Battery module and handheld fan

Abstract

The utility model provides a battery module, comprising: a holder comprising an upper side frame and a lower side frame, the upper side frame and the lower side frame being correspondingly fixed to form an accommodating bin; the battery pack comprises at least two battery cells and is fixed in the accommodating bin, and the multiple battery cells in the battery pack are electrically connected; the controller comprises a control panel and a control chip arranged on the control panel, and the controller is arranged on the periphery of the retainer; the positive electrode and the negative electrode of the control panel are electrically connected with the positive electrode and the negative electrode of the battery pack respectively. At least two battery cells are arranged in the battery module, so that the battery capacity is greatly increased, the endurance time is longer, and the battery module can continuously, stably and enduringly supply power; and after the battery module is assembled, the battery module is assembled to other equipment, so that the assembling time can be greatly shortened, and the assembling procedure can be greatly shortened.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a handheld fan. Background Art

[0002] In existing handheld fans, in order to facilitate portability, a single battery is usually used as power supply for the motor.

[0003] However, as people's demand for handheld fans increases, the requirements are also increasing. Handheld fans are developing in the direction of high-speed rotation, and more and more handheld fans are using high-speed motors. How to set up a sufficient power source in a handheld fan with limited volume to continuously and stably supply power to the high-speed motor is an urgent problem that needs to be solved. Summary of the invention

[0004] In view of this, the present application provides a battery module and a handheld fan. By arranging at least two of the battery cells in the battery module, the battery capacity is greatly increased, the battery life is longer, and the battery module can provide power continuously, stably and durably; and after the battery module is assembled, it can be assembled to other devices, which can greatly shorten the assembly time and assembly procedures.

[0005] The present application provides a battery module, comprising: a retaining frame, comprising an upper side frame and a lower side frame, wherein the upper side frame and the lower side frame are fixed correspondingly to form a receiving compartment; a battery pack, comprising at least two battery cells, fixed in the receiving compartment, wherein the multiple battery cells in the battery pack are electrically connected; a controller, comprising a control board and a control chip arranged on the control board, wherein the controller is arranged on the periphery of the retaining frame; wherein the positive and negative poles of the control board are electrically connected to the positive and negative poles of the battery pack, respectively.

[0006] Furthermore, the battery pack includes three battery cells, which are arranged side by side or in an isosceles triangle, and the model of the battery cells is 18650 or 21700.

[0007] Furthermore, the three battery cells are connected in series, and the operating voltage after the series connection is 11.1-12.6V. The three battery cells are connected in series to directly supply power to the motor.

[0008] Furthermore, the three battery cells are connected in parallel, and the parallel working voltage is 3.7-4.2V. After the three battery cells are connected in parallel, the working voltage is increased to 11.1-12.6V through a boost circuit, and then power is supplied to the motor.

[0009] Further, the upper side frame includes a top wall and a plurality of first tabs extending downward from the top wall, and the plurality of first tabs form a plurality of first bins; the lower side frame includes a bottom wall and a plurality of second tabs extending upward from the bottom wall, and the plurality of second tabs form a plurality of second bins; the plurality of first bins and the plurality of second bins together form a plurality of accommodation bins, a part of the plurality of battery cells is received in the plurality of first bins, and another part of the plurality of battery cells is received in the plurality of second bins; a plurality of first fixing parts are provided on the periphery of the plurality of first tabs, a plurality of second fixing parts are provided on the periphery of the plurality of second tabs, the upper side frame and the lower side frame are correspondingly combined, and the plurality of first fixing parts and the plurality of second fixing parts are correspondingly fixed to each other.

[0010] Further, the positive electrode orientation of each battery cell is the same as the negative electrode orientation of the adjacent battery cell, and the positive and negative electrodes of two adjacent battery cells are connected in series through a conductive member; or, the positive electrode orientations of the plurality of battery cells are the same, and the positive electrodes of two adjacent battery cells are connected in parallel through a conductive member, and the negative electrodes of two adjacent battery cells are connected in parallel through a conductive member; a plurality of first slots are formed in the top wall, a plurality of second slots are formed in the bottom wall, and the plurality of conductive members are disposed in the plurality of first slots and the plurality of second slots.

[0011] Further, the controller is disposed above the top wall, the positive electrode of the battery pack is electrically connected to the positive electrode of the control board through a positive electrode connecting piece, and the negative electrode of the battery pack is electrically connected to the negative electrode of the control board through a negative electrode connecting piece; a plurality of third slots are formed in the first tab, a plurality of fourth slots are formed in the second tab, the plurality of third slots and the plurality of fourth slots are in one-to-one correspondence and communication, and the positive electrode connecting piece or the negative electrode connecting piece is electrically connected to the negative electrode or the positive electrode of the control board after passing through one of the second slots, one of the fourth slots and one of the third slots.

[0012] The present application further provides a hand-held fan, including a hand-held part and an air outlet part connected to each other, wherein a motor and a blower are provided in the air outlet part, and the hand-held part is provided with the battery module as described above.

[0013] Further, the length of the hand-held part is 52-62 mm, the width of the hand-held part is 25.5-35.5 mm, the height of the hand-held part is 96.6-106.6 mm, and a part of each battery cell is tangent to the hand-held part.

[0014] Further, the hand-held part includes a side cover and a bottom cover, the bottom cover is detachably connected to the side cover, and the bottom cover is provided with a first ventilation opening.

[0015] Compared with the prior art, the battery module and the hand-held fan of the present application have the following beneficial effects: By arranging at least two of the battery cells in the battery module, the battery capacity is greatly increased, and the battery life is longer. The battery module can supply power continuously, stably and durably; and after the battery module is assembled and then assembled to other devices, the assembly time and the assembly process can be greatly shortened. Description of the Drawings

[0016] Figure 1 is a perspective view of a hand-held fan according to an embodiment of the present application;

[0017] Figure 2 is an exploded view of a hand-held fan according to an embodiment of the present application;

[0018] Figure 3 is a cross-sectional view of a hand-held fan according to an embodiment of the present application;

[0019] Figure 4 is a cross-sectional view of a drive assembly according to an embodiment of the present application;

[0020] Figure 5 is another cross-sectional view of a drive assembly according to an embodiment of the present application;

[0021] Figure 6 is an exploded view of a drive assembly according to an embodiment of the present application;

[0022] Figure 7 is an exploded schematic view of a housing and a support frame according to an embodiment of the present application;

[0023] Figure 8 is an assembly schematic view of a housing, a support frame, a first connecting member and a hand-held part according to an embodiment of the present application;

[0024] Figure 9 is Figure 8 a cross-sectional view of;

[0025] Figure 10 is a cross-sectional view of a housing, a support frame, a first connecting member and a hand-held part according to another embodiment of the present application;

[0026] Figure 11 is a perspective view of a battery module according to an embodiment of the present application;

[0027] Figure 12 is an exploded view of a battery module according to an embodiment of the present application;

[0028] Figure 13 is a cross-sectional view of a battery module according to an embodiment of the present application. Detailed Description of the Embodiments

[0029] To better understand the purpose, structure, features, and effects of the present application, the present application will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present at the same time.

[0031] In the present application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0032] In the description of the present application, the orientation or positional relationships indicated by terms such as "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application.

[0033] As Figure 1 shown, the present application is a handheld fan, and the handheld fan includes an air outlet component 100 and a handheld part 200, and the air outlet component 100 is connected to the handheld part 200.

[0034] As Figures 1 to 3 shown, in one embodiment, the handheld part 200 includes a hand shell 10, and a battery module 20 and a control component 60 are provided inside the hand shell 10. The air outlet component 100 includes a housing 1 and a driving component. The driving component is provided inside the housing 1. The driving component includes a motor 8 and a blower 9. The control component 60 controls the battery module 20 to supply power to the motor 8, and the motor 8 drives the blower 9 to rotate to generate wind.

[0035] As Figure 3 , Figure 4 and Figure 6As shown, in one embodiment, the drive assembly includes a cylinder body 7, a fan 9, and a motor 8. The cylinder body 7 includes an outer ring portion 71, an inner ring portion 72, and a plurality of connecting vanes 73 connecting the outer ring portion 71 and the inner ring portion 72. The fan 9 is received within the outer ring portion 71 and is disposed behind the inner ring portion 72. The motor 8 includes a stator assembly 81 and a rotor assembly 82. The outer diameter of the motor 8 is smaller than the inner diameter of the inner ring portion 72, and the motor 8 is mounted inside the inner ring portion 72. Among them, the rear end of the fan 9 extends backward beyond the rear end of the outer ring portion 71, which is beneficial for the fan 9 to suck and cut the air flow at the rear side of the cylinder body 7, thereby forming a stronger wind. In this embodiment, a buffer sleeve (not labeled, the same below) is also wrapped outside the cylinder body 7. Of course, in other embodiments, the buffer sleeve may not be provided.

[0036] As Figure 3 , Figure 4 and Figure 6 shown, in one embodiment, the fan 9 includes a hub 91 and a plurality of blades 92 spaced around the outside of the hub 91. The outer diameter of the motor 8 is smaller than the maximum inner diameter of the hub 91, so a part of the motor 8 can also be received inside the hub 91. In this embodiment, the hub 91 increases radially from back to front, the inner ring portion 72 is radially constant from back to front, the maximum diameter of the hub 91 is equal to the diameter of the inner ring portion 72, and the wind generated by the rotation of the fan 9 can smoothly flow to the outside of the inner ring portion 72, reducing wind resistance and wind loss. Of course, in other embodiments, the difference between the maximum diameter of the hub 91 and the diameter of the inner ring portion 72 is less than 2 mm, and the effect of reducing wind resistance and wind loss can also be achieved.

[0037] As Figures 3 to 6As shown, in one embodiment, a plurality of first serrations 921 are provided at the leading edge of each blade 92, and a plurality of second serrations 731 are provided at the trailing edge of each connecting blade 73. The ratio range of the tooth width of the first serration 921 to the length of the leading edge of the blade 92 is 0.05 - 0.2. The ratio range of the spacing between two adjacent first serrations 921 to the tooth width of the first serration 921 is 0 - 1. The ratio range of the tooth depth of the first serration 921 to the tooth width of the first serration 921 is 0.5 - 2. The ratio range of the tooth width of the second serration 731 to the length of the trailing edge of the connecting blade 73 is 0.05 - 0.2. The ratio range of the spacing between two adjacent second serrations 731 to the tooth width of the second serration 731 is 0 - 1. The ratio range of the tooth depth of the second serration 731 to the tooth width of the second serration 731 is 0.5 - 2. In this embodiment, there is a spacing between two adjacent first serrations 921, and there is a spacing between two adjacent second serrations 731. In other embodiments, there may be no spacing between two adjacent first serrations 921, and there may be no spacing between two adjacent second serrations 731. In this embodiment, the shapes of the first serration 921 and the second serration 731 are generally triangular. In other embodiments, the shapes of the first serration 921 and the second serration 731 may also be trapezoidal, circular, arc-shaped, etc. In this embodiment, serration structures are provided at the leading edge of the blade 92 and the trailing edge of the connecting blade 73. In other embodiments, serration structures may also be provided at the trailing edge of the blade 92 and the leading edge of the connecting blade 73. In this embodiment, the first serrations 921 are provided throughout the entire leading edge of the blade 92, and the second serrations 731 are provided throughout the entire trailing edge of the connecting blade 73. In other embodiments, the first serrations 921 may also be provided only on a part of the leading edge of the blade 92, and the second serrations 731 may also be provided only on a part of the trailing edge of the connecting blade 73.

[0038] The plurality of first serrations 921 and the plurality of second serrations 731 can effectively eliminate pressure concentration in the airflow, thereby making the overall internal pressure of the airflow more uniform, reducing turbulence, improving the wind efficiency, and at the same time, reducing the noise of the airflow.

[0039] As Figures 3 to 5 shown, in one embodiment, the blade 92 rotates clockwise from back to front, and the connecting blade 73 rotates counterclockwise from back to front first and then extends straight forward. The adjacent regions of the blade 92 and the connecting blade 73 extend in opposite directions. The part of the connecting blade 73 that rotates counterclockwise from back to front can straighten and rectify the airflow generated by the rotation of the blade 92, reducing turbulence and noise.

[0040] As Figures 3 to 6As shown, in one embodiment, the inner ring portion 72 is provided with a mounting portion 721. The motor 8 further includes a bearing housing 83, and the bearing housing 83 is mounted on the mounting portion 721. In this embodiment, the bearing housing 83 is made of metal, and the mounting portion 721 is made of plastic. The bearing housing 83 is mounted on the mounting portion 721 by one or more of in-mold injection molding, ultrasonic welding, hot melting, glue, and press-fitting methods. In other embodiments, the bearing housing 83 can also be made of plastic, the bearing housing 83 is mounted on the mounting portion 721, or the bearing housing 83 and the mounting portion 721 are integrally formed by injection molding.

[0041] As Figures 3 to 6 shown, in one embodiment, the rotor assembly 82 includes a rotating shaft 821, a bearing assembly 822, a magnetic ring 823, and a yoke 824. The bearing assembly 822 is disposed within the bearing housing 83, and one end of the rotating shaft 821 is fixed within the bearing housing 83 through the bearing assembly 822. The magnetic ring 823 is fixed to the radial inner side of the yoke 824, the yoke 824 is fixedly connected to the rotating shaft 821, and the yoke 824 and the magnetic ring 823 are disposed on the radial outer side of the bearing housing 83. The stator assembly 81 is disposed between the bearing housing 83 and the magnetic ring 823, and the other end of the rotating shaft 821 is fixedly connected to the blower 9. That is to say, the magnetic ring 823 is disposed on the radial outer side of the stator assembly 81, and the motor 8 is an outer rotor motor 8. Moreover, the magnetic ring 823 is fixed to the radial inner side of the yoke 824, and the yoke 824 is fixedly connected to the rotating shaft 821. When the stator assembly 81 drives the magnetic ring 823 to rotate, at the same time, the magnetic ring 823 drives the yoke 824, and the yoke 824 drives the rotating shaft 821 to rotate. Therefore, the magnetic ring 823 or the yoke 824 does not need to be connected to the blower 9. By fixedly connecting the other end of the rotating shaft 821 to the blower 9, the rotating shaft 821 drives the blower 9 to rotate.

[0042] As Figure 4 and Figure 6 shown, in one embodiment, the yoke 824 includes an outer side wall 8241, an inner side wall 8242, and a connecting wall 8243. The connecting wall 8243 connects the outer side wall 8241 and the inner side wall 8242. The inner side wall 8242 is disposed inside the outer side wall 8241, and the inner side wall 8242 is tightly connected to the rotating shaft 821. The inner side wall 8242 is shorter than the outer side wall 8241 so that the bearing assembly 822 can be disposed on the portion of the rotating shaft 821 in front of the inner side wall 8242. In this embodiment, the connecting wall 8243 is penetrated with a plurality of through holes 8244, which can dissipate heat inside the motor 8. In other embodiments, the connecting wall 8243 may not be provided with the through holes 8244.

[0043] As Figure 3 and Figure 4 described, in one embodiment, the bearing assembly 822 includes a first bearing 8221 at the front, a second bearing 8222 at the rear, and a buffer member 8223 disposed between the first bearing 8221 and the second bearing 8222. The front end of the inner side wall 8242 directly abuts against the second bearing 8222, or an elastic member (not labeled, the same hereinafter) is provided between the front end of the inner side wall 8242 and the second bearing 8222. The buffer member 8223 can be a single spring, or composed of a spring and a rubber sleeve, or other elastic materials. The elastic member can be a spring, or other elastic materials.

[0044] As Figure 3 、 Figure 4 and Figure 6 shown, in one embodiment, the motor 8 is a three-phase high-speed motor, and the motor 8 further includes a drive plate 84. A fixing hole 722 is provided inside the inner ring portion 72, and the drive plate 84 is provided with a fixing port 841. A fixing member 44 passes through the fixing port 841 and is fixed to the fixing hole 722, thereby fixing the drive plate 84 to the inner ring portion 72.

[0045] As Figures 1 to 3 shown, in one embodiment, the housing 1 includes a first section 11 and a second section 12 connected to each other, and the second section 12 is located behind the first section 11. The drive assembly is disposed inside the first section 11, that is, the cylinder 7, the motor 8 and the blower 9 are disposed inside the first section 11. Among them, a plurality of air inlets 121 are annularly provided on the side surface of the second section 12, and the first section 11 discharges air. It should be understood that in this embodiment, the plurality of air inlets 121 are only provided on the side surface of the second section 12, but in other embodiments, the plurality of air inlets 121 can also be provided on the side surface and the rear surface of the second section 12 at the same time. In this embodiment, a filtering device 34 is further provided on the radially inner side of the plurality of air inlets 121, so that the blown air is cleaner. Of course, in other embodiments, the filtering device 34 may not be provided on the radially inner side of the plurality of air inlets 121.

[0046] As Figures 1 to 3As shown, in one embodiment, the length of the first section 11 is greater than the length of the second section 12. In other embodiments, the length of the first section 11 may also be equal to the length of the second section 12. Each of the plurality of air inlets 121 is a round hole, and the aperture size of each air inlet 121 is 0.8 - 2 mm. In other embodiments, each of the plurality of air inlets 121 may also be a regular polygon hole, or some of the plurality of air inlets 121 are round holes and some of the plurality of air inlets 121 are regular polygon holes.

[0047] As Figure 2 , Figure 3 and Figure 7 As shown, in one embodiment, the air outlet component 100 further includes a support frame 2, and the support frame 2 is received in the housing 1. The support frame 2 includes a first support portion 21 and a second support portion 22 connected front and back. The first support portion 21 is correspondingly received in the first section 11, the second support portion 22 is correspondingly received in the second section 12, and the drive assembly is received in the first support portion 21.

[0048] As Figure 2 , Figure 3 and Figure 7 As shown, in one embodiment, a plurality of first engaging portions 211 and a plurality of first guiding portions 212 are provided on the outer side of the first support portion 21, and a plurality of second engaging portions 111 and a plurality of second guiding portions 112 are correspondingly provided on the inner side of the housing 1. The plurality of first guiding portions 212 and the plurality of second guiding portions 112 cooperate to guide the support frame 2 to slide into the housing 1. The plurality of first engaging portions 211 and the plurality of second engaging portions 111 are correspondingly engaged to fix the support frame 2 in the housing 1. In this embodiment, the plurality of first guiding portions 212 are sliding grooves, and the plurality of second guiding portions 112 are sliding blocks. In other embodiments, it may also be that the plurality of first guiding portions 212 are sliding blocks and the plurality of second guiding portions 112 are sliding grooves. The plurality of first guiding portions 212 and the plurality of second guiding portions 112 are not only in a guiding relationship but also in a positioning relationship. In this embodiment, the plurality of first engaging portions 211 are hooks, and the plurality of second engaging portions 111 are grooves. In other embodiments, it may also be that the plurality of first engaging portions 211 are grooves and the plurality of second engaging portions 111 are hooks. The plurality of first engaging portions 211 and the plurality of second engaging portions 111 are engaged and fixed to limit the relative position between the support frame 2 and the housing 1 at the same time.

[0049] As Figure 2 , Figure 3 and Figure 7As shown, in one embodiment, the air outlet component 100 further includes a fixing frame 3, a functional component 4, and a fixing ring 5. The diameter of the second support portion 22 is smaller than that of the first support portion 21. The second support portion 22 includes a connecting portion 221 connected to the first support portion 21, a plate portion 222 located at the rear side, and a plurality of first columns 223 connecting the connecting portion 221 and the plate portion 222. The fixing frame 3 is disposed on the radial outer side of the second support portion 22 and inside the housing 1. The fixing frame 3 includes a first ring 31, a second ring 32, and a plurality of second columns 33 connecting the first ring 31 and the second ring 32. The first ring 31 is disposed outside the connecting portion 221, and the plurality of second columns 33 are disposed outside the plurality of first columns 223. The functional component 4 is installed on the rear side of the plate portion 222, and the second ring 32 is disposed outside the functional component 4. The fixing ring 5 includes a first side wall 51 and a second side wall 52 arranged concentrically, and a third side wall 53 connecting the first side wall 51 and the second side wall 52. The fixing ring 5 is installed on the rear side of the housing 1 from back to front. The first side wall 51 is fixedly connected to the housing 1, the second side wall 52 is fixedly connected to the functional component 4, and the first side wall 51, the second side wall 52, and the third side wall 53 surround the second ring 32. On the basis that the support frame 2 is fixed to the housing 1, the fixing frame 3, the functional component 4, and the fixing ring 5 are fixed to the housing 1 and the support frame 2.

[0050] As Figure 2 and Figure 3 shown, in one embodiment, the functional component 4 is a lamp. The functional component 4 includes a light source assembly and a fixing member 44. The fixing member 44 passes through the light source assembly and is fixed to the plate portion 222 to fix the functional component 4 to the plate portion 222. The light source assembly includes a circuit board 41, an LED light-emitting member 42, and a light-transmitting member 43. The LED light-emitting member 42 is disposed on the circuit board 41, and the light-transmitting member 43 covers the outside of the circuit board 41 and the LED light-emitting member 42. The circuit board 41 is connected to the control component 60, and the control component 60 can control the on / off of the LED light-emitting member 42. Of course, in other embodiments, the functional component 4 can also be other components, such as an IP component, a humidifier, a heater, a semiconductor refrigerator, etc., without being limited to examples.

[0051] As Figure 2 , Figure 7 , Figure 8 and Figure 9As shown, in one embodiment, the air outlet component 100 further includes a first connecting member 6. The housing 1 includes a first opening 13 provided in the first section 11 and the second section 12. The support frame 2 includes a second opening 23 provided in the first support portion 21 and the second support portion 22. The second opening 23 at least partially overlaps with the first opening 13. The first connecting member 6 passes through the second opening 23 and the first opening 13 from the inside of the support frame 2 and is exposed outside the housing 1. The handheld portion 200 further includes a second connecting member 70. The second connecting member 70 is connected to the upper side of the hand housing 10. At least a part of the second connecting member 70 is exposed upward and is fixedly connected to the first connecting member 6.

[0052] As Figure 10 and Figure 13 As shown, in one embodiment, the first connecting member 6 and the support frame 2 are integrally formed. The housing 1 includes the first opening 13 provided in the first section 11 and the second section 12. A part of the first connecting member 6 passes through the first opening 13 negligently and is exposed downward. The second connecting member 70 and the hand housing 10 are integrally formed. A first ventilation opening 1021 is provided at the bottom of the hand housing 10, and a second ventilation opening 701 is provided on the second connecting member 70. When the fan 9 rotates, the main air flow path is from multiple air inlets 121 into the air outlet component 100 and finally blows out from the front end of the housing 1; the secondary air flow path is from the first ventilation opening 1021 into the hand housing 10, and enters the air outlet component 100 through the second ventilation opening 701 and the first opening 13, and finally blows out from the front end of the housing 1. By providing the first ventilation opening 1021 at the bottom of the hand housing 10, providing the second ventilation opening 701 on the second connecting member 70, and providing the first opening 13 in the support frame 2 to communicate the hand housing 10 and the air outlet component 100, not only the air inlet area is widened and the air intake is increased, but also the heat generated by the battery module 20 and the control component 60 can be taken away.

[0053] As Figures 11 to 13 As shown, in one embodiment, the battery module 20 includes a holder 30, a battery pack 40, and a controller 50. The holder 30 includes an upper side frame 301 and a lower side frame 302. The upper side frame 301 and the lower side frame 302 are fixedly corresponding to form a receiving chamber 303. The battery pack 40 includes at least two battery cells 401. The battery pack 40 is fixed in the receiving chamber 303, and the multiple battery cells 401 in the battery pack 40 are electrically connected. Among them, the positive and negative electrodes of the control board 501 are electrically connected to the positive and negative electrodes of the battery pack 40 respectively.

[0054] As Figures 11 to 13As shown, in one embodiment, the battery pack 40 includes three of the battery cells 401. The three battery cells 401 are arranged in an isosceles triangle. Of course, in other embodiments, the three battery cells 401 may also be arranged side by side. The model of the battery cell 401 is 18650 or 21700. In this embodiment, the three battery cells 401 are connected in series, and the working voltage after series connection is 11.1 - 12.6V. The three battery cells 401 in series directly supply power to the motor 8. In other embodiments, it may also be that the three battery cells 401 are connected in parallel, and the working voltage of the parallel connection is 3.7 - 4.2V. After the three battery cells 401 are connected in parallel, the working voltage is increased to 11.1 - 12.6V through a boost circuit, and then the power is supplied to the motor 8 after boosting. It should be understood that these voltage values are rated values, that is, standard values, but during actual use, they will fluctuate due to constant voltage or constant current problems.

[0055] As Figures 11 to 13 As shown, in one embodiment, the upper side frame 301 includes a top wall 3011 and a plurality of first tabs 3013 extending downward from the top wall 3011. The plurality of first tabs 3013 form a plurality of first bins 3016. The lower side frame 302 includes a bottom wall 3021 and a plurality of second tabs 3023 extending upward from the bottom wall 3021. The plurality of second tabs 3023 form a plurality of second bins 3026. The plurality of first bins 3016 and the plurality of second bins 3026 together form a plurality of the receiving bins 303. A part of the plurality of battery cells 401 is received in the plurality of first bins 3016, and another part of the plurality of battery cells 401 is received in the plurality of second bins 3026. A plurality of first fixing parts 3015 are provided on the periphery of the plurality of first tabs 3013, and a plurality of second fixing parts 3025 are provided on the periphery of the plurality of second tabs 3023. The upper side frame 301 and the lower side frame 302 are correspondingly combined, and the plurality of first fixing parts 3015 and the plurality of second fixing parts 3025 are correspondingly fixed to fixedly receive the plurality of battery cells 401 in the plurality of receiving bins 303.

[0056] As Figures 11 to 13As shown, in one embodiment, the positive electrode orientations of each of the battery cells 401 are the same as the negative electrode orientations of the adjacent battery cells 401, and the positive and negative electrodes of two adjacent battery cells 401 are connected in series through a conductive member 402. Alternatively, in other embodiments, the positive electrode orientations of multiple battery cells 401 are the same, and two adjacent battery cells 401 are connected in parallel between their positive electrodes through a conductive member 402, and two adjacent battery cells 401 are connected in parallel between their negative electrodes through a conductive member 402. The top wall 3011 is provided with a plurality of first slots 3012, and the bottom wall 3021 is provided with a plurality of second slots 3022. A plurality of conductive members 402 are disposed in the plurality of first slots 3012 and the plurality of second slots 3022.

[0057] As Figures 11 to 13 shown, in one embodiment, the controller 50 is disposed above the top wall 3011. The positive electrode of the battery pack 40 is electrically connected to the positive electrode of the control board 501 through a positive electrode connection piece 403, and the negative electrode of the battery pack 40 is electrically connected to the negative electrode connection piece 404 of the control board 501. The first connection piece 3013 is provided with a plurality of third slots 3014, and the second connection piece 3023 is provided with a plurality of fourth slots 3024. The plurality of third slots 3014 and the plurality of fourth slots 3024 are in one-to-one correspondence and communication. The positive electrode connection piece 403 or the negative electrode connection piece 404 is electrically connected to the negative electrode or the positive electrode of the control board 501 after passing through one of the second slots 3022, one of the fourth slots 3024, and one of the third slots 3014. It should be understood that the plurality of first connection pieces 3013 and the plurality of second connection pieces 3023 are substantially arc-shaped to fixedly limit the plurality of battery cells 401. The remaining third slots 3014 and the remaining fourth slots 3024 can be used for ventilation and heat dissipation inside the battery pack 40.

[0058] As Figure 1 、 Figures 11 to 13 shown, in one embodiment, the length of the handheld portion 200 is 52 - 62 mm, the width of the handheld portion 200 is 25.5 - 35.5 mm, and the height of the handheld portion 200 is 96.6 - 106.6 mm. A part of each battery cell 401 is tangentially arranged with the handheld portion 200. The overall volume of the handheld portion 200 is small, and the handheld portion 200 is convenient for the user to hold.

[0059] As Figures 11 to 13 shown, in one embodiment, the handheld portion 200 includes a side cover 101 and a bottom cover 102, that is, the hand shell 10 includes the side cover 101 and the bottom cover 102. The bottom cover 102 is detachably connected to the side cover 101, and the bottom cover 102 is provided with the first ventilation opening 1021.

[0060] The above detailed description is only for the description of the preferred embodiments of this application, and does not limit the patent scope of this application. Therefore, all equivalent technical changes made by using the content of this creative specification and drawings are included in the patent scope of this creation.

Claims

1. A battery module, characterized in that: include: A retaining frame, comprising an upper side frame and a lower side frame, wherein the upper side frame and the lower side frame are fixed correspondingly to form a containing bin; A battery pack, comprising at least two battery cells, fixed to the accommodation compartment, wherein the plurality of battery cells in the battery pack are electrically connected; A controller, comprising a control board and a control chip arranged on the control board, wherein the controller is arranged outside the retaining frame; Wherein, the positive and negative electrodes of the control board are electrically connected to the positive and negative electrodes of the battery pack respectively.

2. The battery module according to claim 1, characterized in that: The battery pack includes three battery cells, which are arranged side by side or in an isosceles triangle. The model of the battery cells is 18650 or 21700.

3. The battery module according to claim 2, characterized in that: The three battery cells are connected in series, and the working voltage after series connection is 11.1-12.6V. The three battery cells are connected in series to directly supply power to the motor.

4. The battery module according to claim 2, characterized in that: The three battery cells are connected in parallel, and the parallel working voltage is 3.7-4.2V. After the three battery cells are connected in parallel, the working voltage is increased to 11.1-12.6V through a boost circuit, and then power is supplied to the motor.

5. The battery module according to claim 1, wherein: The upper side frame includes a top wall and a plurality of first contacts extending downward from the top wall, and the plurality of first contacts form a plurality of first bins; the lower side frame includes a bottom wall and a plurality of second contacts extending upward from the bottom wall, and the plurality of second contacts form a plurality of second bins; the plurality of first bins and the plurality of second bins together constitute a plurality of accommodating bins, the plurality of first bins accommodate a portion of the plurality of battery cells, and the plurality of second bins accommodate another portion of the plurality of battery cells; a plurality of first fixing portions are provided around the periphery of the plurality of first contacts, and a plurality of second fixing portions are provided around the periphery of the plurality of second contacts, the upper side frame and the lower side frame are correspondingly merged, and the plurality of first fixing portions and the plurality of second fixing portions are correspondingly fixed to each other.

6. The battery module according to claim 5, characterized in that: The positive pole of each battery cell is oriented in the same direction as the negative pole of an adjacent battery cell, and the positive and negative poles of two adjacent battery cells are connected in series via a conductive member; Or, the positive electrodes of the plurality of battery cells face the same direction, the positive electrodes of two adjacent battery cells are connected in parallel via a conductive member, and the negative electrodes of two adjacent battery cells are connected in parallel via a conductive member; The top wall is provided with a plurality of first slots, the bottom wall is provided with a plurality of second slots, and the plurality of conductive members are provided in the plurality of first slots and the plurality of second slots.

7. The battery module according to claim 6, characterized in that: The controller is arranged above the top wall, the positive electrode of the battery pack is electrically connected to the positive electrode of the control board through a positive electrode connecting sheet, and the negative electrode of the battery pack is electrically connected to the negative electrode of the control board through a negative electrode connecting sheet; The first contact piece is provided with a plurality of third slots, the second contact piece is provided with a plurality of fourth slots, the plurality of third slots are connected with the plurality of fourth slots in a one-to-one correspondence, the positive electrode connecting piece or the negative electrode connecting piece is electrically connected to the negative electrode or the positive electrode of the control board through one of the second slots, one of the fourth slots and one of the third slots.

8. A handheld fan, comprising a handheld portion and an air outlet component connected to each other, wherein a motor and a fan are arranged in the air outlet component, characterized in that: include: The handheld part is provided with a battery module as claimed in any one of claims 1 to 7.

9. The handheld fan according to claim 8, characterized in that: The length of the handheld portion is 52-62 mm, the width of the handheld portion is 25.5-35.5 mm, the height of the handheld portion is 96.6-106.6 mm, and a portion of each of the battery cells is arranged tangent to the handheld portion.

10. The handheld fan according to claim 8, characterized in that: The handheld part comprises a side cover and a bottom cover, wherein the bottom cover is detachably connected to the side cover, and the bottom cover is provided with a first vent.

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