Battery information monitoring circuit and electronic equipment

Abstract

The utility model provides a battery information monitoring circuit and electronic equipment. The battery information monitoring circuit comprises a control module and an information monitoring module, the information monitoring module comprises a plurality of information monitoring circuits, the information monitoring circuits are used for monitoring state information of a battery and sending the state information to the control module, and one information monitoring circuit monitors one kind of state information. According to the utility model, the battery can be monitored in all directions.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, specifically relate to a battery information monitoring circuit and electronic equipment. BACKGROUND

[0002] At present, most electronic equipment supports battery power supply, and with the user's requirement of endurance being higher and higher, the capacity of battery is also bigger and bigger, and the big capacity lithium battery also has the hidden danger of flammable and explosive, especially for the large electronic equipment such as electric vehicle, the monitoring of battery state is particularly important, and at present, there is no better method to monitor the battery comprehensively. UTILITY MODEL CONTENTS

[0003] The utility model provides a battery information monitoring circuit and electronic equipment, aims at solving the problem that the state information of battery cannot be monitored comprehensively at present.

[0004] Firstly, the utility model provides a battery information monitoring circuit, it includes control module and information monitoring module, the information monitoring module includes multiple information monitoring circuits, the information monitoring circuit is used for monitoring the state information of battery, and sends the state information to the control module, wherein, one information monitoring circuit monitors one state information.

[0005] Further, multiple information monitoring circuits include temperature detection circuit, pressure detection circuit, current detection circuit and voltage detection circuit, the temperature detection circuit is connected with the control module, is used for collecting the temperature information of battery, and sends the temperature information to the control module, the pressure detection circuit is connected with the control module, is used for collecting the pressure information of battery, and sends the pressure information to the control module, the current detection circuit is connected with the control module, is used for collecting the current information of battery, and sends the current information to the control module, the voltage detection circuit is connected with the control module, is used for collecting the voltage information of battery, and sends the voltage information to the control module.

[0006] Further, the temperature detection circuit includes temperature acquisition element, and the temperature acquisition element is used for collecting the temperature information of battery.

[0007] Further, the temperature detection circuit further includes temperature acquisition chip, and the temperature acquisition chip is connected with the temperature acquisition element and the control module respectively.

[0008] Further, the pressure detection circuit includes inductive bridge element, and the inductive bridge element is used for collecting the pressure information of battery.

[0009] Further, the pressure detection circuit further comprises a pressure acquisition chip, and the pressure acquisition chip is connected with the inductive bridge element and the control module respectively.

[0010] Further, the current detection circuit comprises a current detection circuit for acquiring current information of the battery.

[0011] Further, the current detection circuit comprises a current acquisition chip, and the current acquisition chip is connected with the current detection circuit and the control module respectively.

[0012] Further, the voltage detection circuit comprises a first operational amplifier and a second operational amplifier, the non-inverting input end of the first operational amplifier and the inverting input end of the second operational amplifier are connected with a load circuit of the electronic device, the inverting input end of the first operational amplifier and the non-inverting input end of the second operational amplifier are connected with a reference circuit, and the output ends of the first operational amplifier and the second operational amplifier are connected with the control module.

[0013] In a second aspect, the utility model also provides an electronic device, which comprises the battery information monitoring circuit.

[0014] The utility model discloses an electronic device comprising a battery information monitoring circuit, the battery information monitoring circuit comprises a control module and information monitoring module, and the information monitoring module comprises a plurality of information monitoring circuits, each information monitoring circuit can monitor one state information of a battery, and a plurality of information monitoring circuits can simultaneously monitor a plurality of state information of the battery, thereby realizing all -round monitoring of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0016] Figure 1 It is the block schematic diagram of the battery information monitoring circuit provided by an embodiment of the utility model;

[0017] Figure 2 It is the circuit diagram of the temperature detection circuit provided by an embodiment of the utility model;

[0018] Figure 3 It is the circuit diagram of the pressure detection circuit provided by an embodiment of the utility model;

[0019] Figure 4is a circuit diagram of the current detection circuit provided by an embodiment of the utility model;

[0020] Figure 5 is a circuit diagram of the voltage detection circuit provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] It should be understood that, when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components, and / or groups thereof.

[0023] It should also be understood that the terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the specification and the appended claims of the utility model, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms. It should be further understood that the term "and / or" used in the specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0024] In addition, the direction terms mentioned in the utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only the directions of the attached drawings and the state of product use. Therefore, the direction terms used are used to illustrate and understand the utility model, and are not intended to limit the utility model. In addition, in the drawings, structures similar or identical in structure are denoted by the same reference numerals.

[0025] Referring to Figures 1 to 5 , Figure 1 is a block schematic diagram of the battery information monitoring circuit provided by an embodiment of the utility model; Figure 2 is a circuit diagram of the temperature detection circuit 21 provided by an embodiment of the utility model; Figure 3 is a circuit diagram of the pressure detection circuit 22 provided by an embodiment of the utility model; Figure 4 is a circuit diagram of the current detection circuit 23 provided by an embodiment of the utility model; Figure 5It is the circuit diagram of the voltage detection circuit 24 provided by an embodiment of the utility model. As shown in Figure 1 The battery information monitoring circuit comprises a control module 10 and an information monitoring module 20; the information monitoring module 20 comprises a plurality of information monitoring circuits, the information monitoring circuits are used for monitoring the state information of the battery and sending the state information to the control module 10, wherein one information monitoring circuit monitors one state information.

[0026] The battery information monitoring circuit can be configured in any electronic device to monitor the state information of the battery in the electronic device, for example, the battery information monitoring circuit can be configured in an electric vehicle to monitor the state information of the lithium battery in the electric vehicle.

[0027] The battery information monitoring circuit can comprise a control module 10 and an information monitoring module 20; the control module 10 can comprise a control chip, which can be a logic control chip, used for judging whether to trigger a safety mechanism; the information monitoring module 20 can comprise a plurality of information monitoring circuits, which can be used for monitoring the current, voltage, temperature and pressure information of the battery. For example, the information monitoring module 20 can comprise four information monitoring circuits, one information monitoring circuit is used for monitoring the current information of the battery, one information monitoring circuit is used for monitoring the voltage information of the battery, one information monitoring circuit is used for monitoring the temperature information of the battery, and the last information monitoring circuit is used for monitoring the pressure information of the battery. It can be understood that the information monitoring module 20 is not limited to monitoring the above four state information, and one or more information monitoring circuits can be added according to the actual situation to monitor the corresponding state information.

[0028] In actual use, if an electric vehicle is configured with a battery information monitoring circuit, and the information monitoring module 20 of the battery information monitoring circuit comprises four information monitoring circuits for monitoring temperature information, pressure information, current information and voltage information respectively, the control module 10 can confirm the state of the battery according to different information and perform corresponding warning actions according to the state of the battery. For example, the control module 10 receives the temperature information and confirms whether the temperature of the battery is too high according to the temperature information; when the temperature of the battery exceeds a threshold value, a corresponding warning action can be triggered, for example, the power supply to the load is disconnected to protect the battery; in addition, gradient warning can also be performed, that is, when the temperature of the battery is in a certain interval, the control module 10 outputs information to remind the user that the battery temperature is high; when the temperature of the battery is in another interval, the control module 10 outputs alarm information to remind the user that the battery temperature is too high.

[0029] Generally, four gradient safety mechanisms can be provided, which are safety, warning, alarm and protection action. The safety means that the current state information of the battery is in a safe condition and can be normally used. The warning means that the state information of the battery is higher than the normal state information and can remind the user to pay attention to the state information of the battery. The alarm means that the state information of the battery is in an abnormal state. The protection action means that the control module 10 automatically triggers the protection action, for example, disconnecting the power supply to the load to protect the battery.

[0030] As a further embodiment, the plurality of information monitoring circuits include a temperature detection circuit 21, a pressure detection circuit 22, a current detection circuit 23 and a voltage detection circuit 24. The temperature detection circuit 21 is connected with the control module 10, used for collecting the temperature information of the battery and sending the temperature information to the control module 10. The pressure detection circuit 22 is connected with the control module 10, used for collecting the pressure information of the battery and sending the pressure information to the control module 10. The current detection circuit 23 is connected with the control module 10, used for collecting the current information of the battery and sending the current information to the control module 10. The voltage detection circuit 24 is connected with the control module 10, used for collecting the voltage information of the battery and sending the voltage information to the control module 10.

[0031] The temperature detection circuit 21 is used for collecting the temperature information and sending the temperature information to the control module 10. The control module 10 confirms whether the temperature of the battery is in a normal state according to the temperature information. An algorithm can be preset in the control module 10. The control module 10 can analyze the temperature of the battery in which interval by the algorithm, so as to execute corresponding actions. For example, four intervals can be provided. The first interval corresponds to a normal temperature. The second interval corresponds to a higher temperature. The third interval corresponds to a high temperature. When the temperature of the battery exceeds the maximum value of the third interval, it is the fourth interval, indicating that the battery is currently in a dangerous state. The control module 10 can execute corresponding protection actions. It can be understood that a plurality of temperature detection circuits 21 can be provided. Different temperature detection circuits 21 are used to obtain the temperature information of different regions of the battery, so as to accurately determine the temperature of the battery by the control module 10.

[0032] The pressure detection circuit 22 is used to collect the pressure information of the battery and send the pressure information to the control module 10. The control module 10 confirms the bulging pressure of the battery according to the pressure information, that is, confirms whether the current bulging condition of the battery is serious. Similarly, the control module 10 can be provided with an algorithm to analyze the pressure information to confirm the severity of the current bulging pressure of the battery. Preferably, the severity of the bulging pressure can be divided into normal, slight bulging, moderate bulging and serious bulging. Normal means that the battery does not have bulging, slight bulging means that the battery has slight bulging, moderate bulging means that the bulging condition of the battery is relatively serious, and serious bulging means that the battery has serious bulging and needs to be handled immediately. The control module 10 outputs corresponding alarm information according to the bulging condition of the battery. It can be understood that the number of pressure detection circuits 22 can be multiple, which are used to monitor the bulging pressure of different regions of the battery.

[0033] The current detection circuit 23 is used to obtain the current information of the battery, which can be connected with the load, and send the obtained current information to the control module 10. The control module 10 confirms whether the overcurrent protection of the battery is needed according to the current information. The voltage detection circuit 24 is used to obtain the pressure information of the battery and send the obtained pressure information to the control module 10. The control module 10 confirms whether the overvoltage protection of the battery is needed according to the pressure information.

[0034] Referring to Figure 2 As a further embodiment, the temperature detection circuit 21 comprises a temperature collection element Q1, which is used to collect the temperature information of the battery. Further, the temperature detection circuit 21 further comprises a temperature collection chip U1, which is connected with the temperature collection element Q1 and the control module 10 respectively.

[0035] The temperature detection circuit 21 can comprise a temperature collection element Q1 and a temperature collection chip U1. The temperature collection element Q1 is connected with the temperature collection chip U1, and the temperature collection chip U1 is connected with the control module 10. The temperature collection element Q1 is used to collect the temperature of the region and send it to the temperature collection chip U1. The temperature collection chip U1 converts the temperature information collected by the temperature collection element Q1 into temperature data and sends it to the control module 10. The temperature collection element Q1 can be a temperature sensor, a triode or other elements that can collect temperature, such as Figure 2 As shown in FIG. 1, the temperature collection element Q1 can be a triode, which collects temperature through the temperature characteristics of the diode in the triode. It can be understood that multiple temperature detection circuits 21 correspond to multiple temperature collection elements Q1, which can be arranged in different regions of the battery to facilitate the collection of temperature information of different regions.

[0036] Referring to Figure 3As a further embodiment, the pressure detection circuit 22 comprises a sensing bridge element for collecting pressure information of the battery. Further, the pressure detection circuit 22 further comprises a pressure collection chip U2, which is connected with the sensing bridge element and the control module 10 respectively.

[0037] The pressure detection circuit 22 can comprise a sensing bridge element and a pressure collection chip U2. The sensing bridge element can send pressure data to the pressure collection chip U2, and the pressure collection chip U2 can send the pressure data to the control module 10. As shown in Figure 3 The sensing bridge element can comprise a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8. It can be understood that the number of the pressure detection circuit 22 can be multiple, and the multiple pressure detection circuits 22 correspond to multiple sensing bridge elements. Different sensing bridge elements are arranged in different areas of the battery for collecting the bulging pressure of the battery in different areas.

[0038] Referring to Figure 4 As a further embodiment, the current detection circuit 23 comprises a current detection circuit for collecting current information of the battery. Further, the current detection circuit 23 comprises a current collection chip U3, which is connected with the current detection circuit and the control module 10 respectively.

[0039] The current detection circuit 23 can comprise a current detection circuit and a current collection chip U3. The current detection circuit is connected with the load circuit and the control module 10 respectively. The current detection circuit can comprise a thirteenth resistor R13. The current collection chip U3 can collect the pressure difference of the thirteenth resistor R13, and calculate the current size of the load circuit according to the pressure difference and the resistance value of the thirteenth resistor R13, so as to facilitate the confirmation of whether overcurrent protection is needed.

[0040] Referring to Figure 5 As a further embodiment, the voltage detection circuit 24 comprises a first operational amplifier U4 and a second operational amplifier U5. The non-inverting input terminal of the first operational amplifier U4 and the inverting input terminal of the second operational amplifier U5 are connected with the load circuit of the electronic device. The inverting input terminal of the first operational amplifier U4 and the non-inverting input terminal of the second operational amplifier are connected with a reference circuit. The output terminals of the first operational amplifier U4 and the second operational amplifier U5 are connected with the control module 10.

[0041] The voltage detection circuit 24 can include a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, the fourteenth resistor R14 and the fifteenth resistor R15 are used for voltage division of the voltage input by the load circuit, and the voltage signal after voltage division is output to the first operational amplifier U4, the sixteenth resistor R16 and the seventeenth resistor R17 are used for voltage division of the voltage input by the load circuit, and the voltage signal after voltage division is output to the second operational amplifier U5, the output signals of the first operational amplifier U4 and the second operational amplifier U5 are output to the second switch tube Q2 through the bidirectional diode PD, and finally output to the control module 10, and the control module 10 confirms whether overvoltage protection is needed according to the received signal.

[0042] The utility model also provides a kind of electronic equipment, and the electronic equipment includes the battery information monitoring circuit described in any one of the above embodiments;The battery information monitoring circuit includes control module 10 and information monitoring module 20;The information monitoring module 20 includes multiple information monitoring circuits, and the information monitoring circuit is used to monitor the state information of battery, and the state information is sent to the control module 10, wherein one information monitoring circuit monitors one state information.

[0043] The battery information monitoring circuit can be configured in any electronic device to monitor the state information of the battery in the electronic device, for example, the battery information monitoring circuit can be configured in an electric vehicle to monitor the state information of the lithium battery in the electric vehicle.

[0044] The battery information monitoring circuit can include control module 10 and information monitoring module 20, and the control module 10 can include a control chip, which can be a logic control chip, for determining whether to trigger a safety mechanism. The information monitoring module 20 can include multiple information monitoring circuits, which can be used to monitor the current, voltage, temperature and pressure information of the battery. For example, the information monitoring module 20 can include four information monitoring circuits, one information monitoring circuit for monitoring the current information of the battery, one information monitoring circuit for monitoring the voltage information of the battery, one information monitoring circuit for monitoring the temperature information of the battery, and the last information monitoring circuit for monitoring the pressure information of the battery. It can be understood that the information monitoring module 20 is not limited to monitoring the above four state information, and one or more information monitoring circuits can be added according to actual conditions to monitor corresponding state information.

[0045] In actual use, if the electric vehicle is configured with the battery information monitoring circuit, and the information monitoring module 20 of the battery information monitoring circuit includes four information monitoring circuits for monitoring temperature information, pressure information, current information and voltage information respectively, the control module 10 can confirm the state of the battery according to different information, and perform corresponding warning actions according to the state of the battery. For example, the control module 10 receives the temperature information, and confirms whether the temperature of the battery is too high according to the temperature information. When the temperature of the battery exceeds the threshold value, the corresponding warning action can be triggered, for example, the power supply to the load is disconnected, so as to protect the battery. In addition, gradient warning can also be performed, that is, when the temperature of the battery is in a certain interval, the control module 10 outputs information to remind the user that the battery temperature is high, and when the temperature of the battery is in another interval, the control module 10 outputs alarm information to remind the user that the battery temperature is too high.

[0046] Generally, four gradient safety mechanisms can be provided, which are safety, reminder, alarm and protection action. Safety means that the current state information of the battery is in a safe condition and can be normally used. Reminder means that the state information of the battery is higher than the normal state information, and the user can be reminded to pay attention to the state information of the battery. Alarm means that the state information of the battery is in an abnormal state. The protection action is that the control module 10 automatically triggers the protection action, for example, disconnecting the power supply to the load to protect the battery.

[0047] The battery information monitoring circuit and the electronic equipment disclosed by the utility model can monitor different state information of the battery through the information monitoring module, thereby realizing all-round monitoring of the battery.

[0048] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A battery information monitoring circuit, characterized by comprising: The battery information monitoring circuit is applied to an electronic device, and the battery information monitoring circuit comprises: a control module; an information monitoring module, the information monitoring module comprising a plurality of information monitoring circuits, the information monitoring circuits being used for monitoring state information of a battery and transmitting the state information to the control module, wherein one information monitoring circuit monitors one kind of state information; the plurality of information monitoring circuits comprising a temperature detection circuit, a pressure detection circuit, a current detection circuit and a voltage detection circuit; the temperature detection circuit being connected with the control module, and being used for collecting temperature information of the battery and transmitting the temperature information to the control module; the pressure detection circuit being connected with the control module, and being used for collecting pressure information of the battery and transmitting the pressure information to the control module; the current detection circuit being connected with the control module, and being used for collecting current information of the battery and transmitting the current information to the control module; the voltage detection circuit being connected with the control module, and being used for collecting voltage information of the battery and transmitting the voltage information to the control module.

2. The battery information monitoring circuit of claim 1, wherein, The temperature detection circuit comprises a temperature collection element, and the temperature collection element is used for collecting temperature information of the battery.

3. The battery information monitoring circuit of claim 2, wherein, The temperature detection circuit further comprises a temperature collection chip, and the temperature collection chip is connected with the temperature collection element and the control module respectively.

4. The battery information monitoring circuit of claim 1, wherein, The pressure detection circuit comprises an inductive bridge element, and the inductive bridge element is used for collecting pressure information of the battery.

5. The battery information monitoring circuit of claim 4, wherein, The pressure detection circuit further comprises a pressure collection chip, and the pressure collection chip is connected with the inductive bridge element and the control module respectively.

6. The battery information monitoring circuit of claim 1, wherein, The current detection circuit comprises a current detection circuit, and the current detection circuit is used for collecting current information of the battery.

7. The battery information monitoring circuit of claim 6, wherein, The current detection circuit comprises a current collection chip, and the current collection chip is connected with the current detection circuit and the control module respectively.

8. The battery information monitoring circuit of claim 1, wherein, The voltage detection circuit comprises a first operational amplifier and a second operational amplifier, the non-inverting input end of the first operational amplifier and the inverting input end of the second operational amplifier are connected with a load circuit of the electronic device, the inverting input end of the first operational amplifier and the non-inverting input end of the second operational amplifier are connected with a reference circuit, and the output ends of the first operational amplifier and the second operational amplifier are connected with the control module.

9. An electronic device, comprising: The battery information monitoring circuit comprises a battery and any one of claims 1-8.

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