CN217848994U - Hot plug type battery equalization system - Google Patents
Hot plug type battery equalization system Download PDFInfo
- Publication number
- CN217848994U CN217848994U CN202221452005.4U CN202221452005U CN217848994U CN 217848994 U CN217848994 U CN 217848994U CN 202221452005 U CN202221452005 U CN 202221452005U CN 217848994 U CN217848994 U CN 217848994U
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- module
- battery
- equalization
- temperature acquisition
- hot plug
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- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 206010068065 Burning mouth syndrome Diseases 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a hot plug formula battery equalizing system, including battery module, electric core voltage temperature acquisition module and balanced module, the battery module comprises a plurality of batteries of establishing ties in proper order, and the operation data of every battery is connected and is gathered respectively to electric core voltage temperature acquisition module, and balanced module is including the parallel plug of duplex pin, electric core selection circuit, benefit discharge circuit and current detection module, power and control module, hot plug control module. The utility model discloses a hot plug formula battery equalizing system has provided the balanced mode of taking external form, separates sampling part and balanced part. The acquisition body is connected with the battery cell interface part of the balancing module in a double-needle parallel contact mode. And online live hot plug is supported, and plugging equalization is performed on the modules needing equalization processing. The equalization module can perform power supplement or discharge operation on the battery cell. The calculation and control of the balancing module come from the acquisition module body.
Description
Technical Field
The utility model belongs to the technical field of BMS battery management system, concretely relates to hot plug formula battery equalization system.
Background
With the large-scale application of energy storage systems, lithium batteries are also increasingly used. Due to the characteristics of the lithium battery, the charging and discharging times of the lithium battery are increased, the difference of the battery core is gradually accumulated, the inconsistency of the battery core is gradually increased, the charging and discharging attenuation rate of the pile is continuously increased, and the expected charging and discharging electric quantity can not be achieved more and more. In general, the inconsistency of the battery can be corrected in a balanced way to achieve the maximization of the charge and discharge amount of the electric pile.
The balancing method comprises passive balancing and active balancing, and BMSs with balancing are integrated in the battery acquisition module in the market. Because the circuit of the balancing part is complex and passes by larger current, the fault rate of the whole circuit is higher than that of a pure acquisition module, and particularly, no action of the circuit can occur during fault, so that the phenomena of continuous charge and discharge and even short circuit of a battery cell can be caused; secondly, a large number of power switching devices are used in the equalization circuit, so that the cost of the equalization part circuit is relatively high, and a set of equalization circuit is added in each acquisition module, so that the cost of the whole BMS system is greatly increased; in addition, in practical application in the energy storage system, not all the battery cells need to be balanced, and the battery cell modules needing to be balanced generally only account for about 10%.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a hot plug formula battery equalizing system, includes battery module, electric core voltage temperature acquisition module and balanced module, and the battery module comprises a plurality of batteries of establishing ties in proper order, electric core voltage temperature acquisition module connects the battery and gathers the operational data of every battery respectively, balanced module is including two-pin parallel plug, electric core selection circuit, benefit discharge circuit and current detection module, power and control module, hot plug control module, electric core voltage temperature acquisition module is connected respectively to two-pin parallel plug and hot plug control module, two-pin parallel plug, benefit discharge circuit and current detection module, power and control module connect electric core selection circuit respectively, benefit discharge circuit and current detection module connect power and control module, power and control module connect hot plug control module.
The battery cell voltage and temperature acquisition module specifically comprises a main processor, a balance interface, a battery acquisition input, a DFE conversion module, a temperature analog electronic switch and a plurality of temperature acquisition circuits, wherein the temperature acquisition circuits correspond to the batteries one to one and are respectively connected with the corresponding batteries, the temperature acquisition circuits are connected with the temperature analog electronic switch, and the temperature analog electronic switch, the balance interface and the DFE conversion module are respectively connected with the main processor.
The double-pin parallel plug is used for connecting a battery interface part between the cell voltage temperature acquisition module and the equalization module, and after the equalization module is started, the connection part can pass 1-2 amperes of current, so that the contact reliability can be greatly improved by utilizing a double-pin parallel connection mode.
The effect of hot plug control is that it connects not whole circuit connection but only lets the plug connect when electric core voltage temperature acquisition module pegs graft with the equalizer module to ensure when electric core voltage temperature acquisition module, and the connection of circuit is gone on by electric core voltage temperature acquisition module, just can send control signal after electric core voltage temperature acquisition module detects equalizer module and has inserted electric core voltage temperature acquisition module with whole circuit entering connected state.
The cell selection circuit is used for selecting an equalization channel to a cell loop needing equalization.
The power supply discharge circuit and the current detection module mainly generate power supply or discharge current and detect and feed back the corresponding current.
When the cell voltage and temperature acquisition module sends a signal for connecting the whole circuit, the power supply of the equalization module is connected, then the corresponding control circuit acts, and the control part controls the cell selection circuit, the power supply discharge circuit and the current detection module.
Preferably, in the above technical solution, the cell voltage and temperature acquisition module further includes a communication unit. The cell voltage and temperature acquisition module carries out upper layer communication through the communication unit.
The beneficial effects of the utility model are that: the utility model discloses a hot plug formula battery equalizing system has provided the balanced mode of taking external form, separates sampling part and balanced part. The acquisition body is connected with the battery cell interface part of the balancing module in a double-needle parallel contact mode. And online live hot plug is supported, and plugging equalization is performed on the modules needing equalization processing. The equalization module can perform power supplement or discharge operation on the battery cell. The calculation and control of the balancing module come from the acquisition module body.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the operation of the present invention;
fig. 3 is a schematic structural diagram of a cell voltage and temperature acquisition module;
fig. 4 is a circuit schematic of a cell selection circuit;
FIG. 5 is a schematic circuit diagram of the discharge compensation circuit and the current detection module;
FIG. 6 is a circuit diagram of the power and control module.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-2, a hot plug type battery equalization system includes a battery module, a cell voltage and temperature acquisition module, and an equalization module, where the battery module is composed of a plurality of batteries connected in series in sequence, the cell voltage and temperature acquisition module is connected to the batteries and respectively acquires operation data of each battery, the equalization module includes a two-pin parallel plug, a cell selection circuit, a power supply discharge circuit and current detection module, a power supply and control module, and a hot plug control module, the two-pin parallel plug and the hot plug control module are respectively connected to the cell voltage and temperature acquisition module, the two-pin parallel plug, the power supply discharge circuit and current detection module, the power supply and control module are respectively connected to the cell selection circuit, the power supply discharge circuit and current detection module are connected to the power supply and control module, and the hot plug power supply and control module are connected to the control module.
The cell voltage and temperature acquisition module specifically comprises a main processor, a balance interface, a battery acquisition input, a DFE conversion module, a temperature analog electronic switch and a plurality of temperature acquisition circuits, as shown in fig. 3. The temperature acquisition circuits correspond to the batteries one to one and are respectively connected with the corresponding batteries, the temperature acquisition circuits are connected with the temperature analog electronic switches, and the temperature analog electronic switches, the equalization interface and the DFE conversion module are respectively connected with the main processor. The cell voltage temperature acquisition module further comprises a communication unit. The cell voltage and temperature acquisition module carries out upper-layer communication through the communication unit.
The double-pin parallel plug is used for connecting a battery interface part between the cell voltage and temperature acquisition module and the equalization module, and after the equalization module is started, the current of 1 to 2 amperes can pass through the connection part, so that the contact reliability can be greatly improved by using a double-pin parallel connection mode.
The effect of hot plug control is that it connects not whole circuit connection but only lets the plug connect when electric core voltage temperature acquisition module pegs graft with the equalizer module to ensure when electric core voltage temperature acquisition module, and the connection of circuit is gone on by electric core voltage temperature acquisition module, just can send control signal after electric core voltage temperature acquisition module detects equalizer module and has inserted electric core voltage temperature acquisition module with whole circuit entering connected state.
Further, as shown in fig. 4, the cell selection circuit is used to select an equalization channel to a cell loop requiring equalization.
Further, the power supply discharge circuit and the current detection module are shown in fig. 5. It mainly generates the electricity-compensating or discharging current and carries on the detecting feedback to the corresponding current.
Further, the power supply and control module is shown in fig. 6. When the cell voltage and temperature acquisition module sends a signal for connecting the whole circuit, the power supply of the equalization module can be connected, then the corresponding control circuit can act, and the control part controls the cell selection circuit, the power supply discharge circuit and the current detection module.
It is worth mentioning that the technical features such as the double-pin parallel plug that the patent application relates to should be regarded as prior art, and the concrete structure, the theory of operation and the control mode that may involve, the spatial arrangement mode of these technical features adopt the conventional selection in this field can, should not be regarded as the invention point of the utility model discloses a place, the utility model discloses do not further specifically expand the detailed description.
Having described in detail preferred embodiments of the present invention, it is to be understood that modifications and variations can be made by persons skilled in the art without inventive faculty, and therefore all technical solutions which can be obtained by a person skilled in the art based on the concepts of the present invention through logic analysis, reasoning or limited experimentation will fall within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides a hot plug formula battery equalizing system, its characterized in that, including battery module, electric core voltage temperature acquisition module and balanced module, the battery module comprises a plurality of batteries of establishing ties in proper order, electric core voltage temperature acquisition module connects the battery and gathers the operational data of every battery respectively, balanced module is including two-pin parallel plug, electric core selection circuit, benefit discharge circuit and current detection module, power and control module, hot plug control module, electric core selection circuit is connected respectively to two-pin parallel plug and hot plug control module, two-pin parallel plug, benefit discharge circuit and current detection module, power and control module connect respectively, benefit discharge circuit and current detection module connect power and control module, power and control module connect hot plug control module.
2. The system for hot-swap battery equalization according to claim 1, wherein the cell voltage temperature acquisition module comprises a main processor, an equalization interface, a battery acquisition input, a DFE conversion module, a temperature analog electronic switch, and a plurality of temperature acquisition circuits, the temperature acquisition circuits are in one-to-one correspondence with the batteries and are respectively connected to the corresponding batteries, the temperature acquisition circuits are connected to the temperature analog electronic switch, and the temperature analog electronic switch, the equalization interface, and the DFE conversion module are respectively connected to the main processor.
3. The system for hot-swap battery equalization according to claim 2, wherein the cell voltage temperature acquisition module further comprises a communication unit.
4. The system for hot-swap battery equalization according to claim 1, wherein the two-pin parallel plug is configured to connect to the battery interface between the cell voltage temperature acquisition module and the equalization module.
5. The system for hot-plug battery equalization of claim 1, wherein the cell selection circuit is configured to select an equalization channel to a cell loop requiring equalization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221452005.4U CN217848994U (en) | 2022-06-11 | 2022-06-11 | Hot plug type battery equalization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221452005.4U CN217848994U (en) | 2022-06-11 | 2022-06-11 | Hot plug type battery equalization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217848994U true CN217848994U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221452005.4U Expired - Fee Related CN217848994U (en) | 2022-06-11 | 2022-06-11 | Hot plug type battery equalization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217848994U (en) |
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2022
- 2022-06-11 CN CN202221452005.4U patent/CN217848994U/en not_active Expired - Fee Related
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| 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: 20221118 |