CN210429929U - Lithium battery of electric tool - Google Patents
Lithium battery of electric tool Download PDFInfo
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- CN210429929U CN210429929U CN201921718787.XU CN201921718787U CN210429929U CN 210429929 U CN210429929 U CN 210429929U CN 201921718787 U CN201921718787 U CN 201921718787U CN 210429929 U CN210429929 U CN 210429929U
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- 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
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Abstract
The utility model relates to a lithium battery for an electric tool, which comprises a lower cover, an upper cover which is arranged on the lower cover and is matched with the lower cover, an accommodating space which is formed by the upper cover and the lower cover in an enclosing way, and a lithium battery pack which is arranged in the accommodating space and is arranged on the lower cover, the lithium battery pack comprises a battery fixing bracket with a plurality of accommodating holes, a plurality of lithium batteries accommodated in the accommodating holes, a battery connecting sheet which is connected with the plurality of lithium batteries and is electrically conducted, and a PCB (printed circuit board) which is electrically conducted with the battery connecting sheet, the plurality of lithium batteries are arranged in a matrix form, the partition walls between the adjacent four accommodating holes form fixing parts for fixing the plurality of lithium batteries, the battery fixing support is provided with at least one fixing part, and the lithium battery of the electric tool is simple in structure, reasonable in design and safer in charging and use.
Description
Technical Field
The utility model relates to a battery charging technology field specifically is an electric tool lithium cell.
Background
With the continuous development of new energy science and technology, lithium ion batteries are widely applied to various products at present, and the lithium ion batteries work by moving lithium ions between a positive electrode and a negative electrode. In the process of charging and discharging, lithium ions are inserted and de-inserted between two electrodes in a reciprocating manner, and the lithium ion battery is a representative of modern high-performance batteries, is energy-saving and environment-friendly, and is widely applied.
The electric tool powered by the battery pack is usually short in service time, so that the battery pack needs to be charged frequently, and the existing battery pack is not compact in structural arrangement, so that the whole volume of the battery pack is large, and the battery pack is difficult to apply to the electric tool conveniently; in addition, structural configuration in the battery package is unreasonable, because electric tool needs often to remove, also can produce violent vibrations or vibrations simultaneously, if the battery can not be fine fix in the battery package, can take place that the battery is not hard up to drop, influences life, can have great potential safety hazard in the use.
SUMMERY OF THE UTILITY MODEL
To the not enough of existence on the prior art, the utility model provides a simple structure, reasonable in design charge and use all safer electric tool lithium cell charger.
In order to achieve the above object, the present invention can be realized by the following technical solutions: a lithium battery for electric tools comprises a lower cover, an upper cover which is arranged on the lower cover and matched with the lower cover, an accommodating space which is formed by enclosing the upper cover and the lower cover, a lithium battery pack which is arranged in the accommodating space and is arranged on the lower cover, a control panel module which is arranged above the lithium battery pack, a charging and discharging contact terminal which is arranged above the control panel module and is positioned at one side opposite to the charging and discharging contact terminal, a terminal pressing piece which is arranged above the charging and discharging contact terminal and a radiating fin which is arranged above the charging and discharging contact terminal, wherein the control panel module, the charging and discharging contact terminal, the terminal pressing piece and the radiating fin are all positioned in the accommodating space, the lithium battery pack comprises a battery fixing support with a plurality of accommodating holes, a plurality of lithium batteries which are accommodated in the accommodating holes, a plurality of connecting sheets which are connected with the plurality of lithium batteries and are electrically conducted, and a PCB which is, the lithium battery fixing support is characterized in that the lithium batteries are arranged in a matrix mode, the partition walls between the four adjacent accommodating holes are provided with fixing parts for fixing the lithium batteries, and the battery fixing support is provided with at least one fixing part.
Further: the battery fixing support comprises a first fixing frame and a second fixing frame opposite to the first fixing frame, the lithium battery pack is located between the first fixing frame and the second fixing frame, the fixing portion extends from at least one of the first fixing frame and the second fixing frame to the other fixing frame, and the fixing portion is connected with the first fixing frame or the second fixing frame through a fastening piece.
Further: the battery connecting piece comprises a first connecting piece and a second connecting piece, the PCB comprises a first PCB and a second PCB, the first connecting piece is located between the first PCB and the first fixing frame, and the second connecting piece is located between the second PCB and the second fixing frame.
Further: the first connecting sheet is clamped in the accommodating hole, the first PCB is fixed on the first fixing frame, the second connecting sheet is clamped in the accommodating hole, and the second PCB is fixed on the second fixing frame.
Further: the first fixing frame comprises a rectangular main body part, the accommodating holes are formed in the main body part and close to the supporting part, the side wall of the control panel module extends inwards to form the supporting part, and the control panel module is connected to the supporting part in an accepting mode.
Further: the supporting part comprises a first supporting part and a second supporting part, the first supporting part is arranged on the first fixing frame, the second supporting part is arranged on the second fixing frame, and the first supporting part and the second supporting part are in contact with each other.
Further: the first fixing frame is close to first supporting part department is equipped with first terminal installation department, the second fixing frame is close to second supporting part department is equipped with second terminal installation department, first terminal installation department with the second terminal installation department forms and is used for installing the terminal installation department of charge-discharge contact terminal.
Further: the upper surface of the first side of the upper cover is provided with a battery charging and discharging port, the first side of the upper cover corresponds to the opposite side of the control panel module, the battery charging and discharging port is provided with a gap communicated with the accommodating space, and the charging and discharging contact terminal is exposed in the gap.
Further: the number of a plurality of lithium batteries is 14 and the total capacity of a plurality of lithium batteries is 2AH or the number of a plurality of lithium batteries is 28 and the total capacity of a plurality of lithium batteries is 4 AH.
Further: the extending direction of the fixing part is vertical to the connecting direction of the upper cover and the lower cover.
Compared with the prior art, the utility model discloses an electric tool lithium cell has following advantage at least: the lithium battery pack of the lithium battery of the electric tool is arranged on the lower cover, and the control panel module, the charging and discharging contact terminals, the terminal pressing piece and the radiating fins are directly or indirectly arranged on the lithium battery pack, so that the accommodating space formed between the lower cover and the upper cover can be fully utilized, the structural design is more compact, the structure is simple and reasonable, the space is saved, the lithium battery pack can quickly radiate heat, and the radiating efficiency is high; the electric tool lithium battery has the battery fixing support who accepts and fix lithium cell group, and a plurality of sections lithium batteries are the matrix and arrange, and the interval wall between four adjacent accepting holes is formed with fixedly the fixed part of a plurality of sections lithium batteries, the battery fixing support has at least one fixed part for lithium cell group is fixed more firm, is difficult to not hard up, makes to charge and uses all safer.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a schematic view of a lithium battery for an electric tool according to a first embodiment of the present invention;
fig. 2 is an exploded view of a lithium battery for an electric tool according to a first embodiment of the present invention;
fig. 3 is a front view of a lithium battery for an electric tool according to a first embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;
fig. 5 is an exploded view of a lithium battery pack according to a first embodiment of the present invention;
fig. 6 is a schematic view of a lithium battery for an electric tool according to a second embodiment of the present invention;
fig. 7 is an exploded view of a lithium battery for an electric power tool according to a first embodiment of the present invention;
fig. 8 is a front view of a lithium battery for an electric tool according to a second embodiment of the present invention;
fig. 9 is a sectional view taken along a-a in fig. 8.
Fig. 10 is an exploded view of a lithium battery pack according to a second embodiment of the present invention.
Description of reference numerals: 1. a lower cover; 10. a first receiving cavity; 11. a side surface; 12. a groove; 13. a protrusion; 2. an upper cover; 20. a second receiving cavity; 21. a battery charge and discharge port; 22. an electric quantity display window; 23. a sticking part; 24. pasting a piece of PET top paster; 25. a gap; 3. a control panel module; 4. a heat sink; 5. a charge-discharge contact terminal; 6. a terminal pressing member; 7. a lithium battery pack; 71. a first fixing frame; 710. a first main body portion; 711. a first side wall; 712. a first support section; 713. a first terminal mounting portion; 714. a first receiving hole; 715. a PCB board mounting part; 72. a lithium battery; 73. a first connecting piece; 74. a first PCB board; 75. a second fixing frame; 750. a second main body portion; 751. a second side wall; 752. a second support portion; 753. a second terminal mounting portion; 754. a second receiving hole; 755. a fixed part; 76. a second connecting sheet; 77. a second PCB board; 8. PET electric quantity display paster; 1', a lower cover; 10', a first housing chamber; 11', side faces; 12', a groove; 13', a bulge; 2', an upper cover; 20' and a second accommodating cavity; 21', battery charge and discharge ports; 22', a power display window; 23', a sticking part; 24', PET top decal; 25', a gap; 3', a control panel module; 4', a heat radiating fin; 5', charge and discharge contact terminals; 6', a terminal pressing member; 7', a lithium battery pack; 71', a first fixing frame; 710', a first body portion; 711', a first side wall; 712', a first support part; 713', a first terminal mounting portion; 714', a first receiving hole; 715' and a PCB board mounting part; 72', a lithium battery; 73', a first connecting piece; 74', a first PCB board; 75' and a second fixing frame; 750', a second body portion; 751', a second side wall; 752', a second support; 753' second terminal mounting portion; 754', a second receiving hole; 755', fixed part; 76', a second connecting sheet; 77', a second PCB board; 8', PET electric quantity display paster.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1 to 5, which illustrate a lithium battery for an electric tool of the present invention, the lithium battery for an electric tool comprises a lower cover 1, an upper cover 2 mounted on the lower cover 1 and engaged with the lower cover 1, a receiving space defined by the upper cover 2 and the lower cover 1, a lithium battery pack 7 disposed in the receiving space and mounted on the lower cover 1, a control board module 3 mounted above the lithium battery pack 7, a charge/discharge contact terminal 5 disposed above the control board module 3 and on an opposite side thereof, a terminal pressing member 6 disposed above the charge/discharge contact terminal 5, and a heat sink 4 disposed above the charge/discharge contact terminal 5, wherein the control board module 3, the charge/discharge contact terminal 5, the terminal pressing member 6, and the heat sink 4 are all disposed in the receiving space, a battery charge/discharge port 21 is disposed on an upper surface of a first side of the upper cover 2, the first side of the upper cover 2 corresponds to the opposite side of the control board module 3, the battery charge/discharge port 21 has, the charge and discharge contact terminal 5 is exposed in the slit 25.
The lithium battery pack of the electric tool lithium battery is arranged on the lower cover 1, and the control panel module 3, the charging and discharging contact terminal 5, the terminal pressing piece 6 and the radiating fin 4 are directly or indirectly arranged on the lithium battery pack 7, so that the accommodating space formed between the lower cover 1 and the upper cover 2 can be fully utilized, the structural design is more compact, the structure is simple and reasonable, the space is saved, the lithium battery pack 7 can quickly dissipate heat, and the heat dissipation efficiency is high; the battery charging and discharging port 21 is arranged on the first side of the upper cover 2 and located on the same side as the charging and discharging contact terminal 5, the battery charging and discharging port 21 is provided with a gap 25 communicated with the accommodating space, and the charging and discharging contact terminal 5 is exposed in the gap 25, so that the contact between the charging and discharging contact terminal 5 and the outside can be reduced, and unnecessary danger or damage to the charging and discharging contact terminal 5 is avoided.
The electric tool lithium battery has the battery fixing support who accepts and fix lithium cell group 7, and a plurality of lithium cell 7 are the matrix and arrange, and the interval wall between four adjacent accepting holes is formed with the fixed part of fixed a plurality of lithium cell 72, and the battery fixing support has at least one fixed part 755 for lithium cell group 7 is fixed more firm, is difficult to become flexible, makes to charge and uses all safer.
As shown in fig. 1 to 5, the upper cover 2 has a second side opposite to the first side, and the second side is provided with a power display window 22. The top surface of electric quantity display window 22 and upper cover 2 is the slope setting and electric quantity display window 22 coats and is stamped PET electric quantity display sticker 8, and the top surface of upper cover 2 is being equipped with pasting portion 23 near second side department, and pasting portion 23 coats and is stamped PET top sticker 24. The top surface of the upper cover 2 is approximately plane, the pasting part 23 is a groove sinking downwards from the top surface, the PET top sticker 24 is pasted in the groove, and the pasting part 23 can be used for pasting nameplates or logos and the like.
The lower cover 1 has a side surface 11 connecting the first side and the second side, and a concave groove 12 is formed in the middle of the side surface 11. The inner wall surface of the groove 12 at the top is provided with a protrusion 13 extending downwards, and the outer surface of the protrusion 13 is inclined outwards from top to bottom. The projection of the groove 12 on the side surface is in a trapezoid shape, and the length of the lower bottom edge of the trapezoid is larger than that of the upper top edge.
The joint of the upper cover 2 and the lower cover 1 is fixedly connected through screws. The lower cover 1 is arranged in a shell, a first accommodating cavity 10 is arranged in the middle of the lower cover, the upper cover 2 is arranged in a shell, a second accommodating cavity 20 is arranged in the middle of the upper cover, and the first accommodating cavity 10 and the second accommodating cavity 20 form an accommodating space. The lithium battery pack 7 is arranged in the first accommodating cavity 10, and the control panel module 3, the charging and discharging contact terminal 5, the terminal pressing piece 6 and the radiating fin 4 are all positioned in the second accommodating cavity 20. The charge and discharge contact terminal 5 is exposed in the gap 25 and the charge and discharge contact terminal 5 and the gap 25 are located at the same height in the horizontal direction, so that the plug-in unit can be conveniently contacted and matched with the charge and discharge contact terminal 5.
As shown in fig. 5, the lithium battery pack 7 includes a battery fixing bracket having a plurality of receiving holes, a plurality of lithium batteries 72 received in the receiving holes, a battery connecting sheet electrically connected to the plurality of lithium batteries 72, and a PCB electrically connected to the battery connecting sheet, wherein the plurality of lithium batteries 72 are arranged in a matrix, a fixing portion 755 for fixing the plurality of lithium batteries 7 is formed on a partition wall between four adjacent receiving holes, and the battery fixing bracket has at least one fixing portion 755.
The battery fixing support comprises a first fixing frame 71 and a second fixing frame 75 opposite to the first fixing frame 71, the lithium battery pack 7 is located between the first fixing frame 71 and the second fixing frame 75, a fixing portion 755 extends from at least one of the first fixing frame 71 or the second fixing frame 75 to the other, and the fixing portion 755 is connected with the first fixing frame 71 or the second fixing frame 75 through a fastener.
The battery connecting piece comprises a first connecting piece 73 and a second connecting piece 76, the PCB comprises a first PCB 74 and a second PCB 77, the first connecting piece 73 is positioned between the first PCB 74 and the first fixing frame 71, and the second connecting piece 76 is positioned between the second PCB 77 and the second fixing frame 75.
The first fixing frame 71 includes a rectangular first main body portion 710 and a first receiving hole 714 provided on the first main body portion 710, the second fixing frame 75 includes a second main body portion 750 and a second receiving hole 754 provided on the second main body portion 750, the first connecting piece 73 is clamped in the first receiving hole 714, the first PCB 74 is fixed on the first fixing frame 71, the second connecting piece 76 is clamped in the second receiving hole 754, and the second PCB 77 is fixed on the second fixing frame 75.
The control panel module is received on the supporting portion. The supporting portions are a first supporting portion 712 and a second supporting portion 752. The first body portion 710 has a first sidewall 711, and the second body portion 750 has a second sidewall 751. The first body 710 has a first supporting portion 712 extending inward near a first sidewall 711 of the control panel module 3, the second body 750 has a second supporting portion 752 extending inward near a second sidewall 711 of the control panel module 3, the first supporting portion 712 is disposed on the first fixing frame 71, the second supporting portion 752 is disposed on the second fixing frame 75, and the first supporting portion 712 and the second supporting portion 752 contact each other.
The first holder 71 is provided with a first terminal mounting portion 713 near the first supporting portion 712, the second holder 75 is provided with a second terminal mounting portion 753 near the second supporting portion 752, and the first terminal mounting portion 713 and the second terminal mounting portion 753 form a terminal mounting portion for mounting the charge and discharge contact terminal 5. The extending direction of the fixing portion 755 is perpendicular to the connecting direction of the upper cover 2 and the lower cover 1, so that the structural design is more reasonable, the lithium battery pack 7 cannot be loosened easily, the lithium battery pack 7 is more firmly fixed, and the lithium battery pack 7 cannot be loosened and fall off due to shaking or vibration.
The lithium battery pack 7 comprises a battery fixing bracket 71 arranged on the lower cover 2 and a plurality of lithium batteries 72 arranged in the battery fixing bracket 71. The number of the plurality of lithium batteries 72 is 14, and the total capacity of the plurality of lithium batteries 72 is 2AH, preferably, the lithium battery 72 is 18650.
As shown in fig. 6 to 10, for a second embodiment of the present invention, a lithium battery for an electric tool includes a lower cover 1 ', an upper cover 2' installed on the lower cover 1 'and cooperating with the lower cover 1', an accommodating space defined by the upper cover 2 'and the lower cover 1', a lithium battery pack 7 'installed in the accommodating space and installed on the lower cover 1', a control board module 3 'installed above the lithium battery pack 7', a charge/discharge contact terminal 5 'installed above the control board module 3' and located on an opposite side thereof, a terminal pressing member 6 'installed above the charge/discharge contact terminal 5', and a heat sink 4 'installed above the charge/discharge contact terminal 5', the control board module 3 ', the charge/discharge contact terminal 5', the terminal pressing member 6 'and the heat sink 4' are all located in the accommodating space, a battery charge/discharge port 21 'is provided on an upper surface of a first side of the upper cover 2', the first side of the upper cover 2 'corresponds to the opposite side of the control board module 3', the battery charge and discharge port 21 'has a slit 25' communicating with the receiving space, and the charge and discharge contact terminal 5 'is exposed in the slit 25'.
The lithium battery pack of the electric tool lithium battery is arranged on the lower cover 1 ', and the control panel module 3 ', the charging and discharging contact terminal 5 ', the terminal pressing piece 6 ' and the radiating fin 4 ' are directly or indirectly arranged on the lithium battery pack 7 ', so that the accommodating space formed between the lower cover 1 ' and the upper cover 2 ' can be fully utilized, the structural design is more compact, the structure is simple and reasonable, the space is saved, the lithium battery pack 7 ' can quickly dissipate heat, and the heat dissipation efficiency is high; the battery charging and discharging port 21 ' is arranged on the first side of the upper cover 2 ' and located on the same side with the charging and discharging contact terminal 5 ', the battery charging and discharging port 21 ' is provided with a gap 25 ' communicated with the accommodating space, and the charging and discharging contact terminal 5 ' is exposed in the gap 25 ', so that the contact between the charging and discharging contact terminal 5 ' and the outside can be reduced, unnecessary danger or damage to the charging and discharging contact terminal 5 ' is avoided, the electric tool lithium battery is provided with a battery fixing support for accommodating and fixing the lithium battery pack 7 ', the plurality of lithium batteries 7 ' are arranged in a matrix mode, fixing parts for fixing the plurality of lithium batteries 72 ' are formed on partition walls between four adjacent accommodating holes, and the battery fixing support is provided with at least one fixing part 755 ', so that the lithium battery pack 7 is fixed more firmly and is not easy to loosen.
As shown in fig. 6 to 10, the upper cover 2 'has a second side opposite to the first side, and the second side is provided with a power display window 22'. The power display window 22 'and the top surface of the upper cover 2' are obliquely arranged, the power display window 22 'is covered with a PET power display sticker 8', the top surface of the upper cover 2 'is provided with a sticking portion 23' close to the second side, and the sticking portion 23 'is covered with a PET top sticker 24'. The top surface of the upper cover 2 'is approximately plane, the pasting part 23' is a groove sinking downwards from the top surface, the PET top sticker 24 'is pasted in the groove, and the pasting part 23' can be used for pasting nameplates, logos and the like.
The lower cap 1 'has a side surface 11' connecting the first side and the second side, and the middle of the side surface 11 'has an inwardly depressed groove 12'. The inner wall surface of the groove 12 ' at the top is provided with a protrusion 13 ' extending downwards, and the outer surface of the protrusion 13 ' is inclined outwards from top to bottom. The projection of the groove 12' on the side surface is in a trapezoid shape, and the length of the lower bottom edge of the trapezoid is larger than that of the upper top edge.
The joint of the upper cover 2 'and the lower cover 1' is fixedly connected through screws. The lower cover 1 'is arranged in a shell shape, a first accommodating cavity 10' is arranged in the middle of the lower cover, the upper cover 2 'is arranged in a shell shape, a second accommodating cavity 20' is arranged in the middle of the upper cover, and an accommodating space is formed by the first accommodating cavity 10 'and the second accommodating cavity 20'. The lithium battery pack 7 ' is installed in the first accommodating cavity 10 ', and the control panel module 3 ', the charging and discharging contact terminal 5 ', the terminal pressing piece 6 ' and the radiating fin 4 ' are all located in the second accommodating cavity 20 '. The charge and discharge contact terminal 5 ' is exposed in the gap 25 ' and the charge and discharge contact terminal 5 ' and the gap 25 ' are positioned at the same height in the horizontal direction, so that the plug-in unit can be conveniently contacted and matched with the charge and discharge contact terminal 5 '.
As shown in fig. 10, the lithium battery pack 7 ' includes a battery fixing bracket having a plurality of receiving holes, a plurality of lithium batteries 72 ' received in the receiving holes, a battery connecting plate electrically connected to the plurality of lithium batteries 72 ' and a PCB electrically connected to the battery connecting plate, wherein the plurality of lithium batteries 72 ' are arranged in a matrix, a fixing portion 755 ' for fixing the plurality of lithium batteries 7 ' is formed between adjacent four receiving holes, and the battery fixing bracket has at least one fixing portion 755 '.
The battery fixing bracket comprises a first fixing frame 71 'and a second fixing frame 75' opposite to the first fixing frame 71 ', the lithium battery pack 7' is located between the first fixing frame 71 'and the second fixing frame 75', a fixing portion 755 'extends from at least one of the first fixing frame 71' or the second fixing frame 75 'to the other, and the fixing portion 755' is connected with the first fixing frame 71 'or the second fixing frame 75' through a fastener.
The battery connecting piece comprises a first connecting piece 73 'and a second connecting piece 76', the PCB comprises a first PCB 74 'and a second PCB 77', the first connecting piece 73 'is located between the first PCB 74' and the first fixing frame 71 ', and the second connecting piece 76' is located between the second PCB 77 'and the second fixing frame 75'.
The first fixing frame 71 'includes a rectangular first main body portion 710' and a first receiving hole 714 'provided on the first main body portion 710', the second fixing frame 75 'includes a second main body portion 750' and a second receiving hole 754 'provided on the second main body portion 750', the first connecting piece 73 'is clamped in the first receiving hole 714', the first PCB 74 'is fixed on the first fixing frame 71', the second connecting piece 76 'is clamped in the second receiving hole 754', and the second PCB 77 'is fixed on the second fixing frame 75'.
The control panel module is received on the supporting portion. The supporting portions are a first supporting portion 712 'and a second supporting portion 752'. The first body portion 710 'has a first sidewall 711', and the second body portion 750 'has a second sidewall 751'. The first body 710 'has a first supporting portion 712' extending inward near a first sidewall 711 'of the console module 3', the second body 750 'has a second supporting portion 752' extending inward near a second sidewall 711 'of the console module 3', the first supporting portion 712 'is disposed on the first fixing frame 71', the second supporting portion 752 'is disposed on the second fixing frame 75', and the first supporting portion 712 'and the second supporting portion 752' contact each other.
The first fixing frame 71 ' is provided with a first terminal mounting portion 713 ' near the first supporting portion 712 ', the second fixing frame 75 ' is provided with a second terminal mounting portion 753 ' near the second supporting portion 752 ', and the first terminal mounting portion 713 ' and the second terminal mounting portion 753 ' form a terminal mounting portion for mounting the charge and discharge contact terminal 5 '. The extending direction of the fixing portion 755 ' is perpendicular to the connecting direction of the upper cover 2 ' and the lower cover 1 ', so that the structural design is more reasonable, the looseness cannot occur easily, the lithium battery pack 7 ' is more firmly fixed, and the looseness and the falling off of the lithium battery pack 7 ' caused by shaking or vibration cannot occur.
The lithium battery pack 7 ' comprises a battery fixing bracket 71 ' mounted on the lower cover 2 ' and a plurality of lithium batteries 72 ' mounted in the battery fixing bracket 71 '. The number of the plurality of lithium batteries 72 ' is 28, and the total capacity of the plurality of lithium batteries 72 ' is 4AH, preferably, the lithium battery ' model is 18650 lithium battery.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An electric tool lithium battery, its characterized in that: comprises a lower cover, an upper cover which is arranged on the lower cover and matched with the lower cover, an accommodating space which is formed by enclosing the upper cover and the lower cover, a lithium battery pack which is arranged in the accommodating space and arranged on the lower cover, a control panel module which is arranged above the lithium battery pack, a charging and discharging contact terminal which is arranged above the control panel module and is positioned at one side opposite to the charging and discharging contact terminal, a terminal pressing piece which is arranged above the charging and discharging contact terminal and a radiating fin which is arranged above the charging and discharging contact terminal, wherein the control panel module, the charging and discharging contact terminal, the terminal pressing piece and the radiating fin are all positioned in the accommodating space, the lithium battery pack comprises a battery fixing bracket with a plurality of accommodating holes, a plurality of lithium batteries which are accommodated in the accommodating holes, a battery connecting piece which is connected with a plurality of connecting pieces and is electrically conducted, and a PCB (printed circuit board, the lithium battery fixing support is characterized in that the lithium batteries are arranged in a matrix mode, the partition walls between the four adjacent accommodating holes are provided with fixing parts for fixing the lithium batteries, and the battery fixing support is provided with at least one fixing part.
2. A lithium battery for power tools as claimed in claim 1, characterized in that: the battery fixing support comprises a first fixing frame and a second fixing frame opposite to the first fixing frame, the lithium battery pack is located between the first fixing frame and the second fixing frame, the fixing portion extends from at least one of the first fixing frame and the second fixing frame to the other fixing frame, and the fixing portion is connected with the first fixing frame or the second fixing frame through a fastening piece.
3. A lithium battery for power tools as claimed in claim 2, characterized in that: the battery connecting piece comprises a first connecting piece and a second connecting piece, the PCB comprises a first PCB and a second PCB, the first connecting piece is located between the first PCB and the first fixing frame, and the second connecting piece is located between the second PCB and the second fixing frame.
4. A lithium battery for power tools as claimed in claim 3, characterized in that: the first connecting sheet is clamped in the accommodating hole, the first PCB is fixed on the first fixing frame, the second connecting sheet is clamped in the accommodating hole, and the second PCB is fixed on the second fixing frame.
5. A lithium battery for power tools as claimed in claim 2, characterized in that: the first fixing frame comprises a rectangular main body part, the accommodating holes are formed in the main body part and close to the supporting part, the side wall of the control panel module extends inwards to form the supporting part, and the control panel module is connected to the supporting part in an accepting mode.
6. A lithium battery for power tools as claimed in claim 5, wherein: the supporting part comprises a first supporting part and a second supporting part, the first supporting part is arranged on the first fixing frame, the second supporting part is arranged on the second fixing frame, and the first supporting part and the second supporting part are in contact with each other.
7. A lithium battery for power tools as claimed in claim 6, wherein: the first fixing frame is close to first supporting part department is equipped with first terminal installation department, the second fixing frame is close to second supporting part department is equipped with second terminal installation department, first terminal installation department with the second terminal installation department forms and is used for installing the terminal installation department of charge-discharge contact terminal.
8. A lithium battery for power tools as claimed in claim 1, characterized in that: the upper surface of the first side of the upper cover is provided with a battery charging and discharging port, the first side of the upper cover corresponds to the opposite side of the control panel module, the battery charging and discharging port is provided with a gap communicated with the accommodating space, and the charging and discharging contact terminal is exposed in the gap.
9. A lithium battery for power tools as claimed in claim 1, characterized in that: the number of a plurality of lithium batteries is 14 and the total capacity of a plurality of lithium batteries is 2AH or the number of a plurality of lithium batteries is 28 and the total capacity of a plurality of lithium batteries is 4 AH.
10. A lithium battery for power tools as claimed in claim 2, characterized in that: the extending direction of the fixing part is vertical to the connecting direction of the upper cover and the lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921718787.XU CN210429929U (en) | 2019-10-15 | 2019-10-15 | Lithium battery of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921718787.XU CN210429929U (en) | 2019-10-15 | 2019-10-15 | Lithium battery of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210429929U true CN210429929U (en) | 2020-04-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921718787.XU Active CN210429929U (en) | 2019-10-15 | 2019-10-15 | Lithium battery of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210429929U (en) |
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2019
- 2019-10-15 CN CN201921718787.XU patent/CN210429929U/en active Active
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