Power module and electronic device

Abstract

The utility model discloses a power module and electronic equipment, this power module includes: rechargeable battery, controllable switch unit is connected on the line of rechargeable battery external output electric energy, charge management unit receives external charging input electric energy and provides charging current to rechargeable battery, wake -up unit is connected with charge management unit and when charge management unit output charging electric energy, wake -up unit output wake -up signal, main control unit, when rechargeable battery enters transportation mode, main control unit controls and disconnects controllable switch unit, when rechargeable battery has charging input, charge management unit sends wake -up signal to main control unit through wake -up unit, and main control unit controls and connects controllable switch unit. The utility model disconnects the battery external discharge under transportation mode, avoids the overdischarge of battery, and only when the battery charges can transportation mode be exited, avoids the battery in the transportation process and causes the external discharge again and leads to the exit of transportation mode.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a power module and electronic device. Background Technology

[0002] Transportation mode is a method designed to ensure that the battery in an electronic device retains sufficient charge after transportation or storage.

[0003] During the storage or transportation of electronic devices, the battery voltage may drop to a level where charging is prohibited or even lower, leading to over-discharge and affecting the battery's lifespan. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a power module that disconnects the battery from external discharge in transportation mode to avoid excessive battery discharge and affect battery life. It also exits transportation mode only when the battery is being charged to prevent the battery from exiting transportation mode during transportation and causing it to discharge externally again.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] This application relates to a power module, comprising:

[0007] Rechargeable batteries;

[0008] A controllable switch unit is connected to the line on which the rechargeable battery outputs electrical energy.

[0009] The charging management unit receives external charging input electrical energy and provides charging current to the rechargeable battery.

[0010] A wake-up unit is connected to the charging management unit, and the wake-up unit outputs a wake-up signal when the charging management unit outputs charging power;

[0011] The main control unit is connected to both the wake-up unit and the controllable switch unit.

[0012] When the rechargeable battery enters the transport mode, the main control unit controls the disconnection of the controllable switch unit. When the rechargeable battery has a charging input, the charging management unit sends the wake-up signal to the main control unit through the wake-up unit, and the main control unit controls the connection of the controllable switch unit.

[0013] In some embodiments of this application, the wake-up unit includes:

[0014] The first current-limiting resistor has one end receiving the charging energy output by the charging management unit;

[0015] The second current-limiting resistor is connected in series between the first current-limiting resistor and ground;

[0016] A charging capacitor is connected in parallel with the second current-limiting resistor, and the output terminal of the wake-up unit is connected to the common connection position of the first current-limiting resistor, the second current-limiting resistor, and the charging current.

[0017] In some embodiments of this application, the controllable switching unit includes:

[0018] A controllable switching element has a control terminal, a first terminal, and a second terminal. The control terminal receives a switching control signal output by the main control unit. The first terminal is connected to the discharge port of a rechargeable battery, and the second terminal is connected to the power receiving terminal of an electrical component.

[0019] The switch control signal controls the opening or closing of the controllable switch element.

[0020] In some embodiments of this application, the controllable switching unit includes:

[0021] A controllable switching element has a control terminal, a first terminal, and a second terminal, wherein the control terminal receives a switching control signal output by the main control unit;

[0022] The relay has a first end connected to a power source through its coil, a second end grounded, and one end of the normally open switch of the relay connected to the discharge port of the rechargeable battery, and the other end connected to the power receiving end of the electrical component.

[0023] The switch control signal controls whether the relay is powered on or off.

[0024] In some embodiments of this application, the main control unit receives a command from the rechargeable battery to enter the transport mode via a wired communication cable or a wireless communication module, and the rechargeable battery enters the transport mode.

[0025] In some embodiments of this application, the power supply device further comprises:

[0026] A button unit, connected to the main control unit, is used to activate the rechargeable battery into the transportation mode when the corresponding button representing the rechargeable battery entering the transportation mode is pressed.

[0027] In some embodiments of this application, the corresponding button includes a combination of multiple buttons.

[0028] The power module proposed in this application has the following advantages and beneficial effects:

[0029] When the battery enters the transport mode, the controllable switch unit is disconnected, which means that the battery's power supply line is disconnected. At this time, the battery cannot supply power to the outside, thus avoiding excessive discharge of the battery during transportation and affecting its service life.

[0030] When there is an external charging input, the charging management unit outputs the full-charge voltage of the battery. At this time, the wake-up unit outputs a wake-up signal and causes the main control unit to control the controllable switch unit to connect, that is, the battery's power supply line is connected. At this time, the battery exits the transportation mode and can supply power to the outside. It exits the transportation mode by actively charging externally. There is no manual charging operation during transportation. Therefore, it avoids exiting the transportation mode during transportation and ensures the reliability of entering the transportation mode.

[0031] This application also relates to an electronic device, comprising:

[0032] As described above, the power module contains a rechargeable battery used to supply power to the electrical components in the electronic device.

[0033] In some embodiments of this application, the electronic device is an electronic transmission.

[0034] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a block diagram of an embodiment of the power module proposed in this application;

[0037] Figure 2 This is a circuit diagram of the wake-up unit in the power module embodiment proposed in this application;

[0038] Figure 3 This is an implementation diagram of an embodiment of the controllable switching unit in the power module embodiments proposed in this application;

[0039] Figure 4 This is a diagram illustrating another embodiment of the controllable switching unit in the power module embodiments proposed in this application.

[0040] Figure label:

[0041] 100. Main control unit; 200. Controllable switch unit; 210 / 230. Controllable switch element; 220. Relay; 300. Rechargeable battery; 400. Wake-up unit; 500. Charging management unit. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0043] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] To ensure the reliability of the battery in transport mode during transportation, this application relates to a power module that disconnects the battery's external power output line when the battery is in transport mode, and exits transport mode only when there is an external charging input, ensuring that the battery cannot exit transport mode during transportation without human intervention.

[0047] In some embodiments of this application, see Figure 1The power module includes a rechargeable battery 300, a controllable switch unit 200, a charging management unit 500, a wake-up unit 400, and a main control unit 100.

[0048] The rechargeable battery 300 serves as the power supply for the power module and can be formed by two or more lithium batteries connected in series.

[0049] The controllable switch unit 200 is connected to the line on which the rechargeable battery 300 outputs electrical energy. This line can be considered as the line between the power receiving terminal V of the power-consuming component and the power output terminal of the rechargeable battery 300. That is, when the controllable switch unit 200 is turned on, the line is connected, and the rechargeable battery 300 can output electrical energy. When the controllable switch unit 200 is turned off, the line is disconnected, and the rechargeable battery 300 does not output electrical energy.

[0050] In transport mode, a rechargeable battery of 300 is required that does not output power externally.

[0051] In some embodiments of this application, the controllable switch unit 200 is controlled by the main control unit 100, so that the controllable switch unit 200 is disconnected when the battery enters the transportation mode and connected when it exits the transportation mode.

[0052] In some embodiments of this application, the main control unit 100 can receive a command for the rechargeable battery 300 to enter the transport mode via a wired communication cable or a wireless communication module (not shown), at which time the rechargeable battery 300 can enter the transport mode.

[0053] After receiving the command, the main control unit 100 outputs a switch control signal to the controllable switch unit 200 to control the controllable switch unit 200 to disconnect.

[0054] In some embodiments of this application, the power module further includes a button unit (not shown) connected to the main control unit 100.

[0055] When the corresponding button indicating that the rechargeable battery 300 has entered the transport mode is pressed, the rechargeable battery 300 enters the transport mode.

[0056] There can be one or more corresponding buttons.

[0057] To avoid the battery exiting the transport mode due to a single switch, the corresponding button is selected as a combination of multiple buttons. Only when all of these buttons are pressed simultaneously will the battery exit the transport mode, reducing the chance of false triggering and improving the reliability of the power module during transportation.

[0058] In some embodiments of this application, when there is an external charging input Vin, the charging management unit 500 receives the external charging input and outputs charging energy as the full-charge voltage of the battery. When the wake-up unit 400 receives the charging energy output by the charging management unit 500, it sends a wake-up signal to the main control unit 100.

[0059] When the main control unit 100 receives the wake-up signal, the main control unit 100 outputs a switch control signal to the controllable switch unit 200, controls the controllable switch unit 200 to connect, the battery outputs electrical energy to the outside, and the battery exits the transportation mode.

[0060] When there is no external charging input Vin, the charging management unit 500 has no output (i.e., VOUT is 0V), and the wake-up unit 400 cannot output a wake-up signal to the main control unit 100. For example, when one output terminal of the wake-up unit 400 outputs a wake-up signal, the high level is called a wake-up signal, while the low level is not called a wake-up signal.

[0061] In some embodiments of this application, see Figure 2 The wake-up unit 400 includes a first current-limiting resistor R12, a second current-limiting resistor R13, and a charging capacitor C.

[0062] The first current-limiting resistor R12 can be a single resistor or multiple resistors connected in series and parallel; there is no restriction here. Similarly, the second current-limiting resistor R13 can be a single resistor or multiple resistors connected in series and parallel.

[0063] The first current-limiting resistor R12 and the second current-limiting resistor R13 are connected in series between the charging power VOUT output by the charging management unit 500 and ground, and the charging capacitor C and the second current-limiting resistor R13 are connected in parallel.

[0064] The common connection of the first current-limiting resistor R12, the second current-limiting resistor R13, and the charging capacitor C is connected to the output terminal WKUP of the wake-up unit 400, which outputs the wake-up signal.

[0065] After the battery enters the transport mode, there is no external charging input Vin, and the output VOUT of the charging management unit 500 is 0V. Due to the presence of the second current limiting resistor R13, the output terminal WKUP is pulled low.

[0066] After an external charging input Vin is received, the VOUT output by the charging management unit 500 is the full-charge voltage of the battery. At the moment VOUT is connected, WKUP is still at a low level due to the presence of the charging capacitor C2. Afterwards, VOUT charges the charging capacitor C2 through the first current-limiting resistor R12. After the charging capacitor C2 is fully charged, the level of WKUP becomes high (VOUT / (R12+R13)*R13).

[0067] At this time, after receiving the high level of WKUP, the main control unit 100 controls the controllable switch unit 200 to connect, and the battery outputs power to the outside through the controllable switch unit 200, thereby exiting the transportation mode.

[0068] In order to enable the main control unit 100 to control the on / off state of the controllable switch unit 200, the controllable switch unit 200 may include a controllable switch element.

[0069] The controllable switching element includes a control terminal, a first terminal, and a second terminal. The control terminal receives the switching control signal output by the main control unit 100. The first terminal is connected to the discharge port of the rechargeable battery 300, and the second terminal is connected to the power receiving terminal V of the power-consuming component. 外 .

[0070] The controllable switching element can be a switching element controlled to turn on by a high level or a switching element controlled to turn on by a low level, as long as it meets the requirement that the main control unit 100 controls the controllable switching element to turn off when entering the transportation mode and controls the controllable switching element to turn on when exiting the transportation mode.

[0071] See Figure 3 The controllable switching element 230 can be selected as the low-level switching control element PMOS transistor Q2.

[0072] The gate G of PMOS transistor Q2 is connected to a control port Ctrl of the main control unit 100 that outputs the switch control signal through a current-limiting resistor R7. Its source S is connected to the discharge port of the rechargeable battery 300, and its drain D is connected to the power receiving terminal V. 外 .

[0073] When the main control unit 100 receives a high-level wake-up signal, a low-level switch control signal is output from a control port Ctrl of the main control unit 100, and the PMOS transistor Q2 is turned on. At this time, the discharge port of the rechargeable battery 300 and the power receiving terminal V are connected. 外 When connected, the battery outputs electrical energy.

[0074] When the main control unit 100 receives a low level, its control port Ctrl outputs a high-level switching control signal, and the PMOS transistor Q2 is turned off. At this time, the discharge port of the rechargeable battery 300 and the power receiving terminal V... 外 Disconnected; keep the battery in transport mode.

[0075] The controllable switching unit 200 described above can also be paired with other peripheral devices (such as switching transistors, current-limiting resistors, and diodes) to ensure the normal operation of the controllable switching unit 200.

[0076] See Figure 4It provides another implementation of the controllable switching unit 200.

[0077] The controllable switching unit 200 includes a controllable switching element and a relay.

[0078] The controllable switching element has a control terminal, a first terminal, and a second terminal. The control terminal receives the switching control signal output by the main control unit 100. The first terminal is connected to the power supply Vcc through the coil of a relay. The second terminal is grounded. One end of the normally open switch of the relay is connected to the discharge port of the rechargeable battery 300, and the other end is connected to the power receiving terminal V of the electrical component. 外 .

[0079] See Figure 4 The controllable switching element 210 can be selected as the high-level switching control element NMOS transistor Q1.

[0080] The gate G of NMOS transistor Q1 is connected to a control port Ctrl of the main control unit 100 through a current-limiting resistor R2, the source S is grounded, and the drain D is connected to one end of the coil of relay 220. The other end of the coil is connected to the power supply Vcc through a current-limiting resistor R6.

[0081] When the main control unit 100 receives a high-level wake-up signal, it outputs a high-level signal at one of its control ports Ctrl, turning on the NMOS transistor Q1. At this time, the power supply Vcc powers the coil, its normally open switch closes, and the discharge port of the rechargeable battery 300 and the power receiving port V... 外 When connected, the battery outputs electrical energy.

[0082] When the main control unit 100 receives a low level signal, a low level signal is output at one of its control ports Ctrl. The NMOS transistor Q1 is turned off, and the power supply Vcc does not supply power to the coil. Its normally open switch is open, and the discharge port of the rechargeable battery 300 and the power receiving port V... 外 Disconnected; keep the battery in transport mode.

[0083] In some embodiments of this application, the controllable switching unit 200 can also be constructed using MOS chips and MOS switching devices, which will not be elaborated here.

[0084] It should be noted that this application does not involve the part of the charging management unit 500 that charges the battery.

[0085] This application also relates to an electronic device that may include a power module as described above, wherein a rechargeable battery 300 in the power module supplies power to the electrical components in the electronic device.

[0086] When electronic devices are in transit, the battery is controlled to operate in a transport mode to prevent over-discharge of the battery and reduce the reliability of the electronic devices.

[0087] In some embodiments of this application, the electronic device may be an electronic gearbox for bicycles or other electrically powered electronic devices.

[0088] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A power module, characterized in that, include: Rechargeable batteries; A controllable switch unit is connected to the line on which the rechargeable battery outputs electrical energy. The charging management unit receives external charging input electrical energy and provides charging current to the rechargeable battery. A wake-up unit is connected to the charging management unit, and the wake-up unit outputs a wake-up signal when the charging management unit outputs charging power; The main control unit is connected to both the wake-up unit and the controllable switch unit. When the rechargeable battery enters the transport mode, the main control unit controls the disconnection of the controllable switch unit. When the rechargeable battery has a charging input, the charging management unit sends the wake-up signal to the main control unit through the wake-up unit, and the main control unit controls the connection of the controllable switch unit.

2. The power module according to claim 1, characterized in that, The wake-up unit includes: The first current-limiting resistor has one end receiving the charging energy output by the charging management unit; The second current-limiting resistor is connected in series between the first current-limiting resistor and ground; A charging capacitor is connected in parallel with the second current-limiting resistor, and the output terminal of the wake-up unit is connected to the common connection position of the first current-limiting resistor, the second current-limiting resistor, and the charging current.

3. The power module according to claim 1, characterized in that, The controllable switch unit includes: A controllable switching element has a control terminal, a first terminal, and a second terminal. The control terminal receives a switching control signal output by the main control unit. The first terminal is connected to the discharge port of a rechargeable battery, and the second terminal is connected to the power receiving terminal of an electrical component. The switch control signal controls the opening or closing of the controllable switch element.

4. The power module according to claim 1, characterized in that, The controllable switch unit includes: A controllable switching element has a control terminal, a first terminal, and a second terminal, wherein the control terminal receives a switching control signal output by the main control unit; The relay has a first end connected to a power source through its coil, a second end grounded, and one end of the normally open switch of the relay connected to the discharge port of the rechargeable battery, and the other end connected to the power receiving end of the electrical component. The switch control signal controls whether the relay is powered on or off.

5. The power module according to claim 1, characterized in that, The main control unit receives a command from the rechargeable battery to enter the transport mode via a wired communication cable or a wireless communication module, and the rechargeable battery enters the transport mode.

6. The power module according to claim 1, characterized in that, The power module also has: A button unit, connected to the main control unit, is used to activate the rechargeable battery into the transportation mode when the corresponding button representing the rechargeable battery entering the transportation mode is pressed.

7. The power module according to claim 6, characterized in that, The corresponding button includes a combination of multiple buttons.

8. An electronic device, characterized in that, include: The power module as described in any one of claims 1 to 7, wherein the rechargeable battery in the power module is used to supply power to electrical components in the electronic device.

9. The electronic device according to claim 8, characterized in that, The electronic device is an electronic transmission.

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