TWI882531B - Power supply device - Google Patents

Abstract

The present invention provides a power supply device, which includes a case and a power supply system. A part of the power supply system is disposed in the case. The power supply system includes a power module, a power management module, and a display control module. When the power management module detects an abnormal status in the power module and generates an abnormal power status information, the power management module transmits the abnormal power status information to the display control module, so that the display control module shows an abnormal power status image according to the abnormal power status information. When the power module is in a power-off mode, the display control module is configured to continuously show the abnormal power status image .

Description

Power supply device

The present invention relates to a power supply device, and more particularly to a power supply device capable of continuously displaying abnormal power supply status in a power-off state.

In the field of existing power supply devices, when the power supply stops, it is difficult to tell from the appearance or terminal voltage whether the battery pack is simply out of power, faulty, or in a protection state. Because in the above states, the terminal voltage of the battery pack is usually off. Based on this, some problems arise in the use of battery packs.

Therefore, the inventor believes that the above defects can be improved, so he conducted intensive research and applied scientific principles, and finally proposed an invention with a reasonable design and effective improvement of the above defects.

The embodiment of the present invention provides a power supply device that can effectively improve the defects that may occur in existing power supply devices.

The present invention discloses a power supply device, comprising: a housing having a housing space, a power terminal being disposed on the outer surface of the housing; and a power supply system, part of which is disposed in the housing space, the power supply system being electrically connected to the power terminal, the power supply system being used to provide power to an electronic device through the power terminal, the power supply system comprising: a power module having a power supply state and a power off state, the power module providing the power in the power supply state; a power management module being electrically connected to the power module and detecting the power module to Generate a power status information; and a display control module, arranged outside the housing, the display control module displays at least one power status screen according to the power status information; wherein, when the power management module detects that the power module is abnormal and generates an abnormal power status information, the power management module transmits the abnormal power status information to the display control module, so that the display control module displays an abnormal power status screen according to the abnormal power status information; wherein, when the power module is in the power-off state, the display control module can continue to display the abnormal power status screen.

In summary, the power supply device disclosed in the embodiment of the present invention can accurately provide information about the power module and effectively improve the maintenance efficiency of the power module through the design of "when the power module is in the power-off state, the display control module can continuously display the abnormal power status screen".

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and do not limit the scope of protection of the present invention.

100: Power supply device

1: Shell

11: Storage space

12: Power terminal

2: Power supply system

21: Power module

211:Battery

22: Power management module

221: Switching components

222: Power monitoring unit

223: Power processing unit

224: Inductive flow measuring element

225: Power transmission unit

23: Display control module

231: Display processing unit

232: Display drive unit

233: Display unit

234: Storage unit

235: Display battery

236: Display transmission unit

237: Display screen

237-1: Battery display screen

237-2: Battery switch status display screen

237-3: Battery abnormality display screen

237-4: Battery health display screen

237-5: Suggestion message display screen

Figure 1 is a three-dimensional schematic diagram of the power supply device of the first embodiment of the present invention.

Figure 2 is a three-dimensional exploded schematic diagram of the power supply device of the first embodiment of the present invention.

Figure 3 is a schematic diagram of the circuit block of the power supply system of the first embodiment of the present invention.

Figure 4A is a schematic diagram showing the display screen of the display control module when the power module is in the power supply state.

Figure 4B is a schematic diagram showing the display screen of the display control module when the power module is in the power supply state.

Figure 4C is a schematic diagram showing the display screen of the control module when the power module is in a power-off state.

Figure 4D is a schematic diagram showing the display screen of the control module when the power module is in a power-off state.

Figure 4E is a schematic diagram showing the display screen of the control module when the power module is in a power-off state.

Figure 5 is a schematic diagram of the circuit block of the power supply system of the second embodiment of the present invention.

Figure 6 is a schematic diagram of the circuit block of the power supply system of the third embodiment of the present invention.

The following is a specific embodiment to illustrate the implementation of the "power supply device" disclosed in the present invention. The technical personnel in this field can understand the advantages and effects of the present invention from the content disclosed in this manual. The present invention can be implemented or applied through other different specific embodiments, and the details in this manual can also be modified and changed based on different viewpoints and applications without deviating from the concept of the present invention. In addition, the attached drawings of the present invention are only for simple schematic illustrations and are not depicted according to actual sizes. Please note in advance. The following implementation will further explain the relevant technical content of the present invention in detail, but the disclosed content is not used to limit the scope of protection of the present invention.

It should be understood that although the terms "first", "second", "third" and so on may be used in this article to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used in this article may include any one or more combinations of the related listed items depending on the actual situation.

[Implementation Example 1]

Please refer to Figures 1 to 4E, which are the first embodiment of the present invention. This embodiment discloses a power supply device 100, which can be used to provide a power supply to an electronic device (not shown in the figure); wherein the power supply device 100 includes a housing 1 and a power supply system 2 disposed in the housing 1.

It should be noted that, in order to facilitate understanding of this embodiment, the attached figure only presents the specific structure of the power supply device 100, so as to clearly present the structure and connection relationship of each component of the power supply device 100, but the present invention is not limited to the figure. The following will introduce each component of the power supply device 100 and its connection relationship.

The housing 1 has (or is surrounded by) a containing space 11, and a power terminal 12 is provided on the outer surface of the housing 1, and the power terminal 12 is used to be electrically connected to an electronic device (not shown in the figure). Furthermore, the power supply system 2 is partially disposed in the containing space 11, and the power supply system 2 is electrically connected to the power terminal 12, so that the power supply system 2 can provide a power source and transmit the power source to the electronic device through the power terminal 12.

Please refer to FIG. 1 to FIG. 3 , the power supply system 2 includes a power module 21, a power management module 22 electrically connected to the power module 21, and a display control module 23 coupled to the power management module 22. Specifically, the power module 21 has a power supply state and a power off state, and the power module 21 provides the power in the power supply state. In this embodiment, the power module 21 is a battery pack, and the battery pack includes a plurality of batteries 211 connected in series or in parallel. For example, the battery pack includes multiple groups of batteries 211, the batteries 211 in each group are connected in series, and then the multiple groups of batteries 211 are connected in parallel; or, the battery pack includes multiple groups of batteries 211, the batteries 211 in each group are connected in parallel, and then the multiple groups of batteries 211 are connected in series, but the present invention is not limited thereto.

The power management module 22 can be configured to continuously detect the state of the power module 21 to generate power state information. In this embodiment, the power management module 22 is equivalent to a battery management system (BMS). The power management module 22 generates the power state information by detecting the states of the multiple batteries 211 of the power module 21 (such as voltage state, current state, and temperature state, etc.). The power state information may include battery voltage information, battery current information, battery temperature information, battery state of charge (SOC) information, battery state of health (SOH) information, and battery state of energy (SOE), but is not limited thereto. Accordingly, after the power management module 22 generates the power status information again, the power management module 22 further transmits the power status information to the display control module 23.

As described above, if the power module 21 is abnormal, the power management module 22 can detect the abnormal state of the power module 21 to generate abnormal power state information. In this embodiment, when the power management module 22 detects the abnormal state of multiple batteries 211 of the power module 21 (such as: overvoltage state, overcurrent state, or overtemperature state, etc.), the abnormal power state information generated by the power management module 22 is transmitted to the display control module 23. The abnormal power state information may include overvoltage information, overcurrent information, overtemperature information, overcharge information, and overdischarge information.

As shown in FIG3 , the power management module 22 includes a switch element 221 electrically connected to the power module 21, a power monitoring unit 222 electrically connected to the power module 21 and the switch element 221, and a power processing unit 223 electrically connected to the power monitoring unit 222. The power module 21 provides the power to the power monitoring unit 222 and the power processing unit 223 through a power circuit (not shown).

The switch element 221 has two ends located at opposite sides, one end of the switch element 221 is connected in series with the power module 21, and the other end of the switch element 221 is used to connect in series with the electronic device. The switch element 221 is controlled by the power monitoring unit 222 to be in an on state or an off state, thereby controlling the power module 21 to be in the power supply state or the power off state. In other words, when the switch element 221 is in the on state, the power module 21 is in the power supply state; when the switch element 221 is in the off state, the power module 21 is in the power off state. When the power management module 22 detects that the multiple batteries 211 of the power module 21 are not in the abnormal state, the switch element 221 is in the on state, and the power module 21 is in the power supply state; when the power management module 22 detects that the multiple batteries 211 of the power module 21 are in the abnormal state, the switch element 221 is in the off state, and the power module 21 is in the power off state.

In addition, the switch element 221 is a switch made of a metal-oxide-semiconductor field-effect transistor (MOSFET) in this embodiment, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the switch element 221 can be a bipolar junction transistor (BJT), a single junction transistor (UJT), a silicon controlled rectifier (SCR) or other power switch elements.

As shown in FIG3 , the power monitoring unit 222 can be configured to continuously detect the status of the multiple batteries 211 to generate multiple battery status parameters. The multiple battery status parameters include a battery impedance parameter, a battery temperature parameter, a battery voltage parameter, a battery charging current parameter, and a battery discharging current parameter, but are not limited thereto. In this embodiment, the multiple battery status parameters generated by the power monitoring unit 222 can be processed and analyzed by subsequent circuits (such as the power processing unit).

Furthermore, the power monitoring unit 222 can control the switch element 221 to be in the on state or the off state according to the plurality of battery status parameters. In this embodiment, the power monitoring unit 222 can know whether the status of the plurality of batteries 211 of the power module 21 is abnormal according to the plurality of battery status parameters, and then control the switch element 221 to be in the on state or the off state, so as to protect the electronic device and the power supply device 100. For example, the power monitoring unit 222 detects the status of the multiple batteries 211, generates multiple battery voltage parameters, and compares whether the battery voltage parameters exceed a voltage threshold value; wherein, when the battery voltage parameter exceeds the threshold value, the power monitoring unit 222 controls the switch element 221 to be in the closed state, so that the power module 21 is in the power-off state, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the power processing unit 223 can receive the battery status parameter and control the switch element 221 to be in the on state according to the battery status parameter.

The power management module 22 in this embodiment may further include an inductive sensing element 224. The inductive sensing element 224 is connected in series between the power module 21 and the electronic device, and the power monitoring unit 222 detects the inductive sensing element 224 to generate a plurality of battery status parameters. For example, when the battery current parameter exceeds a current threshold value, the power monitoring unit 222 controls the switch element 221 to be in the closed state, so that the power module 21 is in the power-off state.

As shown in FIG. 3 , the power processing unit 223 can receive the multiple battery status parameters generated by the power monitoring unit 222, and the power processing unit 223 can process and calculate the multiple battery status parameters to generate the power status information. For example, after receiving the battery temperature parameter, the battery voltage parameter, the battery charging current parameter, and the battery discharging current parameter among the multiple battery status parameters generated by the power monitoring unit 222, the power processing unit 223 calculates the battery charge status information, the battery health status information, or the battery energy status information among the power status information according to the above parameters, and the power processing unit 223 transmits the above power status information to the display control module 23.

In addition, if the power module 21 is abnormal, the power processing unit 223 can calculate the overvoltage information, the overcurrent information, the overtemperature information, the overcharge information, or the overdischarge information in the abnormal power status information according to the battery temperature parameter, the battery voltage parameter, the battery charge current parameter, and the battery discharge current parameter among the plurality of battery status parameters. For example, when the temperature of the power module 21 is abnormal, the power processing unit 223 receives the battery temperature parameter from the power monitoring unit 222. The power processing unit 223 calculates the battery temperature parameter and finds out that the battery temperature parameter is too high, thereby generating the over-current information, and transmits the over-current information to the display control module 23.

As shown in FIG. 3 and FIG. 4A to FIG. 4E, the display control module 23 can display at least one power status screen according to the power status information. When the power module 21 is abnormal, the display control module 23 receives the abnormal power status information, and the display control module 23 displays an abnormal power status screen according to the abnormal power status information. When the power module 21 is in the power-off state, the display control module 23 can continue to display the abnormal power status screen. Accordingly, the present invention is designed such that when the power module 21 is in the power-off state, the display control module 23 can continuously display the abnormal power status screen, so that the power supply device 100 can accurately provide information about the power module 21 and effectively improve the maintenance efficiency of the power module 21. In order to facilitate a better understanding of the display control module 23 of this embodiment, the display control module 23 is described in detail below.

The display control module 23 includes a display processing unit 231, a display driving unit 232 electrically connected to the display processing unit 231, and a display unit 233 electrically connected to the display driving unit 232. The power module 21 provides the power to the display processing unit 231, the display driving unit 232, and the display unit 233 through a power circuit (not shown in the figure). The display processing unit 231 can generate a control signal according to the power status information and the abnormal power status information. In this embodiment, the display processing unit 231 is electrically connected to the power processing unit 223 to receive the power status information and the abnormal power status information.

Furthermore, the display drive unit 232 can be configured to generate a drive signal according to the control signal. The display unit 233 can display the power status screen and/or the abnormal power status screen according to the drive signal. Specifically, the display unit 233 can display the power status screen according to the power status information, and the display unit 233 can display the abnormal power status screen according to the abnormal power status information. When the power module 21 is in the power-off state, the display unit 233 can continuously display the abnormal power status screen. In this embodiment, the display unit 233 is an electrophoretic display or an electronic paper display. When the power module 21 is abnormal and in a power-off state, the electrophoretic display and the electronic paper display will continuously display the abnormal power status screen. Accordingly, the display unit 233 continuously displays the abnormal power status screen so that the user can understand the current abnormal cause of the power module 21 and effectively eliminate the abnormal cause.

In addition, within 50 milliseconds after the power management module 22 detects that the power module 21 is in an abnormal state, the power management module 22 transmits the abnormal power state information to the display control module 23 to drive the display unit 233 of the display control module 23 to display the abnormal power state screen, thereby instantly displaying the abnormal cause of the power module 21, so that the user can instantly understand the current abnormal cause of the power module 21.

Furthermore, when the power management module 22 detects that the power module 21 is in an abnormal state, and after the power management module 22 transmits the abnormal power state information to the display control module 23, the power management module 22 controls the power module 21 to switch to the power-off state. In other words, when the power management module 22 detects that the power module 21 is in an abnormal state, Normal state, and before the power management module 22 turns off the power module 21, the power management module 22 transmits the abnormal power state information to the display control module 23, so that the display control module 23 displays the abnormal power state screen, and the display control module 23 continues to display the abnormal power state screen when the power module 21 is in the power-off state.

As shown in FIG3 , the display control module 23 of the present embodiment further includes a storage unit 234 electrically connected to the display processing unit 231. The power module 21 provides the power to the storage unit 234 through a power circuit (not shown). The storage unit 234 includes a database, and the database stores a troubleshooting means message corresponding to the abnormal power status information. The display processing unit 231 can read the troubleshooting means message from the database according to the abnormal power status information, and the display processing unit 231 can provide the display unit 233 with the troubleshooting means message displayed separately from the abnormal power status screen through the display driving unit 232.

In this embodiment, the abnormal power status information further includes multiple fault codes, and the multiple fault codes may correspond to the overvoltage information, the overcurrent information, the overtemperature information, the overcharge information, or the overdischarge information in the abnormal power status information, so the display processing unit 231 can read the troubleshooting means information in the database through the multiple fault codes for display by the display unit 233. Accordingly, in addition to knowing the abnormal causes of the multiple batteries 211 through the abnormal power status screen, the user can also know how to eliminate the abnormal causes of the multiple batteries 211 through the troubleshooting means information. The following is an explanation of a display screen of the display unit 233.

As shown in FIG. 4A to FIG. 4B , the display screen 237 of the display unit 233 when the power module 21 is in the power supply state, the display screen 237 includes a power display screen 237-1, a battery switch status display screen 237-2, a battery status display screen 237-3, a battery health display screen 237-4, and a suggestion message display screen 237-5. Specifically, the power display screen 237-1 can display the remaining power of the power module 21 (e.g., the remaining power is 30%). The battery switch status display screen 237-2 can display the power module 21 in the power supply state or the power off state (e.g., both FIG. 4A and FIG. 4B show that the battery is turned on, indicating that the power module 21 is in the power supply state).

As mentioned above, the battery status display screen 237-3 can display the power status information or the abnormal power status information of the power module 21. When the power module 21 is in a normal state, the battery status display screen 237-3 displays the normal state (as shown in FIG. 4A ); when the power module 21 is in an abnormal state, the battery status display screen 237-3 displays the abnormal power status information (as shown in FIG. 4B ). The battery health display screen 237-4 can display the aging degree of the power module 21. The suggested message display screen 237-5 can display the troubleshooting means message corresponding to the battery status display screen 237-3. For example, if the temperature of the power module 21 is too high, a high temperature warning is displayed on the battery status display screen 237-3, and the troubleshooting means message "The battery temperature is too high, please reduce the load" is displayed through the suggested message display screen 237-5.

As shown in FIG. 4C to FIG. 4E , the present embodiment is different from the above-mentioned embodiment in that the power module 21 of the present embodiment is in the power-off state, and the battery switch state display screen 237-2 in the display screen 237 is the battery off state. In this state, the display unit 233 displays the abnormal power state information through the battery state display screen 237-3, and the troubleshooting means message can be displayed on the suggestion message display screen 237-5 corresponding to the battery state display screen 237-3. As shown in FIG. 4C , the display screen 237 displays the abnormal power status information as parallel abnormality on the battery status display screen 237-3, and the corresponding troubleshooting message displayed on the suggestion message display screen 237-5 is "please charge the two batteries until the power levels are close to each other."

[Implementation Example 2]

Please refer to FIG. 5, which is the second embodiment of the present invention. Since this embodiment is similar to the first embodiment, the similarities between the two embodiments will not be described in detail, and the differences between this embodiment and the first embodiment are roughly described as follows: As shown in FIG. 5, the display control module 23 further includes a display battery 235 electrically connected to the display processing unit 231, the display drive unit 232 and the display unit 233. When the power module 21 is in the power-off state, the display battery 235 can provide a display power to the display processing unit 231, the display drive unit 232 and the display unit 233. In this embodiment, since the display control module 23 continues to display the abnormal power status screen when the power module 21 is in a power-off state, the display battery 235 provides the display power to the display processing unit 231, the display drive unit 232 and the display unit 233, so that the display control module 23 can continue to display the abnormal power status screen when the power module 21 is in a power-off state.

[Implementation Example 3]

Please refer to FIG. 6, which is the third embodiment of the present invention. Since this embodiment is similar to the first embodiment, the similarities between the two embodiments will not be described in detail, and the differences between this embodiment and the first embodiment are roughly described as follows: The power management module 22 of this embodiment further includes a power transmission unit 225 electrically connected to the power processing unit 223, and the power transmission unit 225 transmits the power status information generated by the power processing unit 223. The display control module 23 further includes a display transmission unit 236 electrically connected to the display processing unit 231. The display transmission unit 236 receives the power status message transmitted by the power transmission unit 225, and transmits the power status message to the display processing unit 231. Accordingly, the power management module 22 and the display control module 23 can wirelessly transmit data to each other, so that the display control module 23 can be placed in a place where the user can see it conveniently, thereby increasing the convenience of use.

[Technical effects of the embodiments of the present invention]

In summary, the power supply device disclosed in the embodiment of the present invention can accurately provide information about the power module and effectively improve the maintenance efficiency of the power module through the design that "when the power module is in the power-off state, the display control module can continuously display the abnormal power status screen".

The above disclosed contents are only the preferred feasible embodiments of the present invention, and do not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the contents of the specification and drawings of the present invention are included in the patent scope of the present invention.

2: Power supply system

21: Power module

211:Battery

22: Power management module

221: Switching components

222: Power monitoring unit

223: Power processing unit

224: Inductive flow measuring element

23: Display control module

231: Display processing unit

232: Display drive unit

233: Display unit

234: Storage unit

Claims (7)

A power supply device, comprising: a housing having a housing space, wherein a power terminal is disposed on the outer surface of the housing; and a power supply system, which is partially disposed in the housing space, wherein the power supply system is electrically connected to the power terminal, and wherein the power supply system is used to provide power to an electronic device via the power terminal, wherein the power supply system comprises: a power module having a power supply state and a power failure state, wherein the power module provides the power to the electronic device and the power supply system in the power supply state; wherein the power module stops providing the power in the power failure state; a power management module, which is electrically connected to the power module and detects the state of the power module to generate power state information; and A display control module is arranged outside the housing, and the display control module displays at least one power status screen according to the power status information; Wherein, when the power management module detects an abnormal state of the power module and generates an abnormal power status information, the power management module transmits the abnormal power status information to the display control module, so that the display control module displays an abnormal power status screen according to the abnormal power status information; Wherein, the display control module includes: A display processing unit generates a control signal according to the power status information or the abnormal power status information; A display drive unit, electrically connected to the display processing unit, the display drive unit generates a drive signal according to the control signal; and A display unit, which is an electrophoretic display or an electronic paper display, and the display unit is electrically connected to the display drive unit, the display unit displays the power status screen or the abnormal power status screen according to the drive signal; and Wherein, when the power module is in the power-off state, the display control module can continuously display the abnormal power status screen through the electrophoretic display or the electronic paper display; The display control module further includes a storage unit electrically connected to the display processing unit, the storage unit includes a database, and the database stores a troubleshooting means message corresponding to the abnormal power status information; the display processing unit reads the troubleshooting means message from the database according to the abnormal power status information, and the display processing unit uses the display driving unit to allow the display unit to display the troubleshooting means message separately from the abnormal power status screen. A power supply device as described in claim 1, wherein the power module comprises a plurality of batteries connected in series or in parallel, and the power management module comprises: a switch element having two ends located on opposite sides, one end of the switch element being connected in series with the power module, and the other end of the switch element being used to connect in series with the electronic device; a power monitoring unit electrically connecting the power module and the switch element, and detecting the states of the plurality of batteries to generate a plurality of battery state parameters; and a power processing unit electrically connected to the power monitoring unit; wherein the power processing unit can process and calculate the battery state parameters to generate the power state information or the abnormal power state information; Wherein, the power monitoring unit controls the switching element to turn on or off according to the multiple battery status parameters. The power supply device as described in claim 2, wherein the power management module further includes an inductive sensing element connected in series between the power module and the electronic device, and the power monitoring unit detects the inductive sensing element to generate a plurality of battery status parameters. A power supply device as described in claim 1, wherein the display control module further includes a display battery electrically connected to the display processing unit, the display drive unit and the display unit; when the power module is in the power-off state, the display battery provides a display power to the display processing unit, the display drive unit and the display unit. A power supply device as described in claim 1, wherein the power management module further includes a power transmission unit electrically connected to the power processing unit, and the power transmission unit transmits the power status information generated by the power processing unit; the display control module further includes a display transmission unit electrically connected to the display processing unit, and the display transmission unit receives the power status message transmitted by the power transmission unit, and the display transmission unit transmits the power status message to the display processing unit. A power supply device as described in claim 1, wherein, within 50 milliseconds after the power management module detects that the power module is abnormal, the power management module transmits the abnormal power status information to the display control module to drive the display control module to display the abnormal power status screen. A power supply device as described in claim 1, wherein when the power management module detects that the power module is abnormal and after the power management module transmits the abnormal power status information to the display control module, the power management module controls the power module to switch to the power-off state.

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