CN111613762B - Battery pack, electronic device, and charge/discharge control method - Google Patents
Battery pack, electronic device, and charge/discharge control method Download PDFInfo
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- CN111613762B CN111613762B CN201910131738.4A CN201910131738A CN111613762B CN 111613762 B CN111613762 B CN 111613762B CN 201910131738 A CN201910131738 A CN 201910131738A CN 111613762 B CN111613762 B CN 111613762B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The embodiment of the application provides a battery pack, electronic equipment and a charging and discharging control method. A battery pack, comprising: the battery cell comprises at least two battery cell monomers which are connected in series, a first connecting end and a second connecting end which are connected with the battery cell monomers, wherein the first connecting end and the second connecting end are respectively positioned on different side surfaces of the battery pack and are used for connecting a charging circuit or a discharging circuit; the first lug of one battery cell monomer arranged on the same side face of the battery pack is connected with the second lug of the other battery cell monomer in series and then is connected with the first connecting end or the second connecting end, so that the charging and discharging efficiency of the battery pack can be improved.
Description
Technical Field
The present disclosure relates to the field of computer technologies, and in particular, to a battery pack, an electronic device, and a charge/discharge control method.
Background
Electronic devices play an increasingly important role in human life, and the development of charging technology for electronic devices is becoming faster and faster. The capacity of the battery pack equipped for the electronic device is also increasing to meet the demand of longer standby time.
Generally, when the battery pack is charged or the electronic device is powered by the battery pack, a charging circuit or a discharging circuit may be disposed on the same side of the battery pack, and the charging and discharging tasks are performed on the same side of the battery pack by connecting tabs disposed on the same side of the battery pack to the charging circuit and the discharging circuit. However, this method causes an increase in current path during charging and discharging, and thus causes an excessive heat loss during charging and discharging, thereby limiting the charging and discharging speed.
Disclosure of Invention
The embodiment of the application provides a battery pack, an electronic device and a charging and discharging control method, which can improve charging and discharging efficiency.
A battery pack, comprising: at least two battery cell monomers which are connected in series with each other, and a first connecting end and a second connecting end which are connected with the battery cell monomers, wherein the first connecting end and the second connecting end are respectively positioned on different side surfaces of the battery pack and are both used for connecting a charging circuit or a discharging circuit, wherein,
the battery cell comprises a first end part, a second end part, a first lug arranged at least at the first end part and a second lug arranged at the second end part, wherein the polarity of the second lug is opposite to that of the first lug;
The first pole lug of one battery cell monomer arranged on the same side face of the battery pack is connected with the second pole lug of the other battery cell monomer in series and then is connected with the first connecting end or the second connecting end.
An electronic device, comprising the above battery pack, further comprising: the first charging circuit and the first discharging circuit are connected with the first connecting end, and the second charging circuit and the second discharging circuit are connected with the second connecting end.
A charge and discharge control method is applied to a battery pack including a first connection end and a second connection end, and includes:
detecting charge and discharge modes of the battery pack, wherein the charge and discharge modes comprise a first charge mode, a second charge mode, a first discharge mode and a second discharge mode;
and outputting a corresponding control instruction according to the charging and discharging mode to enable the battery pack to be in a charging state or a discharging state, wherein the control instruction is used for connecting or disconnecting the battery pack with the first connecting end, or connecting or disconnecting the battery pack with the second connecting end.
According to the battery pack, the electronic equipment and the charge and discharge control method, different side faces of the battery pack can be connected with the charging circuit or the discharging circuit through the first connecting end or the second connecting end, so that the two different side faces of the battery pack can execute charge and discharge operations, the current path of the charging process and the discharging process is greatly shortened, power consumption and heat generated by current passing through the path are reduced, high-power charge and discharge can be realized, the charging speed is further accelerated, and the charge and discharge power can be greatly improved. Meanwhile, the charging and discharging ports (the first connecting end and the second connecting end) of the battery pack are not limited, and the flexibility of the application of the battery pack is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a battery pack in one embodiment;
fig. 2a to 2d are schematic structural diagrams of a cell unit in an embodiment;
fig. 3a-3b are schematic structural diagrams of a dual-cell battery pack according to an embodiment;
fig. 4a-4b are schematic structural diagrams of a dual-cell battery pack in yet another embodiment;
fig. 5 is a schematic structural view of a dual cell battery pack in still another embodiment;
FIG. 6 is a schematic diagram of an electronic device in one embodiment;
FIG. 7 is a flowchart of a charge and discharge control method according to an embodiment;
fig. 8 is a block diagram of a partial structure of a mobile phone related to an electronic device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first tab may be referred to as the second tab, and similarly, the second tab may be referred to as the first tab, without departing from the scope of the present application. The first tab and the second tab are both tabs, but they are not the same tab.
The application provides a group battery is applied to electronic equipment, and this electronic equipment can charge for this group battery by external adapter, and simultaneously, this group battery also can be for this electronic equipment power supply. The electronic equipment can also be provided with a charging circuit for charging the battery pack and a discharging circuit for supplying power to a module to be powered in the electronic equipment through the battery pack.
As shown in fig. 1, in one embodiment, a battery pack includes: the battery comprises at least two battery cell units 10 connected in series, and a first connecting end 20 and a second connecting end 30 connected with the battery cell units 10.
In one embodiment, the first connection terminal 20 can be used for connecting a charging circuit or a discharging circuit, and the second connection terminal 30 can also be used for connecting a charging circuit or a discharging circuit. Wherein. The charging circuit includes a first charging circuit and a second charging circuit. The first charging circuit and the second charging circuit may be understood as circuits provided in the electronic device, which may be used to receive the charging current or the charging voltage output by the adapter, and thus charge the battery pack. The discharging circuit includes a first discharging circuit and a second discharging circuit, and the first discharging circuit and the second discharging circuit can be understood as circuits arranged in the electronic device, and can be used for receiving charging current or charging voltage output by the battery pack so as to supply power to a module to be powered in the electronic device.
The first connection terminal 20 and the second connection terminal 30 are respectively located at non-lateral sides of the battery pack. For example, the first connection end 20 may be located at a first side surface S1 of the battery pack, and the second connection end 30 may be located at a second side surface S2 of the battery pack, wherein the first side surface S1 is opposite to the second side surface S2.
In an embodiment, the first connection terminal 20 may be used to connect to a first charging circuit or a first discharging circuit located at the first side S1. The second connection terminal 30 may be used to connect a second charging circuit or a second discharging circuit located at the second side S2.
In an embodiment, the battery cell 10 includes a first end 10a and a second end 10b, and a first tab 110 protruding at least from the first end 10a and a second tab 120 protruding at least from the second end 10b, where the polarity of the second tab 120 is opposite to that of the first tab 110.
The cell unit 10 may include a first tab 110 protruding from the first end 10a and a second tab 120 protruding from the second end 10b, as shown in fig. 2 a. The battery cell 10 may further include a first tab 110 protruding from the first end 10a, a second tab 120, and a second tab 120 protruding from the second end 10b, as shown in fig. 2 b. The cell unit 10 may further include a first tab 110 protruding from the first end 10a, and a first tab 110 and a second tab 120 protruding from the second end 10b, as shown in fig. 2 c. The battery cell 10 may further include a first tab 110 and a second tab 120 extending from the first end 10a, and a first tab 110 and a second tab 120 extending from the second end 10b, as shown in fig. 2 d.
In one embodiment, the first tab 110 may be a positive tab, and the second tab 120 may be a negative tab.
Optionally, the first tab 110 may be a negative tab, and the second tab 120 may be a positive tab.
In one embodiment, the cell unit 10 may include a wound positive electrode sheet, a wound negative electrode sheet, and a separator disposed between the positive electrode sheet and the negative electrode sheet. The positive plate extending out of the cell unit 10 serves as a positive tab, and the negative plate extending out of the cell unit 10 serves as a negative tab. In the manufacturing process of the cell unit, firstly, the positive plate, the diaphragm and the negative plate are sequentially stacked, then the structure is wound, and the wound structure extends out of the first end portion 10a and the second end portion 10b of the cell unit, so that the first tab 110 and the second tab 120 are formed.
In one embodiment, the positive tab is a copper sheet plated with a nickel layer on the surface, and the negative tab is an aluminum sheet. The nickel layer can be used as a protection layer of the copper sheet so as to avoid the conditions that the internal resistance is increased and the conductivity is deteriorated due to the oxidation of the copper sheet. The aluminum sheet has high conductivity, when heavy current passes through, the temperature rise of the lug is low, the hardness of the aluminum sheet is low, the diaphragm or the adjacent electric core is not easy to pierce, and the safety performance of the battery pack is improved.
The battery pack may include at least two battery cells 10 connected in series with each other. The number of the battery cell units 10 may be 2, 3, 4, or more. At least two cell units 10 connected in series with each other may be understood as two adjacent cell units 10 connected in series, that is, the first tab 110 of one of the adjacent cell units 10 on either side of the battery pack is connected to the second tab 120 of the other cell unit 10.
The first tab 110 of one of the battery cells 10 disposed on the same side of the battery pack is connected in series with the second tab 120 of another battery cell 10, and then connected to the first connection end 20 or the second connection end 30. For example, after the first tab 110 of one of the battery cells 10 on the first side S1 of the battery pack is connected in series with the second tab 120 of another battery cell 10, and is connected to the first connection end 20, the plurality of battery cells after being connected in series can be connected to the first charging circuit or the first discharging circuit, and meanwhile, after the first tab 110 of one of the battery cells 10 on the second side S2 of the battery pack is connected in series with the second tab 120 of another battery cell 10, the plurality of battery cells after being connected in series can be connected to the second charging circuit or the second discharging circuit.
The first side S1 of group battery in this embodiment can be connected with first charging circuit or first discharge circuit through first link 20, and simultaneously, the second side S2 of group battery can be connected with second charging circuit or second discharge circuit through second link 30, so that the operation of charge and discharge can all be carried out to two different sides of this group battery, the electric current route of charging process and discharge process has been shortened greatly, reduce consumption and heat that the electric current produced through the route, can realize powerful charge and discharge, further accelerate the charging speed, can increase substantially charge and discharge power. Meanwhile, the charge and discharge port (the first connection terminal 20 and the second connection terminal 30) arrangement of the battery pack is not limited, and the flexibility of the applicable battery pack is improved.
As shown in fig. 3a and 3b, in one embodiment, the battery pack includes a first cell 10-1 and a second cell 10-2 connected in series. The first cell unit 10-1 and the second cell unit 10-2 each include a first tab 110 disposed at the first end 10a and a second tab 120 disposed at the second end 10 b. The first tab 110 is a positive tab, and the second tab 120 is a negative tab. The first end 10a of the first cell 10-1 and the second end 10b of the second cell 10-2 are located on the same side of the battery pack, for example, the first side S1 of the battery pack. The second end 10b of the first cell 10-1 and the first end 10a of the second cell 10-2 are both located on the same side of the battery pack, for example, the second side S2 of the battery pack.
The first tab 110 of the first battery cell unit 10-1 located on the same side of the battery pack is connected to the second tab 120 of the second battery cell unit 10-2, and then connected to the first connection end 20 of the battery pack, where the first connection end 20 is used to connect to a first charging circuit. The second tab 120 of the first battery cell 10-1 located on the same side of the battery pack is connected to the first tab 110 of the second battery cell 10-2, and then connected to the second connection end 30 of the battery pack, where the second connection end 30 is used to connect to a second discharge circuit, referring to fig. 3 a.
Optionally, the first tab 110 of the first battery cell unit 10-1 located on the same side of the battery pack is connected to the second tab 120 of the second battery cell unit 10-2, and then connected to the first connection end 20 of the battery pack, where the first connection end 20 is used to connect to a first discharge circuit. The second tab 120 of the first battery cell unit 10-1 located on the same side of the battery pack is connected to the first tab 110 of the second battery cell unit 10-2, and then connected to the second connection terminal 30 of the battery pack, where the second connection terminal 30 is used to connect to a second charging circuit, referring to fig. 3 b.
In this embodiment, the battery pack includes two battery cell monomers 10, wherein, two tabs of each battery cell monomer 10 are respectively located two upper and lower ends of the battery cell monomer 10, two battery cell monomers 10 are through being located the battery pack with one side just, the negative pole tab series connection back, again with the first link 20 that sets up in the battery pack both sides, the second link 30 is connected, can be connected with the charging circuit or the discharge circuit that set up in electronic equipment inside respectively, so that two different sides of this battery pack can all carry out the operation of charge and discharge, the current path of charging process and discharge process has been shortened greatly, reduce consumption and the heat that the electric current produced through the path, can realize powerful charge and discharge, further accelerate the charging speed, can increase substantially charge and discharge power. Meanwhile, the charge and discharge port (the first connection terminal 20 and the second connection terminal 30) arrangement of the battery pack is not limited, and the flexibility of the applicable battery pack is improved.
In one embodiment, the battery pack further includes a first connection module 40 and a second connection module 50. The first connection module 40 is disposed at a first side S1 of the battery pack, and is configured to selectively connect or disconnect the battery cells 10 and the first connection end 20; and the second connection module 50 is arranged on the second side surface S2 of the battery pack and is used for selectively connecting or disconnecting the battery cells 10 and the second connection end 30.
In one embodiment, the first connection module 40 includes a first controller therein and the second connection module 50 includes a second controller therein. The first controller is connected with the first charging circuit, the first discharging circuit, the first connection end 20 and the second controller respectively, and the first controller can identify the current charging and discharging state of the battery pack and output a corresponding control instruction to the second controller according to the charging and discharging state, so that the second controller can selectively connect or disconnect the second connection end 30 and the battery cell single body 10, and can also selectively connect or disconnect the first connection end 20 and the battery cell single body 10. Correspondingly, the second controller is respectively connected with the second charging circuit, the second discharging circuit and the second connecting end 30, and the second controller can identify the current charging and discharging state of the battery pack and output a corresponding control instruction to the first controller according to the charging and discharging state, so that the first controller controls to switch on or off the connection between the first connecting end 20 and the battery cell single body 10, and simultaneously, the connection between the second connecting end 30 and the battery cell single body 10 can be selected to be switched on or off.
For example, when the first charging circuit external adapter charges the battery pack, the first controller in the first connection module 40 may recognize that the current charging/discharging state of the battery pack is a charging state, select to turn on the connection between the first connection end 20 and the battery cell unit 10, and output a corresponding control instruction to the second controller, so that the second controller disconnects the connection between the second connection end 30 and the battery cell unit 10, and further charge the battery pack through the adapter. When the battery pack supplies power to a module to be powered in the electronic device through the second discharge circuit, the second controller in the second connection module 50 may recognize that the current charge-discharge state of the battery pack is a discharge state, select to turn on the connection between the second connection terminal 30 and the electric core single body 10, and output a corresponding control instruction to the first controller, so that the first controller disconnects the connection between the first connection terminal 20 and the electric core single body 10, and then supply power to the module to be powered in the electronic device through the battery pack.
For example, when the external adapter of the second charging circuit charges the battery pack, the second controller in the second connection module 50 may recognize that the current charging/discharging state of the battery pack is a charging state, select to turn on the connection between the second connection terminal 30 and the battery cell unit 10, and output a corresponding control instruction to the first controller, so that the first controller disconnects the connection between the first connection terminal 20 and the battery cell unit 10, and further charge the battery pack through the adapter.
When the battery pack supplies power to a module to be powered in the electronic device through the first discharge circuit, the first controller in the first connection module 40 may recognize that the current charge-discharge state of the battery pack is a discharge state, select to turn on the connection between the first connection end 20 and the electric core single body 10, and output a corresponding control instruction to the second controller, so that the second controller disconnects the connection between the second connection end 30 and the electric core single body 10, thereby supplying power to the module to be powered in the electronic device through the battery pack.
In this embodiment, the charging and discharging states of the battery pack can be identified by the first controller disposed in the first connection module 40 and the second controller disposed in the second connection module 50, and then the charging and discharging states are controlled in cooperation with each other, that is, when the first connection end 20 is connected to the first charging circuit or the first discharging circuit, the second connection end 30 can be disconnected from the battery cell unit 10 by the second controller, or when the second connection end 30 is connected to the second charging circuit or the second discharging circuit, the first connection end 20 can be disconnected from the battery cell unit 10 by the first controller. In this implementation, the operation of charge and discharge can all be carried out to two different sides of group battery, has shortened the current path of charging process and discharge process greatly, reduces consumption and the heat that the electric current produced through the route, can realize powerful charge and discharge, has further accelerated the speed of charging, can increase substantially charge and discharge power. Meanwhile, the charge and discharge port (the first connection terminal 20 and the second connection terminal 30) arrangement of the battery pack is not limited, and the flexibility of the applicable battery pack is improved.
In an embodiment, the first connection module 40 is further provided with a first protection circuit connected to the first charging circuit and the first discharging circuit, respectively. The first protection circuit is used for protecting the first charging circuit and the first discharging circuit. Correspondingly, a second protection circuit connected to the second charging circuit and the second discharging circuit is further disposed on the second connection module 50. The second protection circuit is used for protecting the second charging circuit and the second discharging circuit.
The first protection circuit and the second protection circuit have different structures and functions.
In this embodiment, adopt two sets of independent first protection circuit and second protection circuit, first protection circuit protects first charging circuit, first discharge circuit respectively, and the second protection circuit includes second discharge circuit and second charging circuit, can have corresponding professional protection of carrying on, makes the protection better, helps prolonging the life-span of group battery, improves the security of group battery, and then improves the security of each discharge circuit and each charging circuit.
As shown in fig. 4a and 4b, in one embodiment, the battery pack includes a first cell 10-1 and a second cell 10-2 connected in series. The first cell unit 10-1 includes a first tab 110 and a second tab 120 disposed at the first end 10a, and a second tab 120 disposed at the second end 10 b. The second battery cell 10-2 includes a first tab 110 disposed at the first end 10a, and a first tab 110 and a second tab 120 disposed at the second end 10 b. The first tab 110 is a positive tab, and the second tab 120 is a negative tab. The first end 10a of the first cell 10-1 and the second end 10b of the second cell 10-2 are both located on the same side of the battery pack, for example, the first side S1; the second end 10b of the first cell 10-1 and the first end 10a of the second cell 10-2 are located on the same side of the battery pack, such as the second side S2.
A second tab 120 located at the first end 10a in the first cell unit 10-1 is connected to a first tab 110 located at the second end 10b in the second cell unit 10-2, the first tab 110 located at the first end 10a in the first cell unit 10-1 is connected to a second tab 120 located at the second end 10b in the second cell unit 10-2 and then connected to the first connection end 20, and the second tab 120 located at the second end 10b in the first cell unit 10-1 is connected to the first tab 110 located at the first end 10a in the second cell unit 10-2 and then connected to the second connection end 30.
In one embodiment, the first connection terminal 20 is used for connecting a first charging circuit, and the second connection terminal 30 is used for connecting a second discharging circuit, referring to fig. 4 a. In one embodiment, the battery pack also includes the first connection module 40, the second connection module 50, the first controller, and the second controller of the above-described embodiments.
For example, when the external adapter of the first charging circuit charges the battery pack, the charging current or the charging voltage of the first charging circuit directly enters from the positive tab of the first battery cell unit 10-1, then enters from the negative tab of the first battery cell unit 10-1 to the positive tab of the second battery cell unit 10-2, and finally is connected to the first charging circuit from the negative tab of the second battery cell unit 10-2, so that a complete charging loop is formed. Meanwhile, the first controller can recognize that the current charge-discharge state of the battery pack is a charge state, and then outputs a corresponding control instruction to the second controller, so that the second controller disconnects the second connection end 30 from the battery cell unit 10, and the battery pack is charged through the adapter. When the battery pack supplies power to a module to be powered in the electronic device through the second discharge circuit, the first controller in the first connection module 40 may recognize that the current charge-discharge state of the battery pack is a discharge state, and then output a corresponding control instruction to the second controller, so that the second controller switches on the connection between the second connection terminal 30 and the electric core unit 10, and further supplies power to the module to be powered in the electronic device through the battery pack.
In one embodiment, the first connection terminal 20 is used for connecting a first discharging circuit, and the second connection terminal 30 is used for connecting a second charging circuit, referring to fig. 4 b. In one embodiment, the battery pack also includes the first connection module 40, the second connection module 50, the first controller, and the second controller of the above embodiments.
For example, when the external adapter of the second charging circuit charges the battery pack, the second controller may recognize that the current charging/discharging state of the battery pack is the charging state, and then output a corresponding control instruction to connect the second connection end 30 to the cell body 10, and output a corresponding control instruction to the first controller, so that the first controller disconnects the first connection end 20 from the cell body 10, and further charge the battery pack through the adapter. When the battery pack supplies power to a module to be powered in the electronic device through the first discharge circuit, the first controller in the first connection module 40 may recognize that the current charge-discharge state of the battery pack is a discharge state, may switch on the connection between the first connection end 20 and the cell unit 10, and output a corresponding control instruction to the second controller, so that the second controller disconnects the connection between the second connection end 30 and the cell unit 10, and further supplies power to the module to be powered in the electronic device through the battery pack.
In this embodiment, the charging and discharging states of the battery pack can be identified by the first controller disposed in the first connection module 40 and the second controller disposed in the second connection module 50, and then the charging and discharging states are controlled in cooperation with each other, that is, when the first connection end 20 is connected to the first charging circuit or the first discharging circuit, the second connection end 30 can be disconnected from the battery cell unit 10 by the second controller, or when the second connection end 30 is connected to the second charging circuit or the second discharging circuit, the first connection end 20 can be disconnected from the battery cell unit 10 by the first controller. In the implementation, two different side surfaces of the battery pack can execute charging and discharging operations, so that a current path in the charging process and the discharging process is greatly shortened, power consumption and heat generated by current passing through the path are reduced, high-power charging and discharging can be realized, the charging speed is further accelerated, and the charging and discharging power can be greatly improved. Meanwhile, the charge and discharge port (the first connection terminal 20 and the second connection terminal 30) arrangement of the battery pack is not restricted any more, and the flexibility of the battery pack application is improved.
As shown in fig. 5, in an embodiment, the battery pack includes a first cell 10-1 and a second cell 10-2 connected in series with each other. The first cell unit 10-1 and the second cell unit 10-2 each include a first tab 110 and a second tab 120 disposed at the first end 10a, and a first tab 110 and a second tab 120 disposed at the second end 10 b. The first tab 110 is a positive tab, and the second tab 120 is a negative tab. The first end 10a of the first cell 10-1 and the second end 10b of the second cell 10-2 are both located on the same side of the battery pack, for example, the first side S1; the second end 10b of the first cell 10-1 and the first end 10a of the second cell 10-2 are located on the same side of the battery pack, such as the second side S2.
A second tab 120 located at the first end portion 10a in the first battery cell unit 10-1 is connected to a first tab located at the second end portion 10b in the second battery cell unit 10-2, and a first tab 110 located at the first end portion 10a in the first battery cell unit 10-1 is connected to a second tab 120 located at the second end portion 10b in the second battery cell unit 10-2 and then connected to the first connection end 20. Meanwhile, a first tab 110 of the first cell unit 10-1 located at the second end 10b is connected to a second tab 120 of the second cell unit 10-2 located at the first end 10a, and a second tab 120 of the first cell unit 10-1 located at the second end 10b is connected to a first tab 110 of the second cell unit 10-2 located at the first end 10a and then connected to the second connection end 30.
In one embodiment, the battery pack also includes the first connection module 40, the second connection module 50, the first controller, and the second controller of the above embodiments.
In this embodiment, the charging and discharging states of the battery pack can be identified by the first controller disposed in the first connection module 40 and the second controller disposed in the second connection module 50, and then the charging and discharging states are controlled in cooperation with each other, that is, when the first connection end 20 is connected to the first charging circuit or the first discharging circuit, the second connection end 30 can be disconnected from the battery cell unit 10 by the second controller, or when the second connection end 30 is connected to the second charging circuit or the second discharging circuit, the first connection end 20 can be disconnected from the battery cell unit 10 by the first controller. In this implementation, the operation of charge and discharge can all be carried out to two different sides of group battery, has shortened the current path of charging process and discharge process greatly, reduces consumption and the heat that the electric current produced through the route, can realize powerful charge and discharge, has further accelerated the speed of charging, can increase substantially charge and discharge power. Meanwhile, the charge and discharge port (the first connection terminal 20 and the second connection terminal 30) arrangement of the battery pack is not restricted any more, and the flexibility of the battery pack application is improved.
As shown in fig. 6, an embodiment of the present application further provides an electronic device, including the battery pack in any of the above embodiments, further including: a first charging circuit 620 and a first discharging circuit 630 connected to a first connection terminal 610a of the battery pack 610, and a second charging circuit 640 and a second discharging circuit 650 connected to a second connection terminal 610b of the battery pack 610.
The first charging circuit 620 and the second charging circuit 640 may be understood as circuits provided in the electronic device, which may be used to receive the charging current or the charging voltage output by the adapter, and thus charge the battery pack. The first discharge circuit 630 and the second discharge circuit 650 may be understood as circuits disposed in the electronic device, which may be used to receive a charging current or a charging voltage output by the battery pack, thereby supplying power to a module to be powered in the electronic device.
In one embodiment, the first charging circuit 620 and the first discharging circuit 630 may be disposed near the first connection terminal 610a of the battery pack 610, and the second charging circuit 640 and the second discharging circuit 650 may be disposed near the second connection terminal 610b of the battery pack 610.
The first side of group battery in this embodiment accessible first link 610a is connected with first charging circuit 620 or first discharge circuit 630, and simultaneously, the second side of group battery accessible second link 610b is connected with second charging circuit 640 or second discharge circuit 650, so that two different sides of this group battery 610 can all carry out the operation of charge-discharge, the electric current route of charging process and discharge process has been shortened greatly, reduce consumption and the heat that the electric current produced through the route, can realize powerful charge-discharge, charging speed has further accelerated, can increase substantially charge-discharge power. Meanwhile, the charge and discharge port (the first connection terminal 610a and the second connection terminal 610b) arrangement of the battery pack 610 is not limited any more, and the flexibility of the applicable battery pack is improved.
The embodiment of the application also provides a charge and discharge control method, which is applied to a battery pack comprising a first connecting end and a second connecting end, wherein the battery pack is built in the electronic equipment. The electronic equipment comprises a battery pack, a first charging circuit and a first discharging circuit which are connected with a first connecting end of the battery pack, and a second charging circuit and a second discharging circuit which are connected with a second connecting end of the battery pack.
Fig. 7 is a flowchart of a charge/discharge control method according to an embodiment. In one embodiment, the charge and discharge control method includes steps 702 to 704, where:
In an embodiment, the electronic device may detect whether the first charging circuit and the second charging circuit have the external adapter. When the first charging circuit is externally connected with the adapter, the charging and discharging mode is a first charging mode; when the second charging circuit is externally connected with the adapter, the charging and discharging mode is the second charging mode. When the first charging circuit and the second charging circuit are not externally connected with an adapter and supply power to a module to be powered of the electronic equipment through the first discharging circuit, the charging and discharging mode is a first discharging mode; when the first charging circuit and the second charging circuit are not externally connected with an adapter and supply power to the module to be powered of the electronic equipment through the second discharging circuit, the charging and discharging mode is the second discharging mode.
In one embodiment, when the first charging circuit or the second charging circuit is connected to the adapter, the electronic device may perform bidirectional communication with the adapter, receive an inquiry command sent by the adapter, where the inquiry command is used to inquire whether the electronic device starts the charging mode, and send a confirmation command to the adapter according to the inquiry command, so as to identify the charging mode of the adapter.
The control instruction is used for connecting or disconnecting the battery pack and the first connecting end, or connecting or disconnecting the battery pack and the second connecting end.
In one embodiment, a battery pack includes: the battery pack comprises at least two battery cell monomers which are connected in series, and a first connecting end and a second connecting end which are connected with the battery cell monomers, wherein the first connecting end is positioned on a first side surface of the battery pack, and the second connecting end is positioned on a second side surface of the battery pack. The first connecting end is used for connecting a first charging circuit or a first discharging circuit; the second connecting end is used for connecting a second charging circuit or a second discharging circuit. The battery cell comprises a first end part, a second end part, a first lug arranged at least at the first end part and a second lug arranged at the second end part, wherein the polarity of the second lug is opposite to that of the first lug; the first pole lug of one single battery cell arranged on the same side face of the battery pack is connected with the second pole lug of the other single battery cell in series and then is connected with the first connecting end or the second connecting end.
When the charging and discharging mode of the battery pack is the first charging mode or the first discharging mode, the first connection end of the battery pack can be controlled to be connected with the battery cell monomer in a conduction mode, and the second connection end of the battery pack is controlled to be disconnected with the battery cell monomer, so that the battery pack is in a charging state or a discharging state.
When the charge-discharge mode of the battery pack is the second charge mode or the second discharge mode, the first connection end of the battery pack can be controlled to be disconnected from the battery cell monomer, and the second connection end of the battery pack is controlled to be connected with the battery cell monomer, so that the battery pack is in a charge state or a discharge state.
The charging control method detects the charging and discharging modes of the battery pack, wherein the charging and discharging modes comprise a first charging mode, a second charging mode, a first discharging mode and a second discharging mode; and outputting a corresponding control instruction according to the charging and discharging mode to enable the battery pack to be in a charging state or a discharging state, so that the charging and discharging efficiency is improved.
It should be understood that, although the steps in the flowchart of fig. 7 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 7 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of the charging control method.
A computer program product containing instructions which, when run on a computer, cause the computer to perform a charging control method.
The embodiment of the application also provides the electronic equipment. The electronic device includes: the charging control device comprises a battery unit and the charging control device in any one of the above embodiments connected with the battery unit. As shown in fig. 8, for convenience of explanation, only the parts related to the embodiments of the present application are shown, and details of the technology are not disclosed, please refer to the method part of the embodiments of the present application. The electronic device may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, a wearable device, and the like, taking the electronic device as a mobile phone as an example:
fig. 8 is a block diagram of a partial structure of a mobile phone related to an electronic device provided in an embodiment of the present application. Referring to fig. 8, the handset includes: radio Frequency (RF) circuit 810, memory 820, input unit 830, display unit 840, sensor 850, audio circuit 860, wireless fidelity (WiFi) module 780, processor 880, and power supply 890. Those skilled in the art will appreciate that the handset configuration shown in fig. 8 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The RF circuit 810 may be used for receiving and transmitting signals during information transmission and reception or during a call, and may receive downlink information of a base station and then process the downlink information to the processor 880; the uplink data may also be transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 810 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE)), e-mail, Short Messaging Service (SMS), and the like.
The memory 820 may be used to store software programs and modules, and the processor 880 executes various functional applications and data processing of the cellular phone by operating the software programs and modules stored in the memory 820. The memory 820 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as an application program for a sound playing function, an application program for an image playing function, and the like), and the like; the data storage area may store data (such as audio data, an address book, etc.) created according to the use of the mobile phone, and the like. Further, the memory 820 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The input unit 830 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone 800. Specifically, the input unit 830 may include a touch panel 831 and other input devices 832. The touch panel 831, which may also be referred to as a touch screen, may collect touch operations performed by a user on or near the touch panel 831 (e.g., operations performed by the user on the touch panel 831 or near the touch panel 831 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a preset program. In one embodiment, the touch panel 831 can include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it to touch point coordinates, and sends the touch point coordinates to the processor 880, and can receive and execute commands from the processor 880. In addition, the touch panel 831 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 830 may include other input devices 832 in addition to the touch panel 831. In particular, other input devices 832 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), and the like.
The display unit 840 may be used to display information input by the user or information provided to the user and various menus of the cellular phone. The display unit 840 may include a display panel 841. In one embodiment, the Display panel 841 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. In one embodiment, touch panel 831 can overlay display panel 841, and when touch panel 831 detects a touch operation thereon or nearby, communicate to processor 880 to determine the type of touch event, and processor 880 can then provide a corresponding visual output on display panel 841 based on the type of touch event. Although in fig. 8, the touch panel 831 and the display panel 841 are two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 831 and the display panel 841 may be integrated to implement the input and output functions of the mobile phone.
The cell phone 800 may also include at least one sensor 850, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 841 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 841 and/or the backlight when the mobile phone is moved to the ear. The motion sensor can comprise an acceleration sensor, the acceleration sensor can detect the magnitude of acceleration in each direction, the magnitude and the direction of gravity can be detected when the mobile phone is static, and the motion sensor can be used for identifying the application of the gesture of the mobile phone (such as horizontal and vertical screen switching), the vibration identification related functions (such as pedometer and knocking) and the like; the mobile phone may be provided with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor.
The audio circuitry 860, speaker 861 and microphone 862 may provide an audio interface between the user and the handset. The audio circuit 860 can transmit the electrical signal converted from the received audio data to the speaker 861, and the electrical signal is converted into a sound signal by the speaker 861 and output; on the other hand, the microphone 862 converts the collected sound signal into an electrical signal, which is received by the audio circuit 860 and then converted into audio data, and then the audio data is output to the processor 880 for processing, and then the audio data is sent to another mobile phone through the RF circuit 810, or the audio data is output to the memory 820 for subsequent processing.
WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 780, and provides wireless broadband internet access for the user. Although fig. 8 shows a WiFi module 780, it is understood that it does not belong to the essential components of the handset 800 and may be omitted as desired.
The processor 880 is a control center of the mobile phone, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 820 and calling data stored in the memory 820, thereby integrally monitoring the mobile phone. In one embodiment, processor 880 may include one or more processing units. In one embodiment, the processor 880 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, and the like; the modem processor handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 880.
The cell phone 800 also includes a power supply 890 (e.g., a battery) for powering the various components, which may be logically coupled to the processor 880 via a power management system that may be used to manage charging, discharging, and power consumption. The power supply 890 includes a plurality of battery cells 40 and a plurality of switch units connected to the plurality of battery cells 40 in a one-to-one correspondence, and the power supply 890 may be a charging control device in the embodiment of the present application.
In one embodiment, the cell phone 800 may also include a camera, a bluetooth module, and the like.
In the embodiment of the present application, the processor 880 included in the electronic device implements the steps of the charging control method when executing the computer program stored in the memory.
Any reference to memory, storage, database or other medium used herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus (Rambus) direct RAM (RDRAM), direct bused dynamic RAM (DRDRAM), and bused dynamic RAM (RDRAM).
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (7)
1. A battery pack, comprising: the battery pack comprises at least two battery cell monomers which are connected in series, and a first connecting end and a second connecting end which are connected with the battery cell monomers, wherein the first connecting end and the second connecting end are respectively positioned on different side surfaces of the battery pack, and the first connecting end is used for connecting a first charging circuit and a first discharging circuit; the second connecting end is used for connecting a second charging circuit and a second discharging circuit;
the battery cell comprises a first end part, a second end part, a first lug arranged at least at the first end part and a second lug arranged at the second end part, wherein the polarity of the second lug is opposite to that of the first lug;
The battery pack comprises a first battery cell and a second battery cell which are connected in series; the first battery cell unit comprises a first tab and a second tab which are arranged at the first end part and a second tab which is arranged at the second end part, and the second battery cell unit comprises a first tab which is arranged at the first end part and a first tab and a second tab which are arranged at the second end part; the first end of the first battery cell and the second end of the second battery cell are both positioned on the same side of the battery pack,
a second tab located at a first end portion in the first cell monomer is connected with a first tab located at a second end portion in the second cell monomer, the first tab located at the first end portion in the first cell monomer is connected with a second tab located at the second end portion in the second cell monomer and then connected with a first connecting end, and the second tab located at the second end portion in the first cell monomer is connected with the first tab located at the first end portion in the second cell monomer and then connected with a second connecting end;
a first connection module disposed at a first side of the battery pack, the first connection module including a first controller;
A second connection module disposed at a second side of the battery pack, the second connection module including a second controller;
the first controller is respectively connected with the first charging circuit, the first discharging circuit, the first connecting end and the second controller, and is used for identifying a charging and discharging mode of the battery pack, selectively connecting or disconnecting the first connecting end with the battery cell monomer according to the charging and discharging mode, and outputting a corresponding control instruction to the second controller according to the charging and discharging mode so that the second controller selectively connects or disconnects the second connecting end with the battery cell monomer;
the second controller is respectively connected with the second charging circuit, the second discharging circuit, the second connecting end and the first controller, and is used for identifying a charging and discharging mode of the battery pack, selectively switching on or off the connection between the second connecting end and the battery cell monomer according to the charging and discharging mode, and outputting a corresponding control instruction to the first controller according to the charging and discharging mode, so that the first controller selectively switches on or off the connection between the second connecting end and the battery cell monomer.
2. The battery pack of claim 1, wherein the first cell further comprises a first tab disposed at the second end, wherein the second cell further comprises a second tab disposed at the first end, wherein,
and a first tab positioned at the second end part in the first battery cell monomer is connected with a second tab positioned at the first end part in the second battery cell monomer, and a second tab positioned at the second end part in the first battery cell monomer is connected with a first tab positioned at the first end part in the second battery cell monomer and then connected with the second connecting end of the battery pack, which is used for connecting the discharge circuit or the discharge circuit.
3. The battery pack according to any one of claims 1 to 2,
the first connection module is used for selectively connecting or disconnecting the connection between the battery cell monomer and the first connection end;
the second connection module is configured to selectively turn on or off the connection between the battery cell unit and the second connection end, where the first side surface and the second side surface are arranged opposite to each other.
4. The battery pack of claim 3, wherein the first connection module further comprises a first protection circuit, and the second connection module further comprises a second protection circuit; wherein the content of the first and second substances,
The first protection circuit is used for protecting the charging circuit or the discharging circuit which is arranged adjacent to the first connection module;
the second protection circuit is used for protecting the charging circuit or the discharging circuit which is arranged adjacent to the second connection module.
5. The battery pack according to claim 1, wherein the first tab is a positive tab and the second tab is a negative tab, or wherein the first tab is a negative tab and the second tab is a positive tab.
6. An electronic device comprising the battery pack according to any one of claims 1 to 5, further comprising: the first charging circuit and the first discharging circuit are connected with the first connecting end, and the second charging circuit and the second discharging circuit are connected with the second connecting end.
7. A charge and discharge control method applied to the battery pack according to any one of claims 1 to 5, comprising:
detecting charge and discharge modes of the battery pack, wherein the charge and discharge modes comprise a first charge mode, a second charge mode, a first discharge mode and a second discharge mode;
and outputting a corresponding control instruction according to the charging and discharging mode to enable the battery pack to be in a charging state or a discharging state, wherein the control instruction is used for connecting or disconnecting the battery pack with the first connecting end, or connecting or disconnecting the battery pack with the second connecting end.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131738.4A CN111613762B (en) | 2019-02-22 | 2019-02-22 | Battery pack, electronic device, and charge/discharge control method |
| PCT/CN2020/075175 WO2020168980A1 (en) | 2019-02-22 | 2020-02-14 | Battery pack, electronic device and charge/discharge control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910131738.4A CN111613762B (en) | 2019-02-22 | 2019-02-22 | Battery pack, electronic device, and charge/discharge control method |
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| CN114006059A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技有限公司 | Battery module and battery pack with same |
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| WO2020168980A1 (en) | 2020-08-27 |
| CN111613762A (en) | 2020-09-01 |
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