External battery charging safety protector
By designing an external battery charging safety protector, using multiple sensors and control units to monitor the battery status in real time, the problems of thermal runaway and safety hazards during the battery charging and discharging process are solved, and the safety protection and life of the battery are achieved.
Patent Information
- Application Number
- CN202421190495.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The prior art cannot effectively detect and protect batteries during the charging and discharging of batteries, especially in the use of lithium batteries and lead-acid batteries, which have problems of thermal runaway and safety hazards.
An external battery charging safety protector is designed, including a temperature sensor, a remote control circuit breaker, a processor unit, a timer, a current sensor, a voltage sensor and a short circuit protector. Through the coordinated work of these components, the temperature, current and voltage of the battery are monitored in real time, and the electrical connection is disconnected in time when abnormal conditions are detected to protect the battery safety.
It effectively prevents thermal runaway and safety accidents during the charging and discharging process, ensures the safety and life of the battery, and is suitable for all types of batteries, including lithium batteries and lead-acid batteries.
Smart Images
Figure CN223039663U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery charging protection, and more particularly, to an external battery charging safety protector. Background Art
[0002] Currently, there are two existing methods for charging and discharging protection of batteries. One is to simply use a 220V timing socket, which only simply controls the charging time and cuts off the power when the time is up. It has no knowledge of the battery state during that time and cannot detect or protect against any battery problems during the charging process.
[0003] The other is a built-in protection board dedicated to lithium batteries. Although it has relatively good protection functions, since it is inside the battery pack, it cannot dissipate heat. When used with a large current, due to the heat generated by the protection board, it will generate high temperatures locally, thus affecting the life and safety of the battery.
[0004] For lead-acid batteries, since they are modular, for example, a 48V battery is composed of 4 12V batteries, there is currently no protection at all. If a built-in protection board is used, not only does it require modifying the structure of the battery pack, but it is also relatively difficult to find a suitable place to install it. Especially for some electric vehicles, there is even no outer shell for the battery pack. Summary of the Utility Model
[0005] The content part of this application is used to briefly introduce concepts, which will be described in detail in the subsequent detailed implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.
[0006] To solve the technical problems mentioned in the above background art part, some embodiments of this application provide an external battery charging safety protector, including: a protector body, a first connector, a second connector, a first wire, and a second wire; the first connector is used for plugging into the battery jack, and the second connector is used for plugging into the charger jack; the first wire electrically connects the first connector to the protector body, and the second wire electrically connects the second connector to the protector body; the protector body is used to control the electrical connection and disconnection of the first wire and the second wire.
[0007] Furthermore, a temperature sensor is provided in the first plug; a remote control circuit breaker is provided in the protector body; the remote control circuit breaker is signal-connected to the temperature sensor; the temperature sensor is used to directly or indirectly detect the temperature of the battery; the remote control circuit breaker is used to control the on-off state of the first wire and the second wire.
[0008] Further, the first connector includes an insulating housing and a conductive component; the temperature sensor is disposed in the insulating housing, and the probe of the temperature sensor is in insulated contact with the conductive component.
[0009] Further, the conductive component includes a positive plug, a negative plug, and a ground plug; the probe of the temperature sensor is disposed at the ground plug and is in insulated contact with the ground plug.
[0010] Further, a processor unit is further disposed in the protector body; the processor unit is in signal connection with the temperature sensor, and the processor unit is in signal connection with the remote control circuit breaker; the processor unit is configured to set a preset temperature and receive real-time temperature information of the temperature sensor; the processor unit is further configured to cause the remote control circuit breaker to control the first wire and the second wire to be open when the real-time temperature information is higher than the preset temperature.
[0011] Further, a timer is further disposed in the protector body; the timer is in signal connection with the processor unit.
[0012] Further, a current sensor is further disposed in the protector body, and the current sensor is in signal connection with the processor unit.
[0013] Further, a voltage sensor is further disposed in the protector body, and the voltage sensor is in signal connection with the processor unit.
[0014] Further, a short-circuit protector is further disposed in the protector body, and the short-circuit protector is in signal connection with the remote control circuit breaker.
[0015] Further, a display unit is further disposed on the protector body, and the display unit is in signal connection with the processor unit.
[0016] The beneficial effects of the present application are as follows: An external charge and discharge protector is adopted, and the system integrates a current voltage power sampling circuit and a charge and discharge switch; because the input / output is provided with an adapter, it can be conveniently connected between the charger and the battery for charging, or between the discharge port of the electric vehicle and the battery for discharging. Ordinary users can directly and quickly apply it to the current electric vehicle, preventing thermal runaway. Once there are problems such as overvoltage, overcurrent, overheating or short circuit when using the wrong charger, it can be protected in time to avoid accidents, enabling the electric vehicle to charge safely and discharge safely. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objects, and advantages of this application more obvious. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation of this application.
[0018] In addition, throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and the elements and components are not necessarily drawn to scale.
[0019] In the drawings:
[0020] Figure 1 is the overall schematic diagram according to an embodiment of the present application.
[0021] Description of the drawings: 1. Protector body; 2. First connector; 3. Second connector; 4. First conductive wire; 5. Second conductive wire. Detailed Description of the Invention
[0022] Embodiments of the present disclosure will be described in more detail below with reference to the drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.
[0023] In addition, it should be noted that for the sake of convenience of description, only the parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.
[0024] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.
[0025] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".
[0026] The present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.
[0027] Referring to Figure 1 ,
[0028] An external battery charging safety protector includes: a protector body, a first connector, a second connector, a first conductive wire, and a second conductive wire.
[0029] The first connector is used for plugging into the battery jack, and the second connector is used for plugging into the charger jack. The first conducting wire electrically connects the first connector to the protector body, and the second conducting wire electrically connects the second connector to the protector body. Both the first conducting wire and the second conducting wire are conducting wire bodies sleeved with insulating rubber. The protector body is a box body, and the protector body is used to control the electrical connection and disconnection of the first conducting wire and the second conducting wire. During the battery charging process, when the battery is in danger, the protector body can timely disconnect the first conducting wire and the second conducting wire, stop charging, and protect the battery.
[0030] Through the external safety protector, it is convenient for ordinary consumers to use. It can not only provide safety protection for lead-acid batteries in the existing market, but also provide secondary protection for lithium batteries, truly solving the safety problems of safe charging and discharging of electric vehicle batteries and preventing the occurrence of fire and explosion accidents during charging and discharging.
[0031] Specifically, a temperature sensor is provided in the first plug. A remote control circuit breaker is provided in the protector body, and the remote control circuit breaker is signal-connected to the temperature sensor. The temperature sensor is used to directly or indirectly detect the temperature of the battery. The remote control circuit breaker is used to control the on-off state of the first conducting wire and the second conducting wire.
[0032] More specifically, a processor unit is also provided in the protector body. The processor unit is a processor. The processor unit is signal-connected to the temperature sensor, and the processor unit is signal-connected to the remote control circuit breaker. Thus, the temperature sensor is signal-connected to the remote control circuit breaker through the processor unit. The processor unit is used to set a preset temperature and receive the real-time temperature information of the temperature sensor. The processor unit is also used to make the remote control circuit breaker control the first conducting wire and the second conducting wire to be open when the real-time temperature information is higher than the preset temperature. Exactly speaking, the processor unit can send a first control signal and a second control signal to the remote control circuit breaker. When the real-time temperature information is higher than the preset temperature, the processor unit sends the first control signal to the remote control circuit breaker. After receiving the first control signal, the remote control circuit breaker disconnects the first conducting wire and the second conducting wire; when the real-time temperature information is lower than the preset temperature, the processor unit sends the second control signal to the remote control circuit breaker. After receiving the second control signal, the remote control circuit breaker keeps the first conducting wire and the second conducting wire in an electrically connected state.
[0033] Specifically, the first connector includes an insulating housing and a conductive component; the temperature sensor is disposed in the insulating housing, and the probe of the temperature sensor is in insulated contact with the conductive component. More specifically, the conductive component includes a positive plug, a negative plug, and a ground plug. The probe of the temperature sensor is in insulated contact with one of the positive plug, the negative plug, and the ground plug. In this embodiment, preferably, the probe of the temperature sensor is disposed at the ground plug and is in insulated contact with the ground plug. Thus, the idle hole on the connector is utilized for temperature testing, realizing remote battery temperature acquisition and enabling timely temperature protection. Among them, the probe of the temperature sensor can be in insulated contact with the ground plug by being separated by insulating rubber or by indirect contact through air.
[0034] Specifically, a timer is further disposed in the protector body, and the timer is signal-connected to the processor unit. The processor unit is further configured to preset a timing time, and the timer is used to record in real time the real-time time when the first plug is inserted into the battery and the second plug is inserted into the charger at the same time. If the real-time time is higher than the timing time, the processor unit sends a first control signal to the remote control circuit breaker, and the remote control circuit breaker disconnects the first wire and the second wire.
[0035] Specifically, a current sensor is further disposed in the protector body, and the current sensor is signal-connected to the processor unit. The current sensor is used to detect the current in the first wire and the second wire and send the detected real-time current to the processor unit. The processor unit is further configured to set a preset current. When the real-time current is greater than the preset current, the processor unit sends the first control signal to the remote control circuit breaker, and the remote control circuit breaker disconnects the first wire and the second wire.
[0036] Specifically, a voltage sensor is further disposed in the protector body, and the voltage sensor is signal-connected to the processor unit. The voltage sensor is used to detect the voltage in the first wire and the second wire and send the detected real-time voltage to the processor unit. The processor unit is further configured to set a preset voltage. When the real-time voltage is greater than the preset voltage, the processor unit sends the first control signal to the remote control circuit breaker, and the remote control circuit breaker disconnects the first wire and the second wire.
[0037] Specifically, a short-circuit protector is further disposed in the protector body, and the short-circuit protector is signal-connected to the remote control circuit breaker. The short-circuit protector is used to detect whether the first wire and the second wire are short-circuited. If the first wire and the second wire are short-circuited, the short-circuit protector sends a short-circuit signal to the processor unit. After receiving the short-circuit signal, the processor unit sends the first control signal to the remote control circuit breaker, and the remote control circuit breaker disconnects the first wire and the second wire.
[0038] Specifically, a display unit is further provided on the protector body, and the display unit is signal-connected to the processor unit. The display unit is used to display the first display information, the second display information, the third display information, the third display information, the fourth display information, and the fifth display information. The display unit is a display screen.
[0039] When the real-time temperature information is higher than the preset temperature, the processor unit generates an over-temperature signal and sends the over-temperature signal to the display unit. After receiving the over-temperature signal, the display unit outputs the first display information outward.
[0040] When the real-time time is higher than the scheduled time, the processor unit generates a timeout signal and sends the timeout signal to the display unit. After receiving the timeout signal, the display unit outputs the second display information outward.
[0041] When the real-time current is greater than the preset current, the processor unit generates a current overload signal and sends the current overload signal to the display unit. After receiving the current overload signal, the display unit outputs the third display information outward.
[0042] When the real-time voltage is greater than the preset voltage, the processor unit generates a voltage overload signal and sends the voltage overload signal to the display unit. After receiving the voltage overload signal, the display unit outputs the fourth display information outward.
[0043] The short-circuit protector sends a short-circuit signal to the processor unit, the processor generates a danger signal, and sends the danger signal to the display unit. After receiving the danger signal, the display unit outputs the fifth display information outward.
[0044] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the embodiments of the present disclosure that have similar functions.
Claims
1. An external battery charging safety protector, characterized in that: include: A protector body, a first connector, a second connector, a first conductive wire, and a second conductive wire; The first connector is used to be plugged into a battery socket, and the second connector is used to be plugged into a charger socket; The first conductive wire electrically connects the first connector to the protector body, and the second conductive wire electrically connects the second connector to the protector body; The protector body is used to control the electrical connection and disconnection of the first conductive line and the second conductive line; A temperature sensor is arranged in the first joint; a remote control circuit breaker is arranged in the protector body; the remote control circuit breaker is connected to the temperature sensor signal; The temperature sensor is used to directly or indirectly detect the temperature of the battery; The remote-controlled circuit breaker is used to control the opening and closing states of the first conductive line and the second conductive line.
2. The external battery charging safety protector according to claim 1, characterized in that: The first joint includes an insulating shell and a conductive component; the temperature sensor is arranged in the insulating shell, and a probe of the temperature sensor is insulated and in contact with the conductive component.
3. The external battery charging safety protector according to claim 2, characterized in that: The conductive component comprises a positive plug, a negative plug and a grounding plug; the probe of the temperature sensor is arranged at the grounding plug and is in insulated contact with the grounding plug.
4. The external battery charging safety protector according to claim 3, characterized in that: A processor unit is also provided in the protector body; The processor unit is connected to the temperature sensor signal, and the processor unit is connected to the remote control circuit breaker signal; The processor unit is used to set a preset temperature and receive real-time temperature information from a temperature sensor; The processor unit is further configured to enable the remote-controlled circuit breaker to control the first conductive line and the second conductive line to be disconnected when the real-time temperature information is higher than the preset temperature.
5. The external battery charging safety protector according to claim 4, characterized in that: A timer is also arranged in the protector body; the timer is connected to the processor unit signal.
6. The external battery charging safety protector according to claim 5, characterized in that: A current sensor is also arranged in the protector body, and the current sensor is signal-connected to the processor unit.
7. The external battery charging safety protector according to claim 6, characterized in that: A voltage sensor is also arranged in the protector body, and the voltage sensor is signal-connected to the processor unit.
8. The external battery charging safety protector according to claim 7, characterized in that: A short circuit protector is also arranged in the protector body, and the short circuit protector is connected to the remote control circuit breaker signal.
9. The external battery charging safety protector according to claim 8, characterized in that: A display unit is also provided on the protector body, and the display unit is signal-connected to the processor unit.