Mobile power supply based on security mode control
Patent Information
- Application Number
- CN202521904234.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-09-04
AI Technical Summary
因此，移动电源即便没有与外设连接，不进行充电放电，电池模块与电源管理模块还是处于长时间供电状态，且供电通道能提供的电流能力能量非常大，此时如果电池模块与电源管理模块电路发现故障，就可能导致电路故障点在大电流的作用下持续发热、起火或爆炸，相继引发电池在受热和大电流双重作用下持续发热、起火或爆炸，最终造成整个移动电源起火自燃，让移动电源的存放、携带（如乘机时携带、存放）、运输都处于不可控的安全风险之下
本实用新型提供一种基于安全模式控制的移动电源，该移动电源包括：安全模式控制开关，所述安全模式控制开关设置在移动电源的壳体上，用于在用户操作时生成安全模式操作信号；电池模块，所述电池模块设置在移动电源的壳体内部，作为移动电源的充放电电源；电源管理模块，所述电源管理模块设置在移动电源的壳体内部，用于对所述电池模块进行管理，所述电源管理模块在所述安全模式操作信号未生成时与所述电池模块之间的供电通道开启；供电切断控制模块，所述供电切断控制模块设置在移动电源的壳体内部，用于接收所述安全模式操作信号并根据接收到所述安全模式操作信号，控制所述电池模块与所述电源管理模块之间的供电通道断开。该移动电源可以实现使用者自主选择切断电池模块与电源管理模块之间的供电通道，避免电池模块与电源管理模块电路故障引发移动电源起火自燃、爆炸，使得移动电源的存放、携带（如乘机时携带、存放）、运输都能安全进行。
Smart Images
Figure CN224733463U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile power bank technology, and in particular to a mobile power bank based on safety mode control. Background Technology
[0002] Portable power banks (also known as power banks) typically consist of a battery module, a lithium protection module, and a power management module. The battery module is electrically connected to the power management module via the lithium protection module, which in turn is electrically connected to the power bank's sleep control switch. When the sleep control switch is pressed or touched, the lithium protection module sends a sleep control signal to the power management module, putting the power management module into sleep mode. Even in sleep mode, the power management module maintains its power supply; the power supply channel between the battery module and the power management module is not cut off, and the user cannot manually disconnect the power supply. Therefore, even when the power bank is not connected to any external device and is not charging or discharging, the battery module and power management module remain powered for extended periods. Since the power supply channel can provide a very large current, if a fault is detected in the battery module or power management module circuitry, the fault point may overheat under the influence of high current, potentially leading to a fire or explosion. This could subsequently cause the battery to overheat, catch fire, or explode under the combined effects of heat and high current, ultimately resulting in the entire power bank catching fire and spontaneously combusting. This places the storage, carrying (e.g., during air travel), and transportation of the power bank under uncontrollable safety risks.
[0003] In summary, existing power banks have several technical problems, including the inability of users to independently disconnect the power supply between the battery module and the power management module, the potential for faults in the battery module and power management module circuits to cause the power bank to catch fire, spontaneously combust, or explode, and uncontrollable safety risks associated with the storage, carrying (such as when carrying or storing during air travel), and transportation of power banks. Utility Model Content
[0004] To address the shortcomings of the existing technology, this utility model provides a portable power bank based on safety mode control, which allows users to independently choose to cut off the power supply channel between the battery module and the power management module, thereby preventing the portable power bank from catching fire, spontaneously combusting, or exploding due to circuit failures in the battery module and the power management module. This ensures that the portable power bank can be safely stored, carried (e.g., carried and stored during air travel), and transported.
[0005] The portable power bank based on safety mode control provided by this utility model includes: A safety mode control switch is disposed on the housing of the power bank and is used to generate a safety mode operation signal when the user operates it. A battery module, which is disposed inside the casing of the power bank and serves as the charging and discharging power source for the power bank; A power management module is installed inside the casing of the power bank and is used to manage the battery module. The power supply channel between the power management module and the battery module is opened when the safe mode operation signal is not generated. A power supply cut-off control module is installed inside the housing of the power bank. It is used to receive the safety mode operation signal and, based on the received safety mode operation signal, control the power supply channel between the battery module and the power management module to be disconnected.
[0006] Furthermore, the power supply cut-off control module includes a lithium protection module, which is used to receive the safety mode operation signal and, based on the received safety mode operation signal, control the power supply channel between the battery module and the power management module to be disconnected.
[0007] Furthermore, the lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection chip circuit is used to receive the safety mode operation signal and generate a power supply cut-off control signal upon receiving the safety mode operation signal. The power supply cut-off control signal is transmitted to the lithium protection switch circuit through the lithium protection chip circuit. The lithium protection switch circuit receives the power supply cut-off control signal and controls the power supply channel between the battery module and the power management module to be disconnected according to the received safety mode operation signal.
[0008] Furthermore, the lithium protection chip circuit is electrically connected to the safety mode control switch and to the lithium protection switch circuit; the lithium protection switch circuit is electrically connected to the power management module and to the battery module.
[0009] Furthermore, the lithium protection chip circuit is also electrically connected to the battery module to collect signals from the battery module.
[0010] Furthermore, the power supply cut-off control module includes a switching circuit and a lithium protection module; the switching circuit is in an on state when the safety mode operation signal is not generated to control the connection between the battery module and the lithium protection module, so that the power supply path of the battery module to the power management module through the switching circuit and the lithium protection module is turned on; after the safety mode operation signal is generated, the switching circuit receives the generated safety mode operation signal and controls the connection between the battery module and the lithium protection module to disconnect according to the received safety mode operation signal, so that the power supply path of the battery module to the power management module through the switching circuit and the lithium protection module is disconnected.
[0011] Furthermore, the lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection switch circuit is electrically connected to the switch circuit, the power management module, and the lithium protection chip circuit, respectively. The switch circuit is electrically connected to the battery module.
[0012] Furthermore, the lithium protection chip circuit is also electrically connected to the battery module to collect signals from the battery module.
[0013] Furthermore, the safety mode control switch is an external mechanical button switch, or the safety mode control switch is an external touch switch.
[0014] Compared with the prior art, the advantages of this utility model are as follows: This invention provides a portable power bank based on safety mode control. The portable power bank includes: a safety mode control switch disposed on the casing of the power bank, used to generate a safety mode operation signal when operated by the user; a battery module disposed inside the casing of the power bank, serving as the charging and discharging power source; a power management module disposed inside the casing of the power bank, used to manage the battery module, and the power supply channel between the power management module and the battery module is open when the safety mode operation signal is not generated; and a power supply cut-off control module disposed inside the casing of the power bank, used to receive the safety mode operation signal and, based on the received signal, control the power supply channel between the battery module and the power management module to be disconnected. This portable power bank allows the user to independently choose to disconnect the power supply channel between the battery module and the power management module, preventing fires, spontaneous combustion, and explosions caused by circuit failures in the battery module and power management module, thus ensuring the safe storage, carrying (e.g., during air travel), and transportation of the portable power bank. Attached Figure Description
[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention. Some specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings designate the same or similar parts or components. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic diagram of a mobile power supply based on safety mode control according to an embodiment of the present invention; Figure 2This is a schematic diagram of a circuit structure of a mobile power supply based on safety mode control according to an embodiment of the present invention; Figure 3 This is a schematic diagram of another circuit structure of a mobile power supply based on safety mode control according to an embodiment of this utility model.
[0016] Explanation of reference numerals in the attached figures: 1. The casing of the power bank; 2. Safety mode control switch; 3. Power supply cut-off control module. Detailed Implementation
[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.
[0018] See Figures 1-3 This embodiment provides a portable power bank based on safety mode control, the portable power bank comprising: Safety mode control switch 2, which is disposed on the housing 1 of the power bank, is used to generate a safety mode operation signal when the user operates it. A battery module, which is disposed inside the casing of the power bank and serves as the charging and discharging power source for the power bank; A power management module is installed inside the casing of the power bank and is used to manage the battery module. The power supply channel between the power management module and the battery module is opened when the safe mode operation signal is not generated. The power supply cut-off control module 3 is located inside the housing of the power bank and is used to receive the safety mode operation signal and, based on the received safety mode operation signal, control the power supply channel between the battery module and the power management module to be disconnected.
[0019] In this embodiment, a safety mode control switch is provided on the power bank casing to generate a safety mode operation signal. A power supply cut-off control module is provided to receive the safety mode operation signal and, accordingly, control the disconnection of the power supply channel between the battery module and the power management module. This solves the technical problem that users cannot independently choose to disconnect the power supply channel between the battery module and the power management module. Specifically, the safety mode control switch, as a human-machine interface, converts the user's physical operation (pressing or touching) into an electrical signal (safety mode operation signal). Simultaneously, the power supply cut-off control module receives the electrical signal generated by the aforementioned safety mode control switch and, based on this input electrical signal, executes hardware control actions, that is, physically disconnects the power supply path between the battery module and the power management module, achieving the technical effect of fundamentally physically cutting off the high-current power supply path. This allows users to actively trigger the power cut-off by operating the safety mode control switch before storing, carrying, or transporting the power bank, or before boarding a flight, placing the power bank in a truly safe mode with no charging or discharging power. Therefore, even if any circuit failure occurs inside the power bank later, the power supply path has been physically cut off, and the fault point cannot form a circuit. This completely eliminates the risk of the circuit fault point continuously heating up, catching fire, or exploding under the action of high current. This achieves the technical effect of transforming the storage, carrying (such as carrying and storing during air travel), and transportation of power banks from an uncontrollable safety risk to a safe state that is controllable by the user.
[0020] Preferably, the power supply cut-off control module includes a lithium protection module, which is used to receive the safety mode operation signal and, based on the received safety mode operation signal, control the power supply channel between the battery module and the power management module to be disconnected.
[0021] In this embodiment, the power supply cut-off control module includes a lithium protection module. This module receives the safety mode operation signal and, based on the received signal, controls the power supply channel between the battery module and the power management module to disconnect. This solves the technical problem of how to efficiently and integratedly achieve power supply channel disconnection. The specific structure of the power supply cut-off control module can be implemented using the lithium protection module. Based on the existing lithium battery protection of the lithium protection module, a circuit structure for receiving the safety mode signal and executing power-off control is added, achieving the technical effects of saving internal space, reducing hardware costs, and simplifying the circuit structure. From a signal flow and structural perspective, the lithium protection module itself is an electrical connection hub located between the battery module and the power management module, naturally connected in series on the main power supply channel. By designing its internal circuitry, it can respond to electrical signals from the safety mode control switch and drive its internal switching elements (such as MOSFETs) to operate, thereby utilizing its existing circuit location advantage to efficiently complete the physical on / off control of the power supply channel. It should be noted that when implementing the circuit structure for receiving the safety mode signal and performing power-off control in the lithium protection module, those skilled in the art can implement it according to conventional circuit schemes in various existing technologies, and this embodiment will not elaborate on it.
[0022] Preferably, the lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection chip circuit is used to receive the safety mode operation signal and generate a power supply cut-off control signal upon receiving the safety mode operation signal. The power supply cut-off control signal is transmitted to the lithium protection switch circuit through the lithium protection chip circuit. The lithium protection switch circuit receives the power supply cut-off control signal and controls the power supply channel between the battery module and the power management module to be disconnected according to the received safety mode operation signal.
[0023] In this embodiment, the lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection chip circuit receives signals and generates a power supply cut-off control signal, which is transmitted to the lithium protection switch circuit. The lithium protection switch circuit receives the signal and controls the power supply channel to disconnect. This solves the technical problem of how to specifically implement the lithium protection module's response to and execution of the safety mode signal. In this embodiment, the lithium protection module is divided into two hardware sub-circuits with clear functional division and signal interaction relationship: the lithium protection chip circuit and the lithium protection switch circuit. The safety mode operation signal is first received and decoded by the lithium protection chip circuit processing unit. Then, the chip outputs a logic signal (power supply cut-off control signal) that can directly drive the power switch. This control signal is then transmitted to the lithium protection switch circuit (e.g., a power switch array composed of one or more MOSFETs) through circuit traces. Finally, the power switch circuit executes the actual hardware action, such as changing the conduction state of its internal MOSFETs, thereby physically disconnecting the power supply channel. It is important to note that this hardware structure combining a control chip with a power switch is a classic and mature implementation method in electronic circuits. It achieves the technical effect of separating signal processing from the power drive of the high-current channel, ensuring both the accuracy of the control logic and the ability to safely and reliably control the power supply path of the charging and discharging power signal.
[0024] Preferably, the lithium protection chip circuit is electrically connected to the safety mode control switch and to the lithium protection switch circuit; the lithium protection switch circuit is electrically connected to the power management module and to the battery module.
[0025] In this embodiment, the lithium protection chip circuit is electrically connected to the safety mode control switch and also electrically connected to the lithium protection switch circuit. The lithium protection switch circuit is electrically connected to the power management module and the battery module, which solves the technical problem of how to correctly interconnect the various functional modules to form a complete and working safety control loop. The signal generated by the safety mode control switch is directly connected to the input pin of the lithium protection chip circuit via a wire. The drive signal generated by the lithium protection chip circuit is connected to the lithium protection switch circuit via a wire. The battery module is connected to the input side of the lithium protection switch circuit via a wire, and the output side of the lithium protection switch circuit is connected to the power input terminal of the power management module via a wire.
[0026] Preferably, the lithium protection chip circuit is also electrically connected to the battery module to collect signals from the battery module. In this embodiment, the lithium protection chip circuit is also electrically connected to the battery module to collect signals from the battery module. This solves the technical problem of how to maintain the original battery status monitoring function of the lithium protection module while realizing the safety disconnection function, and further increases the monitoring electrical connection between the lithium protection chip circuit and the battery module (usually connected to the positive and negative terminals or the middle tap of the battery). This is not the main power supply channel, but an auxiliary channel for signal acquisition. This structure enables the lithium protection chip circuit, as a processing unit, to continuously acquire key parameter signals such as battery voltage and temperature, maintaining the core original protection functions of the lithium protection module (such as overcharge, over-discharge, overcurrent, and short circuit protection). The decisions of these protection functions depend on the real-time acquisition of battery signals.
[0027] Preferably, the power supply cut-off control module includes a switching circuit and a lithium protection module; the switching circuit is in an on state when the safety mode operation signal is not generated to control the connection between the battery module and the lithium protection module, so that the power supply path of the battery module to the power management module through the switching circuit and the lithium protection module is turned on; after the safety mode operation signal is generated, the switching circuit receives the generated safety mode operation signal and controls the connection between the battery module and the lithium protection module to disconnect according to the received safety mode operation signal, so that the power supply path of the battery module to the power management module through the switching circuit and the lithium protection module is disconnected.
[0028] In this embodiment, the power supply cut-off control module includes a switching circuit and a lithium protection module. Under the control of the safety mode operation signal, the switching circuit directly disconnects the connection between the battery module and the lithium protection module, solving the technical problem of how to completely cut off the power supply channel without modifying the internal circuit of the existing lithium protection module. In this embodiment, the switching circuit is connected in series between the battery module and the lithium protection module. Its control terminal receives an electrical signal from the safety mode control switch and acts directly according to the signal to physically disconnect or connect the entire current path from the battery module to the lithium protection module, allowing the user to completely cut off the power supply channel. Since the switching circuit is located before the lithium protection module, once disconnected, the lithium protection module itself loses the power signal for charging and discharging, and the power management module is powered off. This structure reduces the need to modify the lithium protection module, is compatible with standard, fixed-function lithium protection chips and circuits on the market, and only requires an external power switching circuit, providing greater design flexibility. It should be noted that when implementing the switching circuit, those skilled in the art can use different mature solutions in the prior art, such as relay circuits or MOSFET circuits, which will not be elaborated in this embodiment.
[0029] Preferably, the lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection switch circuit is electrically connected to the switch circuit, the power management module, and the lithium protection chip circuit, respectively. The switch circuit is electrically connected to the battery module. The lithium protection chip circuit is also electrically connected to the battery module to collect signals from the battery module.
[0030] In this embodiment, the lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection switch circuit is electrically connected to the switch circuit, the power management module, and the lithium protection chip circuit, respectively. The switch circuit is also electrically connected to the battery module. This solves the technical problem of clearly defining and reconstructing the energy flow and signal flow between modules in schemes using external switch circuits, ensuring that both the safety cut-off function and the lithium protection function operate normally. The switch circuit can act as a master switch connected in series on the battery module's output bus. Specifically, the input terminal of the switch circuit is directly electrically connected to the battery module to obtain all battery power; its output terminal is electrically connected to the lithium protection switch circuit, becoming the sole energy source for the lithium protection module and even the entire subsequent circuit. This means that the switch circuit plays the role of a primary switch, and its on / off state directly determines whether the entire subsequent circuit system (including the lithium protection module and the power management module) has high-power charging and discharging signals. The lithium protection switch circuit is downstream of the switch circuit, connected to the upstream switch circuit to obtain electrical energy, connected to the downstream power management module to supply it with power, and connected to the lithium protection chip circuit to receive its control signals. This connection defines a new role for the lithium-ion protection switch circuit in this architecture: it is a secondary switch controlled by the lithium-ion protection chip, primarily responsible for executing the chip's signals after the circuit is powered on, implementing protective switching for overcharge, over-discharge, and overcurrent. However, its switching authority is lower than that of the main switch circuit, ensuring absolute priority and thoroughness of the safety mode. When the user triggers the safety mode, this primary main switch immediately and physically cuts off the power supply to the entire device. Its action is independent of and takes precedence over the state of any other circuit (including the lithium-ion protection module), ensuring 100% reliability of the safety mode execution. Simultaneously, this structure maintains the integrity of the lithium-ion protection function. When the main switch is closed, the lithium-ion protection module is powered on, and its chip monitors the battery through an independent sampling line, fulfilling its traditional protection responsibilities by controlling the secondary switch circuit.
[0031] Preferably, the safety mode control switch is an external mechanical button switch or an external touch switch. In this embodiment, the safety mode control switch is an external mechanical button switch or an external touch switch, which can solve the technical problem of how to provide reliable and diverse human-computer interaction methods to trigger the safety mode. Mechanical button switches typically generate signals through physical spring force and the on / off state of metal contacts. Their structural characteristics are clear tactile feedback, reliable operation, and low cost. Touch switches can use principles such as capacitive sensing. Their structural characteristics are no mechanical moving parts, good sealing, and aesthetics. Regardless of the form, they can serve as physical devices installed on the power bank casing. Users operate them through direct physical contact (pressing or touching), thereby generating an electrical signal (safety mode operation signal). This provides users with safety mode control while also offering different operating experiences and product appearance options.
[0032] It should be noted that the above embodiments are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A portable power bank based on safety mode control, characterized in that, include: A safety mode control switch is disposed on the housing of the power bank and is used to generate a safety mode operation signal when the user operates it. A battery module, which is disposed inside the casing of the power bank and serves as the charging and discharging power source for the power bank; A power management module is installed inside the casing of the power bank and is used to manage the battery module. The power supply channel between the power management module and the battery module is opened when the safe mode operation signal is not generated. A power supply cut-off control module is installed inside the housing of the power bank. It is used to receive the safety mode operation signal and, based on the received safety mode operation signal, control the power supply channel between the battery module and the power management module to be disconnected.
2. The mobile power bank based on safety mode control as described in claim 1, characterized in that, The power supply cut-off control module includes a lithium protection module, which is used to receive the safety mode operation signal and, based on the received safety mode operation signal, control the power supply channel between the battery module and the power management module to be disconnected.
3. The mobile power supply based on safety mode control as described in claim 2, characterized in that, The lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection chip circuit is used to receive the safety mode operation signal and generate a power supply cut-off control signal upon receiving the safety mode operation signal. The power supply cut-off control signal is transmitted to the lithium protection switch circuit through the lithium protection chip circuit. The lithium protection switch circuit receives the power supply cut-off control signal and controls the power supply channel between the battery module and the power management module to be disconnected according to the received safety mode operation signal.
4. The mobile power supply based on safety mode control as described in claim 3, characterized in that, The lithium protection chip circuit is electrically connected to the safety mode control switch and to the lithium protection switch circuit; the lithium protection switch circuit is electrically connected to the power management module and to the battery module.
5. The mobile power supply based on safety mode control as described in claim 4, characterized in that, The lithium protection chip circuit is also electrically connected to the battery module to collect signals from the battery module.
6. The mobile power supply based on safety mode control as described in claim 1, characterized in that, The power supply cut-off control module includes a switching circuit and a lithium protection module; the switching circuit is in the open state when the safe mode operation signal is not generated to control the connection between the battery module and the lithium protection module, so that the power supply path of the battery module to the power management module through the switching circuit and the lithium protection module is opened; The switching circuit receives the generated safety mode operation signal after it is generated and controls the connection between the battery module and the lithium protection module to disconnect according to the received safety mode operation signal, thereby disconnecting the power supply path of the battery module to the power management module through the switching circuit and the lithium protection module.
7. The mobile power supply based on safety mode control as described in claim 6, characterized in that, The lithium protection module includes a lithium protection chip circuit and a lithium protection switch circuit. The lithium protection switch circuit is electrically connected to the switch circuit, the power management module, and the lithium protection chip circuit, respectively. The switch circuit is electrically connected to the battery module.
8. The mobile power supply based on safety mode control as described in claim 7, characterized in that, The lithium protection chip circuit is also electrically connected to the battery module to collect signals from the battery module.
9. The mobile power bank based on safety mode control as described in any one of claims 1-8, characterized in that, The safety mode control switch is an external mechanical button switch, or the safety mode control switch is an external touch switch.