CN106712245B - Switching power supply system, rack and control method - Google Patents

Switching power supply system, rack and control method Download PDF

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CN106712245B
CN106712245B CN201510432470.XA CN201510432470A CN106712245B CN 106712245 B CN106712245 B CN 106712245B CN 201510432470 A CN201510432470 A CN 201510432470A CN 106712245 B CN106712245 B CN 106712245B
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power distribution
power
module
group
distribution unit
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CN106712245A (en
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刘立新
巩欣
黄帮明
魏弢
夏勇
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China Mobile Group Design Institute Co Ltd
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China Mobile Group Design Institute Co Ltd
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Abstract

The invention discloses a switching power supply system, a rack and a control method applied to the communication field, comprising the following steps: the power supply comprises a power supply output module, a switch module, a power distribution module and a control module; the power distribution module includes at least N groups of power distribution units having load units, each group of power distribution units including: the load unit, the first control switch and the first storage battery pack; the control module supplies power to the load units through the control switch module and the first control switch, and it can be seen that the control module supplies power to the load units through the control switch module and the first control switch, that is, the control module can control the power supply of each group of load units through the switch module and the first control switch, so that the types of storage battery packs in different power distribution units are inconsistent, and meanwhile, as the storage battery packs in each group of power distribution units are independently controlled by the control module, a set of switching power supply can be shared by a plurality of operators.

Description

Switching power supply system, rack and control method
Technical Field
The present invention relates to the field of communications, and in particular, to a switching power supply system, a rack, and a control method.
Background
Fig. 1 is a schematic structural diagram of a switching power supply system in the prior art of communication. As shown in the figure, the power module inputs three-phase alternating current to the alternating current distribution unit through a switch K0, then supplies power to the AC/DC module through switches K1-Kn, the AC/DC module converts the alternating current and outputs the direct current to the direct current output busbar, the positive electrode of the direct current output busbar is grounded, and the negative electrode of the direct current output busbar is respectively connected with the primary power-down battery, the secondary power-down battery and the external storage battery through the current sensor and the relay.
It can be seen that the charging voltage of the external storage battery pack in the switch power supply system in the existing communication field is directly from the direct-current output busbar, so that each group of storage batteries in the external storage battery pack must be completely consistent, namely: the capacity is consistent, the floating voltage is consistent, the production time is consistent, the manufacturers are consistent, and the new and old degrees are consistent.
Under the prior art, even if only a single storage battery in the external storage battery pack is damaged, the whole external storage battery pack must be replaced at the same time according to the existing use standard of the communication industry, so that the consistency can be ensured, and therefore, great resource waste is caused. Meanwhile, with the development of novel storage batteries, the communication industry also starts to use storage batteries such as lithium iron phosphate batteries, but under the prior art, a switching power supply system cannot simultaneously meet the requirement of simultaneously using a lead-acid battery and a lithium iron phosphate battery, and the complementary advantages among different types of batteries cannot be realized.
Disclosure of Invention
The embodiment of the invention provides a switching power supply system, a rack and a control method, which are used for solving the problem that the consistency among storage battery packs in the switching power supply system in the prior art is ensured so as to cause resource waste.
The embodiment of the invention provides a switching power supply system applied to the communication field, which comprises: the power supply comprises a power supply output module, a switch module, a power distribution module and a control module;
the power output module is connected with the power distribution module through the switch module and is used for rectifying alternating current and outputting direct current to the power distribution module;
the power distribution module includes at least N groups of power distribution units having load units, each group of power distribution units including: the load unit, the first control switch and the first storage battery pack; the load unit is connected with the first storage battery pack through the first control switch, and the load unit is connected with the power output module through the switch module; the first control switch is connected with the control module; n is a positive integer;
the control module supplies power to the load unit by controlling the switch module and the first control switch.
Preferably, the switch module at least comprises N first contactors corresponding to the power distribution units one by one; the control module is used for controlling the first L first contactor and a first control switch in the power distribution unit corresponding to the first L contactor to be conducted when the power output module supplies power so as to charge a first storage battery pack in the power distribution unit corresponding to the first L contactor; l is more than or equal to 1 and N is more than or equal to 1; the control module is used for controlling the first control switch in the Mth group of power distribution units to be disconnected after the first storage battery pack in the Mth group of power distribution units is charged, wherein M is a positive integer and M is less than or equal to N; or,
When the power output module stops supplying power, the N first contactors are controlled to be disconnected, and the first control switch in the X-th group of power distribution units is controlled to be reversely conducted so that the first storage battery in the X-th group of power distribution units supplies power to the load units in the X-th group of power distribution units, wherein X is a positive integer and is less than or equal to N; or,
when the power output module stops supplying power, the Y-th first contactor and at least Z first contactors are controlled to be conducted, the first control switch in the Y-th power distribution unit is controlled to be conducted reversely, and the first control switches in the Z-th power distribution units corresponding to the at least Z first contactors are controlled to be disconnected, so that the Y-th power distribution unit and the at least Z-th power distribution unit are supplied with power by the first storage battery in the Y-th power distribution unit, Y is a positive integer and Y is less than N, and Z is a positive integer and Z is less than N.
Preferably, the power distribution module further comprises: a standby power distribution unit;
the backup power distribution unit includes: a second control switch and a second battery pack; the second control switch is connected with the control module;
the switch module further comprises a second contactor corresponding to the standby power distribution unit;
and the control module is used for controlling the second contactor corresponding to the standby power distribution unit and the first contactor corresponding to at least one group of power distribution units to be conducted when the power output module stops supplying power, and controlling the second control switch to be conducted reversely so as to supply power to the load units in the power distribution units conducted by the first contactor by the second storage battery.
Preferably, the first control switch in each group of power distribution units and the second control switch in each spare power distribution unit are two-way switching power electronic switches.
Preferably, the load units in each group of power distribution units include: a primary power down branch and a secondary power down branch;
the primary power down leg includes: a first current sensor, a third contactor and a primary power-down device; the first current sensor is used for detecting the current of the primary power-down branch, and the third contactor supplies power to the primary power-down equipment when being conducted;
the secondary power down leg includes: a second current sensor and a secondary power-down device; the switch module is connected with the first control switch through the second current sensor and is used for detecting the charge/discharge flow of the first storage battery pack;
the primary power-down branch is connected in parallel with the secondary power-down branch.
Preferably, the switch module further comprises:
at least N third current sensors which are in one-to-one correspondence with the power distribution units;
the third current sensor is used for detecting the current value of the corresponding power distribution unit;
the control module is used for determining the electric charge integral value of each group of power distribution units according to the first current sensor, the second current sensor and the third current sensor.
The control module is used for controlling the P third current sensor to detect the current value of the power distribution unit corresponding to the P third current sensor;
and determining an integral value of a power distribution unit of the P group corresponding to the third current sensor of the P group according to the current value, and charging according to the integral value of the power distribution unit of the P group.
Preferably, the method further comprises: the storage battery management module is used for managing the storage battery,
the storage battery management module is used for detecting terminal voltage information of the first storage battery pack in each group of power distribution units and sending the detected terminal voltage information of the first storage battery pack in each group of power distribution units to the control module;
and after receiving the terminal voltage information sent by the first storage battery in each group of power distribution units and sent by the storage battery management module, the control module judges whether the floating charge voltage and/or the uniform charge voltage of the first storage battery in the O-th group of power distribution units are lower than the preset floating charge voltage and/or the standard value of the uniform charge voltage, and if so, controls the first control switch in the O-th group of power distribution units to conduct positively so as to charge the first storage battery.
Preferably, the control module controls the charging pulse width of each group of power distribution units through the storage battery management module according to the capacity of the first storage battery group in each group of power distribution units.
Preferably, the power output module includes: the system comprises a power supply module, an alternating current power distribution module and a rectification module;
the power module is used for providing alternating current;
the alternating current power distribution module is connected with the power supply module and is used for distributing alternating current provided by the power supply module and supplying power to the rectification module;
the rectification module is connected with the power module through the alternating current distribution module and is used for rectifying alternating current provided by the rectification module and then outputting direct current.
Preferably, the first storage battery pack in each group of power distribution units is a lithium battery or a lead-acid battery.
Preferably, each of said groups of said power distribution modules
The distribution units are assigned for use by different operators.
The embodiment of the invention also provides a switching power supply rack applied to the communication field, which comprises:
a frame body;
the power supply output module is embedded in the lower part of the rack body;
the control module is embedded and arranged in the frame body above the power output module;
The switch module is embedded in the frame body above the control module;
the power distribution module is embedded in the rack body above the switch module; the power distribution module comprises N groups of power distribution units which are arranged in parallel; each group of power distribution units comprises a primary power-down port, a secondary power-down port and a storage battery port, wherein the secondary power-down port is fixedly arranged in the rack body above the switch module; the primary power-down port is fixedly arranged in the frame body above the secondary power-down port; the storage battery port is fixedly arranged in the frame body above the primary power-down port.
Preferably, the power output module includes: an alternating current power distribution module and a rectification module;
the alternating current power distribution module is fixedly arranged at the lower part of the rack body;
the rectification module is embedded in the rack body above the alternating current power distribution module and is connected with the alternating current power distribution module.
Preferably, the rectifying module includes: a metal bin and a rectifying unit of a movable matrix structure; the metal bin with the movable matrix structure is embedded and installed in the rack body above the alternating current power distribution module, and the rectifying unit is installed in the metal bin.
Based on the switching power supply system applied to the communication field provided by the above embodiment, the embodiment of the present invention further provides a method for controlling the switching power supply system provided by the above embodiment, where the method may include:
when the power output module supplies power, receiving terminal voltage information of a first storage battery pack in an A-th group power distribution unit; judging whether terminal voltage information of a first storage battery in the A-th group power distribution unit is lower than a preset reference value, if yes, controlling the switch module and a first control switch in the A-th group power distribution unit to be conducted so as to charge the first storage battery in the A-th group power distribution unit and supply power to a load unit in the A-th group power distribution unit; if not, a first control switch in the A-th group power distribution unit is controlled to be disconnected; a is a positive integer, and A is more than or equal to 1 and less than or equal to N; or,
when the power output module stops supplying power, the switch module is controlled to be turned off, and the first control switch in the B-group power distribution unit is controlled to be turned on reversely, so that the first storage battery in the B-group power distribution unit supplies power to the load unit in the B-group power distribution unit, B is a positive integer and B is less than or equal to N.
Preferably, the switch module at least comprises N first contactors corresponding to the power distribution units one by one;
The control of the switch module and the first control switch in the A-th group power distribution unit to be conducted so as to charge the first storage battery in the A-th group power distribution unit and supply power to the load unit in the A-th group power distribution unit comprises the following steps:
and controlling the first contactor A and a first control switch in the power distribution unit A corresponding to the first contactor A to be conducted so as to charge a first storage battery in the power distribution unit A corresponding to the first contactor A and supply power to a load unit in the power distribution unit A.
Preferably, when the power output module stops supplying power, the switch module is controlled to be turned off, including:
and when the power output module stops supplying power, controlling the N first contactors to be disconnected.
Preferably, the method further comprises:
when the power output module stops supplying power, the C first contactor and at least D first contactors are controlled to be conducted, the first control switch in the C group power distribution unit is controlled to be conducted reversely, the first control switches in the D group power distribution units corresponding to the at least D first contactors are controlled to be disconnected, so that the C group power distribution unit and the at least D group power distribution unit are supplied with power by the first storage battery in the C group power distribution unit, C is a positive integer and C is smaller than N, D is a positive integer and D is smaller than N.
Preferably, after the first control switch in the power distribution unit corresponding to the a first contactor and the a first contactor is controlled to be turned on, the power distribution unit further includes:
and controlling the pulse width of the charging to the A-th group power distribution unit according to the capacity of the first storage battery in the A-th group power distribution unit.
Preferably, when the power output module supplies power, terminal voltage information sent by a first storage battery pack in the a-th group power distribution unit is received, and whether the terminal voltage information of the first storage battery pack in the a-th group power distribution unit is lower than a preset reference value is judged, including:
and receiving terminal voltage information sent by the first storage battery in the A-th group power distribution unit, and judging whether the floating charge voltage and/or the uniform charge voltage of the first storage battery in the A-th group power distribution unit is lower than a preset reference value of the floating charge voltage and/or the uniform charge voltage.
Preferably, after the first control switch in the switch module and the a-th group power distribution unit is controlled to be turned on, the method further includes:
determining the capacity of a first storage battery pack in the A-th group power distribution unit according to the received terminal voltage information of the first storage battery pack in the A-th group power distribution unit;
and distributing the width of the charging pulse to the first storage battery group in the A-group power distribution unit according to the capacity of the first storage battery group in the A-group power distribution unit.
The switching power supply system applied to the communication field provided in the above embodiment includes: the power supply comprises a power supply output module, a switch module, a power distribution module and a control module; the power output module is connected with the power distribution module through the switch module and is used for rectifying alternating current and outputting direct current to the power distribution module; the power distribution module includes at least N groups of power distribution units having load units, each group of power distribution units including: the load unit, the first control switch and the first storage battery pack; the load unit is connected with the first storage battery pack through the first control switch, and the load unit is connected with the power output module through the switch module; the first control switch is connected with the control module; the control module supplies power to the load unit by controlling the switch module and the first control switch, so that the power output module is connected with the power distribution module through the switch module, the switch module can control the on or off of the power distribution unit in the power distribution module, then the control module supplies power to the load unit through the control switch module and the first control switch by setting the first control switch in the power distribution unit, namely, the control module supplies power to the load unit through the switch module and the first control switch, and therefore, the types of storage battery packs in the power distribution unit can be inconsistent, and resource waste is avoided. Meanwhile, as the storage battery pack in each group of power distribution units is independently controlled by the control module, a set of switching power supply can be shared by a plurality of operators.
The switch power supply rack applied to the communication field provided by the above embodiment includes:
a frame body;
the power supply output module is embedded in the lower part of the rack body;
the control module is embedded and arranged in the frame body above the power output module;
the switch module is embedded in the frame body above the control module;
the power distribution module is embedded in the rack body above the switch module; the power distribution module comprises N groups of power distribution units which are arranged in parallel; each group of power distribution units comprises a primary power-down port, a secondary power-down port and a storage battery port, wherein the secondary power-down port is fixedly arranged in the rack body above the control module; the primary power-down port is fixedly arranged in the frame body above the secondary power-down port; the storage battery port is fixedly arranged in the frame body above the primary power-down port, and it can be seen that the control module can supply power to the power distribution unit through the control switch module, namely, the control module can control the power supply of the power distribution unit through the switch module, so that the types of storage battery packs in the power distribution unit are inconsistent, and resource waste is avoided. Meanwhile, as the storage battery pack in each group of power distribution units is independently controlled by the control module, a set of switching power supply can be shared by a plurality of operators.
The method for controlling the switching power supply system provided in the above embodiment includes: when the power output module supplies power, receiving terminal voltage information of a first storage battery pack in an A-th group power distribution unit; judging whether terminal voltage information of a first storage battery in the A-th group power distribution unit is lower than a preset reference value, if yes, controlling the switch module and a first control switch in the A-th group power distribution unit to be conducted so as to charge the first storage battery in the A-th group power distribution unit and supply power to a load unit in the A-th group power distribution unit; if not, a first control switch in the A-th group power distribution unit is controlled to be disconnected; a is a positive integer, and A is more than or equal to 1 and less than or equal to N; or when the power output module stops supplying power, the switch module is controlled to be disconnected, and the first control switch in the B-th group power distribution unit is controlled to be reversely conducted so that the first storage battery in the B-th group power distribution unit supplies power to the load unit in the B-th group power distribution unit, B is a positive integer and B is less than or equal to N, and as can be seen, the first storage battery in the power distribution unit and the load unit can be supplied with power through the first control switch in the switch module and the power distribution unit, namely, the power supply to the load unit can be controlled through the first control switch in the switch module and the power distribution unit, so that the types of the storage battery in the power distribution unit are inconsistent, and resource waste is avoided. Meanwhile, the storage battery groups in each group of power distribution units can be independently controlled, so that a set of switching power supplies can be shared by a plurality of operators.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art switching power supply system;
fig. 2 is a schematic structural diagram of a switching power supply system according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a switching power supply system according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power distribution unit in a switching power supply system according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a power distribution unit in the switching power supply system according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a switching power supply system according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a front view of a switch power frame according to an embodiment of the present invention;
fig. 8 is another schematic structural diagram of a front view of a rack of a switching power supply according to an embodiment of the present invention;
FIG. 9 is a flowchart of a control method according to an embodiment of the present invention;
FIG. 10 is another flowchart of a control method according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a charging pulse width according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of another charging pulse width according to an embodiment of the present invention;
fig. 13 is a schematic diagram of another charging pulse width according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Fig. 2 is a schematic structural diagram of a switching power supply system according to an embodiment of the invention. As shown, the system may include:
a power output module 21, a switch module 22, a power distribution module 23, and a control module 24.
The power output module 21 is connected with the power distribution module 23 through the switch module 22, and is used for rectifying the alternating current and outputting direct current to the power distribution module 23.
The power output module 21 includes at least N groups of power distribution units 25 with load units, where N is a positive integer. Each group of power distribution units includes: a load unit 26, a first control switch 27 and a first battery pack 28. The load unit 26 is connected to the first battery pack 28 via a first control switch 27, and the load unit 26 is also connected to the power output module 21 via the switch module 22. The first control switch 27 is also connected to the control module 24.
The power output module 21 and the power distribution module 23 are also connected to the control module 24, respectively. The control module 24 may power the load unit 26 through the control switch module 22 and the first control switch 27.
Specifically, the power output module 21 may include: a power module (not shown), an ac distribution module (not shown), and a rectifying module (not shown). Wherein the power module is used for providing alternating current; the alternating current power distribution module is connected with the power supply module and can be used for distributing alternating current provided by the power supply module and then supplying power to the rectification module; for example, the alternating current power distribution module can divide three-phase alternating current input by the power supply module into three single phases through a three-phase air switch and three single-phase air switches and then output the three single phases to the rectification module; the rectification module is connected with the power module through the alternating current distribution module and is used for rectifying alternating current provided by the rectification module and then outputting direct current.
Optionally, the switch module 22 may include at least N first contactors (not shown) corresponding to the power distribution units 25 one by one, and the control module 24 may be configured to control the L first contactors and the first control switches in the power distribution units corresponding to the L first contactors to be turned on when the power output module 21 supplies power, so as to charge the first storage battery in the power distribution unit corresponding to the L first contactors; l is a positive integer, and L is more than or equal to 1 and less than or equal to N. The control module 24 may be further configured to control the first control switch in the mth power distribution unit to be turned off after the first storage battery pack in the mth power distribution unit is charged, where M is equal to or less than N.
Specifically, when the power output module 21 supplies power to the power distribution module 23 through the switch module 22, the control module 24 may control the switch module 22 and the power distribution unit 25 in the power distribution module 23 to be kept normally on, and the control module 24 controls the first control switch 27 in the power distribution unit 25 to be turned on in a forward direction according to a preset first time to charge the first storage battery pack 28 in the power distribution unit 25. After the first battery pack 28 in the power distribution unit 25 is charged, the control module 24 may control the first control switch 27 in the power distribution unit 25 to be turned off to stop charging the first battery pack 28 in the power distribution unit 25.
Optionally, the switch module 22 may include at least N first contactors in a one-to-one correspondence with the power distribution units 25, and the control module 24 may be further configured to control the N contactors to be opened and control the first control switch in the X-th power distribution unit to be turned on reversely when the power output module 21 stops supplying power, so that the first storage battery in the X-th power distribution unit supplies power to the load units in the X-th power distribution unit, where X is a positive integer and X is less than or equal to N. Or,
optionally, at least N first contactors corresponding to the power distribution units 25 one by one may be included in the switch module 22, and the control module 24 may be further configured to control the Y-th contactor and at least Z first contactors to be turned on and control the first control switch in the Y-th power distribution unit to be turned on reversely, and control the first control switches in the Z-group power distribution units corresponding to the at least Z first contactors to be turned off, so as to supply power to the Y-th power distribution unit and the at least Z-group power distribution unit by the first storage battery in the Y-th power distribution unit, where Y is a positive integer and Y < N, and Z is an integer and Z < N.
Specifically, when the power output module 21 stops supplying power to the power distribution module 23 via the switch module 22, the control module 24 may control the switch module 22 to be disconnected from the power distribution unit 25 in the power distribution module 23, and the control module 24 controls the first control switch 27 in the power distribution unit 25 to be turned on reversely, so that the first storage battery pack 28 in the power distribution unit 25 supplies power to the load unit 26.
The switching power supply system provided in the first embodiment may further include: a battery management module (not shown). The battery management module may be connected to the control module 24, and the control module 24 may control the forward conduction or reverse conduction or disconnection of the first control switch 27 through the battery management module. The control module 24 may also set a reference value for the float voltage and/or the average charge voltage of the first battery pack 28 in the power distribution unit 25.
The battery management module may detect the terminal voltage information of the first battery pack 28 in the power distribution unit 25 in real time or at a certain period, and may transmit the detected terminal voltage information of the first battery pack 28 in the power distribution unit 25 to the control module 24. After the control module 24 receives the terminal voltage information of the first storage battery 28 in the power distribution unit 25 sent by the storage battery management module, it is determined whether the float voltage and/or the average charging voltage of the first storage battery 28 in the power distribution unit 25 is lower than the preset float voltage and/or the average charging voltage reference value, if yes, the first control switch 27 in the power distribution unit 25 can be controlled to be forward conducted by the storage battery management module so as to charge the first storage battery 28 in the power distribution unit 25. When the battery management module charges the first battery pack 28 in the power distribution unit 25, a charging pulse width output to the power distribution unit 25 may be determined according to the capacity of the first battery pack 28 to charge the first battery pack 28. The pulse width of the charging pulse can be distributed by the storage battery management module according to the capacity proportion of the storage battery pack. After the first storage battery pack 28 in the power distribution unit 25 is charged for a period of time, if the float voltage and/or the average charging voltage of the first storage battery pack 28 in the power distribution unit 25 reach the preset float voltage and/or the average charging voltage reference value, the control module 24 may control the first control switch 27 in the power distribution unit 25 to be turned off through the storage battery management module to stop charging the first storage battery pack 28 in the power distribution unit 25.
Specifically, after the storage battery management module analyzes differences of types, capacities, floating charge voltages and the like of storage battery packs in each group of power distribution units, charging currents corresponding to the storage batteries of each group can be output according to the capacity proportion of the storage battery packs, and when the types of the storage battery packs in each group of power distribution units are different, the storage battery management module can also output different floating charge voltages and/or uniform charge voltages according to the types of the storage battery packs in the power distribution units.
It should be noted that, in the first embodiment, the types of the storage battery packs in the respective groups of power distribution units may be the same or different. When two sets of power distribution units are provided in the switching power supply system, the type of the storage battery of one set of power distribution units may be a lithium battery, and the type of the storage battery of the other set of power distribution units may be a lead-acid battery.
In addition, each group of power distribution units in the first embodiment may be allocated for use by different operators. When two sets of power distribution units are provided in the switching power supply system, one set of power distribution units is allocated for use by a first operator and the other set of power distribution units is allocated for use by a second operator.
It should be noted that in practical application, when a plurality of rectification modules are connected in parallel in the switching power supply system, the control module can control the direct-current voltage value and the current value output by each rectification module through the communication port connected with the rectification module so as to ensure the balance among the rectification modules.
As can be seen from the above description, in the switching power supply system for use in the communication field provided in the above embodiment, first, the power output module 21 is connected to the power distribution module 23 through the switch module 22, the switch module 22 can control on or off of the power distribution unit 25 in the power distribution module 23, then, by providing the first control switch 27 in the power distribution unit 25, the control module 24 supplies power to the load unit 26 through controlling the switch module 22 and the first control switch 27, that is, the control module 24 supplies power to the load unit 26 through controlling the switch module 22 and the first control switch 27, so that the types of the storage battery packs in the power distribution unit 25 can be inconsistent, thereby avoiding resource waste. Meanwhile, as the storage battery pack in each group of power distribution units is independently controlled by the control module 24, a set of switching power supply can be shared by a plurality of operators, and the operators can independently occupy equal rack space and output port resources.
Example two
Based on the switching power supply system provided in fig. 2, fig. 3 is a schematic structural diagram of the switching power supply system provided in the second embodiment of the present invention.
As shown in fig. 3, the power distribution module 23 may also include a backup power distribution unit 31.
The backup power distribution unit 31 may include: a second control switch 32 and a second battery pack 33. A second control switch 32 in the backup power distribution unit 31 is connected to the control module 24.
Accordingly, the switch module 22 may also include a second contactor corresponding to the backup power distribution unit 31.
The control module 24 may be configured to control the second contactor corresponding to the standby power distribution unit 31 and the first contactor corresponding to the at least one group of power distribution units 25 to be turned on when the power supply output module 21 stops supplying power, and may further control the second control switch 32 in the standby power distribution unit 31 to be turned on reversely to supply power to the load unit 26 in the power distribution unit 25 in which the first contactor is turned on by the second storage battery pack 33 in the standby power distribution unit 31.
When the power output module 21 supplies power to the power distribution module 23 through the switch module 22, the control module 24 may further control the switch module 22 to be normally turned on for both the power distribution unit 25 and the standby power distribution unit 31, and the control module 24 may control the first control switch 27 in the power distribution unit 25 and the second control switch 32 in the standby power distribution unit 31 to be turned on in turn according to a preset second time to charge the first storage battery pack 28 in the power distribution unit 25 and the second storage battery pack 33 in the standby power distribution unit 31 in turn. After the first battery pack 28 in the power distribution unit 25 and the second battery pack 33 in the backup power distribution unit 31 are charged, the control module 24 may also control the first control switch 27 in the power distribution unit 25 and the second control switch 32 in the backup power distribution unit 31 to be opened to stop charging the first battery pack 28 in the power distribution unit 25 and the second battery pack 33 in the backup power distribution unit 31.
The following describes in detail, by way of a specific example, that the control module 24 controls the first control switch 27 in the power distribution unit 25 and the second control switch 32 in the standby power distribution unit 31 to alternately conduct for a preset second time to alternately charge the first battery pack 28 in the power distribution unit 25 and the second battery pack 33 in the standby power distribution unit 31.
For example, assuming that the charging time of the first storage battery pack 28 in the power distribution unit 25 is preset in the control module 24 to be 10 minutes and the charging time of the second storage battery pack 33 in the backup power distribution unit 31 is preset to be 15 minutes, when the power output module 21 normally supplies power to the power distribution module 23 via the switch module 22, and the control module 24 controls the switch module 22 to remain normally on with each of the power distribution unit 25 and the backup power distribution unit 31, the control module 24 first controls the first control switch 27 in the power distribution unit 25 to be turned on for 10 minutes to achieve charging of the first storage battery pack 28 in the power distribution unit 25, and then controls the second control switch 32 in the backup power distribution unit 31 to be turned on for 15 minutes to achieve charging of the second storage battery pack 33 in the backup power distribution unit 31. The control module 24 controls the first control switch 27 in the power distribution unit 25 and the second control switch 32 in the standby power distribution unit 31 to be alternately turned on in the forward direction to alternately charge the first battery pack 28 in the power distribution unit 25 and the second battery pack 33 in the standby power distribution unit 31 until the charging of the first battery pack 28 in the power distribution unit 25 and the second battery pack 33 in the standby power distribution unit 31 is completed, in accordance with the above-described preset time (the charging time of the first battery pack 28 in the power distribution unit 25 is 10 minutes and the charging time of the second battery pack 33 in the standby power distribution unit 31 is 15 minutes).
Based on the first and/or second embodiments, the load unit 26 in the power distribution unit 25 in the switching power supply system provided by the present invention may include a primary power-down branch and a secondary power-down branch, see fig. 4.
Fig. 4 is a schematic structural diagram of a power distribution unit in the switching power supply system according to the embodiment of the present invention. As shown, T1-1 is a control switch in the power distribution unit 25 and B1-1 is a battery pack in the power distribution unit 25. The load unit 26 of the power distribution unit 25 may include a primary power down leg and a secondary power down leg.
The primary power-down branch mainly comprises a current sensor R1-1, a contactor J1-1 and primary power-down equipment (not shown in the figure) which are sequentially connected in series, for example, the primary power-down equipment can comprise a main equipment in a base station such as a BTS (Base Transceiver Station ) and the like; the secondary power down leg may then include the current sensor R1-2 and a secondary power down device (not shown) in series, e.g., the secondary power down device may include primarily the devices for transmission in the base station. The primary power-down branch is connected in parallel with the secondary power-down branch. The switch module 22 may be connected to the contactor J1-1 via the current sensor R1-1 to supply power to the primary power down device via the primary power down leg; meanwhile, the control switch T1-1 may be connected to the switch module 22 through the current sensor R1-2, for example, the negative electrode of the battery pack B1-1 is connected to the negative electrode of the switch module through the current sensor R1-2, and the positive electrode of the first battery pack B1-1 is connected to the positive electrode of the switch module (i.e., the other end of the switch module current output), so that the switch module 22 sequentially supplies power to the battery pack B1-1 through the current sensor R1-2 and the control switch T1-1.
In addition, a plurality of fuses (such as the fuse F1-1, the fuse F1-2 …, and the like shown in fig. 4) are connected in parallel to the branch between the switch module 22 and the current sensor R1-2, and the switch module 22 passes through each fuse to supply power to the secondary power-down equipment connected with the fuse; accordingly, a plurality of fuses (such as fuses F1-10, fuses F1-11 and …, and fuses F1-15 shown in FIG. 4) may be connected in parallel to the primary power down branch, i.e., the switch module 22 may also be configured to supply power to the primary power down equipment connected to the fuses via each of the fuses connected to the primary power down branch.
Further, the control end of the first control switch T1-1 may be further connected to the control module 24, so that the control module 24 can control the turning state and the on/off state of the first control switch T1-1 according to the supply status of the mains supply and the current stored power of the first battery B1-1, so that the switch module 22 charges the first battery B1-1 or uses the first battery B1-1 to supply power to the primary power-down device and/or the secondary power-down device.
Preferably, a fuse F1-16 is also connected in series between the current sensor R1-2 and the control switch T1-1 for preventing the current between the switch module 22 and the battery pack B1-1 from exceeding the standard.
It should be noted that the above-mentioned fuses may be set or not according to the specific requirements of each branch, as long as the corresponding branch can safely operate in the range allowing the current to pass; similarly, the current sensor and the set position thereof may be set according to specific requirements, for example, when the switch module 22 and the battery pack B1-1 need to obtain the total electric energy to supply to the primary power-down device, the secondary power-down device may be connected to the switch module 22 and the battery pack B1-1 through the current sensor R1-1 when the primary power-down device is disposed on the trunk (i.e. the primary power-down branch is connected to the switch module 22 and the battery pack B1-1 through the current sensor R1-1) respectively, and when the total electric energy of charging and discharging the battery pack B1-1 needs to be obtained, the battery pack B1-1 may be connected to the switch module 22, the primary power-down device and the secondary power-down device through the current sensor R1-2 respectively.
In order that each group of power distribution units can be compatible with multiple types of storage battery packs, the storage battery packs in the power distribution units shown in fig. 4 can be expanded based on the structure of the power distribution unit 25 shown in fig. 4, and a schematic view of the structure of the expanded power distribution unit 25 can be seen in fig. 5.
Fig. 5 is another schematic structural diagram of a power distribution unit in the switching power supply system according to the embodiment of the present invention. As shown, T1-1 and T1-2 are control switches in the power distribution unit, and B1-1 and B1-2 are battery packs in the power distribution unit. The load cells in the power distribution unit may include a primary down leg and a secondary down leg.
The primary power-down branch mainly comprises a current sensor R1-1 and a contactor J1-1 which are sequentially connected in series, and the secondary power-down branch can comprise a current sensor R1-2 and a current sensor R1-3; that is, one end of the current output of the switch module 22 is connected with the contactor J1-1 through the current sensor R1-1 to supply power to the primary power-down equipment through the primary power-down branch; meanwhile, the control switch T1-1 is connected to the switch module 22 through the current sensor R1-2, for example, the negative electrode of the battery pack B1-1 is connected to the negative electrode of the switch module 22 through the contactor R1-2, and the positive electrode of the battery pack B1-1 is connected to the positive electrode of the switch module (i.e. the other end of the current output of the switch module 22), so that the switch module 22 sequentially supplies power to the battery pack B1-1 through the current sensor R1-2 and the control switch T1-1. In addition, the control switch T1-2 may be connected to the switch module 22 through the current sensor R1-3, such that the negative electrode of the battery pack B1-2 is connected to the negative electrode of the switch module 22 through the contactor R1-3, and the positive electrode of the battery pack B1-2 is connected to the positive electrode of the switch module 22 (i.e., the other end of the current output of the switch module 22), so that the switch module 22 sequentially supplies power to the battery pack B1-2 through the current sensor R1-3 and the control switch T1-2.
Further, the control end of the control switch T1-1 may be further connected to the control module 24, so that the control module 24 can control the turning state and the on/off state of the control switch T1-1 according to the supply status of the mains supply and the current stored electricity of the battery pack B1-1, so that the switch module 22 charges the battery pack B1-1 or uses the battery pack B1-1 to supply power to the primary power-down device and/or the secondary power-down device. The control end of the control switch T1-2 may also be connected to the control module 24, so that the control module 24 can control the turning state and the on/off state of the control switch T1-2 according to the supply status of the mains supply and the current stored electricity of the battery pack B1-2, so that the switch module 22 charges the battery pack B1-2 or uses the battery pack B1-2 to supply power to the primary power-down device and/or the secondary power-down device.
Preferably, a fuse F1-16 is also connected in series between the second current sensor R1-2 and the first control switch T1-1 for preventing the current between the switch module 22 and the battery pack B1-1 from exceeding the standard. A fuse F1-17 is also connected in series between the current sensor R1-3 and the control switch T1-2 for preventing the current between the switch module 22 and the battery pack B1-2 from exceeding the standard.
It should be noted that the above-mentioned fuses may be set or not according to the specific requirements of each branch, as long as the corresponding branch can safely operate in the range allowing the current to pass; similarly, the current sensor and the set position thereof can be set according to specific requirements.
Based on the power distribution unit provided in fig. 5, when the switch module 22 of the power output module 21 supplies power to the power distribution module 23 normally, the control module 24 may control the switch module 22 to keep normally connected with the power distribution unit 25 in the power distribution module 23, and the control module 24 may alternately conduct forward by controlling the control switches T1-1 and T1-2 in the power distribution unit 25 according to a preset time to alternately charge the battery packs B1-1 and B1-2 in the power distribution unit 25. After charging of the battery packs B1-1 and B1-2 in the power distribution unit 25 is completed, the control module 24 may control the control switch T1-1 and the control switch T1-2 in the power distribution unit 25 to be turned off to stop charging the battery packs B1-1 and B1-2 in the power distribution unit 25.
Based on the power distribution unit provided in fig. 5, when the power output module 21 stops supplying power to the power distribution module 23 through the switch module 22, the control module 24 may further control the switch module 22 to be disconnected from the power distribution unit 25 in the power distribution module 23, and the control module 24 may control the control switch T1-1 in the power distribution unit 25 to be turned on reversely, while the control module 24 may control the control switch T1-2 in the power distribution unit 25 to be disconnected so as to supply power to the load unit in the power distribution unit by the battery B1-1 in the power distribution unit 25. Alternatively, when the power output module 21 stops supplying power to the power distribution module 23 via the switch module 22, the control module 24 controls the switch module 22 to be disconnected from the power distribution units 25 in the power distribution module 23, and the control module 24 may control the control switches T1-2 in the power distribution units 25 to be turned on reversely, and the control module 24 may control the control switches T1-1 in the power distribution units 25 to be disconnected to supply power to the load units in the power distribution units by the battery packs B1-2 in each group of power distribution units 25.
The switching module 22 in the switching power supply system according to the first embodiment and/or the second embodiment 2 may further include at least N current sensors corresponding to the power distribution units one to one, where the current sensors are configured to detect current values of the corresponding power distribution units.
The current values detected by the current sensors corresponding to the power distribution units in the switch module 22 are sent to the control module 24, and at the same time, the current values detected by the current sensors R1-1, R1-2 in the power distribution units are also sent to the control module 24, or the current values detected by the current sensors R1-1, R1-2, R1-3 in the power distribution units are also sent to the control module 24. The control module 15 may then determine the integral value of the respective power distribution unit based on the received current values and charge the operator using the power distribution unit a corresponding fee based on the proportional relationship of the integral values between the power distribution units.
In particular, the integral value of the corresponding power distribution unit may be determined by calculating the product of the current, the voltage, and the time in the current sensor. Then, the base station manager can charge corresponding fees, such as electricity fees, air-conditioning fees, battery pack fees, equipment maintenance fees, base station iron tower fees, base station machine room area fees, and the like, to each operator using the power distribution units according to the proportional relation of the integral values among the power distribution units and the actual resource occupancy rates of each operator.
As can be seen from the above description, in the switching power supply system applied to the communication field provided in the second embodiment, the control module 24 controls the on or off of the switching module 22, the first control switch 27 in the power distribution unit 25 and the second control switch 32 in the standby power distribution unit 31 to supply power to the load unit 26 in the power distribution unit 25, that is, the control module 24 controls the power supply of the load unit 26 through the switching module 22, the first control switch 27 in the power distribution unit 25 and the second control switch 32 in the standby power distribution unit 31, so that when the capacity of the first storage battery 28 in the power distribution unit 25 is insufficient, the second storage battery 33 in the standby power distribution unit 31 supplies power to the load unit 26 in the power distribution unit 25, so that when the power supply output module 21 stops supplying power and the capacity of the first storage battery 28 in the power distribution unit 25 is insufficient, the phenomenon that the load unit 26 in the power distribution unit 25 cannot be normal can be avoided to affect the normal use of the switching power supply system.
In addition, when a plurality of groups of power distribution units and a group of standby power distribution units are arranged in the switch power supply system and each group of power distribution units are distributed to different operators for use, the storage battery packs in the standby power distribution units can be shared by a plurality of operators through corresponding control switches in the switch modules and the power distribution units, and the storage battery packs in the standby power distribution units can be one group or multiple groups. Meanwhile, the direct current ampere hour number consumed by each power distribution unit can be measured through the use condition of the storage battery pack in the standby power distribution unit, then the direct current ampere hour number consumed by each power distribution unit is converted into the electric power consumption proportionality coefficient of the commercial power, and the electric power consumption proportionality coefficient of the commercial power of each power distribution unit can be used as a basis for charging the corresponding operators using the power distribution units. Example III
Fig. 6 is a schematic structural diagram of a switching power supply system according to a third embodiment of the present invention. As shown, may include: a power module 61, an ac power distribution module 62, a rectification module 63, a switching module 64, a power distribution module and a control module 66.
The power distribution module may include a power distribution unit 651, a power distribution unit 652, a power distribution unit 653, and a backup power distribution unit 654, and the power distribution unit 651, the power distribution unit 652, and the power distribution unit 653 are all the same in structure. The ac power distribution module 62 may include a three-phase ac switch K0 and a plurality of single-phase ac switches K1 to Kn, for distributing the three-phase ac power provided by the power module 61 and then transmitting the single-phase ac power to the rectifying module 63. The rectifying module 63 may include several AC/DC units for converting 220V single-phase AC power into 48V DC voltage. The switch module 64 may include current sensors R1-Rn and DC contactors J1-Jn.
The switch module 64 may be connected to the rectifying module 63 through a dc output busbar, where the switch module 64 is connected to the negative electrode of the dc output busbar and the positive electrode of the dc output busbar is grounded. And the current sensor R1 in the switch module 64 is used to meter the total current of the power distribution unit 651, the current sensor R2 in the switch module 64 is used to meter the total current of the power distribution unit 652, the current sensor R3 in the switch module 64 is used to meter the total current of the power distribution unit 653, and the current sensor R4 in the switch module 64 is used to meter the total current of the backup power distribution unit 654. In addition, the dc contactor J1 in the switch module 64 is used to control the connection or disconnection of the power distribution unit 651 and the dc output busbar, and the on-off of the dc contactor J1 can be controlled by the control module 66; the direct current contactor J2 in the switch module 64 is used for controlling the connection or disconnection of the power distribution unit 652 and the direct current output busbar, and the connection and disconnection of the direct current contactor J2 can be controlled by the control module 66; the direct current contactor J3 in the switch module 64 is used for controlling the connection or disconnection of the power distribution unit 653 and the direct current output busbar, and the connection and disconnection of the direct current contactor J3 can be controlled by the control module 66; the dc contactor J4 in the switch module 64 is used to control the on/off of the backup power distribution unit 654 and the dc output busbar, and the on/off of the dc contactor J4 can be controlled by the control module 66.
The power distribution unit 651 may include a primary power down leg, a secondary power down leg, a control switch T1, and a battery pack B1. The primary power-down branch may include a current sensor R1-1 and a contactor J1-1 connected in series in sequence, and the secondary power-down branch may include a current sensor R1-2 connected in series in sequence. Namely, the negative electrode of the current output of the switch module 64 is connected with the contactor J1-1 through the current sensor R1-1 so as to supply power to the primary power-down equipment through the primary power-down branch; meanwhile, the control switch T1 is connected to the switch module 64 through the current sensor R1-2, for example, the negative electrode of the battery B1 is connected to the negative electrode of the switch module 64 through the contactor R1-2, and the positive electrode of the battery B1 is connected to the positive electrode of the dc output busbar, so that the switch module 64 supplies power to the battery B1 through the current sensor R1-2 and the control switch T1 in sequence.
In addition, a plurality of fuses (such as fuse F1-1, fuse F1-2 …, and fuse F1-9 shown in FIG. 6) may be connected in parallel in a branch between the switch module 64 and the current sensor R1-2, and the switch module 64 passes through each fuse to supply power to a secondary power down device connected to the fuse; accordingly, a number of fuses (e.g., fuses F1-10, fuses F1-11 …, fuses F1-15, etc. as shown in FIG. 6) may also be connected in parallel on the primary down leg, i.e., the switch module 64 may also pass through each fuse connected on the primary down leg to power the primary down device to which the fuse is connected.
Further, the control end of the control switch T1 in the power distribution unit 651 may be further connected to the control module 66, so that the control module 66 can control the turning state and the on/off state of the control switch T1 according to the conditions of the mains supply condition and the current stored power of the battery B1, so that the switch module 64 charges the battery B1 or uses the battery B1 to supply power to the primary power-down device and/or the secondary power-down device.
Preferably, fuses F1-16 are also connected in series between the current sensor R1-2 and the control switch T1 in the power distribution unit 651 for preventing current between the switch module 64 and the battery pack B1 from exceeding.
The power distribution unit 652 may include a primary power down leg, a secondary power down leg, a control switch T2, and a battery B2. The primary power-down branch may include a current sensor R2-1 and a contactor J2-1 connected in series in sequence, and the secondary power-down branch may include a current sensor R2-2 connected in series in sequence. Namely, the negative electrode of the current output of the switch module 64 is connected with the contactor J2-1 through the current sensor R2-1 so as to supply power to the primary power-down equipment through the primary power-down branch; meanwhile, the control switch T2 is connected to the switch module 64 through the current sensor R2-2, for example, the negative electrode of the battery B2 is connected to the negative electrode of the switch module 64 through the contactor R2-2, and the positive electrode of the battery B2 is connected to the positive electrode of the dc output busbar, so that the switch module 64 supplies power to the battery B2 through the current sensor R2-2 and the control switch T2 in sequence.
In addition, a plurality of fuses (such as fuse F2-1, fuse F2-2 …, and fuse F2-9 shown in fig. 6) may be connected in parallel to a branch between the switch module 64 and the current sensor R2-2, and the switch module 64 passes through each fuse to supply power to a secondary power-down device connected to the fuse; accordingly, a number of fuses (e.g., fuses F2-10, fuses F2-11 …, fuses F2-15, etc. as shown in FIG. 6) may also be connected in parallel on the primary down leg, i.e., the switch module 64 may also pass through each fuse connected on the primary down leg to power the primary down device to which the fuse is connected.
Further, the control end of the control switch T2 in the power distribution unit 652 may be further connected to the control module 66, so that the control module 66 can control the turning state and the on/off state of the control switch T2 according to the conditions of the mains supply condition and the current stored power of the battery B2, so that the switch module 64 charges the battery B2 or uses the battery B2 to supply power to the primary power-down device and/or the secondary power-down device.
Preferably, a fuse F2-16 is also connected in series between the current sensor R2-2 and the control switch T2 in the power distribution unit 652 for preventing current between the switch module 64 and the battery pack B2 from exceeding.
The power distribution unit 653 may include a primary power down leg, a secondary power down leg, a control switch T3, and a battery B3. The primary power-down branch may include a current sensor R3-1 and a contactor J3-1 connected in series in sequence, and the secondary power-down branch may include a current sensor R3-2 connected in series in sequence. Namely, the negative electrode of the current output of the switch module 64 is connected with the contactor J3-1 through the current sensor R3-1 so as to supply power to the primary power-down equipment through the primary power-down branch; meanwhile, the control switch T3 is connected to the switch module 64 through the current sensor R3-2, for example, the negative electrode of the battery B3 is connected to the negative electrode of the switch module 64 through the contactor R3-2, and the positive electrode of the battery B3 is connected to the positive electrode of the dc output busbar, so that the switch module 64 supplies power to the battery B3 through the current sensor R3-2 and the control switch T3 in sequence.
In addition, a plurality of fuses (such as fuse F3-1, fuse F3-2 …, and fuse F3-9 shown in FIG. 6) may be connected in parallel in a branch between the switch module 64 and the current sensor R3-2, and the switch module 64 passes through each fuse to supply power to a secondary power down device connected to the fuse; accordingly, a number of fuses (e.g., fuses F3-10, fuses F3-11 …, fuses F3-15, etc. as shown in FIG. 6) may also be connected in parallel on the primary down leg, i.e., the switch module 64 may also pass through each fuse connected on the primary down leg to power the primary down device to which the fuse is connected.
Further, the control end of the control switch T3 in the power distribution unit 653 may be further connected to the control module 66, so that the control module 66 can control the turning state and the on/off state of the control switch T3 according to the condition of the mains supply condition and the current stored power of the battery B3, so that the switch module 64 charges the battery B3 or uses the battery B3 to supply power to the primary power-down device and/or the secondary power-down device.
A fuse F3-16 is also connected in series between the current sensor R3-2 and the control switch T3 in the preferred power distribution unit 653 for preventing current between the switch module 64 and the battery pack B3 from exceeding.
Backup power distribution unit 654 may include a control switch T4 and battery pack B4. The control switch T4 may be connected to a branch to which the switch module 64 is connected through the current sensor R4-1, for example, the negative electrode of the battery pack B4 is connected to the negative electrode of the switch module 64 through the contactor R4-1, and the positive electrode of the battery pack B4 is connected to the positive electrode of the dc output busbar, so that the switch module 64 supplies power to the battery pack B4 through the current sensor R4-1 and the control switch T4 in sequence.
Preferably, a fuse F4-1 is also connected in series between the current sensor R4-1 and the control switch T4 in the backup power distribution unit 654 for preventing current between the switch module 64 and the battery pack B4 from exceeding.
It should be noted that the above-mentioned fuses may be set or not according to the specific requirements of each branch, as long as the corresponding branch can safely operate in the range allowing the current to pass; similarly, the current sensor and the set position thereof can be set according to specific requirements.
Based on the switching power supply system provided in fig. 6, when the power supply module 61 supplies power to the power distribution module through the ac power distribution module 62, the rectifying module 63 and the switching module 64, the control module 66 may control the contactors J1, J2, J3 and J4 in the switching module 64 to be kept normally on, and at the same time, the control module 66 may control the control switch T1 in the power distribution unit 651, the control switch T2 in the power distribution unit 652, the control switch T3 in the power distribution unit 653 and the control switch T4 in the standby power distribution unit 654 to be turned on in turn according to a preset time to charge the battery pack B1 in the power distribution unit 651, the battery pack B3 in the power distribution unit 652, the battery pack B3 in the power distribution unit 653 and the battery pack B4 in the standby power distribution unit 654 in turn. After the battery B1 in the power distribution unit 651, the battery B2 in the power distribution unit 652, the battery B3 in the power distribution unit 653, and the battery B4 in the backup power distribution unit 654 are alternately charged, the control module may also control the control switch T1 in the power distribution unit 651, the control switch T2 in the power distribution unit 652, the control switch T3 in the power distribution unit 653, and the control switch T4 in the backup power distribution unit 654 to be turned off to stop charging the battery B1 in the power distribution unit 651, the battery B3 in the power distribution unit 652, the battery B3 in the power distribution unit 653, and the battery B4 in the backup power distribution unit 654.
When the power module 61 stops supplying power to the power distribution module via the ac power distribution module 62, the rectifying module 63, and the switching module 64, several power supply modes may be included, but are not limited to:
power supply mode one
When the power supply is stopped, the control module 66 may control the contactors J1, J2 and J3 to switch from normal closed to open, and control the contactors J1-1, J2-1 and J3-1 to remain normally closed, at which time the battery B1 supplies power to the load cells in the power distribution unit 651, the battery B2 supplies power to the load cells in the power distribution unit 652, and the battery B3 supplies power to the load cells in the power distribution unit 653.
Power supply mode two
At the moment of stopping power supply, the contactors J1-J4 are kept normally on, the switches T1-T4 are controlled to turn over (reversely conduct), the storage battery packs B1-B4 simultaneously supply power to the load units in the power distribution units 651, 652 and 653, the control module 66 starts to detect the power distribution units 651, 652 and 653, after confirming that the power supply is normal, the contactors J1-J3 are disconnected, at the moment, the storage battery pack B4 enters a standby state, and when any one of the power distribution units 651, 652 and 553 needs to boost the storage battery pack B4, the control module 66 can switch on through the corresponding contactor in the control switch module 54 to realize the boosting of the storage battery pack B4 to the power distribution units. For example, when the power distribution unit 651 needs to be powered up by the battery B4, the control module 66 may switch on by controlling the contactor J1 in the switch module 64 to realize the power distribution unit 651 powered up by the battery B4.
Power supply mode III
When the power supply is stopped, the contactors J1, J1-1, J2-1, J3-1 and J4 remain normally on, and at this time, the power distribution units 651, 652 and 653 are simultaneously supplied with power by the battery packs B1, B2, B3 and B4. The power supply mode can reduce the number of times of the cyclic discharge of the storage battery pack, thereby prolonging the service life of the storage battery pack.
As can be seen from the above description, in the switching power supply system applied to the communication field provided in the third embodiment, the control module 66 is turned on or off by the control switch module 64, the control switch T1 in the power distribution unit 651, the control switch T2 in the power distribution unit 652, the control switch T3 in the power distribution unit 653, and the control switch T4 in the standby power distribution unit 654, so as to realize power supply to the power distribution unit 651, the power distribution unit 652, and the load units in the power distribution unit 653, that is, the power supply of the control module to the load units in the power distribution unit is controlled by the switch module and the power distribution unit control switch, so that the types of the storage battery packs in each group of power distribution units can be inconsistent, thereby avoiding resource waste. Meanwhile, as the storage battery in each group of power distribution units is independently controlled by the control module, a set of switching power supply can be shared by a plurality of operators, and the operators can independently occupy equal rack space and output port resources. In addition, when multiple power distribution units coexist, multiple power supply modes can be provided, and management is convenient.
Based on the same technical conception, the embodiment of the invention also provides a switch power supply rack applied to the communication field.
Fig. 7 is a schematic structural diagram of a front view of a switch power frame according to an embodiment of the present invention. As shown, the switching power supply rack may include:
a frame body 71;
the power output module 72 is embedded in the lower part of the frame body 71;
a control module 73 embedded in the housing body 71 above the power output module 72;
the switch module 74 is embedded in the frame body 71 above the control module 73;
a power distribution module 75 embedded in the housing body 71 above the switch module 74; the power distribution module 75 may include N groups of power distribution units arranged side-by-side; each group of power distribution units comprises a primary power-down port, a secondary power-down port and a storage battery pack port, wherein the secondary power-down ports are fixedly arranged in a frame body 71 above a switch module 74; the primary power-down port is fixedly arranged on the frame body 71 above the secondary power-down port; the battery port is fixedly disposed in the housing body 71 above the primary power down port.
Preferably, the power output module 72 may include: an ac power distribution module 81 and a rectifying module 82, see fig. 8.
An ac power distribution module 81 fixedly provided at the lower portion of the rack body 71;
the rectifier module 82 is embedded in the frame body 71 above the ac power distribution module 81, and is connected to the ac power distribution module 81.
Preferably, the rectifying module 82 may include: a metal bin (not shown) of a movable matrix structure and a rectifying unit (not shown); the metal bin with the movable matrix structure is embedded and installed in the rack body above the alternating current power distribution module, the rectifying unit is installed in the metal bin, a socket and a communication interface matched with the rectifying unit can be arranged inside the metal bin, and a connection port which is directly inserted into the rack with the rectifying module can be arranged outside the metal bin. Because the metal bin of the rectifying module is of a movable matrix structure, the rectifying module and the frame body can be separated, and therefore the frame cabinet body with different specifications can be compatible with the rectifying module. In summary, the switch power supply rack applied to the communication field provided by the embodiment of the invention includes: a frame body; the power supply output module is embedded in the lower part of the rack body; the control module is embedded and arranged in the frame body above the power output module; the switch module is embedded in the frame body above the control module; the power distribution module is embedded in the rack body above the switch module; the power distribution module comprises N groups of power distribution units which are arranged in parallel; each group of power distribution units comprises a primary power-down port, a secondary power-down port and a storage battery port, wherein the secondary power-down port is fixedly arranged in the rack body above the control module; the primary power-down port is fixedly arranged in the frame body above the secondary power-down port; the storage battery port is fixedly arranged in the frame body above the primary power-down port, and it can be seen that the control module can supply power to the power distribution unit through the control switch module, namely, the control module can control the power supply of the power distribution unit through the switch module, so that the types of storage battery packs in the power distribution unit are inconsistent, and resource waste is avoided. Meanwhile, as the storage battery pack in each group of power distribution units is independently controlled by the control module, a set of switching power supply can be shared by a plurality of operators. In addition, the rectifier module can be separated from the switch power supply rack body, and the division of the rectifier module and the switch power supply rack body can be realized.
Based on the switching power supply system applied to the communication field provided by the above embodiment, the embodiment of the present invention further provides a method for controlling the switching power supply system provided by the above embodiment, and the flow of the method can be seen in fig. 9 and 10.
The flow of the method can be seen in fig. 9 when the power output module supplies power normally.
S91, when the power output module supplies power normally, the process goes to step S92.
S92, receiving terminal voltage information of a first storage battery pack in the A-th group power distribution unit, and turning to step S93.
S93, judging whether terminal voltage information of a first storage battery pack in the A-th group power distribution unit is lower than a preset reference value, if yes, turning to a step S94; if not, go to step S95.
And S94, a control switch module and a first control switch in the A-group power distribution unit are conducted so as to charge a first storage battery in the A-group power distribution unit and supply power to a load unit in the A-group power distribution unit.
S95, controlling a first control switch in the A-th group power distribution unit to be opened.
Wherein A is a positive integer and A is more than or equal to 1 and less than or equal to N.
The flow of the method can be seen in fig. 10 when the power output module stops supplying power.
S101, when the power output module stops supplying power, the process goes to step S102.
S102, the control switch module is disconnected, and the first control switch in the B-group power distribution unit is controlled to be reversely conducted so that the first storage battery in the B-group power distribution unit can supply power to the load units in the B-group power distribution unit.
Wherein B is a positive integer and B is less than or equal to N.
Preferably, the switch module at least comprises N first contactors corresponding to the power distribution units one by one;
and controlling the first contactor A and a first control switch in the power distribution unit A corresponding to the first contactor A to be conducted so as to charge a first storage battery in the power distribution unit A corresponding to the first contactor A and supply power to a load unit in the power distribution unit A.
Preferably, when the power output module stops supplying power, the N first contactors are controlled to be disconnected.
Preferably, the method further comprises:
when the power output module stops supplying power, the C first contactor and at least D first contactors are controlled to be conducted, the first control switch in the C group power distribution unit is controlled to be conducted reversely, the first control switches in the D group power distribution units corresponding to the at least D first contactors are controlled to be disconnected, so that the C group power distribution unit and the at least D group power distribution unit are supplied with power by the first storage battery in the C group power distribution unit, C is a positive integer and C is smaller than N, D is a positive integer and D is smaller than N.
Preferably, after the first control switch in the power distribution unit corresponding to the a first contactor and the a first contactor is controlled to be turned on, the power distribution unit further includes:
and controlling the pulse width of the charging to the A-th group power distribution unit according to the capacity of the first storage battery in the A-th group power distribution unit.
Preferably, terminal voltage information sent by the first storage battery in the A-th group power distribution unit is received, and whether floating charge voltage and/or uniform charge voltage of the first storage battery in the A-th group power distribution unit is lower than a preset reference value of the floating charge voltage and/or uniform charge voltage is judged.
Preferably, after the first control switch in the switch module and the a-th group power distribution unit is controlled to be turned on, the method further includes:
determining the capacity of a first storage battery pack in the A-th group power distribution unit according to the received terminal voltage information of the first storage battery pack in the A-th group power distribution unit;
and distributing the width of the charging pulse to the first storage battery group in the A-group power distribution unit according to the capacity of the first storage battery group in the A-group power distribution unit.
The following group a power distribution unit includes three battery packs as an example, and the control module controls the charging pulse width of the battery packs with reference to fig. 11, 12 and 13.
In fig. 11, 12 and 13, the "t" of the axis of abscissas indicates the charging time for each group of battery packs, that is, the width of the charging pulse, and the "v" of the axis of ordinates indicates the charging voltage of the voltage charging meter, and in fig. 11, 12 and 13, the charging voltages for the three groups of battery packs are the same, v1.
Assuming that the capacity of the first storage battery pack is 100 ampere hours (Ah), the capacity of the second storage battery pack is 200 ampere hours (Ah), and the capacity of the third storage battery pack is 300 ampere hours (Ah) in the a-th power distribution unit, in fig. 11, the control module may control the charging time (charging pulse width) output to the first storage battery pack to be t1, the charging time (charging pulse width) to the second storage battery pack to be t2, the charging time (charging pulse width) to the third storage battery pack to be t3, and may also control the proportional relationship among t1, t2, and t3, that is, t1: t2: t3=1:2:3, representing the ratio of the charge pulse widths between the first, second and third battery packs as follows: 1:2:3.
Assuming that the first battery pack is full after the time period indicated by t1 has elapsed, the control module may redistribute the charging time to the second battery pack and the third battery pack according to the terminal voltage information of the second battery pack and the terminal voltage information of the third battery pack, and redistribute the charging time to the second battery pack and the third battery pack, as shown in fig. 12.
In fig. 12, the control module assigns a charging time (charging pulse width) to the second group of storage battery to t4, assigns a charging time to the third group of storage battery to t5, and further, since the capacity of the second group of storage battery is 200 ampere hours (Ah) and the capacity of the third group of storage battery is 300 ampere hours (Ah), the control module can control the proportional relationship between t2 and t3, namely t2: t3=2:3, representing a ratio of charging pulse width between the second group battery pack and the third group battery pack of 2:3.
Assuming that the second battery pack is already full after the time period indicated by t4 has elapsed, the control module may allocate the charging time to the third battery pack again according to the terminal voltage information of the third battery pack, and allocate the charging time to the third battery pack again, as shown in fig. 13.
In fig. 13, the control module assigns a charge time (charge pulse width) to the third group battery pack of t6, and so on until the third group battery pack is fully charged.
It should be noted that, when the three battery packs are the same type of battery pack, the control module may output different average charging voltages according to the type of the battery pack.
Therefore, the control module can redistribute the charging time of the storage battery pack at intervals, so that the storage battery pack in each power distribution unit can be continuously charged, and meanwhile, the pulse width is saved, and the charging efficiency of the storage battery pack in the power distribution unit is improved.
As can be seen from the above description, the method for controlling a switching power supply system provided in the above embodiment includes: when the power output module supplies power, receiving terminal voltage information of a first storage battery pack in an A-th group power distribution unit; judging whether terminal voltage information of a first storage battery in the A-th group power distribution unit is lower than a preset reference value, if yes, controlling the switch module and a first control switch in the A-th group power distribution unit to be conducted so as to charge the first storage battery in the A-th group power distribution unit and supply power to a load unit in the A-th group power distribution unit; if not, a first control switch in the A-th group power distribution unit is controlled to be disconnected; a is a positive integer, and A is more than or equal to 1 and less than or equal to N; or when the power output module stops supplying power, the switch module is controlled to be disconnected, and the first control switch in the B-th group power distribution unit is controlled to be reversely conducted so that the first storage battery in the B-th group power distribution unit supplies power to the load unit in the B-th group power distribution unit, B is a positive integer and B is less than or equal to N, and as can be seen, the first storage battery in the power distribution unit and the load unit can be supplied with power through the first control switch in the switch module and the power distribution unit, namely, the power supply to the load unit can be controlled through the first control switch in the switch module and the power distribution unit, so that the types of the storage battery in the power distribution unit are inconsistent, and resource waste is avoided. Meanwhile, the storage battery groups in each group of power distribution units can be independently controlled, so that a set of switching power supplies can be shared by a plurality of operators.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (15)

1. A switching power supply system applied to the field of communication, comprising: the power supply comprises a power supply output module, a switch module, a power distribution module and a control module;
the power output module is connected with the power distribution module through the switch module and is used for rectifying alternating current and outputting direct current to the power distribution module;
the power distribution module includes at least N groups of power distribution units having load units, each group of power distribution units including: the load unit, the first control switch and the first storage battery pack; the load unit is connected with the first storage battery pack through the first control switch, and the load unit is connected with the power output module through the switch module; the first control switch is connected with the control module; n is a positive integer;
The control module supplies power to the load unit by controlling the switch module and the first control switch;
the switch module at least comprises N first contactors which are in one-to-one correspondence with the power distribution units;
the control module is used for controlling the first L first contactor and a first control switch in the power distribution unit corresponding to the first L contactor to be conducted when the power output module supplies power so as to charge a first storage battery pack in the power distribution unit corresponding to the first L contactor; l is more than or equal to 1 and N is more than or equal to 1; the control module is used for controlling the first control switch in the Mth group of power distribution units to be disconnected after the first storage battery in the Mth group of power distribution units is charged, wherein M is a positive integer and M is less than or equal to N; or,
when the power output module stops supplying power, the N first contactors are controlled to be disconnected, and the first control switch in the X-th group of power distribution units is controlled to be reversely conducted so that the first storage battery in the X-th group of power distribution units supplies power to the load units in the X-th group of power distribution units, wherein X is a positive integer and is less than or equal to N; or,
when the power supply output module stops supplying power, controlling the Y-th first contactor and at least Z first contactors to be conducted, controlling a first control switch in the Y-th group power distribution unit to be conducted reversely, and controlling first control switches in the Z-group power distribution units corresponding to the at least Z first contactors to be disconnected, so that a first storage battery in the Y-th group power distribution unit supplies power for the Y-th group power distribution unit and the at least Z-group power distribution unit, wherein Y is a positive integer and Y is less than N, and Z is a positive integer and Z is less than N;
Wherein, the power distribution module further includes: a standby power distribution unit;
the backup power distribution unit includes: a second control switch and a second battery pack; the second control switch is connected with the control module;
the switch module further comprises a second contactor corresponding to the standby power distribution unit;
the control module is used for controlling the second contactor corresponding to the standby power distribution unit and the first contactor corresponding to at least one group of power distribution units to be conducted when the power output module stops supplying power, and controlling the second control switch to be conducted reversely so as to supply power to the load units in the power distribution units conducted by the first contactor by the second storage battery;
the load units in each group of power distribution units comprise: a primary power down branch and a secondary power down branch;
the primary power down leg includes: a first current sensor, a third contactor and a primary power-down device; the first current sensor is used for detecting the current of the primary power-down branch, and the third contactor supplies power to the primary power-down equipment when being conducted;
the secondary power down leg includes: a second current sensor and a secondary power-down device; the switch module is connected with the first control switch through the second current sensor and is used for detecting the charge/discharge flow of the first storage battery pack;
The primary power-down branch is connected with the secondary power-down branch in parallel;
the switch module further includes:
at least N third current sensors which are in one-to-one correspondence with the power distribution units;
the third current sensor is used for detecting the current value of the corresponding power distribution unit;
the control module is used for determining an electric charge integral value of each group of power distribution units according to the first current sensor, the second current sensor and the third current sensor;
the control module is used for controlling the P third current sensor to detect the current value of the power distribution unit corresponding to the P third current sensor;
and determining an integral value of a power distribution unit of the P group corresponding to the third current sensor of the P group according to the current value, and charging according to the integral value of the power distribution unit of the P group.
2. The system of claim 1, wherein the first control switch in each of the groups of power distribution units and the second control switch in the backup power distribution unit are both bi-directionally switching power electronic switches.
3. The system as recited in claim 1, further comprising: the storage battery management module is used for managing the storage battery,
the storage battery management module is used for detecting terminal voltage information of the first storage battery pack in each group of power distribution units and sending the detected terminal voltage information of the first storage battery pack in each group of power distribution units to the control module;
And after receiving the terminal voltage information sent by the first storage battery in each group of power distribution units and sent by the storage battery management module, the control module judges whether the floating charge voltage and/or the uniform charge voltage of the first storage battery in the O-th group of power distribution units are lower than the preset floating charge voltage and/or the standard value of the uniform charge voltage, and if so, controls the first control switch in the O-th group of power distribution units to conduct positively so as to charge the first storage battery.
4. The system of claim 3, wherein said control module controls the charge pulse width of each said group of power distribution units by said battery management module based on the capacity of said first battery pack in said each group of power distribution units.
5. The system of claim 1, wherein,
the power output module includes: the system comprises a power supply module, an alternating current power distribution module and a rectification module;
the power module is used for providing alternating current;
the alternating current power distribution module is connected with the power supply module and is used for distributing alternating current provided by the power supply module and supplying power to the rectification module;
the rectification module is connected with the power module through the alternating current distribution module and is used for rectifying alternating current provided by the rectification module and then outputting direct current.
6. The system of claim 1, wherein the first battery pack in each of the plurality of power distribution units is of the type lithium battery or lead acid battery.
7. The system of claim 1, wherein each of said groups of power distribution units in said power distribution module is assigned for use by a different operator.
8. A switching power supply rack for use in the field of communications, for use in a switching power supply system according to any one of claims 1 to 7, comprising:
a frame body;
the power supply output module is embedded in the lower part of the rack body;
the control module is embedded and arranged in the frame body above the power output module;
the switch module is embedded in the frame body above the control module;
the power distribution module is embedded in the rack body above the switch module; the power distribution module comprises N groups of power distribution units which are arranged in parallel; each group of power distribution units comprises a primary power-down port, a secondary power-down port and a storage battery port, wherein the secondary power-down port is fixedly arranged in the rack body above the switch module; the primary power-down port is fixedly arranged in the frame body above the secondary power-down port; the storage battery port is fixedly arranged in the frame body above the primary power-down port.
9. The switching power supply rack of claim 8 wherein said power supply output module comprises: an alternating current power distribution module and a rectification module;
the alternating current power distribution module is fixedly arranged at the lower part of the rack body;
the rectification module is embedded in the frame body above the alternating current power distribution module
And the alternating current power distribution module is connected with the alternating current power distribution module.
10. The switching power supply rack of claim 9 wherein said rectifying module comprises: a metal bin and a rectifying unit of a movable matrix structure; the metal bin with the movable matrix structure is embedded and installed in the rack body above the alternating current power distribution module, and the rectifying unit is installed in the metal bin.
11. A method of controlling a switching power supply system according to any one of claims 1 to 7, wherein the switching module includes at least N first contactors in one-to-one correspondence with the power distribution units; the method comprises the following steps:
when the power output module supplies power, receiving terminal voltage information of a first storage battery pack in an A-th group power distribution unit; judging whether terminal voltage information of a first storage battery in the A-th group power distribution unit is lower than a preset reference value, if yes, controlling the A-th first contactor and a first control switch in the A-th group power distribution unit corresponding to the A-th first contactor to be conducted so as to charge the first storage battery in the A-th group power distribution unit corresponding to the A-th first contactor and supply power to a load unit in the A-th group power distribution unit; otherwise, the first control switch in the A-th group power distribution unit is controlled to be disconnected; a is a positive integer, and A is more than or equal to 1 and less than or equal to N; or,
When the power output module stops supplying power, the switch module is controlled to be turned off, and a first control switch in the B group power distribution unit is controlled to be turned on reversely, so that a first storage battery in the B group power distribution unit supplies power to a load unit in the B group power distribution unit, B is a positive integer and B is less than or equal to N, or,
when the power output module stops supplying power, the C first contactor and at least D first contactors are controlled to be conducted, the first control switch in the C group power distribution unit is controlled to be conducted reversely, the first control switches in the D group power distribution units corresponding to the at least D first contactors are controlled to be disconnected, so that the C group power distribution unit and the at least D group power distribution unit are supplied with power by the first storage battery in the C group power distribution unit, C is a positive integer and C is less than N, D is a positive integer and D is less than N.
12. The method of claim 11, wherein controlling the switching module to open when the power output module ceases to supply power comprises:
and when the power output module stops supplying power, controlling the N first contactors to be disconnected.
13. The method of claim 11, further comprising, after controlling the a-th first contactor and the first control switch in the power distribution unit corresponding to the a-th first contactor to be turned on:
And controlling the pulse width of the charging to the A-th group power distribution unit according to the capacity of the first storage battery in the A-th group power distribution unit.
14. The method of claim 11, wherein receiving terminal voltage information transmitted by the first battery pack in the a-th power distribution unit while the power output module supplies power, and determining whether the terminal voltage information of the first battery pack in the a-th power distribution unit is lower than a preset reference value comprises:
and when the power output module supplies power, receiving terminal voltage information sent by the first storage battery in the A-th group power distribution unit, and judging whether the floating charge voltage and/or the uniform charge voltage of the first storage battery in the A-th group power distribution unit is lower than a preset reference value of the floating charge voltage and/or the uniform charge voltage.
15. The method of claim 11, further comprising, after controlling the switch module and the first control switch in the group a power distribution unit to conduct:
determining the capacity of a first storage battery pack in the A-th group power distribution unit according to the received terminal voltage information of the first storage battery pack in the A-th group power distribution unit;
and distributing the width of the charging pulse to the first storage battery group in the A-group power distribution unit according to the capacity of the first storage battery group in the A-group power distribution unit.
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CN110112793A (en) * 2019-06-13 2019-08-09 中国铁塔股份有限公司 A kind of Switching Power Supply
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