CN216720177U

CN216720177U - Battery pack

Info

Publication number: CN216720177U
Application number: CN202123454378.3U
Authority: CN
Inventors: 陈仕峰
Original assignee: Ningbo Bata Tools Co ltd
Current assignee: Ningbo Bata Tools Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-10
Anticipated expiration: 2031-12-31

Abstract

The application relates to a battery pack, which belongs to the technical field of battery packs and comprises a battery pack shell, a battery pack and a spring seat; the battery pack shell comprises an upper shell and a lower shell, wherein the lower shell is provided with a mounting groove, the battery pack comprises a circuit board, the circuit board is mounted in the mounting groove, and the upper shell is covered on the notch of the mounting groove; the spring seat comprises an insertion block, the circuit board is provided with an insertion hole for the insertion of the insertion block, and the insertion block is provided with a spring groove for the insertion and positioning of a spring. This application has the effect of the yield that improves the spring holder.

Description

Battery pack

Technical Field

The application relates to the field of battery packs, in particular to a battery pack.

Background

The battery pack refers to a combined battery capable of being charged for multiple times, a plurality of lithium batteries are assembled by a lithium battery support usually, and then the assembled lithium batteries and a circuit board are placed in a shell to form a module so as to be used as a power supply.

The handheld electric drill is an electric tool for drilling, and the size of the common handheld electric drill is small, so that the electric capacity of a lithium battery installed in the handheld electric drill is small. In order to increase the capacitance of the hand-held electric drill, a battery pack is detachably mounted on the hand-held electric drill.

On can being provided with an elastic joint spare on the battery package usually and making the battery package joint be fixed in handheld electric drill, elastic joint spare includes button, buckle, spring and spring holder, and the buckle sets up with the button is integrative, and the spring holder is installed on lithium cell support, spring one end butt in the spring holder, other end butt in the buckle, and then makes the joint inslot that the buckle joint was seted up on handheld electric drill realize the joint with handheld electric drill. When the lock is unlocked, the lock can be unlocked by pressing the button.

In the correlation technique, the spring holder is with the integrative injection moulding of lithium cell support, and then comparatively inconvenient when the drawing of patterns for the disability rate of spring holder is higher.

SUMMERY OF THE UTILITY MODEL

In order to improve the yield of spring holder, this application provides a battery package.

The application provides a battery package adopts following technical scheme:

a battery pack comprises a battery pack shell, a battery pack and a spring seat;

the battery pack shell comprises an upper shell and a lower shell, wherein the lower shell is provided with a mounting groove, the battery pack comprises a circuit board, the circuit board is mounted in the mounting groove, and the upper shell is covered on the notch of the mounting groove;

the spring seat comprises an insertion block, the circuit board is provided with an insertion hole for the insertion of the insertion block, and the insertion block is provided with a spring groove for the insertion and positioning of a spring.

By adopting the technical scheme, the spring seat is independently injected, so that the demoulding is convenient, and the yield of the spring seat is improved; the plug block cartridge has increased the area of contact of plug block and circuit board in the spliced eye, and then makes the plug block installation back comparatively stable, sets up on the plug block simultaneously and supplies spring male spring groove, and then with the spring prepositioning, has improved the stability behind the spring mounting, goes up casing lid and locates casing down, and then has reduced the risk that circuit board and spring holder deviate from the mounting groove.

Optionally, the spring holder still includes the journal stirrup, journal stirrup fixed mounting in the periphery wall of plug block, just the journal stirrup butt in the circuit board.

Through adopting above-mentioned technical scheme, the journal stirrup sets up on the outer wall of grafting piece, and journal stirrup butt in the circuit board, and then has increased the area of contact of grafting piece with the circuit board, and when the spring received pressure transfer for the grafting piece, the grafting piece can be comparatively stable play a supporting role to the spring.

Optionally, the support lug is provided with a positioning block, and the circuit board is provided with a positioning hole for inserting the positioning block.

Through adopting above-mentioned technical scheme, the locating piece cartridge is in the locating hole, and then makes the difficult rocking by a wide margin of grafting piece.

Optionally, a reinforcing rib is arranged on the outer wall of the insertion block.

Through adopting above-mentioned technical scheme, the intensity of grafting piece has been improved to the setting of strengthening rib on the grafting piece outer wall, and then has reduced the cracked risk of grafting piece.

Optionally, a first attaching surface is arranged on the insertion block, and the first attaching surface abuts against the lithium battery.

Through adopting above-mentioned technical scheme, through first binding face, increased the area of contact between grafting piece and the lithium cell, during the spring compression, the lithium cell can play a supporting role for the grafting piece, and then has improved the stability of grafting piece.

Optionally, the spring holder still includes the fin, be provided with the second binding face on the fin, second binding face butt in lithium cell.

By adopting the technical scheme, the second binding surface on the tail wing is abutted against the lithium battery, so that the contact area of the plug-in block and the lithium battery is increased, and the stability of the plug-in block is further improved.

Optionally, the battery pack further comprises a lithium battery support, a positioning column is arranged on the lithium battery support, and a positioning groove for inserting the positioning column is formed in the circuit board.

Through adopting above-mentioned technical scheme, a plurality of lithium cells are all installed on the lithium cell support, and then form a module, and the installation of being convenient for, reference column cartridge is in the constant head tank simultaneously, and then comparatively convenient when making the circuit board installation.

Optionally, a limiting plate is arranged on the lower shell, and a limiting hole which is convenient for the limiting plate to be inserted is formed in the circuit board.

Through adopting above-mentioned technical scheme, the limiting plate cartridge has a limiting displacement in spacing downthehole to the limiting plate, and then makes the butt that the spring of installing in the spring inslot can be comparatively accurate in the buckle.

Optionally, the upper shell is provided with a first connecting column and a second connecting column, the lower shell is provided with a first connecting groove for the first connecting column to be inserted or separated and a second connecting groove for the second connecting column to be inserted or separated, and a groove wall of the second connecting groove is provided with a variable hole.

Through adopting above-mentioned technical scheme, first spliced pole cartridge is in first spread groove, and second spliced pole cartridge is in the second spread groove for go up casing and casing location installation down, charge or discharge at the lithium cell simultaneously and all can produce the heat, and then the second spliced pole can take place little inflation after being heated, through the deformation hole, when the second spliced pole is heated the inflation, the cell wall of spread groove takes place elastic deformation through the deformation hole, and then offsets the inflation of second spliced pole.

Optionally, the battery pack further comprises an electric drill shell, a sliding strip is arranged on the electric drill shell, a first sliding groove and a second sliding groove for the sliding strip to penetrate through are sequentially formed in the upper shell along the sliding installation direction, and the first sliding groove is communicated with the second sliding groove;

the distance between the groove wall of one side of the lower shell, close to the first sliding groove, and the groove wall of one side of the lower shell, back to the first sliding groove, is greater than the distance between the groove wall of one side of the lower shell, close to the second sliding groove, and the groove wall of one side of the lower shell, away from the second sliding groove, and a transition inclined plane is arranged between the first sliding groove and the second sliding groove.

Through adopting above-mentioned technical scheme, along with the removal of battery package shell, spacing strip is the first inslot that slides of comparatively easy entering earlier, then the strip that slides through the comparatively convenient second inslot that gets into of transition face, because the clearance of first spout is greater than the clearance in second groove that slides, the strip that slides is difficult for rocking by a wide margin after getting into the second inslot that slides, and then makes the battery package comparatively convenient when the installation.

In summary, the present application includes at least one of the following beneficial technical effects:

the spring seat is independently injected and molded, so that the demolding is convenient, the yield of the spring seat is improved, the inserting block is inserted into the inserting hole, the inserting block is limited, and one end of the spring, far away from the inserting block, can be accurately abutted against the buckle;

the arrangement of the support lug increases the contact area between the plug-in block and the circuit board, so that the stability of the plug-in block after installation is improved;

the arrangement of the first sliding groove, the second sliding groove and the transition inclined plane ensures that the battery pack is convenient to mount.

Drawings

Fig. 1 is a schematic view of the installation of a battery pack and a hand-held electric drill in an embodiment of the present application.

Fig. 2 is an exploded view of a battery pack in the embodiment of the present application.

Fig. 3 is a schematic structural view of a spring seat in the embodiment of the present application.

Fig. 4 is an exploded view of the upper case and the lower case in the embodiment of the present application.

Description of reference numerals: 1. a battery pack housing; 11. an upper housing; 111. a first connecting column; 112. a second connecting column; 113. a first sliding groove; 114. a second sliding groove; 115. a transition bevel; 12. a lower housing; 121. mounting grooves; 122. a limiting plate; 123. a first connecting groove; 124. a second connecting groove; 1241. a deformation hole; 2. a battery pack; 21. a lithium battery; 22. a lithium battery support; 221. a positioning column; 23. a circuit board; 231. positioning a groove; 232. a limiting hole; 233. inserting holes; 234. positioning holes; 3. an electric drill housing; 31. a sliding strip; 4. a spring seat; 41. an insertion block; 411. a spring slot; 412. a first binding surface; 413. reinforcing ribs; 42. supporting a lug; 421. positioning blocks; 43. a tail wing; 431. and a second binding surface.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a battery pack. Referring to fig. 1 and 2, the battery pack includes a battery pack case 1, a battery pack 2, a drill case 3, and a spring seat 4. Group battery 2 includes a plurality of lithium cell 21, lithium cell support 22 and circuit board 23, it is convenient for install to make up a module with a plurality of lithium cell 21 through lithium cell support 22, circuit board 23 demountable installation is on lithium cell support 22, lithium cell 21, lithium cell support 22 and circuit board 23 are all installed in battery pack shell 1, battery pack shell 1 demountable installation is on electric drill shell 3, and then transmit lithium cell 21's electric quantity for handheld electric drill through circuit board 23 and make its rotation. Spring holder 4 separately moulds plastics alone with lithium battery support 22, and then make spring holder 4 comparatively convenient when the drawing of patterns, has improved the yield of spring holder 4, and spring holder 4 demountable installation has improved the inside space utilization of battery package shell 1 on circuit board 23 simultaneously.

Referring to fig. 2, battery pack case 1 includes upper housing 11 and lower housing 12, wherein has seted up mounting groove 121 on the lower housing 12, and group battery 2 and spring holder 4 are all installed in mounting groove 121, and upper housing 11 covers and locates mounting groove 121 notch department, and then has reduced group battery 2 and spring holder 4 and has broken away from the risk of mounting groove 121.

Lithium battery support 22 inlays and installs in mounting groove 121, and lithium battery support 22 is close to one side of last casing 11 is provided with reference column 221, sets up the constant head tank 231 that supplies reference column 221 cartridge on the circuit board 23, and then when installing circuit board 23, can be comparatively convenient with circuit board 23 predetermined position in suitable position to circuit board 23 and handheld electric drill electric connection, circuit board 23 passes through the mounting screw on lithium battery support 22. Further, the lower shell 12 is integrally provided with a limiting plate 122, the circuit board 23 is provided with a limiting hole 232, the limiting plate 122 penetrates through the limiting hole 232 to further position the circuit board 23, and stability of the circuit board 23 during positioning and installation is improved.

Referring to fig. 2 and 3, the spring seat 4 includes an insertion block 41, a support lug 42, and a tail wing 43, and the support lug 42 and the tail wing 43 are integrally fixed to an outer wall of the insertion block 41. Wherein the plug-in block 41 is provided with a spring slot 411 for mounting a spring, and then the spring is limited after being mounted in the spring slot 411, so that the spring is not easy to shake by a large margin, and meanwhile, the spring is convenient to abut against the buckle. The circuit board 23 is provided with an insertion hole 233 for the insertion block 41 to pass through, the insertion block 41 passes through the insertion hole 233 and then abuts against the lithium battery 21, and when the spring is compressed, a pressure is applied to the insertion block 41, so that the lithium battery 21 has a supporting force for the insertion block 41. The inserting block 41 improves the stability after installation through the support lug 42, the tail wing 43 increases the contact area of the inserting block 41 and the lithium battery 21, and the stability of the inserting block 41 is further improved.

Referring to fig. 2 and 3, specifically, the support lug 42 is provided with a positioning block 421, the circuit board 23 is provided with a positioning hole 234, the positioning block 421 is inserted into the positioning hole 234, so that the risk of substantial shaking of the insertion block 41 is reduced, and meanwhile, the support lug 42 abuts against the circuit board 23, so that the contact area between the insertion block 41 and the circuit board 23 is increased, and the insertion block 41 is stable after being installed. In this embodiment, two support lugs 42 are preferably provided, two corresponding positioning blocks 421 and two corresponding positioning holes 234 are also provided, the two support lugs 42 are spaced apart from each other on the outer wall of the insertion block 41, and both the two support lugs 42 abut against the circuit board 23. The two support lugs 42 correspond to the two positioning blocks 421, and the two positioning blocks 421 correspond to the two positioning holes 234, so that when one support lug 42 loses its function, the other support lug 42 can still continue to function. One side of the insertion block 41 close to the lithium battery 21 is provided with a first attaching surface 412, and then one side of the insertion block 41 close to the lithium battery 21 can be completely attached to the outer wall of the lithium battery 21 through the first attaching surface 412.

The tail wing 43 is provided with a second attaching surface 431, so that one side of the tail wing 43 close to the lithium battery 21 can be completely attached to the outer wall of the lithium battery 21, and the stability of the plug block 41 is improved. In this embodiment, two tail wings 43 are preferably provided, and the two tail wings 43 are spaced apart from each other on the outer wall of the insertion block 41, so that when one tail wing 43 is broken, the other tail wing 43 can also function. Meanwhile, the insertion block 41 is also provided with a reinforcing rib 413, so that the strength of the insertion block 41 is improved.

Referring to fig. 2 and 4, a first connecting column 111 and a second connecting column 112 are integrally arranged on one side of the upper casing 11 close to the lower casing 12, the first connecting column 111 and the second connecting column 112 are arranged at intervals, and a first connecting groove 123 and a second connecting groove 124 are formed on one side of the lower casing 12 close to the upper casing 11, wherein the first connecting column 111 is fixed in the first connecting groove 123 through a screw, and the second connecting column 112 is fixed in the second connecting groove 124 through a screw, so that the upper casing 11 is fixedly connected with the lower casing 12.

Further, because lithium cell 21 charges or all can produce the heat of discharging, second spliced pole 112 can take place small inflation after being heated, consequently offers tangible deformation hole 1241 on the cell wall of second spread groove 124, when second spliced pole 112 is heated the inflation, the cell wall of spread groove takes place elastic deformation through deformation hole 1241, and then offsets the inflation volume of second spliced pole 112.

Referring to fig. 1 and 2, the electric drill housing 3 is integrally provided with a sliding strip 31, the side wall of the upper housing 11 is provided with a first sliding groove 113 and a second sliding groove 114 for the sliding strip 31 to penetrate, wherein the first sliding groove 113 and the second sliding groove 114 are sequentially arranged along the direction of the upper housing 11 sliding on the electric drill housing 3, and the first sliding groove 113 is communicated with the second sliding groove 114. Wherein, the side of the upper housing 11 departing from the lower housing 12 is a top, and the first sliding groove 113 and the second sliding groove 114 are flush with each other. And the distance between the first sliding chute departing from the top chute wall and the first sliding chute 113 approaching to the top chute wall is greater than the distance between the second sliding chute departing from the top chute wall and the second sliding chute 114 approaching to the top chute wall, so that the sliding strip 31 and the first sliding chute 113 are more convenient, and then after passing through the first sliding chute 113 and the second sliding chute 114, the second sliding chute 114 cannot be greatly rocked. Further, a transition inclined plane 115 is arranged between the first sliding groove 113 and the second sliding groove 114, and the transition inclined plane 115 is inclined towards the top along the sliding installation direction of the upper shell 11, so that the sliding strip 31 can conveniently enter the second sliding groove 114.

The implementation principle of the battery pack in the embodiment of the application is as follows: separately mould plastics spring holder 4 and lithium battery support 22 alone, and then it is comparatively easy when making the drawing of patterns of spring holder 4, the yield of spring holder 4 has been improved, spring mounting is in spring groove 411, the cartridge is in spliced eye 233 when plug-in block 41 installs, locating piece 421 cartridges are in locating hole 234 simultaneously, first binding face 412 and second binding face 431 all butt in lithium cell 21 this moment, and then when the spring compression, lithium cell 21 can support plug-in block 41.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A battery pack, comprising: comprises a battery pack shell (1), a battery pack (2) and a spring seat (4);

the battery pack shell (1) comprises an upper shell (11) and a lower shell (12), wherein a mounting groove (121) is formed in the lower shell (12), the battery pack (2) comprises a circuit board (23), the circuit board (23) is mounted in the mounting groove (121), and the upper shell (11) is covered on a notch of the mounting groove (121);

the spring seat (4) comprises an insertion block (41), the circuit board (23) is provided with an insertion hole (233) for the insertion of the insertion block (41), and the insertion block (41) is provided with a spring groove (411) for the insertion and positioning of a spring.

2. The battery pack according to claim 1, wherein: spring holder (4) still include journal stirrup (42), journal stirrup (42) fixed mounting in the periphery wall of plug block (41), just journal stirrup (42) butt in circuit board (23).

3. The battery pack according to claim 2, wherein: the support lug (42) is provided with a positioning block (421), and the circuit board (23) is provided with a positioning hole (234) for inserting the positioning block (421).

4. A battery pack according to claim 1, 2 or 3, wherein: and reinforcing ribs (413) are arranged on the outer wall of the insertion block (41).

5. The battery pack according to claim 4, wherein: the insertion block (41) is provided with a first binding surface (412), and the first binding surface (412) is abutted to the lithium battery (21).

6. The battery pack according to claim 1, wherein: the spring seat (4) further comprises a tail wing (43), a second abutting surface (431) is arranged on the tail wing (43), and the second abutting surface (431) abuts against the lithium battery (21).

7. The battery pack according to claim 1, wherein: the battery pack (2) further comprises a lithium battery support (22), a positioning column (221) is arranged on the lithium battery support (22), and a positioning groove (231) for inserting the positioning column (221) is formed in the circuit board (23).

8. The battery pack according to claim 7, wherein: be provided with limiting plate (122) on lower casing (12), be provided with on circuit board (23) and be convenient for limiting plate (122) cartridge spacing hole (232).

9. The battery pack according to claim 1, wherein: the improved structure is characterized in that a first connecting column (111) and a second connecting column (112) are arranged on the upper shell (11), a first connecting groove (123) for the first connecting column (111) to insert or separate and a second connecting groove (124) for the second connecting column (112) to insert or separate are formed in the lower shell (12), and a tangible deformation hole (1241) is formed in the groove wall of the second connecting groove (124).

10. The battery pack according to claim 1, wherein: the electric drill is characterized by further comprising an electric drill shell (3), wherein a sliding strip (31) is arranged on the electric drill shell (3), a first sliding groove (113) and a second sliding groove (114) for the sliding strip (31) to penetrate through are sequentially formed in the upper shell (11) along the sliding installation direction, and the first sliding groove (113) is communicated with the second sliding groove (114);

the first sliding groove (113) is close to the distance between the groove wall of one side of the lower shell (12) and the groove wall of one side of the first sliding groove (113) departing from the lower shell (12), the distance between the groove wall of one side of the second sliding groove (114) close to the lower shell (12) and the groove wall of one side of the second sliding groove (114) departing from the lower shell (12), and a transition inclined plane (115) is arranged between the first sliding groove (113) and the second sliding groove (114).