CN215269297U - Air cooling system of electric wrench - Google Patents
Air cooling system of electric wrench Download PDFInfo
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- CN215269297U CN215269297U CN202121448973.3U CN202121448973U CN215269297U CN 215269297 U CN215269297 U CN 215269297U CN 202121448973 U CN202121448973 U CN 202121448973U CN 215269297 U CN215269297 U CN 215269297U
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Abstract
The utility model relates to an air cooling system of an electric wrench, which comprises a battery shell, a casing and a fan blade, wherein the battery shell is arranged at the bottom of the casing, and the casing is provided with a plurality of motor air outlet holes which are arranged opposite to the fan blade; the top of the battery shell is provided with a plurality of battery air outlet holes, the bottom of the battery shell is provided with a plurality of battery air inlet holes, and the battery air inlet holes are communicated with the battery air outlet holes; the surface of the shell opposite to the battery shell is provided with a plurality of bottom air inlet holes which are communicated with the motor air outlet holes; when the electric wrench air cooling system is cooled, air sequentially passes through the battery air inlet hole, the lithium battery, the battery air outlet hole, the bottom air inlet hole, the controller, the motor and the motor air outlet hole through the fan blades. The system can fully dissipate heat of the lithium battery, the controller and the motor by arranging the communicated air holes on the battery shell and the casing and realizing forced cooling through the fan blades, so that the lithium battery, the controller and the battery can keep lower temperature, and long-time continuous and stable work can be guaranteed.
Description
Technical Field
The utility model relates to an electric spanner, especially electric spanner air cooling system.
Background
Portable electric spanner mainly adopts the lithium cell to provide power, because can generate heat after the long-time continuous operation of lithium cell, is equipped with temperature protection device for the security that improves the lithium cell, just stop work after the high temperature, consequently restricted electric spanner continuous operation's time, mainly solves this problem through the high temperature resistant performance who improves the battery at present, but the effect is limited. The motor also has the condition that the performance is reduced due to heating, and at present, fan blades are mainly installed on the motor to cool the motor. However, the controller inside the electric wrench has a large heat value under the intensity of large current and large power, which causes the temperature of the controller to be too high, and affects the stability of the work, so that the current of the existing electric wrench, especially the electric fixed-torque wrench for screwing and unscrewing the bolts and nuts of the railway steel rail, is large, the torque is large, the heat value is large, and the electric wrench needs to be stopped for heat dissipation after being used for a period of time, and cannot continuously work for a long time.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a can dispel the heat to motor heat dissipation, can dispel the heat to controller and lithium cell simultaneously, make motor, controller and lithium cell keep lower temperature, electric spanner air cooling system that can long-time continuous operation, concrete technical scheme is:
the electric wrench air cooling system comprises a battery case for mounting a lithium battery, a machine shell for mounting a motor and a fan blade mounted on the motor, wherein the battery case is mounted at the bottom of the machine shell, the electric wrench air cooling system also comprises a first air cooling hole arranged on the battery case and a second air cooling hole arranged on the machine shell, the fan blade sucks air from the first air cooling hole and discharges air from the second air cooling hole through the motor, and the fan blade dissipates heat of the lithium battery in the battery case, a controller in the machine shell and the motor.
Preferably, the first air-cooling hole includes: the battery air inlet holes are formed in the bottom or the side face of the battery shell; the battery air outlet holes are formed in the top of the battery shell, and the battery air inlet holes are communicated with the battery air outlet holes; the second air-cooling hole includes: the bottom air inlet holes are formed in the bottom of the shell and are opposite to the battery air outlet holes; and the motor air outlet holes are arranged on two sides of the shell and are opposite to the fan blades, and the bottom air inlet hole is communicated with the motor air outlet holes.
Through adopting above-mentioned technical scheme, the fan blade on the motor carries out convulsions, and the air gets into from the battery fresh air inlet, dispels the heat to the lithium cell earlier, then dispels the heat to the controller through the controller, enters into the motor on casing upper portion at last and dispels the heat to the motor, realizes the reliable heat dissipation of the device that generates heat, has solved the too high problem of lithium cell and controller temperature, makes lithium cell, controller and motor keep lower temperature to can carry out continuous long-time work.
Preferably, a middle air inlet hole is formed in the machine shell and is located on two sides or below the controller.
Through adopting above-mentioned technical scheme, middle fresh air inlet supplyes the new air, and the new air mixes with the hot-air that comes out from the lithium cell, reduces the temperature that is used for radiating air to the realization is to the reliable cooling of controller and motor.
Preferably, the bottom air inlet hole is arranged opposite to the controller arranged in the shell.
Through adopting above-mentioned technical scheme, directly dispel the heat to the controller when the bottom fresh air inlet, improved the radiating effect of controller.
Preferably, the battery air inlet holes are symmetrically formed in two sides of the bottom of the battery case.
Through adopting above-mentioned technical scheme, the battery inlet vent that is located both sides is little to the intensity influence of battery case, and the air inlet is smooth and easy, and the intake is big, realizes the quick cycle of air, and the radiating effect is good.
The bottom inside the battery case is provided with a support rib, and the battery air inlet is positioned between the support rib and the side wall of the battery case.
Through adopting above-mentioned technical scheme, the brace rod is used for improving the intensity of battery case, is used for supporting the lithium cell simultaneously, makes to leave the air inlet clearance between lithium cell and the battery fresh air inlet, makes things convenient for the air inlet, avoids plugging up the battery fresh air inlet.
Preferably, the battery air outlet holes correspond to the bottom air inlet holes one to one.
Through adopting above-mentioned technical scheme, reduce the resistance of circulation of air, improve ventilation efficiency and radiating effect.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides an electric spanner air cooling system is through setting up communicating wind hole on battery case and casing to the realization is from lithium cell department air inlet, from fan blade air-out, carries out abundant heat dissipation to inside lithium cell, controller and motor, makes lithium cell, controller and battery keep lower temperature, thereby has guaranteed to carry out long-time continuous, stable work, need not the heat dissipation of shutting down.
Drawings
FIG. 1 is a schematic structural diagram of an air cooling system for an electric wrench;
FIG. 2 is a schematic view of the electric wrench after a portion of the housing;
FIG. 3 is a schematic view of the structure of the middle air inlet and the motor air outlet;
fig. 4 is a schematic structural view of a battery case;
fig. 5 is an exploded structural view of a battery case;
fig. 6 is a bottom view of the battery case;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
FIG. 8 is a schematic diagram of a lithium battery;
FIG. 9 is a front view of the right housing of the cabinet;
FIG. 10 is a schematic structural view of a right housing of the cabinet;
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 10, the electric wrench air cooling system includes a battery case 1 for mounting a lithium battery 3, a casing 4 for mounting a motor 51, and a fan blade 2 mounted on the motor 51, wherein the battery case 1 is mounted at the bottom of the casing 4, and the casing 4 is provided with a plurality of motor air outlets 45 arranged opposite to the fan blade 2; the top of the battery case 1 is provided with a plurality of battery air outlet holes 11, the bottom of the battery case 1 is provided with a plurality of battery air inlet holes 21, and the battery air inlet holes 21 are communicated with the battery air outlet holes 11; the surface of the shell 4 opposite to the shell 1 is provided with a plurality of bottom air inlet holes 44, and the bottom air inlet holes 44 are communicated with a motor air outlet hole 45; when the electric wrench air cooling system is cooled, air passes through the battery air inlet hole 21, the lithium battery 3, the battery air outlet hole 11, the bottom air inlet hole 44, the motor 51 and the motor air outlet hole 45 in sequence through the fan blade 2.
The fan blade 2 on the motor 51 carries out air draft, and the air gets into from battery inlet opening 21, dispels the heat to lithium cell 3 earlier, then dispels the heat to controller 53 through controller 53, enters into motor 51 on casing 4 upper portion at last and dispels the heat to motor 51, realizes generating heat the reliable heat dissipation of device, has solved the problem that lithium cell 3 and controller 53 high temperature, makes lithium cell 3, controller 53 and motor 51 keep lower temperature to can carry out continuous long-time work.
If set up the louvre on battery case 1 and can reduce the intensity of the battery case 1 body, and heat dispersion is general, and to big moment of torsion, under the condition of heavy current, calorific capacity of lithium cell 3 is big, it is fast to generate heat, and the louvre can not realize quick heat dissipation, and is very limited to the effect of extension continuous operation, and has sacrificed the intensity of casing, consequently solves this problem through the heat resistance who improves lithium cell 3 more, and the utility model discloses a forced heat dissipation has solved quick heat dissipation and has solved above-mentioned problem, and the radiating effect is good.
As shown in fig. 8, lithium cell 3 is the battery package that cylindrical battery constitutes, it is gapped between each battery, and battery exhaust vent 11 sets up the intermediate position at battery case 1 top, consequently, get into 11 departments of battery exhaust vent through the clearance between the battery after the both sides entering of battery case 1 bottom when the air, the realization is to the heat dissipation of battery, the radiating effect is good, can take away the generating heat of battery rapidly, make the battery keep lower temperature, and the adoption be that fan blade 2 on the motor 51 carries out convulsions, do not increase extra updraft ventilator, moreover, the steam generator is simple in structure. The battery air inlet holes 21 at the two sides of the bottom of the battery case 1 and the battery air outlet holes 11 at the top have small influence on the strength of the case.
The air cooling system of the electric wrench carries out forced heat dissipation through the fan blades 2, the problem that the heat dissipation effect is poor due to the fact that heat dissipation holes are adopted in the existing lithium battery 3 is solved, the problem that the battery shell 1 in the prior art is small in size and cannot be cooled through a fan is solved, and the problem that the controller 53 cannot be cooled in the prior art is also solved.
As shown in fig. 4 to 7, the battery case 1 includes a cover plate 10 and a battery case 20, the lithium battery 3 is mounted in the battery case 20, the cover plate 10 is fixed on the battery case 20, the battery air inlet holes 21 are symmetrically arranged on two sides of the bottom of the battery case 20 and are arranged in an array, and the battery air outlet holes 11 are arranged in an array in the middle of the cover plate 10. The battery air inlet holes 21 on the two sides have small influence on the strength of the battery shell 1, the air inlet is smooth, the air inlet amount is large, the rapid circulation of air is realized, and the heat dissipation effect is good.
As shown in fig. 5, a support rib 22 is disposed at the bottom of the battery box 20, and the battery air inlet 21 is located between the support rib 22 and the side wall of the battery box 20. The support ribs 22 are used for improving the strength of the battery case 1 and supporting the lithium battery 3, so that an air inlet gap is reserved between the lithium battery 3 and the battery air inlet hole 21, air can be conveniently fed, and the battery air inlet hole 21 is prevented from being blocked.
As shown in fig. 1 and 2, the bottom air inlet opening 44 is disposed opposite to the controller 53 installed inside the cabinet 4. When air enters the bottom air inlet hole 44, the controller 53 is directly cooled, and the cooling effect of the controller 53 is improved.
As shown in fig. 1, the battery air outlets 11 correspond to the bottom air inlets 44 one by one.
Reduce the resistance of circulation of air, improve ventilation efficiency and radiating effect.
The casing 4 comprises a left casing and a right casing, and the bottom air inlet 44 is formed by air inlet holes of the left casing and the right casing.
Example two
On the basis of the first embodiment, as shown in fig. 1 and fig. 2, the middle air inlet holes 43 are formed on both sides of the housing 4, and the middle air inlet holes 43 are disposed opposite to the controller 53 installed inside the housing 4. The middle air inlet 43 is supplied with fresh air, and the fresh air is mixed with hot air coming out from the lithium battery 3, so that the temperature of the air for heat dissipation is reduced, and the controller 53 and the motor 51 are reliably cooled.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the claims of the present invention.
Claims (7)
1. The electric wrench air cooling system comprises a battery case for mounting a lithium battery, a machine shell for mounting a motor and a fan blade mounted on the motor, wherein the battery case is mounted at the bottom of the machine shell.
2. The electric wrench air-cooling system according to claim 1, wherein the first air-cooling hole includes:
the battery air inlet holes are formed in the bottom or the side face of the battery shell; and
the battery air outlet holes are formed in the top of the battery shell, and the battery air inlet holes are communicated with the battery air outlet holes;
the second air-cooling hole includes:
the bottom air inlet holes are formed in the bottom of the shell and are opposite to the battery air outlet holes; and
the fan blades are arranged on the two sides of the shell, the motor air outlets are arranged on the two sides of the shell and opposite to the fan blades, and the bottom air inlet hole is communicated with the motor air outlets.
3. The electric wrench air cooling system according to claim 1 or 2, wherein the casing is provided with a middle air inlet hole, and the middle air inlet hole is located on two sides or below the controller.
4. The electric wrench air cooling system according to claim 2, wherein the bottom air inlet is disposed opposite to the controller installed inside the cabinet.
5. The electric wrench air cooling system according to claim 2, wherein the plurality of battery air inlet holes are symmetrically disposed on both sides of the bottom of the battery case.
6. The electric wrench air cooling system according to claim 2, wherein a support rib is disposed at a bottom of an interior of the battery case, and the battery air inlet hole is located between the support rib and a side wall of the battery case.
7. The electric wrench air cooling system according to claim 1 or 2, wherein the battery air outlet holes correspond to the bottom air inlet holes one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121448973.3U CN215269297U (en) | 2021-06-28 | 2021-06-28 | Air cooling system of electric wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121448973.3U CN215269297U (en) | 2021-06-28 | 2021-06-28 | Air cooling system of electric wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215269297U true CN215269297U (en) | 2021-12-21 |
Family
ID=79483933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121448973.3U Active CN215269297U (en) | 2021-06-28 | 2021-06-28 | Air cooling system of electric wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215269297U (en) |
-
2021
- 2021-06-28 CN CN202121448973.3U patent/CN215269297U/en active Active
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