CN214280976U

CN214280976U - Chip with charger module, circuit board and motor control system

Info

Publication number: CN214280976U
Application number: CN202120100024.XU
Authority: CN
Inventors: 周号
Original assignee: Zhuhai Maiju Microelectronics Co Ltd
Current assignee: Zhuhai Maiju Microelectronics Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-24
Anticipated expiration: 2031-01-14

Abstract

The present disclosure provides a chip with a charger module, the chip being capable of managing a battery/battery pack, the chip comprising: a main charging switch controlled to charge the battery/cell stack; and a charger module connecting the external power source with the main charging switch so as to charge the battery/battery pack through the main charging switch by the external power source. The disclosure also provides a circuit board and a motor control system.

Description

Chip with charger module, circuit board and motor control system

Technical Field

The present disclosure relates to a chip, a circuit board and a motor control system having a charger module.

Background

A rechargeable battery and a motor are generally included in home electric appliances, electric tools, and the like, and the motor is supplied with electric current through the rechargeable battery to perform work.

However, in the prior art, each functional module is independent, for example, the charger module, the processing module (51MCU), the driving module, and the power conversion module all adopt a separate mode, which greatly increases the cost and requires later configuration.

Moreover, the number of switching elements (e.g., charge switch, discharge switch, load control switch) and the like used in the related art is too large, which also increases the corresponding cost, product area, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the present disclosure provides a chip with a charger module, a circuit board and a motor control system.

According to an aspect of the present disclosure, there is provided a chip having a charger module, the chip capable of managing a battery/battery pack, the chip comprising:

a main charging switch controlled to charge the battery/cell stack; and

a charger module connecting an external power source with the main charging switch to charge the battery/battery pack via the main charging switch by the external power source.

According to at least one embodiment of the present disclosure, the chip further includes: the battery management module is used for acquiring the measurement information of the battery/battery pack so as to manage the battery/battery pack.

According to at least one embodiment of the present disclosure, the battery management module includes an analog-to-digital conversion submodule for converting an analog signal collected from the outside of the chip into a digital signal.

According to at least one embodiment of the present disclosure, the number of the analog-to-digital conversion sub-modules is two.

According to at least one embodiment of the present disclosure, the chip further includes a voltage conversion module for providing voltages required by other modules in the chip.

According to at least one embodiment of the present disclosure, the chip further includes a processing module that provides a control signal that controls the external switch.

According to at least one embodiment of the present disclosure, the chip further includes a driving module, and the driving module receives the control signal provided by the processing module so as to control the external switch to be turned on or off.

According to at least one embodiment of the present disclosure, the processing module provides the control signal to the battery management module, and controls the external switch to be turned on and off by the battery management module.

According to at least one embodiment of the present disclosure, the external switch is a motor control switch for controlling a motor.

According to at least one embodiment of the present disclosure, the battery management module receives a current detection signal of a current flowing through the battery/battery pack and/or a voltage detection signal of the battery.

According to at least one embodiment of the present disclosure, the battery management module controls the on and off of a main charging switch and/or a discharging switch of the battery/battery pack.

According to another aspect of the present disclosure, a circuit board having a charging function includes:

a chip as described above; and

and the charging interface is connected with the chip and an external power supply so as to charge the battery/battery pack through the charger module and the main charging switch.

According to at least one embodiment of the present disclosure, the circuit board further includes a backup charging switch that is controlled to charge the battery/battery pack via the backup charging switch by an external power source when the main charging switch fails.

According to at least one embodiment of the present disclosure, the circuit board further includes a standby management chip, and when the standby charging switch needs to operate, the standby management chip controls the standby charging switch.

According to at least one embodiment of the present disclosure, the circuit board further includes a discharge switch, and the discharge switch is controlled by a battery management module included in the chip so as to control discharge of the battery/battery pack.

According to at least one embodiment of the present disclosure, the circuit board further includes an external load control switch, the external load control switch is driven by a driving module included in the chip, and a processing module included in the chip provides a control signal to the driving module.

According to at least one embodiment of the present disclosure, the discharge switch also functions as an external load control switch, the external load control switch is driven by a driving module included in the chip, and a processing module included in the chip provides a control signal to the driving module.

According to at least one embodiment of the present disclosure, the backup charging switch also functions as an external load control switch, the external load control switch is driven by a driving module included in the chip, and a processing module included in the chip provides a control signal to the driving module.

According to at least one embodiment of the present disclosure, the circuit board further includes a current detection module for detecting a current flowing through the battery/battery pack and providing the detected current value to the power management module.

According to at least one embodiment of the present disclosure, the charging interface is a USB charging interface.

According to at least one embodiment of the present disclosure, the external load controlled by the circuit board is a motor, the external load control switch is a motor control switch, and the driving module provides a pulse width modulation control signal to control the on/off of the motor control switch.

According to still another aspect of the present disclosure, a motor control system for controlling a motor includes:

a battery/battery pack that can be charged to store current or discharged to provide current; and

a circuit board as described above for controlling the charging and discharging of the battery/cell stack,

the battery/battery pack is charged by the circuit board via an external power source, or the motor is supplied with current by the circuit board through discharge of the battery/battery pack.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 shows a schematic diagram of a chip according to one embodiment of the present disclosure.

FIG. 2 shows a schematic diagram of a circuit board according to one embodiment of the present disclosure.

FIG. 3 shows a schematic diagram of a circuit board according to one embodiment of the present disclosure.

FIG. 4 shows a schematic diagram of a circuit board according to one embodiment of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "side wall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

The present disclosure provides a chip having a charger module, by which cost can be effectively reduced, and assembling difficulty is reduced, and an area of a corresponding product is reduced.

As shown in fig. 1, a chip 100 having a charger module capable of managing a battery/battery pack, the chip 100 includes: a charger module 110 and a main charging switch 120.

The main charging switch 120 is controlled to charge the battery/cell stack 20. The charger module 110 connects an external power source with the main charging switch 120 so that the battery/battery pack 20 is charged by the external power source via the main charging switch 120.

The battery/battery pack 20 may be a single battery or a battery pack in which a plurality of batteries are connected in series. The battery/cell stack 20 may be charged to store electrical energy and may also be discharged to provide the stored electrical energy to a load.

The chip 100 may further include a battery management module 130, and the battery management module 130 is configured to obtain measurement information of the battery/battery pack 20 so as to manage the battery/battery pack. For example, the battery management module 130 may acquire external battery current information, may acquire external battery temperature information, and the like, and control other components in conjunction with the acquired information.

The battery management module 130 may include, for example, a sampling submodule, an analog-to-digital conversion submodule, a filter submodule, a control logic submodule, a switch driving submodule, and the like. The sampling submodule can be used for sampling external signals required to be acquired, the sampled signals can be provided for the analog-to-digital conversion submodule, the analog-to-digital converted signals can be provided for the filter submodule, the filtered signals can be provided for the control logic submodule, the logic submodule provides control signals for the switch driving submodule, and the switch driving submodule is used for controlling a charging switch and a discharging switch of the battery. In addition, the battery management module may further include a memory, and the memory may store a battery protection algorithm for managing the battery.

An analog-to-digital conversion sub-module for converting analog signals collected from the outside of the chip into digital signals, and the analog-to-digital conversion sub-module may include a first analog-to-digital conversion sub-module 131 and a second analog-to-digital conversion sub-module 132. One of the analog-to-digital conversion modules can be used for collecting current, and the other analog-to-digital conversion module can be used for collecting each voltage of the battery, so that better sampling precision and sampling time can be realized.

The chip 100 may further include a voltage conversion module 140, and the voltage conversion module 140 is used to provide voltages required by other modules in the chip. The voltage conversion module 140 may be an LDO conversion module, a buck conversion module, or the like. The voltage conversion module 140 may be used to convert the highest voltage of the battery or battery pack into a first voltage by which the modules in the chip are powered.

The chip 100 may also include a processing module 150, the processing module 150 providing control signals that control external switches. The processing module 150 may store an external load control algorithm by which the external load may be controlled. The chip 100 may further include a driving module 160, and the driving module 160 receives a control signal provided by the processing module to control the external switch to be turned on or off, for example, when the load is a motor, the external switch may be a motor control switch.

In addition, the processing module 150 provides a control signal to the battery management module 130, and controls the external switch to be turned on and off through the battery management module 130.

The battery management module 130 controls the on and off of the main charging switch 120 and/or the discharging switch 500 of the battery/battery pack 20.

According to the chip of the above embodiment of the present disclosure, a smaller area of the printed circuit board can be occupied when assembling, and the assembling is simple, the cost can be reduced, and better ADC sampling accuracy and sampling time can be realized.

According to a further embodiment of the present disclosure, there is also provided a circuit board having a charging function.

As shown in fig. 2, the circuit board 10 may include the chip 100, wherein the chip may include one or more modules. In addition, the circuit board 10 may also include a charging interface 700, and the charging interface 700 is connected to the chip 100 and an external power source so as to charge the battery/battery pack 10 through the charger module 110 and the main charging switch 120.

The circuit board 10 further includes a backup charging switch 200, and the backup charging switch 200 is controlled so that the battery/battery pack 20 is charged by an external power source via the backup charging switch 200 when the main charging switch 120 malfunctions. Wherein, the backup charging switch 200 may be disposed outside the chip 100, and the backup charging switch 200 may be controlled by the backup management chip. The circuit board 10 further includes a standby management chip 300, and when the standby charging switch 200 needs to be operated, the standby charging switch 200 is controlled by the standby management chip 300.

The circuit board 10 further includes a discharge switch 500, and the discharge switch 500 is controlled by the battery management module 130 included in the chip 100 to control the discharge of the battery/battery pack 20.

The circuit board 10 further includes an external load control switch (in the case of a motor as a load, a motor control switch 600) that is driven by the driving module 160 included in the chip 10, and the processing module 150 included in the chip provides a control signal to the driving module 160.

As shown in fig. 3, the discharge switch also serves as an external load control switch, which is driven by the driving module 160 included in the chip 10, and the processing module 150 included in the chip 10 supplies a control signal to the driving module 160. A multiplexing switch that can implement both the discharge and load control switching functions is shown, for example, in fig. 3 in the form of a multiplexing switch 800.

As shown in fig. 4, the backup charging switch also serves as an external load control switch, which is driven by the driving module included in the chip, and the processing module included in the chip supplies a control signal to the driving module. For example, a multiplexing switch that can implement both the backup charge switch and the load control switch functions is shown in fig. 4 in the form of multiplexing switch 800.

By the embodiments of fig. 3 and 4, multiplexing of switches can be realized, so that functions of two switches can be realized by one switch, thereby effectively saving cost and the like.

The circuit board 10 further includes a current detection module 400 for detecting a current flowing through the battery/battery pack and providing the detected current value to the power management module.

The charging interface is a USB charging interface, and may be, for example, a USB interface, a Mini USB interface, or a Type-C interface.

The external load controlled by the circuit board 10 is a motor 30, the external load control switch is a motor control switch, and the driving module provides a pulse width modulation control signal to control the on and off of the motor control switch.

According to a further embodiment of the present disclosure, there is also provided a motor control system for controlling a motor, including:

a battery/cell pack that can be charged to store current or discharged to provide current; and the circuit board is used for controlling the charging and discharging of the battery/battery pack, and the battery/battery pack is charged through the external power supply through the circuit board or the current is supplied to the motor through the discharging of the battery/battery pack through the circuit board.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A chip with a charger module, said chip being capable of managing batteries/battery packs, said chip comprising:

a main charging switch controlled to charge the battery/cell stack; and

2. The chip of claim 1, wherein the chip further comprises: the battery management module is used for acquiring the measurement information of the battery/battery pack so as to manage the battery/battery pack.

3. The chip of claim 2, wherein the battery management module comprises an analog-to-digital conversion submodule for converting analog signals collected from outside the chip into digital signals.

4. The chip of claim 3, in which the number of analog-to-digital conversion submodules is two.

5. The chip of claim 2, further comprising a voltage conversion module to provide voltages required by other modules in the chip.

6. The chip of claim 2, wherein the chip further comprises a processing module that provides control signals that control external switches.

7. The chip of claim 6, wherein the chip further comprises a driving module, and the driving module receives the control signal provided by the processing module to control the external switch to be turned on and off.

8. The chip of claim 6, wherein the processing module provides the control signal to the battery management module and controls the external switch to be turned on and off by the battery management module.

9. A chip according to any one of claims 6 to 8, wherein the external switch is a motor control switch for controlling a motor.

10. The chip of claim 2, wherein the battery management module receives a current detection signal of a current flowing through the battery/battery pack and/or a voltage detection signal of a battery.

11. The chip of claim 2, wherein the battery management module controls the turning on and off of a main charging switch and/or a discharging switch of the battery/battery pack.

12. A circuit board having a charging function, characterized in that the circuit board comprises:

the chip of any one of claims 1 to 11; and

13. The circuit board of claim 12, further comprising a backup charging switch that is controlled to charge the battery/cell stack via the backup charging switch by an external power source upon failure of the primary charging switch.

14. The circuit board of claim 13, further comprising a backup management chip, wherein the backup charging switch is controlled by the backup management chip when the backup charging switch needs to be operated.

15. The circuit board of claim 12, further comprising a discharge switch controlled by a battery management module included with the chip to control discharge of the battery/cell stack.

16. The circuit board of claim 15, further comprising an external load control switch that is driven by a driver module included with the chip, and a processing module included with the chip provides control signals to the driver module.

17. The circuit board of claim 15, wherein the discharge switch also functions as an external load control switch that is driven by a driving module included in the chip, and a processing module included in the chip provides a control signal to the driving module.

18. The circuit board of claim 13, wherein the backup charge switch also functions as an external load control switch that is driven by a driver module included with the chip and a processing module included with the chip provides control signals to the driver module.

19. The circuit board of claim 12, further comprising a current detection module for detecting a current flowing through the battery/cell pack and providing the detected current value to the power management module.

20. The circuit board of claim 12, wherein the charging interface is a USB charging interface.

21. The circuit board according to any one of claims 16 to 18, wherein the external load controlled by the circuit board is a motor, the external load control switch is a motor control switch, and the driving module provides a pulse width modulation control signal to control the on and off of the motor control switch.

22. A motor control system for controlling a motor, comprising:

the circuit board of any one of claims 12 to 21, for controlling charging and discharging of the battery/cell stack,