Charger

Abstract

The utility model discloses a charger, which belongs to the charging technology of a mobile power supply, solves the problem that a battery pack is inconvenient to take and place when the battery pack is charged by the conventional charger, and comprises a shell, a charging circuit arranged in the shell, an external power line connected with the charging circuit and a charging output end, the storage groove is provided with a lateral opening, so that the battery pack can be placed in the storage groove or taken out of the storage groove through the lateral opening; the charging output end is arranged at one end, opposite to the lateral opening, in the containing groove so that the battery pack can be in electrical butt joint with the charging output end when the battery pack is slidably arranged in the containing groove through the lateral opening, and the battery pack is disengaged from the charging output end when the battery pack is taken out of the containing groove through the lateral opening. The battery pack can be placed in the storage groove through the action of pushing the battery pack into the storage groove, the battery pack can be taken out of the storage groove through the action of pushing the battery pack out of the storage groove, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the charging technology of mobile power supply, and particularly relates to a charger. Background Art

[0002] Various electrical appliances, such as power tools, are equipped with rechargeable battery packs that need to be charged when the battery packs are low on power. Existing chargers are inconvenient to remove and place while charging the battery packs. Furthermore, their structure is illogical, posing safety risks. Utility Model Content

[0003] The technical problem to be solved and the technical task proposed by the utility model are to overcome the defect of the existing charger that it is inconvenient to take out and put away the battery pack when charging, to provide a charger that is convenient for taking out and putting away the battery pack when charging, and to improve the safety of the charger.

[0004] To achieve the above-mentioned objectives, the charger of the present invention includes a shell, a charging circuit disposed within the shell, an external power cord connected to the charging circuit, and a charging output terminal, and is characterized in that: a storage slot is provided at the top of the shell, the storage slot has a lateral opening for a battery pack to be placed in the storage slot or removed from the storage slot through the lateral opening, and the charging output terminal is arranged at the end of the storage slot opposite to the lateral opening so that the battery pack can be electrically connected to the charging output terminal when it is slid into the storage slot through the lateral opening, and can be disconnected from the charging output terminal when the battery pack is removed from the storage slot through the lateral opening.

[0005] To charge the battery pack, simply slide it through the side opening into the storage slot, electrically connecting it to the charging output. This is accomplished by simply pushing the battery pack into the storage slot. To remove the battery pack, simply slide it in the opposite direction, removing it from the storage slot through the side opening and disconnecting it from the charging output. This is accomplished by simply pushing the battery pack out of the storage slot, making it easy to operate.

[0006] Preferably, the storage slot is formed by a bottom surface, an end wall, a first side wall, and a second side wall provided on the top of the shell. The end wall, the first side wall, and the second side wall extend upward from the edge of the bottom surface. The first side wall and the second side wall are arranged opposite to each other and one end of them is connected to the end wall, and the other end of them defines the lateral opening. Accordingly, the battery pack can only be placed in the storage slot in a specific posture to avoid incorrect operation. In addition, the battery pack is constrained by the bottom surface, the end wall, the first side wall, and the second side wall in the storage slot and can be stably located in the storage slot. This prevents the battery pack from accidentally falling out of the storage slot and ensures charging safety.

[0007] Preferably, the side wall of the storage slot is provided with a sliding groove, which is used to guide the battery pack when taking out and placing the battery pack, and secondly, it can restrain the battery pack from escaping the storage slot upward when charging, and can stably restrain the battery pack in the storage slot.

[0008] Preferably, the bottom surface of the receiving groove is provided with a positioning groove.

[0009] Preferably, the shell comprises a bottom plate and an upper cover fastened together by fasteners, the upper cover comprises a top wall and a peripheral wall, the edge of the peripheral wall is provided with a groove and a flange separately from the edge of the bottom plate, the flange is located in the groove; the receiving groove is located on the upper side of the top wall.

[0010] Preferably, the charging circuit is integrated on a circuit board, the circuit board is fastened to the upper side of the bottom plate.

[0011] Preferably, the bottom plate is provided with a support, the circuit board is supported by the support and kept a gap with the bottom plate and the upper cover.

[0012] Preferably, the charging output end is fastened to the inner side of the top wall and extends to the receiving groove through a through hole on the top wall.

[0013] Preferably, the shell is provided with a display connected to the charging circuit, and the shell is provided with a transparent window corresponding to the display.

[0014] Preferably, the display is clamped on the inner wall of the shell, and the display is as close as possible to the transparent window for easy reading.

[0015] The utility model discloses a receiving groove is arranged on the top of the shell, the receiving groove has a lateral opening, the battery pack is placed in or taken out from the receiving groove through the lateral opening, and the charging output end is arranged in the receiving groove and opposite to the lateral opening.

[0016] The shell comprises a bottom plate and an upper cover fastened together by fasteners, the upper cover comprises a top wall and a peripheral wall, the edge of the peripheral wall is provided with a groove and a flange separately from the edge of the bottom plate, the flange is located in the groove; the receiving groove is located on the upper side of the top wall. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Figure 2 is an axial side view of the charger of the present application;

[0018] Figure 2 Figure 3 is a perspective view of the charger of the present application; Figure 1 Figure 4 is an axial side view of another perspective of the charger of the present application;

[0019] Figure 3 Figure 5 is an axial side view of a third perspective of the charger of the present application; Figure 1 Figure 6 is a front projection view of the top surface of the charger of the present application;

[0020] Figure 4 Figure 7 is an A-A sectional view of the charger of the present application; Figure 1 Figure 8 is a B-B sectional view of the charger of the present application;

[0021] Figure 5 Figure 9 is a structural exploded view of the charger of the present application; Figure 4

[0022] Figure 6 Figure 10 is a schematic view of another perspective of the structure of the present application; Figure 4

[0023] Figure 7 Figure 11 is a schematic view of another perspective of the structure of the present application; Figure 1

[0024] Figure 8 Figure 12 is a schematic view of another perspective of the structure of the present application; Figure 7 Figure 13 is a legend of the drawing;

[0025] 100 housing: 101 receiving groove, 102 laterally open, 103 bottom surface, 104 end wall, 105 first side wall, 106 second side wall, 107 sliding slot, 108 positioning slot, 109 hook,

[0026] 110 bottom plate, 111 embedding groove, 112 supporting leg,

[0027] 120 upper cover, 121 top wall, 122 peripheral wall, 123 flange, 124 through hole;

[0028] 200 external power cord;

[0029] 300 charging output end;

[0030] 400 circuit board;

[0031] 500 display;

[0032] 600 transparent window;

[0033] 700 nameplate.

[0034] DETAILED DESCRIPTION

[0035] ​​​​In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0036] The terms "comprising" and "having" and any variations thereof in the specification and claims of the utility model are intended to cover non-exclusive inclusion, for example, a method or product comprising a series of technical features, which is not limited to the clearly listed technical features, and other technical features not clearly listed can also be included in the method or product.

[0037] The utility model will be introduced in detail below in combination with specific embodiments and drawings.

[0038] As Figures 1-8 The charger shown in the figure comprises a shell 100, a charging circuit arranged in the shell, an external power line 200 connected with the charging circuit and a charging output end 300. The top of the shell 100 is provided with a receiving groove 101, the receiving groove 101 has a lateral opening 102 for the battery pack to be placed in or taken out of the receiving groove through the lateral opening. The charging output end 300 is arranged in the receiving groove 101 at the end opposite to the lateral opening 102, so that the battery pack can be electrically connected with the charging output end when being placed in the receiving groove through the lateral opening, and the battery pack can be disconnected from the charging output end when being taken out of the receiving groove through the lateral opening. Accordingly, when charging the battery pack, the battery pack can be electrically connected with the charging output end by being placed in the receiving groove through the lateral opening. In actual operation, one action of pushing the battery pack into the receiving groove can be completed. When taking the battery pack, the battery pack can be taken out of the receiving groove and disconnected from the charging output end by being reversely slid through the lateral opening. In actual operation, one action of pushing the battery pack out of the receiving groove can be completed. The operation is convenient.

[0039] In the illustrated structure, the receiving groove 101 is surrounded by a bottom surface 103 arranged at the top of the shell, an end wall 104, a first side wall 105 and a second side wall 106. The end wall, the first side wall and the second side wall extend upward from the edge of the bottom surface. The first side wall and the second side wall are oppositely arranged and one end of them is connected with the end wall and the other end thereof defines the lateral opening 102. Accordingly, the battery pack can only be placed in the receiving groove in a specific posture, avoiding incorrect operation. Moreover, the battery pack can be stably positioned in the receiving groove due to the constraint of the bottom surface, the end wall, the first side wall and the second side wall. The battery pack can be prevented from being accidentally taken out of the receiving groove, ensuring the charging safety.

[0040] In the illustrated structure, the upper end edges of the first side wall 105 and the second side wall 106 of the receiving groove 101 are provided with hooks 109 and a sliding groove 107 is formed below the hooks. The sliding groove is used to guide the battery when the battery pack is taken out or put in. During charging, the battery pack is constrained by the sliding groove, which can prevent the battery pack from being pulled out of the receiving groove upward, and stably constrain the battery pack in the receiving groove.

[0041] In the illustrated structure, the bottom surface of the receiving groove 101 is provided with a positioning groove 108. The positioning groove is used to position the battery pack in the receiving groove. For example, the battery pack is provided with a movable positioning protrusion. When the battery pack is placed in the receiving groove, the positioning protrusion is clamped into the positioning groove by the elastic force acting thereon, thereby positioning the battery pack in the receiving groove. Based on this structure, when the battery pack is taken out of the receiving groove, the positioning protrusion is pulled out of the positioning groove by overcoming the elastic force, and then the battery pack can be slid out of the receiving groove.

[0042] In the illustrated structure, the shell 100 includes a bottom plate 110 and an upper cover 120 which are fastened together by fasteners such as screws. The upper cover 120 includes a top wall 121 and a peripheral wall 122. The edge of the peripheral wall 122 is separated from the edge of the bottom plate 110 to form a recess 111 and a flange 123 which is located in the recess. The receiving groove 101 is located on the upper side of the top wall 121. In this way, the structural strength, sealing property and electrical safety of the shell are ensured while facilitating the assembly of the charger. The materials of the bottom plate and the upper cover are preferably PA6+GF30 [PA6 (polyamide 6) and 30% glass fiber reinforcing material] with a flame retardant level of V0. A nameplate 700 is also embedded between the bottom plate and the upper cover.

[0043] In the illustrated structure, the charging circuit is integrated on a circuit board 400 which is fastened to the upper side of the bottom plate 110. This is used to ensure the structural firmness.

[0044] In the illustrated structure, the bottom plate 110 is provided with a support 112 which supports the circuit board 400 and maintains a gap between the circuit board and the bottom plate and the upper cover. This is used to suspend the circuit board in the shell, so that the heat generated by the circuit board during charging can be diffused in the shell, thereby avoiding direct conduction of the heat generated by the circuit board to the shell.

[0045] In the illustrated structure, the charging output end 300 is fastened to the inner side of the top wall 121 by fasteners and extends to the receiving groove 101 through a through hole 124 in the top wall. In this way, the strength and durability of the charging output end are ensured, and loosening or deformation caused by long-term use is avoided.

[0046] In the illustrated structure, a display 500 connected to the charging circuit is provided in the shell 100, and a transparent window 600 corresponding to the display is provided on the shell. The display is used to display real-time data of charging, such as power, percentage, warning, etc. The real-time data can be viewed through the transparent window to understand the working state of the charger. Moreover, the display is shielded in the shell by the transparent window, thereby avoiding adverse effects from the external environment.

[0047] The display interface of the display can be configured as follows:

[0048] Standby state: plug symbol is bright. This state corresponds to the scenario of the charger being powered on.

[0049] Charging process: battery symbol breathing light breathing state, the number of breathing lights increases with the increase of the battery pack power, for example, 5 breathing lights correspond to different proportions of battery pack power, percentage, this state corresponds to the scenario of normal charging.

[0050] Full charge state: power display 100%, battery symbol breathing light stops breathing and keeps full brightness. This state corresponds to the full scenario.

[0051] Alarm state: battery percentage and battery cell, alarm symbol flashes @ 2HZ. This state corresponds to the scenario of charger or battery pack failure.

[0052] Battery pack temperature protection state: display percentage and battery cell, alarm symbol flashes @ 2HZ. This state corresponds to the scenario of abnormal battery pack temperature.

[0053] Shutdown state: screen is off. This state corresponds to no AC input, no reverse charging.

[0054] In the structure shown, the display 500 is clamped to the inner wall of the shell 100, and the display is as close to the transparent window as possible to facilitate reading.

[0055] Based on the above structure, the charger can meet the following technical requirements:

[0056] Voltage range: 90-130V.

[0057] Frequency range: 50 / 60Hz, minimum 47Hz, maximum 63Hz.

[0058] Input power static loss (120VAC): ≤1W.

[0059] Efficiency (120VAC): ≥80%.

[0060] Output voltage and current: no-load output voltage 0V, charging output voltage 21.1-21.5V, charging output current 2.4±0.25A.

[0061] Charging time: 20V, 1.5Ah / 2Ah battery pack discharged to cut-off voltage, 1 hour full; 20V, 4Ah battery pack discharged to cut-off voltage, 2 hours full.

[0062] Charging display screen 50%, voltage 18.2-18.8V, charging display screen display 100%, voltage 20.5-21V.

[0063] Charge temperature protection: battery pack T foot 10K resistance: charger detects T foot abnormal disconnection, turn off the output; battery pack NTC resistance: charger detects T foot resistance less than 5.5K or greater than 30K, turn off the output.

[0064] Safety test: ambient temperature 25℃, input 100-120VAC 50-60Hz, maximum temperature rise of thermal couple method safety components under rated load 85K, shell surface temperature rise less than 60℃.

[0065] Insulation resistance: 500VDC applied between charger input and output, insulation resistance not less than 10MΩ.

[0066] Withstand voltage strength test: input and output withstand voltage 3000VAC 1 minute or 3600VAC 2 seconds, leakage current less than 5mA, should not be breakdown.

[0067] Output overcurrent protection: when there is any damage to the output current of the charger, the charger should be able to provide output overcurrent protection, once the overcurrent fault is removed, the charger should resume its normal work.

[0068] Output short circuit protection: the charger provides short circuit protection function. Short circuit refers to the impedance of not more than 0.03 ohm. Once the short circuit fault is removed, the charger should resume its normal work.

[0069] Recharge function: after the battery pack over temperature or over voltage protection is removed, the charger automatically resumes the charging state of the battery pack; after the battery pack is fully charged, the battery pack voltage drops to 20V±0.5V, the charger automatically resumes the charging state of the battery pack

[0070] Full load aging test: full load aging test for 100 hours, function is normal.

[0071] Drop test: with 4AH battery pack, free fall from 100cm high to cement floor, three different faces each time, the product needs to be functional.

[0072] Lifting weight test: in normal position, output line needs to lift 9.1kg, lasting 60 seconds, not broken, output performance is normal.

[0073] Swing test: output line lifting 200g, swing angle 120 degrees, 40 times back and forth per minute, electrical performance is normal after 500 times back and forth.

[0074] Interface plug test: AC plug and seat charge interface are respectively plugged in and out 500 times, no deformation and damage, function is normal.

[0075] Temperature: storage: -20℃ to 75℃, operation: -3℃ to 45℃.

[0076] Humidity: Storage: 5-95%.

[0077] Case impact test: the weak point should be able to withstand 1J impact 3 times test, and no fracture phenomenon should appear.

Claims

1. A charger comprising a housing (100), a charging circuit arranged in the housing, an external power supply cord (200) connected to the charging circuit, and a charging output terminal (300), characterized in that: The top of the shell is provided with a receiving groove (101), the receiving groove (101) has a lateral opening (102) for the battery pack to be put into or taken out of the receiving groove through the lateral opening, and a charging output end (300) is arranged in the receiving groove (101) at an end opposite to the lateral opening (102) so as to be electrically connected with the charging output end (300) when the battery pack is put into the receiving groove through the lateral opening and be disconnected from the charging output end when the battery pack is taken out of the receiving groove through the lateral opening.

2. The charger according to claim 1, wherein: The receiving groove (101) is surrounded by a bottom surface (103) arranged at the top of the shell, an end wall (104), a first side wall (105) and a second side wall (106), the end wall, the first side wall and the second side wall extend upward from the edges of the bottom surface, the first side wall and the second side wall are arranged oppositely and one end of them is connected with the end wall and the other end thereof defines the lateral opening (102).

3. The charger of claim 1 or 2, wherein: The side wall of the receiving groove (101) is provided with a sliding groove (107).

4. The charger of claim 1 or 2, wherein: The bottom surface of the receiving groove (101) is provided with a positioning groove (108).

5. The charger of claim 1, wherein: The shell (100) comprises a bottom plate (110) and an upper cover (120) which are fastened together by fasteners, the upper cover comprises a top wall (121) and a peripheral wall (122), the edge of the peripheral wall (122) is provided with a recess (111) and a flange (123) which is located in the recess and is separated from the edge of the bottom plate (110), and the receiving groove (101) is located on the upper side of the top wall (121).

6. The charger of claim 5, wherein: The charging circuit is integrated on a circuit board (400), and the circuit board is fastened to the upper side of the bottom plate (110).

7. The charger of claim 6, wherein: The bottom plate (110) is provided with a support leg (112), the circuit board (400) is supported by the support leg (112) and kept a gap with the bottom plate (110) and the upper cover (120).

8. The charger of claim 5, wherein: The charging output end (300) is fastened to the inner side of the top wall (121) and extends to the receiving groove (101) through a through hole (124) on the top wall.

9. The charger of any of claims 1-2, 5-8, wherein: The shell (100) is provided with a display (500) connected with the charging circuit, and the shell (100) is provided with a transparent window (600) corresponding to the display.

10. The charger of claim 9, wherein: The display (500) is clamped on the inner wall of the shell.

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