CN105490318B - Device and method for judging battery module and electronic device - Google Patents

Abstract

A judging device for a battery module is coupled with a chip module and comprises a voltage reference module used for generating a comparison voltage; and a logic judgment module for receiving an input voltage and the comparison voltage of the battery module, determining the type of the battery module according to a comparison result of the input voltage and the comparison voltage, and outputting a working voltage to set a preset working voltage value of the chip module.

Description

Battery module judging device, judging method and electronic device

technical field

The present invention refers to a judging device, judging method and electronic device for a battery module, especially a judging device that can be used to judge the type of a battery module, so as to correspondingly set the operating voltage of a chip module coupled to the electronic module .

Background technique

Currently commercially available mobile electronic devices, such as notebook computers or tablet devices, are often equipped with different types of replaceable battery modules due to different product specifications and design requirements, such as two-cell (2-cell) serial connection, three-cell ( 3cell) in series, etc., or use more battery cells in series. In this case, since a chip module coupled to the battery module can only use a fixed operating voltage value, when the user inserts a different type of battery module or a system management (SM) bus of the electronic device fails , will make the chip module operate at a non-fixed working voltage value, and then cause the battery module to generate an over-voltage protection or a low-voltage protection.

Therefore, it has become an important subject in this field to provide a judging device that can be used to judge the type of a battery module so as to correspondingly set the working voltage of a chip module coupled to the electronic module.

Contents of the invention

Therefore, the main purpose of the present invention is to provide a judging device, judging method and electronic device for judging the type of a battery module, so as to correspondingly set the working voltage of a chip module coupled to the electronic module.

The invention discloses a judging device for a battery module, which is coupled to a chip module. The judging device includes a voltage reference module for generating a comparison voltage; and a logic judging module for receiving a voltage of the battery module. The input voltage and the comparison voltage determine the type of the battery module according to a comparison result between the input voltage and the comparison voltage, and then output an operating voltage to set a preset operating voltage value of the chip module.

The present invention also discloses a judging method for a judging device, the judging device is coupled to a battery module and a chip module, the judging method includes generating a comparison voltage; receiving an input voltage of the battery module, and according to the A comparison result between the input voltage and the comparison voltage determines the type of the battery module, and then outputs an operating voltage to set a preset operating voltage value of the chip module.

The present invention also discloses an electronic device, which includes a voltage reference module used to generate a comparison voltage; a battery module used to generate an input voltage; an embedded controller used to generate an embedded control signal; a chip module, Coupling the battery module and the embedded controller; and a logic judgment module, coupled to the chip module, the embedded controller and the battery module, for receiving the input voltage, the comparison voltage and the embedded control signal, and according to A comparison result between the input voltage and the comparison voltage determines the type of the battery module, and then outputs an operating voltage to set a preset operating voltage value of the chip module.

Description of drawings

FIG. 1 is a simplified schematic diagram of an electronic device according to an embodiment of the present invention.

FIG. 2 is a detailed schematic diagram of some components of the electronic device in FIG. 1 .

FIG. 3 is a flow chart of a judgment process according to Embodiment 1 of the present invention.

Wherein, the reference signs are explained as follows:

10 electronics

100 voltage reference modules

102 logic judgment module

1020 logic judgment unit

1022 setting unit

104 chip modules

106 battery module

108 Embedded Controller

30 Judgment method

300, 302, 304, 306, 308 steps

U1 comparator

R1～R7 resistance

Q1～Q3 Transistor switch

D1～D3 Diodes

C1 capacitor

VREG operating voltage

VIN initial voltage

V2 drive voltage

V_Ref comparison voltage

V_B input voltage

S_EC embedded control signal

S_BAT control signal

SMBus system management bus

Detailed ways

Certain terms are used in the specification and following claims to refer to particular elements. Those of ordinary skill in the art should understand that manufacturers may use different terms to refer to the same element. This description and the following claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the basis for the difference. "Includes" mentioned throughout the specification and subsequent claims is an open-ended term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device can be directly connected to the second device, or indirectly connected to the second device through other devices or connection means.

Please refer to FIG. 1 , which is a schematic diagram of an electronic device 10 according to an embodiment of the present invention. As shown in FIG. 1 , the electronic device 10 includes a voltage reference module 100 , a logic judgment module 102 , a chip module 104 , a battery module 106 and an embedded controller 108 . In this embodiment, the voltage reference module 100 can generate a comparison voltage V_Ref and transmit it to the logic judgment module 102 . After the battery module 106 is coupled to the electronic device 10 , the battery module 106 can be coupled to the chip module 104 through a system management (SM) bus SMBus, and simultaneously generate an input voltage V_B to the logic judgment module 102 . In addition, when the battery module 106 is coupled to the embedded controller 108 , the embedded controller 108 will adaptively generate an embedded control signal S_EC to the logic judgment module 102 . As for the logic judgment module 102 in this embodiment, it will receive the comparison voltage V_Ref, the input voltage V_B and the embedded control signal S_EC, and determine the type of the battery module 106 according to a comparison result of the input voltage V_B and the comparison voltage V_Ref, and then output a working voltage to set a preset working voltage value of the chip module 104 .

Preferably, the type of the battery module 106 in this embodiment may include a design of two battery cells (2 cells) connected in series or a design of three battery cells (3 cells) connected in series. In other words, if the electronic device 10 has different functional designs or users have different needs, the battery module 106 in this embodiment can also be compatible with battery modules with different capacities, and only needs to first judge the input through the logic judgment module 102 The magnitude of the voltage V_B determines the type of the battery module 106 correspondingly, and then sets the preset operating voltage value of the chip module.

In the known technology, when the user inserts a different type of battery module or the system management bus of the electronic device fails, since the chip module will be operated at a non-preset operating voltage value that deviates from the original preset operating voltage, accordingly, The battery module will undergo an overvoltage protection or a low voltage protection. In contrast, this embodiment utilizes the logic judgment module 102 to judge the type of the battery module 106 (that is, the capacity corresponding to the battery module 106), so as to set the preset operating voltage value of the chip module correspondingly, so that the electronic device 10 Battery modules with different capacities can be plugged freely, thereby improving the application range of the electronic device 10 . Of course, those skilled in the art can also modify the judging mechanism of the logic judging module 102, so that the type of the battery module 106 in this embodiment can also be a single battery cell, or more than three battery cells connected in series, It is not intended to limit the scope of the present invention.

Please refer to FIG. 2 again. FIG. 2 is a detailed schematic diagram of some components of the electronic device 10 in FIG. 1 . As shown in FIG. 2 , the voltage reference module 100 includes resistors R1 and R2, which divide an initial voltage VIN by applying Ohm’s law and properly adjusting the resistance values of the resistors R1 and R2, and correspondingly generate a comparison voltage V_Ref and It is transmitted to the logic judgment module 102. In addition, the logic judgment module 102 in this embodiment includes a logic judgment unit 1020 and a setting unit 1022 . In this embodiment, the logic judgment unit 1020 includes a comparator U1, resistors R3, R4, a transistor switch Q1 and a diode D1, and the setting unit 1022 includes resistors R5, R6, R7, transistor switches Q2, Q3, Diodes D2, D3 and a capacitor C1. Accordingly, the logic judgment unit 1020 receives the input voltage V_B to judge whether a voltage value of the input voltage V_B exceeds the comparison voltage V_Ref, and when the voltage value exceeds the comparison voltage V_Ref, the logic judgment unit 1020 judges that the type of the battery module 106 is a three-cell battery The cores are connected in series, and the preset operating voltage value of the chip module 104 is set corresponding to the output operating voltage value. When the logic judging unit 1020 judges that the voltage value does not exceed the comparison voltage V_Ref, the setting unit 1022 resets the preset working voltage value of the chip module 104 to be a double battery cell connected in series.

In detail, the voltage reference module 100 correspondingly adjusts the resistance values of the resistors R1 and R2 to generate a comparison voltage V_Ref of 8.8 volts, and transmits the comparison voltage V_Ref to the comparator U1. When the battery module 106 is inserted into the electronic device 10 (or the system management bus has not been established, or the system management bus has failed), the battery module 106 also transmits the input voltage V_B to the comparator U1. Accordingly, when the input voltage V_B is greater than the comparison voltage V_Ref (that is, the input voltage V_B is greater than 8.8 volts), the transistor switch Q1 will be correspondingly turned off, so that an operating voltage VREG is directly used to set the chip module 104 as a high-level signal , and the preset operating voltage value of the chip module 104 is set to be the applicable voltage for the series connection of three battery cells.

When the input voltage V_B is less than the comparison voltage V_Ref (that is, the input voltage V_B is less than 8.8 volts), the transistor switch Q1 of the setting unit 1022 will be correspondingly turned on, and a pin of the chip module 104 will be in a floating state. At this time, the resistors R3, R4, R7 and the diodes D1-D3 can be used to prevent a reverse voltage and avoid damage to the chip module 104, and the resistors R5 and R6 can also suitably generate a driving voltage V2 of 3.3 volts, and when the battery module After 106 is inserted into the electronic device 10, a low-state control signal S_BAT will be correspondingly generated, so that the transistor switch Q3 is correspondingly turned on, and then the capacitor C1 starts to store electricity after the diode D3 is turned on, so as to generate a pulse after the capacitor C1 is turned on momentarily. The signal is used to correspondingly start the transistor switch Q2, and then reset the preset operating voltage value of the chip module 104 to the voltage applicable to the series connection of double battery cells. In addition, the embedded controller 108 in this embodiment is also used to directly generate an embedded control signal S_EC to correspondingly set the preset operating voltage value of the chip module 104, thereby solving the problem of the battery module 106 inserted into the electronic device 10. The operating voltages applicable to the chip module 104 are incompatible with each other, the system management bus has not been established, or the system management bus has been shown to fail, etc., and prevent the chip module from operating in a non-preset operation that deviates from the original preset operating voltage voltage value, excluding the case that the battery module will be operated as voltage protection or low voltage protection and cannot operate normally.

Furthermore, the judgment method applied by the logic judgment module 102 of the electronic device 10 in this embodiment can be further summarized into a judgment process 30 , as shown in FIG. 3 . Judgment process 30 includes the following steps:

Step 300: start.

Step 302: The voltage reference module 100 generates a comparison voltage V_Ref.

Step 304: The comparator U1 of the logic judgment unit 1020 receives the input voltage V_B of the battery module 106, and judges whether the magnitude of the input voltage V_B exceeds the value of the comparison voltage V_Ref. When the input voltage V_B exceeds the value of the comparison voltage V_Ref, go to step 306 ; otherwise, go to step 308 .

Step 306: The logic judgment unit 1020 judges that the type of the battery module 106 is a three-cell series connection, and sets a preset working voltage value of the chip module 104 corresponding to the output working voltage value.

Step 308 : The setting unit 1022 resets the default operating voltage value of the chip module 104 by using the on-off operation of the transistor switch Q3 or the embedded control signal S_EC to double the series connection of battery cells.

The detailed operation content of the determination process 30 provided in this embodiment can be further understood in FIG. 1 , FIG. 2 and related paragraphs, so details are omitted here. It is worth noting that the operation sequence of steps 302 and 304 of the judgment process 30 is not intended to limit the scope of the present invention, that is, those skilled in the art can also modify relevant content appropriately so that the comparator U1 of the logic judgment unit 1020 receives the battery module After the input voltage V_B of 106 is obtained, the voltage reference module 100 generates a comparison voltage V_Ref, and then the comparator U1 judges whether the magnitude of the input voltage V_B exceeds the value of the comparison voltage V_Ref, and proceeds to step 306 or step 308 .

In short, in this embodiment, the voltage reference module 100 first generates the comparison voltage V_Ref, and after the battery module 106 is inserted into the electronic device 10, the logic judgment module 102 sets/resets the preset working voltage of the chip module 104 correspondingly. value, thereby preventing the battery module 104 from being unable to operate normally due to over-voltage protection or low-voltage protection. Of course, those skilled in the art can also appropriately modify the setting operation of the comparison voltage V_Ref and the logic judgment module 102 in this embodiment, for example, the comparison voltage V_Ref is integrated into the logic judgment module 102 to form a voltage judgment module, and the voltage judgment The module is directly coupled between the battery module 106 and the chip module 104 . Furthermore, the types of transistor switches depicted in this embodiment are only exemplary illustrations. In addition, those skilled in the art can also adapt the original voltage reference module 100 to generate multiple sets of comparison voltages to correspond to batteries with different capacities. module, and after the battery module 106 is inserted into the electronic device 10, the voltage judging module judges which one of the multiple comparison voltages the capacitance of the battery module 106 is, and then sets the preset operation of the chip module 104 corresponding to the output working voltage value A voltage value of a single battery cell, two battery cells connected in series, three battery cells connected in series, or more than three battery cells connected in series also belongs to the scope of the present invention.

To sum up, the embodiments of the present invention provide a battery module judging device and method for an electronic device. The judging device is provided with a logic judging module for correspondingly judging the capacity of the battery module, so as to set Set/reset the preset operating voltage value of the chip module coupled to the battery module, thereby preventing the battery module from being unable to operate normally due to over-voltage protection or low-voltage protection. At the same time, this embodiment can also solve the problem of electronic devices The corresponding system management bus has not been established, or the system management bus has been shown to fail, thereby improving the application range of the electronic device.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (9)

1. A judging device for a battery module, coupled to a chip module, the judging device comprising: a voltage reference module, used to generate a comparison voltage; and A logic judgment module, used to receive an input voltage of the battery module and the comparison voltage, and determine the type of the battery module according to a comparison result between the input voltage and the comparison voltage, and then output an operating voltage to set the battery module a preset operating voltage value of the chip module, The type of the battery module includes a series connection of two battery cells or a series connection of three battery cells, Wherein the logic judgment module also includes: A logic judging unit, used to receive the input voltage and the comparison voltage, to judge whether a voltage value of the input voltage exceeds the comparison voltage, and when the voltage value exceeds the comparison voltage, judge that the type of the battery module is the The three battery cells are connected in series, and correspondingly output the working voltage value to set the preset working voltage value of the chip module. 2. The judging device according to claim 1, wherein the logical judgment module further comprises: A setting unit is used for resetting the preset operating voltage value of the chip module when the logic judging unit judges that the voltage value does not exceed the comparison voltage. 3. The judging device according to claim 2, wherein the setting unit also utilizes an embedded control signal or an on-off operation of a switch element to correspondingly turn on a capacitor unit to generate a pulse signal, and then reset the chip module The preset operating voltage value is the double battery cell connected in series. 4. A judging method for a judging device, the judging device is coupled to a battery module and a chip module, the judging method comprising: generating a comparison voltage; and receiving an input voltage of the battery module, and determining the type of the battery module according to a comparison result between the input voltage and the comparison voltage, and then outputting an operating voltage to set a preset operating voltage value of the chip module, The type of the battery module includes a series connection of two battery cells or a series connection of three battery cells, The method also includes using a logic judging unit to judge whether a voltage value of the input voltage exceeds the comparison voltage, and when the voltage value exceeds the comparison voltage, judging that the type of the battery module is the three battery cells connected in series, and The preset working voltage value of the chip module is set corresponding to the outputting working voltage value. 5. The judging method according to claim 4, further comprising, when the logic judging unit judges that the voltage value does not exceed the comparison voltage, using a setting unit to reset the preset operating voltage value of the chip module Connect the dual battery cells in series. 6. The judging method as claimed in claim 5, further utilizing an embedded control signal or an on-off operation of a switching element to correspondingly turn on a capacitor unit to generate a pulse signal, thereby resetting the preset of the chip module The working voltage value is that the double battery cells are connected in series. 7. An electronic device comprising: a voltage reference module, used to generate a comparison voltage; a battery module, used to generate an input voltage; an embedded controller for generating an embedded control signal; a chip module, coupled to the battery module and the embedded controller; and A logic judgment module, coupled to the chip module, the embedded controller and the battery module, used to receive the input voltage, the comparison voltage and the embedded control signal, and determine according to a comparison result between the input voltage and the comparison voltage determining the type of the battery module, and then outputting an operating voltage to set a preset operating voltage value of the chip module, The type of the battery module includes a series connection of two battery cells or a series connection of three battery cells, The logic judgment module also includes: A logic judging unit, used to receive the input voltage and the comparison voltage, to judge whether a voltage value of the input voltage exceeds the comparison voltage, and when the voltage value exceeds the comparison voltage, judge that the type of the battery module is the The three battery cells are connected in series, and correspondingly output the working voltage value to set the preset working voltage value of the chip module. 8. The electronic device as claimed in claim 7, wherein the logic judgment module further comprises: A setting unit is used for resetting the preset operating voltage value of the chip module when the logic judging unit judges that the voltage value does not exceed the comparison voltage. 9. The electronic device as claimed in claim 8, wherein the setting unit also uses the embedded control signal or the opening and closing operation of a switch element to correspondingly turn on a capacitor unit to generate a pulse signal, and then reset the chip module The preset operating voltage value is the double battery cell connected in series.