Modularized battery pack and storage battery management system for in-field motor vehicles

Abstract

The utility model relates to a modular battery pack and a storage battery management system for an in-field motor vehicle, the modular battery pack comprises a shell with a positive electrode end and a negative electrode end, the shell is internally provided with a plurality of standard battery cells with standard voltage and an acquisition module; after the plurality of standard battery cells are connected in series, the two ends of the standard battery cells are electrically connected to the positive electrode end and the negative electrode end respectively, so that the positive electrode end and the negative electrode end output a target voltage; the acquisition module comprises an analog front-end unit, a micro-processing unit and an interface unit, the analog front-end unit is used for acquiring voltage, current and temperature of the standard battery cell, converting analog signals into digital signals and sending the digital signals to the micro-processing unit, and the micro-processing unit is used for processing the digital signals and outputting the digital signals through the interface unit.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of storage batteries, and relates to a modular battery pack for indoor motor vehicles and a storage battery management system comprising the modular battery pack. BACKGROUND

[0002] The indoor motor vehicles mainly include two categories of indoor special motor industrial vehicles and indoor special tourist sightseeing vehicles, and most of the indoor motor vehicles adopt storage batteries as power. The indoor motor vehicles usually make the storage batteries into an integral package according to the length, width, height and load of the indoor motor vehicle storage battery compartment, and install the storage batteries at the corresponding position of the motor vehicle. Each model and specification of the indoor motor vehicle needs to be designed and matched with system parameters separately according to different requirements, so as to meet the requirements of the power system of the indoor motor vehicle. From the installation, debugging and transportation of the storage battery to the installation and debugging of the indoor motor vehicle and the maintenance of the indoor motor vehicle in the process of use, it is very complex and cumbersome, and it is extremely inconvenient. When the storage battery fails, the quality of the storage battery is generally from several dozen kilograms to several hundred kilograms, and individual storage batteries reach several tons. The storage battery cannot be repaired on site due to the large number of spare parts, and can only be repaired in the factory, which results in long repair time and high repair cost. CONTENT OF THE UTILITY MODEL

[0003] In order to overcome the problems in the related art, the application aims to provide a modular battery pack for indoor motor vehicles, which can decompose the storage battery into a general module, has small volume and light weight, and can be quickly installed, debugged, replaced and repaired by an individual.

[0004] The application is implemented through the following technical solutions.

[0005] The technical solution provides a modular battery pack for indoor motor vehicles, which comprises a shell with a positive terminal and a negative terminal, the inside of the shell is provided with a plurality of standard battery cells with a standard voltage and a collection module electrically connected with the standard battery cells (14), the plurality of standard battery cells are connected in series and the two ends thereof are respectively electrically connected to the positive terminal and the negative terminal, so that the positive terminal and the negative terminal output a target voltage.

[0006] The collection module comprises an analog front-end unit, a micro-processing unit and an interface unit, the analog front-end unit is used for collecting the voltage, current and temperature of the standard battery cells, converting the analog signals into digital signals for the micro-processing unit, and the micro-processing unit is used for processing the digital signals and outputting the processed digital signals through the interface unit.

[0007] The modular battery pack of the present application is small in size and light in weight, and can be quickly installed, debugged, replaced and maintained by individuals. The analog front end unit (AEF) and the micro control unit (MCU) are used to achieve more advanced control. The AEF is responsible for converting analog signals such as voltage, current and temperature of the battery into digital signals for further processing by the microcontroller or processor. The AEF can also provide monitoring, optimization and protection of the battery pack by integrating multiple functions, adapt to more scene applications, and ensure safe operation and maximum service life of the battery pack.

[0008] In practical applications, the modular battery packs are connected in series by power lines, which can be installed in the battery compartment of a motor vehicle to meet the power system of the motor vehicle. The motor vehicle factory can also quickly install and debug according to the needs. In case of failure, if on-site maintenance is not possible, the modular battery pack can be directly replaced without the need for vehicle battery pack maintenance or return to the factory, saving a lot of time and maintenance costs.

[0009] In one or more embodiments, the standard battery cell is a nickel-cobalt-manganese battery cell, a nickel-cobalt-aluminum battery cell, a lithium-manganese battery cell, a lithium-iron-phosphate battery cell, a sodium-ion battery cell, or a lithium-titanate battery cell.

[0010] In one or more embodiments, the number of standard battery cells is 2-5, and the target voltage is 6-12.8V.

[0011] In one or more embodiments, the analog front end unit is also connected to the positive terminal and the negative terminal for collecting the voltage analog signal between the positive terminal and the negative terminal and converting it into a digital signal for the micro processing unit.

[0012] In one or more embodiments, the interface unit includes one or more combinations of a CAN bus interface, an RS485 interface, a display interface, and a TTL interface.

[0013] In one or more embodiments, the acquisition module further includes a circuit board on which the analog front end unit, the micro processing unit, and the interface unit are integrated.

[0014] In one or more embodiments, a heating component is further included for heating the standard battery cell, and the heating component is a heating film.

[0015] Another technical solution of the present application is to provide a battery management system, which includes a battery control module and at least one modular battery pack for motor vehicles as described above. A plurality of modular battery packs are connected in series to output a system voltage.

[0016] The collection module of each modular battery pack is connected with the battery control module, and the battery control module is used for controlling charging, discharging and heating of the modular battery pack and receiving and processing signals of the collection module.

[0017] In one or more embodiments, the system voltage is 36V, 48V, 72V, 96V or 144V.

[0018] It should be understood that the general description above and the following detailed description are only exemplary and explanatory, and are not limiting to the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the several views.

[0020] Figure 1 is a structural block diagram of a modular battery pack shown in an embodiment of the present application.

[0021] Figure 2 is a structural block diagram of a battery management system shown in an embodiment of the present application.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 1-modular battery pack; 10-housing; 11-positive electrode end; 12-negative electrode end; 14-standard battery cell; 15-analog front-end unit; 16-micro-processing unit; 17-interface unit; 21-battery control module. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of some embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0025] The technical solutions of the embodiments of the present application will be described in detail below in conjunction with the drawings.

[0026] Embodiment One

[0027] As Figure 1As shown in the figure, the embodiment is a modular battery pack 1 for in-field motor vehicles, comprising a shell 10 with a positive terminal 11 and a negative terminal 12, and a plurality of standard cells 14 with standard voltage and a collection module inside the shell 10, the plurality of standard cells 14 are connected in series with each other and the two ends are respectively connected to the positive terminal 11 and the negative terminal 12, so that the positive terminal 11 and the negative terminal 12 output a target voltage;

[0028] The collection module comprises an analog front-end unit 15, a micro-processing unit 16 and an interface unit 17, the analog front-end unit 15 is used to collect the voltage, current and temperature of the standard cells 14, and convert the analog signals into digital signals for the micro-processing unit 16, the micro-processing unit 16 comprises a microprocessor MCU, which is used to process the digital signals and output them through the interface unit 17.

[0029] The modular battery pack 1 in the embodiment is small in size and light in weight, and can be quickly installed, debugged, replaced and maintained by individuals. The analog front-end unit 15 AEF and the micro-processing unit 16 (MCU) are used to achieve more advanced control, the analog front-end unit 15 is responsible for converting the analog signals such as voltage, current and temperature of the battery into digital signals for further processing by the microcontroller or processor, and can also provide monitoring, optimization and protection for the battery pack by integrating multiple functions, adapt to more scene applications, and ensure the safe operation and maximum service life of the battery pack.

[0030] In the embodiment, the standard cells 14 are nickel-cobalt-manganese cells, nickel-cobalt-aluminum cells, lithium-manganese cells, lithium-iron-phosphate cells, sodium-ion cells or lithium-titanate cells.

[0031] It should be noted that each standard cell 14 has a standard voltage, and a plurality of standard cells 14 can be selected for series connection according to the required target voltage, for example, two lithium-iron-phosphate cells with a standard voltage of 3.2V are connected in series to obtain a modular battery pack 1 with a target voltage of 6.4V, in addition, the number of standard cells 14 can be three, four or five, and a modular battery pack 1 with a target voltage of 6-12.8V can be obtained.

[0032] In the embodiment, the analog front-end unit 15 is also connected to the positive terminal 11 and the negative terminal 12, and is used to collect the voltage analog signal between the positive terminal 11 and the negative terminal 12 and convert it into a digital signal for the micro-processing unit 16, the analog front-end unit 15 is an analog front-end chip (AEF), and exemplary AEF chips of brands such as Intel, Jiahuate and Pengshen Technology can be selected.

[0033] In this embodiment, the acquisition module also includes a circuit board, which integrates an analog front-end unit 15, a microprocessor unit 16, and an interface unit 17. The circuit board also has a reset function, which can be used to activate and restore the acquisition module in a dormant state. The interface unit 17 includes a CAN bus interface, an RS485 interface, a display interface, and a TTL interface.

[0034] In this embodiment, a heating component is also provided outside the standard battery cell 14. The heating component is used to heat the standard battery cell 14. For example, the heating component is a heating diaphragm.

[0035] Example 2

[0036] like Figure 2 As shown in the figure, this embodiment is a battery management system for motor vehicles in a parking lot, including a battery control module 21 and a battery, wherein the battery is composed of multiple modular battery packs 1 for motor vehicles in a parking lot as in the first embodiment above, and the multiple modular battery packs 1 are connected in series to output a system voltage.

[0037] Each modular battery pack 1 has a data acquisition module connected to the battery management module 21 via a CAN bus interface or an RS485 interface. The module sends the acquired data to the battery management module 21, which receives and processes the data and uses it to control the charging, discharging, and heating of the modular battery pack 1.

[0038] Depending on the power requirements of the vehicles in the yard, the system voltage of the battery can be 36V, 48V, 72V, 96V, or 144V. For example, six modular battery packs 1 with a target voltage of 6V can form a battery with a system voltage of 36V. A 144V battery can be formed by connecting twelve modular battery packs 1 with a target voltage of 6V in series, and so on. After connecting the modular battery packs 1 in series in Embodiment 1, they are then connected to the battery management module 21. Its positive and negative terminals are connected to the loads such as the electronic controller, instruments, and DC loads of the vehicles in the yard, or to charging devices such as chargers.

[0039] In practical applications, the various modular battery packs 1 are connected in series with power lines and installed in the battery compartment of vehicles within the facility to meet the power system needs of these vehicles. Vehicle manufacturers can also quickly install and debug the system as needed. In case of a malfunction, if on-site repair is not possible, the modular battery pack 1 can be directly disassembled and replaced, eliminating the need for repairing the entire vehicle's battery pack or returning it to the factory, thus saving significant time and repair costs.

[0040] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. It is intended that the scope of the application be defined by the scope of the patent and by the claims as allowed by the patent office, which can include adaptations based on the description, equivalents, and / or substitutions of elements individually or collectively to the entire disclosure.

Claims

1. A modular battery pack for in-field motor vehicles, characterized by, The application relates to a modular battery pack (1) for field motor vehicles, comprising a shell (10) with a positive electrode end (11) and a negative electrode end (12), the inside of the shell (10) being provided with a plurality of standard electrode cores (14) with standard voltage and a collection module electrically connected with the standard electrode cores (14), the plurality of standard electrode cores (14) being connected in series at two ends respectively to the positive electrode end (11) and the negative electrode end (12), so that the positive electrode end (11) and the negative electrode end (12) output a target voltage. The collection module comprises an analog front-end unit (15), a micro-processing unit (16) and an interface unit (17), the analog front-end unit (15) is used for collecting the voltage, current and temperature of the standard electrode core (14), converting an analog signal into a digital signal for the micro-processing unit (16), and the micro-processing unit (16) is used for processing the digital signal and outputting through the interface unit (17).

2. The modular battery pack for in-field motor vehicles of claim 1, wherein, The standard electrode core (14) is a nickel-cobalt-manganese electrode core, a nickel-cobalt-aluminum electrode core, a lithium manganate electrode core, a lithium iron phosphate electrode core, a sodium ion electrode core or a lithium titanate electrode core.

3. The modular battery pack for in-field motor vehicles of claim 1, wherein, The number of the standard electrode cores (14) is 2-5, and the target voltage is 6-12.8V.

4. The modular battery pack for in-field motor vehicles of claim 1, wherein, The analog front-end unit (15) is also connected with the positive electrode end (11) and the negative electrode end (12), and is used for collecting a voltage analog signal between the positive electrode end (11) and the negative electrode end (12) and converting the voltage analog signal into a digital signal for the micro-processing unit (16).

5. The modular battery pack for in-field motor vehicles of claim 1, wherein, The interface unit (17) comprises one or more combinations of a CAN bus interface, an RS485 interface, a display interface and a TTL interface.

6. The modular battery pack for in-field motor vehicles of claim 1, wherein, The collection module further comprises a circuit board, and the analog front-end unit (15), the micro-processing unit (16) and the interface unit (17) are integrated on the circuit board.

7. The modular battery pack for in-field motor vehicles of claim 1, wherein, The application further comprises a heating component, the heating component is used for heating the standard electrode core (14), and the heating component is a heating film.

8. A battery management system for in-field motor vehicles, characterized by, The application relates to a battery control module (21) and at least one modular battery pack (1) for field motor vehicles according to any one of claims 1 to 7, a plurality of the modular battery packs (1) being connected in series to output a system voltage. The collection module of each modular battery pack is connected with the battery control module (21), and the battery control module is used for controlling the charging, discharging and heating of the modular battery pack and receiving and processing the signals of the collection module.

9. The battery management system for in-field motor vehicles of claim 8, wherein, The system voltage is 36V, 48V, 72V, 96V or 144V.

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