CN115377562A - Heat management framework and control method of modular battery replacement vehicle - Google Patents
Heat management framework and control method of modular battery replacement vehicle Download PDFInfo
- Publication number
- CN115377562A CN115377562A CN202211123325.XA CN202211123325A CN115377562A CN 115377562 A CN115377562 A CN 115377562A CN 202211123325 A CN202211123325 A CN 202211123325A CN 115377562 A CN115377562 A CN 115377562A
- Authority
- CN
- China
- Prior art keywords
- battery pack
- branch
- temperature sensor
- battery
- temperature
- 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.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a thermal management framework and a control method of a modularized battery replacement vehicle type, wherein the thermal management framework comprises a battery pack 1 and a battery pack 2; the battery pack 1 and the battery pack 2 are connected in parallel, a first branch where the battery pack 1 is located is provided with a first temperature sensor, and the temperature acquired by the first temperature sensor in real time is T1; a second temperature sensor is arranged on a second branch where the battery pack 2 is located, and the temperature acquired by the second temperature sensor in real time is T2; a third temperature sensor is arranged on a main loop of the battery pack 1 and the battery pack 2, the temperature acquired by the third temperature sensor in real time is T3, and the first branch, the second branch and the main loop are connected through a three-way proportional valve; and adjusting the opening of the three-way proportional valve in real time according to the heat load of the batteries of different branches to meet the heat management requirements of different branch differences.
Description
Technical Field
The invention relates to the field of automobile thermal management, in particular to a thermal management framework and a control method of a modular battery replacement vehicle.
Background
The electric vehicle battery replacement mode is to store, charge and distribute a large number of batteries in a centralized manner through a centralized charging station. Compared with the traditional mode, the battery replacement mode has many advantages: the vehicle-electricity separation reduces the first purchase cost, realizes quick change and slow charge, prolongs the service life of the battery, and solves the problem of quick energy supplement due to overlong charging time. Based on the vigorous development of a plurality of dominant battery replacement markets for replacing and supplementing energy, more and more battery manufacturers put forward battery replacement schemes. The capacity of battery replacement is generally not too large, generally 40-60 kWh is taken as the main capacity, and a plurality of power batteries are required in part of vehicle types, particularly in the field of commercial vehicles due to mileage and power,
in conventional thermal management architectures, which are generally loops as shown in fig. 1 and 2, the cells are simply connected in series or in parallel. The temperature uniformity of the series-parallel connection is poor, and the temperature of the battery of the pack 1 is too cold or too hot after the battery circulating water path is controlled according to the temperature of the water outlet of the pack 2 by the framework shown in the figure; the battery pack temperature control device is connected in parallel with a water return temperature control battery circulation water path, and the requirements of different branches cannot be managed according to actual working condition differences due to the temperature difference of the battery pack caused by the arrangement of the battery pack and the output power of the whole vehicle or the battery replacement.
In addition, a single battery pack is generally arranged on the current electric automobile, a heat management system only exchanges heat with the battery pack, when two or more groups of battery packs are arranged on the electric automobile, efficient heat management control cannot be achieved frequently, particularly after the battery packs in the electric automobile are exchanged, the battery packs after being replaced and the battery packs not being replaced on the electric automobile have large temperature difference, if a circulating water path with the same flow rate is provided for each battery pack, the heat management efficiency is too low frequently, the battery packs with higher/lower temperature cannot obtain more cooling/heating flow rates, and ideal temperature of the multiple groups of battery packs in the electric automobile cannot be achieved rapidly and efficiently.
Disclosure of Invention
Based on the problems, the invention provides a thermal management framework and a control method of a modular battery replacement vehicle type, which are used for overcoming the technical problem that in the prior art, the flow of different branches cannot be managed according to the difference of actual working conditions due to the difference of the temperatures of a plurality of groups of battery packs on an electric vehicle.
In order to achieve the purpose, the technical scheme of the invention is a thermal management framework of a modularized battery replacement vehicle type, the thermal management framework is suitable for an electric vehicle with two or more groups of battery packs, after the electric vehicle completes partial battery pack replacement, as the electric quantity of the battery pack after the battery replacement is different from the electric quantity of the battery pack which is not replaced in the electric vehicle, a great difference of battery temperature is inevitably generated in the using process, therefore, the thermal management framework mainly aims at temperature control systems adopted by the battery packs with different temperatures in the electric vehicle, and particularly, when the battery packs in the electric vehicle are two groups, the thermal management framework comprises a battery pack 1 and a battery pack 2; the battery pack 1 and the battery pack 2 are connected in parallel; a first temperature sensor is arranged on a first branch where a battery pack 1 is located, and the temperature acquired by the first temperature sensor in real time is T1; a second temperature sensor is arranged on a second branch where the battery pack 2 is located, and the temperature acquired by the second temperature sensor in real time is T2; a third temperature sensor is arranged on a main loop of the battery pack 1 and the battery pack 2, the temperature acquired by the third temperature sensor in real time is T3, and the first branch, the second branch and the main loop are connected through a three-way proportional valve; and adjusting the opening of the three-way proportional valve in real time according to the temperatures T1 and T2 acquired by the first temperature sensor and the second temperature sensor in real time, so that the battery pack with higher temperature can obtain larger flow.
According to the control method of the thermal management architecture of the modularized battery replacement vehicle, the three-way proportional valve adjusts the opening degree through the duty ratio n, wherein: when the duty ratio n is 0, the flow of the first branch is 0, and the flow of the second branch is equal to the total loop flow; when the duty ratio n is 1, the flow of the first branch is equal to the total loop flow, the flow of the second branch is 0, and the rest duty ratios are adjusted linearly.
When the BMS requests a heating mode, the linear adjustment is adjusted as follows:
when T1 is more than or equal to T2 and | T1| > or more than | T2|, n = | T2 |/(| T1| + | T2 |);
when T1 is more than or equal to T2 and | T1| < | T2|, n = | T1 |/(| T1| + | T2 |);
when T1 is less than T2 and | T1| ≧ T2|, n = | T1 |/(| T1| + | T2 |);
when T1< T2 and | T1| < | T2|, n = | T2 |/(| T1| + | T2 |).
When the BMS requests the cooling mode, the linear adjustment is adjusted as follows: n = | T1 |/(| T1| + | T2 |).
When the BMS requests the temperature equalization mode, the duty ratio n =50%.
Compared with the prior art, the invention has the beneficial effects that:
1. the battery replacement vehicle type aimed at by the heat management framework and the method is provided with two or more groups of battery packs, after part of batteries of the electric vehicle are replaced, the temperature of the battery which is not replaced and the temperature of the battery which is replaced are inevitably different due to different electric quantities of the batteries, and the heat management efficiency of the batteries can be effectively improved by adjusting the flow of each battery heat management system;
2. according to the invention, the real-time temperature of each branch is measured by arranging the temperature sensors on the first branch and the second branch respectively, so that the requirement difference of each branch is judged, the opening of the three-way proportional valve is controlled according to different BMS (battery management system) request modes, the thermal management requirements of different branch differences are met, the situation that an independent control valve is arranged on each branch to control the fluid of each branch is avoided, the flow control efficiency is greatly improved, and the equipment cost is greatly saved;
3. the flow control of each branch is adjusted according to the temperature monitored by the temperature sensor on the branch, the adjustment mode does not need to adjust and control the flow of each branch through an accurate algorithm, and on the contrary, the flow can be controlled through a simpler linear adjustment formula, so that the temperature adjustment of different battery packs can be realized simply and efficiently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a thermal management architecture of a serial modular power conversion scheme in the prior art;
FIG. 2 is a thermal management architecture of a parallel modular power swapping scheme in the prior art;
FIG. 3 is a modular power conversion scheme thermal management architecture of the present invention;
fig. 4 is a flowchart of a control method of the thermal management architecture of the modular power swapping scheme of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The heat management framework is suitable for the electric vehicle with two or more groups of battery packs, when the electric vehicle finishes partial battery pack replacement, the battery packs after the battery replacement are different from the battery packs which are not replaced in the electric vehicle in electric power, and the battery temperature is different in the using process, so the heat management framework mainly aims at a temperature control system adopted by the battery packs with different temperatures in the electric vehicle, see the attached figure 3, and comprises the battery pack 1 and the battery pack 2; the battery pack 1 and the battery pack 2 are connected in parallel; a first temperature sensor is arranged on a first branch where a battery pack 1 is located, and the temperature acquired by the first temperature sensor in real time is T1; a second temperature sensor is arranged on a second branch where the battery pack 2 is located, and the temperature acquired by the second temperature sensor in real time is T2; a third temperature sensor is arranged on a main loop of the battery pack 1 and the battery pack 2, the temperature acquired by the third temperature sensor in real time is T3, and the first branch, the second branch and the main loop are connected through a three-way proportional valve; and adjusting the opening of the three-way proportional valve in real time according to the temperatures T1 and T2 acquired by the first temperature sensor and the second temperature sensor in real time.
Referring to fig. 4, in the control method of the thermal management architecture of the modular battery replacement vehicle, the three-way proportional valve adjusts the opening degree through a duty ratio n, wherein: when the duty ratio n is 0, the flow of the first branch is 0, and the flow of the second branch is equal to the total loop flow; when the duty ratio n is 1, the flow of the first branch is equal to the total loop flow, the flow of the second branch is 0, and the rest duty ratios are adjusted linearly.
When the BMS requests a heating mode, the linear adjustment is adjusted as follows:
when T1 is more than or equal to T2 and | T1| > is more than or equal to | T2|, n = | T2 |/(| T1| + | T2 |);
when T1 is more than or equal to T2 and | T1| < | T2|, n = | T1 |/(| T1| + | T2 |);
when T1 is less than T2 and | T1| ≧ T2|, n = | T1 |/(| T1| + | T2 |);
when T1< T2 and | T1| < | T2|, n = | T2 |/(| T1| + | T2 |).
When the BMS requests the cooling mode, the linear adjustment is adjusted as follows: n = | T1 |/(| T1| + | T2 |).
When the BMS requests the temperature equalization mode, the duty ratio n =50%.
The foregoing is considered as illustrative of the preferred embodiments of the present invention only, and it is to be understood that the preferred embodiments of the invention disclosed herein are illustrative of the principles of the embodiments of the present invention and are not to be taken as limiting the invention. Under the inventive concept of the present invention, the equivalent structural changes made by the contents of the present specification and the attached drawings, or the direct/indirect application to other related technical fields, are all included in the scope of the present invention.
Claims (6)
1. A thermal management architecture of a modularized battery replacement vehicle comprises a battery pack 1 and a battery pack 2; the battery pack 1 and the battery pack 2 are connected in parallel; the method is characterized in that a first temperature sensor is arranged on a first branch where a battery pack 1 is located, and the temperature acquired by the first temperature sensor in real time is T1; a second temperature sensor is arranged on a second branch where the battery pack 2 is located, and the temperature acquired by the second temperature sensor in real time is T2; a third temperature sensor is arranged on a main loop of the battery pack 1 and the battery pack 2, the temperature acquired by the third temperature sensor in real time is T3, and the first branch, the second branch and the main loop are connected through a three-way proportional valve; and adjusting the opening of the three-way proportional valve in real time according to the temperatures T1 and T2 acquired by the first temperature sensor and the second temperature sensor in real time.
2. The modular battery replacement type heat management framework of claim 1, wherein the heat management framework is suitable for an electric vehicle with two sets of battery packs, when the electric vehicle completes replacement of a part of battery packs, the temperature difference between the battery packs after replacement and the battery packs not replaced in the electric vehicle is large, and heat management is realized by utilizing the opening degree of the three-way proportional valve.
3. A control method applied to the thermal management architecture of the modular battery replacement vehicle type according to any one of claims 1-2, wherein the three-way proportional valve adjusts the opening degree through a duty ratio n, wherein: when the duty ratio n is 0, the flow of the first branch is 0, and the flow of the second branch is equal to the total loop flow; when the duty ratio n is 1, the flow of the first branch is equal to the total loop flow, the flow of the second branch is 0, and the rest duty ratios are adjusted linearly.
4. The control method of claim 3, wherein when the BMS requests a heating mode, the linear adjustment is adjusted as follows:
when T1 is more than or equal to T2 and | T1| > or more than | T2|, n = | T2 |/(| T1| + | T2 |);
when T1 is more than or equal to T2 and | T1| < | T2|, n = | T1 ≧ l/(| T1| + | T2 |);
when T1 is less than T2 and | T1| ≧ T2|, n = | T1 |/(| T1| + | T2 |);
when T1< T2 and | T1| < | T2|, n = | T2 |/(| T1| + | T2 |).
5. The control method according to claim 4, wherein when the BMS requests a cooling mode, the linear adjustment is adjusted according to: n = | T1 |/(| T1| + | T2 |).
6. The control method according to claim 4, wherein the duty ratio n =50% when the BMS requests the temperature equalization mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211123325.XA CN115377562A (en) | 2022-09-15 | 2022-09-15 | Heat management framework and control method of modular battery replacement vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211123325.XA CN115377562A (en) | 2022-09-15 | 2022-09-15 | Heat management framework and control method of modular battery replacement vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115377562A true CN115377562A (en) | 2022-11-22 |
Family
ID=84071639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211123325.XA Withdrawn CN115377562A (en) | 2022-09-15 | 2022-09-15 | Heat management framework and control method of modular battery replacement vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115377562A (en) |
-
2022
- 2022-09-15 CN CN202211123325.XA patent/CN115377562A/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109447323B (en) | Comprehensive energy system two-stage capacity configuration method considering node heat price | |
| CN207910029U (en) | Liquid cooling apparatus, power battery pack and the electric vehicle of battery pack | |
| CN111403849B (en) | Series-parallel controllable power battery air-cooling heat management experimental system | |
| CN104859470A (en) | Vehicle | |
| CN111312954B (en) | Electric vehicle battery thermal management device and thermal management method | |
| Broatch et al. | Different strategies in an integrated thermal management system of a fuel cell electric bus under real driving cycles in winter | |
| CN115000577A (en) | Energy storage cabinet temperature control system and temperature control method | |
| CN112687984A (en) | Efficient battery thermal management system and method | |
| CN115663871B (en) | Flow power station control system and method | |
| CN217009340U (en) | Energy storage container | |
| US20240164055A1 (en) | Fluid management system for mobile charging system | |
| CN212303763U (en) | Battery thermal management device of thermoelectric cooling coupling liquid cooling | |
| CN115377562A (en) | Heat management framework and control method of modular battery replacement vehicle | |
| CN117477627A (en) | Energy-saving intelligent control method for data center energy system based on hybrid energy storage | |
| CN115566322B (en) | Device for cooling battery pack and control method | |
| CN218513530U (en) | Battery thermal management system of container type energy storage system | |
| CN110303942B (en) | Electric vehicle battery grouping management system and operation method | |
| CN216818458U (en) | Novel series-parallel combined water cooling system | |
| CN103282223B (en) | For the method for the inner space of heater motor vehicle | |
| CN107559946B (en) | Secondary pump controller of heat exchange station | |
| CN114497804A (en) | Battery thermal management system, control method and vehicle | |
| CN113054276B (en) | Internal heat exchange circulation control method for battery replacement station | |
| CN115133066A (en) | Fuel cell automobile and refrigerating and heating integrated thermal management system and control method thereof | |
| CN113942366A (en) | Cold-hot circulating system of front-and-back double-motor electric automobile and control method | |
| CN220764110U (en) | Liquid cooling light stores up fills system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221122 |
|
| WW01 | Invention patent application withdrawn after publication |