Drive device and drive management device

Abstract

The present disclosure provides a driving device for respectively providing a charging control signal and a discharging control signal to a charging control switch and a discharging control switch to control the charging and discharging of a battery pack. The charging control switch and the discharging control switch are NMOS transistors and are connected between the positive electrode terminal of the battery pack and the positive electrode terminal of the load / charger. The driving device includes a driving unit, and the driving unit provides a charging control signal higher than the battery-side voltage of the positive electrode terminal of the battery pack by a first voltage to the gate of the charging control switch, and the driving unit provides a discharging control signal higher than the load / charger-side voltage of the positive electrode terminal of the load / charger by a first voltage to the gate of the discharging control switch. The present disclosure also provides a driving management device.

Description

Technical Field

[0001] The present disclosure relates to a driving device and a driving management device. Background Art

[0002] Rechargeable secondary batteries have been widely used in various applications. The charging and discharging of secondary batteries are controlled by a charging control switch and a discharging control switch. In the charging and discharging control of secondary batteries, how to perform reliable and stable control is a problem to be solved. For example, when the charging and discharging control switch is connected between the positive terminal of the battery pack and the positive terminal of the load / charger, stable and rapid charging and discharging control is required. Summary of the Invention

[0003] To solve one of the above technical problems, the present disclosure provides a driving device and a driving management device.

[0004] According to one aspect of the present disclosure, a driving device is provided. The driving device is configured to provide a charging control signal and a discharging control signal to a charging control switch and a discharging control switch respectively to control the charging and discharging of a battery pack. The charging control switch and the discharging control switch are NMOS transistors and are connected between the positive terminal of the battery pack and the positive terminal of the load / charger.

[0005] The driving device includes a driving unit. The driving unit provides a charging control signal that is higher than the battery-side voltage of the positive terminal of the battery pack by a first voltage to the gate of the charging control switch, and the driving unit provides a discharging control signal that is higher than the load / charger-side voltage of the positive terminal of the load / charger by a first voltage to the gate of the discharging control switch.

[0006] In the driving device according to at least one embodiment of the present disclosure, the source of the charging control switch is connected to the positive terminal of the battery pack, and the drain of the charging control switch is connected to the drain of the discharging control switch. The source of the discharging control switch is connected to the positive terminal of the charger / load. The gates of the charging control switch and the discharging control switch are respectively connected to the driving unit, and the driving unit provides the charging control signal and the discharging control signal to control the conduction and disconnection of the charging control switch and the discharging control switch.

[0007] A driving device according to at least one embodiment of the present disclosure, wherein the source of the charging control switch is connected to the positive terminal of the battery pack, and the source of the discharging control switch is connected to the positive terminal of the battery pack. The drain of the charging control switch is connected to the positive terminal of the load, and the drain of the discharging control switch is connected to the positive terminal of the charger. The gates of the charging control switch and the discharging control switch are respectively connected to the driving unit, and the driving unit provides the charging control signal and the discharging control signal to control the conduction and disconnection of the charging control switch and the discharging control switch.

[0008] A driving device according to at least one embodiment of the present disclosure, wherein the charging control switch is a charging control switch formed by paralleling two or more NMOS transistors, and / or the discharging control switch is a discharging control switch formed by paralleling two or more NMOS transistors.

[0009] A driving device according to at least one embodiment of the present disclosure further includes a pre-charging control switch. The pre-charging control switch is a PMOS transistor. The drain of the pre-charging control switch is connected to the positive terminal of the battery pack. The source of the pre-charging control switch is connected to the drain of the charging control switch, and the gate of the pre-charging control switch receives a pre-charging control signal from the driving unit; or the pre-charging control switch is an NMOS transistor. The source of the pre-charging control switch is connected to the positive terminal of the battery pack. The drain of the pre-charging control switch is connected to the drain of the charging control switch, and the gate of the pre-charging control switch receives a pre-charging control signal from the driving unit.

[0010] A driving device according to at least one embodiment of the present disclosure further includes a pre-discharging control switch. The pre-discharging control switch is an NMOS transistor. The drain of the pre-discharging control switch is connected to the drain of the discharging control switch. The source of the pre-discharging control switch is connected to the positive terminal of the load, and the gate of the pre-discharging control switch receives a pre-discharging control signal from the driving unit; or the pre-discharging control switch is a PMOS transistor. The source of the pre-discharging control switch is connected to the drain of the discharging control switch. The drain of the pre-discharging control switch is connected to the positive terminal of the load, and the gate of the pre-discharging control switch receives a pre-discharging control signal from the driving unit.

[0011] A driving device according to at least one embodiment of the present disclosure further includes a first charge pump unit. The first charge pump unit generates a charge pump voltage for the charging control switch, which is the sum of the battery-side voltage and the first voltage, and the charge pump voltage for the charging control switch is provided to the driving unit to generate a charging control signal.

[0012] The driving device according to at least one embodiment of the present disclosure further includes a second charge pump unit. The second charge pump unit generates a charge pump voltage for the discharge control switch, which is the sum of the load / charger side voltage and the first voltage, and the charge pump voltage for the discharge control switch is supplied to the driving unit to generate a discharge control signal.

[0013] In the driving device according to at least one embodiment of the present disclosure, the first charge pump unit and the second charge pump unit each include a circuit module. The circuit module includes a first PMOS transistor, a second PMOS transistor, a first resistor, a third PMOS transistor, a first NMOS transistor, and a first inverter.

[0014] The source of the first PMOS transistor, the first end of the first resistor, and the source of the third PMOS transistor are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor is connected to its gate, and the drain of the first PMOS transistor is connected to the source of the second PMOS transistor. The drain of the second PMOS transistor is connected to its gate, and the drain of the second PMOS transistor is connected to the drain of the first NMOS transistor. The source of the first NMOS transistor is grounded. The drain of the second PMOS transistor is connected to the other end of the first resistor and the gate of the third PMOS transistor. The gate of the first NMOS transistor is connected to the output terminal of the first inverter. The drain of the third PMOS transistor serves as a second connection point, and the input terminal of the first inverter is connected to a pulse signal.

[0015] In the driving device according to at least one embodiment of the present disclosure, the first charge pump unit further includes a second NMOS transistor, a first diode, and a second diode.

[0016] The first connection point of the circuit module of the first charge pump unit is connected to the battery side voltage, and the second connection point is connected to one end of a first capacitor. The other end of the first capacitor is connected to the cathode of the first diode. The anode of the first diode is connected to the first voltage. The cathode of the first diode is also connected to the anode of the second diode. The cathode of the second diode is connected to one end of a second capacitor. The other end of the second capacitor is connected to the battery side voltage. The connection point between the cathode of the second diode and one end of the second capacitor serves as the output terminal of the charge pump voltage for the charging control switch. The pulse signal is also connected to the gate of the second NMOS transistor, and the source of the second NMOS transistor is grounded.

[0017] In the driving device according to at least one embodiment of the present disclosure, the first charge pump unit further includes a third NMOS transistor, a third diode, and a fourth diode.

[0018] The first connection point of the circuit module of the second charge pump unit is connected to the load / charger side voltage, and the second connection point is connected to one end of a third capacitor. The other end of the third capacitor is connected to the cathode of a third diode. The anode of the third diode is connected to the first voltage. The cathode of the third diode is also connected to the anode of a fourth diode. The cathode of the fourth diode is connected to one end of a fourth capacitor. The other end of the fourth capacitor is connected to the load / charger side voltage. The connection point between the cathode of the fourth diode and one end of the fourth capacitor serves as the output terminal of the charge pump voltage for the discharge control switch. The pulse signal is also connected to the gate of the third NMOS transistor, and the source of the third NMOS transistor is grounded.

[0019] For a driving device according to at least one embodiment of the present disclosure, the driving unit includes a charging driving unit, and the charging driving unit includes two of the circuit modules, a second inverter, a fourth NMOS transistor, a fifth NMOS transistor, a sixth NMOS transistor, and a second resistor.

[0020] The first connection point of the first circuit module of the two circuit modules is connected to the charge pump voltage for the charging control switch, and the second connection point of the first circuit module is connected to the gate of the charging control switch. The output terminal of the second inverter is connected to the input terminal of the first inverter of the first circuit module, and the second inverter is connected to a charging enable signal.

[0021] The first connection point of the second circuit module of the two circuit modules is connected to the charge pump voltage for the charging control switch. The input terminal of the first inverter of the second circuit module is connected to the charging enable signal. The second connection point of the second circuit module is connected to the drain of the fourth NMOS transistor. The drain and the gate of the fourth NMOS transistor are connected. The source of the fourth NMOS transistor is connected to the drain of the fifth NMOS transistor. The drain and the gate of the fifth NMOS transistor are connected. The source of the fifth NMOS transistor is connected to the battery side voltage. The drain of the fourth NMOS transistor is connected to the first end of the second resistor and to the gate of the sixth NMOS transistor. The second end of the second resistor is connected to the battery side voltage. The source of the sixth NMOS transistor is connected to the battery side voltage. The drain of the sixth NMOS transistor is connected to the drain of the third PMOS transistor of the first circuit module.

[0022] For a driving device according to at least one embodiment of the present disclosure, the driving unit includes a discharging driving unit, and the discharging driving unit includes two of the circuit modules, a third inverter, a seventh NMOS transistor, an eighth NMOS transistor, a ninth NMOS transistor, and a third resistor.

[0023] The first connection point of the first circuit module among the two circuit modules is connected to the charge pump voltage for the discharge control switch, the second connection point of the first circuit module is connected to the gate of the discharge control switch, the output terminal of the third inverter is connected to the input terminal of the first inverter of the first circuit module, and the input terminal of the third inverter is connected to the discharge enable signal.

[0024] The first connection point of the second circuit module among the two circuit modules is connected to the charge pump voltage for the discharge control switch, the input terminal of the first inverter of the second circuit module is connected to the discharge enable signal, the second connection point of the second circuit module is connected to the drain of the seventh NMOS transistor, the drain and the gate of the seventh NMOS transistor are connected, the source of the seventh NMOS transistor is connected to the drain of the eighth NMOS transistor, the drain and the gate of the eighth NMOS transistor are connected, the source of the eighth NMOS transistor is connected to the load / charger side voltage, the drain of the seventh NMOS transistor is connected to the first end of the third resistor and the gate of the ninth NMOS transistor, the second end of the third resistor 216 is connected to the load / charger side voltage, the source of the ninth NMOS transistor is connected to the load / charger side voltage, and the drain of the ninth NMOS transistor is connected to the drain of the third PMOS transistor of the first circuit module.

[0025] According to another aspect of the present disclosure, a drive management device is provided, which integrates the drive device as described in any one of the above.

[0026] The drive management device according to at least one embodiment of the present disclosure further includes a first oscillation unit and a second oscillation unit. The first oscillation unit generates an oscillation signal for the charge control signal, and the second oscillation unit generates an oscillation signal for the discharge control signal.

[0027] The drive management device according to at least one embodiment of the present disclosure further includes a pre-charge level conversion unit, and the pre-charge level conversion unit provides a pre-charge control signal so as to control the pre-charge control switch through the pre-charge control signal in the case of including a pre-charge control switch.

[0028] The drive management device according to at least one embodiment of the present disclosure further includes a pre-discharge level conversion unit, and the pre-discharge level conversion unit provides a pre-discharge control signal so as to control the pre-discharge control switch through the pre-discharge control signal in the case of including a pre-discharge control switch.

[0029] The drive management device according to at least one embodiment of the present disclosure further includes a load detection unit, and the load detection unit detects whether a load is connected to the battery pack.

[0030] The drive management device according to at least one embodiment of the present disclosure further includes a charger detection unit that detects whether a charger is connected to the battery pack.

[0031] The drive management device according to at least one embodiment of the present disclosure further includes a voltage dividing unit that is configured to detect the load / charger side voltage.

[0032] The drive management device according to at least one embodiment of the present disclosure, wherein the voltage dividing unit detects the load / charger side voltage through a resistor voltage dividing circuit.

[0033] The drive management device according to at least one embodiment of the present disclosure, wherein the voltage dividing unit further includes a voltage dividing detection control switch, and determines whether to detect the load / charger side voltage through the on and off terminals of the voltage dividing detection control switch.

[0034] The drive management device according to at least one embodiment of the present disclosure further includes a first voltage conversion unit that is configured to generate the first voltage.

[0035] The drive management device according to at least one embodiment of the present disclosure, wherein the first voltage is 12V.

[0036] The drive management device according to at least one embodiment of the present disclosure further includes a second voltage conversion unit that is configured to generate a second voltage.

[0037] The drive management device according to at least one embodiment of the present disclosure generates the second voltage based on the first voltage, and the second voltage is 1.8V, 3.3V or 5V. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are included in this specification and form a part of this specification.

[0039] Figure 1 The schematic diagram of a battery management system according to one embodiment of the present disclosure is shown.

[0040] Figure 2 The schematic diagram of a battery management system according to one embodiment of the present disclosure is shown.

[0041] Figure 3 The schematic diagram of a battery management system according to one embodiment of the present disclosure is shown.

[0042] Figure 4Shows a schematic diagram of a battery management system according to an embodiment of the present disclosure.

[0043] Figure 5 Shows a schematic diagram of a battery management system according to an embodiment of the present disclosure.

[0044] Figure 6 Shows a schematic diagram of a charge pump for charging according to an embodiment of the present disclosure.

[0045] Figure 7 Shows a schematic diagram of a charge pump for discharging according to an embodiment of the present disclosure.

[0046] Figure 8 Shows a schematic diagram of a drive unit according to an embodiment of the present disclosure.

[0047] Figure 9 Shows a schematic diagram of a drive unit according to an embodiment of the present disclosure.

[0048] Figure 10 Shows a schematic diagram of a drive management device according to an embodiment of the present disclosure. Detailed Embodiments

[0049] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the convenience of description, only the parts related to the present disclosure are shown in the drawings.

[0050] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

[0051] Unless otherwise specified, the exemplary embodiments / Examples shown will be understood to provide exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, without departing from the technical concept of the present disclosure, the features of various embodiments / Examples can be additionally combined, separated, interchanged, and / or rearranged.

[0052] In the drawings, the use of hatching and / or shading is generally used to make the boundaries between adjacent components clear. Thus, unless otherwise stated, the presence or absence of hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonality between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of components may be exaggerated. When exemplary embodiments can be implemented differently, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference numerals denote the same components.

[0053] When a component is referred to as being "on" or "above" another component, "connected to" or "coupled to" another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there may be intervening components. However, when a component is referred to as being "directly on" another component, "directly connected to" or "directly coupled to" another component, there are no intervening components. For this reason, the term "connected" can refer to physical connection, electrical connection, etc., and can have or not have intervening components.

[0054] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "upper", "on", "over", "higher", and "side (e.g., as in "sidewall")" to describe the relationship of one component to another (other) component as shown in the drawings. In addition to the orientation depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacturing. For example, if the device in the drawing is flipped, a component described as being "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. In addition, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted.

[0055] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are also intended to include the plural forms. In addition, when the terms "comprise" and / or "include" and their variants are used in this specification, it is stated that there are the stated features, integers, steps, operations, components, assemblies and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms and not as terms of degree, so they are used to explain the inherent deviations of measured, calculated and / or provided values that would be recognized by a person of ordinary skill in the art.

[0056] According to an embodiment of the present disclosure, a driving device for a charging control switch and a discharging control switch is provided.

[0057] Figure 1 A schematic diagram of a battery management system according to an embodiment of the present disclosure is shown. As Figure 1 shown, the charging control switch 10 and the discharging control switch 20 are connected in series between the positive terminal B+ of the battery pack 30 and the positive terminal P+ of the charger / load. Among them, the charging control switch 10 and the discharging control switch 20 are NMOS transistors. The source S of the charging control switch 10 is connected to the positive terminal B+ of the battery pack 30, and the drain D of the charging control switch 10 is connected to the drain D of the discharging control switch 20. The source S of the discharging control switch 20 is connected to the positive terminal P+ of the charger / load. The gates G of the charging control switch 10 and the discharging control switch 20 are respectively connected to the driving device 40, and the driving device 40 provides a charging control signal and a discharging control signal to control the conduction and disconnection of the charging control switch 10 and the discharging control switch 20. The negative terminal P- of the charger / load is connected to the negative terminal B- of the battery pack 30.

[0058] As Figure 1 shown, the battery management system may further include a charge pump 50, where the charge pump 50 and the driving device 40 may be separate integrated devices, or the two may be integrated together. Through the charge pump 50, the voltage control signal provided by the driving device 40 to the charging control switch 10 is the positive terminal voltage of the battery pack 30 plus a first voltage, and the voltage value of the first voltage may be, for example, 12V. The voltage control signal provided by the driving device 40 to the discharging control switch 20 is the positive terminal voltage VP+ of the charger / load plus the first voltage, and the voltage value of the first voltage may be, for example, 12V.

[0059] The control unit 60 can provide a control signal to the driving device 40, and the driving device 40 generates a charging control signal and a discharging control signal according to the control signal provided by the control unit 60.

[0060] Figure 2 FIG. shows a schematic diagram of a battery management system according to an embodiment of the present disclosure. Figure 2 The embodiment shown in Figure 1 differs from the embodiment shown in Figure 1 in that, in Figure 2 the charging control switch 10 and the discharging control switch 20 are connected in series and formed in the same current path, while in

[0061] as Figure 2 shown, the source S of the charging control switch 10 is connected to the positive terminal B+ of the battery pack 30, and the source S of the discharging control switch 20 is connected to the positive terminal B+ of the battery pack 30. The drain D of the charging control switch 10 is connected to the positive terminal C+ of the load, and the drain D of the discharging control switch 20 is connected to the positive terminal D+ of the charger. Thus, in Figure 2 a separate charging path and a separate discharging path can be formed. The charging and discharging of the battery pack 30 are controlled by separately controlling the charging control switch 10 and the discharging control switch 20.

[0062] Figure 3 FIG. shows a schematic diagram of a battery management system according to an embodiment of the present disclosure. Figure 3 The embodiment shown in Figure 1 differs from the embodiment shown in Figure 1 in that, in Figure 3 the number of the charging control switch 10 and the discharging control switch 20 is one respectively, while in

[0063] as Figure 3 shown, two or more charging control switches 10 are connected in parallel to form a charging control switch, and each of the parallel charging control switches 10 receives the control signal of the driving device 40 to conduct or disconnect. Two or more discharging control switches 20 are connected in parallel to form a charging control switch, and each of the parallel discharging control switches 20 receives the control signal of the driving device 40 to conduct or disconnect. In this way, the on-resistance of the charging control switch and the discharging control switch can be effectively reduced, thereby avoiding power loss.

[0064] In addition, in the present disclosure, preferably, for the discharge control switch only, a manner in which two or more discharge control switches 20 are connected in parallel is adopted, while for the charge control switch, only one charge control switch 10 is adopted.

[0065] In addition, reference may be made to Figure 3 the settings of the charge control switch and the discharge control switch in Figure 2 to make changes to the Figure 2 embodiment. For example, the charge control switch and the discharge control switch of

[0066] Figure 4 are respectively set in a form in which a plurality of charge control switches and discharge control switches are connected in parallel, or the discharge control switch is set in a form in which a plurality of discharge control switches are connected in parallel. Figure 4 The embodiment of Figure 1 differs from the embodiment of Figure 4 in that the embodiment of

[0067] includes a pre-charge control switch 70.

[0068] Those skilled in the art should understand that Figure 4 the pre-charge control switch 70 shown in Figure 2 and Figure 3 can also be set in the embodiments shown in

[0069] Figure 5 The principle is the same and will not be elaborated here. Figure 5 The embodiment of Figure 1 differs from the embodiment of Figure 5 in that the embodiment of

[0070] The pre-discharge control switch 80 is an NMOS transistor, and the drain D of the pre-discharge control switch 80 is connected to the drain of the discharge control switch 20. The source S of the pre-discharge control switch 80 is connected to the positive terminal P+ of the load, and the gate G of the pre-discharge control switch 80 receives a pre-discharge control signal from the driving device 40. In addition, the pre-discharge control switch 80 can be a PMOS transistor, and the source S of the pre-discharge control switch 80 is connected to the drain of the discharge control switch 20. The drain D of the pre-discharge control switch 80 is connected to the positive terminal P+ of the load, and the gate G of the pre-discharge control switch 80 receives a pre-discharge control signal from the driving device 40. In this way, during the pre-discharge process, the conduction and disconnection of the pre-discharge control switch 80 are controlled by the pre-discharge control signal provided by the driving device 40, thereby realizing the pre-discharge control of the battery management system. In addition, a resistor can be connected in series between the positive terminal P+ of the load and the pre-discharge control switch 80.

[0071] Those skilled in the art should understand that Figure 5 the pre-discharge control switch 80 shown can also be arranged in Figures 2 to 4 embodiments such as those shown, with the same principle and will not be elaborated here.

[0072] Figure 6 Fig. shows a first charge pump unit 300 for controlling a charging control switch according to an embodiment of the present disclosure.

[0073] As Figure 6 shown, the first charge pump unit 300 can include a circuit module, and the circuit module can include a first PMOS transistor 301, a second PMOS transistor 302, a first resistor 303, a third PMOS transistor 304, a first NMOS transistor 305, and a first inverter 306.

[0074] The source of the first PMOS transistor 301, the first end of the first resistor 303, and the source of the third PMOS transistor 304 are connected, and the connection point forms a first connection point. The drain and gate of the first PMOS transistor 301 are connected, and the drain of the first PMOS transistor 301 is connected to the source of the second PMOS transistor 302. The drain and gate of the second PMOS transistor 302 are connected, and the drain of the second PMOS transistor 302 is connected to the drain of the first NMOS transistor 305. The source of the first NMOS transistor 305 is grounded. The drain of the second PMOS transistor 302 is connected to the other end of the first resistor 303 and the gate of the third PMOS transistor 304. The gate of the first NMOS transistor 305 is connected to the output terminal of the first inverter 306. The drain of the third PMOS transistor 304 serves as a second connection point.

[0075] The input terminal of the first inverter 306 is connected to a pulse signal (generated by an oscillator). The pulse signal is also connected to the gate of the second NMOS transistor 307. The source of the second NMOS transistor 307 is grounded, and the drain of the second NMOS transistor 307 is connected to the drain of the third PMOS transistor 304 to form a second connection point.

[0076] The above-mentioned first connection point can be connected to the positive terminal voltage VB+ of the battery pack, and the second connection point can be connected to one end of the first capacitor 310. The other end of the first capacitor 310 is connected to the cathode of the first diode 308. The anode of the first diode 308 is connected to the above-mentioned first voltage. The cathode of the first diode 308 is also connected to the anode of the second diode 309. The cathode of the second diode 309 is connected to one end of the second capacitor 311. The other end of the second capacitor 311 is connected to the positive terminal voltage VB+ of the battery pack. The connection point between the cathode of the second diode 309 and one end of the second capacitor 311 is used as the output terminal of the charge pump voltage VCP1 for the charging control switch.

[0077] Figure 7 A second charge pump unit 400 for discharge control switch control according to an embodiment of the present disclosure is shown.

[0078] As Figure 7 shown, the second charge pump unit 400 may include a circuit module, and the circuit module may include a first PMOS transistor 401, a second PMOS transistor 402, a first resistor 403, a third PMOS transistor 404, a first NMOS transistor 405, and a first inverter 406.

[0079] The source of the first PMOS transistor 401, the first end of the first resistor 403, and the source of the third PMOS transistor 404 are connected, and the connection point forms a first connection point. The drain and the gate of the first PMOS transistor 401 are connected, and the drain of the first PMOS transistor 401 is connected to the source of the second PMOS transistor 402. The drain and the gate of the second PMOS transistor 402 are connected. The drain of the second PMOS transistor 402 is connected to the drain of the first NMOS transistor 405, and the source of the first NMOS transistor 405 is grounded. The drain of the second PMOS transistor 402 is connected to the other end of the first resistor 403 and the gate of the third PMOS transistor 404. The gate of the first NMOS transistor 405 is connected to the output terminal of the first inverter 406. The drain of the third PMOS transistor 404 serves as a second connection point.

[0080] The input terminal of the first inverter 406 is connected to a pulse signal (generated by an oscillator). And the pulse signal is also connected to the gate of the third NMOS transistor 407. The source of the third NMOS transistor 407 is grounded, and the drain of the third NMOS transistor 407 is connected to the drain of the third PMOS transistor 404 to form a second connection point.

[0081] The above-mentioned first connection point can be connected to the positive terminal voltage VP+ of the load / charger, and the second connection point can be connected to one end of the third capacitor 410. The other end of the third capacitor 410 is connected to the cathode of the third diode 408. The anode of the third diode 408 is connected to the above-mentioned first voltage. The cathode of the third diode 408 is also connected to the anode of the fourth diode 409. And the cathode of the fourth diode 409 is connected to one end of the fourth capacitor 411. The other end of the fourth capacitor 411 is connected to the positive terminal voltage VP+ of the load / charger. The connection point of the cathode of the fourth diode 409 and one end of the fourth capacitor 411 is used as the output terminal of the charge pump voltage VCP2 for the discharge control switch.

[0082] Figure 8 A circuit diagram of a driving device according to an embodiment of the present disclosure is shown. Among them, in Figure 8 the charging driving unit 100 of the charging control switch 10 and the discharging driving unit 200 of the discharging control switch 20 in the driving device are respectively shown. Among them, in this embodiment, the charging control switch 10 and the discharging control switch 20 are connected in series in the same current path, and by controlling the two simultaneously, the charging and discharging of the battery pack are respectively controlled.

[0083] The driving unit 100 will be described in detail below.

[0084] The charging driving unit 100 may include two of the above-mentioned circuit modules.

[0085] The first circuit module in the two circuit modules may include a first PMOS transistor 101, a second PMOS transistor 102, a first resistor 103, a third PMOS transistor 104, a first NMOS transistor 105, and a first inverter 106.

[0086] The source of the first PMOS transistor 101, the first end of the first resistor 103, and the source of the third PMOS transistor 104 are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor 101 is connected to the gate, and the drain of the first PMOS transistor 101 is connected to the source of the second PMOS transistor 102. The drain of the second PMOS transistor 102 is connected to the gate, and the drain of the second PMOS transistor 102 is connected to the drain of the first NMOS transistor 105. The source of the first NMOS transistor 105 is grounded. The drain of the second PMOS transistor 102 is connected to the other end of the first resistor 103 and the gate of the third PMOS transistor 104. The gate of the first NMOS transistor 105 is connected to the output terminal of the first inverter 106. The drain of the third PMOS transistor 104 serves as a second connection point. Among them, the first connection point of the first circuit module is connected to the charge pump voltage VCP1 for the charge control switch of the first charge pump circuit 300. The second connection point of the first circuit module is connected to the gate of the charge control switch 30.

[0087] The output terminal of the second inverter 107 is connected to the input terminal of the first inverter 106 of the first circuit module, and the second inverter 107 is connected to the charge enable signal CHG_EN to control the charge switch 10 according to the charge enable signal.

[0088] The second circuit module in the two circuit modules may include a first PMOS transistor 108, a second PMOS transistor 111, a first resistor 109, a third PMOS transistor 110, a first NMOS transistor 112, and a first inverter 113.

[0089] The source of the first PMOS transistor 108, the first end of the first resistor 109, and the source of the third PMOS transistor 110 are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor 108 is connected to the gate, and the drain of the first PMOS transistor 108 is connected to the source of the second PMOS transistor 111. The drain of the second PMOS transistor 111 is connected to the gate, and the drain of the second PMOS transistor 111 is connected to the drain of the first NMOS transistor 112. The source of the first NMOS transistor 112 is grounded. The drain of the second PMOS transistor 111 is connected to the other end of the first resistor 109 and the gate of the third PMOS transistor 110. The gate of the first NMOS transistor 112 is connected to the output terminal of the first inverter 113, and the input terminal of the first inverter 113 is connected to the charge enable signal CHG_EN. The drain of the third PMOS transistor 110 serves as a second connection point.

[0090] Among them, the first connection point of the second circuit module is connected to the charge pump voltage VCP1 for the charge control switch of the first charge pump circuit 300.

[0091] The second connection point of the second circuit module is connected to the drain of the fourth NMOS transistor 114. The drain of the fourth NMOS transistor 114 is connected to its gate. The source of the fourth NMOS transistor 114 is connected to the drain of the fifth NMOS transistor 115. The drain of the fifth NMOS transistor 115 is connected to its gate. The source of the fifth NMOS transistor 115 is connected to the positive terminal voltage VB+ of the battery pack. The drain of the fourth NMOS transistor 114 is connected to the first end of the second resistor 116 and to the gate of the sixth NMOS transistor 117. The second end of the second resistor 116 is connected to the positive terminal voltage VB+ of the battery pack. The source of the sixth NMOS transistor 117 is connected to the positive terminal voltage VB+ of the battery pack. The drain of the sixth NMOS transistor 117 is connected to the drain of the third PMOS transistor 104 of the first circuit module.

[0092] The discharge driving unit 200 will be described in detail below.

[0093] The discharge driving unit 100 may include two of the above-mentioned circuit modules.

[0094] The first circuit module of the two circuit modules may include a first PMOS transistor 201, a second PMOS transistor 202, a first resistor 203, a third PMOS transistor 204, a first NMOS transistor 205, and a first inverter 206.

[0095] The source of the first PMOS transistor 201, the first end of the first resistor 203, and the source of the third PMOS transistor 204 are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor 201 is connected to its gate, and the drain of the first PMOS transistor 201 is connected to the source of the second PMOS transistor 202. The drain of the second PMOS transistor 202 is connected to its gate. The drain of the second PMOS transistor 202 is connected to the drain of the first NMOS transistor 205. The source of the first NMOS transistor 205 is grounded. The drain of the second PMOS transistor 202 is connected to the other end of the first resistor 203 and to the gate of the third PMOS transistor 204. The gate of the first NMOS transistor 205 is connected to the output terminal of the first inverter 206. The drain of the third PMOS transistor 204 serves as a second connection point. Among them, the first connection point of the first circuit module is connected to the charge pump voltage VCP2 for the charge control switch of the second charge pump circuit 400. The second connection point of the first circuit module is connected to the gate of the discharge control switch 40.

[0096] The output terminal of the third inverter 207 is connected to the input terminal of the first inverter 206 of the first circuit module, and the input terminal of the third inverter 207 is connected to the discharge enable signal DSG_EN, so as to discharge the control switch 10 according to the discharge enable signal.

[0097] The second circuit module in the two circuit modules may include a first PMOS transistor 208, a second PMOS transistor 211, a first resistor 209, a third PMOS transistor 210, a first NMOS transistor 212, and a first inverter 213.

[0098] The source of the first PMOS transistor 208, the first end of the first resistor 209, and the source of the third PMOS transistor 210 are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor 208 is connected to its gate, and the drain of the first PMOS transistor 208 is connected to the source of the second PMOS transistor 211. The drain of the second PMOS transistor 211 is connected to its gate, and the drain of the second PMOS transistor 211 is connected to the drain of the first NMOS transistor 212. The source of the first NMOS transistor 212 is grounded. The drain of the second PMOS transistor 211 is connected to the other end of the first resistor 209 and the gate of the third PMOS transistor 210. The gate of the first NMOS transistor 212 is connected to the output terminal of the first inverter 213, and the input terminal of the first inverter 213 is connected to the discharge enable signal DSG_EN. The drain of the third PMOS transistor 210 serves as a second connection point.

[0099] Among them, the first connection point of the second circuit module is connected to the charge pump voltage VCP2 for the discharge control switch of the second charge pump circuit 400.

[0100] The second connection point of the second circuit module is connected to the drain of a seventh NMOS transistor 214. The drain of the seventh NMOS transistor 214 is connected to its gate. The source of the seventh NMOS transistor 214 is connected to the drain of an eighth NMOS transistor 215. The drain of the eighth NMOS transistor 215 is connected to its gate. The source of the eighth NMOS transistor 215 is connected to the positive terminal voltage VP+ of the load / charger. The drain of the seventh NMOS transistor 214 is connected to the first end of a third resistor 216 and the gate of a ninth NMOS transistor 217. The second end of the third resistor 216 is connected to the positive terminal voltage VP+ of the load / charger. The source of the ninth NMOS transistor 217 is connected to the positive terminal voltage VP+ of the load / charger, and the drain of the ninth NMOS transistor 217 is connected to the drain of the third PMOS transistor 204 of the first circuit module.

[0101] Figure 9 A circuit diagram of a driving device according to an embodiment of the present disclosure is shown. Among them, in Figure 9The charging drive unit 100 of the charging control switch 10 and the discharging drive unit 200 of the discharging control switch 20 in the driving device are respectively shown. Among them, in this embodiment, the charging control switch 10 and the discharging control switch 20 are connected in series in different current paths, and by respectively controlling the two, the charging and discharging of the battery pack are respectively controlled.

[0102] The drive unit 100 will be described in detail below.

[0103] The charging drive unit 100 may include two of the above-mentioned circuit modules.

[0104] The first circuit module of the two circuit modules may include a first PMOS transistor 101, a second PMOS transistor 102, a first resistor 103, a third PMOS transistor 104, a first NMOS transistor 105, and a first inverter 106.

[0105] The source of the first PMOS transistor 101, the first end of the first resistor 103, and the source of the third PMOS transistor 104 are connected, and the connection point constitutes a first connection point. The drain of the first PMOS transistor 101 is connected to the gate, and the drain of the first PMOS transistor 101 is connected to the source of the second PMOS transistor 102. The drain of the second PMOS transistor 102 is connected to the gate, the drain of the second PMOS transistor 102 is connected to the drain of the first NMOS transistor 105, and the source of the first NMOS transistor 105 is grounded. The drain of the second PMOS transistor 102 is connected to the other end of the first resistor 103 and the gate of the third PMOS transistor 104. The gate of the first NMOS transistor 105 is connected to the output terminal of the first inverter 106. The drain of the third PMOS transistor 104 serves as a second connection point. Among them, the first connection point of the first circuit module is connected to the charge pump voltage VCP1 for the charging control switch of the first charge pump circuit 300. The second connection point of the first circuit module is connected to the gate of the charging control switch 30.

[0106] The output terminal of the second inverter 107 is connected to the input terminal of the first inverter 106 of the first circuit module, and the second inverter 107 is connected to the charge enable signal CHG_EN to control the charging control switch 10 according to the charge enable signal.

[0107] The second circuit module of the two circuit modules may include a first PMOS transistor 108, a second PMOS transistor 111, a first resistor 109, a third PMOS transistor 110, a first NMOS transistor 112, and a first inverter 113.

[0108] The source of the first PMOS transistor 108, the first end of the first resistor 109, and the source of the third PMOS transistor 110 are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor 108 is connected to its gate, and the drain of the first PMOS transistor 108 is connected to the source of the second PMOS transistor 111. The drain of the second PMOS transistor 111 is connected to its gate, and the drain of the second PMOS transistor 111 is connected to the drain of the first NMOS transistor 112. The source of the first NMOS transistor 112 is grounded. The drain of the second PMOS transistor 111 is connected to the other end of the first resistor 109 and the gate of the third PMOS transistor 110. The gate of the first NMOS transistor 112 is connected to the output terminal of the first inverter 113, and the input terminal of the first inverter 113 is connected to the charge enable signal CHG_EN. The drain of the third PMOS transistor 110 serves as a second connection point.

[0109] Among them, the first connection point of the second circuit module is connected to the charge pump voltage VCP1 for the charge control switch of the first charge pump circuit 300.

[0110] The second connection point of the second circuit module is connected to the drain of the fourth NMOS transistor 114. The drain of the fourth NMOS transistor 114 is connected to its gate. The source of the fourth NMOS transistor 114 is connected to the drain of the fifth NMOS transistor 115. The drain of the fifth NMOS transistor 115 is connected to its gate. The source of the fifth NMOS transistor 115 is connected to the positive terminal voltage VB+ of the battery pack. The drain of the fourth NMOS transistor 114 is connected to the first end of the second resistor 116 and the gate of the sixth NMOS transistor 117. The second end of the second resistor 116 is connected to the positive terminal voltage VB+ of the battery pack. The source of the sixth NMOS transistor 117 is connected to the positive terminal voltage VB+ of the battery pack. The drain of the sixth NMOS transistor 117 is connected to the drain of the third PMOS transistor 104 of the first circuit module.

[0111] The discharge driving unit 200 will be described in detail below.

[0112] The discharge driving unit 100 may include two such circuit modules.

[0113] The first circuit module in the two circuit modules may include a first PMOS transistor 201, a second PMOS transistor 202, a first resistor 203, a third PMOS transistor 204, a first NMOS transistor 205, and a first inverter 206.

[0114] The source of the first PMOS transistor 201, the first end of the first resistor 203, and the source of the third PMOS transistor 204 are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor 201 is connected to its gate, and the drain of the first PMOS transistor 201 is connected to the source of the second PMOS transistor 202. The drain of the second PMOS transistor 202 is connected to its gate, and the drain of the second PMOS transistor 202 is connected to the drain of the first NMOS transistor 205. The source of the first NMOS transistor 205 is grounded. The drain of the second PMOS transistor 202 is connected to the other end of the first resistor 203 and the gate of the third PMOS transistor 204. The gate of the first NMOS transistor 205 is connected to the output terminal of the first inverter 206. The drain of the third PMOS transistor 204 serves as a second connection point. Among them, the first connection point of the first circuit module is connected to the charge pump voltage VCP2 for the charge control switch of the second charge pump circuit 400. The second connection point of the first circuit module is connected to the gate of the discharge control switch 40.

[0115] The output terminal of the third inverter 207 is connected to the input terminal of the first inverter 206 of the first circuit module, and the input terminal of the third inverter 207 is connected to the discharge enable signal DSG_EN, so as to discharge the control switch 10 according to the discharge enable signal.

[0116] The second circuit module in the two circuit modules may include a first PMOS transistor 208, a second PMOS transistor 211, a first resistor 209, a third PMOS transistor 210, a first NMOS transistor 212, and a first inverter 213.

[0117] The source of the first PMOS transistor 208, the first end of the first resistor 209, and the source of the third PMOS transistor 210 are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor 208 is connected to its gate, and the drain of the first PMOS transistor 208 is connected to the source of the second PMOS transistor 211. The drain of the second PMOS transistor 211 is connected to its gate, and the drain of the second PMOS transistor 211 is connected to the drain of the first NMOS transistor 212. The source of the first NMOS transistor 212 is grounded. The drain of the second PMOS transistor 211 is connected to the other end of the first resistor 209 and the gate of the third PMOS transistor 210. The gate of the first NMOS transistor 212 is connected to the output terminal of the first inverter 213, and the input terminal of the first inverter 213 is connected to the discharge enable signal DSG_EN. The drain of the third PMOS transistor 210 serves as a second connection point.

[0118] Among them, the first connection point of the second circuit module is connected to the charge pump voltage VCP2 for the discharge control switch of the second charge pump circuit 400.

[0119] The second connection point of the second circuit module is connected to the drain of the seventh NMOS transistor 214. The drain of the seventh NMOS transistor 214 is connected to its gate. The source of the seventh NMOS transistor 214 is connected to the drain of the eighth NMOS transistor 215. The drain of the eighth NMOS transistor 215 is connected to its gate. The source of the eighth NMOS transistor 215 is connected to the positive terminal voltage VP+ of the load / charger. The drain of the seventh NMOS transistor 214 is connected to the first end of the third resistor 216 and to the gate of the ninth NMOS transistor 217. The second end of the third resistor 216 is connected to the positive terminal voltage VP+ of the load / charger. The source of the ninth NMOS transistor 217 is connected to the positive terminal voltage VP+ of the load / charger. The drain of the ninth NMOS transistor 217 is connected to the drain of the third PMOS transistor 204 of the first circuit module.

[0120] According to a further embodiment of the present disclosure, a drive management device is also provided. As Figure 10 shown. The device integrates a charge drive unit and a discharge drive unit (corresponding to the charge drive unit 100 and the discharge drive unit 200 mentioned above), a first charge pump unit and a second charge pump unit (corresponding to the charge pump 300 and the charge pump 400 mentioned above).

[0121] The charge drive unit outputs a charge control signal to the charge control switch through pin 1. And receives a charge enable signal through pin 2. The discharge drive unit outputs a discharge control signal to the discharge control switch through pin 3. And receives a discharge enable signal through pin 4.

[0122] The first charge pump unit receives a charge pump enable signal through pin 5, provides a charge pump voltage VCP1 through pin 6, and is connected to external capacitors (capacitors 310 and 311) through pins 7 and 8.

[0123] The second charge pump unit receives a charge pump enable signal through pin 9 (pin 9 and pin 5 can be the same pin), provides a charge pump voltage VCP2 through pin 10, and is connected to external capacitors (capacitors 410 and 411) through pins 11 and 12.

[0124] The drive management device may further include a first oscillation unit and a second oscillation unit. The first oscillation unit generates an oscillation signal based on the positive terminal voltage VB+ of the battery pack, as the pulse signal provided to the input terminal of the first inverter 306 mentioned above. The second oscillation unit generates an oscillation signal based on the positive terminal voltage VP+ of the load / charger, as the pulse signal provided to the input terminal of the first inverter 406 mentioned above.

[0125] The drive management device may further include a pre-charge level conversion unit. The pre-charge level conversion unit may receive a pre-charge enable signal through pin 13 to perform a pre-charge operation. And a pre-charge control signal may be provided through pin 14. The pre-charge control signal is provided to the pre-charge control switch 70 to achieve the management of pre-charging. The pre-charge level conversion unit may generate a pre-charge control signal based on the charge pump voltage VCP1 and the voltage VB+ at the positive terminal of the battery pack.

[0126] The drive management device may further include a pre-discharge level conversion unit. The pre-discharge level conversion unit may receive a pre-discharge enable signal through pin 15 to perform a pre-discharge operation. And a pre-discharge control signal may be provided through pin 16. The pre-discharge control signal is provided to the pre-discharge control switch 80 to achieve the management of pre-discharge. The pre-discharge level conversion unit may generate a pre-discharge control signal based on the charge pump voltage VCP2 and the voltage VP+ at the positive terminal of the load / charger.

[0127] The drive management device may further include a load detection unit. The load detection unit is used to detect whether a load is connected based on the voltage VB+ at the positive terminal of the battery pack and the voltage VP+ at the positive terminal of the load / charger. The load detection unit provides a load detection signal through pin 17.

[0128] The drive management device may further include a charger detection unit. The charger detection unit is used to detect whether a charger is connected based on the voltage VB+ at the positive terminal of the battery pack and the voltage VP+ at the positive terminal of the load / charger. The charger detection unit provides a charger detection signal through pin 18.

[0129] The drive management device may further include a voltage division unit. The voltage division unit is used to detect the voltage VP+ at the positive terminal of the load / charger. The voltage VP+ may be detected in the form of a voltage division circuit (such as a voltage division resistor) to convert the high voltage of the voltage VP+ into a low voltage. The detected voltage may be provided to the control unit. The voltage division resistor may be integrated in the drive management device or may be set outside it. The voltage division unit provides a detected voltage through pin 19. The voltage division unit is also connected to a voltage division detection enable signal through pin 20. The voltage division detection enable signal controls whether the voltage division unit performs voltage division detection. The enable signal may be used to control a switch inside the drive management device. When the switch is turned on, voltage division detection is performed, and when the switch is turned off, voltage division detection is not performed.

[0130] The drive management device may further include a first voltage conversion unit configured to generate the above-mentioned first voltage (e.g., 12V). The first voltage conversion unit may generate the above-mentioned first voltage based on the voltage VB+ at the positive terminal of the battery pack. And this first voltage is provided to the first charge pump unit and the second charge pump unit. Additionally, this first voltage may also be provided to the outside of the device through pin 21 for use by other components.

[0131] The drive management device may further include a second voltage conversion unit configured to generate a second voltage (e.g., 5V). The second voltage conversion unit may generate the above-mentioned second voltage based on the voltage VB+ at the positive terminal of the battery pack, or may generate the second voltage based on the first voltage of the first voltage conversion unit. This second voltage may be provided to the first oscillation unit, the second oscillation unit, the charging drive unit, the discharging drive unit, the pre-charging level conversion unit, the pre-discharging level conversion unit, etc. Additionally, this second voltage may also be provided to the outside of the device through pin 22 for use by other components.

[0132] The drive management device may further include a VB+ pin, a VP+ pin, a GND pin, etc.

[0133] According to the drive device of the present disclosure, the charging control switch and the discharging control switch provided between the positive terminal of the battery pack and the positive terminal of the load / charger can be effectively and stably controlled, and low power consumption, etc. can be achieved. Moreover, the charge and discharge switches achieve independent control, can withstand high voltages, and a common or independent charge and discharge path can be adopted.

[0134] The battery pack of the present disclosure may be a lithium battery pack and can be used in various scenarios using rechargeable batteries such as electric vehicles, electric bicycles, electric motorcycles, portable tools, backup batteries, etc.

[0135] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with that embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0136] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0137] Those skilled in the art should understand that the above-described embodiments are merely for clearly illustrating the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A drive management device, characterized in that, Integrated with a driving device, the driving device provides a charging control signal and a discharging control signal for a charging control switch and a discharging control switch respectively to control the charging and discharging of the battery pack. The charging control switch and the discharging control switch are NMOS transistors and are connected between the positive terminal of the battery pack and the positive terminal of the load / charger, including: A driving unit that provides a charging control signal higher than the battery-side voltage of the positive terminal of the battery pack by a first voltage to the gate of the charging control switch, and the driving unit provides a discharging control signal higher than the load / charger-side voltage of the positive terminal of the load / charger by a first voltage to the gate of the discharging control switch; a first charge pump unit that generates a charge pump voltage for the charging control switch, which is the sum of the battery-side voltage and the first voltage, to be provided to the driving unit to generate the charging control signal; A second charge pump unit that generates a charge pump voltage for the discharging control switch, which is the sum of the load / charger-side voltage and the first voltage, to be provided to the driving unit to generate the discharging control signal, The first and second charge pump units are respectively connected to external capacitors through the pins of the driving management device, and each includes a circuit module. The circuit module includes a first, a second, and a third PMOS transistor, a first resistor, a first NMOS transistor, and a first inverter. The source of the first PMOS transistor, the first end of the first resistor, and the source of the third PMOS transistor are connected, and the connection point forms a first connection point. The drain of the first PMOS transistor is connected to its gate and is connected to the source of the second PMOS transistor. The drain of the second PMOS transistor is connected to its gate and is connected to the drain of the first NMOS transistor. The source of the first NMOS transistor is grounded. The drain of the second PMOS transistor is connected to the other end of the first resistor and the gate of the third PMOS transistor. The gate of the first NMOS transistor is connected to the output terminal of the first inverter. The drain of the third PMOS transistor serves as a second connection point, and the input terminal of the first inverter is connected to a pulse signal.

2. The drive management device according to claim 1, characterized in that, The source of the charging control switch is connected to the positive terminal of the battery pack, and the drain of the charging control switch is connected to the drain of the discharging control switch. The source of the discharging control switch is connected to the positive terminal of the charger / load. The gates of the charging control switch and the discharging control switch are respectively connected to the driving unit, and the driving unit provides the charging control signal and the discharging control signal to control the conduction and disconnection of the charging control switch and the discharging control switch.

3. The drive management device according to claim 1, characterized in that, The source of the charging control switch is connected to the positive terminal of the battery pack, and the source of the discharging control switch is connected to the positive terminal of the battery pack. The drain of the charging control switch is connected to the positive terminal of the load, and the drain of the discharging control switch is connected to the positive terminal of the charger. The gates of the charging control switch and the discharging control switch are respectively connected to the driving unit, and the driving unit provides the charging control signal and the discharging control signal to control the conduction and disconnection of the charging control switch and the discharging control switch.

4. The drive management device according to claim 1, characterized in that, The charging control switch is a charging control switch formed by parallel connection of two or more NMOS transistors, and / or the discharging control switch is a discharging control switch formed by parallel connection of two or more NMOS transistors.

5. The drive management device according to claim 1, characterized in that, The driving device further includes a pre-charging control switch. The pre-charging control switch is a PMOS transistor. The drain of the pre-charging control switch is connected to the positive terminal of the battery pack. The source of the pre-charging control switch is connected to the drain of the charging control switch. And the gate of the pre-charging control switch receives a pre-charging control signal from the driving unit; or the pre-charging control switch is an NMOS transistor. The source of the pre-charging control switch is connected to the positive terminal of the battery pack. The drain of the pre-charging control switch is connected to the drain of the charging control switch. And the gate of the pre-charging control switch receives a pre-charging control signal from the driving unit.

6. The drive management device according to claim 1, characterized in that, The driving device further includes a pre-discharging control switch. The pre-discharging control switch is an NMOS transistor. The drain of the pre-discharging control switch is connected to the drain of the discharging control switch. The source of the pre-discharging control switch is connected to the positive terminal of the load. And the gate of the pre-discharging control switch receives a pre-discharging control signal from the driving unit; or the pre-discharging control switch is a PMOS transistor. The source of the pre-discharging control switch is connected to the drain of the discharging control switch. The drain of the pre-discharging control switch is connected to the positive terminal of the load. And the gate of the pre-discharging control switch receives a pre-discharging control signal from the driving unit.

7. The drive management device according to claim 1, characterized in that, The first charge pump unit further includes a second NMOS transistor, a first diode and a second diode. The first connection point of the circuit module of the first charge pump unit is connected to the battery-side voltage, while the second connection point is connected to one end of a first capacitor. The other end of the first capacitor is connected to the cathode of the first diode. The anode of the first diode is connected to the first voltage. The cathode of the first diode is also connected to the anode of the second diode. The cathode of the second diode is connected to one end of a second capacitor. The other end of the second capacitor is connected to the battery-side voltage. The connection point of the cathode of the second diode and one end of the second capacitor serves as the output terminal of the charge pump voltage for the charging control switch. The pulse signal is also connected to the gate of the second NMOS transistor. The source of the second NMOS transistor is grounded.

8. The drive management device according to claim 1, characterized in that, The first charge pump unit further includes a third NMOS transistor, a third diode and a fourth diode. The first connection point of the circuit module of the second charge pump unit is connected to the load / charger side voltage, while the second connection point is connected to one end of a third capacitor. The other end of the third capacitor is connected to the cathode of a third diode. The anode of the third diode is connected to the first voltage. The cathode of the third diode is also connected to the anode of a fourth diode. The cathode of the fourth diode is connected to one end of a fourth capacitor. The other end of the fourth capacitor is connected to the load / charger side voltage. The connection point between the cathode of the fourth diode and one end of the fourth capacitor serves as the output terminal of the charge pump voltage for the discharge control switch. The pulse signal is also connected to the gate of the third NMOS transistor, and the source of the third NMOS transistor is grounded.

9. The drive management device according to claim 7, characterized in that, The driving unit includes a charging driving unit, and the charging driving unit includes two of the circuit modules, a second inverter, a fourth NMOS transistor, a fifth NMOS transistor, a sixth NMOS transistor, and a second resistor. The first connection point of the first circuit module among the two circuit modules is connected to the charge pump voltage for the charging control switch. The second connection point of the first circuit module is connected to the gate of the charging control switch. The output terminal of the second inverter is connected to the input terminal of the first inverter of the first circuit module, and the second inverter is connected to a charging enable signal. The first connection point of the second circuit module among the two circuit modules is connected to the charge pump voltage for the charging control switch. The input terminal of the first inverter of the second circuit module is connected to the charging enable signal. The second connection point of the second circuit module is connected to the drain of the fourth NMOS transistor. The drain and the gate of the fourth NMOS transistor are connected. The source of the fourth NMOS transistor is connected to the drain of the fifth NMOS transistor. The drain and the gate of the fifth NMOS transistor are connected. The source of the fifth NMOS transistor is connected to the battery side voltage. The drain of the fourth NMOS transistor is connected to the first end of the second resistor and to the gate of the sixth NMOS transistor. The second end of the second resistor is connected to the battery side voltage. The source of the sixth NMOS transistor is connected to the battery side voltage. The drain of the sixth NMOS transistor is connected to the drain of the third PMOS transistor of the first circuit module.

10. The drive management device according to claim 8, characterized in that, The driving unit includes a discharging driving unit, and the discharging driving unit includes two of the circuit modules, a third inverter, a seventh NMOS transistor, an eighth NMOS transistor, a ninth NMOS transistor, and a third resistor. The first connection point of the first circuit module among the two circuit modules is connected to the charge pump voltage for the discharge control switch. The second connection point of the first circuit module is connected to the gate of the discharge control switch. The output terminal of the third inverter is connected to the input terminal of the first inverter of the first circuit module, and the input terminal of the third inverter is connected to a discharging enable signal. The first connection point of the second circuit module among the two circuit modules is connected to the charge pump voltage for the discharge control switch. The input terminal of the first inverter of the second circuit module is connected to the discharge enable signal. The second connection point of the second circuit module is connected to the drain of the seventh NMOS transistor. The drain and the gate of the seventh NMOS transistor are connected. The source of the seventh NMOS transistor is connected to the drain of the eighth NMOS transistor. The drain and the gate of the eighth NMOS transistor are connected. The source of the eighth NMOS transistor is connected to the load / charger side voltage. The drain of the seventh NMOS transistor is connected to the first end of the third resistor and to the gate of the ninth NMOS transistor. The second end of the third resistor is connected to the load / charger side voltage. The source of the ninth NMOS transistor is connected to the load / charger side voltage. The drain of the ninth NMOS transistor is connected to the drain of the third PMOS transistor of the first circuit module.

11. The drive management device according to claim 1, characterized in that, It further includes a first oscillation unit and a second oscillation unit. The first oscillation unit generates an oscillation signal for the charge control signal. The second oscillation unit generates an oscillation signal for the discharge control signal.

12. The drive management device according to claim 1, characterized in that, It further includes a pre-charge level conversion unit. The pre-charge level conversion unit provides a pre-charge control signal so as to control the pre-charge control switch through the pre-charge control signal in the case where a pre-charge control switch is included.

13. The drive management device according to claim 1, characterized in that, It further includes a pre-discharge level conversion unit. The pre-discharge level conversion unit provides a pre-discharge control signal so as to control the pre-discharge control switch through the pre-discharge control signal in the case where a pre-discharge control switch is included.

14. The drive management device according to claim 1, characterized in that, It further includes a load detection unit. The load detection unit detects whether a load is connected to the battery pack.

15. The drive management device according to claim 1, characterized in that, It further includes a charger detection unit. The charger detection unit detects whether a charger is connected to the battery pack.

16. The drive management device according to claim 1, characterized in that, It further includes a voltage division unit. The voltage division unit is used to detect the load / charger side voltage.

17. The drive management device according to claim 16, characterized in that, The voltage division unit detects the load / charger side voltage through a resistor voltage division circuit.

18. The drive management device according to claim 17, characterized in that, The voltage division unit further includes a voltage division detection control switch and determines whether to detect the load / charger side voltage through the conduction and disconnection of the voltage division detection control switch.

19. The drive management device according to claim 1, characterized in that, It further includes a first voltage conversion unit. The first voltage conversion unit is used to generate the first voltage.

20. The drive management device according to claim 19, characterized in that, The first voltage is 12V.

21. The drive management device according to claim 1, characterized in that, It further includes a second voltage conversion unit. The second voltage conversion unit is used to generate a second voltage.

22. The drive management device according to claim 21, characterized in that, The second voltage is generated based on the first voltage, and the second voltage is 1.8V, 3.3V or 5V.

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