Battery charging device capable of being externally connected with discharge load

Abstract

The utility model discloses a battery charging device capable of being externally connected with a discharge load, and relates to the field of battery charging devices. According to the utility model, the discharging interface and the first switch are configured in the charger, when discharging is needed, the external load is connected to the discharging interface, and the first switch is controlled to be switched on through the controller, so that the lithium battery externally connected with the battery charging interface supplies power to the external load; the external load is not limited by the structure of the charger and can meet a high-power load required by a player, high-power quick discharge of the battery is realized, the electric quantity of the battery is quickly reduced to a suitable storage range, the discharge waiting time of the player is shortened, and the use experience of the charger is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery charging devices, in particular to a battery charging device capable of being externally connected to a discharge load. Background Art

[0002] RC model, or remote control model, is a model toy that can be operated by remote control or radio control. It covers a wide range, including remote control car models, aircraft models, ship models, etc. RC model is a toy that integrates entertainment, competition, and technology. It can not only bring endless fun and challenges to players, but also promote players' understanding and mastery of scientific and technological knowledge.

[0003] In the RC model, the battery used in the power system has a vital impact on the performance of the model, which directly affects the performance and running time of the model. In addition to matching in type and parameters, the maintenance of the RC model battery is also an important part of the use process. The battery should avoid overcharging and over-discharging to avoid damage to the battery. In particular, after each use, the battery power should be controlled between 40% and 60%, and stored separately in a low temperature, dry and light-proof environment. At the same time, if it is not used for a long time, it needs to be recharged every 3 to 6 months to keep the battery in the best storage state.

[0004] For this reason, the charger dedicated to RC model batteries is equipped with a special charging mode to extend the service life of the battery. During operation, the charger will charge or discharge the battery to keep the battery power within a stable preset range. At present, the charger mainly discharges the excess power of the battery by connecting the battery to a built-in resistor. However, the battery power consumed by the resistor will be converted into heat, so a heat dissipation device needs to be configured. If the resistance is too large, it will be difficult to meet the heat dissipation requirements in the small space of the charger, and it is easy to cause safety hazards. If the resistance is small, the discharge efficiency is too low, which will prolong the time the battery is in charging mode, thereby affecting the user experience.

[0005] It can be seen that the discharge performance of the current RC model battery charger is difficult to take into account both safety and user experience requirements. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the main purpose of the utility model is to provide a battery charging device that can be externally connected to a discharge load, which can realize high-power rapid discharge of the battery, so that the battery power drops quickly to a range suitable for storage, reducing the player's discharge waiting time and improving the charger usage experience.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a battery charging device capable of externally connecting a discharge load, comprising a charging circuit, a battery charging interface and a controller, wherein the battery charging interface is electrically connected to the charging circuit, and further comprising a discharge circuit, wherein the discharge circuit comprises a discharge interface and a first switch, wherein the discharge interface is electrically connected to the battery charging interface, and the first switch is arranged on a connection line between the battery charging interface and the discharge interface, and the controller controls the connection to the first switch to control the battery power supply externally connected to the battery charging interface to be connected to the load externally connected to the discharge interface.

[0008] Optionally, the charging circuit includes a second switch, which is arranged on a connection line between the charging circuit and the battery charging interface, and the controller is controlled to be connected to the second switch.

[0009] Optionally, the discharge circuit also includes a discharge conversion circuit, the input side of the discharge conversion circuit is connected to the battery charging interface, the output side of the battery charging interface is connected to the discharge interface, and the second switch is arranged on the connection line between the battery charging interface and the discharge conversion circuit.

[0010] Furthermore, the discharge interface is a UVW three-phase interface.

[0011] Furthermore, the discharge conversion circuit is a DC-AC inverter circuit, and the controller is controlled to be connected to the discharge conversion circuit.

[0012] Optionally, the battery charging interface is a power charging interface.

[0013] Optionally, a voltage detection circuit is also included, and the voltage detection circuit is used to detect the voltage of the battery externally connected to the battery charging interface and provide it to the controller to obtain the battery power.

[0014] Optionally, the discharge circuit further includes a resistor and a third switch, the resistor is electrically connected to the battery charging interface, the third switch is arranged on a connection line between the resistor and the battery charging interface, and the controller is controlled to be connected to the third switch.

[0015] Optionally, the charging circuit also includes a charging conversion circuit and an input power interface, and the controller controls the connection to the charging conversion circuit.

[0016] Optionally, the charging conversion circuit is an AC-DC conversion circuit or a DC-DC conversion circuit.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) The utility model is provided with a charging circuit and a discharge circuit including a discharge interface and a first switch. The charging circuit is used to charge a lithium battery connected to the battery charging interface. When discharge is required, the external load is connected to the discharge interface. The controller controls the first switch to be turned on, so that the lithium battery connected to the battery charging interface supplies power to the external load. The external load is not limited by the charger structure and can meet the high-power load required by the player, thereby realizing high-power rapid discharge of the battery, so that the battery power drops rapidly to a range suitable for storage, reducing the player's discharge waiting time and improving the charger usage experience.

[0019] (2) Furthermore, the utility model is provided with a DC-AC inverter circuit, and the discharge interface is configured as a UVW three-phase interface. Under the control of the controller, the battery connected to the battery charging interface can be used to power the three-phase motor, thereby realizing high-power and rapid discharge of the battery. At the same time, the three-phase motor is a common load for players and is easy to use.

[0020] (3) Furthermore, the utility model is equipped with a voltage measurement circuit, and the measured voltage value can be used to calculate the battery power, so that the first switch can be automatically disconnected after the battery power drops to a target value.

[0021] (4) Furthermore, the utility model is equipped with a resistor and a third switch, which can be used for conventional low-power discharge of the battery.

[0022] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A circuit block diagram of a battery charging device according to the utility model;

[0024] Figure 2 A schematic structural diagram of a first conducting state of a battery charging device according to the utility model;

[0025] Figure 3 A schematic structural diagram of a second conduction state of a battery charging device according to the utility model;

[0026] Figure 4 A detailed circuit block diagram of a battery charging device according to the present invention.

[0027] Figure numerals: 10, charging circuit; 11, input power interface; 12, charging conversion circuit; 13, second switch; 14, voltage detection circuit; 20, battery charging interface; 30, controller; 40, discharge circuit; 41, discharge interface; 42, first switch; 43, discharge conversion circuit; 44, resistor; 45, third switch; 50, AC power supply; 60, lithium battery; 70, motor. DETAILED DESCRIPTION

[0028] In order to better illustrate the purpose, technical solution and advantages of the utility model, the specific implementation of the utility model is further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but are not intended to limit the scope of the utility model.

[0029] like Figure 1 As shown, a battery charging device that can be externally connected to a discharge load according to an embodiment of the utility model. The charging device includes a charging circuit 10, a battery charging interface 20, a controller 30 and a discharge circuit 40. Among them, the battery charging interface 20 is used to be electrically connected to the battery. The output end of the charging circuit 10 is electrically connected to the battery charging interface 20, and a second switch 13 is arranged between the charging circuit 10 and the battery charging interface 20. The discharge circuit 40 includes at least a discharge interface 41 and a first switch 42. The discharge interface 41 is electrically connected to the battery charging interface 20, and is used to be electrically connected to an external load. The first switch 42 is arranged on the connection line between the battery charging interface 20 and the discharge interface 41. The controller 30 controls the connection to the first switch 42 and the second switch 13 respectively.

[0030] When in use, if charging is required, the second switch 13 is controlled to be turned on, and the charging circuit 10 charges the connected battery through the battery charging interface 20. If discharging is required, the first switch 42 is controlled to be turned on, and the battery supplies power to the load connected to the discharge interface 41 through the battery charging interface 20, with the battery power. It can be understood that the first switch 42 and the second switch 13 are not turned on at the same time.

[0031] It can be seen that the utility model is provided with an external load that can be connected to the discharge interface 41 and is used to consume the power of the battery connected to the battery charging interface 20. The external load is not limited by the charger structure and can meet the high-power load required by the player, thereby realizing high-power rapid discharge of the battery, so that the battery power drops quickly to a range suitable for storage, reducing the player's discharge waiting time and improving the charger usage experience.

[0032] like Figure 2 and Figure 3As shown, it is a battery charging device according to a specific embodiment of the utility model. The charging device includes an input power interface 11, a charging conversion circuit 12, a second switch 13, and a battery charging interface 20 which are electrically connected in sequence. Specifically, the input power interface 11 is an AC power supply, and the charging conversion circuit 12 is configured as an AC-DC conversion circuit. The controller 30 controls the connection to the AC-DC conversion circuit and the second switch 13 respectively. The battery charging interface 20 is a power charging interface, which is adapted to the power transmission line of the lithium battery 60. The charging device also includes a first switch 42, a discharge conversion circuit 43, and a discharge interface 41 which are electrically connected to the battery charging interface 20 in sequence. The discharge conversion circuit 43 is a DC-AC inverter circuit. The discharge interface 41 is a UVW three-phase interface. The controller 30 controls the connection to the DC-AC inverter circuit and the first switch 42 respectively.

[0033] During charging, the controller 30 controls the second switch 13 to be turned on, controls the first switch 42 to be turned off, and controls the AC-DC conversion circuit to operate, so that the power input to the power interface 11 is converted to charge the lithium battery 60 on the battery charging interface 20. During discharging, the controller 30 controls the second switch 13 to be turned off, controls the first switch 42 to be turned on, and controls the DC-AC inverter circuit to operate, so that the direct current of the lithium battery 60 is inverted into alternating current to power the three-phase motor 70 on the discharge interface 41. It is worth mentioning that the controller 30 can control the operation of the DC-AC inverter circuit so that the motor 70 runs at different speeds, thereby adjusting the discharge power, thereby adapting to the discharge of different lithium batteries 60.

[0034] It is understood that in other embodiments, if the input power source is direct current, the charging conversion circuit 12 can also be a DC-DC conversion circuit. To adapt to the DC motor 70, the discharging conversion circuit 43 can also be configured as or additionally provided with a DC-DC conversion circuit.

[0035] It is worth noting that in other embodiments, the switch directly connected to the input power interface 11 and the battery charging interface 20 in the AC-DC conversion circuit can be used as the second switch 13, and the controller 30 can realize the disconnection between the AC power supply 50 and the lithium battery 60 by controlling the charging conversion circuit 12. In the same principle, the switch directly connected to the battery charging interface 20 and the discharge interface 41 in the DC-AC inverter circuit can be used as the first switch 42, and the discharge conversion circuit 43 can be controlled to realize the disconnection between the lithium battery 60 and the motor 70.

[0036] like Figure 4As shown, a battery charging device according to a specific embodiment of the utility model is shown. The battery charging device includes an input power interface 11, a charging conversion circuit 12, a second switch 13, and a battery charging interface 20 electrically connected in sequence, a first switch 42, a discharge conversion circuit 43, and a discharge interface 41 electrically connected to the battery charging interface 20 in sequence, a voltage detection circuit 14 connected to the battery charging interface 20 at one end and connected to the controller 30 at the other end, and a third switch 45 and a resistor 44 connected to the battery charging interface 20 in sequence.

[0037] During the discharge process, the controller 30 obtains the voltage value of the external battery on the battery charging interface 20 through the voltage detection circuit 14 and calculates the battery power. When the battery power reaches a preset range, the controller 30 turns off the first switch 42 to stop the discharge process.

[0038] When there is no external load on the discharge interface 41 , the controller 30 controls the first switch 42 and the second switch 13 to be disconnected, and controls the third switch 45 to be turned on. The battery externally connected to the battery charging interface 20 will supply power to the resistor 44 , thereby realizing the discharge function.

[0039] The above embodiments mainly describe the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A battery charging device capable of externally connecting a discharge load, comprising a charging circuit (10), a battery charging interface (20) and a controller (30), wherein the battery charging interface (20) is electrically connected to the charging circuit (10), characterized in that: The invention also comprises a discharge circuit (40), the discharge circuit (40) comprising a discharge interface (41) and a first switch (42), the discharge interface (41) being electrically connected to the battery charging interface (20), the first switch (42) being arranged on a connection line between the battery charging interface (20) and the discharge interface (41), and the controller (30) being connected to the first switch (42) to control the battery power supply externally connected to the battery charging interface (20) to be connected to the load externally connected to the discharge interface (41).

2. A battery charging device capable of externally connecting a discharge load according to claim 1, characterized in that: The charging circuit (10) comprises a second switch (13), the second switch (13) being arranged on a connection line between the charging circuit (10) and a battery charging interface (20), and the controller (30) being controlled to be connected to the second switch (13).

3. A battery charging device capable of externally connecting a discharge load according to claim 2, characterized in that: The discharge circuit (40) further comprises a discharge conversion circuit (43), the input side of the discharge conversion circuit (43) being connected to the battery charging interface (20), the output side of the battery charging interface (20) being connected to the discharge interface (41), and the second switch (13) being arranged on a connection line between the battery charging interface (20) and the discharge conversion circuit (43).

4. A battery charging device capable of externally connecting a discharge load according to claim 3, characterized in that: The discharge interface (41) is a UVW three-phase interface.

5. A battery charging device capable of externally connecting a discharge load according to claim 4, characterized in that: The discharge conversion circuit (43) is a DC-AC inverter circuit, and the controller (30) is controlled to be connected to the discharge conversion circuit (43).

6. A battery charging device capable of externally connecting a discharge load according to claim 1, characterized in that: The battery charging interface (20) is a power charging interface.

7. A battery charging device capable of externally connecting a discharge load according to claim 1, characterized in that: It also includes a voltage detection circuit (14), which is used to detect the voltage of a battery externally connected to the battery charging interface (20) and provide it to the controller (30) to obtain the battery power.

8. A battery charging device capable of externally connecting a discharge load according to claim 1, characterized in that: The discharge circuit (40) further comprises a resistor (44) and a third switch (45), wherein the resistor (44) is electrically connected to the battery charging interface (20), the third switch (45) is arranged on a connection line between the resistor (44) and the battery charging interface (20), and the controller (30) controls the connection to the third switch (45).

9. A battery charging device capable of externally connecting a discharge load according to claim 1, characterized in that: The charging circuit (10) further comprises a charging conversion circuit (12) and an input power interface (11), and the controller (30) is controlled to be connected to the charging conversion circuit (12).

10. A battery charging device capable of externally connecting a discharge load according to claim 9, characterized in that: The charging conversion circuit (12) is an AC-DC conversion circuit or a DC-DC conversion circuit.

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