CN209982096U - Battery pack management device for replacing storage battery monomer - Google Patents
Battery pack management device for replacing storage battery monomer Download PDFInfo
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- CN209982096U CN209982096U CN201920426038.3U CN201920426038U CN209982096U CN 209982096 U CN209982096 U CN 209982096U CN 201920426038 U CN201920426038 U CN 201920426038U CN 209982096 U CN209982096 U CN 209982096U
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- storage battery
- battery pack
- power supply
- monomer
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Abstract
The utility model relates to a battery pack management device for replacing a storage battery monomer, which comprises a programmable power supply, the storage battery monomer, a change-over switch, a control panel and a load element, wherein the programmable power supply comprises an anode output end and a cathode output end, the storage battery monomer comprises an anode outgoing line and a cathode outgoing line, the anode outgoing line is connected with the change-over switch and then respectively connected with the anode output end and one end of the load element, and the cathode outgoing line is connected with the change-over switch and then respectively connected with the cathode output end and the other end of the load element; the utility model has the advantages that: the storage battery monomer can be charged independently through the programmable power supply, the problem of charging imbalance caused by inconsistent performance of the monomer is avoided, the service life of the storage battery monomer can be prolonged, the standby power supply of each storage battery monomer in a full charge state can be ensured, and the cruising ability of the whole storage battery set is greatly improved.
Description
Technical Field
The utility model relates to a replacement holds free group battery management device of battery.
Background
The storage battery is used as a core component of the direct current power supply system, and the performance reduction of any single battery in the series storage battery pack can affect the performance of the whole storage battery pack and even can cause the whole system to be incapable of working. The traditional storage battery pack matching is very complicated work, and indexes of the same manufacturer, the same capacity, the same batch, the similar internal resistance, the similar standing voltage and the like are emphasized regardless of the lead-acid storage battery matching or the lithium-ion storage battery matching. However, due to the influence of factors such as technology, production batch and management of storage battery manufacturers, certain discreteness exists between the performances of the actual storage batteries, and storage batteries with similar performances need to be combined together during matching so as to ensure the performances and the service life of the storage batteries. The fact proves that if the storage battery pack cannot be matched well, the storage battery pack is very easy to have discretization of the performance of the storage battery cells in use, and the storage battery pack can fail prematurely. Because the degraded single batteries in the storage battery pack can not be replaced at will, when a certain or part of the storage battery monomers fail in the use process of the traditional storage battery pack, the whole storage battery pack needs to be replaced, and huge economic loss and environmental pollution are caused. On the other hand, when the battery pack is in a charging state, due to the existence of a certain storage battery monomer with performance difference, part of the storage battery monomers cannot be normally fully charged, so that the storage battery pack is always in an undercharging state, and the standby power supply cannot be carried out in a normal fully charged state.
SUMMERY OF THE UTILITY MODEL
The utility model aims to reach the purpose provide a replacement battery free group battery management device, solve current battery monomer and can not normally be full of the technical problem that leads to storage battery to be in the state of oweing the charge all the time.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a battery pack management device for replacing a storage battery monomer comprises a programmable power supply, the storage battery monomer, a change-over switch and a load element, wherein the programmable power supply comprises an anode output end and a cathode output end, the storage battery monomer comprises an anode outgoing line and a cathode outgoing line, the anode outgoing line is connected with the change-over switch and then respectively connected with the anode output end and one end of the load element, and the cathode outgoing line is connected with the change-over switch and then respectively connected with the cathode output end and the other end of the load element;
the program-controlled power supply is connected with the storage battery monomer through the change-over switch to form a charging loop for charging the storage battery monomer;
the load element is connected with the storage battery monomer through the selector switch to form a discharge loop for discharging the storage battery monomer;
and the programmable power supply is also connected with a control panel for controlling the output of the programmable power supply.
Preferably, current transformers are arranged on the charging loop and the discharging loop and connected with the control panel.
Preferably, the battery pack management device further comprises a voltage acquisition circuit, the voltage acquisition circuit is respectively connected with the charging loop and the discharging loop, and the voltage acquisition circuit is connected with the control panel.
Preferably, the change-over switch is a mechanical switch or a semiconductor switch, and the change-over switch is connected with the control panel.
Preferably, the programmable power supply further comprises an input end, and the input end is connected with a rectifier or/and an alternating current.
Preferably, the discharge circuit is further provided with a control switch for controlling the on and off of the discharge circuit.
Preferably, the battery pack management device further comprises a circuit board, and the programmable power supply, the change-over switch, the control board and the load element are all mounted on the circuit board.
Preferably, the battery pack management device further comprises a box body, and the circuit board is arranged in the box body.
To sum up, the utility model has the advantages that: 1. the storage battery monomers can be charged independently through the program control power supply, the problem of charge imbalance caused by inconsistent performance of the monomers is avoided, the service life of the storage battery monomers can be prolonged, each storage battery monomer can be guaranteed to be supplied with power in a fully charged state in a standby mode, the cruising ability of the whole storage battery pack is greatly improved, in the using process, the good storage battery monomers can be connected in parallel to the positive electrode and the negative electrode of the degraded storage battery monomers, degraded batteries are removed, normal operation of the storage battery pack is guaranteed, the degraded battery monomers can be removed on the premise that system power supply is not influenced, the replaced storage battery monomers cannot influence normal charging and discharging of the original storage battery pack, and the problems of economic loss and environmental protection caused by the fact that the whole storage battery pack needs to be replaced due to the fact that a certain storage battery monomer is degraded in;
2. the current transformer is arranged, so that when the single storage battery is charged or discharged, the charging current or the discharging current can be collected and monitored on line in real time, and the charging or discharging safety performance of the single storage battery can be ensured;
3. the voltage acquisition circuit is arranged, so that when the storage battery monomer is charged or discharged, the charging voltage or the discharging voltage can be acquired and monitored on line in real time, and the charging or discharging safety performance of the storage battery monomer can be ensured;
4. the change-over switch is set to be a mechanical switch or a semiconductor switch, so that the quick connection and disconnection of the change-over switch can be realized, the connection and disconnection of the change-over switch are controlled by the control panel, and any storage battery monomer can be independently controlled to be independently charged or discharged;
5. the input end is arranged and connected with a rectifier or/and alternating current, so that a power supply mode can be selected according to requirements, different requirements are met, and different working environments can be adapted;
6. the control switch is arranged, so that the on-off control of the discharging loop can be realized, the mutually independent work of the discharging loop and the charging loop is ensured, and the charging and discharging switching of the single storage battery is ensured;
7. the circuit board can realize the uniform installation and fixation of the programmable power supply, the change-over switch, the control panel and the load element, and realize the integral integrated assembly;
8. the setting of box can realize the unified of circuit board and place, can prevent that whole group battery management device from receiving the influence of external force, reduces the damage of circuit board, makes group battery management device wholly be small and exquisite lightweight setting.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack management device for replacing a single storage battery according to the present invention;
fig. 2 is a schematic block diagram of the battery pack management device for replacing the single storage battery of the present invention.
Reference numerals:
the device comprises a program-controlled power supply 1, a storage battery monomer 2, a change-over switch 3, a control panel 4, a load element 5, a charging loop 6, a discharging loop 7, a current transformer 9, a voltage acquisition circuit 10, an input end 11, a control switch 12, a circuit board 13, a box 14 and a rectifier 15.
Detailed Description
As shown in fig. 1 and 2, a battery pack management device for replacing a single storage battery includes a programmable power supply 1, a single storage battery 2, a change-over switch 3 and a load element 5, where the single storage battery 2 is a lead-acid battery, a lithium-ion battery or a nickel-hydrogen battery, the voltage of the single storage battery 2 is 2V, 6V or 12V, the programmable power supply 1 includes a positive output end and a negative output end, the single storage battery 2 includes a positive lead-out wire and a negative lead-out wire, the positive lead-out wire is connected to the change-over switch 3 and then respectively connected to the positive output end and one end of the load element 5, and the negative lead-out wire is connected to the change-over switch 3 and then respectively connected to the negative output end and the other end; the program-controlled power supply 1 is connected with the storage battery monomer 2 through the change-over switch 3 to form a charging loop 6 for charging the storage battery monomer 2; the load element 5 is connected with the storage battery single body 2 through the selector switch 3 to form a discharge loop 7 for discharging the storage battery single body 2; and the programmable power supply 1 is also connected with a control panel 4 for controlling the output of the programmable power supply 1.
The storage battery single bodies 2 can be charged independently through the program control power supply 1, the problem of charge imbalance caused by inconsistent performance of the single bodies is avoided, the service life of the storage battery single bodies 2 can be prolonged, each storage battery single body 2 can be ensured to be supplied with power in a fully charged state in a standby mode, the cruising ability of the whole storage battery pack is greatly improved, in the using process, can connect in parallel good battery monomer 2 at the 2 positive negative poles of degradation battery monomer, reject the degradation battery again, both guarantee storage battery's normal operating, under the prerequisite that does not influence the system power supply, can reject the degradation battery monomer again, the battery monomer 2 after the replacement can not influence original storage battery's normal charge-discharge, avoid traditional mode to make the group battery lose efficacy in advance and need change economic loss and the environmental protection problem that whole group battery brought because of certain battery monomer 2 degradation.
The battery pack management device is characterized in that current transformers 9 are arranged on the charging loop 6 and the discharging loop 7, the current transformers are connected with the control panel, the battery pack management device further comprises a voltage acquisition circuit 10, the voltage acquisition circuit 10 is respectively connected with the charging loop 6 and the discharging loop 7, the voltage acquisition circuit is connected with the control panel, when the storage battery monomer 2 is charged or discharged, the charging current or the discharging current, the charging voltage or the discharging voltage can be acquired in real time, and the charging or discharging safety performance of the storage battery monomer 2 can be ensured.
Change over switch 3 is mechanical switch, change over switch 3 links to each other with control panel 4, realizes change over switch 3's quick switch on and disconnection, and controls switch 3's switch on and disconnection through control panel 4, can charge alone or discharge alone by any battery monomer 2 of solitary control, programmable power supply 1 still includes input 11, be connected with rectifier and alternating current on the input 11, can select the power supply mode according to the demand, satisfy different demands, can adapt to different operational environment, still be equipped with control discharge circuit 7 on the return circuit 7 and switch on and the control of disconnection, control switch 12 can realize the control to discharge circuit 7's switch on and disconnection, ensures discharge circuit 7 and the work of charge circuit 6 mutual independence, ensures the switching of the charge discharge of battery monomer 2.
The battery pack management device further comprises a circuit board 13, the programmable power supply 1, the change-over switch 3, the control panel 4 and the load element 5 are all installed on the circuit board 13, the unified installation of the programmable power supply 1, the change-over switch 3, the control panel 4 and the load element 5 can be realized and fixed, the whole integrated assembly is realized, the battery pack management device further comprises a box body 14, the circuit board 13 is arranged in the box body 14, the box body 14 is arranged, the unified placement of the circuit board 13 can be realized, the whole battery pack management device can be prevented from being influenced by external force, the damage to the circuit board 13 is reduced, and the whole battery pack management device is small and exquisite and portable.
When the storage battery monomer 2 is charged, the control panel 4 controls the switch 3 to be closed, controls the program-controlled power supply 1 to charge the storage battery monomer 2 independently according to a set value, and simultaneously collects online monitoring charging current and charging voltage in real time through the current transformer 9 and the voltage collecting circuit 10; when the storage battery monomer 2 discharges, the control board 4 controls the control switch 12 in the discharge loop 7 to be closed, the storage battery monomer 2 discharges through the load element 5, and meanwhile, the control board 4 collects discharge voltage and current in real time, calculates discharge capacity and controls discharge.
The rectifier 15 pre-charges the battery pack: the rectifier follows the normal battery charging operation until the battery enters a float state.
The program-controlled power supply 1 charges the storage battery monomer 2 independently: the control board 4 controls the switch 3 of one storage battery monomer 2 to be closed, and controls the program-controlled power supply 1 to charge the storage battery monomer 2 at the set constant charging voltage of the storage battery monomer 2 until the charging current drops to a trickle state, and the control board 4 controls the switch 3 to be opened, so that the storage battery monomer 2 is stopped to be charged, and the next storage battery monomer 2 is charged in the same way.
On-line capacity checking of the storage battery monomer 2: the method comprises the steps that a storage battery monomer 2 needing on-line capacity checking is selected, a control board 4 controls a change-over switch 3 connected with the anode and the cathode of the storage battery monomer 2 to be closed, a control switch 12 is closed, the storage battery monomer 2 discharges through a load element 5, the control board 4 obtains discharge voltage and discharge current in real time, the capacity of the storage battery monomer 2 is calculated, and when the control board 4 obtains that the discharge voltage and the discharge current meet discharge stop conditions, the control board 4 controls the storage battery change-over switch 3 to be switched off, and discharge is stopped.
Deteriorated battery cell 2 was replaced alone: the storage battery monomer 2 with good performance is connected in parallel with the positive electrode and the negative electrode of the degraded storage battery monomer 2, and then the degraded battery is removed, so that the normal operation of the storage battery pack is ensured, and the degraded battery monomer can be removed independently.
For example: taking a lead-acid storage battery pack with a total voltage of 48V and a total capacity of 300AH as an example, 24 storage battery cells B1, B2 and B3.. B24 are connected in series, the positive electrode and the negative electrode of each storage battery cell 2 are respectively connected with the change-over switch 3 in parallel, the positive electrode and the negative electrode of the storage battery cell B1 are respectively connected with the change-over switches K1 and K2 in parallel, the positive electrode and the negative electrode of the storage battery cell B2 are respectively connected with the change-over switches K3 and K4 in parallel, and according to the connection mode, the positive electrode and the negative electrode of the storage battery cell B24 are respectively connected with the change-over switches 3K47 and K48 in parallel, and under a normal state, the change-over switches are in an off state, if a rectifier direct current is adopted to supply power.
Charging: the rectifier is started to pre-charge the group of 48V lead-acid storage battery pack, the charging is carried out in a constant current-first and then constant voltage manner with the charging current of 30A and the charging voltage of 56V, when the charging current is detected to be lower than 3A, the programmable power supply 1 is started to charge the storage battery monomers 2 one by one, the control board 4 controls the switch K1 and the switch K2 to be closed to charge the storage battery monomers 2B1, and controls the program-controlled power supply 1 to carry out single equalizing charge on the storage battery monomer 2 in a constant-voltage current-limiting mode, when the charging current drops to the trickle state, at which time the storage battery monomer 2 is already in the full charge state, the control board 4 controls the switches K1 and K2 to be switched off, the charging of the storage battery monomer B1 is stopped, the next storage battery monomer B2 is switched to be charged, the charging mode is consistent with the above description, and the storage battery monomers 2 of the whole battery pack are sequentially charged one by one according to the mode.
Discharging: when on-line nuclear capacity discharging needs to be performed on a certain storage battery monomer 2, such as a storage battery monomer B2, the control board 4 controls the switching switches K3 and K4 connected with the positive electrode and the negative electrode of the B2 to be closed, meanwhile, the control switch 12 of the discharging loop 7 is closed, the discharging loop 7 is switched on, the B2 discharges externally, the control board 4 obtains the discharging voltage and the discharging current in real time, the discharging capacity is calculated according to the discharging voltage and the discharging current, when the discharging voltage or the discharging time reaches a set discharging stop condition, the control board 4 controls the control switch 12L to be switched off, and the program-controlled power supply 1 is controlled to be the B2 to perform independent charging in a constant.
Replacement of the deteriorated battery: if the battery cell B3 has been degraded, the performance is poor, the consistency is poor, and the battery cell 2 needs to be replaced in time, otherwise the power supply capability of the whole battery pack will be affected. Referring to fig. 1, a replacement battery with good performance can be connected in parallel to a point a at the positive end and a point B at the negative end of a battery B3, and then the battery B3 is removed, so that the method does not affect the power supply of the storage battery pack, and can remove and replace the degraded monomer, and the newly replaced storage battery monomer 2 is charged by the method provided by the invention, so that the power can be supplied to the outside in a full-charge state at any time, and the normal charge and discharge of the whole storage battery pack can not be affected.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (8)
1. A battery pack management device for replacing a storage battery cell, characterized in that: the storage battery single body comprises an anode outgoing line and a cathode outgoing line, the anode outgoing line is connected with the change-over switch and then respectively connected with the anode output end and one end of the load element, and the cathode outgoing line is connected with the change-over switch and then respectively connected with the cathode output end and the other end of the load element;
the program-controlled power supply is connected with the storage battery monomer through the change-over switch to form a charging loop for charging the storage battery monomer;
the load element is connected with the storage battery monomer through the selector switch to form a discharge loop for discharging the storage battery monomer;
and the programmable power supply is also connected with a control panel for controlling the output of the programmable power supply.
2. A battery pack management apparatus for replacing a battery cell according to claim 1, wherein: and current transformers are arranged on the charging loop and the discharging loop and connected with the control panel.
3. A battery pack management apparatus for replacing a battery cell according to claim 2, wherein: the battery pack management device further comprises a voltage acquisition circuit, the voltage acquisition circuit is respectively connected with the charging circuit and the discharging circuit, and the voltage acquisition circuit is connected with the control panel.
4. A battery pack management apparatus for replacing a battery cell according to claim 1, wherein: the change-over switch is a mechanical switch or a semiconductor switch and is connected with the control panel.
5. A battery pack management apparatus for replacing a battery cell according to claim 1, wherein: the program-controlled power supply also comprises an input end, and a rectifier or/and alternating current are/is connected to the input end.
6. A battery pack management apparatus for replacing a battery cell according to claim 1, wherein: and the discharging loop is also provided with a control switch for controlling the on and off of the discharging loop.
7. A battery pack management apparatus for replacing a battery cell according to claim 1, wherein: the battery pack management device further comprises a circuit board, and the program-controlled power supply, the change-over switch, the control panel and the load element are all installed on the circuit board.
8. A battery pack management apparatus for replacing a battery cell according to claim 7, wherein: the battery pack management device further comprises a box body, and the circuit board is arranged in the box body.
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| CN201920426038.3U CN209982096U (en) | 2019-03-29 | 2019-03-29 | Battery pack management device for replacing storage battery monomer |
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| CN201920426038.3U CN209982096U (en) | 2019-03-29 | 2019-03-29 | Battery pack management device for replacing storage battery monomer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323716A (en) * | 2020-05-12 | 2020-06-23 | 陈永强 | Device and method for judging reliability of battery capacity and method for improving performance of storage battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323716A (en) * | 2020-05-12 | 2020-06-23 | 陈永强 | Device and method for judging reliability of battery capacity and method for improving performance of storage battery |
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