CN209805465U - Storage battery pack topological structure capable of prolonging service life of storage battery - Google Patents
Storage battery pack topological structure capable of prolonging service life of storage battery Download PDFInfo
- Publication number
- CN209805465U CN209805465U CN201920885837.7U CN201920885837U CN209805465U CN 209805465 U CN209805465 U CN 209805465U CN 201920885837 U CN201920885837 U CN 201920885837U CN 209805465 U CN209805465 U CN 209805465U
- Authority
- CN
- China
- Prior art keywords
- storage battery
- diode
- loop
- relay
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a storage battery topological structure capable of prolonging the service life of a storage battery, which comprises at least two loops which are connected in parallel, wherein a storage battery module and a diode are connected in series in each loop and are provided with a current sensor, the diode is also connected in parallel with a relay, wherein, the relay can switch the diode to be in a short circuit or working state, the current sensor is used for detecting the direction of current in the loop, and the current conduction direction of the diode is consistent with the discharge current direction of the storage battery module in the loop; the utility model discloses a can improve storage battery topological structure simple structure of battery life-span has solved the parallelly connected problem that can cause mutual charge-discharge by oneself between the storage battery of battery, and the output of battery comes the short circuit diode through the relay, has reduced the loss and has not had the voltage drop.
Description
Technical Field
The utility model relates to a battery technical field especially relates to a can improve storage battery topological structure in battery life-span.
Background
With the vigorous development of electronic technology, the storage battery power supply is widely applied to each field in life, the electric energy is stored by the storage battery, and the electric energy can be applied to occasions without power grid power supply or continuous movement, such as continuous power supply by using the storage battery as a load during power failure, power supply for an electric vehicle by mounting the storage battery on the electric vehicle, and the like. The wide application of the storage battery provides great convenience for daily life of people and greatly improves the working efficiency.
In order to prolong the power supply time of the storage batteries, the storage batteries are usually connected in parallel by the same type of storage batteries, so as to increase the storage capacity. However, for reasons such as improving the life of the battery packs and maintaining the potential balance between the battery packs, the parallel-connected batteries require the same voltage for each battery, and the battery packs of completely different types and voltage levels cannot be charged or discharged in parallel. Because there are always differences among individuals in a battery pack, such as the internal resistance and capacity of a battery, the differences do not tend to disappear. When the storage batteries are in a non-working state, potential imbalance among the storage battery packs can be caused due to differences among the storage batteries, so that the storage batteries can be automatically charged and discharged, the storage capacity of the batteries is reduced, or overcharge of a certain battery is caused, and the service life of the storage batteries is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a can improve battery life's storage battery topological structure, prevents to charge and discharge by oneself between the parallelly connected group battery, improves the life-span of battery.
The technical scheme of the utility model is that: a storage battery pack topological structure capable of prolonging service life of a storage battery comprises at least two loops which are connected in parallel, wherein a storage battery module and a diode are connected in each loop in series, a current sensor is arranged in each loop, each diode is also connected in parallel with a relay, the relays can switch the diodes to be in a short circuit or working state, the current sensors are used for detecting the direction of current in the loops, and the current conduction direction of the diodes is consistent with the discharge current direction of the storage battery module in the loops.
Preferably, the relay is a normally open relay followed by a normally closed relay.
Further, the storage battery pack topological structure capable of prolonging the service life of the storage battery further comprises a contactor, wherein the contactor is connected with the at least two loops in parallel and in series and is used for controlling the power-on and power-off of the whole loop for supplying power to an external circuit.
Furthermore, at least one storage battery is arranged in the storage battery module.
Furthermore, the storage battery module in each loop further comprises a charging end, wherein the charging end comprises a positive charging end and a negative charging end, the positive charging end is connected with the positive pole of the storage battery module, and the negative charging end is connected with the negative pole of the storage battery module.
the utility model has the advantages that: the utility model discloses a can improve storage battery topological structure in battery life has solved the parallelly connected problem that can cause mutual charge and discharge by oneself between the storage battery of battery, and the output of battery comes the short circuit diode through the relay, has reduced the loss and has not had the voltage drop, and this circuit structure is simple, easy to maintain.
Drawings
FIG. 1 is a circuit diagram of a storage battery topology structure capable of prolonging the service life of a storage battery
FIG. 2 is a circuit diagram of a storage battery topology structure according to the second embodiment of the present invention
Reference numerals: 1 storage battery, 2 diodes, 3 relays, 4 current sensors, 5 contactors, 6 loads, 7 positive charging terminals and 8 negative charging terminals.
Detailed Description
The following describes an implementation structure of the present invention with reference to the drawings.
Example one
As shown in fig. 1, a battery pack topology structure capable of improving the service life of a battery includes two parallel circuits, each circuit is connected in series with a battery module 1 and a diode 2 and is provided with a current sensor 4, in this embodiment, the battery module 1 selects a battery, each diode 2 is also connected in parallel with a relay 3, the relay 3 selects a normally open relay (i.e. each diode is connected in parallel with a pair of normally open contacts in a relay), the normally open relay 3 can switch the diode 2 to be in a short circuit or working state, when the normally open relay 3 is turned off, the diode 2 is in a working state (here, the working state is that the diode 2 is connected in series in the circuit and is not in the short circuit state), the current sensor 4 is used for detecting the direction of current in the circuit, the current conducting direction of the diode 2 is consistent with the discharging current direction of the battery 1 in the circuit, that is, the positive electrode of the battery 1 is connected to the positive electrode of the diode 2 or the negative electrode of the battery 1 is connected to the negative electrode of the diode 2, and in this embodiment, the positive electrode of the battery 1 is connected to the positive electrode of the diode 2.
In order to control the power-on and power-off of the whole loop for supplying power to an external circuit, a contactor 5 is added, the contactor 5 is connected with the two parallel loops in series, a load 6 is also connected with the contactor 5 and the two parallel loops in series to form a complete loop, and the contactor 5 can control the power-on or power-off of the power supply to the load 6. In order to charge the storage battery 1 in each loop without being influenced by the reverse cut-off of the diode 2 in the loop, the diode 2 is bypassed, and charging terminals are added to the positive and negative terminals in the storage battery 1, wherein the charging terminals comprise a positive charging terminal 7 and a negative charging terminal 8, the positive charging terminal 7 is connected with the positive pole of the storage battery 1, and the negative charging terminal 8 is connected with the negative pole of the storage battery 1.
The working principle is as follows:
When the contactor 5 is disconnected, namely the storage battery pack is not in a working state (the storage battery pack is not in a discharging state), the relays 3 in all the circuits are in a disconnected state, at the moment, the diode 2 is in a working state, namely the diode is connected in the circuit in series, and due to the principle that the diode 2 is cut off reversely, the two groups of storage batteries 1 cannot be charged and discharged mutually. When the contactor 5 is closed, namely the battery pack is in a working state (the battery pack is in a discharging state), the storage batteries 1 in the two loops are connected into the loops for discharging, but the diode 2 is connected into the loop, in order to reduce the voltage drop and energy loss caused by the diode, the current sensor 4 in the loop judges the direction of the current of the loop, if the current is normal, the normally open relay 3 on the loop is closed, the normally open relay 3 is closed, the diode 2 is in a short-circuit state, the voltage in the whole loop is equal to the voltage of the storage batteries at the moment, no voltage drop and the loss of the diode exist, when the voltage of the storage batteries 1 in a certain loop is low, mutual charging and discharging between the storage batteries are about to occur, the current sensor 4 in the loop detects that the direction of the current is abnormal (the direction deflection), and then the relay 3 in the loop is controlled to be, the diode 2 in the loop is in a working state, and the storage battery pack cannot be charged and discharged automatically due to the reverse cut-off characteristic of the diode 2, so that the service life of the storage battery is prolonged.
example two
As shown in fig. 2, a battery pack topology structure capable of improving the service life of a battery includes a plurality of (n) loops connected in parallel, each loop is connected in series with a battery module 1 and a diode 2 and provided with a current sensor 4, in this embodiment, the battery module 1 selects a plurality of batteries, each diode 2 is further connected in parallel with a relay 3, the relay 3 selects a normally open relay (i.e., each diode is connected in parallel with a pair of normally open contacts in a relay), the normally open relay 3 can switch the diode 2 to be in a short circuit or working state, when the normally open relay 3 is turned off, the diode 2 is in a working state (here, the working state is that the diode 2 is connected in series into the loop and is not in the short circuit state), the current sensor 4 is used for detecting the direction of current in the loop, the current conducting direction of the diode 2 is consistent with the discharging current direction of the battery module 1 in the loop, that is, the positive electrode of the battery module 1 is connected to the positive electrode of the diode 2 or the negative electrode of the battery module 1 is connected to the negative electrode of the diode 2, and the positive electrode of the battery module 1 is connected to the positive electrode of the diode 2 in this embodiment.
In order to control the power-on and power-off of the whole loop for supplying power to the external circuit, a contactor 5 is added, the contactor 5 is connected with the plurality of parallel loops in series, a load 6 is also connected with the contactor 5 and the plurality of parallel loops in series to form a complete loop, and the contactor 5 can control the power-on or power-off of the power supply to the load 6. In order to enable the storage battery module 1 in each loop to be charged without being influenced by the reverse cut-off of the diode 2 in the loop, the diode 2 is bypassed, and charging terminals are added to the positive and negative terminals in the storage battery module 1, wherein the charging terminals comprise a positive charging terminal 7 and a negative charging terminal 8, the positive charging terminal 7 is connected with the positive pole of the storage battery module 1, and the negative charging terminal 8 is connected with the negative pole of the storage battery module 1.
The working principle is as follows:
When the contactor 5 is disconnected, namely the storage battery pack is not in a working state (the storage battery pack is not in a discharging state), the relays 3 in all the circuits are in a disconnected state, at the moment, the diodes 2 are in a working state, namely the diodes are connected in the circuits in series, and due to the principle that the diodes 2 are cut off in the reverse direction, all the storage battery modules 1 cannot be charged and discharged mutually. When the contactor 5 is closed, that is, when all the battery modules 1 are in a working state (all the battery modules 1 are in a discharging state), the battery modules 1 in a plurality of (n) loops are connected into the loop to discharge, but at the moment, the diode 2 is connected into the loop, in order to reduce the voltage drop and energy loss brought by the diode, the current sensor 4 in the loop judges the direction of the current of the loop, if the current is normal, the normally open relay 3 on the loop is closed, the normally open relay 3 is closed, the diode 2 is in a short-circuit state, the voltage in the whole loop is equal to the voltage of the battery modules 1 at the moment, no voltage drop and no loss of the diode 2 exist, when the voltage of the battery modules 1 in a certain loop is low, mutual charging and discharging between the battery modules 1 are about to occur, and the current sensor 4 in the loop detects that the direction of the current is abnormal (direction deflection), then the relay 3 in the loop is controlled to be switched off, so that the diode 2 in the loop is in a working state, and the storage battery modules 1 cannot be charged and discharged automatically due to the reverse cut-off characteristic of the diode 2, so that the service life of the storage battery is prolonged.
The above description is only a detailed description of the present invention. The scope of the present invention is not limited thereto, and any changes or simple substitutions which are not thought of through creative work should be covered within the scope of the present invention.
Claims (5)
1. A storage battery pack topological structure capable of prolonging service life of a storage battery is characterized in that: the system comprises at least two loops which are connected in parallel, wherein a storage battery module and a diode are connected in series in each loop and are provided with a current sensor, and each diode is also connected in parallel with a relay; the relay can switch the diode to be in a short circuit state or a working state, the current sensor is used for detecting the direction of current in the loop, and the current conduction direction of the diode is consistent with the discharge current direction of the storage battery module in the loop.
2. The battery pack topology according to claim 1, wherein: the relay is a normally open relay.
3. The battery pack topology according to claim 1, wherein: the contactor is connected with the at least two loops in parallel and in series and used for controlling the power-on and power-off of the whole loop for supplying power to the external circuit.
4. The battery pack topology according to claim 1, wherein: at least one storage battery is arranged in the storage battery module.
5. A battery pack topology according to claim 1, 2, 3 or 4, wherein: the storage battery module in each loop further comprises a charging end, and the charging end comprises a positive charging end and a negative charging end; the positive charging end is connected with the positive pole of the storage battery module, and the negative charging end is connected with the negative pole of the storage battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885837.7U CN209805465U (en) | 2019-06-13 | 2019-06-13 | Storage battery pack topological structure capable of prolonging service life of storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885837.7U CN209805465U (en) | 2019-06-13 | 2019-06-13 | Storage battery pack topological structure capable of prolonging service life of storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805465U true CN209805465U (en) | 2019-12-17 |
Family
ID=68833591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920885837.7U Expired - Fee Related CN209805465U (en) | 2019-06-13 | 2019-06-13 | Storage battery pack topological structure capable of prolonging service life of storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209805465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086955A (en) * | 2020-07-27 | 2020-12-15 | 国网综合能源服务集团有限公司 | Multi-battery mutual backup direct current system for transformer substation and automatic control method thereof |
| CN112994191A (en) * | 2021-04-30 | 2021-06-18 | 深圳市永联科技股份有限公司 | Current control unit, power supply unit and vehicle |
| CN114123445A (en) * | 2021-12-27 | 2022-03-01 | 广东电网有限责任公司 | Storage battery standby circuit |
-
2019
- 2019-06-13 CN CN201920885837.7U patent/CN209805465U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086955A (en) * | 2020-07-27 | 2020-12-15 | 国网综合能源服务集团有限公司 | Multi-battery mutual backup direct current system for transformer substation and automatic control method thereof |
| CN112994191A (en) * | 2021-04-30 | 2021-06-18 | 深圳市永联科技股份有限公司 | Current control unit, power supply unit and vehicle |
| CN112994191B (en) * | 2021-04-30 | 2021-09-24 | 深圳市永联科技股份有限公司 | Current control unit, power supply unit and vehicle |
| CN114123445A (en) * | 2021-12-27 | 2022-03-01 | 广东电网有限责任公司 | Storage battery standby circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9643506B2 (en) | Portable backup charger | |
| CN209805465U (en) | Storage battery pack topological structure capable of prolonging service life of storage battery | |
| US20110181245A1 (en) | Unitized charging and discharging battery management system and programmable battery management module thereof | |
| CN202616810U (en) | Backup battery | |
| CN102624050A (en) | Battery management system capable of automatically shutting off unavailable units in serial-connection battery pack | |
| CN105656168A (en) | Ceaseless zero loop current safe and quick switching battery pack | |
| CN112737015B (en) | Lithium battery balance control system and control method based on SOC | |
| CN111129619A (en) | Power battery cluster management system | |
| CN109088461A (en) | A kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge and method | |
| CN110571883A (en) | Lithium battery charging current limiting system | |
| CN112701745A (en) | Lithium battery management system and control method thereof | |
| CN111682626A (en) | BMS battery management system and management method suitable for energy storage cabinet | |
| CN102545322A (en) | Battery module, power supply system and battery power supply control method | |
| CN202535104U (en) | Battery management system capable of automatically cutting off failure units in series-connected battery pack | |
| CN206099397U (en) | Moving equilibrium self -adaptation voltage detection circuit | |
| CN210517868U (en) | Energy storage power supply | |
| CN210839035U (en) | Energy storage power supply | |
| CN201504116U (en) | Outdoor communication power source | |
| CN215646321U (en) | Formation and capacitance circuit, equipment and system | |
| CN104917255A (en) | Equalizing charge and discharge and protection circuit for battery pack | |
| CN114300764A (en) | Battery module and energy storage system | |
| US20050212483A1 (en) | Charging/discharging management system for lithium battery packs | |
| CN210608584U (en) | Charge-discharge circuit of three-level battery pack | |
| CN102545274B (en) | Lead-acid battery charger and charging method thereof | |
| CN216981579U (en) | Anti-reverse connection protection circuit of lithium battery charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 |