CN114142543A - Battery charging and discharging loop, charging method and device and electronic equipment - Google Patents
Battery charging and discharging loop, charging method and device and electronic equipment Download PDFInfo
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- CN114142543A CN114142543A CN202010924203.5A CN202010924203A CN114142543A CN 114142543 A CN114142543 A CN 114142543A CN 202010924203 A CN202010924203 A CN 202010924203A CN 114142543 A CN114142543 A CN 114142543A
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- 238000007600 charging Methods 0.000 title claims abstract description 112
- 238000007599 discharging Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 40
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- 238000005516 engineering process Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The disclosure relates to a battery charging and discharging loop, a charging method and device and electronic equipment. The battery charge and discharge circuit includes: an electric core; the charging and discharging circuit comprises a first positive terminal, a first negative terminal and a circuit protection module, wherein the first positive terminal is conducted to the positive electrode of the battery cell, the first negative terminal is conducted to the negative electrode of the battery cell, and the circuit protection module is communicated between the first positive terminal and the positive electrode of the battery cell and between the first negative terminal and the negative electrode of the battery cell; and the voltage detection circuit comprises a second positive end, a second negative end, a first protection circuit and a second protection circuit, the first protection circuit is connected in series between the second positive end and the positive electrode of the battery cell, the second protection circuit is connected in series between the second negative end and the negative electrode of the battery cell, the voltage detection circuit detects the voltage of the battery cell, and the first protection circuit and the second protection circuit are switched to a disconnection state when the voltage detection circuit is abnormal.
Description
Technical Field
The disclosure relates to the technical field of terminals, and in particular to a battery charging and discharging loop, a charging method and device and electronic equipment.
Background
Currently, with increasingly powerful functions configured in a mobile phone terminal, in order to satisfy each function of the mobile phone terminal and maintain a certain endurance, a large-capacity battery is urgently needed to be configured in the mobile phone terminal, and the large-capacity battery brings the disadvantage of long charging time, so how to improve the charging efficiency becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
The present disclosure provides a battery charging/discharging circuit, a charging method and apparatus, and an electronic device, so as to solve the deficiencies in the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided a battery charging and discharging circuit, including:
an electric core;
the charging and discharging circuit comprises a first positive terminal, a first negative terminal and a circuit protection module, wherein the first positive terminal is conducted to the positive electrode of the battery cell, the first negative terminal is conducted to the negative electrode of the battery cell, and the circuit protection module is communicated between the first positive terminal and the positive electrode of the battery cell and between the first negative terminal and the negative electrode of the battery cell;
the voltage detection circuit comprises a second positive end, a second negative end, a first protection circuit and a second protection circuit, wherein the first protection circuit is connected in series between the second positive end and the positive electrode of the battery cell, the second protection circuit is connected in series between the second negative end and the negative electrode of the battery cell, the voltage detection circuit detects the voltage of the battery cell, and the first protection circuit and the second protection circuit are used for switching to a disconnection state when the voltage detection circuit is abnormal.
Optionally, the first protection circuit includes a first fuse, and the second protection circuit includes a second fuse.
Optionally, the voltage detection circuit further includes a first resistor and a second resistor, where the first resistor is connected in series between the second positive terminal and the positive electrode of the battery cell, and the second resistor is connected in series between the second negative terminal and the negative electrode of the battery cell.
Optionally, the circuit protection module includes a protection chip and a field effect transistor connected to the protection chip, the field effect transistor is connected in series between the first negative terminal and the negative electrode of the battery cell, and the protection chip controls a switching state of the field effect transistor to open or close the charging and discharging loop.
Optionally, the voltage detection circuit further includes a first capacitor, one end of the first capacitor is connected between the second positive terminal and the positive electrode of the battery cell, and the other end of the first capacitor is grounded.
Optionally, the voltage detection circuit further includes a second capacitor, one end of the second capacitor is connected between the second negative terminal and the negative electrode of the battery cell, and the other end of the second capacitor is grounded.
According to a second aspect of the embodiments of the present disclosure, there is provided an electronic device including the battery charging and discharging circuit according to any one of the embodiments.
According to a third aspect of the embodiments of the present disclosure, there is provided a charging method applied to the battery charging and discharging circuit according to any one of the embodiments, the charging method including:
acquiring the voltage of the battery cell detected by a voltage detection circuit;
and adjusting the charging current of the charging and discharging loop according to the detected voltage of the battery core.
Optionally, the first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; the charging method further comprises:
acquiring a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;
and when the first current and/or the second current are/is within a corresponding current setting range, controlling the first circuit switch and/or the second circuit switch to be switched to an off state.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a charging device applied to the battery charging and discharging circuit according to any one of the embodiments, the charging device including:
the first acquisition module is used for acquiring the voltage of the battery cell detected by the voltage detection circuit;
and the adjusting module is used for adjusting the charging current of the charging and discharging loop according to the detected voltage of the battery core.
Optionally, the first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; the charging device further includes:
the second acquisition module acquires a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;
and the control module controls the first circuit switch and/or the second circuit switch to be switched to an off state when the first current and/or the second current are/is within a corresponding current setting range.
According to a fifth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method according to any one of the embodiments described above.
According to a sixth aspect of the embodiments of the present disclosure, there is provided an electronic device including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to carry out the steps of the method according to any one of the above embodiments when executed.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the embodiment, on one hand, the voltage of the battery cell can be detected by using the voltage detection circuit, so that the charging current of the battery cell can be adjusted according to the voltage of the battery cell, and the voltage difference caused by the circuit protection module can be eliminated, so that the duration of constant-current charging is prolonged, and the charging efficiency is improved; on the other hand, the first protection circuit and the second protection circuit can be switched to a disconnected state when the voltage detection circuit is abnormal, the voltage detection circuit is disconnected, voltage cannot be detected continuously, then the charging process of the battery cell is disconnected, the battery cell is protected when the charging detection circuit is abnormal, and the safety of the battery cell is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a battery charge and discharge circuit in the related art.
Fig. 2 is a schematic diagram illustrating a structure of a battery charge and discharge circuit according to an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic circuit diagram illustrating a battery charge and discharge circuit according to an exemplary embodiment of the present disclosure.
Fig. 4 is a circuit schematic diagram illustrating another battery charge and discharge circuit according to an exemplary embodiment of the present disclosure.
Fig. 5 is a schematic circuit diagram illustrating yet another battery charge and discharge circuit according to an exemplary embodiment of the present disclosure.
FIG. 6 is a flow chart illustrating a method of charging according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating a charging device according to an exemplary embodiment.
Fig. 8 is a block diagram illustrating another charging device in accordance with an exemplary embodiment.
Fig. 9 is a block diagram illustrating a charging device in accordance with an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Fig. 1 is a schematic diagram of a battery circuit in the related art. As shown in fig. 1, in the related art, taking a lithium battery as an example, the battery circuit includes a battery cell 101 and a cell protection circuit 102, and the cell protection circuit 102 is electrically connected to the battery cell 101. In the charging and discharging processes of the lithium battery, the charging current and the discharging current generally need to be output through the cell protection circuit 102, so that the battery cell 101 is protected by the protection effect of the cell protection circuit 102 when abnormal conditions such as overcharge, overcurrent, or overdischarge occur.
When charging the battery cell 101, four charging states may be generally included, and specifically, the four charging states may include a trickle charging phase, a constant-current charging phase, a constant-voltage charging phase, and a termination phase. The trickle phase may detect voltages at the positive electrode of the battery cell 101 and at the two ends of the battery cell protection circuit 102, and after the voltages rise to a certain threshold, the trickle phase switches to the constant-current charging phase, and in the constant-current charging phase, the lithium battery may be charged with a constant current, and the voltages at the positive electrode of the battery cell 101 and at the two ends of the battery cell protection circuit 102 are continuously detected, and after the voltages rise to a certain threshold, the trickle phase switches to the constant-voltage charging phase, and finally the charging is terminated. The constant-current charging stage is the most efficient stage in the charging process, so that the extension of the duration of the constant-current charging stage is of great significance for improving the charging efficiency of the lithium battery.
In the related art, the charging process is adjusted according to the voltage across the battery architecture formed by the battery cell 101 and the cell protection circuit 102 during the charging process. However, it can be understood that a certain impedance necessarily exists in the primary protection device, the secondary protection device and the circuit included in the cell protection circuit 102, and thus a voltage difference exists between voltages at two ends of the battery architecture and a voltage of the battery cell 101 in the related art, that is, a voltage detected in the related art is higher than an actual cell voltage of the battery cell 101, so that a constant current charging phase is ended in advance in a charging process, and a duration of the constant current charging phase is shortened, which affects charging efficiency.
Therefore, the present disclosure provides a battery charging and discharging circuit 100 as shown in fig. 2 and fig. 3, as shown in fig. 1 and fig. 2, the battery charging and discharging circuit 100 may include a battery cell 1, a charging and discharging circuit 2 and a voltage detection circuit 3, the charging and discharging circuit 2 may include a first positive terminal 21, a first negative terminal 22 and a circuit protection module 23, the first positive terminal 21 may be connected to the positive electrode of the battery cell 1, the first negative terminal 22 may be connected to the negative electrode of the battery cell 1, the circuit protection module 23 may be connected between the first positive terminal 21 and the positive electrode of the battery cell 1 and between the first negative terminal 22 and the negative electrode of the battery cell 1, the circuit protection module 23 may include a primary protection circuit, a secondary protection circuit and several capacitors and resistors, during charging or discharging of the battery cell 1 through the first positive terminal 21 and the second negative terminal 22, the circuit protection is performed through the circuit protection module 23, the damage to the battery cell 1 under the conditions of overcharge, overdischarge, overcurrent or short circuit is avoided.
The voltage detection circuit 3 may include a second positive terminal 31, a second negative terminal 32, a first protection circuit 33 and a second protection circuit 34, where the second positive terminal 31 is conducted to the positive electrode of the electric core 1, and the second negative terminal 32 is conducted to the negative electrode of the electric core 1, the first protection circuit 33 is connected in series between the second positive terminal 31 and the positive electrode of the electric core 1, and the second protection circuit 34 is connected in series between the second negative terminal 34 and the negative electrode of the electric core 34, and the voltage of the electric core 1 may be detected by using the voltage detection circuit 3, and then the charging current of the electric core 1 may be adjusted according to the voltage of the electric core 1 detected by the voltage detection circuit 3, and the voltage difference caused by the circuit protection module 2 may be eliminated, thereby facilitating extension of the duration of constant current charging, and thereby improving the charging efficiency.
On the other hand, the first protection circuit 33 and the second protection circuit 34 may be switched to an off state when the voltage detection circuit 3 is abnormal, the voltage detection circuit 3 is turned off, and the voltage cannot be detected continuously, so that the charging process of the battery cell 1 is cut off, and the battery cell 1 is protected. Specifically, the abnormal state of the voltage detection circuit 3 may specifically include the following three cases: first, the second positive terminal 31 and the second negative terminal 32 are in contact short circuit, at this time, at least one of the first protection circuit 33 and the second protection circuit 34 may be switched to an off state to disconnect the voltage detection circuit 3, cut off the charging or discharging process, and protect the battery cell 1; the second positive terminal 31 and the first negative terminal 22 are in contact and short-circuited, and at this time, the first protection circuit 33 may be switched to an off state to disconnect the voltage detection circuit 3, cut off the charging or discharging process, and protect the battery cell 1; third, the second negative terminal 32 is in contact with the first positive terminal 21 for short circuit, and at this time, the second protection circuit 34 may be switched to an off state to disconnect the voltage detection circuit 3, cut off the charging or discharging process, and protect the battery cell 1.
As shown in fig. 4, the first protection circuit 33 may include a first fuse, the second protection circuit 34 may include a second fuse, the voltage detection circuit 3 may further include a first resistor 35 and a second resistor 36, the first resistor 35 may be connected in series between the second positive terminal 21 and the positive electrode of the battery cell 1, for example, the first resistor 35 is connected in series between the first fuse and the positive electrode of the battery cell 1 in the embodiment of fig. 3; a second resistor 36 may be connected in series between the second negative terminal 22 and the negative electrode of the cell 1, for example, the second resistor 36 is connected in series between the second fuse and the negative electrode of the cell 1 in the embodiment of fig. 3.
Assume that the resistance of the first resistor 35 is R1, the resistance of the second resistor 36 is R2, the resistance of the first fuse is R3, the resistance of the second fuse is R4, and the internal resistance of the circuit protection module 2 is R5. Then, when the second positive terminal 31 and the second negative terminal 32 are short-circuited, the short-circuit current I1 is (V)Battery cell) /(R1+ R2+ R3+ R4); when the second positive terminal 31 is short-circuited in contact with the first negative terminal 22, the short-circuit current I2 is (V)Battery cell) /(R1+ R3+ R5) the second negative terminal 32 is short-circuited in contact with the first positive terminal 21, and the short-circuit current I3 is (V)Battery cell) /(R2+ R4+ R5), whereby the first resistance 35 and the second resistance can be designed according to the fusing characteristics of the first fuse and the second fuseThe resistance 36 is organized, so that the first fuse wire and the second fuse wire are fused after the short-circuit current I1 flows through the time length of T1, the voltage detection loop 3 is disconnected, the battery cell 1 cannot be charged, and the battery cell 1 is protected; the first fuse wire is fused after the short-circuit current I2 flows through the T2 for a period of time, the voltage detection loop 3 is disconnected, the battery cell 1 cannot be charged, and the battery cell 1 is protected; the second fuse wire is fused after the short-circuit current I3 flows through the T3, the voltage detection loop 3 is disconnected, the battery cell 1 cannot be charged, and the battery cell 1 is protected.
Of course, in other embodiments, the first resistor 35 may also be connected in series between the first fuse and the second positive terminal 31, and the second resistor 36 may also be connected in series between the second fuse and the second negative terminal 32, which is not limited by the disclosure.
In still other embodiments, the first protection circuit 33 may include a first circuit switch and the second protection circuit 34 may include a second circuit switch. The current ranges of the first circuit switch and the second circuit switch when the voltage detection circuit 3 is in the three abnormal states can be set in advance through tests, the first switch circuit and the second switch circuit can be controlled to be switched to the off state according to the current values flowing through the first switch circuit and the second switch circuit, so that the battery cell is protected, and compared with the technical scheme of arranging the first fuse wire and the second fuse wire, when the battery charging and discharging circuit 100 is maintained, the short-circuit lap joint electrode is separated, and the internal circuit of the voltage detection circuit 3 is not required to be maintained. Compared with the technical scheme of adopting the first switch circuit and the second switch circuit, the technical scheme of adopting the first fuse wire and the second fuse wire does not need to detect the current of the voltage detection loop 3, and is favorable for simplifying the circuit structure of the voltage detection loop 3.
In the above embodiment, the circuit protection module 23 may include a protection chip 231 and one or more field effect transistors 232 electrically connected to the protection chip 231, the one or more field effect transistors 232 may be connected in series between the first negative terminal 22 and the negative electrode of the battery cell 1, and the protection chip 231 may control a switching state of the field effect transistor 232 according to a charging condition for the battery cell 1, so as to open or close the charge and discharge loop. For example, when the battery cell 1 is in a charging overvoltage or a discharging overvoltage or a charging overcurrent or a discharging overcurrent, the field effect transistor is controlled to be turned off to protect the battery cell 1, and when the battery cell 1 is in a normal charging or discharging stage, the field effect transistor is turned off to ensure a normal charging and discharging process.
As shown in fig. 5, the voltage detection circuit 3 may further include a first capacitor 37 and a second capacitor 38, where one end of the first capacitor 37 is connected between the second positive terminal 31 and the positive electrode of the battery cell 1, and the other end is grounded, for example, in the embodiment shown in fig. 4, one end of the first capacitor 37 is connected between the first fuse and the second positive terminal 31; one end of the second capacitor 38 is connected between the second negative terminal 32 and the negative electrode of the battery cell 1, and the other end is grounded, for example, in the embodiment shown in fig. 4, the second capacitor 38 is connected between the second fuse and the second negative terminal 32. Based on this, the voltage detection circuit 3 can be electrostatically protected by the first capacitor 37 and the second capacitor 38. It should be noted that one end of the first capacitor 37 may also be connected to any position between the first fuse and the first resistor 33, or between the second positive terminal 31 and the positive terminal of the battery cell 1; one end of the second capacitor 38 may also be connected to any position between the second fuse and the second resistor 33, or between the second negative terminal 32 and the negative terminal of the battery cell 1. Wherein one end of the first capacitor 37 and one end of the second capacitor 38 are grounded, it can be understood that the first capacitor 37 and the second capacitor 38 are conducted to the ground, or one end of the first capacitor 37 and one end of the second capacitor 38 are connected to a low potential. For example, the first negative terminal 22 is connected to the negative electrode of the battery cell 1, and the potential thereof is relatively low, so that the other ends of the first capacitor 37 and the second capacitor 38 can also be connected between the first negative terminal 22 and the negative electrode of the battery cell 1 to perform electrostatic protection on the voltage detection circuit 3. It should be noted that, in other embodiments, the voltage detection circuit 3 may also include the first capacitor 37 or the second capacitor 38, which is not limited by the present disclosure.
Based on the battery charging and discharging circuit described in each of the above embodiments, the present disclosure also provides an electronic device, which may include the battery circuit described in any of the above embodiments. The electronic device may include a mobile phone terminal or a tablet terminal, and the disclosure is not limited thereto.
The present disclosure also provides a charging method, which is applied to the battery charging and discharging circuit according to any one of the above embodiments, as shown in fig. 6, the charging method may include the following steps:
in step 601, the voltage of the battery cell detected by the voltage detection circuit is acquired.
In step 602, a charging current of the charging and discharging circuit is adjusted according to the detected voltage of the battery cell.
In this embodiment, the charging current of the charge-discharge loop can be adjusted according to the voltage detected by the voltage detection loop, so as to control the charging process for the battery cell 1, avoid the voltage difference caused by the circuit protection module 2, facilitate prolonging the duration of constant-current charging, and improve the charging efficiency.
In a further embodiment, the first protection circuit of the voltage detection circuit 3 may include a first circuit switch, and the second protection circuit may include a second protection switch, so that the currents flowing through the first circuit switch and the second circuit switch may be obtained, and when the currents flowing through the first circuit switch and the second circuit switch are both within the first current setting range, it may be determined that the second positive terminal 31 and the second negative terminal 32 are in contact short circuit, so as to disconnect the first circuit switch and the second circuit switch, and further disconnect the voltage detection circuit 3, and protect the electric core 1; or when the current flowing through the first circuit switch is in the second current setting range, it may be determined that the second positive terminal 31 and the first negative terminal 22 are in contact short circuit, so as to disconnect the first circuit switch, and further disconnect the voltage detection circuit 3 to protect the electric core 1; or when the current flowing through the second circuit switch is in the third current setting range, it may be determined that the second negative terminal 32 and the first positive terminal 21 are in short circuit, so as to disconnect the second circuit switch, and further disconnect the voltage detection circuit 3 to protect the electric core 1. The first current setting range, the second current setting range, and the third current setting range may be pre-stored after being determined according to an experiment, and are related to the first resistor 35, the second resistor 36, and the resistances of the first circuit switch and the second circuit switch.
Corresponding to the embodiment of the charging method, the disclosure also provides an embodiment of a charging device.
Fig. 7 is a block diagram of a charging device according to an exemplary embodiment, which may be applied to the battery charging and discharging circuit shown in any of the above embodiments. Referring to fig. 7, the apparatus includes a first obtaining module 701 and an adjusting module 702, wherein:
a first obtaining module 701, configured to obtain a voltage of the battery cell detected by the voltage detection circuit;
the adjusting module 702 adjusts the charging current of the charging and discharging loop according to the detected voltage of the battery cell.
As shown in fig. 8, fig. 8 is a block diagram of another charging device according to an exemplary embodiment, which is based on the foregoing embodiment shown in fig. 7, wherein the first protection circuit includes a first circuit switch, and the second protection circuit includes a second circuit switch; the charging device further comprises a second obtaining module 703 and a control module 704, wherein:
a second obtaining module 703 for obtaining a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;
the control module 704 controls the first circuit switch and/or the second circuit switch to an off state when the first current and/or the second current are within a corresponding current setting range.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement it without inventive effort.
Correspondingly, this disclosure still provides a charging device, includes: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: acquiring the voltage of the battery cell detected by a voltage detection circuit; and adjusting the charging current of the charging and discharging loop according to the detected voltage of the battery core.
Accordingly, the present disclosure also provides a terminal comprising a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured for execution by the one or more processors to include instructions for: acquiring the voltage of the battery cell detected by a voltage detection circuit; and adjusting the charging current of the charging and discharging loop according to the detected voltage of the battery core.
Fig. 9 is a block diagram illustrating a charging device 900 according to an example embodiment. For example, the apparatus 900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 9, apparatus 900 may include one or more of the following components: processing component 902, memory 904, power component 906, multimedia component 908, audio component 910, input/output (I/O) interface 912, sensor component 914, and communication component 916.
The processing component 902 generally controls overall operation of the device 900, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processing component 902 may include one or more processors 920 to execute instructions to perform all or a portion of the steps of the methods described above. Further, processing component 902 can include one or more modules that facilitate interaction between processing component 902 and other components. For example, the processing component 902 can include a multimedia module to facilitate interaction between the multimedia component 908 and the processing component 902.
The memory 904 is configured to store various types of data to support operation at the apparatus 900. Examples of such data include instructions for any application or method operating on device 900, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 904 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 906 provides power to the various components of the device 900. The power components 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 900.
The multimedia component 908 comprises a screen providing an output interface between the device 900 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 908 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 900 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 910 is configured to output and/or input audio signals. For example, audio component 910 includes a Microphone (MIC) configured to receive external audio signals when apparatus 900 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 904 or transmitted via the communication component 916. In some embodiments, audio component 910 also includes a speaker for outputting audio signals.
I/O interface 912 provides an interface between processing component 902 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 914 includes one or more sensors for providing status assessment of various aspects of the apparatus 900. For example, sensor assembly 914 may detect an open/closed state of device 900, the relative positioning of components, such as a display and keypad of device 900, the change in position of device 900 or a component of device 900, the presence or absence of user contact with device 900, the orientation or acceleration/deceleration of device 900, and the change in temperature of device 900. The sensor assembly 914 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 916 is configured to facilitate communications between the apparatus 900 and other devices in a wired or wireless manner. The apparatus 900 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 916 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 916 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 900 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 904 comprising instructions, executable by the processor 920 of the apparatus 900 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (13)
1. A battery charging and discharging circuit, comprising:
an electric core;
the charging and discharging circuit comprises a first positive terminal, a first negative terminal and a circuit protection module, wherein the first positive terminal is conducted to the positive electrode of the battery cell, the first negative terminal is conducted to the negative electrode of the battery cell, and the circuit protection module is communicated between the first positive terminal and the positive electrode of the battery cell and between the first negative terminal and the negative electrode of the battery cell;
the voltage detection circuit comprises a second positive end, a second negative end, a first protection circuit and a second protection circuit, wherein the first protection circuit is connected in series between the second positive end and the positive electrode of the battery cell, the second protection circuit is connected in series between the second negative end and the negative electrode of the battery cell, the voltage detection circuit detects the voltage of the battery cell, and the first protection circuit and the second protection circuit are switched to a disconnection state when the voltage detection circuit is abnormal.
2. The battery charging and discharging circuit according to claim 1, wherein the first protection circuit comprises a first fuse and the second protection circuit comprises a second fuse.
3. The battery charging and discharging circuit of claim 1, wherein the voltage detection circuit further comprises a first resistor and a second resistor, the first resistor is connected in series between the second positive terminal and the positive electrode of the battery cell, and the second resistor is connected in series between the second negative terminal and the negative electrode of the battery cell.
4. The battery charging and discharging circuit according to claim 1, wherein the circuit protection module includes a protection chip and a fet connected to the protection chip, the fet is connected in series between the first negative terminal and the negative electrode of the battery cell, and the protection chip controls a switching state of the fet to open or close the charging and discharging circuit.
5. The battery charging and discharging circuit of claim 1, wherein the voltage detection circuit further comprises a first capacitor, one end of the first capacitor is connected between the second positive terminal and the positive electrode of the battery cell, and the other end of the first capacitor is grounded.
6. The battery charging and discharging circuit of claim 1, wherein the voltage detection circuit further comprises a second capacitor, one end of the second capacitor is connected between the second negative terminal and the negative electrode of the battery cell, and the other end of the second capacitor is grounded.
7. An electronic device comprising the battery charging and discharging circuit according to any one of claims 1 to 6.
8. A charging method applied to the battery charging and discharging circuit according to any one of claims 1 to 6, the charging method comprising:
acquiring the voltage of the battery cell detected by a voltage detection circuit;
and adjusting the charging current of the charging and discharging loop according to the detected voltage of the battery core.
9. The charging method according to claim 8, wherein the first protection circuit comprises a first circuit switch, the second protection circuit comprises a second circuit switch; the charging method further comprises:
acquiring a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;
and when the first current and/or the second current are/is within a corresponding current setting range, controlling the first circuit switch and/or the second circuit switch to be switched to an off state.
10. A charging device applied to the battery charging and discharging circuit according to any one of claims 1 to 6, comprising:
the first acquisition module is used for acquiring the voltage of the battery cell detected by the voltage detection circuit;
and the adjusting module is used for adjusting the charging current of the charging and discharging loop according to the detected voltage of the battery core.
11. The charging device of claim 10, wherein the first protection circuit comprises a first circuit switch and the second protection circuit comprises a second circuit switch; the charging device further includes:
the second acquisition module acquires a first current flowing through the first circuit switch and a second current flowing through the second circuit switch;
and the control module controls the first circuit switch and/or the second circuit switch to be switched to an off state when the first current and/or the second current are/is within a corresponding current setting range.
12. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method of claim 8 or 9.
13. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to carry out the steps of the method according to claim 8 or 9 when executed.
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| CN202010924203.5A CN114142543A (en) | 2020-09-04 | 2020-09-04 | Battery charging and discharging loop, charging method and device and electronic equipment |
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| CN202010924203.5A CN114142543A (en) | 2020-09-04 | 2020-09-04 | Battery charging and discharging loop, charging method and device and electronic equipment |
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