A control circuit for identifying a battery ID

Abstract

The utility model relates to battery ID identification circuit technical field discloses a kind of control circuit of higher reliability and more stable identification battery ID, including battery component (110) and charging component (120), wherein, one end of charging component (120) is connected with one end of battery component (110), for obtaining the voltage signal of both ends of battery component (110), and according to voltage signal identification and / or control the charging state of battery component (110).

Description

Technical Field

[0001] This utility model relates to the field of battery ID recognition circuit technology, and more specifically, to a control circuit for recognizing battery ID. Background Technology

[0002] Battery modules (such as lithium batteries) provide power for operating portable electronic devices such as mobile phones and personal digital assistants. Each battery module needs to be recharged when its internal power is nearly depleted. Before charging, the battery type of the module should be determined to provide the appropriate charging current and voltage according to the module's specifications. However, many products require the installation of lithium batteries of different capacities to control costs. Due to differences in capacity, discharge rate, etc., different product software is needed to match its charging and discharging functions, increasing the difficulty of software development. Utility Model Content

[0003] The technical problem this utility model aims to solve is that, in order to control costs, many existing products require the installation of lithium batteries of different capacities. Due to the differences in capacity, discharge rate, etc., different product software needs to be matched to their charging and discharging functions, which increases the difficulty of software development. This utility model provides a control circuit for identifying battery ID with higher reliability and stability.

[0004] The technical solution adopted by this utility model to solve its technical problem is: constructing a control circuit for identifying battery ID, which includes:

[0005] Battery components;

[0006] A charging component, one end of which is connected to one end of the battery assembly, is used to acquire voltage signals at both ends of the battery assembly and to identify and / or control the charging state of the battery assembly based on the voltage signals.

[0007] In some embodiments, the battery assembly includes at least a first capacitor and a second resistor connected in parallel.

[0008] One end of the first capacitor and one end of the second resistor are connected to the analog DC input terminal of the charging component.

[0009] One end of the first capacitor and one end of the second resistor are connected to a common terminal.

[0010] In some embodiments, the charging assembly includes at least a master controller.

[0011] The analog DC input terminal of the main controller is connected to one end of the first capacitor and one end of the second resistor, respectively.

[0012] The main controller is used to acquire the voltage signal across the first capacitor and identify and / or control the charging state of the battery assembly based on the voltage signal.

[0013] In some embodiments, the charging assembly further includes a first resistor.

[0014] One end of the first resistor is connected to one end of the first capacitor.

[0015] The other end of the first resistor is connected to the signal interface of the main controller.

[0016] In some implementations, the resistance values ​​of the first resistor and the second resistor are selected to be 50K.

[0017] The control circuit for identifying battery IDs according to this invention includes a battery assembly and a charging assembly. One end of the charging assembly is connected to one end of the battery assembly to acquire voltage signals across the battery assembly and to identify and / or control the charging state of the battery assembly based on these voltage signals. Compared with existing technologies, by setting up a charging assembly that can acquire voltage signals across the battery assembly in real time, and then identifying and / or controlling the charging state of the battery assembly based on the acquired voltage signals, this invention effectively solves the problem that many current products require the installation of lithium batteries of different capacities to control costs. Because of differences in capacity and discharge rate, different product software is needed to match their charging and discharging functions, increasing the difficulty of software development. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0019] Figure 1 This is a circuit diagram of an embodiment of the control circuit for identifying battery ID provided by this utility model. Detailed Implementation

[0020] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1 As shown, in the first embodiment of the control circuit for identifying battery ID according to this utility model, the control circuit 100 for identifying battery ID includes a battery assembly 110 and a charging assembly 120.

[0022] The battery assembly 110 is used to receive input / output current signals and provide operating power to the load.

[0023] The charging component 120 is used to detect / identify the voltage signal of the battery component 110 and control the charging state of the battery component 110 according to the voltage signal;

[0024] Specifically, the battery assembly 110 may include multiple battery packs connected in parallel;

[0025] Furthermore, one end of the charging component 120 is connected to one end of the battery component 110 to acquire voltage signals at both ends of the battery component 110 and to identify and / or control the charging state of the battery component 110 based on the voltage signals.

[0026] Using this technical solution, by setting up a charging component 120 that can acquire the voltage signal at both ends of the battery component 110 in real time, and then identifying and / or controlling the charging state of the battery component based on the acquired voltage signal, it can effectively solve the problem that many current products need to install lithium batteries of different capacities to control costs. Due to differences in capacity, discharge rate, etc., different product software needs to be matched to their charging and discharging functions, which increases the difficulty of software development.

[0027] In some embodiments, to ensure the reliability of the charging component 120 in obtaining the ID information of the battery component 110, a first capacitor C101 and a second resistor R102 can be provided in the battery component 110.

[0028] The first capacitor C101 and the second resistor R102 are connected in parallel.

[0029] One end of the first capacitor C101 and the second resistor R102 are connected to the analog DC input terminal (corresponding to ADC-IN) of the charging component 120.

[0030] One end of the first capacitor C101 and one end of the second resistor R102 are connected to the common terminal.

[0031] In some implementations, to improve circuit performance, a master controller MCU can be provided in the charging assembly 120, which has the functions of signal processing, counting, parameter analysis and controlling the charging state;

[0032] Specifically, the analog DC input terminal (corresponding to ADC-IN) of the main controller MCU is connected to one end of the first capacitor C101 and the second resistor R102, respectively.

[0033] The main controller MCU is used to acquire the voltage signal across the first capacitor C101 and identify and / or control the charging state of the battery assembly 110 based on the voltage signal.

[0034] In some embodiments, in order to ensure the stability of the charging time of the first capacitor C101, a first resistor R101 can be provided in the charging assembly 120, which has the function of voltage division.

[0035] Specifically, one end of the first resistor R101 is connected to one end of the first capacitor C101.

[0036] The other end of the first resistor R101 is connected to the signal interface (corresponding to GPIO) of the main controller MCU.

[0037] In some implementations, the resistance values ​​of the first resistor R101 and the second resistor R102 are selected to be 50K.

[0038] Specifically, when the main controller MCU powers on and charges the first capacitor C101 through the first resistor R101, the signal interface terminal (corresponding to GPIO) of the main controller MCU is driven by a high level for 100ms.

[0039] After 100ms, the Rth on the first capacitor C101 is calculated using the AD value of the analog DC input terminal (corresponding to ADC-IN) of the main controller MCU;

[0040] When the signal interface terminal (corresponding to GPIO) is pulled low, the first capacitor C101 is started to discharge, and the timer is set at the same time;

[0041] Sample the voltage across the first capacitor C101 until the voltage drops below Vmax*0.368, then turn off the timer. The timer duration is an RC time constant T.

[0042] Calculate the second resistor R102 (corresponding to Rth) / / the first resistor R101;

[0043] Calculate C = T / Rth / / R101.

[0044] When the battery assembly 110 is plugged in, the signal interface terminal (corresponding to GPIO) of the main controller MCU is in a high-level state, and the charging time for the first capacitor C101 is about 100ms.

[0045] Charge the first capacitor C101 to more than 98% of the voltage corresponding to the two voltage divider resistors, record the AD value here, then calculate the Rntc of the second resistor R102, and then calculate the total discharge resistance Rdis = 50K upper bias resistance and Rntc.

[0046] When the signal interface terminal (corresponding to GPIO) is in a low-level state, the first capacitor C101 begins to discharge, and the timer is turned on;

[0047] Sample the voltage signal across the first capacitor C101 until the voltage drops below Vmax*0.368, then turn off the timer. The timer duration is an RC time constant T.

[0048] Calculate C = T / Rth / / R101, determine the ID of battery module 110 based on the size of C, such as id-1 for 27uf and id-2 for 54uf, then determine parameters such as battery capacity based on the ID of battery module 110, and then set the charging and discharging data based on the parameters.

[0049] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A control circuit for identifying battery ID, characterized in that, have: Battery components; A charging component, one end of which is connected to one end of the battery component, is used to acquire voltage signals at both ends of the battery component and to identify and / or control the charging state of the battery component based on the voltage signals. The battery assembly includes at least a first capacitor and a second resistor connected in parallel. One end of the first capacitor and one end of the second resistor are connected to the analog DC input terminal of the charging component. One end of the first capacitor and one end of the second resistor are connected to a common terminal; The charging component includes at least a main controller. The analog DC input terminal of the main controller is connected to one end of the first capacitor and one end of the second resistor, respectively. The main controller is used to acquire the voltage signal across the first capacitor and identify and / or control the charging state of the battery assembly based on the voltage signal.

2. The control circuit for identifying battery ID according to claim 1, characterized in that, The charging component also includes a first resistor. One end of the first resistor is connected to one end of the first capacitor. The other end of the first resistor is connected to the signal interface of the main controller.

3. The control circuit for identifying battery ID according to claim 2, characterized in that, The resistance values ​​of the first resistor and the second resistor are selected to be 50K.

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