CN217590289U - Accumulator battery - Google Patents
Accumulator battery Download PDFInfo
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- CN217590289U CN217590289U CN202123431842.7U CN202123431842U CN217590289U CN 217590289 U CN217590289 U CN 217590289U CN 202123431842 U CN202123431842 U CN 202123431842U CN 217590289 U CN217590289 U CN 217590289U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a battery technical field especially relates to a storage battery, including a plurality of battery cells and be used for the power supply bus to battery cell charge-discharge, still include a plurality of charge-discharge control circuits that are used for controlling battery cell independent charging or discharge, battery cell and charge-discharge control circuit complete sets set, every battery cell is connected to the power supply bus through the charge-discharge control circuit that corresponds and charges or discharges in order to pass through the power supply bus. The single battery in the storage battery pack is connected to the power supply bus through the charge and discharge control circuit so as to charge or discharge through the power supply bus, when the single battery is fully charged, the charge circuit of the single battery is disconnected through the charge and discharge control circuit, the single battery can be prevented from being charged or discharged in a transition mode, and the service life of the storage battery pack can be longer.
Description
Technical Field
The present disclosure relates to the field of battery technology, and in particular, to a battery pack.
Background
The storage battery pack has excellent storage and discharge performance and is widely applied to various environments. In some cold environments, it is desirable to add a heating device to the battery pack.
Because the electric quantity of the single batteries in the storage battery pack is different, the electric quantity of a part of single batteries is fully charged firstly during charging, and the part of single batteries can be overcharged, so that the service life of the overcharged single batteries is reduced, and the service life and the capacity of the storage battery pack can be rapidly reduced. If the amount of power consumed by each battery is more uneven after each single battery is individually provided with a heating loop, the service life and the capacity of the storage battery pack can be more quickly reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a secondary battery pack, which may have a longer service life.
The utility model provides a storage battery, storage battery includes a plurality of battery cells and is used for the power supply bus to battery cell charge-discharge, still includes a plurality of charge-discharge control circuit that are used for controlling battery cell independent charging or discharge, battery cell and charge-discharge control circuit integrated into one piece set, every battery cell is connected to the power supply bus through the charge-discharge control circuit that corresponds and charges or discharges in order to charge through the power supply bus.
Optionally, the storage battery pack further comprises a constant temperature heating device, the constant temperature heating device is connected to the single battery to heat the single battery, and the constant temperature heating device is connected to the power supply bus to obtain electric energy through the power supply bus.
Optionally, the constant temperature heating device is a constant temperature heating film, and the constant temperature heating film covers each single battery to maintain the temperature of each single battery.
Optionally, the charge and discharge control circuit includes a charging line and a discharging line, the charging line is used for charging only the single battery, and the discharging line is used for discharging only the single battery.
Optionally, the storage battery pack further includes a controller, and the controller is connected to the charge and discharge control circuit to control the charging line or the discharging line of the charge and discharge control circuit to be turned on or off.
Optionally, the charge and discharge control circuit includes: the circuit comprises an inductor, a first switch, a second switch, a first diode and a second diode;
the first end of the first switch is connected with the single battery, the second end of the first switch is connected with the cathode of the second diode, the cathode of the second diode is connected with the first end of the inductor, and the second end of the inductor is connected with the power supply bus to form a charging circuit;
the positive pole of the first diode is connected with the single battery, the negative pole of the first diode is connected with the first end of the second switch, the second end of the second switch is connected with the first end of the inductor, and the second end of the inductor is connected with the power supply bus to form a discharge circuit.
Optionally, the controller controls the first switch to be closed and the second switch to be opened, so as to realize independent charging of the single battery;
the controller controls the first switch to be switched off and the second switch to be switched on so as to realize independent discharge of the single battery.
Optionally, the charge and discharge control circuit includes: the circuit comprises an inductor, a first switch, a second switch, a first diode and a second diode;
the first end of the first switch is connected with the single battery, the second end of the first switch is connected with the anode of the second diode, the cathode of the second diode is connected with the first end of the inductor, and the second end of the inductor is connected with the power supply bus to form a discharge circuit;
the negative pole of first diode is connected the battery cell, and the first end of second switch is connected to the positive pole of first diode, and the first end of inductance is connected to the second end of second switch, and the power supply generating line is in order to form the charging circuit is connected to the second end of inductance.
Optionally, the controller controls the first switch to be closed and the second switch to be opened, so as to realize independent discharge of the single battery;
the controller controls the first switch to be switched off and the second switch to be switched on so as to realize independent charging of the single battery.
Optionally, the storage battery pack further comprises an electric quantity detection device, the electric quantity detection device is connected to the single battery to detect the electric quantity of the single battery and send the electric quantity to the controller, the controller stores first preset electric quantity and second preset electric quantity, when the electric quantity of the single battery reaches the first preset electric quantity, the controller controls the single battery to independently discharge, and when the electric quantity of the single battery reaches the second preset electric quantity, the controller controls the single battery to independently charge.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the single battery in the storage battery pack is connected to a power supply bus through a charge and discharge control circuit to charge or discharge through the power supply bus, and when the single battery is fully charged, the charge circuit of the single battery is independently disconnected through the charge and discharge control circuit, but the discharge circuit of the single battery is reserved. When the power supply bus loses the electric energy supply of the mains supply suddenly, the single battery can discharge for the power supply bus, so that the constant-temperature heating device can continue to obtain the electric energy from the power supply bus to maintain the constant temperature, and on the other hand, the phenomenon of overcharge caused by different electric quantities of the single batteries in the storage battery can be avoided by disconnecting the charging circuit of the single batteries.
After the electric quantity of battery cell emptys, also can pass through charge and discharge control circuit independently breaks the discharge circuit to the power supply bus, nevertheless remains the charging circuit that battery cell is connected to the power supply bus, avoids battery cell overdischarge or consumes the electric energy that other batteries discharged. The service life of the storage battery pack provided by the embodiment of the disclosure is longer.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a charging and discharging control circuit of a battery pack according to an embodiment of the disclosure;
fig. 3 is a second schematic structural diagram of a charge/discharge control circuit of the battery pack according to the embodiment of the disclosure;
fig. 4 is a third schematic structural diagram of a battery pack according to the embodiment of the present disclosure.
Wherein, 1, a single battery; 2. a charge and discharge control circuit; 3. a power supply bus; 4. a constant temperature heating device; 5. a controller; 6. electric quantity detection device.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Example 1:
fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present disclosure. As shown in fig. 1, the storage battery pack includes a single battery 1, a constant temperature heating device 4, a power supply bus 3, and a charge/discharge control circuit 2.
The single batteries 1 and the charge-discharge control circuit 2 are provided with a plurality of groups in a group matching manner. The set is that the number of the single batteries 1 is larger than that of the single batteries, and the number of the charge and discharge control circuits 2 is larger than that of the single batteries 1, so that each single battery 1 can be connected to the power supply bus 3 through the corresponding charge and discharge circuit.
The single battery 1 is connected to the power supply bus 3 through the charge and discharge control circuit 2 to obtain electric energy stored in the power supply bus 3 or discharge the electric energy stored in the single battery 1 to the power supply bus 3. The power supply bus 3 is equivalent to an energy collecting and distributing place, and can be connected to an external power supply to obtain electric energy, such as a mains supply, a photovoltaic power supply and other power supplies, and also can be connected to an external load end to supply power to a load, such as an external load or an energy storage device and other devices requiring electric energy.
Constant temperature heating device 4 is connected to power supply bus 3 and in order to obtain the electric energy through power supply bus 3, and constant temperature heating device 4 can maintain its temperature on a preset temperature value after obtaining the electric energy, and for example the preset temperature value is 21 ℃, and the constant temperature heating device will send out 21 ℃ of temperature. Constant temperature heating device 4 is connected to every battery cell 1 and gives each battery cell 1 with the heat transfer that it sent, in this embodiment constant temperature heating device 4 is the constant temperature heating membrane, the constant temperature heating membrane includes PET heating diaphragm and MCU, and MCU control PET heating diaphragm maintains on a predetermined temperature, the constant temperature heating membrane covers the surface at every battery cell 1 and gives each battery cell 1 with the heat transfer that it sent. In the charging process of the storage battery pack, the consumed electric quantity of each single battery 1 is different, and partial single batteries 1 are fully charged firstly. However, after the full charge of the single cells 1, it is necessary to continue to maintain the charged state to charge the non-fully charged single cells 1. Then, the first fully charged single cell 1 may be overcharged, so that the life of the first fully charged single cell 1 is reduced due to overcharge, and the life of the storage battery pack is shortened due to the influence of the shortened life of the single cell 1.
When the single battery 1 is fully charged, the charging circuit of the single battery 1 is separately disconnected through the charging and discharging control circuit 2, but the discharging circuit of the single battery 1 is reserved. When the power supply bus 3 suddenly loses the electric energy supply of the commercial power supply, the single battery 1 can discharge to the power supply bus 3, so that the constant temperature heating device 4 can continue to obtain the electric energy from the power supply bus 3 to maintain the constant temperature, and on the other hand, the phenomenon of overcharge caused by different electric quantity of the single battery 1 in the storage battery can be avoided by disconnecting the charging circuit of the single battery 1.
After the electric quantity of the single battery 1 is discharged, the discharging circuit of the power supply bus 3 can be disconnected independently through the charging and discharging control circuit 2, the single battery 1 is kept connected to the charging circuit of the power supply bus 3, and the electric energy discharged by other batteries is avoided being excessively discharged or consumed by the single battery 1.
In the battery pack provided in this embodiment 1, after a certain single cell 1 in the battery pack is fully charged, the charging line of the single cell 1 is individually disconnected by the charging and discharging control circuit 2, but the discharging line of the single cell 1 is reserved. The problem of overcharging of the unit cell 1 is avoided.
On the other hand, only close the partial circuit that charges of battery cell 1 through this kind of charge-discharge control circuit 2 of check valve formula, do not influence when power supply bus 3 loses mains power supply's electric energy supply suddenly and give power supply bus 3 by battery cell 1 discharges for constant temperature heating device 4 can continue to obtain the electric energy from power supply bus 3 and maintain the constant temperature, and on the other hand can avoid the overcharge phenomenon because battery cell 1 electric quantity in the storage battery differs and leads to through the charging circuit of disconnection battery cell 1.
Example 2:
fig. 2 is a schematic structural diagram of a charge and discharge control circuit 2 of a battery pack according to an embodiment of the present disclosure. As shown in fig. 2, the battery pack according to embodiment 1 further includes a controller 5, and the charge/discharge control circuit 2 includes: the circuit comprises an inductor L1, a first switch K1, a second switch K2, a first diode D1 and a second diode D2.
The first end of the first switch K1 is connected with the single battery 1, the second end of the first switch K1 is connected with the negative electrode of the second diode D2, the negative electrode of the second diode D2 is connected with the first end of the inductor L1, and the second end of the inductor L1 is connected with the power supply bus 3 to form a charging circuit;
the positive pole of the first diode D1 is connected with the single battery 1, the negative pole of the first diode D1 is connected with the first end of the second switch K2, the second end of the second switch K2 is connected with the first end of the inductor L1, and the second end of the inductor L1 is connected with the power supply bus 3 to form a discharge circuit.
The controller 5 controls the first switch K1 to be closed and the second switch K2 to be opened. At the moment, only the power supply bus 3 reaches the second end of the inductor L1, the first end of the inductor L1 reaches the anode of the second diode D2, the cathode of the second diode D2 reaches the second end of the first switch K1, the charging circuit formed by the first end of the first switch K1 and the single battery 1 is conducted, the single battery 1 can only be charged independently and cannot be discharged, and the single battery is independently charged.
Likewise, the controller 5 controls the first switch K1 to be open and the second switch K2 to be closed. Only single battery 1 has to the positive pole of first diode D1 at this moment, and the negative pole of first diode D1 reaches the first end of second switch K2, and the second end of second switch K2 reaches the first end of inductance L1, and the second end of inductance L1 is led through to the discharge line that power supply bus 3 constitutes, and single battery 1 can only discharge alone and can not charge, has realized discharging alone of battery.
Inductance L1 plays the effect of logical direct current resistance interchange in this embodiment, hinders the weak alternating current of power supply bus and gets into the charging circuit of cell 1, protection cell 1 that can be better, and storage battery's life-span is longer.
In this embodiment, the controller 5 is an MCU, the first switch K1 and the second switch K2 are respectively a first contactor and a second contactor, and the MCU sends a close signal to the first contactor or the second contactor to trigger the first contactor to close or the second contactor to close, so as to implement the operation of closing the first switch K1 and the second switch K2.
Example 3:
fig. 3 is a second schematic diagram of the structure of the charge and discharge control circuit 2 of the battery pack according to the embodiment of the disclosure. As shown in fig. 3, the battery pack according to embodiment 1 further includes a controller 5, and the charge and discharge control circuit 2 includes: the circuit comprises an inductor L1, a first switch K1, a second switch K2, a first diode D1 and a second diode D2.
A first end of the first switch D1 is connected with the single battery 1, a second end of the first switch D1 is connected with an anode of the second diode D2, a cathode of the second diode D2 is connected with a first end of the inductor L1, and a second end of the inductor L1 is connected with the power supply bus 3 to form a discharge circuit;
the negative pole of first diode D1 is connected battery cell 1, and the first end of second switch K2 is connected to the positive pole of first diode D1, and the first end of inductance L1 is connected to the second end of second switch K2, and power supply bus 3 is connected in order to form the charging circuit to the second end of inductance L1.
The controller 5 controls the first switch K1 to be opened and the second switch K2 to be closed. At this time, only the power supply bus 3 is connected to the second end of the inductor, the first end of the inductor is connected to the second end of the second switch K2, the first end of the second switch K2 is connected to the anode of the first diode D1, the cathode of the first diode D1 is connected to a charging circuit formed by the single battery 1, and the single battery 1 can only be charged alone but cannot be discharged.
Similarly, the controller 5 controls the first switch K1 to be closed and the second switch K2 to be opened. At this time, only the single battery 1 is connected to the first end of the first switch K1, the second end of the first switch K1 is connected to the anode of the second diode D2, the cathode of the second diode D2 is connected to the first end of the inductor, and the discharge circuit formed by the second end of the inductor and the power supply bus 3 is conducted, so that the single battery 1 can only discharge alone but cannot be charged.
Inductance L1 plays the effect of logical direct current resistance interchange in this embodiment, hinders the weak alternating current of power supply bus and gets into the charging circuit of cell 1, protection cell 1 that can be better, and storage battery's life-span is longer.
In this embodiment, the controller 5 is an MCU, the first switch K1 and the second switch K2 are respectively a first contactor and a second contactor, and the MCU sends a close signal to the first contactor or the second contactor to trigger the first contactor to close or the second contactor to close, so as to close the first switch K1 and the second switch K2.
Example 4:
fig. 4 is a third schematic structural diagram of a battery pack according to an embodiment of the present disclosure. As shown in fig. 4, the battery pack further includes a power detection device 6, and the power detection device 6 is connected to the single battery 1 to detect the power of the single battery 1 and send the detected power to the controller 5. In the present embodiment, the electric quantity detection device 6 is the electric quantity detection device 6 described in the prior art, such as CN103969595A and CN103176132A, or a device for detecting the current electric quantity of the single battery 1 by a voltage detection method, a current detection method or a voltage-current combination method.
The controller 5 stores a first preset electric quantity and a second preset electric quantity. The first preset electric quantity is set to be 100% of the factory-marked capacity value of the single battery 1 by a worker, and the second preset electric quantity is 10% of the factory-marked capacity value of the single battery 1. The controller 5 continuously compares the preset first preset electric quantity and the second preset electric quantity with the electric quantity of the single battery 1 sent by the electric quantity detection device 6.
When the electric quantity of the single battery 1 reaches a first preset electric quantity, the controller 5 controls the single battery 1 to discharge alone, and when the electric quantity of the single battery 1 reaches a second preset electric quantity, the controller 5 controls the single battery 1 to charge alone.
The numerical values of the first preset electric quantity and the second preset electric quantity are reasonably set by a worker, so that the overcharge or over-discharge of the single battery 1 can be avoided, and the service life of the storage battery pack is prolonged.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The previous description is only for the purpose of describing particular embodiments of the present disclosure, so as to enable those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The storage battery pack is characterized by comprising a plurality of single batteries, a power supply bus and a plurality of charging and discharging control circuits, wherein the power supply bus is used for charging and discharging the single batteries, the charging and discharging control circuits are used for controlling the single batteries to be independently charged or discharged, the single batteries and the charging and discharging control circuits are arranged in a set, and each single battery is connected to the power supply bus through the corresponding charging and discharging control circuit so as to be charged or discharged through the power supply bus.
2. The battery pack according to claim 1, further comprising a constant temperature heating device connected to the cells to heat the cells, the constant temperature heating device being connected to the power bus to obtain power through the power bus.
3. The battery pack according to claim 2, wherein the constant-temperature heating device is a constant-temperature heating film that covers each unit cell to maintain the temperature of each unit cell.
4. The battery pack according to claim 1, wherein the charge and discharge control circuit comprises a charge line for charging only the cells and a discharge line for discharging only the cells.
5. The battery pack of claim 4, further comprising a controller connected to the charge and discharge control circuit to control the charging or discharging circuit of the charge and discharge control circuit to be turned on or off.
6. The battery pack according to claim 5, wherein the charge and discharge control circuit comprises: the circuit comprises an inductor, a first switch, a second switch, a first diode and a second diode;
the first end of the first switch is connected with the single battery, the second end of the first switch is connected with the cathode of the second diode, the cathode of the second diode is connected with the first end of the inductor, and the second end of the inductor is connected with the power supply bus to form a charging circuit;
the positive pole of the first diode is connected with the single battery, the negative pole of the first diode is connected with the first end of the second switch, the second end of the second switch is connected with the first end of the inductor, and the second end of the inductor is connected with the power supply bus to form a discharge circuit.
7. The battery pack according to claim 6, wherein the controller controls the first switch to be closed and the second switch to be opened so as to realize independent charging of the single battery cells;
the controller controls the first switch to be switched off and the second switch to be switched on so as to realize independent discharge of the single battery.
8. The battery pack according to claim 5, wherein the charge and discharge control circuit comprises: the circuit comprises an inductor, a first switch, a second switch, a first diode and a second diode;
the first end of the first switch is connected with the single battery, the second end of the first switch is connected with the anode of the second diode, the cathode of the second diode is connected with the first end of the inductor, and the second end of the inductor is connected with the power supply bus to form a discharge circuit;
the negative pole of first diode is connected the battery cell, and the first end of second switch is connected to the positive pole of first diode, and the first end of inductance is connected to the second end of second switch, and the power supply generating line is in order to form the charging circuit is connected to the second end of inductance.
9. The battery pack according to claim 8, wherein the controller controls the first switch to be closed and the second switch to be opened so as to realize independent discharge of the single battery cells;
the controller controls the first switch to be switched off and the second switch to be switched on so as to realize independent charging of the single batteries.
10. The battery pack according to claim 7 or 9, wherein the battery pack further comprises a power detection device, the power detection device is connected to the single battery to detect the power of the single battery and send the detected power to the controller, the controller stores a first preset power and a second preset power, the controller controls the single battery to independently discharge when the power of the single battery reaches the first preset power, and the controller controls the single battery to independently charge when the power of the single battery reaches the second preset power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123431842.7U CN217590289U (en) | 2021-12-30 | 2021-12-30 | Accumulator battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123431842.7U CN217590289U (en) | 2021-12-30 | 2021-12-30 | Accumulator battery |
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| Publication Number | Publication Date |
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| CN217590289U true CN217590289U (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123431842.7U Active CN217590289U (en) | 2021-12-30 | 2021-12-30 | Accumulator battery |
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| CN (1) | CN217590289U (en) |
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2021
- 2021-12-30 CN CN202123431842.7U patent/CN217590289U/en active Active
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