CN212412788U - Charging control device - Google Patents
Charging control device Download PDFInfo
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- CN212412788U CN212412788U CN202020795732.5U CN202020795732U CN212412788U CN 212412788 U CN212412788 U CN 212412788U CN 202020795732 U CN202020795732 U CN 202020795732U CN 212412788 U CN212412788 U CN 212412788U
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- battery pack
- charging control
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- charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model provides a charging device contains: the charging control device comprises a first control module and a first switch module connected with the first control module, wherein the first switch module is connected with a charging end and a battery pack, the first control module can acquire parameters of the battery pack, compare the parameters of the battery pack with preset parameters and realize charging control on the battery pack through the first switch module according to the comparison result, the charging control device further comprises a second control module and a second switch module connected with the second control module, the second switch module is connected with the first switch module in series, the second control module can acquire the parameters of the battery pack, compare the parameters of the battery pack with the preset parameters and realize charging control on the battery pack through the second switch module according to the comparison result. The utility model discloses a charging device can effectively avoid the group battery overcharge.
Description
Technical Field
The utility model relates to a charge management technical field especially relates to a charge control device.
Background
In order to avoid that the household appliance is always in a charging state after charging is completed, a battery pack in the household appliance is usually provided with a charging control device, and when the voltage of the battery pack reaches a preset voltage, the charging control device can automatically terminate charging of the battery pack.
Most of the existing charging control devices are only provided with a group of charging control modules, such as a battery management chip, and the total voltage of the battery pack can be monitored in real time and the single voltage and temperature of the battery pack can be monitored through the battery management chip. However, when the acquisition part or the control part of the battery management chip fails, the charging control device cannot monitor whether the battery pack is overcharged, and the battery pack may be overcharged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can avoid the charge control device of group battery overcharge.
In order to solve the technical problem, the utility model discloses the technical scheme who takes as follows: a charging control device comprises a first control module and a first switch module connected with the first control module, the first switch module is connected with the charging end and the battery pack, the first control module can acquire and obtain the parameters of the battery pack, compare the parameters of the battery pack with preset parameters and according to the comparison result, the charging control device realizes the charging control of the battery pack through the first switch module, and also comprises a second control module and a second switch module connected with the second control module, the second switch module is connected with the first switch module in series, the second control module can acquire and obtain the parameters of the battery pack and compare the parameters of the battery pack with the preset parameters, and according to the comparison result, the charging control of the battery pack is realized through the second switch module.
Furthermore, the first control module comprises an acquisition circuit and a first control circuit, the acquisition circuit can acquire parameters of the battery pack, and the first control circuit can compare the parameters of the battery pack with the preset parameters and generate a first group of control signals.
Further, the first control module comprises a battery management chip, and the battery management chip can acquire parameters of the battery pack, compare the parameters of the battery pack with the preset parameters, and generate a first group of control signals.
Further, the second control module comprises a single chip microcomputer, the single chip microcomputer can collect the total voltage of the battery pack, compare the total voltage of the battery pack with the preset total voltage in the preset parameters, and generate a third group of control signals.
Further, the first set of control signals comprises at least a first charging control signal and a second charging control signal; when the parameter of the battery pack is not greater than the preset parameter, the battery management chip generates the first charging control signal and realizes the access of the first switch module according to the first charging control signal; and when the parameter of the battery pack is greater than the preset parameter, the battery management chip generates the second charging control signal and realizes the disconnection of the first switch module according to the second charging control signal.
Further, the third set of control signals at least comprises a third charging control signal and a fourth charging control signal; when the total voltage of the battery pack is not greater than the preset total voltage, the single chip microcomputer generates a third charging control signal, and a passage of the second switch module is realized according to the third charging control signal; and when the total voltage of the battery pack is greater than the preset total voltage, the singlechip generates the fourth charging control signal and realizes the disconnection of the second switch module according to the fourth charging control signal.
Further, the first control module is connected with the second control module, the first control module outputs a second group of control signals related to the on-off of the first control module, and the second control module receives the second group of control signals.
Further, the first control module is connected to the second control module, the first control module can output a second control signal related to on/off of the first control module, and the second control module receives the second control signal.
Further, the parameters of the battery pack include a total voltage and a cell voltage, and the preset parameters include a preset total voltage and a preset cell voltage.
Further, the first switch module comprises a MOS tube.
Further, the charging control device further comprises a timing unit, when the parameter of the battery pack acquired by the second control module reaches a second preset value, the timing unit records first time, and when the first time reaches preset time, the second control module disconnects the second switch module.
Has the advantages that:
the charging control device of the utility model not only comprises a first control module, but also comprises a second control module, and the first control module and the second control module monitor the battery pack simultaneously; the first switch module is connected with the charging end and the battery pack, the first control module can realize charging control on the battery pack through the first switch module, and the first switch module is connected with the second switch module in series, so that the second control module can realize charging control on the battery pack through the second switch module; when the first control module or the second control module detects that the battery pack is in the over-charging state, the first control module and the second control module can stop the battery pack from being continuously charged through the corresponding switch module, and therefore the possibility that the battery pack is in the over-charging state for a long time is reduced.
Drawings
Fig. 1 is a schematic diagram of a battery pack charging circuit in accordance with an exemplary embodiment of the present invention;
fig. 2 is a circuit connection wire frame diagram of a battery pack charge control device according to an exemplary embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.
It is to be understood that in the description of the embodiments of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the embodiments of the present invention, unless otherwise explicitly stated or limited, the terms "connected" and "connected" should be interpreted broadly, for example, as a fixed connection, a movable connection, a detachable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In particular embodiments of the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise direct contact between the first and second features through another feature not in direct contact.
In particular embodiments of the present invention, the term "plurality" means two or more unless explicitly stated or limited otherwise.
Referring to fig. 1-2, the present invention provides a battery pack charging control device, which includes a battery pack 1, a first control module 2, a second control module 3, a first switch module 4, a second switch module 5, and a charging terminal 6.
The first switch module 4 is connected to the charging terminal 6 and the battery pack 1, and the first switch module 4 is connected to the first control module 2. The first control module 2 can acquire parameters of the battery pack 1, compare the reference of the battery pack 1 with preset parameters, and realize charging control of the battery pack 1 through the first switch module 4 according to a comparison result. Specifically, the first control module 2 includes a battery management chip, and the battery management chip may acquire parameters of the battery pack 1, and compare the parameters of the battery pack 1 with preset parameters to generate a first group of control signals. The first group of control signals at least comprise a first charging control signal and a second charging control signal; when the parameter of the battery pack 1 is not greater than the preset parameter, the battery management chip generates the first charging control signal and realizes the access of the first switch module 4 according to the first charging control signal; when the parameter of the battery pack 1 is greater than the preset parameter, the battery management chip generates the second charging control signal, and the first switch module 4 is turned off according to the second charging control signal. In this embodiment, the battery management chip is specifically PT6007, and in other embodiments, of course, the battery management chip may also select other types that can acquire parameters of the battery pack, which is not described herein again. The battery management chip can acquire parameters of the battery pack in real time, wherein the parameters of the battery pack comprise the total voltage of the battery pack and the voltage of a single battery, and in other embodiments, the parameters of the battery pack can also comprise the real-time temperature of the battery pack and the like; correspondingly, the preset parameters include a preset total voltage, a preset single cell voltage, a preset temperature and the like. It should be noted that, in other embodiments, the first set of control signals may also include other charging control signals, for example, when the parameter of the battery pack is greater than the preset parameter, the battery management chip may also generate the charging control signal to reduce the parameters such as the total voltage or the real-time temperature of the battery pack, so as to reduce the risk of overcharging the battery pack 1. Meanwhile, in this embodiment, the first switch module 4 is specifically a MOS transistor, and of course, in other embodiments, the first switch module may also be another type of switch. Further, in other embodiments, the first control module may also be not a battery management chip, but may be an acquisition circuit and a first control circuit, the acquisition circuit may acquire parameters of the battery pack, and the first control circuit may compare the parameters of the battery pack with preset parameters and generate the first group of control signals.
Referring to fig. 2 in detail, in the present embodiment, a specific operation principle of the charging control device is further described by taking a battery pack charging circuit as an example, but it should be noted that the illustrated battery pack charging circuit is only an optional implementation manner, and in other embodiments, the charging control device may be used in other charging circuits. When the parameter of the battery pack 1 acquired by the battery management chip is not greater than the preset parameter, the battery management chip generates a first charging control signal and realizes the access of the first switch module 4 according to the first charging control signal. Specifically, in the present embodiment, when the parameter of the battery pack 1 collected by the battery management chip is not greater than the preset parameter, the battery management chip outputs a high level to enable the transistor Q4 to be connected, so that the resistor R5 is connected to the MOS transistor Q3, and thus the MOS transistor Q3 is turned on. When the parameter of the battery pack 1 is greater than the preset parameter, the battery management chip generates the second charging control signal, and the first switch module 4 is turned off according to the second charging control signal. Specifically, in this embodiment, when the parameter of the battery pack 1 collected by the battery management chip is greater than the preset parameter, the battery management chip outputs a low level to turn off the transistor Q4, so that the resistor R5 cannot be connected to the MOS transistor Q3, and thus the MOS transistor Q3 is turned off.
Further, the charging control device further comprises a second control module 3 and a second switch module 5 connected with the second control module 3, the second control module 3 can acquire the total voltage of the battery pack 1, compare the total voltage of the battery pack 1 with a preset total voltage in preset parameters, and realize charging control of the battery pack 1 through the second switch module 5 according to a comparison result. Specifically, the second control module comprises a single chip microcomputer, the single chip microcomputer can collect the total voltage of the battery pack, compare the total voltage of the battery pack with a preset total voltage, and generate a third group of control signals. The third group of control signals at least comprises a third charging control signal and a fourth charging control signal; when the total voltage of the battery pack 1 is not greater than the preset total voltage, the single chip microcomputer generates a third charging control signal, and the access of a second switch module 5 is realized according to the third charging control signal; when the total voltage of the battery pack 1 is greater than the preset total voltage, the single chip microcomputer generates a fourth charging control signal, and the second switch module 5 is switched off according to the fourth charging control signal. In this embodiment, the specific model of the single chip microcomputer is HT45F0084, and the second switch module 5 is specifically an MOS transistor, but in other embodiments, the single chip microcomputer may select another model, and the second switch module 5 may select another type of switch. It should be noted that the second control module 3 only collects the total voltage of the battery pack 1 in one embodiment, and in other embodiments, the second control module 3 may also collect the cell voltage of the battery pack 1 or collect the temperature of the battery pack 1.
Referring to fig. 2 again, when the total voltage of the battery pack 1 is not greater than the preset total voltage, the single chip generates a third charging control signal, and the second switch module 5 is turned on according to the third charging control signal. Specifically, in this embodiment, when the total voltage of the battery pack collected by the single chip microcomputer is not greater than the preset total voltage, the single chip microcomputer outputs a high level to enable the transistor Q2 to be connected, so that the resistor R2 is connected with the MOS transistor Q1, and thus the MOS transistor Q1 is turned on. When the total voltage of the battery pack 1 is greater than the preset total voltage, the single chip microcomputer generates a fourth charging control signal, and the second switch module 5 is switched off according to the fourth charging control signal. Specifically, in this embodiment, when the total voltage of the battery pack collected by the single chip microcomputer is greater than the preset total voltage, the single chip microcomputer outputs a low level to disconnect the transistor Q2, so that the resistor R2 and the MOS transistor Q1 cannot be communicated, and thus the MOS transistor Q1 is disconnected.
Further, the first switch module 4 is connected in series with the second switch module 5, so that when either the first control module 2 or the second control module 3 detects that the battery pack 1 is in the overcharge state, both the first control module 2 and the second control module 3 can stop the battery pack 1 from being charged continuously through their corresponding switch modules. Specifically, in this embodiment, when the single chip microcomputer detects that the total voltage of the battery pack 1 is greater than a preset voltage, the single chip microcomputer can output a low level to disconnect the MOS transistor Q1, so that the charging loop is disconnected; when the battery management chip detects that the parameter of the battery pack 1 is greater than the preset parameter, the battery management chip outputs a low level to enable the MOS transistor Q3 to be disconnected, so that the charging loop is disconnected. Therefore, when any one of the single chip microcomputer or the battery management chip detects that the battery pack 1 is in the overcharged state, the open circuit of the charging loop can be realized, and the overcharge of the battery pack 1 is effectively prevented.
Further, the first control module 2 is connected to the second control module 3, the first control module 2 can output a second set of control signals related to on/off of the first control module 2, the second control module 2 can receive the second set of control signals, and the second set of control signals at least includes a fifth charging control signal. Specifically, in this embodiment, the second set of control signals is related to whether the first control module 2 is operating normally, that is: when the circuit of the battery management chip is communicated, the battery management chip generates the fifth charging control signal, and the single chip microcomputer can obtain the fifth charging control signal in real time and continue to work in the original working state; when the circuit of the battery management chip fails, the single chip microcomputer cannot continuously receive the fifth charging control signal, and at the moment, the single chip microcomputer disconnects the second switch module 5 to enable the charging loop to be disconnected, so that the risk of overcharging of the battery pack 1 is further reduced. It should be noted that, in other embodiments, the second set of control signals may also further include a sixth charging control signal, that is: the battery management chip generates a fifth charging control signal and a sixth charging control signal at the same time, when the singlechip receives the fifth charging control signal and the sixth charging control signal at the same time, the battery management chip is judged to work normally, and when the singlechip cannot receive the second group of control signals at the same time, the singlechip disconnects the second switch module 5 so as to break the charging loop.
Further, the battery pack charging control device further includes a timing unit (not shown), when the total voltage of the battery pack collected by the second control module 3 reaches a second preset value, the timing unit records a first time, and when the first time reaches a preset time, the second control module 3 turns off the second switch module 5. Specifically, in this embodiment, the timing unit is integrated with the single chip microcomputer, and of course, in other embodiments, the timing unit may also be a separate module. When the total voltage of the battery pack collected by the single chip microcomputer reaches a second preset value, the timing unit starts to record first time, and it needs to be noted that the second preset value is smaller than the preset total voltage in the preset parameters. When the first time reaches the preset time, the singlechip disconnects the second switch module 5, so that the charging of the battery pack 1 is interrupted, and therefore, the risk of overcharging the battery pack 1 is reduced. It should be noted that the second preset value is only slightly smaller than the preset total voltage, and the preset time is the time required for the total voltage of the battery pack to increase from the second preset value to the preset total voltage when the battery pack 1 is in a normal charging state.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A charging control device comprises a first control module and a first switch module connected with the first control module, the first switch module is connected with a charging end and a battery pack, the first control module can acquire and obtain parameters of the battery pack and compare the parameters of the battery pack with preset parameters, and realizes the charging control of the battery pack through the first switch module according to the comparison result, it is characterized in that the charging control device also comprises a second control module and a second switch module connected with the second control module, the second switch module is connected with the first switch module in series, the second control module can acquire and obtain the parameters of the battery pack and compare the parameters of the battery pack with the preset parameters, and according to the comparison result, the charging control of the battery pack is realized through the second switch module.
2. The charging control device of claim 1, wherein the first control module comprises an acquisition circuit and a first control circuit, the acquisition circuit acquires parameters of the battery pack, and the first control circuit compares the parameters of the battery pack with the preset parameters and generates a first set of control signals.
3. The charging control device of claim 1, wherein the first control module comprises a battery management chip, and the battery management chip is capable of acquiring parameters of the battery pack, comparing the parameters of the battery pack with the preset parameters, and generating a first set of control signals.
4. The charging control device of claim 1, wherein the second control module comprises a single chip, and the single chip is capable of collecting the total voltage of the battery pack, comparing the total voltage of the battery pack with a preset total voltage in preset parameters, and generating a third set of control signals.
5. The charging control apparatus of claim 3, wherein the first set of control signals comprises a first charging control signal and a second charging control signal; when the parameter of the battery pack is not greater than the preset parameter, the battery management chip generates the first charging control signal and realizes the access of the first switch module according to the first charging control signal; and when the parameter of the battery pack is greater than the preset parameter, the battery management chip generates the second charging control signal and realizes the disconnection of the first switch module according to the second charging control signal.
6. The charging control apparatus of claim 4, wherein the third set of control signals comprises a third charging control signal and a fourth charging control signal; when the total voltage of the battery pack is not greater than the preset total voltage, the single chip microcomputer generates a third charging control signal, and a passage of the second switch module is realized according to the third charging control signal; and when the total voltage of the battery pack is greater than the preset total voltage, the singlechip generates the fourth charging control signal and realizes the disconnection of the second switch module according to the fourth charging control signal.
7. The charging control device of claim 1, wherein the first control module is connected to the second control module, the first control module outputs a second set of control signals related to on/off of the first control module, and the second control module receives the second set of control signals.
8. The charging control device according to claim 1, wherein the parameters of the battery pack include a total voltage and a cell voltage, and the preset parameters include a preset total voltage and a preset cell voltage.
9. The charging control device of claim 1, wherein the first switch module comprises a MOS transistor.
10. The charging control device according to claim 1, further comprising a timing unit, wherein when the parameter of the battery pack acquired by the second control module reaches a second preset value, the timing unit records a first time, and when the first time reaches the preset time, the second control module disconnects the second switch module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019211186619 | 2019-07-17 | ||
| CN201921118661 | 2019-07-17 |
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| Publication Number | Publication Date |
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| CN212412788U true CN212412788U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020795732.5U Active CN212412788U (en) | 2019-07-17 | 2020-05-14 | Charging control device |
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| CN (1) | CN212412788U (en) |
| WO (1) | WO2021008036A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10199844B2 (en) * | 2012-12-28 | 2019-02-05 | Koki Holdings Co., Ltd. | Power-supplying device |
| CN103219762B (en) * | 2013-04-01 | 2017-02-08 | 海能达通信股份有限公司 | Charging control circuit |
| CN205509564U (en) * | 2016-03-04 | 2016-08-24 | 深圳市朵唯志远科技有限公司 | Directly charged device to cellphone built -in battery |
| CN106684482A (en) * | 2016-12-29 | 2017-05-17 | 深圳市沃特玛电池有限公司 | Battery overcharge protection system |
| CN107069841A (en) * | 2016-12-30 | 2017-08-18 | 宁波古得电子科技有限公司 | A kind of the two poles of the earth overcharge protection circuit and method |
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2019
- 2019-11-13 WO PCT/CN2019/118047 patent/WO2021008036A1/en active Application Filing
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