CN210692689U - Hybrid storage battery system - Google Patents
Hybrid storage battery system Download PDFInfo
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- CN210692689U CN210692689U CN201921178965.4U CN201921178965U CN210692689U CN 210692689 U CN210692689 U CN 210692689U CN 201921178965 U CN201921178965 U CN 201921178965U CN 210692689 U CN210692689 U CN 210692689U
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- battery
- lithium ion
- ion battery
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- nickel
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a hybrid battery system, it includes lead acid battery group or nickel-hydrogen battery group, lithium ion battery group, partial pressure components and parts and battery balancer circuit, lead acid battery group nickel-hydrogen battery group is by a plurality of lead acid battery or nickel-hydrogen battery series connection, lithium ion battery group is by a plurality of lithium ion battery series connection, lead acid battery group or nickel-hydrogen battery group and lithium ion battery group parallel connection, and lead acid battery or nickel-hydrogen battery and lithium ion battery alternately put and form crisscross distribution structure, partial pressure components and parts are established on the circuit after lead acid battery group or nickel-hydrogen battery group and lithium ion battery group are parallelly connected, battery balancer circuit and lithium ion battery group parallel connection. The utility model provides a hybrid battery system by different grade type battery combination effectively combines lithium ion battery and lead acid battery advantage separately, realizes the complementary intelligent power supply of advantage of different grade type battery.
Description
Technical Field
The utility model relates to a battery system field especially relates to a mixed type battery system.
Background
The traditional fuel oil automobile uses fossil fuel as main driving energy, along with the sharp increase of the number of automobiles, the environment is seriously polluted due to the large amount of exhaust gas emission, the global climate is warmed, and moreover, global fossil energy is gradually exhausted, so that the global environment faces a severe energy crisis. On the contrary, a pure electric vehicle which does not discharge exhaust gas or a hybrid electric vehicle which discharges less exhaust gas is widely used, and has important significance for solving energy crisis, improving environment and the like.
The electric automobile is powered by the storage battery, and the storage battery cannot be disconnected naturally. However, the conventional secondary battery has serious problems such as too heavy weight or too high cost. Current battery systems are primarily aqueous based batteries like lead acid batteries and organic solution based batteries like lithium ion batteries. Among them, lead-acid batteries have the advantage of low price, but they have many disadvantages such as heavy weight, large volume, short cycle life, low output voltage, and low energy density. Lithium ion batteries with high energy density and light weight have the disadvantages of high price, low resistance to large current, poor tolerance to overcharge and overdischarge, poor low-temperature performance and the like. And a flammable electrolyte is used, which may cause a dangerous accident such as combustion or explosion due to heat generation if overcharged or overdischarged, so that it is generally required to separately provide a protection circuit and a protection switch to prevent overcharge or overdischarge thereof, which further increases the cost of the secondary battery. Therefore, the problem of expensive cost of lithium ion batteries limits their large-scale application in the field of electric vehicles.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hybrid battery system, it has solved traditional battery and has had weight too heavy or serious problem such as cost too high, effectively combines the respective advantage of lithium ion battery and lead acid battery, provides the hybrid battery system that has good characteristics such as energy density height, longe-lived, low temperature characteristic are good, the security is high, realizes the complementary intelligent power supply of advantage of different grade type battery.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a hybrid storage battery system, its includes lead acid battery group or nickel-hydrogen battery group, lithium ion battery group, partial pressure components and battery balancer circuit, lead acid battery group or nickel-hydrogen battery group are by a plurality of lead acid battery or nickel-hydrogen battery series connection, lithium ion battery group is by a plurality of lithium ion battery series connection, lead acid battery group or nickel-hydrogen battery group and lithium ion battery group parallel connection, and lead acid battery or nickel-hydrogen battery and lithium ion battery are alternately put and are formed crisscross distribution structure, partial pressure components establish on the parallelly connected circuit of lead acid battery group or nickel-hydrogen battery group and lithium ion battery group, battery balancer circuit and lithium ion battery group parallel connection.
Further, the working voltage of the lead-acid battery pack or the nickel-metal hydride battery pack is 2.0V.
Further, the lithium ion battery is one of a lithium iron phosphate lithium ion battery or a ternary system lithium ion battery.
Further, the working voltage of the lithium iron phosphate lithium ion battery is 3.2V.
Further, the operating voltage of the ternary system lithium ion battery is 3.7V.
Further, the overcharge voltage of the lead-acid battery is higher than that of the lithium ion battery.
Further, the final charging voltage of the lead-acid battery is lower than that of the lithium ion battery.
Further, the voltage dividing component is a variable resistor.
The utility model provides a hybrid battery system by different grade type battery combination effectively combines lithium ion battery and lead acid battery advantage separately, realizes the complementary intelligent power supply of advantage of different grade type battery. It has the following advantages:
(1) the lithium ion battery and the lead-acid battery both have potential overcharge voltage higher than the final charge voltage of the lead-acid battery, so that the continuous increase of the charge voltage can be effectively inhibited; the final charging voltage of the lead-acid battery is lower than that of the lithium ion battery, so that the lithium ion battery can be effectively protected without providing an expensive overcharge protection device, accidents such as explosion, fire and the like caused by overcharge are avoided, the configuration of the whole storage battery system is safe, the configuration of the whole storage battery system can be simplified, and the overall cost of the storage battery system is further reduced.
(2) Long cycle life, up to 1500 times;
(3) the lead-acid battery mainly replaces a lithium ion battery with poor performance at a cold temperature to discharge at a low temperature, and the lithium ion battery is arranged between the two lead-acid batteries, so that the internal temperature of the lithium ion battery is increased along with the discharge, the lithium ion battery can also work normally, and great contribution is provided. Therefore, the hybrid battery system has excellent low-temperature characteristics and can provide a capacity of 70% or more (compared with the capacity at 25 ℃) even at a low temperature of-30 ℃.
(4) Since the hybrid battery system is based on a lithium ion battery having a high energy density, the hybrid battery system has a high energy density comparable to that of a lithium ion battery system.
(5) According to the requirements, different types of battery packs are used for intelligent power supply, the instantaneous and long-term power requirements of the automobile are met in an optimal mode, if stable electric energy supply is needed, a lithium ion battery is selected for power supply, and if high-power supply is needed, a lead-acid battery is selected for power supply.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic structural diagram of a hybrid battery system according to the present invention;
fig. 2 is a schematic structural diagram of a 48V hybrid battery system according to the present invention;
fig. 3 is a low-temperature characteristic diagram of a hybrid battery system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a hybrid battery system includes a lead-acid battery pack 11, a lithium-ion battery pack 12, voltage dividing devices 13-1, 13-2, and a cell balancer circuit 14; the lead-acid battery pack 11 and the lithium ion battery pack 12 are connected in parallel; the lithium ion batteries 12-1 of the lithium ion battery pack 12 are all arranged in the middle of the lead acid batteries 11-1 of the lead acid battery pack 11 and form a staggered distribution structure; the voltage division components 13-1 and 13-2 are respectively connected with the lead-acid battery pack 11 or the lithium ion battery pack 12 in series, and the voltage is adjusted to enable the output voltages of the lithium ion battery pack and the lead-acid battery pack to be consistent; the battery balancer circuit 14 is connected in parallel with the lead-acid battery pack 11 and the lithium ion battery pack 12, so that the charge states of the plurality of batteries reach the same level.
Wherein the lead-acid battery pack 11 is connected in series by a plurality of lead-acid batteries 11-1 to provide a predetermined voltage; the lead-acid battery 11-1 is a conventional lead-acid battery; the working voltage of the lead-acid battery 12-1 is 2.0V; the lead-acid battery can be replaced by a nickel-hydrogen battery; the lithium ion battery pack 12 is formed by connecting a plurality of lithium ion batteries 12-1 in series to provide a predetermined voltage; the lithium ion battery 12-1 is one of a lithium iron phosphate lithium ion battery or a ternary system lithium ion battery; the working voltage of the lithium iron phosphate lithium ion battery is 3.2V; the working voltage of the ternary system lithium ion battery is 3.7V; the average discharge voltage of the lead-acid battery 11-1 is similar to that of the lithium ion battery 12-1; the overcharge voltage of the lead-acid battery 11-1 is higher than that of the lithium ion battery 12-1; the final charging voltage of the lead-acid battery 11-1 is lower than that of the lithium ion battery 12-1; the voltage division components 13-1 and 13-2 are variable resistors;
examples
As shown in fig. 2, the 48V hybrid battery system provided by the present invention includes a lead-acid battery 11, a lithium ion battery 12, voltage dividing components 13-1 and 13-2, and a battery balancer circuit 14; the lead-acid battery pack 11 and the lithium ion battery pack 12 are connected in parallel; the lead-acid battery pack 11 is formed by connecting 24 lead-acid batteries 11-1 in series, the lithium ion battery pack 12 is formed by connecting 13 ternary system lithium ion batteries 12-1 in series, and the lithium ion batteries 12-1 are all arranged in the middle of the lead-acid batteries 11-1 and mutually form a staggered distribution structure; the voltage division component 13-1 is connected with the lead-acid battery pack 11 in series, the voltage division component 13-2 is connected with the lithium ion battery pack 12 in series, and the voltage is adjusted to enable the output voltages of the lithium ion battery pack and the lead-acid battery pack to be consistent; the battery balancer circuit 14 is connected in parallel with the lead-acid battery pack 11 and the lithium-ion battery pack 12 so that the states of charge of the plurality of batteries reach the same level.
The lead-acid battery may be replaced with a nickel-metal hydride battery in this embodiment.
The utility model provides a hybrid battery system by different grade type battery combination effectively combines lithium ion battery and lead acid battery advantage separately, realizes the complementary intelligent power supply of advantage of different grade type battery. Because the lithium ion battery and the lead-acid battery both have potential overcharge voltage higher than the final charge voltage of the lead-acid battery, the continuous increase of the charge voltage can be effectively inhibited; the final charging voltage of the lead-acid battery is lower than that of the lithium ion battery, so that the lithium ion battery can be effectively protected without providing an expensive overcharge protection device, accidents such as explosion, fire and the like caused by overcharge are avoided, the configuration of the whole storage battery system is safe, the configuration of the whole storage battery system can be simplified, and the overall cost of the storage battery system is further reduced. Has long cycle life up to 1500 times and high energy density. At low temperature, the lead-acid battery mainly replaces a lithium ion battery with poor performance at a cooler temperature to discharge, because the lithium ion battery is arranged between the two lead-acid batteries, the internal temperature of the lithium ion battery is increased along with the discharge of the lead-acid battery, and the lithium ion battery can also work normally, thereby providing great contribution. As shown in fig. 3, the hybrid battery system has excellent low-temperature characteristics and can provide a capacity of 70% or more (compared to the capacity at 25 ℃) even at a low temperature of-30 ℃. In addition, the hybrid battery system can be intelligently powered by different types of battery packs according to requirements, instantaneous and long-term power requirements of the automobile can be met in an optimal mode, if stable electric energy is needed, a lithium ion battery is selected for power supply, and if high-power supply is needed, a lead-acid battery is selected for power supply.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A hybrid battery system, characterized in that: it includes lead-acid battery group or nickel-hydrogen battery group, lithium ion battery group, partial pressure components and parts and battery balancer circuit, lead-acid battery group or nickel-hydrogen battery series connection by a plurality of lead-acid battery or nickel-hydrogen battery, lithium ion battery group is by a plurality of lithium ion battery series connection, lead-acid battery group or nickel-hydrogen battery group and lithium ion battery group parallel connection, and lead-acid battery or nickel-hydrogen battery and lithium ion battery are alternately put and form crisscross distribution structure, partial pressure components establish on the parallelly connected circuit of back of lead-acid battery group or nickel-hydrogen battery group and lithium ion battery group, battery balancer circuit and lithium ion battery group parallel connection.
2. The hybrid battery system of claim 1, wherein: the working voltage of the lead-acid battery pack or the nickel-metal hydride battery pack is 2.0V.
3. The hybrid battery system of claim 1, wherein: the lithium ion battery is one of a lithium iron phosphate lithium ion battery or a ternary system lithium ion battery.
4. The hybrid battery system of claim 3, wherein: the working voltage of the lithium iron phosphate lithium ion battery is 3.2V.
5. The hybrid battery system of claim 3, wherein: the working voltage of the ternary system lithium ion battery is 3.7V.
6. The hybrid battery system of claim 1, wherein: the overcharge voltage of the lead-acid battery is higher than that of the lithium ion battery.
7. The hybrid battery system of claim 1, wherein: the final charging voltage of the lead-acid battery is lower than that of the lithium ion battery.
8. The hybrid battery system of claim 1, wherein: the voltage division component is a variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921178965.4U CN210692689U (en) | 2019-07-25 | 2019-07-25 | Hybrid storage battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921178965.4U CN210692689U (en) | 2019-07-25 | 2019-07-25 | Hybrid storage battery system |
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| CN210692689U true CN210692689U (en) | 2020-06-05 |
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| CN201921178965.4U Active CN210692689U (en) | 2019-07-25 | 2019-07-25 | Hybrid storage battery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114465304A (en) * | 2022-01-12 | 2022-05-10 | 浙江霖润新能源科技有限公司 | Vehicle-mounted hybrid power supply system |
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- 2019-07-25 CN CN201921178965.4U patent/CN210692689U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114465304A (en) * | 2022-01-12 | 2022-05-10 | 浙江霖润新能源科技有限公司 | Vehicle-mounted hybrid power supply system |
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