A battery control method, device and battery

Abstract

The application discloses a battery control method and device and a battery. The battery comprises a first negative pole lug and a second negative pole lug. The method comprises the following steps: acquiring detection information of the first negative pole lug and the second negative pole lug; determining a first parameter of the negative pole sheet based on the detection information; determining a charging parameter and / or a discharging parameter of the first battery based on the first parameter; and controlling charging or discharging of the first battery based on the charging parameter and / or the discharging parameter. The above scheme can determine the electrical parameter of the battery negative pole through the detection of the two negative pole lugs, objectively understand the performance state of the battery negative pole, and then timely adjust the charging and discharging strategy of the battery according to the current state of the battery negative pole, so as to ensure the use safety of the battery in an extreme environment and as far as possible prolong the service life of the battery.

Description

TECHNICAL FIELD

[0001] The present application relates to battery control technology, and more particularly, to a battery control method and device. BACKGROUND

[0002] In the field of batteries, the higher the proportion of silicon material added in the silicon-based negative electrode, the higher the energy density of the silicon-based negative electrode. However, an important factor restricting the development of the silicon-based negative electrode is that silicon is easily pulverized in the cycle, which easily causes ion channel blockage and a sharp increase in battery internal resistance, so that the problems of low initial efficiency, high expansion, cycle attenuation and the like of the battery will gradually be magnified with the increase of the proportion of silicon material in the silicon-based negative electrode. The foregoing problems can cause the occurrence of safety accidents such as thermal effect and crystallization. In this case, a reasonable battery charging and discharging control strategy is particularly important. SUMMARY

[0003] Therefore, the present application provides the following technical solutions.

[0004] A battery control method is applied to a first battery, a negative plate of the first battery includes a first negative tab and a second negative tab, and the method includes:

[0005] obtaining detection information of the first negative tab and the second negative tab;

[0006] determining a first parameter of the negative plate based on the detection information;

[0007] determining a charging parameter and / or a discharging parameter of the first battery based on the first parameter;

[0008] controlling charging or discharging of the first battery based on the charging parameter and / or the discharging parameter.

[0009] Optionally, the determining of the first parameter of the negative plate based on the detection information includes:

[0010] determining a voltage difference between the first negative tab and the second negative tab;

[0011] determining a current value of the first negative tab;

[0012] determining a resistance value of the negative plate based on the voltage difference and the current value.

[0013] Optionally, the determining of the charging parameter and / or the discharging parameter of the first battery based on the first parameter includes:

[0014] when the resistance value of the negative plate is in a first interval, a charging voltage of the first battery is a first charging voltage, and a discharging voltage of the first battery is a first discharging voltage;

[0015] When the resistance value of the negative plate is in the second interval, the charging voltage of the first battery is a second charging voltage, and the discharging voltage of the first battery is a second discharging voltage.

[0016] The value in the first interval is less than the value in the second interval, the first charging voltage is greater than the second charging voltage, and the first discharging voltage is less than the second discharging voltage.

[0017] Optionally, the determining the charging parameter and / or the discharging parameter of the first battery based on the first parameter comprises:

[0018] When the resistance value of the negative plate is greater than a first value, the first battery is controlled to stop charging and / or stop discharging.

[0019] Optionally, the method further comprises:

[0020] Determining a battery voltage value of the first battery based on detection information of the positive tab and the second negative tab of the first battery;

[0021] Controlling the first battery to charge based on the battery voltage value.

[0022] Optionally, after the determining the charging parameter and / or the discharging parameter of the first battery based on the first parameter, the method further comprises:

[0023] Adjusting power output data based on the determined charging parameter or the discharging parameter, the power output data being used for display output on a user interface.

[0024] Optionally, the adjusting the power output data based on the determined charging parameter or the discharging parameter comprises:

[0025] Adjusting the power output data based on a product of the determined charging parameter or the discharging parameter and a corresponding correction coefficient, so that the power output data of the first battery is 100% when fully charged and 0% when empty.

[0026] The application also discloses a battery control device applied to a first battery, wherein a negative plate of the first battery comprises a first negative tab and a second negative tab, and the device comprises:

[0027] An information acquisition module is configured to acquire detection information of the first negative tab and the second negative tab.

[0028] A first parameter determination module is configured to determine a first parameter of the negative plate based on the detection information.

[0029] A second parameter determination module is configured to determine a charging parameter and / or a discharging parameter of the first battery based on the first parameter.

[0030] a charge-discharge control module configured to control charging or discharging of the first battery based on the charging parameter and / or the discharging parameter.

[0031] Optionally, the first parameter determination module comprises:

[0032] a voltage difference determination module configured to determine a voltage difference between the first negative tab and the second negative tab;

[0033] a current determination module configured to determine a current value of the first negative tab;

[0034] a resistance value determination module configured to determine a resistance value of the negative tab based on the voltage difference and the current value.

[0035] Further, the application also discloses a battery, comprising an electric quantity meter and a controller, a negative tab of the battery comprises a first negative tab and a second negative tab,

[0036] the electric quantity meter is configured to acquire detection information of the first negative tab and the second negative tab;

[0037] the controller is configured to determine a first parameter of the negative tab based on the detection information;

[0038] determine a charging parameter and / or a discharging parameter of the first battery based on the first parameter;

[0039] control charging or discharging of the first battery based on the charging parameter and / or the discharging parameter.

[0040] Compared with the prior art, the application discloses a battery control method and device and a battery, wherein the battery comprises a first negative tab and a second negative tab, the method comprises the following steps: acquiring detection information of the first negative tab and the second negative tab; determining a first parameter of the negative tab based on the detection information; determining a charging parameter and / or a discharging parameter of the first battery based on the first parameter; and controlling charging or discharging of the first battery based on the charging parameter and / or the discharging parameter. The above scheme can determine the electrical parameter of the battery negative tab through two negative tabs, objectively understand the performance state of the battery negative tab, and then timely adjust the charging and discharging strategy of the battery according to the current state of the battery negative tab, thereby ensuring the use safety of the battery in extreme environments and prolonging the service life of the battery as much as possible. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0042] Figure 1 A flowchart of a battery control method disclosed by the embodiments of the present application;

[0043] Figure 2 A schematic diagram of detecting the state of the pole piece disclosed by the embodiments of the present application;

[0044] Figure 3 A flowchart of determining the first parameter disclosed by the embodiments of the present application;

[0045] Figure 4 A schematic diagram of the structure and working principle of the first battery disclosed by the embodiments of the present application;

[0046] Figure 5 A schematic diagram of the battery cycle performance curve before and after adopting the stepped charge-discharge strategy disclosed by the embodiments of the present application;

[0047] Figure 6 A schematic diagram of the parameter curve before and after the electric quantity correction based on the three-pole ear disclosed by the embodiments of the present application;

[0048] Figure 7 A schematic diagram of the implementation function architecture of the battery control method disclosed by the embodiments of the present application;

[0049] Figure 8 A schematic diagram of the structure of a battery control device disclosed by the embodiments of the present application. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0051] Figure 1 A flowchart of a battery control method disclosed by the embodiments of the present application. Figure 1 The method can be applied to a first battery, and a negative pole piece of the first battery includes a first negative pole ear and a second negative pole ear.

[0052] Referring to Figure 1 As shown, the method can include:

[0053] Step 101: Obtain detection information of the first negative tab and the second negative tab.

[0054] The negative tab on the first battery is provided with two negative tabs, the positions of the two negative tabs are different, and the electrical parameters on the two negative tabs can be detected. The electrical parameters can be, but are not limited to, voltage, current, etc. The detection information on the two negative tabs can be used to calculate and determine some information of the negative tab or the first battery, and then serve as a basis for determining the battery charging and discharging strategy. Figure 2 The schematic diagram for detecting the state of the tab is disclosed in the embodiment of the application, wherein Cathode is the positive tab, and anode is the negative tab; wherein the tab a can be understood as the first negative tab, and the tab c can be understood as the second negative tab. The structure and detection method of the negative tab double tabs can be understood in combination with Figure 2 The structure and detection method of the negative tab double tabs can be understood in combination with

[0055] It can be understood that when there is only one negative tab, the negative tab needs to pass current during the working process. When the negative tab is connected to a large current, the voltage value detected at the negative tab will deviate, affecting the accuracy of the detection result. In the embodiment of the application, two negative tabs are arranged on the negative tab of the battery, one of which can pass current, and the other of which cannot pass current, so as to accurately detect the voltage value on the negative tab.

[0056] The detection information obtained from the two negative tabs of the first battery can be transmitted to the battery power gauge. The corresponding control chip performs corresponding calculation processing based on the obtained detection information, and manages the subsequent battery charging and discharging based on the result.

[0057] Step 102: Determine the first parameter of the negative tab based on the detection information.

[0058] The first parameter can be the resistance value of the negative tab. Specifically, the process of determining the first parameter can be referred to in Figure 3 . Figure 3 A flow chart for determining the first parameter is disclosed in the embodiment of the application. As shown in Figure 3 , the determination of the first parameter based on the detection information can include:

[0059] Step 301: Determine the voltage difference between the first negative tab and the second negative tab.

[0060] Step 302: Determine the current value of the first negative tab.

[0061] Step 303: Determine the resistance value of the negative tab based on the voltage difference and the current value.

[0062] As introduced in the foregoing, one of the two negative tabs can pass current, and the other one cannot pass current. In the present implementation, the current flows through the first negative tab, and the second negative tab does not pass current.

[0063] In the present implementation, the resistance of the negative tab is determined, and the resistance of the negative tab is determined based on the formula R=U / I. U is the voltage difference between the first negative tab and the second negative tab; and I is the current value of the first negative tab. It can be understood that, in order to obtain the real resistance of the negative tab as accurately as possible, the two negative tabs should be as far apart as possible and be in a relative side state.

[0064] In the present implementation, the battery control method can determine the health status of the battery by detecting the resistance of the determined negative tab, and give appropriate charging logic according to the detected battery information. Figure 4 The first battery structure and working principle of the embodiment of the present application are disclosed, wherein the PCM protection plate is a protection circuit module circuit board. Figure 2 and Figure 4 As shown in the drawings, the voltage difference between the detection tab a and the tab c is detected, and the resistance of the negative tab is calculated by combining the current entering the electric power. The resistance value is recorded in the electric power meter, and the step charging and discharging current can be designed according to the different internal resistance values of the negative tab, so as to maintain the normal working state of the battery for a long time.

[0065] After step 102, step 103 is entered.

[0066] Step 103: determining the charging parameter and / or discharging parameter of the first battery based on the first parameter.

[0067] The resistance of the negative tab reflects the health status of the negative tab, and also directly affects the working performance and safe use of the battery. Therefore, in the present implementation, after the resistance of the negative tab is determined by detecting the two negative tabs arranged on the battery negative tab, whether the current battery charging and discharging strategy and standard are appropriate and whether there is a safety hazard can be determined based on the resistance of the negative tab.

[0068] When the resistance of the negative tab increases, it represents that the battery is aging, at which time the charging and discharging strategy of the battery should be adjusted in time to avoid the occurrence of heat effect, crystallization, battery capacity diving and the like. The present application introduces the double-tab structure of the negative tab, which can quickly respond to the change of the negative tab by real-time detection of the two negative tabs, and adjust the charging and discharging scheme in real time. Specifically, after the resistance of the negative tab is determined, the charging parameter and / or discharging parameter of the battery can be calculated and determined based on the pre-set algorithm.

[0069] Step 104: controlling the charging or discharging of the first battery based on the charging parameter and / or discharging parameter.

[0070] After the charging parameter and / or the discharging parameter suitable for the current negative tab resistance value are determined, the charging process and the discharging process of the first battery can be directly controlled based on the determined parameters.

[0071] The battery control method described in the embodiment determines the electrical parameters of the battery negative electrode through the two negative tabs arranged on the battery negative tab, objectively understands the performance state of the battery negative electrode, and then adjusts the charging and discharging strategy of the battery in a timely manner according to the current state of the battery negative electrode, which not only ensures the use safety of the battery in extreme environments, but also prolongs the service life of the battery as much as possible.

[0072] In the above embodiment, the determination of the charging parameter and / or the discharging parameter of the first battery based on the first parameter can include: when the resistance value of the negative tab is in a first interval, the charging voltage of the first battery is a first charging voltage, and the discharging voltage of the first battery is a first discharging voltage; when the resistance value of the negative tab is in a second interval, the charging voltage of the first battery is a second charging voltage, and the discharging voltage of the first battery is a second discharging voltage.

[0073] Among them, the value in the first interval is less than the value in the second interval, the first charging voltage is greater than the second charging voltage, and the first discharging voltage is less than the second discharging voltage.

[0074] When the resistance value of the negative tab increases, it represents that the battery is aging, in this case, a more moderate charging and discharging strategy should be selected, that is, the corresponding charging cutoff voltage and charging and discharging current are reduced, and the discharging cutoff voltage is increased. Table 1 and Table 2 respectively give an exemplary charging strategy and discharging strategy of a three-tab battery, which is a step charging and discharging strategy, that is, different charging and discharging cutoff voltages and charging and discharging currents are used when the resistance value of the negative tab is in different intervals.

[0075] Table 1 Charging strategy of three-tab battery

[0076]

[0077] Table 2 Discharging strategy of three-tab battery

[0078]

[0079] In addition, the modification scheme of the electrical parameters in the UI display interface of the electronic device is also given in Table 1 and Table 2. Specifically, the electrical parameters displayed in the UI display interface can be adjusted accordingly with the adjustment of the charging and discharging cutoff voltage, which can be achieved by multiplying the corresponding correction coefficient, so that no matter the resistance value of the negative tab is in which interval, the battery will display 100% when fully charged, and 0% when empty, without jumping.

[0080] Based on this, after determining the charging parameter and / or discharging parameter of the first battery based on the first parameter, it may further include: adjusting the power output data based on the determined charging parameter or discharging parameter, and the power output data is used for display and output on the user interface. Specifically, it may be to adjust the power output data based on the product of the determined charging parameter or discharging parameter and the corresponding correction coefficient, so that the power output data of the first battery when fully charged is 100%, and the power output data when fully discharged is 0%.

[0081] For example, in an example of a charging scenario, when the resistance value of the negative electrode plate is in the range of X mΩ ≤ R < X + 10 mΩ, the charging voltage V = Vmax - 50 mV, and the power C displayed on the UI interface = 1.08 * Cfull; when the resistance value of the negative electrode plate is in the range of X + 10 mΩ ≤ R < X + 40 mΩ, the charging voltage V = V max - 200 mV, the charging current I = 0.8 * I charge , and the power C displayed on the UI interface = 1.28 * C full .

[0082] In an example of a discharging scenario, when the resistance value of the negative electrode plate is in the range of X mΩ ≤ R < X + 10 mΩ, the discharging voltage V = V min + 50 mV, and when the resistance value of the negative electrode plate is in the range of X + 10 mΩ ≤ R < X + 40 mΩ, the discharging voltage V = V min + 200 mV, I = 0.8I discharge .

[0083] It should be noted that the above Table 1, Table 2 and the related text introduction content only exist as an example in the embodiments and do not constitute a fixed limitation on the charge-discharge strategy. In practical applications, in combination with the battery characteristics and the requirements of control accuracy, the interval division of the resistance value of the negative electrode plate and the setting of the charge-discharge parameters in each interval can be reasonably set by oneself.

[0084] The above stepped charge-discharge strategy for the battery is a long-term protection strategy for battery use, and its implementation effect can be seen in Figure 5 as shown. Figure 5 This is a schematic diagram of the battery cycle performance curves before and after adopting the stepped charge-discharge strategy disclosed in the embodiments of the present application; among them, the curve No. 1 is the battery cycle performance curve without using the stepped charge-discharge strategy, and the curve No. 2 is the battery cycle performance curve using the stepped charge-discharge strategy. Combining Figure 5 as shown, under the conventional charge-discharge control of the battery, the capacity drops rapidly after the 800th cycle (corresponding to the curve No. 1); after the battery samples the above stepped charge-discharge strategy, the battery capacity always remains in a relatively stable state (corresponding to the curve No. 2).

[0085] It can also be seen from Table 1 and Table 2 that when the resistance value of the negative plate is greater than the first value (corresponding to the interval of R≥X+40mΩ in the table), the first battery is controlled to stop charging and / or discharging. Since when the resistance value of the negative plate reaches a certain value, if the battery continues to be charged and discharged, it is likely to cause a safety accident of the battery, therefore in this case, the battery needs to be directly controlled to prohibit charging and discharging.

[0086] In the application of silicon-based negative electrodes, since the volume change of silicon-based negative electrodes is relatively large during the charging and discharging cycle of the battery, the capacity is more likely to suddenly and sharply decrease, causing the battery to suddenly become unusable; and this situation cannot be detected in a conventional battery including only one positive and one negative tab. The one positive and two negative three-tab structure of the present application can respond to the change of the negative plate in time through corresponding detection and processing when the resistance value of the negative plate increases sharply, so as to adjust the charging and discharging scheme in time or even prohibit charging and discharging, so that the battery will not have a safety accident. The above implementation of prohibiting charging and discharging is a short-term protection strategy for the use of the battery.

[0087] On the basis of the foregoing embodiment, the battery control method can further include determining a battery voltage value of the first battery based on the detection information of the positive tab and the second negative tab of the first battery; and controlling the first battery to charge based on the battery voltage value.

[0088] Since the second negative tab does not pass current, detecting the potential difference between the positive tab and the second negative tab can more truly reflect the cell voltage of the battery. Because when the tab is connected to a large current, the battery has a plan, and the voltage of the tab a and the tab b will be artificially high, causing the battery to enter the constant voltage stage too early, and the entire charging time to be lengthened.

[0089] Figure 6 The parameter curve schematic diagram before and after the electric quantity correction based on the three-tab disclosed in the embodiments of the present application is shown. The No. 1 curve represents the voltage curve after voltage compensation based on the three-tab; the No. 2 curve represents the voltage curve before voltage compensation based on the three-tab; the No. 3 curve represents the current curve after voltage compensation based on the three-tab; and the No. 4 curve represents the current curve before voltage compensation based on the three-tab.

[0090] In combination Figure 6 As shown in the figure, in the conventional implementation, the battery power meter estimates a correction coefficient to perform voltage compensation, but often this correction method is not flexible and accurate enough; and the second negative tab introduced in the present application can accurately detect the voltage value of the cell in real time, and ultimately achieve the effect of shortening the charging time.

[0091] The skilled in the art can know that, in the battery charging process, constant current charging is first performed, the battery is charged to a fixed voltage value by constant current, and then constant voltage charging is performed; in the process of constant voltage charging, the charging current gradually decreases. The voltage compensation scheme realized by the three-pole lug in the present application can obviously shorten the time of constant voltage charging compared with the scheme without voltage compensation; in Figure 6 , the time for the current value of curve 3 to drop to a certain value is 18 minutes earlier than the time for the current value of curve 4 to drop to the certain value.

[0092] The above battery control method provided by the embodiments of the present application is based on the three-pole lug structure design of one positive and two negative poles, can detect the health state of the negative pole sheet of the battery in real time, obtain the internal resistance and voltage of the negative pole sheet of the battery in real time, and then control the charging and discharging strategy of the battery based on the detection result, adjust the cell impedance compensation, and maximize the use safety of the battery, thereby improving the user experience.

[0093] Figure 7 The implementation process effect schematic diagram of the battery control method disclosed in the embodiments of the present application is shown. As shown in Figure 7 , by detecting the lug electrical parameters of the one positive and two negative three-pole lug battery, on the one hand, the internal resistance value of the negative pole sheet can be determined, and then the charging and discharging strategy is adjusted based on the health state of the negative pole sheet, so that the occurrence of battery crystallization and capacity diving can be avoided in the short-term effect, and the battery charging and discharging strategy is corrected at any time with the increase of the charging and discharging cycle number, thereby prolonging the service life of the battery; on the other hand, the real voltage of the battery can also be determined through the detection of the lug electrical parameters, and the charging and discharging strategy is adjusted based on the real battery voltage, accurate voltage compensation can be performed in the process, the influence of current polarization is eliminated, the battery voltage is fed back truly, the charging time of the battery is shortened, and the user experience is improved. Figure 7 The foregoing technical content described in the foregoing is summarized, and a relatively complete implementation of the present application scheme can be understood in combination with Figure 7 .

[0094] For the foregoing method embodiments, in order to simply describe, they are all expressed as a series of action combinations, but the skilled in the art should know that the present application is not limited by the action sequence described, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, the skilled in the art should also know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0095] The method is described in detail in the foregoing embodiments disclosed in the present application, and the method of the present application can be implemented in various forms of devices, therefore the present application also discloses a device, and the specific embodiments are given below to be described in detail.

[0096] Figure 8 FIG. 1 is a structural schematic diagram of a battery control device according to an embodiment of the present application. As shown in FIG. 1, the battery control device 80 can include: Figure 8

[0097] The information acquisition module 801 is configured to acquire detection information of the first negative tab and the second negative tab.

[0098] The first parameter determination module 802 is configured to determine a first parameter of the negative tab based on the detection information.

[0099] The second parameter determination module 803 is configured to determine a charging parameter and / or a discharging parameter of the first battery based on the first parameter.

[0100] The charging and discharging control module 804 is configured to control charging or discharging of the first battery based on the charging parameter and / or the discharging parameter.

[0101] The battery control device according to the embodiment can determine the electrical parameter of the battery negative tab by detecting the two negative tabs arranged on the battery negative tab, and objectively understand the performance state of the battery negative tab. Then, the charging and discharging strategy of the battery can be adjusted in a timely manner according to the current state of the battery negative tab, which not only ensures the use safety of the battery in an extreme environment, but also prolongs the service life of the battery as much as possible.

[0102] In one implementation, the first parameter determination module includes: a voltage difference determination module configured to determine a voltage difference between the first negative tab and the second negative tab; a current determination module configured to determine a current value of the first negative tab; and a resistance value determination module configured to determine a resistance value of the negative tab based on the voltage difference and the current value.

[0103] In one implementation, the charging and discharging control module can be specifically configured to: when the resistance value of the negative tab is in a first interval, the charging voltage of the first battery is a first charging voltage, and the discharging voltage of the first battery is a first discharging voltage; when the resistance value of the negative tab is in a second interval, the charging voltage of the first battery is a second charging voltage, and the discharging voltage of the first battery is a second discharging voltage; wherein the values in the first interval are smaller than the values in the second interval, the first charging voltage is greater than the second charging voltage, and the first discharging voltage is smaller than the second discharging voltage.

[0104] In one implementation, the charging and discharging control module can be specifically configured to: when the resistance value of the negative tab is greater than a first value, control the first battery to stop charging and / or stop discharging.

[0105] ​In one implementation, the charge and discharge control module can be further configured to determine a battery voltage value of the first battery based on the detection information of the first positive tab and the second negative tab, and control the first battery to be charged based on the battery voltage value.

[0106] In one implementation, the battery control apparatus can further include a UI control module configured to adjust power output data based on the determined charging parameter or the determined discharging parameter, the power output data being used for display output on a user interface.

[0107] Specifically, the battery control module can be configured to adjust the power output data based on a product of the determined charging parameter or the determined discharging parameter and a corresponding correction coefficient, so that the power output data of the first battery is 100% when the first battery is fully charged and 0% when the first battery is empty.

[0108] Any of the battery control apparatuses in the above embodiments includes a processor and a memory, and the information acquisition module, the first parameter determination module, the second parameter determination module, the charge and discharge control module, the voltage difference determination module, the current determination module, the resistance determination module, and the UI control module in the above embodiments are stored in the memory as program modules, and the corresponding functions are realized by the processor executing the program modules stored in the memory.

[0109] The processor includes a core, and the core retrieves the corresponding program modules from the memory. The core can be set to one or more, and the processing of the revisit data is realized by adjusting the core parameters.

[0110] The memory can include a non-permanent memory in a computer readable medium, a random access memory (RAM), and / or a non-volatile memory such as a read-only memory (ROM) or a flash memory (flash RAM), and the memory includes at least one memory chip.

[0111] In an exemplary embodiment, a computer readable storage medium directly loadable into the internal memory of a computer is also provided, which contains software codes. The computer program can be loaded and executed by a computer to realize the steps of any of the above battery control methods.

[0112] In an exemplary embodiment, a computer program product directly loadable into the internal memory of a computer is also provided, which contains software codes. The computer program can be loaded and executed by a computer to realize the steps of any of the above battery control methods.

[0113] Further, the embodiments of the present application provide a battery including a power gauge and a controller, and a negative tab of the battery includes a first negative tab and a second negative tab.

[0114] The coulometer is configured to acquire detection information of the first negative tab and the second negative tab.

[0115] The controller is configured to determine a first parameter of the negative tab based on the detection information.

[0116] The first parameter is used to determine a charging parameter and / or a discharging parameter of the first battery.

[0117] The charging parameter and / or the discharging parameter is used to control charging or discharging of the first battery.

[0118] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0119] It should also be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by an "including a" statement does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0120] The steps of the methods or algorithms described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0121] The above description of disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1.A battery control method applied to a first battery, a negative tab of the first battery comprising a first negative tab and a second negative tab, the method comprising: obtaining detection information of the first negative tab and the second negative tab, the detection information of the first negative tab and the second negative tab being electrical parameters of the first negative tab and the second negative tab; determining a first parameter of the negative tab based on the electrical parameters of the first negative tab and the second negative tab, the first parameter of the negative tab being a basis for determining a charging and discharging strategy of the first battery; determining a charging parameter and / or a discharging parameter of the first battery based on the first parameter; controlling charging or discharging of the first battery based on the charging parameter and / or the discharging parameter; wherein the determining the first parameter of the negative tab based on the electrical parameters of the first negative tab and the second negative tab comprises: determining a voltage difference between the first negative tab and the second negative tab; determining a current value of the first negative tab; and determining a resistance value of the negative tab based on the voltage difference and the current value. 2.The battery control method of claim 1, wherein the determining the charging parameter and / or the discharging parameter of the first battery based on the first parameter comprises: when the resistance value of the negative tab is in a first interval, a charging voltage of the first battery is a first charging voltage, and a discharging voltage of the first battery is a first discharging voltage; and when the resistance value of the negative tab is in a second interval, the charging voltage of the first battery is a second charging voltage, and the discharging voltage of the first battery is a second discharging voltage; wherein a value in the first interval is less than a value in the second interval, the first charging voltage is greater than the second charging voltage, and the first discharging voltage is less than the second discharging voltage. 3.The battery control method of claim 2, wherein the determining the charging parameter and / or the discharging parameter of the first battery based on the first parameter comprises: when the resistance value of the negative tab is greater than a first value, controlling the first battery to stop charging and / or stop discharging. 4.The battery control method of claim 1, further comprising: determining a battery voltage value of the first battery based on the detection information of a positive tab and the second negative tab of the first battery; and controlling the first battery to charge based on the battery voltage value. 5.The battery control method of claim 1, after the determining the charging parameter and / or the discharging parameter of the first battery based on the first parameter, further comprising: adjusting power output data based on the determined charging parameter or the discharging parameter, the power output data being used for display output on a user interface. 6.The battery control method of claim 5, wherein the adjusting the power output data based on the determined charging parameter or the discharging parameter comprises: adjusting the power output data based on a product of the determined charging parameter or the discharging parameter and a corresponding correction coefficient, so that the power output data of the first battery is 100% when fully charged and 0% when empty. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 7.A battery control device applied to a first battery, wherein a negative tab of the first battery comprises a first negative tab and a second negative tab, and the device comprises: an information acquisition module configured to acquire detection information of the first negative tab and the second negative tab, wherein the detection information of the first negative tab and the second negative tab is an electrical parameter of the first negative tab and the second negative tab; a first parameter determination module configured to determine a first parameter of the negative tab based on the electrical parameter of the first negative tab and the second negative tab, wherein the first parameter of the negative tab is used as a basis for determining a charging and discharging strategy of the first battery; a second parameter determination module configured to determine a charging parameter and / or a discharging parameter of the first battery based on the first parameter; a charging and discharging control module configured to control charging or discharging of the first battery based on the charging parameter and / or the discharging parameter; wherein the first parameter determination module comprises: a voltage difference determination module configured to determine a voltage difference between the first negative tab and the second negative tab; a current determination module configured to determine a current value of the first negative tab; a resistance value determination module configured to determine a resistance value of the negative tab based on the voltage difference and the current value. 8.A battery comprising a coulometer and a controller, wherein a negative tab of the battery comprises a first negative tab and a second negative tab; the coulometer is configured to acquire detection information of the first negative tab and the second negative tab, wherein the detection information of the first negative tab and the second negative tab is an electrical parameter of the first negative tab and the second negative tab; the controller is configured to determine a first parameter of the negative tab based on the electrical parameter of the first negative tab and the second negative tab, wherein the first parameter of the negative tab is used as a basis for determining a charging and discharging strategy of the battery; determine a charging parameter and / or a discharging parameter of the battery based on the first parameter; control charging or discharging of the battery based on the charging parameter and / or the discharging parameter; wherein the determination of the first parameter of the negative tab based on the electrical parameter of the first negative tab and the second negative tab comprises: determination of a voltage difference between the first negative tab and the second negative tab; determination of a current value of the first negative tab; determination of a resistance value of the negative tab based on the voltage difference and the current value.

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