to control the battery pack 300, and the detection module is mainly used to detect some electrical and physical parameters of the battery pack 300, such as the current, voltage, or temperature of a battery cell (not shown) of the battery pack 300. Specifically, the circuit board 225, the controller, and the detection module form a circuit that allows the battery pack 300 to have an over-discharge or an over-charge, and allows the battery pack 300 to have limited or wireless communication with other external devices.
The rated voltage of the battery pack 300 is 30V or more and 350V or less. More specifically, the rated voltage of the battery pack 300 has a value range of: 30V to 50V, 50V to 85V, 85V to 100V, 100V to 200V or 200V to 350V. As one embodiment, the rated voltage of the battery pack 300 is 56V.
The weight of the battery pack 300 is 1kg or more and 10kg or less. More specifically, the value range of the weight of the battery pack 30020 is: 1kg to 2kg, 2kg to 2.5kg, 2.5kg to 3kg, 3k to 4kg, 4kg to 5kg, 5kg to 6kg, 6kg to 7kg, 7kg to 8kg, 8kg to 9kg, 9kg to 10 kg.
Referring to fig. 1, the battery pack 300 further includes a power display unit 320 for displaying a remaining power of the battery pack 300. Specifically, the power display unit 320 is in telecommunication connection with the circuit board 225 and the connection terminals of the battery pack 300, respectively. As one of the embodiments, the power display unit 320 is disposed on the upper surface of the battery pack 300.
The adapter 200 can incorporate the battery pack 300 described above such that the battery pack 300 outputs ac power and/or dc power through the adapter 200.
The adapter 200 includes a housing 210, and the housing 210 can form a portion that fits with the coupling portion 311 of the battery pack 300, i.e., a fitting portion 212, so that the battery pack 300 can be detachably coupled to the adapter 200.
For ease of explanation and understanding, the directions "up, down, front, back, left, and right" are illustrated and defined based on the perspective view of the portable electric power device 100 when it is placed, as shown in fig. 1. That is, as shown in fig. 1, when the portable electric energy device 100 is placed on a plane, a surface of the adaptor 200 contacting the plane is defined as a lower surface of the adaptor 200, and another surface opposite to the lower surface of the adaptor 200 is defined as an upper surface of the adaptor 200. A surface of the battery pack 300 contacting the plane is defined as a lower surface of the battery pack 300, and the other surface opposite to the lower surface of the battery pack 300 is defined as an upper surface of the battery pack 300.
Referring to fig. 12, the adapter 200 further includes a first voltage conversion circuit 270 and a second voltage conversion circuit 271 provided within the housing 210. The first voltage conversion circuit 270 is used for converting the dc power output by the battery pack 300 into ac power for output. In some embodiments, the first voltage conversion circuit 270 is an inverter circuit, which can convert the dc power output by the battery pack 300 into ac power of 110-130V for output. In some embodiments, the first voltage conversion circuit 270 can convert the DC power output by the battery pack 300 into AC power of 210-230V for output. In some embodiments, the first voltage conversion circuit 270 can convert the dc power output by the battery pack 300 into ac power of 110-130V and can also convert the dc power output by the battery pack 300 into ac power of 210-230V.
The second voltage conversion circuit 271 is used for converting the dc power output by the battery pack 300 into dc power having a certain voltage and outputting the dc power. In some embodiments, the second voltage conversion circuit 271 is a rectifying circuit, and the second voltage conversion circuit 271 can convert the dc power output by the battery pack 300 into a dc power output of + 5V. In some embodiments, the second voltage conversion circuit 271 can convert the dc power output by the battery pack 300 into a dc power output of + 12V. In other embodiments, the second voltage conversion circuit 271 can convert the dc power output by the battery pack 300 into a +19V dc power output.
The adapter 200 further includes an AC power output interface 220 for outputting AC power, thereby enabling the portable electric power apparatus 100 to function as an AC power source. The ac output interface 220 is electrically connected to the first converting circuit to output ac power. In some embodiments, AC power output interface 220 is configured as an electrical outlet as shown in fig. 4, which is designed to be of the same size as a local general mains outlet, enabling the portable power supply system to power general AC consumers. In some embodiments, the adapter 200 includes an AC output interface 220 for outputting 110-130V AC or 210-230V AC. In some embodiments, the adapter 200 includes two AC power output interfaces 220 for outputting 110-130V AC power or 210-230V AC power, respectively. In some embodiments, ac power output interface 220 is disposed on a lower surface of adapter 200.
The adapter 200 also includes a dc output interface 221 for causing the adapter 200 to output dc power. In some embodiments, the dc output interface 221 may be configured as a +5V USB interface as shown in fig. 1. In some embodiments, the dc output interface 221 may be configured in other forms, such as a 12V vehicle power interface, an interface outputting other voltages, such as 19V, 36V, and the like. As one example, the voltage of the dc output interface 221 should be lower than the rated voltage of the battery pack 300.
The ratio of the maximum output power of the adapter 200 to the weight of the adapter 200 is in a range of 0.03w/g or more.
The value range of the ratio of the maximum output power of the adapter 200 to the volume of the adapter 200 is greater than or equal to 0.1w/cm3. Further, the value range of the ratio of the maximum output power of the adapter 200 to the volume of the adapter 200 is greater than or equal to 0.2 g/cm3。
The ratio of the rated voltage of the battery pack 300 to the maximum output power of the adapter 200 ranges from 0.07v/w to 16 v/w. Specifically, the ratio of the rated voltage of the battery pack 300 to the maximum output power of the adapter 200 ranges from 0.07v/w to 0.67v/w, from 0.07v/w to 0.33v/w, from 0.15v/w to 0.67v/w, and from 0.15v/w to 0.33 v/w.
The projected area of the adapter 200 in the left-right direction is smaller than the projected area of the battery pack 300 in the left-right direction.
As shown in fig. 2 and 3, the adaptor 200 includes an adaptor interface 211 provided on a left surface of the housing 210 to detachably connect the adaptor 200 with the battery pack 300.
Adapter 200 includes electrical connection terminals 222 and connection structures 223. The electrical connection terminals 222 are used to connect with corresponding terminals in the battery pack 300, so that the adapter 200 is electrically connected with the battery pack 300 to transmit power and/or signals. In some embodiments, the electrical connection terminals are connected to positive and negative terminals of the battery pack 300, respectively, which are electrically connected to at least the first voltage conversion circuit 270 and/or the second voltage conversion circuit 271 in the adapter 200. The electrical connection terminals are connected as signal terminals with the signal terminals of the battery pack 300 to transmit signals.
Referring to fig. 3 to 5, in some embodiments, the electrical connection terminal 222 is fixedly mounted on the connection piece 261 bracket in a connection piece structure, and the connection piece bracket 224 is fixed to the PCB by screws. The leg ends of the electrical connection pieces 261 are soldered to the PCB board. The advantage of this is that, before electric connection piece 261 and PCB board welding, fix connection piece 261 support and PCB board through the screw, guaranteed the welding precision of connection piece 261 support, avoided the connection piece 261 support skew that probably leads to during the welding. The electrical connection terminals 222 are soldered to the PCB through the solder terminal bracket in the form of the electrical connection sheet 261, which saves the internal space of the adaptor 200 and makes the product structure of the adaptor 200 more compact. In some embodiments, to further improve the welding precision and increase the stress capacity of the welding end of the electrical connection sheet 261, the leg end of the electrical connection sheet 261 and the PCB are welded in two rows.
The connection structure 223 is used to connect the battery pack case 310 and the case 210. In some specific embodiments, the connecting structure includes two rails 226. The guide rails 226 can guide the battery pack 300 such that the battery pack 300 is slidably coupled to the other end of the adapter 200 from one end. The guide rails 226 are formed on both sides of a projection projecting forward relative to the periphery, respectively, and the electric connection terminals are provided on the upper end of the projection 227. The lug includes two parts that distribute about: the guide rail 226 is formed on both front and rear sides of the guide rail 226, and the boss portion protrudes further leftward from the guide rail 226.
Referring to fig. 1 to 5, the coupling portion 311 of the battery pack 300 is formed with a recess 331 capable of being engaged with the protrusion, and an electrical interface of the battery pack 300 is provided in the recess, the electrical interface including: and a terminal interface. The electrical connection terminals of the adapter 200 can be electrically connected with the terminals inside the battery pack 300 by inserting the corresponding terminal interfaces. Guide structures which are matched with the guide rails 226 are respectively arranged on two sides of the groove.
The battery pack 300 may be inserted into the adapter 200 in the general direction shown in fig. 2, with the engagement of the guide rails 226 with the guide structures and the engagement of the protrusions with the recesses limiting movement of the battery pack 300 in the side-to-side and front-to-back directions relative to the adapter 200. Therefore, the adapter 200 is required to vertically limit the battery pack 300, so that the battery pack 300 and the adapter 200 are integrated.
Referring to fig. 10 and 11, the adapter 200 further includes a locking structure 233 for limiting the insertion and extraction direction (i.e., the up-down direction) of the battery pack 300 to lock the battery pack 300 and the adapter 200 together. In some embodiments, the locking structures 233 are disposed on the same side of the plane of the electrical connection terminals of the adapter 200. More specifically, the locking structure 233 is disposed above the electrical connection terminals. The locking structure 233 is engaged with the card slot of the battery pack 300 to lock the battery pack 300 in the up-down direction and ensure good connection between the adapter 200 and the terminals of the battery pack 300.
The locking structure 233 includes an elastic member 234, a locking member 235, and a fixing member 236. Wherein the elastic member 234 is disposed at a position near the upper surface of the back of the housing 210. The elastic member 234 is compressed or ejected in the front-rear direction. In some specific embodiments, the resilient member 234 is a spring. In other embodiments, the elastic member 234 may be a flexible material with elasticity. The retainer 236 is positioned within and fixedly attached to the housing.
The locking member 235 protrudes at least partially from the housing 210. For convenience of description, the end of the locking member 235 connected to the elastic member 234 is defined as a fixed end, and the other end protruding from the housing 210 is defined as an elastic end. Specifically, the plane of the elastic end includes an elastic slope 237, an elastic plane 238 and an elastic arc 239. In the up-down direction, the elastic slope 237 is close to the upper end of the housing 210, and the elastic plane 238 is located between the elastic slope 237 and the elastic arc 239. When the adapter 200 is coupled to the battery pack 300 in the insertion direction shown in fig. 3, the elastic members 234 are compressed in the front-rear direction so that the locking members 235 are coupled to the catching grooves of the battery pack 300 to lock the adapter 200 with the battery pack 300.
This is advantageous in that when the adapter 200 is coupled to the battery pack 300 along the insertion direction of the direction shown in fig. 3, the elastic slope 237 near the upper end of the housing 210 contacts with the slot of the battery pack 300 first, and the elastic slope 237 ensures that the adapter 200 is coupled to the battery pack 300 smoothly, thereby improving the user experience. The arrangement of the elastic arc 239 increases the damping between the elastic piece 234 and the clamping groove of the battery pack 300, and avoids the separation of the adapter 200 and the battery pack 300 under the condition of non-manual pulling.
Referring to fig. 8 and 9, the adapter 200 further includes a handle 240 for a user to hold. The handle 240 includes supporting pieces 242 respectively provided at the front and rear surfaces of the housing 210 and a carrying piece 241 located between the two supporting pieces 242. The center line of the support 242 in the width direction of the front surface thereof is defined as the handle center line 101. Wherein the handle 240 has a first position (shown in fig. 8) in which the battery pack 300 and adapter 200 are in a free state as a whole and a second position (shown in fig. 9) in which the battery pack 300 and adapter 200 are in a rest state as a whole. The free state is a state in which the whole of the adapter 200 and the battery pack 300 is in balance when the user carries the handle 240. The rest state refers to a state in which the whole of the adapter 200 and the battery pack 300 is placed on a rest plane.
When the handle 240 is in the first position, the center of gravity of the adapter 200 is located on one side of the handle centerline 101. Specifically, when the handle 240 is in the first position, the center of gravity of the adapter 200 is located on a side of the handle centerline 101 proximate the second end. When the handle 240 is in the first position, the center of gravity of the adapter 200 is spaced from the handle centerline 101 by a distance of 6cm or less. Specifically, when the handle 240 is in the first position, the distance between the center of gravity of the adapter 200 and the handle centerline 101 may range from 4cm or less. When the handle 240 is in the first position, the center of gravity of the adapter 200 is spaced from the handle centerline 101 by a distance of 3cm or less.
When the handle 240 is in the first position, the ratio of the distance between the center of gravity O1 of the adapter 200 and the centerline 101 of the handle to the weight of the battery pack 300 is in the range of 0.04cm/kg or less. Further, when the handle 240 is in the first position, the ratio of the distance between the center of gravity O1 of the adapter 200 and the centerline 101 of the handle to the weight of the battery pack 300 is less than or equal to 0.03 cm/kg.
Such a design allows the user to conveniently carry the adapter 200 and battery pack 300 as a unit and maintain the relative stability of the unit during carrying.
When the handle 240 is in the second position, the upper surface portion of the carrier 241 is above the plane of the upper surface of the battery pack 300. This allows the overall configuration of the adapter 200 and battery pack 300 to be more compact for ease of assembly and storage.
The handle 240 can rotate around an axis, a projection point of the axis on the front surface of the housing 210 is defined as a central point O, and a range of a distance from the central point O to an end plane (i.e., an upper surface of the housing) where the first end surface of the housing 210 is located is less than or equal to 8 cm. Specifically, the range of the distance from the center point O to the plane where the end surface of the first end surface of the housing 210 is located is less than or equal to 6 cm. More specifically, the distance from the center point O to the plane on which the upper surface of the housing 210 is located has a value range of 5cm or less. The handle 240 is rotatable about an axis that is proximate to the upper surface of the housing 210.
The supporting member 242 is a retractable supporting member, and the carrying member 241 is an elastic carrying member. The support 242 has a gear adjusting function when rotated.
In some embodiments, the housing 210 further includes the adapter 200 and first and second sides 218, 219 disposed on either side of the adapter, and first and second ends 213, 214 disposed on either end of the adapter between the first and second sides 218, 219. At least one of the first end portion 213 and the second end portion 214 is formed with a vent hole that is in air communication with the inside of the housing. Specifically, referring to fig. 1, 4 and 5, the first end 213 is an upper end, and the second end 214 is a lower end.
The first end portion 213 is formed with a plurality of first ventilation holes 215, the second end portion 214 is formed with a plurality of second ventilation holes 216, and the total area of the first ventilation holes 215 is smaller than or equal to the total area of the second ventilation holes 216. In some embodiments, the ratio of the total area of the first vent holes 215 to the end surface area of the first end 213 ranges from 50% to 90%. Further, the ratio of the total area of the first vent holes 215 to the end surface area of the first end portion 213 ranges from 55% to 85%. Further, the ratio of the total area of the first vent holes 215 to the surface area of the end surface of the first end portion 213 ranges from 60% to 80%. Further, the ratio of the total area of the first vent holes 215 to the surface area of the end surface of the first end portion 213 ranges from 65% to 80%. Further, the ratio of the total area of the first vent holes 215 to the end surface area of the first end portion 213 ranges from 60% to 70%. This ensures that a larger vent area is formed at the first end surface for easy flow.
In some embodiments, the ratio of the total area of the second vent holes 216 to the end surface area of the first end 213 ranges from 50% to 90%. Further, the ratio of the total area of the second ventilation holes 216 to the end surface area of the first end portion 213 ranges from 55% to 85%. Further, the ratio of the total area of the second ventilation holes 216 to the end surface area of the first end portion 213 ranges from 60% to 80%. Further, the ratio of the total area of the second ventilation holes 216 to the end surface area of the first end portion 213 ranges from 65% to 75%. In some embodiments, ac output interface 220 and dc output interface 221 are both located at second end 214.
When the adapter is in operation, air flows through the second vent hole 216, enters the interior of the housing, flows along the longest path in the housing, and is discharged through the second vent hole 216. According to the design, the maximum air inflow of the adapter is ensured, meanwhile, the air flow can flow along the maximum length direction of the shell, the heat of components inside the adapter is taken away with the maximum efficiency, and the heat dissipation efficiency is improved.
The adapter includes a dust screen 217 for preventing dust from entering, the dust screen 217 being disposed inside the housing and proximate the second end 214 as shown with reference to fig. 6.
The adapter 200 also includes a fan 250, the fan 250 operating to accelerate cooling of components inside the adapter 200, such as the circuit board 225, electronic components, and the like. The fan 250 is disposed inside the case 210. In some embodiments, the fan 250 is disposed within the housing 210 on a side proximate the AC interface. In some embodiments, the adapter 200 includes two fans 250, each disposed side-by-side within the housing 210 and adjacent to the first vent 215. The fan 250 is disposed opposite to the first ventilation hole 215. The external airflow is accelerated by the fan 250, flows into the housing 210 through the second vent hole 216, flows through the circuit board 225, the heat sink 252, and the like, and flows out through the first vent hole 215, thereby removing heat from the inside of the adapter 200 to achieve a cooling effect.
When the output power of the adapter 200 is 100W or more, the fan 250 is turned on to reduce the energy loss of the battery pack 300.
As another embodiment, a battery pack protection circuit is provided in the adapter 200.
Referring to fig. 6 and 7, a circuit board 225 is provided in the case 210, and the semiconductor device 263 is connected to the circuit board 225. In some embodiments, the first voltage conversion circuit 270 and the second voltage conversion circuit 271 are disposed on the same circuit board 225. In other embodiments, the first voltage conversion circuit 270 and the second voltage conversion circuit 271 are disposed on different circuit boards 225, respectively. Specifically, a semiconductor device 263, such as a power switching tube, is disposed on the circuit board 225, and the heat sink 252 is used to dissipate heat from the semiconductor device 263. To make the adapter 200 as compact as possible, a horizontal profile heat sink 252 is used to dissipate heat from the semiconductor device 263. The connecting tab 261 is secured between the circuit board 225 and the heat sink 252. The connecting sheet 261 includes a connecting through hole and a connecting leg, the connecting through hole, the device through hole of the semiconductor device 263 and the through hole of the circuit board 225 are correspondingly disposed, and the screw sequentially passes through the connecting through hole, the device through hole, the circuit board 225 through hole and the heat sink 252 through hole, so that the heat sink 252, the semiconductor device 263 and the connecting sheet 261 are fixed on the circuit board 225. The solder connections on the circuit board 225 provide a more secure attachment of the connecting tab 261, thereby ensuring a secure attachment of the heat sink 252 to the circuit board 225. The influence of unstable fixation of the heat dissipation plate on the circuit performance in the prior art is avoided.
The adapter 200 further includes a main control switch 262 for turning on or off the electrical connection between the adapter 200 and the battery pack 300. After the battery pack 300 is coupled to the adapter 200, the user presses the main control switch 262 to connect the adapter 200 and the battery pack 300. More specifically, after the user presses the main control switch 262, the electrical connection between the adapter 200 and the battery pack 300 is conducted, and the power display unit 320 of the battery pack 300 is started to display the remaining power of the battery pack 300, so that the user can conveniently observe and use the battery pack. In some embodiments, the main control switch 262 may be a push button switch, a touch screen switch, or a shift switch.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims (16)

1. An adapter for enabling a battery pack to output power, the battery pack being capable of powering at least one power tool, the adapter comprising:
the shell comprises a matching part, a first side part and a second side part, wherein the first side part and the second side part are arranged on two sides of the matching part;
an adapter interface disposed at the mating portion to enable the adapter to be detachably and electrically connected with the battery pack;
the voltage conversion circuit is connected between the adapter interface and the output interface and used for enabling the output interface to output at least one voltage different from the voltage of the battery pack, and the voltage conversion circuit comprises a first voltage conversion circuit and a second voltage conversion circuit, wherein the first voltage conversion circuit is used for converting the direct current output by the battery pack into alternating current;
at least one output interface for outputting current, the at least one output interface comprising an alternating current output interface connected with the first voltage conversion circuit to output alternating current;
wherein the content of the first and second substances,
the casing still including set up in cooperation portion both ends and be located first side and second side between the first end and the second end, be formed with on at least one of them of first end and second end and carry out the ventilation hole that air intercommunication carries out with the casing inside.
2. The adapter of claim 1,
the vent holes include a first vent hole formed on the first end portion and,
a second vent hole formed on the second end portion,
the total area of the first vent holes is smaller than or equal to the total area of the second vent holes.
3. The adapter of claim 2,
the ratio of the total area of the first vent holes to the surface area of the end portion of the first end portion ranges from 50% to 90%.
4. The adapter of claim 2,
the ratio of the total area of the second vent holes to the surface area of the end portion of the second end portion ranges from 50% to 90%.
5. The adapter of claim 1,
the output interface is located at the one of the first end or the second end where the end surface area is larger.
6. The adapter of claim 2,
the adapter further comprises:
and a fan disposed inside the housing at a side close to the first vent hole to accelerate the flow of the air between the first vent hole and the second vent hole.
7. The adapter of claim 6,
the fan is started to rotate when the output power of the adapter is larger than or equal to 100W.
8. The adapter of claim 1,
the adapter further comprises:
the radiating fin is used for radiating heat for the voltage conversion circuit;
the heat sink is located inside the housing on a side proximate the second end.
9. The adapter of claim 1,
the voltage conversion circuit further includes:
a second voltage conversion circuit for causing the battery pack to output a direct current different from a voltage of the battery pack;
the output interface includes:
and the direct current output interface is connected with the second voltage conversion circuit to output direct current with output voltage lower than the voltage of the battery pack.
10. The adapter of claim 1,
the adaptation interface comprises:
the electric connecting terminal is electrically connected with the battery cell of the battery pack;
a connecting structure for connecting the case and the case of the battery pack;
the connection structure includes:
and the guide rail is used for guiding the battery pack to be connected to the other end of the second end part through one end of the first end part in a sliding manner.
11. The adapter of claim 1,
the adapter further comprises:
a handle rotatable about an axis, the axis being proximate the first end.
12. The adapter of claim 1,
the adapter further comprises:
a locking structure disposed on a side of the adapter portion near the first end portion to lock the battery pack with the adapter.
13. The adapter of claim 1,
the adapter further comprises:
and the main control switch is used for switching on or off the electrical connection between the adapter and the battery pack.
14. The adapter of claim 1,
the value range of the ratio of the maximum output power of the adapter to the reference power of the adapter is more than or equal to 0.1w/cm3。
15. The adapter of claim 1,
the adapter further comprises:
a dust screen disposed inside the housing and proximate the second end.
16. A portable power supply, comprising:
a battery pack capable of powering at least one power tool;
an adapter for enabling power output by the battery pack;
wherein the adapter comprises:
the shell comprises a matching part, a first side part and a second side part, wherein the first side part and the second side part are arranged on two sides of the matching part;
an adapter interface disposed at the mating portion to enable the adapter to be detachably and electrically connected with the battery pack;
the voltage conversion circuit is connected between the adapter interface and the output interface and used for enabling the output interface to output at least one voltage different from the voltage of the battery pack, and the voltage conversion circuit comprises a first voltage conversion circuit and a second voltage conversion circuit, wherein the first voltage conversion circuit is used for converting the direct current output by the battery pack into alternating current;
at least one output interface for outputting current, the at least one output interface comprising an alternating current output interface connected with the first voltage conversion circuit to output alternating current;
wherein the content of the first and second substances,
the casing still including set up in cooperation portion both ends and be located first side and second side between the first end and the second end, be formed with on at least one of them of first end and second end and carry out the ventilation hole that air intercommunication carries out with the casing inside.
CN201811621412.1A 2018-07-27 2018-12-28 Adapter and portable power supply Pending CN110768320A (en)

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CN2018108437575 2018-07-27

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CN201822243188.9U Active CN209731044U (en) 2018-07-27 2018-12-28 Adapter and portable power
CN201822243094.1U Active CN209419495U (en) 2018-07-27 2018-12-28 Adapter
CN201811621412.1A Pending CN110768320A (en) 2018-07-27 2018-12-28 Adapter and portable power supply

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CN201822243094.1U Active CN209419495U (en) 2018-07-27 2018-12-28 Adapter

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CN209419495U (en) 2019-09-20
CN209731085U (en) 2019-12-03
WO2020019687A1 (en) 2020-01-30
CN209731044U (en) 2019-12-03

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