Control system of discharge port and battery
Through the combination of magnets, induction circuits and controllers, stable control of charging ports in humid or multi-saltitude environments is achieved, solving the problem of unstable control of external enable detection ports in these environments in the prior art, ensuring that The stability of the charging port.
Patent Information
- Application Number
- CN202420686024.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-03
AI Technical Summary
In the prior art, the external enable detection port is prone to contact the battery shrapnel in a humid or multi-saltitude environment, resulting in electrolytic corrosion, resulting in unstable control of the on-off state of the charging port and prone to false detection.
The combination of magnets, induction circuits and controllers is used to stimulate the magnetic field to induce high-level signals through the magnets, and control the on-off state of the charging port, avoiding the impact of the external environment on the charging port control.
In humid or multi-saltitude environments, the non-contact cooperation between the magnet and the induction circuit ensures the stable opening of the charging port and improves the control stability of the on-off state of the charging port.
Smart Images
Figure CN222215233U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery technology, and in particular to a control system of a discharge port and a battery. Background Art
[0002] In the prior art, many BMS (Battery Management System) use a contact enable detection port to control the on / off state of the discharge port. The enable detection port is external, and when the charging port receives a high level signal from the enable detection port, the charging port is turned on.
[0003] However, when the external environment is a humid environment or a saline-alkali environment, the external enable detection port is prone to contact with the battery shrapnel and electrolytic corrosion occurs, resulting in poor contact of the enable detection port; the external enable detection port is also prone to micro-conduction of the enable detection port, resulting in false detection of the enable detection port.
[0004] The control method of the charging port in the prior art is greatly affected by the environment, and the external enabling detection port cannot stably complete the control of the on-off state of the charging port. Utility Model Content
[0005] The present application provides a control system for a discharge port and a battery to solve related technical problems in the prior art.
[0006] In a first aspect, the present application provides a control system for a discharge port, the system comprising a magnet, an induction circuit and a controller;
[0007] The magnet is disposed on one side of the induction circuit; the magnet is used to excite a magnetic field on one side of the induction circuit;
[0008] The first end of the induction circuit is connected to an external power supply, the second end of the induction circuit is grounded, and the output end of the induction circuit is connected to the input end of the controller; the induction circuit is used to sense a magnetic field, and when the magnet approaches the induction circuit, a high-level signal input from the external power supply is output to the controller;
[0009] The input end of the controller is connected to the output end of the sensing circuit, and the output end of the controller is connected to the discharge port; the controller is used to open the discharge port when receiving the high level signal.
[0010] In a second aspect, the present application provides a battery, comprising a control system for a discharge port as described in the first aspect above.
[0011] The above-mentioned technical solution provided by the embodiment of the present application has the following advantages over the prior art: the technical solution provided by the present application controls the on-off state of the charging port through the cooperation of a magnet, an induction circuit and a controller. Compared with the control scheme of the charging port by an external high-level enable detection port in the prior art, the technical solution provided by the present application controls the on-off state of the charging port by controlling whether the induction circuit inputs a high-level signal to the controller through a non-contact magnet, thereby avoiding the influence of the external environment on related components; at the same time, even if the technical solution provided by the present application works in an external humid environment or a saline-alkali environment, the external humid environment or the saline-alkali environment cannot affect the properties of the magnet. When the magnet is close to the induction circuit, the charging port can be stably opened, effectively improving the stability of the control of the on-off state of the charging port. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0014] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0015] Figure 1 A schematic diagram of the structure of a control system of a discharge port provided in one embodiment of the present application.
[0016] Figure 2 A schematic structural diagram of a control system of a discharge port provided in another embodiment of the present application.
[0017] Figure 3 A schematic structural diagram of a control system of a discharge port provided in yet another embodiment of the present application.
[0018] Explanation of the reference numerals: 1, magnet; 2, induction circuit; 3, controller; 21, Hall element; 22, switch unit; U, unipolar Hall switch; Q, PMOS tube; R1: first resistor; R2: second resistor; R3: third resistor; R4: fourth resistor. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0020] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0021] In order to solve the technical problem in the prior art that the control method of the on-off state of the charging port is greatly affected by the external environment and it is difficult to stably control the on-off state of the charging port, the present application provides a control system and a battery for a discharge port, which can effectively improve the stability of the control of the on-off state of the charging port and avoid the influence of the external environment on the control of the on-off state of the charging port.
[0022] Figure 1 A schematic diagram of the structure of a control system of a discharge port provided in an embodiment of the present application.
[0023] Reference Figure 1 , a control system of a discharge port provided in the present application includes a magnet 1, an induction circuit 2 and a controller 3;
[0024] The magnet 1 is disposed on one side of the induction circuit 2; the magnet 1 is used to excite a magnetic field on one side of the induction circuit 2;
[0025] The first end of the induction circuit 2 is connected to the external power supply, the second end of the induction circuit 2 is grounded, and the output end of the induction circuit 2 is connected to the input end of the controller 3; the induction circuit 2 is used to sense the magnetic field, and when the magnet 1 approaches the induction circuit 2, the high level signal input from the external power supply is output to the controller 3;
[0026] The input end of the controller 3 is connected to the output end of the sensing circuit 2 , and the output end of the controller 3 is connected to the discharge port; the controller 3 is used to open the discharge port when receiving a high level signal.
[0027] Specifically, the present application provides a control system for a charging port that is disposed inside a battery, wherein the induction circuit 2 and the controller 3 are connected to the management system of the battery, and the magnet 1 is independently disposed outside the management system of the battery through a mechanical device.
[0028] The mechanical device connected to the magnet 1 can control the magnet 1 to be close to or close to the induction circuit 2. The present application does not limit the specific structure of the mechanical device, and only requires that the mechanical device can complete the movement of the position of the magnet 1.
[0029] The sensing circuit 2 and the controller 3 are both powered by the same external power supply, which may be the power supply of the battery management system, an independent external power supply, or the battery itself, which is not limited here.
[0030] In the technical solution provided in the present application, when the user wants to open the charging port of the battery, the magnet 1 is controlled to be close to the induction circuit 2. As the distance between the magnet 1 and the induction circuit 2 increases, the magnetic flux of the magnet 1 at the induction circuit 2 decreases. When the amount of the magnet 1 at the induction circuit 2 is less than a certain value, the induction circuit 2 outputs the high-level signal input by the external power supply to the controller 3 through the output end of the induction circuit 2. After receiving the high-level signal, the controller 3 controls the charging port to open.
[0031] Reference Figure 2 In a feasible embodiment of the present application, the sensing circuit 2 includes a Hall element 21 and a switch unit 22;
[0032] The first end of the Hall element 21 is connected to the external power supply and the first end of the switch unit 22 respectively, the second end of the Hall element 21 is grounded and connected to the second end of the switch unit 22, and the third end of the Hall element 21 is connected to the third end of the switch unit 22; the Hall element 21 is used to sense the magnetic field excited by the magnet 1, and control the on-off state of the switch unit 22 according to the magnetic field excited by the magnet 1;
[0033] The first end of the switch unit 22 is connected to an external power supply, the second end of the switch unit 22 is grounded and connected to the input end of the controller 3 as the output end of the sensing circuit 2, and the third end of the switch unit 22 is connected to the third end of the Hall element 21; the switch unit 22 is used to control the high-level signal input or not input to the controller 3 according to its own on-off state.
[0034] Specifically, the Hall element 21 is used to sense the magnetic field generated by the magnet 1. The first end of the Hall element 21 is the power supply end of the Hall element 21, which is connected to the external power supply; the second end of the Hall element 21 is the grounding end of the Hall element 21, which is connected to the floating ground; the third end of the Hall element 21 is the output end of the Hall element 21, which is connected to the third end of the switch unit 22.
[0035] The switch unit 22 is used to control the high-level signal of the external power supply to be input into the controller 3 or not according to its own on-off state. The first end of the switch unit 22 serves as the power supply end of the switch unit 22 and is connected to the external power supply; the second end of the switch unit 22 serves as the grounding end and the output end of the switch unit 22 and is respectively connected to the floating ground and the input end of the controller 3; the third end of the switch unit 22 serves as the input end of the switch unit 22 and is connected to the third end of the Hall element 21.
[0036] The magnet 1 is arranged on one side of the Hall element 21 in the induction circuit 2. When the magnet 1 is close enough to the Hall element 21, due to the Hall effect, the Hall element 21 outputs a low level at the output end of the Hall element 21; the switch unit 22 is turned on when the input end of the switch unit 22 is at a low level, so that the high level signal input by the external power supply can be input to the input end of the controller 3 through the switch unit 22; after receiving the high level signal, the controller 3 controls the charging port to open.
[0037] Reference Figure 3 In a feasible embodiment of the present application, the switch unit 22 includes a PMOS tube Q;
[0038] The source of the PMOS tube Q serves as the first end of the switch unit 22 and is connected to the external power supply and the first end of the Hall element 21. The drain of the PMOS tube Q serves as the second end of the switch unit 22 and is grounded and respectively connected to the input end of the controller 3 and the second end of the Hall element 21. The gate of the PMOS tube Q serves as the third end of the switch unit 22 and is connected to the third end of the Hall element 21.
[0039] Specifically, based on the above embodiment, when the magnet 1 is close to the Hall element 21, the Hall element 21 outputs a low level at the output end of the Hall element 21, and the gate voltage of the PMOS tube Q is pulled low. When the gate voltage of the PMOS tube Q is lower than the threshold voltage, the source and drain of the PMOS tube Q are connected, and the high level signal input by the external power supply is input to the input end of the controller 3 through the turned-on PMOS tube Q.
[0040] In a feasible embodiment of the present application, the switch unit 22 may also include a PNP transistor;
[0041] The base of the PNP transistor serves as the first end of the switch unit 22, connecting the external power supply and the first end of the Hall element 21; the collector of the PNP transistor serves as the second end of the switch unit 22, is grounded and respectively connected to the input end of the controller 3 and the second end of the Hall element 21; the emitter of the PNP transistor serves as the third end of the switch unit 22, connecting the third end of the Hall element 21.
[0042] In other feasible embodiments of the present application, the switch unit 22 can also be a logic circuit composed of multiple electronic components, which only needs to meet the requirement that when the input end of the switch unit 22 is at a low potential, the switch unit 22 is turned on so that the high-level signal input by the external power supply can be output to the input end of the controller 3.
[0043] In a feasible embodiment of the present application, the Hall element 21 is a unipolar Hall switch U.
[0044] Based on this embodiment, when the Hall element 21 is a unipolar Hall switch U, the front side of the Hall element 21 faces the S pole of the magnet 1. Also based on this embodiment, when the Hall element 21 is a unipolar Hall switch U, the model of the Hall element 21 may be AH3144.
[0045] In other feasible embodiments of the present application, the Hall element 21 can also be a bipolar Hall switch or an omnipolar Hall switch, and it is only necessary that when the magnet 1 approaches the Hall element 21, the Hall element 21 outputs a low level at the output end of the Hall element 21.
[0046] It should be noted that for different types of Hall elements 21, the orientation of the magnetic pole of the magnet 1 needs to be set differently. For example, when the Hall element 21 is a bipolar Hall switch, it is not necessary to specify whether the S pole of the magnet 1 faces the front of the Hall element 21 or the N pole faces the front of the Hall element 21. Regardless of whether the S pole of the magnet 1 faces the front of the Hall element 21 or the N pole faces the front of the Hall element 21, the bipolar Hall switch outputs a low level at the output end of the Hall element 21 when the magnet 1 approaches.
[0047] Continue to refer to Figure 3 In a feasible embodiment of the present application, the sensing circuit 2 further includes a first resistor R1;
[0048] A first end of the first resistor R1 is connected to an external power source and a first end of the switch unit 22 , respectively, and a second end of the first resistor R1 is connected to a first end of the Hall element 21 .
[0049] Continue to refer to Figure 3 In a feasible embodiment of the present application, the sensing circuit 2 further includes a second resistor R2;
[0050] The first end of the second resistor R2 is connected to the external power supply and the first end of the switch unit 22 , respectively. The second end of the second resistor R2 is connected to the third end of the Hall element 21 and the third end of the switch unit 22 , respectively.
[0051] Continue to refer to Figure 3 In a feasible embodiment of the present application, the sensing circuit 2 further includes a third resistor R3;
[0052] A first end of the third resistor R3 is connected to the third end of the switch unit 22 , and a second end of the third resistor R3 is connected to the third end of the Hall element 21 .
[0053] Continue to refer to Figure 3 In a feasible embodiment of the present application, the sensing circuit 2 further includes a fourth resistor R4;
[0054] A first end of the fourth resistor R4 is connected to the second end of the switch unit 22 and the input end of the controller 3 respectively, and a second end of the fourth resistor R4 is grounded.
[0055] Specifically, the first resistor R1 , the second resistor R2 , the third resistor R3 and the fourth resistor R4 all function to limit the current in the loop where the resistors are located, thereby preventing overcurrent from causing a fault in the sensing circuit 2 .
[0056] In a feasible embodiment of the present application, the controller 3 can be an MCU (Microcontroller Unit), which includes multiple signal input terminals. One of the signal input terminals of the controller 3 is connected to the output terminal of the sensing circuit 2. When the signal input terminal receives a high-level signal, the controller 3 controls the charging port of the battery to open.
[0057] Continue to refer to Figure 3 In a feasible embodiment of the present application, the signal input terminal of the controller 3 for receiving the high-level signal of the sensing circuit 2 may be the MCU_DET port of the controller 3 .
[0058] Through the technical solution provided by the present application, the on-off state of the charging port is controlled by the cooperation of the magnet 1, the induction circuit 2 and the controller 3. Compared with the control scheme of the charging port by the external high-level enable detection port in the prior art, the technical solution provided by the present application controls the on-off state of the charging port by controlling whether the induction circuit 2 inputs a high-level signal to the controller 3 through the non-contact magnet 1, thereby avoiding the influence of the external environment on related components; at the same time, even if the technical solution provided by the present application works in an external humid environment or a saline-alkali environment, the external humid environment or the saline-alkali environment cannot affect the properties of the magnet 1. When the magnet 1 is close to the induction circuit 2, the charging port can be stably opened, which effectively improves the stability of the control of the on-off state of the charging port.
[0059] In addition, an embodiment of the present application further provides a battery, which includes a control system of a charging port described in each of the above embodiments.
[0060] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0061] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A control system for a discharge port, characterized in that: The system includes a magnet, an induction circuit, and a controller; The magnet is disposed on one side of the induction circuit; the magnet is used to excite a magnetic field on one side of the induction circuit; The first end of the induction circuit is connected to an external power supply, the second end of the induction circuit is grounded, and the output end of the induction circuit is connected to the input end of the controller; the induction circuit is used to sense a magnetic field, and when the magnet approaches the induction circuit, a high-level signal input from the external power supply is output to the controller; The input end of the controller is connected to the output end of the induction circuit, and the output end of the controller is connected to the discharge port; The controller is used for opening the discharge port when receiving the high level signal.
2. The system according to claim 1, characterized in that The sensing circuit includes a Hall element and a switch unit; The first end of the Hall element is connected to an external power supply and a first end of the switch unit respectively, the second end of the Hall element is grounded and connected to the second end of the switch unit, and the third end of the Hall element is connected to the third end of the switch unit; the Hall element is used to sense the magnetic field excited by the magnet, and control the on-off state of the switch unit according to the magnetic field excited by the magnet; The first end of the switch unit is connected to an external power supply, the second end of the switch unit is grounded and connected to the input end of the controller as the output end of the sensing circuit, and the third end of the switch unit is connected to the third end of the Hall element; the switch unit is used to control the high-level signal to be input into the controller or not according to its own on-off state.
3. The system according to claim 2, characterized in that The switch unit includes a PMOS tube; The source of the PMOS tube serves as the first end of the switch unit and is connected to an external power supply and the first end of the Hall element. The drain of the PMOS tube serves as the second end of the switch unit and is grounded and respectively connected to the input end of the controller and the second end of the Hall element. The gate of the PMOS tube serves as the third end of the switch unit and is connected to the third end of the Hall element.
4. The system according to claim 2, characterized in that The switch unit includes a PNP transistor; The base of the PNP transistor serves as the first end of the switch unit and is connected to an external power supply and the first end of the Hall element. The collector of the PNP transistor serves as the second end of the switch unit and is grounded and respectively connected to the input end of the controller and the second end of the Hall element. The emitter of the PNP transistor serves as the third end of the switch unit and is connected to the third end of the Hall element.
5. The system according to claim 2, characterized in that The sensing circuit also includes a first resistor; The first end of the first resistor is connected to an external power source and the first end of the switch unit respectively, and the second end of the first resistor is connected to the first end of the Hall element.
6. The system according to claim 2, characterized in that The sensing circuit also includes a second resistor; The first end of the second resistor is respectively connected to an external power source and the first end of the switch unit, and the second end of the second resistor is respectively connected to the third end of the Hall element and the third end of the switch unit.
7. The system according to claim 2, characterized in that The sensing circuit further includes a third resistor; A first end of the third resistor is connected to the third end of the switch unit, and a second end of the third resistor is connected to the third end of the Hall element.
8. The system according to claim 2, characterized in that The sensing circuit further includes a fourth resistor; A first end of the fourth resistor is connected to the second end of the switch unit and the input end of the controller respectively, and a second end of the fourth resistor is grounded.
9. The system according to claim 2, characterized in that The Hall element is a unipolar Hall switch.
10. A battery, characterized in that: The battery comprises a control system for a discharge port as described in any one of claims 1-9.