CN113098088B - Battery module, power supply system and control method - Google Patents
Battery module, power supply system and control method Download PDFInfo
- Publication number
- CN113098088B CN113098088B CN202110350883.9A CN202110350883A CN113098088B CN 113098088 B CN113098088 B CN 113098088B CN 202110350883 A CN202110350883 A CN 202110350883A CN 113098088 B CN113098088 B CN 113098088B
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- control unit
- power supply
- bms control
- battery module
- power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention is suitable for the technical field of battery communication, and provides a battery module, a power supply system and a control method. The battery module comprises a charge-discharge interface and a pulse interface; the charge-discharge interface and the pulse interface are both used for being connected with power supply equipment; the pulse interface is used for receiving pulse signals sent by the power supply equipment; the battery module further includes: a first switching unit, a second switching unit, a battery body, and a BMS control unit; the BMS control unit comprises a trigger end and a power end; the trigger end is connected with the pulse interface, and the power end is connected with the battery body through the second switch unit; the pulse signal is used for supplying power to the BMS control unit for a short time through the trigger end; the battery body is used for stably supplying power to the BMS control unit when the second switch unit is closed; the invention can prolong the service life of the battery module.
Description
Technical Field
The invention belongs to the technical field of battery communication, and particularly relates to a battery module, a power supply system and a control method.
Background
With the development of society, batteries are widely used as standby power sources, and particularly play a vital role in ensuring that equipment does not lose power.
Conventionally, the power supply device is powered by mains supply, and when an abnormality occurs in the mains supply, the power supply device is powered by a battery. When the battery supplies power to the power supply device, the BMS (Battery Management System ) is required to control the battery to supply power to the device. Currently, a BMS is usually in an operating state, and the BMS is powered by a battery, and the BMS operation consumes the power of the battery, which may affect the normal operation of the power supply device.
Disclosure of Invention
In view of the above, the present invention provides a battery module, a power supply system and a control method, so as to solve the problem that the conventional BMS is powered by a battery, and the BMS consumes the power of the battery and may affect the normal operation of the power supply device.
A first aspect of an embodiment of the present invention provides a battery module, including a charge-discharge interface and a pulse interface;
the charge-discharge interface and the pulse interface are both used for being connected with power supply equipment; the battery module supplies power to the power supply equipment through the charge-discharge interface, or the power supply equipment charges the battery module through the charge-discharge interface; the pulse interface is used for receiving pulse signals sent by the power supply equipment; the pulse signal is used for starting the battery module;
the battery module further includes: a first switching unit, a second switching unit, a battery body, and a BMS control unit;
the BMS control unit comprises a trigger end and a power end; the trigger end is connected with the pulse interface, and the power end is connected with the battery body through the second switch unit;
the pulse signal is used for supplying power to the BMS control unit for a short time through the trigger end;
the battery body is used for stably supplying power to the BMS control unit when the second switch unit is closed;
the BMS control unit is used for controlling the second switch unit to be closed when short-time power supply is obtained, and completing the power-on starting process of the battery module when stable power supply is obtained;
the first switch unit is connected between the battery body and the charge-discharge interface and is controlled by the BMS control unit; wherein, when the first switch unit is closed, the battery body supplies power to the power supply device or the power supply device charges the battery body.
A second aspect of an embodiment of the present invention provides a power supply system including a power supply apparatus and the battery module of the first aspect above.
A third aspect of an embodiment of the present invention provides a control method applied to the power supply system of the above second aspect, the control method including:
when the power supply equipment sends a pulse signal to the BMS control unit, the BMS control unit controls the second switch unit to be closed so that the battery body stably supplies power to the BMS control unit;
after the BMS control unit controls the second switch unit to be closed, if the power supply equipment sends a mains supply abnormal signal to the BMS control unit, the BMS control unit controls the first switch unit to be closed so that the battery module supplies power to the power supply equipment;
the power supply device is used for sending a pulse signal to the BMS control unit, wherein the commercial power abnormal signal is a communication signal sent to the BMS control unit when the commercial power supply abnormality is continuously detected after the pulse signal is sent by the power supply device.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a battery module, which comprises a charge-discharge interface and a pulse interface; the charge-discharge interface and the pulse interface are both used for being connected with power supply equipment; the battery module supplies power to the power supply equipment through the charge-discharge interface, or the power supply equipment charges the battery module through the charge-discharge interface; the pulse interface is used for receiving pulse signals sent by the power supply equipment; the pulse signal is used for starting the battery module; the battery module further includes: a first switching unit, a second switching unit, a battery body, and a BMS control unit; the BMS control unit comprises a trigger end and a power end; the pulse signal is used for supplying power to the BMS control unit for a short time through the trigger end; the battery body is used for stably supplying power to the BMS control unit when the second switch unit is closed; the BMS control unit is used for controlling the second switch unit to be closed when short-time power supply is obtained, and completing the power-on starting process of the battery module when stable power supply is obtained. When the battery module receives the pulse signal, the pulse signal is firstly used for supplying power for a short time, then the second switch unit is controlled to be closed, and the battery body is used for supplying power to the BMS control unit stably, so that frequent discharging of the battery body can be avoided under the condition that normal operation of the battery module is not affected, the electric quantity of the battery body is ensured, the service life of the battery module can be prolonged, and further the running stability of power supply equipment is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a battery module according to an embodiment of the present invention;
fig. 2 is a schematic view of another battery module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power supply system according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a structure of a battery module according to an embodiment of the present invention is shown.
In some embodiments of the present invention, the battery module 10 may include a charge-discharge interface and a pulse interface;
the charge-discharge interface and the pulse interface are both used for being connected with the power supply equipment 200; wherein, the battery module 10 supplies power to the power supply device 200 through the charge-discharge interface, or the power supply device 200 charges the battery module 10 through the charge-discharge interface; the pulse interface is used for receiving a pulse signal sent by the power supply device 200; the pulse signal is used to activate the battery module 10;
the battery module 10 further includes: the first switching unit 100, the second switching unit 110, the battery body 120, and the BMS control unit 130;
the BMS control unit 130 includes a trigger terminal and a power terminal; the trigger end is connected with the pulse interface, and the power end is connected with the battery body 120 through the second switch unit 110;
the pulse signal is used for supplying power to the BMS control unit 130 for a short time through the trigger terminal;
the battery body 120 is used to stably supply power to the BMS control unit 130 when the second switching unit 110 is closed;
the BMS control unit 130 is configured to control the second switching unit 110 to be closed when short-time power is supplied, and complete the power-on start process of the battery module 10 when stable power is supplied;
the first switching unit 100 connected between the battery body 120 and the charge-discharge interface, controlled by the BMS control unit 130; wherein, when the first switching unit 100 is closed, the battery body 120 supplies power to the power supply apparatus 200 or the power supply apparatus 200 charges the battery body 120.
Optionally, the first switch unit and the second switch unit are both normally open switches, so as to ensure that the battery module is in a dormant state under normal conditions and ensure the electric quantity of the battery body.
Optionally, the power supply device may be a UPS power supply device, or other power supply devices, for supplying power to the load, where in general, the power supply device is powered by mains supply, and when the mains supply is abnormal, a standby power supply, that is, a battery module, needs to supply power to the power supply device to ensure that the load works normally.
Optionally, under normal conditions, when the commercial power is normal, the power supply device works normally, so as to ensure the electric quantity of the battery module, the battery module generally enters a dormant state, the battery body does not supply power to the BMS control unit, and the BMS control unit does not work.
When the commercial power is unusual, power supply unit sends pulse signal to BMS control unit through the trigger end, and start BMS control unit that can be brief, BMS control unit starts the back, can control the second switch unit to be closed, and the battery body is to BMS control unit steady power supply this moment, and BMS control unit can control first switch unit to be closed after stabilizing to get the electricity to make the battery body pass through the charge-discharge interface and supply power to power supply unit.
The invention provides a battery module, which comprises a charge-discharge interface and a pulse interface; the charge-discharge interface and the pulse interface are both used for being connected with power supply equipment; the battery module supplies power to the power supply equipment through the charge-discharge interface, or the power supply equipment charges the battery module through the charge-discharge interface; the pulse interface is used for receiving pulse signals sent by the power supply equipment; the pulse signal is used for starting the battery module; the battery module further includes: a first switching unit, a second switching unit, a battery body, and a BMS control unit; the BMS control unit comprises a trigger end and a power end; the pulse signal is used for supplying power to the BMS control unit for a short time through the trigger end; the battery body is used for stably supplying power to the BMS control unit when the second switch unit is closed; the BMS control unit is used for controlling the second switch unit to be closed when short-time power supply is obtained, and completing the power-on starting process of the battery module when stable power supply is obtained. When the battery module receives the pulse signal, the pulse signal is firstly used for supplying power for a short time, then the second switch unit is controlled to be closed, and the battery body is used for supplying power to the BMS control unit stably, so that frequent discharging of the battery body can be avoided under the condition that normal operation of the battery module is not affected, the electric quantity of the battery body is ensured, the service life of the battery module can be prolonged, and further the running stability of power supply equipment is improved.
Referring to fig. 2, a schematic diagram of a structure of another battery module according to an embodiment of the present invention is shown.
In some embodiments of the present invention, the battery module 10 further includes a third switching unit 140;
the third switching unit 140 connected between the trigger terminal and the pulse interface and controlled by the BMS control unit 130;
wherein the third switching unit 140 is a normally closed switch;
the BMS control unit 130 is further configured to control the third switching unit 140 to be turned off to disconnect the trigger terminal from the pulse interface after the power-on starting process of the battery module 10 is completed.
Optionally, the third switch unit may play a role in protection, thereby improving the reliability and safety of the operation of the battery module.
In some embodiments of the present invention, the BMS control unit 130 may include an energy storage capacitor;
the storage capacitor is used for receiving the pulse signal through the trigger terminal and storing the electric energy of the pulse signal so as to enable the BMS control unit 130 to be electrified for a short time.
In some embodiments of the present invention, the pulse interface is specifically configured to receive a pulse signal sent by the power supply device 200 when detecting a current mains supply abnormality.
Optionally, the pulse signal is a power supply signal, and the power supply device may send the pulse signal when the mains supply is abnormal, so that the BMS control unit is started after a short time.
In some embodiments of the present invention, the battery module 10 further includes a communication interface for connecting with the power supply apparatus 200, and the power supply apparatus 200 communicates with the battery module 10 through the communication interface.
Optionally, the battery module establishes communication with the power supply device through the communication interface, so that whether the power supply device is abnormal in mains supply can be confirmed again under the condition that the BMS control unit stably works, and the working reliability of the battery module is improved.
Referring to fig. 3, a schematic structural diagram of a power supply system according to an embodiment of the present invention is shown.
The embodiment of the present invention also provides a power supply system 20, and in some embodiments of the present invention, the power supply system 20 includes a power supply apparatus 200, and further includes the battery module 10 provided in any of the embodiments above.
The embodiment of the present invention further provides a control method applied to the power supply system 20 as above, and in some embodiments of the present invention, the control method may include:
when the power supply device 200 transmits a pulse signal to the BMS control unit 130, the BMS control unit 130 controls the second switching unit 110 to be closed so that the battery body 120 stably supplies power to the BMS control unit 130;
after the BMS control unit 130 controls the second switching unit 110 to be closed, if the power supply device 200 transmits a mains abnormal signal to the BMS control unit 130, the BMS control unit 130 controls the first switching unit 140 to be closed so that the battery module 10 supplies power to the power supply device 200;
the utility power abnormality signal is a communication signal transmitted to the BMS control unit 130 when the utility power supply abnormality is continuously detected after the power supply device 200 transmits the pulse signal.
In some embodiments of the present invention, after the BMS control unit 130 controls the second switching unit 110 to be closed, it further includes:
if the power supply device 200 transmits a normal signal of the utility power to the BMS control unit 130, the BMS control unit 130 controls the second switching unit 110 to be turned off to power-off and sleep the battery module 10.
Optionally, after the BMS control unit works stably, the communication terminal communicates with the complete machine equipment to confirm whether the complete machine equipment continuously sends a mains supply abnormal signal at the moment, if the mains supply is only temporarily power-shaking or misjudgment, the BMS control unit controls the second switch unit to be disconnected, so that the battery module enters a dormant state, and once again, the mains supply judgment is performed after the BMS control unit supplies power stably, so that the working stability and reliability of the power supply system can be improved.
In some embodiments of the present invention, after the BMS control unit 130 controls the second switching unit 110 to be closed, it further includes:
the BMS control unit 130 controls the third switching unit 140 to be turned off;
after the BMS control unit 130 controls the second switching unit 110 to be turned off, it further includes:
the BMS control unit 130 controls the third switching unit 140 to be closed.
Optionally, after the second switch unit is closed, the battery body supplies power to the BMS control unit stably, and at the moment, the first switch unit can be controlled to be opened, so that current reverse irrigation is avoided.
In some embodiments of the present invention, the control method may further include:
determining whether the power supply device 200 transmits a charging signal to the BMS control unit 130 every preset time;
when the power supply device 200 transmits a charging signal to the BMS control unit 130, the BMS control unit 130 controls the second switching unit 110 to be closed, so that the BMS control unit 130 obtains stable power supply;
the BMS control unit 130 obtains the electricity amount of the battery body 120;
if the electric quantity of the battery body 120 is lower than the preset electric quantity value, the BMS control unit 130 controls the first switching unit to be turned on so that the utility power charges the battery body 120 through the power supply device 200;
if the battery body 120 has an electric quantity not lower than a preset electric quantity value, the BMS control unit 130 controls the second switching unit to be turned off.
Optionally, the battery body may be powered by the BMS control unit, the power supply device may include a voltage conversion circuit, and the power supply device may receive power supplied by the battery module, or may charge the battery module through the charge/discharge interface.
Optionally, the power supply device sends a charging signal to the BMS control unit through the third switching unit every preset time, so that the BMS control unit is briefly started. The BMS control unit controls the second switch unit to be closed, the BMS control unit detects the electric quantity of the battery body, when the electric quantity of the battery body is detected to be lower than a preset electric quantity value, the electric quantity of the battery body is indicated to be lost, the battery body needs to be charged, the first switch unit is controlled to be closed, the BMS control unit sends an electric quantity alarm signal to the power supply equipment through the communication end, and the commercial power charges the battery module through the power supply equipment; when the electric quantity of the battery body is detected to be not lower than a preset electric quantity value, the electric quantity of the battery body is sufficient, charging is not needed, the BMS control unit controls the second switch unit to be disconnected, and the battery module enters a dormant state.
Optionally, under general circumstances, the charging signal is that power supply unit detects when the commercial power is normal, and the short-time power supply signal that sends to BMS control unit through the trigger end, BMS control unit can communicate with power supply unit after the start-up, confirms that power supply unit sent is the charging signal after, detects battery body's electric quantity, confirms whether to charge according to the electric quantity. The pulse signal has a higher priority than the charging signal, i.e. the charging signal is not transmitted when the pulse signal is transmitted.
Optionally, in a normal case, when the mains supply is powered off or the voltage value is too low enough to enable the power supply device to normally supply power to the load, the battery module serving as a standby power supply needs to be started to supply power to the power supply device, so that the power supply device does not power down to work, and a bus capacitor is arranged in the power supply device, so that the power supply of the load can be maintained within a certain period of time in a short period of time when the mains supply is abnormal, and in order to ensure that the load is continuously powered on, the power-down maintenance time of the bus capacitor in the whole device is generally longer than the time from the detection of the abnormal mains supply to the closing of the first switch unit.
The invention can ensure the electric quantity of the battery module, does not influence the normal power supply of the power supply equipment to the load, can prolong the service life of the battery module, and can improve the working reliability and safety of the power supply equipment.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (9)
1. The battery module is characterized by comprising a charge-discharge interface and a pulse interface;
the charge-discharge interface and the pulse interface are both used for being connected with power supply equipment; the battery module supplies power to the power supply equipment through the charging and discharging interface, or the power supply equipment charges the battery module through the charging and discharging interface; the pulse interface is used for receiving a pulse signal sent by the power supply equipment; the pulse signal is used for starting the battery module;
the battery module further includes: a first switching unit, a second switching unit, a battery body, and a BMS control unit;
the BMS control unit comprises a trigger end and a power end; the triggering end is connected with the pulse interface, and the power end is connected with the battery body through the second switch unit;
the pulse signal is used for supplying power to the BMS control unit for a short time through the trigger end;
the battery body is used for stably supplying power to the BMS control unit when the second switch unit is closed;
the BMS control unit is used for controlling the second switch unit to be closed when short-time power supply is obtained, and completing the power-on starting process of the battery module when stable power supply is obtained;
the first switch unit is connected between the battery body and the charge-discharge interface and is controlled by the BMS control unit; wherein, when the first switch unit is closed, the battery body supplies power to the power supply device or the power supply device charges the battery body;
the BMS control unit comprises an energy storage capacitor;
the energy storage capacitor is used for receiving the pulse signal through the trigger end and storing the electric energy of the pulse signal so as to enable the BMS control unit to be electrified for a short time;
the first switch unit and the second switch unit are both normally open switches.
2. The battery module of claim 1, further comprising a third switching unit;
the third switch unit is connected between the trigger end and the pulse interface and is controlled by the BMS control unit;
wherein the third switch unit is a normally closed switch;
the BMS control unit is also used for controlling the third switch unit to be disconnected after the power-on starting process of the battery module is completed, so as to disconnect the trigger end from the pulse interface.
3. The battery module of claim 1, wherein the pulse interface is specifically configured to receive a pulse signal sent by the power supply device when a current mains supply abnormality is detected.
4. A battery module according to any one of claims 1 to 3, further comprising a communication interface for connection with the power supply device, the power supply device communicating with the battery module via the communication interface.
5. A power supply system comprising a power supply device, characterized in that the power supply system further comprises a battery module as claimed in any one of claims 1 to 4.
6. A control method applied to the power supply system according to claim 5, the control method comprising:
when the power supply equipment sends a pulse signal to the BMS control unit, the BMS control unit controls the second switch unit to be closed so that the battery body stably supplies power to the BMS control unit;
after the BMS control unit controls the second switch unit to be closed, if the power supply equipment sends a mains supply abnormal signal to the BMS control unit, the BMS control unit controls the first switch unit to be closed so that the battery module supplies power to the power supply equipment;
the utility power abnormal signal is a communication signal sent to the BMS control unit when the power supply equipment continuously detects the power supply abnormality after sending the pulse signal.
7. The control method of claim 6, further comprising, after the BMS control unit controls the second switching unit to be closed:
and if the power supply equipment sends a commercial power normal signal to the BMS control unit, the BMS control unit controls the second switch unit to be disconnected so as to enable the battery module to lose electricity and sleep.
8. The control method of claim 7, further comprising, after the BMS control unit controls the second switching unit to be closed:
the BMS control unit controls the third switch unit to be turned off;
after the BMS control unit controls the second switching unit to be turned off, it further includes:
the BMS control unit controls the third switching unit to be closed.
9. The control method according to any one of claims 7 to 8, characterized by further comprising:
determining whether the power supply device transmits a charging signal to the BMS control unit every preset time;
when the power supply device sends a charging signal to the BMS control unit, the BMS control unit controls the second switch unit to be closed so that the BMS control unit obtains stable power supply;
the BMS control unit obtains the electric quantity of the battery body;
if the electric quantity of the battery body is lower than a preset electric quantity value, the BMS control unit controls the first switch unit to be closed so that the mains supply charges the battery body through the power supply equipment;
and if the electric quantity of the battery body is not lower than a preset electric quantity value, the BMS control unit controls the second switch unit to be disconnected.
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| CN202110350883.9A CN113098088B (en) | 2021-03-31 | 2021-03-31 | Battery module, power supply system and control method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955552A (en) * | 2011-08-09 | 2013-03-06 | 凹凸电子（武汉）有限公司 | Controller, battery management systems and method for controlling battery management systems |
| CN110574217A (en) * | 2017-11-07 | 2019-12-13 | 株式会社Lg化学 | BMS awakens equipment, and including BMS and group battery of this BMS awakens equipment up |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2574948B1 (en) * | 2011-09-09 | 2017-08-30 | GS Yuasa International Ltd. | Electric storage device monitor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955552A (en) * | 2011-08-09 | 2013-03-06 | 凹凸电子（武汉）有限公司 | Controller, battery management systems and method for controlling battery management systems |
| CN110574217A (en) * | 2017-11-07 | 2019-12-13 | 株式会社Lg化学 | BMS awakens equipment, and including BMS and group battery of this BMS awakens equipment up |
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