Electric bicycle charger with overheating protection function
By using thermal expansion parts to drive the push block in the electric bicycle charger to disconnect the connector from the socket, the short circuit problem caused by the connection between the connector and the external power supply during overheating protection is solved, and the safety performance of the charger is significantly improved.
Patent Information
- Application Number
- CN202421011343.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-10
AI Technical Summary
When the existing electric bicycle charger is overheated, the connector and connection wire are still in communication with the external power supply, and there is a possibility of short circuit and burning.
A charger including a housing, a connecting wire and a connector is designed. The housing is equipped with a charging module and a thermal conductor. The thermal expansion member expands when the temperature is too high, extrudes the gas and pushes the push block. Remove the connector from the socket and cut off the power supply.
Effectively prevent short circuit damage caused by overheating of the charger, improving the safety performance of the charger.
Smart Images
Figure CN222339029U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chargers, in particular to an electric bicycle charger with overheat protection. Background Art
[0002] Electric bicycles are vehicles that use batteries as auxiliary energy and are based on ordinary bicycles. They are equipped with motors, controllers, batteries, control components such as turning handles and brakes, and display instrument systems. Electric bicycles are popular among the public for their advantages such as low price, convenience, and environmental protection. Existing electric bicycles need to be connected to a special charger when charging.
[0003] The existing overheat protection system of electric bicycle chargers can only cut off the internal circuit of the charger when the charger is overheated to prevent the charger from burning. Although this method can cut off the internal circuit of the charger, the connector and connecting wire of the charger are still connected to the external power supply, and there is a possibility of short circuit and burning. Utility Model Content
[0004] The purpose of the utility model is to provide an electric bicycle charger with overheat protection in view of the above-mentioned deficiencies in the prior art.
[0005] The purpose of the utility model is achieved through the following technical solutions: an electric bicycle charger with overheat protection, comprising a shell, a connecting line and a connector; a containing cavity is provided in the shell; a charging module is provided in the containing cavity; the charging module is provided with a heat conducting seat; the connecting line is provided between the shell and the connector;
[0006] A first sealed cavity is provided in the heat-conducting seat; a heat expansion member is provided in the first sealed cavity;
[0007] A second sealed cavity is provided in the connector; a push block is provided in the second sealed cavity for telescopic movement; one end of the push block protrudes out of the second sealed cavity;
[0008] The connecting line is provided with an air channel; one end of the air channel is communicated with the first sealed cavity; and the other end of the air channel is communicated with the second sealed cavity.
[0009] The utility model is further configured that the heat expansion component is an air bag; and the air bag is provided with a heat expansion liquid.
[0010] The utility model is further configured that the heat expansion component is a heat expansion metal.
[0011] The utility model is further configured that a plurality of heat dissipation fins are provided on the top of the heat-conducting seat.
[0012] The utility model is further configured that the heat conducting seat is provided with an end cover; the end cover is provided with a connecting rod; the connecting rod is provided with a channel;
[0013] One end of the connecting line protrudes into the accommodating cavity and is connected to the connecting rod; the other end of the connecting line is connected to the connector; and one end of the airway is communicated with the first sealing cavity through a channel.
[0014] The utility model is further configured that the end cover is detachably connected to the heat conducting seat.
[0015] The utility model is further configured that a movable cavity is provided in the connector; the push block is telescopically arranged in the movable cavity; one end of the push block protrudes out of the movable cavity;
[0016] A blocking plate is arranged on the top of the movable cavity; and the second sealed cavity is formed between the other end of the push block, the blocking plate and the movable cavity.
[0017] The utility model is further configured that a blocking block is provided at the bottom of the blocking plate; the blocking block abuts against the top of the push block;
[0018] A placement slot is provided on the top of the push block; a floating pin is provided in the placement slot for telescopic movement; a return spring is provided between the floating pin and the placement slot;
[0019] One end of the blocking block is provided with a first inclined surface for lowering the floating pin; the other end of the blocking block is provided with a second inclined surface for raising the floating pin.
[0020] The utility model is further configured that the movable cavity is provided with a guide groove; and the push block is provided with a guide block matched with the guide groove.
[0021] The utility model is further configured that the movable cavity is provided with a limiting groove; and the push block is provided with a limiting block matched with the limiting groove.
[0022] Beneficial effects of the utility model: the utility model expands through the heat expansion part, thereby squeezing the gas in the first sealed cavity, so that the gas pressure in the airway increases, thereby pushing one end of the push block to protrude out of the connector, and one end of the push block presses against the external socket, so that the connector falls off from the socket, cutting off the power supply of the entire charger, thereby improving the safety performance of the charger. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.
[0024] Figure 1 It is a structural schematic diagram of the utility model;
[0025] Figure 2It is a cross-sectional view of the utility model;
[0026] Figure 3 yes Figure 2 A partial enlarged view of the middle A area;
[0027] Figure 4 yes Figure 2 A partial enlarged view of the B area;
[0028] Figure 5 is a cross-sectional view of the connector of the utility model at normal temperature;
[0029] Figure 6 It is a structural schematic diagram of the push block of the utility model;
[0030] Among them: 1. Shell; 11. Accommodating cavity; 12. Charging module; 2. Connecting wire; 21. Airway; 3. Connector; 31. Active cavity; 32. Second sealed cavity; 4. Heat-conducting seat; 41. First sealed cavity; 42. Thermal expansion member; 43. Heat dissipation fin; 44. End cover; 45. Connecting rod; 46. Channel; 5. Push block; 51. Placement groove; 52. Floating pin; 53. Reset spring; 6. Blocking plate; 61. Blocking block; 62. First inclined surface; 63. Second inclined surface; 71. Guide groove; 72. Guide block; 81. Limit groove; 82. Limit block. DETAILED DESCRIPTION
[0031] The utility model is further described in conjunction with the following embodiments.
[0032] Depend on Figures 1 to 5 It can be seen that the overheat protection electric bicycle charger described in this embodiment includes a housing 1, a connecting line 2 and a connector 3; the housing 1 is provided with a housing cavity 11; the housing cavity 11 is provided with a charging module 12; the charging module 12 is provided with a heat conducting seat 4; the connecting line 2 is provided between the housing 1 and the connector 3;
[0033] A first sealed cavity 41 is provided in the heat conducting seat 4; a heat expansion member 42 is provided in the first sealed cavity 41;
[0034] A second sealed cavity 32 is provided in the connector 3; a push block 5 is provided in the second sealed cavity 32 for telescopic movement; one end of the push block 5 protrudes out of the second sealed cavity 32;
[0035] The connecting line 2 is provided with an air passage 21 ; one end of the air passage 21 is communicated with the first sealed cavity 41 ; the other end of the air passage 21 is communicated with the second sealed cavity 32 .
[0036] Specifically, in the electric bicycle charger with overheat protection described in this embodiment, when the charging module 12 in the shell 1 is overheated, the heat is conducted to the heat expansion member 42 through the heat conductive seat 4, and the heat expansion member 42 expands, thereby squeezing the gas in the first sealed cavity 41, so that the gas pressure in the airway 21 increases, thereby pushing one end of the push block 5 to protrude out of the connector 3, and one end of the push block 5 is pressed against the external socket, so that the connector 3 falls off from the socket, cutting off the power supply of the entire charger, thereby improving the safety performance of the charger.
[0037] In the overheat protection electric bicycle charger described in this embodiment, the heat expansion member 42 is an airbag; the airbag is provided with a heat expansion liquid. The heat expansion liquid can be ethyl acetate, alcohol or water, etc. When the temperature reaches a threshold, the heat expansion liquid begins to evaporate, thereby increasing the volume of the airbag, thereby squeezing the gas in the first sealed cavity 41.
[0038] In the electric bicycle charger with overheat protection described in this embodiment, the heat expansion member 42 is a heat expansion metal. The heat expansion member 42 can also be a heat expansion metal, such as copper, aluminum, zinc or magnesium. When the temperature reaches the threshold, the heat expansion metal expands due to heat, and the volume of the heat expansion metal increases, thereby squeezing the gas in the first sealed cavity 41.
[0039] In the overheat protection electric bicycle charger described in this embodiment, a plurality of heat dissipation fins 43 are provided on the top of the heat-conducting seat 4. Specifically, the heat dissipation effect of the charger can be improved through the above arrangement.
[0040] In the overheat protection electric bicycle charger described in this embodiment, the heat-conducting seat 4 is provided with an end cover 44; the end cover 44 is provided with a connecting rod 45; the connecting rod 45 is provided with a channel 46;
[0041] One end of the connecting line 2 protrudes into the accommodating cavity 11 and is connected to the connecting rod 45 ; the other end of the connecting line 2 is connected to the connector 3 ; one end of the airway 21 is connected to the first sealed cavity 41 through the channel 46 .
[0042] Specifically, in this embodiment, the end cover 44 and the connecting rod 45 are provided to facilitate the connection between the connecting wire 2 and the heat conducting seat 4 .
[0043] In the overheat protection electric bicycle charger described in this embodiment, the end cover 44 is detachably connected to the heat-conducting seat 4. Specifically, the above arrangement facilitates the user to repair or replace the heat expansion member 42 in the heat-conducting seat 4.
[0044] In the electric bicycle charger with overheat protection described in this embodiment, a movable cavity 31 is provided in the connector 3; the push block 5 is telescopically movably provided in the movable cavity 31; one end of the push block 5 protrudes out of the movable cavity 31; a blocking plate 6 is provided on the top of the movable cavity 31; the second sealed cavity 32 is formed between the other end of the push block 5, the blocking plate 6 and the movable cavity 31. In the electric bicycle charger with overheat protection described in this embodiment, a blocking block 61 is provided at the bottom of the blocking plate 6; the blocking block 61 abuts against the top of the push block 5; a placement groove 51 is provided on the top of the push block 5; a floating pin 52 is telescopically movably provided in the placement groove 51; a reset spring 53 is provided between the floating pin 52 and the placement groove 51; a first inclined surface 62 for lowering the floating pin 52 is provided at one end of the blocking block 61; a second inclined surface 63 for raising the floating pin 52 is provided at the other end of the blocking block 61.
[0045] Specifically, Figure 5 As shown, when the charging module 12 is working at normal temperature, the push block 5 retracts into the active cavity 31. Under the action of the blocking block 61 and the floating pin 52, the floating pin 52 is located at one end of the blocking block 61. At this time, the user can plug the connector 3 into an external socket.
[0046] like Figure 3 and Figure 4 As shown, when the temperature of the charging module 12 in the shell 1 exceeds the threshold, the heat is conducted to the heat expansion member 42 through the heat conductive seat 4, and the heat expansion member 42 expands, thereby squeezing the gas in the first sealed cavity 41, so that the gas pressure in the airway 21 increases, thereby pushing the push block 5 to move away from the connecting line 2. During the movement of the push block 5, the first inclined surface 62 presses down the floating pin 52 so that the reset spring 53 is in an energy storage state; when the push block 5 moves to the bottom of the push block 5, under the reset action of the reset spring 53, in cooperation with the second inclined surface 63, one end of the push block 5 can quickly extend out of the active cavity 31, and under the action of this rapid response, the connector 3 can be ensured to fall off from the socket, cutting off the power supply of the entire charger, thereby improving the safety performance of the charger.
[0047] In the overheat protection electric bicycle charger described in this embodiment, the movable cavity 31 is provided with a guide groove 71; the push block 5 is provided with a guide block 72 matched with the guide groove 71. The above arrangement can guide the movement of the push block 5.
[0048] In the overheat protection electric bicycle charger described in this embodiment, the movable cavity 31 is provided with a limiting groove 81; the push block 5 is provided with a limiting block matched with the limiting groove 81. The above arrangement can play a role in limiting the movement of the push block 5.
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.
Claims
1. An electric bicycle charger with overheat protection, characterized in that: The invention comprises a housing (1), a connecting line (2) and a connector (3); the housing (1) is provided with a receiving chamber (11); the receiving chamber (11) is provided with a charging module (12); the charging module (12) is provided with a heat conducting seat (4); the connecting line (2) is provided between the housing (1) and the connector (3); A first sealed cavity (41) is provided in the heat-conducting seat (4); a heat expansion element (42) is provided in the first sealed cavity (41); A second sealed cavity (32) is provided in the connector (3); a push block (5) is telescopically provided in the second sealed cavity (32); one end of the push block (5) protrudes out of the second sealed cavity (32); The connecting line (2) is provided with an air channel (21); one end of the air channel (21) is in communication with a first sealed cavity (41); and the other end of the air channel (21) is in communication with a second sealed cavity (32).
2. The overheat protection electric bicycle charger according to claim 1, characterized in that: The heat expansion member (42) is an air bag; a heat-expandable liquid is arranged in the air bag.
3. The overheat protection electric bicycle charger according to claim 1, characterized in that: The heat expansion member (42) is a heat expansion metal.
4. The overheat protection electric bicycle charger according to claim 1, characterized in that: A plurality of heat dissipation fins (43) are provided on the top of the heat conducting seat (4).
5. The overheat protection electric bicycle charger according to claim 1, characterized in that: The heat conducting seat (4) is provided with an end cover (44); the end cover (44) is provided with a connecting rod (45); the connecting rod (45) is provided with a channel (46); One end of the connecting line (2) protrudes into the accommodating cavity (11) and is connected to the connecting rod (45); the other end of the connecting line (2) is connected to the connector (3); and one end of the airway (21) is connected to the first sealing cavity (41) through a channel (46).
6. An electric bicycle charger with overheat protection according to claim 5, characterized in that: The end cover (44) is detachably connected to the heat conducting seat (4).
7. The overheat protection electric bicycle charger according to claim 1, characterized in that: The connector (3) is provided with an active cavity (31); the push block (5) is telescopically arranged in the active cavity (31); one end of the push block (5) protrudes out of the active cavity (31); A blocking plate (6) is provided on the top of the active cavity (31); the second sealed cavity (32) is formed between the other end of the push block (5), the blocking plate (6) and the active cavity (31).
8. An electric bicycle charger with overheat protection according to claim 7, characterized in that: A blocking block (61) is provided at the bottom of the blocking plate (6); the blocking block (61) abuts against the top of the push block (5); A placement groove (51) is provided on the top of the push block (5); a floating pin (52) is telescopically provided in the placement groove (51); a return spring (53) is provided between the floating pin (52) and the placement groove (51); One end of the blocking block (61) is provided with a first inclined surface (62) for lowering the floating pin (52); the other end of the blocking block (61) is provided with a second inclined surface (63) for raising the floating pin (52).
9. The overheat protection electric bicycle charger according to claim 7, characterized in that: The movable cavity (31) is provided with a guide groove (71); and the push block (5) is provided with a guide block (72) matched with the guide groove (71).
10. An electric bicycle charger with overheat protection according to claim 7, characterized in that: The movable cavity (31) is provided with a limiting groove (81); and the push block (5) is provided with a limiting block that cooperates with the limiting groove (81).