Intelligent charger for storage battery and charging method

Abstract

The invention discloses a storage battery intelligent charger and a charging method, the storage battery intelligent charger comprises a charger and an intelligent charging plug, a negative electrode of the charger is connected with a negative electrode wire of a storage battery, one end of the intelligent charging plug is connected with a positive electrode of the charger, and the other end is connected with a positive electrode of the storage battery; the intelligent charging plug comprises a current detection unit, a judgment unit and a control unit, the current detection unit is used for detecting the charging current of the storage battery in real time, the judgment unit is connected with the current detection unit and used for comparing the detected and collected charging current with a preset threshold value, and the control unit is connected with the judgment unit and used for controlling the storage battery to be charged. According to the method, the charging current of the storage battery is automatically measured, the charging state is judged according to an accurate algorithm based on the capacity of the storage battery, and whether the battery is fully charged or not can be accurately recognized. The service life of the automobile storage battery is obviously prolonged, and the cost of frequently replacing the battery is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of chargers, and in particular to an intelligent battery charger and a charging method. Background Art

[0002] In today's society, the number of cars continues to grow. Whether in daily use scenarios or specific maintenance and storage environments, the charging management of car batteries faces many challenges.

[0003] Currently, existing methods for determining whether a car battery is fully charged have significant shortcomings. Using charging time to determine full charge status lacks accuracy. Because the actual condition of batteries in different vehicles varies widely, such as battery aging and initial charge levels, even batteries of the same capacity can have significantly different actual charging times. Using a fixed charging time to determine full charge status can easily lead to overcharging or undercharging, shortening the battery's lifespan.

[0004] While using a multimeter to measure battery current to determine full charge status is scientific in principle, it's susceptible to interference from external factors in practice. The operation of other electrical equipment on the vehicle can generate electromagnetic interference, affecting the accuracy of the multimeter's measurements. Furthermore, unstable connection between the test leads and the battery terminals during measurement can lead to inaccurate results, making it difficult to reliably determine whether the battery is truly full.

[0005] Measuring battery voltage to determine full charge status also presents challenges. Battery voltage fluctuates during charging due to various factors, including chemical reactions and temperature changes. Different brands and models of batteries have varying voltage characteristics, leading to significant errors when solely relying on voltage to determine full charge status, making accurate determinations impossible.

[0006] The method of observing the electrolyte state to determine whether a battery is fully charged has a narrow application scope and is only applicable to traditional lead-acid batteries. It is not suitable for new maintenance-free batteries. In addition, the method of distinguishing by observing bubbles or listening to sounds is highly subjective, and different people may have different judgment standards, which can easily lead to misjudgment.

[0007] In terms of charging equipment, existing chargers on the market generally lack intelligent charging capabilities. This means that during the charging process, manual monitoring and judgment of the battery's charge status are frequently required. This consumes a lot of time and effort, and can easily lead to overcharging due to negligence, which can damage the battery and increase operating costs.

[0008] In summary, the existing methods and devices for determining the charging status of automobile batteries have many defects, and a technical solution that can accurately determine the charging status and realize intelligent charging control is urgently needed to solve these problems. Summary of the Invention

[0009] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid blurring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0010] Therefore, the purpose of the present invention is to provide a battery intelligent charger and charging method, which automatically measures the charging current of the battery to determine whether the battery is fully charged. When the system determines that the battery is fully charged, it will automatically cut off the power supply to avoid damaging the battery.

[0011] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0012] A battery intelligent charger, comprising:

[0013] The negative terminal of the charger is connected to the negative terminal of the battery;

[0014] Smart charging plug, one end of which is connected to the positive pole of the charger and the other end is connected to the positive pole of the battery;

[0015] The smart charging plug includes:

[0016] Current detection unit, used for real-time detection of battery charging current;

[0017] a judgment unit, connected to the current detection unit, and configured to compare the detected charging current with a preset threshold;

[0018] The control unit is connected to the judgment unit and is used to cut off the circuit connection between the charger and the battery when the charging current reaches the preset threshold.

[0019] As a preferred solution of the battery intelligent charger described in the present invention, the current detection unit includes a resistor arranged on the wire connecting the intelligent charging plug and the battery, and a current detection sensor electrically connected to the judgment unit, and the positive and negative sampling heads of the current detection sensor are respectively arranged at the two ends of the resistor.

[0020] As a preferred solution of the battery intelligent charger described in the present invention, the threshold value is defined as:

[0021] I threshold =C×0.02

[0022] Among them, I threshold It represents the current threshold when the battery is fully charged, and C is the rated capacity of the battery.

[0023] As a preferred embodiment of the intelligent battery charger of the present invention, the control unit includes a controller connected to the judgment unit and a relay provided on the circuit connecting the intelligent charging plug and the charger;

[0024] When the judgment unit analyzes the collected current value I≤I threshold , and remains stable for a certain period of time, the judgment unit determines that the battery is fully charged and controls the relay to disconnect the circuit connecting the smart charging plug and the charger.

[0025] As a preferred embodiment of the intelligent battery charger described in the present invention, it further includes an audible and audible alarm unit, which is configured to emit a visual or audible prompt signal when the intelligent charging plug is disconnected from the circuit connected to the charger.

[0026] A charging method for a battery intelligent charger, the steps are as follows:

[0027] S1. Connect the negative terminal of the charger to the negative terminal of the battery, and connect one end of the smart charging plug to the positive terminal of the charger and the other end to the positive terminal of the battery. At this time, the charger and the battery are connected;

[0028] S2. After the charger is connected to the battery, the control unit performs initialization operations and sets the current sampling frequency and threshold judgment parameters;

[0029] S3, a current detection unit detects the charging current of the battery in real time and sends the detected current to the judgment unit, which compares the detected charging current with a preset threshold;

[0030] S3, when the judgment unit analyzes the collected current value I≤I threshold , and remains stable for a certain period of time, the judgment unit determines that the battery is fully charged, and the control unit cuts off the circuit connection between the charger and the battery to stop charging.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. This invention automatically measures battery charging current and determines the charging status using a precise algorithm based on battery capacity, accurately identifying whether the battery is fully charged. Compared to traditional methods, this method avoids overcharging or undercharging problems caused by inaccurate charging time judgments, interference with current and voltage measurements, and subjective observation of electrolyte status. Precise charging control effectively reduces the risk of battery plate aging and capacity loss, significantly extending the service life of automotive batteries and reducing the cost of frequent battery replacements.

[0033] 2. When the system determines the battery is fully charged, it automatically cuts off the power supply, fundamentally eliminating the safety hazards caused by overcharging. In traditional charging methods, overcharging can cause dangerous conditions such as heating, swelling, and even fire and explosion. The automatic cut-off function of this invention provides reliable safety during the charging process, effectively protecting the safety of people and property, whether charging a private car in a home environment or in crowded areas such as professional maintenance sites and large parking lots. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0035] Figure 1 This is a system block diagram of a battery intelligent charger according to the present invention;

[0036] Figure 2 This is a system block diagram of an intelligent charging plug for an intelligent battery charger according to the present invention; Figure 3 The figure is a circuit diagram of an intelligent battery charger according to the present invention. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] The present invention provides a battery intelligent charger and charging method, which automatically measures the charging current of the battery to determine whether the battery is fully charged. After the system determines that the battery is fully charged, the power supply is automatically cut off to avoid damaging the battery.

[0039] Figure 1-Figure 2 The figure shows a schematic diagram of the structure of an embodiment of a battery intelligent charger of the present invention. Figure 1-Figure 2 In this embodiment, a smart battery charger includes a charger 100 and a smart charging plug 200 .

[0040] The negative electrode of the charger 100 is connected to the negative electrode of the battery 300;

[0041] One end of the smart charging plug 200 is connected to the positive electrode of the charger 100, and the other end is connected to the positive electrode of the battery 300. In this embodiment, the smart charging plug 200 includes a current detection unit 210, a judgment unit 220, and a control unit 300. The current detection unit 210 is used to detect the charging current of the battery 300 in real time; the judgment unit 220 is connected to the current detection unit 210 and is used to compare the detected and collected charging current with a preset threshold value. The control unit 300 is connected to the judgment unit 220 and is used to cut off the circuit connection between the charger 100 and the battery 300 when the charging current reaches the preset threshold value.

[0042] Preferably, in this embodiment, the current detection unit 210 includes a resistor 210a provided on the wire connecting the smart charging plug 200 and the battery 300, and a current detection sensor electrically connected to the judgment unit 220. The positive and negative sampling heads of the current detection sensor are respectively provided at the two ends of the resistor 210a, and the current size of the charging current of the battery 300 is detected by measuring the current passing through the resistor 210a.

[0043] The threshold is defined as:

[0044] I threshold =C×0.02

[0045] Among them, I threshold It represents the current threshold when the battery 300 is fully charged, and C is the rated capacity of the battery.

[0046] The control unit 300 includes a controller 310 connected to the judgment unit 220 and a relay 320 provided on the circuit connecting the smart charging plug 200 and the charger 100. The controller 310 is used to receive the current comparison analyzed by the judgment unit 220 and send a control instruction to the relay 320 to control the relay 320 to operate. When the judgment unit 220 analyzes that the collected current value I≤I threshold , and remains stable for a certain period of time, the judgment unit 220 determines that the battery 300 is fully charged, and controls the relay 320 to disconnect the circuit connecting the smart charging plug 200 and the charger 100.

[0047] In another embodiment, an audible and visual alarm unit is further included, and the audible and visual alarm unit is configured to emit a visual or audible prompt signal when the circuit connecting the smart charging plug 200 to the charger 100 is disconnected.

[0048] Combine Figure 1-Figure 2 The charging method of a battery intelligent charger in this embodiment has the following specific steps:

[0049] S1. Connect the negative electrode of the charger 100 to the negative electrode of the battery 300, and connect one end of the smart charging plug 200 to the positive electrode of the charger 100 and the other end to the positive electrode of the battery 300. At this time, the charger 100 is connected to the battery 300.

[0050] S2. After the charger 100 is connected to the battery 300, the control unit 300 performs initialization operations and sets the current sampling frequency and threshold judgment parameters;

[0051] S3. The current detection unit 210 detects the charging current of the battery 300 in real time and sends the detected current to the judgment unit 220. The judgment unit 220 compares the detected charging current with a preset threshold value.

[0052] S3, when the judgment unit 220 analyzes the collected current value I≤I threshold , and remains stable for a certain period of time, the judgment unit 220 determines that the battery 300 is fully charged, and the control unit 300 cuts off the circuit connection between the charger 100 and the battery 300 to stop charging.

[0053] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery intelligent charger, characterized in that: include: The negative electrode of the charger (100) is connected to the negative electrode of the battery (300); A smart charging plug (200), one end of which is connected to the positive electrode of the charger (100) and the other end of which is connected to the positive electrode of the battery (300); The smart charging plug (200) comprises: A current detection unit (210) for detecting the charging current of the battery (300) in real time; A judgment unit (220), connected to the current detection unit (210), is used to compare the detected and collected charging current with a preset threshold value; The control unit (300) is connected to the judgment unit (220) and is used to cut off the circuit connection between the charger (100) and the battery (300) when the charging current reaches the preset threshold.

2. A battery intelligent charger according to claim 1, characterized in that: The current detection unit (210) comprises a resistor (210a) arranged on a wire connecting the intelligent charging plug (200) and the battery (300), and a current detection sensor electrically connected to the judgment unit (220), wherein the positive and negative sampling heads of the current detection sensor are respectively arranged at two ends of the resistor (210a).

3. The intelligent battery charger according to claim 1, characterized in that: The threshold is defined as: I threshold =C×0.02 Among them, I threshold It represents the current threshold when the battery (300) is fully charged, and C is the rated capacity of the battery.

4. The intelligent battery charger according to claim 1, characterized in that: The control unit (300) includes a controller (310) connected to the judgment unit (220) and a relay (320) provided on a circuit connecting the smart charging plug (200) and the charger (100); When the judgment unit (220) analyzes the collected current value I≤I threshold , and remains stable for a certain period of time, the judgment unit (220) determines that the battery (300) is fully charged, and controls the relay (320) to disconnect the circuit connecting the smart charging plug (200) and the charger (100).

5. The intelligent battery charger according to claim 1, characterized in that: It also includes an audible and audible alarm unit, which is configured to emit a visual or audible prompt signal when the circuit connecting the smart charging plug (200) and the charger (100) is disconnected.

6. A charging method for a battery intelligent charger according to any one of claims 1 to 5, characterized in that: Here are the steps: S1. Connect the negative electrode of the charger (100) to the negative electrode of the battery (300), and connect one end of the smart charging plug (200) to the positive electrode of the charger (100) and the other end to the positive electrode of the battery (300). At this time, the charger (100) is connected to the battery (300); S2: After the charger (100) is connected to the battery (300), the control unit (300) performs an initialization operation and sets the current sampling frequency and threshold judgment parameters; S3, a current detection unit (210), detecting the charging current of the storage battery (300) in real time, and sending the detected current to a judgment unit (220), and the judgment unit (220) comparing the detected and collected charging current with a preset threshold; S3, when the judgment unit (220) analyzes the collected current value I≤I threshold , and remains stable for a certain period of time, the judgment unit (220) determines that the battery (300) is fully charged, and the control unit (300) cuts off the circuit connection between the charger (100) and the battery (300), stopping charging.

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