Electronic device

Abstract

The utility model discloses electronic equipment, and belongs to the technical field of electronics. The electronic equipment comprises a battery, a temperature detection unit, a power management unit, a battery control unit and a main control unit, the battery comprises at least two battery cells; the temperature detection unit is used for detecting the environment temperature of the at least two battery cells; the signal input end of the power management unit is connected with the temperature detection unit, the signal output end is connected with the signal input end of the main control unit, and the cathode is connected with the cathode of the battery cell; the battery control unit comprises at least two control switches, and the at least two control switches are in one-to-one correspondence with the at least two battery cells and are connected in series between the power supply management unit and the corresponding battery cells; the main control unit comprises at least two signal output ends, and the at least two signal output ends are in one-to-one correspondence with the at least two control switches and are connected with the corresponding control switches. On the basis of the at least two battery cells and the environment temperature thereof, the battery cell for supplying power to the electronic equipment is switched, so that different scene requirements are met.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to an electronic device. Background Art

[0002] In winter, the external temperature often drops below zero. Since the batteries used in some electronic devices cannot fully discharge their power at low temperatures, the electronic devices may fail to turn on or their standby working time may be shortened. Similarly, if users use electronic devices in high external temperatures, some batteries cannot fully discharge their power. In addition, high temperatures will not only cause electronic devices to shut down during use, but also have a serious impact on the battery life. Utility Model Content

[0003] In order to meet the power consumption requirements of electronic devices in different application scenarios, the present application provides an electronic device. The technical solution is as follows:

[0004] The present application provides an electronic device, the electronic device comprising: a battery, a temperature detection unit, a power management unit, a battery control unit and a main control unit;

[0005] The battery comprises at least two battery cells, and the at least two battery cells comprise at least two of a low-temperature battery cell, a normal-temperature battery cell and a high-temperature battery cell, the low-temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is less than or equal to a first temperature threshold, the normal-temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is greater than the first temperature threshold and less than a second temperature threshold, and the high-temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is greater than or equal to the second temperature threshold;

[0006] The temperature detection unit is used to detect the ambient temperature of the at least two battery cells;

[0007] The signal input end of the power management unit is connected to the temperature detection unit, the signal output end of the power management unit is connected to the signal input end of the main control unit, the negative electrode of the power management unit is connected to the negative electrode of the battery cell, and the power management unit is used to transmit the ambient temperature of the at least two battery cells to the main control unit;

[0008] The battery control unit comprises at least two control switches, the at least two control switches correspond to the at least two battery cells one by one, and the control switches are connected in series between the power management unit and the corresponding battery cells;

[0009] The main control unit includes at least two signal output terminals, and the at least two signal output terminals of the main control unit correspond one-to-one to the at least two control switches. The signal output terminals of the main control unit are connected to the corresponding control switches. The main control unit is used to control the opening or closing of the corresponding control switches according to the ambient temperature of the battery cell, so as to disconnect or conduct the path between the battery cell and the power management unit.

[0010] Optionally, the battery further comprises at least two battery protection plates, and the at least two battery protection plates correspond one to one to the at least two battery cells;

[0011] The battery protection board comprises a board body, the board body has a groove, and the battery cell is located in the corresponding groove of the battery protection board;

[0012] The battery protection board also includes a protection circuit, which has a first positive electrode, a second positive electrode, a first negative electrode and a second negative electrode; the positive electrode of the battery cell is connected to the first positive electrode of the protection circuit of the corresponding battery protection board, and the negative electrode of the battery cell is connected to the first negative electrode of the protection circuit of the corresponding battery protection board; the control switch is connected in series between the positive electrode of the power management unit and the second positive electrode of the protection circuit of the corresponding battery protection board, and the negative electrode of the power management unit is connected to the second negative electrode of the protection circuit of the battery protection board.

[0013] Optionally, the electronic device comprises at least two of the temperature detection units, the at least two of the temperature detection units correspond one-to-one to the at least two battery protection boards, and the temperature detection unit is integrated in the corresponding battery protection board;

[0014] The battery protection board also includes a temperature transmission line, and the temperature transmission line of the battery protection board is respectively connected to the corresponding signal input ends of the temperature detection unit and the power management unit.

[0015] Optionally, the electronic device further comprises at least two battery connectors, and the at least two battery connectors correspond one-to-one to the at least two battery protection boards;

[0016] The battery connector includes a male head and a female head that are plug-matched, one of the male head and the female head is connected to the protection circuit and the temperature transmission line of the corresponding battery protection board, and the other of the male head and the female head is connected to the positive pole, negative pole and signal input terminal of the power management unit.

[0017] Optionally, the battery further comprises a battery protection plate, the battery protection plate comprises a plate body, the plate body has a groove, and the at least two battery cells are both located in the groove;

[0018] The battery protection board also includes a protection circuit, the protection circuit having at least two first positive electrodes and at least two first negative electrodes corresponding to the at least two battery cells, and a second positive electrode and a second negative electrode, the first positive electrode is connected to the positive electrode of the corresponding battery cell, the first negative electrode is connected to the negative electrode of the corresponding battery cell, the second positive electrode is connected to the positive electrode of the power management unit, and the second negative electrode is connected to the negative electrode of the power management unit;

[0019] The at least two control switches are integrated in the protection circuit of the battery protection board, and the control switches are connected in series between the second positive electrode and the corresponding first positive electrode of the protection circuit.

[0020] Optionally, the temperature detection unit is integrated into the battery protection board;

[0021] The battery protection board also includes a temperature transmission line, and the temperature transmission line is respectively connected to the signal input end of the temperature detection unit and the signal input end of the power management unit.

[0022] Optionally, the electronic device further comprises a battery connector, wherein the battery connector comprises a male connector and a female connector for plugging and matching;

[0023] One of the male connector and the female connector is connected to the protection circuit and the temperature transmission line, and the other of the male connector and the female connector is connected to the positive pole, the negative pole and the signal input terminal of the power management unit, and the two signal output terminals of the main control unit.

[0024] Optionally, the at least two battery cells are stacked;

[0025] The at least two battery cells include the low-temperature battery cell, the low-temperature battery cell is located on a side away from the outer casing of the electronic device, and the other battery cells among the at least two battery cells except the low-temperature battery cell are located on a side close to the outer casing of the electronic device, and an insulation layer is provided between the low-temperature battery cell and the other battery cells.

[0026] Optionally, a heat dissipation layer is provided around the low-temperature battery core.

[0027] Optionally, the heat dissipation layer is U-shaped.

[0028] The beneficial effects of the technical solution provided by this application are:

[0029] The battery in the electronic device includes at least two cells, and the at least two cells include at least two of a low-temperature cell, a normal-temperature cell, and a high-temperature cell, and the temperature detection unit detects the ambient temperature of the at least two cells, and the main control unit can control the opening or closing of the corresponding control switch according to the ambient temperature of the at least two cells, so as to open or open the path between the at least two cells and the power management unit. In summary, the technical solution provided by the present application can switch to the cell that powers the electronic device according to the working characteristics of the at least two cells and their ambient temperature, thereby meeting the power demand of the electronic device in different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the structure of another electronic device provided in an embodiment of the present application;

[0032] Figure 3 is a structural schematic diagram of another electronic device provided in an embodiment of the present application;

[0033] Figure 4 This is a schematic diagram of a structure in which at least two battery cells are stacked and placed in layers, provided in an embodiment of the present application;

[0034] Figure 5 This is another schematic diagram of a structure in which at least two battery cells are stacked and placed in layers, provided in an embodiment of the present application;

[0035] Figure 6 This is another schematic diagram of a structure in which at least two battery cells are stacked and placed in layers, provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 , Figure 1It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, and the electronic device includes: a battery 1, a temperature detection unit 2, a power management unit 3, a battery control unit 4 and a main control unit 5. The battery 1 includes at least two battery cells 11 (two schematic illustrations in the figure), and the at least two battery cells 11 include at least two of low-temperature battery cells, normal temperature battery cells and high temperature battery cells. The low-temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is less than or equal to the first temperature threshold, the normal temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is greater than or equal to the first temperature threshold and less than the second temperature threshold, and the high temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is greater than or equal to the second temperature threshold; the temperature detection unit 2 is used to detect the ambient temperature of at least two battery cells 11; the signal input end of the power management unit 3 is connected to the temperature detection unit 2, the signal output end of the power management unit 3 is connected to the signal input end of the main control unit 5, and the power management unit 3 is connected to the signal input end of the main control unit 5. The negative pole of the management unit 3 is connected to the negative pole of the battery cell 11, and the power management unit 3 is used to transmit the ambient temperature of at least two battery cells 11 to the main control unit 5; the battery control unit 4 includes at least two control switches 41, and the at least two control switches 41 correspond to the at least two battery cells 11 one by one, and the control switches 41 are connected in series between the power management unit 3 and the corresponding battery cells 11; the main control unit 5 includes at least two signal output terminals, and the at least two signal output terminals of the main control unit 5 correspond to the at least two control switches 41 one by one, and the signal output terminal of the main control unit 5 is connected to the corresponding control switch 41, and the main control unit 5 is used to control the opening or closing of the corresponding control switch 41 according to the ambient temperature of the battery cell 11, so as to disconnect or conduct the path between the battery cell 11 and the power management unit 3.

[0038] In the case where the at least two cells include a low-temperature cell and the ambient temperature of the at least two cells is less than or equal to the first temperature threshold, the main control unit can control the control switch corresponding to the low-temperature cell to close, so as to conduct the path between the low-temperature cell and the power management unit, so that the low-temperature cell can power the electronic device; in the case where the at least two cells include a normal temperature cell and the ambient temperature of the at least two cells is greater than the first temperature threshold and less than the second temperature threshold, the main control unit can control the control switch corresponding to the normal temperature cell to close, so as to conduct the path between the normal temperature cell and the power management unit, so that the normal temperature cell can power the electronic device; in the case where the at least two cells include a high-temperature cell and the ambient temperature of the at least two cells is greater than or equal to the second temperature threshold, the main control unit can control the control switch corresponding to the high-temperature cell to close, so as to conduct the path between the high-temperature cell and the power management unit, so that the high-temperature cell can power the electronic device. That is, based on the working characteristics of the at least two cells and their ambient temperature, the cell that powers the electronic device can be switched to meet the power demand of the electronic device in different application scenarios.

[0039] In some embodiments, the magnitude of the first temperature threshold and the second temperature threshold can be determined based on the working characteristics of at least two cells 11 included in the battery 1. For example, if the battery includes a low-temperature cell and a normal temperature cell, the working characteristics of the low-temperature cell are: when the ambient temperature of the low-temperature cell is less than or equal to 0°C, the discharge capacity of the low-temperature cell is larger, that is, compared with the normal temperature cell, the low-temperature cell can provide more power for the electronic device; the working characteristics of the normal temperature cell are: when the ambient temperature of the normal temperature cell is greater than 0°C and less than 40°C, the discharge capacity of the normal temperature cell is larger, that is, compared with the low-temperature cell, the normal temperature cell can provide more power for the electronic device. Based on the working characteristics of the low-temperature cell and the normal temperature cell, it can be determined that the magnitude of the first temperature threshold is 0 and the magnitude of the second temperature threshold is 40.

[0040] It should be noted that the size of the first temperature threshold and the size of the second temperature threshold are only examples. In practical applications, the size of the first temperature threshold and the size of the second temperature threshold can be determined according to actual conditions. The temperature detection unit can be an NTC (Negative Temperature Coefficient) thermistor or other devices capable of detecting temperature. The embodiment of the present application does not limit the size of the first temperature threshold, the size of the second temperature threshold, and the device type of the temperature detection unit.

[0041] In some embodiments, if the battery currently powering the electronic device is exhausted, other batteries with power remaining can be directly switched to power the electronic device, thereby improving the endurance of the electronic device. For example, if the battery includes low-temperature batteries and normal-temperature batteries, and the battery currently powering the electronic device is the low-temperature battery, when the low-temperature battery is exhausted and the normal-temperature battery still has power, the normal-temperature battery is switched to power the electronic device.

[0042] For example, if the battery includes a low-temperature cell, a normal-temperature cell, and a high-temperature cell, and the cell that powers the electronic device at this time is a normal-temperature cell, when the normal-temperature cell is exhausted and both the low-temperature cell and the high-temperature cell still have power, it can be determined based on the ambient temperature of the above three cells whether the electronic device is powered by the low-temperature cell or the high-temperature cell. When the ambient temperature is less than or equal to the first temperature threshold, the low-temperature cell can be switched to power the electronic device; when the ambient temperature is greater than or equal to the second temperature threshold, the high-temperature cell can be switched to power the electronic device. When the ambient temperature is greater than the first temperature threshold and less than the second temperature threshold, the cell that powers the electronic device can be determined by comparing the difference between the ambient temperature and the first temperature threshold and the second temperature threshold. That is to say, if the difference between the ambient temperature and the first temperature threshold is smaller than the difference between the ambient temperature and the second temperature threshold, it is possible to switch to a low-temperature battery cell to power the electronic device; if the difference between the ambient temperature and the first temperature threshold is greater than the difference between the ambient temperature and the second temperature threshold, it is possible to switch to a high-temperature battery cell to power the electronic device; if the difference between the ambient temperature and the first temperature threshold is equal to the difference between the ambient temperature and the second temperature threshold, it is possible to switch to a high-temperature battery cell to power the electronic device or to switch to a low-temperature battery cell to power the electronic device.

[0043] In some embodiments, the battery further includes a battery protection board, which may correspond one-to-one to at least two cells in the battery, that is, the battery further includes at least two battery protection boards; the battery protection board may also correspond to at least two cells in the battery at the same time, that is, the battery further includes one battery protection board. Next, the above two situations will be introduced respectively.

[0044] The first case: the battery includes at least two battery protection plates, and the at least two battery protection plates correspond one-to-one to the at least two battery cells.

[0045] In some embodiments, please refer to Figure 2The battery 1 further includes at least two battery protection boards 12 (two schematic diagrams are shown in the figure), and the at least two battery protection boards 12 correspond to the at least two battery cells 11 one by one. The battery protection board 12 includes a board body 121, the board body 121 has a groove 1211, and the battery cell 11 is located in the groove 1211 of the corresponding battery protection board 12; the battery protection board 12 also includes a protection circuit 122, the protection circuit 122 has a first positive pole 1221, a second positive pole 1222, a first negative pole 1223 and a second negative pole 1224; the positive pole of the battery cell 11 is connected to the first positive pole 1221 of the protection circuit 122 of the corresponding battery protection board 12, the negative pole of the battery cell 11 is connected to the first negative pole 1223 of the protection circuit 122 of the corresponding battery protection board 12, the control switch 41 is connected in series between the positive pole of the power management unit 3 and the second positive pole 1222 of the protection circuit 122 of the corresponding battery protection board 12, and the negative pole of the power management unit 3 is connected to the second negative pole 1224 of the protection circuit 122 of the battery protection board 12.

[0046] In the above case, since the at least two battery protections correspond one-to-one to the at least two battery cells, when the service life of a battery protection board and its corresponding battery cell becomes shorter or fails, the battery protection board with short service life or the failure and its corresponding battery cell can be directly removed and replaced without affecting the use of other battery protection boards and their corresponding battery cells, which has high flexibility.

[0047] In some embodiments, please refer to Figure 2 The electronic device includes at least two temperature detection units 2 (two schematic illustrations in the figure), the at least two temperature detection units 2 correspond to at least two battery protection boards 12 one by one, and the temperature detection units 2 are integrated in the corresponding battery protection boards 12; the battery protection board 12 also includes a temperature transmission line 123, and the temperature transmission line 123 of the battery protection board 12 is respectively connected to the corresponding temperature detection unit 2 and the signal input end of the power management unit 3.

[0048] That is to say, the at least two temperature detection units correspond one-to-one to the at least two battery cells, the ambient temperature of the at least two battery cells is measured by the corresponding temperature detection units, and the at least two ambient temperatures detected by the at least two temperature detection units are transmitted to the power management unit by the corresponding temperature transmission lines.

[0049] In some embodiments, the ambient temperatures of the corresponding battery cells detected by the at least two temperature detection units may be different, but the difference is small, and they are most likely in the same temperature range, that is, the ambient temperatures of the at least two battery cells are most likely to be less than or equal to the first temperature threshold at the same time, that is, in the first temperature range, or greater than the first temperature threshold and less than the second temperature threshold at the same time, that is, in the second temperature range, or greater than or equal to the second temperature threshold at the same time, that is, in the third temperature range. If the ambient temperatures detected by the at least two temperature detection units are not in the same temperature range, the final temperature range can be determined based on the difference between the at least two ambient temperatures and the first temperature threshold, and the difference between the at least two ambient temperatures and the second temperature threshold, so as to determine the battery cell that powers the electronic device.

[0050] For example, if the electronic device includes two temperature detection units, the battery includes a low-temperature cell and a normal-temperature cell, the first temperature threshold is 0°C, and the second temperature threshold is 40°C. If the ambient temperature of the low-temperature cell detected by one of the temperature detection units is 0°C, and the ambient temperature of the normal-temperature cell detected by the other temperature detection unit is 1°C, then the ambient temperature of the low-temperature cell is equal to the first temperature threshold and is located in the first temperature range, and the ambient temperature of the normal-temperature cell is greater than the first temperature threshold and less than the second temperature threshold and is located in the second temperature range. However, since the difference between the ambient temperature of the normal-temperature cell and the first temperature threshold is small at this time, it can be determined that the final temperature range is the first temperature range, and thus it can be determined that the cell powering the electronic device is a low-temperature cell.

[0051] Since the at least two temperature detection units are located in the same electronic device, the difference between the at least two ambient temperatures detected by them will not be too large, and the at least two ambient temperatures will not be in the first temperature range and the third temperature range at the same time.

[0052] It should be noted that the above is explained by taking the at least two temperature detection units integrated in the corresponding battery protection board as an example. Of course, in actual applications, the temperature detection unit can also be set separately. In other words, the at least two temperature detection units are not integrated inside the battery protection board, and can also detect the temperature of the corresponding battery cells, and the at least two temperature detection units are respectively connected to the signal input end of the power management unit, and the detected ambient temperature can be directly sent to the power management unit without transmitting through the temperature transmission line. The embodiment of the present application does not limit the setting of the at least two temperature detection units.

[0053] In some embodiments, since the difference between the at least two ambient temperatures is small, the electronic device may further include a temperature detection unit, and the temperature detection unit may be integrated in any one of the at least two circuit protection boards to detect the ambient temperature of the battery cell corresponding to the circuit protection board, thereby determining the battery cell that powers the electronic device. Of course, in practical applications, the temperature detection unit may also be provided separately, and the embodiments of the present application do not limit this.

[0054] In some embodiments, please refer to Figure 2 The electronic device also includes at least two battery connectors 6, and the at least two battery connectors 6 correspond one to one with at least two battery protection boards 12; the battery connector 6 includes a male connector 61 and a female connector 62 for plugging and matching, one of the male connector 61 and the female connector 62 is connected to the protection circuit 122 and the temperature transmission line 123 of the corresponding battery protection board 12, and the other of the male connector 61 and the female connector 62 is connected to the positive pole, the negative pole and the signal input terminal of the power management unit 3.

[0055] The battery connector has the ability to carry high currents and can ensure the efficiency of power transmission when the battery cell powers electronic devices. At the same time, the battery connector also has good protection performance to prevent short circuits or other failures in electronic devices.

[0056] The male and female heads included in the battery connector both have plugs. The male head's plug is a pin plug, and the female head's plug is a hole plug. The number, length, and position of the pins in the pin plug correspond to the number, depth, and position of the holes in the hole plug. In this way, the male head's pin plug can be inserted into the female head's hole plug to connect the male head and the female head, thereby conducting the circuits connected to the male head and the female head.

[0057] It should be noted that in Figure 2 In the embodiment, the female head is connected to the protection circuit and temperature transmission line in the corresponding battery protection board, and the male head is connected to the positive pole, negative pole and signal input terminal of the power management unit. In actual applications, the male head can also be connected to the protection circuit and temperature transmission line in the corresponding battery protection board, and the female head is connected to the positive pole, negative pole and signal input terminal of the power management unit. The embodiment of the present application does not limit this.

[0058] In the first case above, the battery may include low-temperature cells and normal-temperature cells, high-temperature cells and normal-temperature cells, low-temperature cells and high-temperature cells, or low-temperature cells, normal-temperature cells and high-temperature cells at the same time. The battery can power electronic devices and can also be charged, that is, the battery can be discharged and charged.

[0059] Next, the discharge process and the charge process of the battery will be introduced respectively.

[0060] Discharge process: When the electronic device is turned on, if the battery includes a normal temperature cell, the default is that the normal temperature cell powers the electronic device; if the battery does not include a normal temperature cell, the main control unit can select a cell with more power to power the electronic device. Then, the at least two temperature detection units detect the ambient temperature of the at least two cells in real time and send it to the power management unit, and then the power management unit sends the ambient temperature of the at least two cells to the main control unit, and the main control unit determines the temperature range, so as to determine the cell that powers the electronic device according to the temperature range. If the temperature range determined by the main control unit at this time is different from the temperature range determined last time, it is necessary to switch to the corresponding cell to power the electronic device. For example, if the low temperature cell is powering the electronic device at this time, it means that the temperature range determined by the main control unit last time is the first temperature range, but the temperature range determined by the main control unit at this time is the second temperature range, then the path of the low temperature cell needs to be disconnected by controlling the corresponding control switch, and the path of the normal temperature cell is turned on, so as to switch to the normal temperature cell to power the electronic device.

[0061] If the temperature interval determined by the main control unit is the first temperature interval, but the battery does not include a low-temperature cell, a normal temperature cell is selected to power the electronic device; if the temperature interval determined by the main control unit is the third temperature interval, but the battery does not include a high-temperature cell, a normal temperature cell is also selected to power the electronic device. If the temperature interval determined by the main control unit is the second temperature interval, but the battery does not include a normal temperature cell, the cell that powers the electronic device is determined based on the difference between the ambient temperature of the at least two cells and the first temperature threshold, and the difference between the ambient temperature of the at least two cells and the second temperature threshold. That is, if the difference between the at least two ambient temperatures and the first temperature threshold is less than the difference between the at least two ambient temperatures and the second temperature threshold, a low temperature cell is selected to power the electronic device; if the difference between the at least two ambient temperatures and the first temperature threshold is greater than the difference between the at least two ambient temperatures and the second temperature threshold, a high temperature cell is selected to power the electronic device, and if the difference is equal, one of the low temperature cell and the high temperature cell can be selected.

[0062] When the power of the battery cell currently powering the electronic device is exhausted, the specific process of how to select other batteries to power the electronic device has been described in detail above and will not be repeated here. Please refer to the above content.

[0063] Charging process: Since the at least two battery cells correspond one-to-one to the at least two temperature detection units, the main control unit will receive at least two ambient temperatures detected by the at least two temperature detection units respectively, and compare the at least two ambient temperatures with the third temperature threshold. The third temperature threshold is used to determine whether the battery cell can be charged at a certain ambient temperature. If one of the at least two ambient temperatures is greater than the third temperature threshold, and the other ambient temperature is less than or equal to the third temperature threshold, the battery cell corresponding to the ambient temperature greater than the third temperature threshold can be charged, while the battery cell corresponding to the ambient temperature less than or equal to the third temperature threshold cannot be charged. If the ambient temperature of a battery cell is less than or equal to the third temperature threshold at this time, but it is in a charging state, the charging of the battery cell will be stopped immediately, and the battery cell corresponding to the ambient temperature greater than the third temperature threshold will be switched to be charged.

[0064] If the ambient temperature of the at least two ambient temperatures is greater than the third temperature threshold, the battery cell with lower power can be charged first, because it can be inferred from the battery cell with lower power that the battery cell supplied more power to the electronic device when the electronic device was used last time, and it can also be inferred that the battery cell will most likely supply more power to the electronic device when the electronic device is used next time. Therefore, charging the battery cell with lower power first can ensure that the battery cell is fully charged when the electronic device is used next time, so as to improve the endurance of the electronic device. If the ambient temperature of the at least two ambient temperatures is less than or equal to the third temperature threshold, none of the at least two battery cells will be charged.

[0065] The second situation: the battery includes a battery protection board, and the battery protection board corresponds to at least two battery cells at the same time.

[0066] In some embodiments, please refer to Figure 3 The battery 1 also includes a battery protection board 13, which includes a board body 131, which has a groove 1311, and at least two battery cells 11 (two schematic illustrations in the figure) are both located in the groove 1311; the battery protection board 13 also includes a protection circuit 132, the protection circuit 132 has at least two first positive electrodes 1321 corresponding to the at least two battery cells 11 and at least two first negative electrodes 1322 corresponding to the at least two battery cells 11, as well as a second positive electrode 1323 and a second negative electrode 1324, the first positive electrode 1321 is connected to the positive electrode of the corresponding battery cell 11, the first negative electrode 1322 is connected to the negative electrode of the corresponding battery cell 11, the second positive electrode 1323 is connected to the positive electrode of the power management unit 3, and the second negative electrode 1324 is connected to the negative electrode of the power management unit 3; at least two control switches 41 are integrated in the protection circuit 132 of the battery protection board 13, and the control switch 41 is connected in series between the second positive electrode 1323 and the corresponding first positive electrode 1321 of the protection circuit 132.

[0067] In the above case, since the battery protection board corresponds to at least two battery cells at the same time and the at least two control switches are integrated in the protection circuit of the battery protection board, the main control unit can more accurately and quickly connect the path between the battery cells that power the electronic device and the power management unit through the at least two control switches.

[0068] In some embodiments, please refer to Figure 3 The temperature detection unit 2 is integrated in the battery protection board 13; the battery protection board 13 also includes a temperature transmission line 133, and the temperature transmission line 133 is connected to the signal input ends of the temperature detection unit 2 and the power management unit 3 respectively.

[0069] In this way, the temperature detection unit can detect the ambient temperature of the at least two battery cells at the same time, and transmit the temperature signal to the power management unit via the temperature transmission line.

[0070] It should be noted that the above description is based on the example of integrating the temperature detection unit into the battery protection board. In actual applications, the temperature detection unit can also be set separately and directly connected to the signal input terminal of the power management unit. The embodiment of the present application does not limit this.

[0071] In some embodiments, please refer to Figure 3 The electronic device also includes a battery connector 7, which includes a male connector 71 and a female connector 72 that are plug-in compatible; one of the male connector 71 and the female connector 72 is connected to the protection circuit 132 and the temperature transmission line 133, and the other of the male connector 71 and the female connector 72 is connected to the positive pole, negative pole and signal input terminal of the power management unit 3, and the two signal output terminals of the main control unit 5.

[0072] The structure of the male and female heads in the battery connector in the second case is similar to that of the male and female heads in the battery connector in the first case, and will not be repeated here. Please refer to the above content.

[0073] In some embodiments, please refer to Figure 4 , at least two battery cells 11 are stacked; at least two battery cells 11 include a low-temperature battery cell 111, the low-temperature battery cell 111 is located on a side away from the outer casing of the electronic device, and other battery cells 112 except the low-temperature battery cell 111 of the at least two battery cells 11 are located on a side close to the outer casing of the electronic device, and an insulation layer 14 is provided between the low-temperature battery cell 111 and other battery cells 112.

[0074] When the electronic device is small in size, the at least two battery cells are stacked to reduce space occupation. Moreover, when the other battery cells except the low-temperature battery cell among the at least two battery cells are powered by the electronic device, heat will be generated. Therefore, the other battery cells except the low-temperature battery cell are arranged on one side close to the shell of the electronic device to accelerate heat dissipation. At the same time, since the low-temperature battery cell is very sensitive to heat, an insulating layer can be added between the low-temperature battery cell and the other battery cells to prevent the heat generated by the other battery cells from affecting the low-temperature battery cell when working.

[0075] In some embodiments, please refer to Figure 5 The low temperature battery 111 has a heat dissipation layer 15 around it. The low temperature battery will also generate a certain amount of heat when working, so a heat dissipation layer can be added around it to dissipate the heat generated by the low temperature battery as soon as possible to avoid the heat affecting the service life of the low temperature battery.

[0076] In some embodiments, please refer to Figure 5 , the heat dissipation layer 15 is U-shaped. Of course, in practical applications, the heat dissipation layer can also be Figure 6 The shape shown or other shapes are not limited in the embodiments of the present application.

[0077] Similar to the first case mentioned above, in the second case, the battery can include low-temperature cells and normal-temperature cells, high-temperature cells and normal-temperature cells, low-temperature cells and high-temperature cells, low-temperature cells, normal-temperature cells and high-temperature cells. The battery can power electronic devices and can also be charged, that is, the battery can be discharged and charged.

[0078] Next, the discharge process and the charge process of the battery will be introduced respectively.

[0079] Discharge process: The discharge process of the battery in the second case is similar to that in the first case. You may refer to the discharge process of the battery in the first case, which will not be described in detail here.

[0080] Charging process: Since the at least two battery cells correspond to a temperature detection unit, the main control unit will receive an ambient temperature. If the ambient temperature is less than or equal to the third temperature threshold, any battery cell in the at least two battery cells will not be charged, and the battery cell in the charging state will also stop charging immediately; if the ambient temperature is greater than the third temperature threshold, the battery cell with lower power can be charged first.

[0081] In some embodiments, for the above two situations, in order to improve the accuracy of determining the temperature interval, the electronic device is also configured with a timer, which is used to time the duration of a certain temperature interval determined by the main control unit based on the ambient temperature of the at least two batteries, obtain the temperature interval duration, and compare the temperature interval duration with the time threshold, so that the main control unit determines whether the ambient temperature of the at least two batteries is indeed in the temperature interval at this time. That is to say, after the main control unit determines the temperature interval, the timer can time the duration of the temperature interval, obtain the temperature interval duration, and compare the temperature interval duration with the time threshold. If the temperature interval duration is greater than or equal to the time threshold, it means that the ambient temperature of the at least two batteries is indeed in the temperature interval at this time, and the battery corresponding to the temperature interval can be switched to power the electronic device; if the temperature interval duration is less than the time threshold, it means that there are interference factors outside the electronic device that affect the temperature detection unit to detect the ambient temperature of the at least two batteries, and there is no need to switch to the battery corresponding to the temperature interval to power the electronic device, and continue to use the current battery to power the electronic device.

[0082] For example, the battery includes low-temperature cells and normal-temperature cells, and the time threshold is 5 minutes. If the cell currently powering the electronic device is a normal-temperature cell, that is, the temperature interval previously determined by the main control unit is the second temperature interval, and the temperature interval determined by the main control unit at this time is the first temperature interval, the timer counts the duration of the first temperature interval. If the obtained temperature interval duration is 6 minutes, the main control unit can disconnect the path between the normal-temperature cell and the power management unit, and connect the path between the low-temperature cell and the power management unit, so that the low-temperature cell can power the electronic device. If the duration is 1 minute, the main control unit continues to connect the path between the normal-temperature cell and the power management unit, disconnects the path between the low-temperature cell and the power management unit, so that the normal-temperature cell continues to power the electronic device.

[0083] In some embodiments, for the above two situations, in order to determine whether the battery is compatible with the electronic device, the electronic device also includes an identification unit. The identification unit is used to identify the battery to determine whether the battery is compatible with the electronic device. If the identification fails, it means that the battery is not compatible with the electronic device. If the identification is successful, it means that the battery is compatible with the electronic device. After the identification is successful, the identification unit is also used to identify the type of the at least two cells in the battery, so that the main control unit controls the opening or closing of the control switches corresponding to the at least two cells in the subsequent process to disconnect or conduct the path between the at least two cells and the power management unit.

[0084] In some embodiments, for the above two situations, when the ambient temperature is in the first temperature range, if the high-temperature battery cells and / or the normal-temperature battery cells are in a fully charged state at this time, the high-temperature battery cells and / or the normal-temperature battery cells can be properly discharged by active discharge to reduce their aging rate; when the ambient temperature is in the second temperature range, if the low-temperature battery cells and / or the high-temperature battery cells are in a fully charged state at this time, the low-temperature battery cells and / or the high-temperature battery cells can be properly discharged by active discharge to reduce their aging rate; similarly, when the ambient temperature is in the third temperature range, if the low-temperature battery cells and / or the normal-temperature battery cells are in a fully charged state at this time, the low-temperature battery cells and / or the normal-temperature battery cells can be properly discharged by active discharge to reduce their aging rate.

[0085] In an embodiment of the present application, the battery includes at least two cells selected from the group consisting of a low-temperature cell, a normal-temperature cell, and a high-temperature cell, and the temperature detection unit detects the ambient temperature of the at least two cells, and switches to the cell that powers the electronic device based on the temperature characteristics and ambient temperature of the at least two cells, which can meet the power demand of the electronic device in different application scenarios and improve the endurance of the electronic device. Moreover, when the battery protection plate corresponds to the at least two cells at the same time, the at least two cells are stacked to reduce space occupation; there is an insulation layer between the low-temperature cell and the other cells, and there is also a heat dissipation layer around the low-temperature battery, which can reduce the effect of heat on the low-temperature cell and extend the life of the low-temperature cell, and the other cells except the low-temperature cell are located on the side close to the outer shell of the electronic device, which can quickly dissipate the heat generated by other cells when they are working.

[0086] It should be understood that the "at least one" mentioned herein refers to one or more, and "multiple" refers to two or more. In the description of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not limit them to be necessarily different.

[0087] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises: a battery, a temperature detection unit, a power management unit, a battery control unit and a main control unit; The battery comprises at least two battery cells, and the at least two battery cells comprise at least two of a low-temperature battery cell, a normal-temperature battery cell and a high-temperature battery cell, the low-temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is less than or equal to a first temperature threshold, the normal-temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is greater than the first temperature threshold and less than a second temperature threshold, and the high-temperature battery cell is a battery cell that does not affect the battery performance when the ambient temperature is greater than or equal to the second temperature threshold; The temperature detection unit is used to detect the ambient temperature of the at least two battery cells; The signal input end of the power management unit is connected to the temperature detection unit, the signal output end of the power management unit is connected to the signal input end of the main control unit, the negative electrode of the power management unit is connected to the negative electrode of the battery cell, and the power management unit is used to transmit the ambient temperature of the at least two battery cells to the main control unit; The battery control unit comprises at least two control switches, the at least two control switches correspond to the at least two battery cells one by one, and the control switches are connected in series between the power management unit and the corresponding battery cells; The main control unit includes at least two signal output terminals, and the at least two signal output terminals of the main control unit correspond one-to-one to the at least two control switches. The signal output terminals of the main control unit are connected to the corresponding control switches. The main control unit is used to control the opening or closing of the corresponding control switches according to the ambient temperature of the battery cell, so as to disconnect or conduct the path between the battery cell and the power management unit.

2. The electronic device according to claim 1, characterized in that The battery further comprises at least two battery protection plates, and the at least two battery protection plates correspond one to one to the at least two battery cells; The battery protection board comprises a board body, the board body has a groove, and the battery cell is located in the corresponding groove of the battery protection board; The battery protection board also includes a protection circuit, which has a first positive electrode, a second positive electrode, a first negative electrode and a second negative electrode; the positive electrode of the battery cell is connected to the first positive electrode of the protection circuit of the corresponding battery protection board, and the negative electrode of the battery cell is connected to the first negative electrode of the protection circuit of the corresponding battery protection board; the control switch is connected in series between the positive electrode of the power management unit and the second positive electrode of the protection circuit of the corresponding battery protection board, and the negative electrode of the power management unit is connected to the second negative electrode of the protection circuit of the battery protection board.

3. The electronic device according to claim 2, characterized in that: The electronic device comprises at least two temperature detection units, the at least two temperature detection units correspond to the at least two battery protection boards one by one, and the temperature detection units are integrated in the corresponding battery protection boards; The battery protection board also includes a temperature transmission line, and the temperature transmission line of the battery protection board is respectively connected to the corresponding signal input ends of the temperature detection unit and the power management unit.

4. The electronic device according to claim 3, characterized in that: The electronic device further comprises at least two battery connectors, and the at least two battery connectors correspond one to one with the at least two battery protection boards; The battery connector includes a male head and a female head that are plug-matched, one of the male head and the female head is connected to the protection circuit and the temperature transmission line of the corresponding battery protection board, and the other of the male head and the female head is connected to the positive pole, negative pole and signal input terminal of the power management unit.

5. The electronic device according to claim 1, wherein: The battery further comprises a battery protection plate, the battery protection plate comprises a plate body, the plate body has a groove, and the at least two battery cells are both located in the groove; The battery protection board also includes a protection circuit, the protection circuit having at least two first positive electrodes and at least two first negative electrodes corresponding to the at least two battery cells, and a second positive electrode and a second negative electrode, the first positive electrode is connected to the positive electrode of the corresponding battery cell, the first negative electrode is connected to the negative electrode of the corresponding battery cell, the second positive electrode is connected to the positive electrode of the power management unit, and the second negative electrode is connected to the negative electrode of the power management unit; The at least two control switches are integrated in the protection circuit of the battery protection board, and the control switches are connected in series between the second positive electrode and the corresponding first positive electrode of the protection circuit.

6. The electronic device according to claim 5, characterized in that: The temperature detection unit is integrated in the battery protection board; The battery protection board also includes a temperature transmission line, and the temperature transmission line is respectively connected to the signal input end of the temperature detection unit and the signal input end of the power management unit.

7. The electronic device according to claim 6, characterized in that: The electronic device further comprises a battery connector, wherein the battery connector comprises a male connector and a female connector for plugging and matching; One of the male connector and the female connector is connected to the protection circuit and the temperature transmission line, and the other of the male connector and the female connector is connected to the positive pole, the negative pole and the signal input terminal of the power management unit, and the two signal output terminals of the main control unit.

8. The electronic device according to any one of claims 5 to 7, characterized in that: The at least two battery cells are stacked; The at least two battery cells include the low-temperature battery cell, the low-temperature battery cell is located on a side away from the outer casing of the electronic device, and the other battery cells among the at least two battery cells except the low-temperature battery cell are located on a side close to the outer casing of the electronic device, and an insulation layer is provided between the low-temperature battery cell and the other battery cells.

9. The electronic device according to claim 8, characterized in that: A heat dissipation layer is provided around the low-temperature battery core.

10. The electronic device according to claim 9, characterized in that: The heat dissipation layer is U-shaped.

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