CN114069094A - Battery pack temperature management system and method of electric bicycle and electric bicycle - Google Patents

Battery pack temperature management system and method of electric bicycle and electric bicycle Download PDF

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Publication number
CN114069094A
CN114069094A CN202111275073.8A CN202111275073A CN114069094A CN 114069094 A CN114069094 A CN 114069094A CN 202111275073 A CN202111275073 A CN 202111275073A CN 114069094 A CN114069094 A CN 114069094A
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China
Prior art keywords
temperature control
temperature
battery pack
instruction
power supply
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Withdrawn
Application number
CN202111275073.8A
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Chinese (zh)
Inventor
门艳茹
王阳
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Mobai Beijing Information Technology Co Ltd
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Mobai Beijing Information Technology Co Ltd
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Priority to CN202111275073.8A priority Critical patent/CN114069094A/en
Publication of CN114069094A publication Critical patent/CN114069094A/en
Withdrawn legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/615Heating or keeping warm
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/63Control systems
    • H01M10/633Control systems characterised by algorithms, flow charts, software details or the like
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The embodiment of the application provides a battery pack temperature management system and method of an electric bicycle and the electric bicycle, and the system comprises the following components: the temperature control device comprises a controller, a temperature control component and a temperature control power supply; the temperature control power supply is electrically connected with the controller and the temperature control assembly and is used for supplying power to the temperature control assembly; the controller is electrically connected with a battery pack of the electric bicycle and used for acquiring a temperature value of the battery pack and generating a temperature control instruction according to the relation between the temperature value and a preset threshold value, wherein the temperature control instruction is used for controlling the temperature control power supply to supply power to the temperature control assembly; the temperature control assembly is used for adjusting the temperature of the battery pack under the condition that the temperature control power supply supplies power to the temperature control assembly.

Description

Battery pack temperature management system and method of electric bicycle and electric bicycle
Technical Field
The disclosed embodiment relates to the technical field of battery pack temperature management of electric bicycles, in particular to a battery pack temperature management system and method of an electric bicycle and the electric bicycle.
Background
The optimal working temperature of the battery pack of the electric bicycle is about 25 ℃, but most of time in the practical application scene cannot meet the temperature requirement, and the service life of the battery pack is influenced.
The existing temperature control of the battery pack is limited by volume and self energy, the aim of heat dissipation is achieved by increasing natural wind and air convection speed in the battery pack shell mainly through the shell of the battery pack, and the temperature of the battery pack cannot be actively adjusted when the temperature of the battery pack is too low. Under severe temperature environment, when the electric bicycle is started, the battery temperature is even lower than the discharge protection temperature set by the BMS, and even the battery cannot discharge, thus severely limiting the use.
Therefore, it is an urgent problem to manage the temperature of the battery pack of the electric bicycle without affecting the energy of the battery pack itself.
Disclosure of Invention
An object of the present disclosure is to provide a battery pack temperature management system and method of an electric bicycle and a new technical solution of the electric bicycle.
According to a first aspect of the present disclosure, there is provided an embodiment of a battery pack temperature management system of an electric bicycle, including: the temperature control device comprises a controller, a temperature control component and a temperature control power supply; the temperature control power supply is electrically connected with the controller and the temperature control assembly and is used for supplying power to the temperature control assembly; the controller is electrically connected with a battery pack of the electric bicycle and used for acquiring a temperature value of the battery pack and generating a temperature control instruction according to the relation between the temperature value and a preset threshold value, wherein the temperature control instruction is used for controlling the temperature control power supply to supply power to the temperature control assembly; the temperature control assembly is used for adjusting the temperature of the battery pack under the condition that the temperature control power supply supplies power to the temperature control assembly.
Optionally, the temperature control assembly comprises a cooling device and a heating device, and the cooling device and the heating device are both arranged on the outer side of the battery pack; the temperature reduction device is used for reducing the temperature of the battery pack under the condition that the temperature control instruction is a temperature reduction instruction; the heating device is used for increasing the temperature of the battery pack under the condition that the temperature control instruction is a heating instruction.
Optionally, a battery pack shell is arranged on the outer side of the battery pack, the battery pack shell is provided with a plurality of cavities, and the cooling device and the heating device are respectively arranged in the cavities of the battery pack shell, which are different from each other.
Optionally, a battery pack shell is arranged on the outer side of the battery pack, and the temperature control assembly is arranged on the outer side of the battery pack shell in a turnover mode.
Optionally, the temperature control power supply comprises a solar panel, and the solar panel is arranged on the electric bicycle.
According to a second aspect of the present disclosure, there is provided an embodiment of a battery pack temperature management method of an electric bicycle, including: acquiring a temperature value of the battery pack; generating a temperature control instruction according to the relation between the temperature value and a preset threshold value; and controlling the temperature control component to execute corresponding cooling or heating actions according to the temperature control instruction.
Optionally, the generating a temperature control instruction according to the relationship between the temperature value and a preset threshold includes: generating a cooling instruction under the condition that the temperature value is greater than a first threshold value; and generating a heating instruction when the temperature value is smaller than a second threshold value.
Optionally, controlling the temperature control assembly to perform a corresponding cooling or heating action according to the temperature control instruction includes: under the condition that the temperature control instruction is a cooling instruction, controlling a temperature control power supply to supply power to a cooling device; and under the condition that the temperature control instruction is a heating instruction, controlling a temperature control power supply to supply power to the heating device.
Optionally, after generating a temperature control instruction according to a relationship between the temperature value and a preset threshold, the method further includes: and detecting the relation between the temperature value and a third threshold value, and generating a temperature control power supply dormancy instruction under the condition that the temperature value is equal to the third threshold value, wherein the temperature control power supply dormancy instruction is used for controlling the temperature control power supply to be in an energy storage state and stopping supplying power to the temperature control assembly.
According to a third aspect of the present disclosure, there is provided one embodiment of a battery pack temperature management device of an electric bicycle, the device including: the data acquisition module is used for acquiring the temperature value of the battery pack; the instruction generating module is used for generating a temperature control instruction according to the relation between the temperature value and a preset threshold value; and the control module is used for controlling the temperature control assembly to execute corresponding cooling or heating actions according to the temperature control instruction.
According to a fourth aspect of the present disclosure, there is provided an embodiment of an electronic device, comprising a memory for storing a computer program and a processor; the processor is configured to execute the computer program to implement the method according to the second aspect of the present description.
According to a fifth aspect of the present disclosure, there is provided an embodiment of an electric bicycle, including a vehicle body and a battery pack temperature management system, the vehicle body being provided with the battery pack temperature management system, the battery pack temperature management system being the battery pack temperature management system of the electric bicycle of the first aspect.
The beneficial effect of this disclosed embodiment lies in, this embodiment is through setting up solar cell panel as independent control by temperature change power, for the power supply of temperature control component through the control by temperature change power, can carry out temperature control to the battery package under the condition that does not consume battery package self energy.
Other features of the present description and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description, serve to explain the principles of the specification.
FIG. 1 is an overall system framework of an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a battery pack temperature management system of an electric bicycle to which an embodiment of the present disclosure can be applied;
FIG. 3 is a schematic diagram illustrating an arrangement of the temperature control assembly and the battery pack according to the present embodiment;
FIG. 4 is a schematic diagram illustrating another arrangement of the temperature control assembly and the battery pack in the present embodiment;
FIG. 5 is a schematic diagram illustrating another arrangement of the temperature control assembly and the battery pack in this embodiment;
fig. 6 is a flowchart illustrating a battery pack temperature management method of an electric bicycle according to an embodiment;
fig. 7 is a schematic structural view of a battery pack temperature management device of the electric bicycle of the present embodiment;
FIG. 8 is a block schematic diagram of an electronic device according to one embodiment;
fig. 9 is a schematic structural view of an electric bicycle according to an embodiment.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The embodiment of the disclosure relates to a temperature control application scenario of a battery pack of an electric bicycle.
The best operating temperature of electric bicycle's battery package is about 25 degrees, but hardly maintain this temperature value in the practical application scene, current mode of controlling the temperature of battery, mainly use on the car, electric automobile can adopt liquid cooling or air-cooled mode to cool down the battery package to the temperature control of battery, under the low temperature condition, carry out the intensification processing to the battery package through the heater, realize the temperature regulation of electric automobile battery package, but electric bicycle and electric automobile's structure and cost are different, electric bicycle needs to consume battery package self energy if adopting the liquid cooling mode, and the cost is higher, and the battery to electric bicycle is whole comparatively small in size, self energy is limited, it is difficult to adopt the liquid cooling mode to carry out battery package temperature regulation.
The battery management assembly of the conventional electric bicycle does not have the design of active heat dissipation and temperature rise of a battery pack, and only realizes cooling in a high-temperature scene through heat dissipation such as natural wind or air convection, and does not have the active temperature rise design at a low temperature.
In view of the above needs, the present disclosure provides a battery pack temperature management system and method for an electric bicycle, and an electric bicycle, in which an energy-saving power supply is independently provided, the battery pack energy is not occupied, and the temperature of the battery pack is controlled in real time according to the temperature of the battery.
< hardware configuration >
FIG. 1 can be used to implement an overall system framework for embodiments of the present disclosure.
As shown in fig. 1, the system includes a server 2000, an electronic apparatus 1000, and a vehicle 3000.
The server 2000 and the electronic apparatus 1000, and the server 2000 and the vehicle 3000 may be communicatively connected through a network 4000. The vehicle 3000 and the server 2000, and the network 4000 over which the electronic apparatus 1000 and the server 2000 communicate with each other may be the same or different. The network 4000 may be a wireless communication network or a wired communication network, and may be a local area network or a wide area network.
The server 2000 provides a service point for processes, databases, and communications facilities. The server 2000 may be a monolithic server, a distributed server across multiple computers, a computer data center, a cloud server, or a cloud-deployed server cluster, etc. The server may be of various types, such as, but not limited to, a web server, a news server, a mail server, a message server, an advertisement server, a file server, an application server, an interaction server, a database server, or a proxy server. In some embodiments, each server may include hardware, software, or embedded logic components or a combination of two or more such components for performing the appropriate functions supported or implemented by the server. The specific configuration of the server 2000 may include, but is not limited to, a processor 2100, a memory 2200, an interface device 2300, and a communication device 2400. Processor 2100 is used to execute computer programs written in an instruction set of an architecture such as x86, Arm, RISC, MIPS, SSE, and so on. The memory 2200 is, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, or the like. The interface device 2300 is, for example, a USB interface, a serial interface, a parallel interface, or the like. The communication device 2400 is, for example, capable of wired communication or wireless communication, and may include, for example, WiFi communication, bluetooth communication, 2G/3G/4G/5G communication, and the like.
As applied to the disclosed embodiment, the memory 2200 of the server 2000 is configured to store a computer program for controlling the processor 2100 to operate so as to implement the method according to the disclosed embodiment. The skilled person can design the computer program according to the solution disclosed in the present disclosure. How the computer program controls the processor to operate is well known in the art and will not be described in detail here.
It will be understood by those skilled in the art that the server 2000 may include other devices besides the devices shown in fig. 1, and is not limited thereto.
In this embodiment, the electronic device 1000 is, for example, a mobile phone, a laptop, a tablet computer, a palmtop, a wearable device, or the like.
The electronic device 1000 is equipped with a vehicle application client, and a user can operate the vehicle application client to achieve the purpose of using the vehicle 3000.
The electronic device 1000 may include, but is not limited to, a processor 1100, a memory 1200, an interface device 1300, a communication device 1400, a display device 1500, an input device 1600, a speaker 1700, a microphone 1800, and the like. The processor 1100 may be a central processing unit CPU, a graphics processing unit GPU, a microprocessor MCU, or the like, and is configured to execute a computer program, and the computer program may be written by using an instruction set of architectures such as x86, Arm, RISC, MIPS, and SSE. The memory 1200 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The interface device 1300 includes, for example, a USB interface, a serial interface, a parallel interface, and the like. The communication device 1400 is capable of wired communication using an optical fiber or a cable, or wireless communication, and specifically may include WiFi communication, bluetooth communication, 2G/3G/4G/5G communication, and the like. The display device 1500 is, for example, a liquid crystal display panel, a touch panel, or the like. The input device 1600 may include, for example, a touch screen, a keyboard, a somatosensory input, and the like. The speaker 1170 is used to output audio signals. The microphone 1180 is used to pick up audio signals.
As applied to the disclosed embodiments, the memory 1200 of the electronic device 1000 is used to store a computer program for controlling the operation of the processor 1100 to perform the method of the disclosed embodiments, and how the computer program controls the operation of the processor is well known in the art and will not be described in detail herein. The electronic device 1000 may be installed with an intelligent operating system (e.g., Windows, Linux, android, IOS, etc. systems) and application software.
It should be understood by those skilled in the art that although a plurality of means of the electronic device 1000 are shown in fig. 1, the electronic device 1000 of the embodiments of the present disclosure may refer only to some of the means therein, for example, only to the processor 1100, the memory 1200, and the like.
The vehicle 3000 is provided with a battery pack, and may be an electric bicycle shown in fig. 1, an electric tricycle, a motorcycle, a four-wheel passenger car, or the like, but is not limited thereto.
The vehicle 3000 may include, but is not limited to, a processor 3100, a memory 3200, an interface device 3300, a communication device 3400, a display device 3500, an input device 3600, a speaker 3700, a microphone 3800, and so forth. The processor 3100 may be a microprocessor MCU or the like. The memory 3200 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The interface 3300 includes, for example, a USB interface, a serial interface, a parallel interface, and the like. The communication device 3400 can perform wired communication using an optical fiber or a cable, for example, or perform wireless communication, and specifically may include WiFi communication, bluetooth communication, 2G/3G/4G/5G communication, or the like. The display device 3500 may be, for example, a liquid crystal display panel, a touch panel, or the like. The input device 3600 may include, for example, a touch panel, a keyboard, or the like, and may input voice information through a microphone. Vehicle 3000 may output audio signals through speaker 3700 and capture audio signals through microphone 3800.
As applied to the disclosed embodiment, the memory 3200 of the vehicle 3000 is configured to store a computer program for controlling the processor 3100 to operate to perform information interaction with the server 2000, such as the processor 3100 uploading data of the battery management system in a battery pack to the server. How the computer program controls the processor to operate is well known in the art and will not be described in detail here.
Although a plurality of devices of the vehicle 3000 are shown in fig. 1, the present invention may relate only to some of the devices, for example, the vehicle 3000 relates only to the processor 3100, the memory 3200, and the communication device 3400.
It should be understood that although fig. 1 shows only one server 2000, electronic device 1000, vehicle 3000, there is no intention to limit the number of each, and multiple servers 2000, multiple electronic devices 1000, multiple vehicles 3000 may be included in the present system.
Various embodiments and examples according to the present invention are described below with reference to the accompanying drawings.
< System embodiment >
Referring to fig. 2, the present embodiment provides a battery pack temperature management system 200 of an electric bicycle, the system including: a controller 210, a temperature control assembly 230, and a temperature controlled power supply 220;
in this embodiment, the temperature control power supply 220 includes a solar panel, and the solar panel is disposed on the electric bicycle and electrically connected to the controller 210 and the temperature control module 230.
In some examples, the temperature controlled power supply 220 may also be an energy conversion device, for example, an input of which is connected to a wheel of the electric bicycle for converting a portion of kinetic energy of the electric bicycle into electric energy.
When control by temperature change power 220 is solar cell panel, solar cell panel can fix and lay in electric bicycle's seat bucket outside, also can lay in the bicycle basket, can guarantee on the one hand that solar cell panel can receive the sunlight, and on the other hand does not influence user's the riding.
In this embodiment, the temperature control power supply 220 is a power supply independent of the battery pack of the electric bicycle, so that the temperature control assembly can be supplied with power without affecting the energy of the battery pack of the electric bicycle.
Certainly, under the extreme conditions of continuous rain or cloudy days and the like, the solar panel can not store electric energy, and a battery pack can be used for supplying power to the temperature control assembly.
In this embodiment, the controller 210 is electrically connected to a battery pack of the electric bicycle, and is configured to obtain a temperature value of the battery pack and generate a temperature control instruction according to a relationship between the temperature value and a preset threshold, where the temperature control instruction is used to control the temperature control power supply to supply power to the temperature control component.
In some examples, the controller may be a master control of the electric bicycle, or may be a separate control unit, such as a single chip microcomputer. It can be understood that a battery Management system BMS (battery Management system) is provided in the battery pack, and the BMS may monitor the temperature of the battery pack, and collect and store the temperature of the battery pack through a sensor or other sensing devices. The present embodiment may obtain the real-time temperature value of the battery pack in the BMS. And generating a temperature control instruction according to a relationship between the real-time temperature value of the battery pack and a preset threshold, wherein the preset threshold may be a normal working temperature value of the battery pack, for example, the preset threshold may be 25 degrees, and of course, the preset threshold may be set according to different types of battery packs and an optimal working interval.
The temperature control assembly 230 of this embodiment is used for adjusting the temperature of the battery pack when the temperature control power supply supplies power to the temperature control assembly.
In this embodiment, the temperature control assembly 230 includes a cooling device 231 and a heating device 232, and both the cooling device 231 and the heating device 232 are disposed outside the battery pack. In one example, because the semiconductor cooling plate has its own property that both ends thereof can absorb heat and emit heat respectively, that is, one end of the semiconductor cooling plate can cool and the other end can heat, the cooling device and the heating device in this embodiment can be both semiconductor cooling plates.
In another example, the cooling device may be a semiconductor cooling plate, and the heating device may be a semiconductor heating plate or a heating film, but of course, the cooling device may also be other cooling devices such as a heat sink, and the heating device may also be other heating devices, which are not listed here.
In some examples, when the cooling device is a semiconductor cooling plate and the heating device is a semiconductor heating plate, all the semiconductor cooling plates are electrically connected with each other and then connected to the temperature control power supply, and all the semiconductor heating plates are electrically connected with each other and then connected to the temperature control power supply.
It is understood that the battery pack is generally provided at the outer periphery thereof with a battery pack case for protecting the battery pack from external pressure. In this embodiment, some examples of the position relationship between the cooling device and the heating device and the battery pack are given, a battery pack shell is arranged on the outer side of the battery pack, the battery pack shell has a plurality of cavities, and the cooling device and the heating device are respectively arranged in different cavities of the battery pack shell. That is to say, cooling device and heating device inlay in the different cavity of battery package casing, can make cooling device and heating device fine fix in the periphery of battery package. When the cooling device and the heating device are both semiconductor cooling plates, the cooling surface of the semiconductor cooling plate used as the cooling device is close to the battery pack, and the heating surface of the semiconductor cooling plate used as the cooling device is far away from the battery pack. In the same way, the heating surface of the semiconductor refrigerating sheet used as the heating device is close to the battery pack, and the refrigerating surface of the semiconductor refrigerating sheet used as the heating device is far away from the battery pack.
Referring to fig. 3, a battery pack case 301 is arranged at the periphery of a battery pack 300, the battery pack case 301 has a cavity, a semiconductor cooling sheet 302 is arranged in the cavity, and the semiconductor cooling sheet 302 shown in fig. 3 is embedded in the cavity of the battery pack case 301.
In another example, a battery pack case is disposed outside the battery pack 300, the temperature control assembly includes a combination body formed by mutually attaching a cooling device and a heating device, and the temperature control assembly is disposed outside the battery pack case in a rotatable manner.
For example, the cooling device is a semiconductor cooling sheet, the heating device is a heating film, the semiconductor cooling sheet and the heating film can be bonded to form a temperature control assembly formed by combining the semiconductor cooling sheet and the heating film, a connecting piece can be arranged at a corner of the battery pack shell, and the temperature control assembly can be fixed on the periphery of the battery pack shell through the connecting piece. For example, the connecting piece and the temperature control component can be respectively provided with a female buckle and a male buckle which are mutually clamped, so that the temperature control component can be overturned. In another example, the temperature control assembly and the connecting member may also be magnetically engaged, so that both sides of the temperature control assembly can be turned over with respect to the outer side of the battery pack.
Referring to fig. 4, connectors 401 are disposed at four corners of the battery pack 300, the connectors 401 may be fixed at the corners of the battery pack 300, or detachably connected to the battery pack, and the temperature control assembly 402 may be detachably connected to the connectors 401 by means of clamping or magnetic attraction (not shown in the figure), so as to enable the temperature control assembly to be turned over.
In another example, when the cooling device and the heating device are both semiconductor cooling plates, the cooling device and the heating device may not be adhered, and the cooling device and the heating device are respectively arranged on the outer side of the battery pack shell in a turnover manner.
In addition, when the cooling device and the heating device are both semiconductor refrigerating sheets, the cooling device and the heating device can also be arranged in a soft sleeve, and the shape of the soft sleeve is matched with the battery pack or the battery pack shell, so that the soft sleeve is sleeved on the outer side of the battery pack or the battery pack shell. Referring to fig. 5, a battery pack shell 501 is arranged on the outer side of the battery pack 300, a soft sleeve 503 is sleeved on the periphery of the battery pack shell 501, and the temperature control assembly 502 is arranged in the soft sleeve 503.
The cooling device and the heating device of this embodiment can set up in the outside of battery package casing, can avoid directly to the battery package heating or the battery package discharge instability that the cooling caused on the one hand, and on the other hand can satisfy the internal temperature rise or the reduction of battery package to rise or reduce the temperature of battery package.
In some examples, when the temperature is too low, the temperature of the battery pack needs to be increased, and when the temperature is too high, the temperature of the battery pack needs to be decreased, and therefore, the temperature control command includes a temperature decrease command and a heating command.
In this embodiment, the temperature reduction device is configured to reduce the temperature of the battery pack when the temperature control instruction is the temperature reduction instruction; the heating device is used for increasing the temperature of the battery pack under the condition that the temperature control instruction is a heating instruction.
It can be understood that the temperature control assembly can only work under power drive, and when the temperature control instruction is a cooling instruction, the temperature control power supply can be controlled by the temperature control instruction to connect the power supply of the temperature control assembly and start the cooling device simultaneously, so that the temperature control device works to cool the battery pack.
Similarly, when the temperature control instruction is a heating instruction, the temperature control power supply can be controlled to supply power to the heating assembly through the heating instruction so as to enable the heating device to work and heat the battery pack.
This embodiment is through setting up solar cell panel as independent control by temperature change power, and for the temperature control module power supply through the control by temperature change power, under the condition that does not consume battery package self energy, carry out temperature control to the battery package, do not occupy the battery package volume yet, can attach on the battery compartment outer wall, economical and practical.
< method examples >
Fig. 6 is a flowchart illustrating a method for managing the temperature of a battery pack of an electric bicycle according to an embodiment, which may be implemented by the controller in fig. 2 or the electronic device in fig. 1.
As shown in fig. 6, the method for managing the temperature of the battery pack of the electric bicycle according to the present embodiment may include the steps of:
s601, acquiring a temperature value of the battery pack.
In some examples, a BMS is provided in the battery pack, and the BMS may monitor the temperature of the battery pack, collect the temperature of the battery pack through a sensing device such as a sensor, and store the temperature. The present embodiment may obtain the real-time temperature value of the battery pack in the BMS.
S602, generating a temperature control instruction according to the relation between the temperature value and a preset threshold value.
In this embodiment, the preset threshold may be a normal operating temperature interval value of the battery pack, and the cooling instruction is generated when the temperature value is greater than the first threshold.
In one example, assuming that the normal operating temperature range of the battery pack is 22-28 degrees, when the temperature of the battery pack is 25 degrees, the battery pack has the optimal operating efficiency, the first threshold may be 28 degrees, and when the temperature value of the battery pack is greater than 28 degrees, the service life of the battery pack may be affected. For example, if the temperature value of the battery pack is 30 degrees, a temperature decrease command is generated.
Under the condition of generating the cooling instruction, the temperature control power supply is controlled by the cooling instruction to supply power to the cooling assembly, and the cooling device is started simultaneously so as to work and cool the battery pack.
In one example, the heating instruction is generated if the temperature value is less than the second threshold. For example, the second threshold is 22 degrees, and when the temperature value of the battery pack is 20 degrees, and the starting efficiency of the battery pack is slowed, a heating instruction may be generated, and the heating instruction may control the power supply connection of the temperature control power supply to the heating assembly, so that the heating device operates to heat the battery pack.
It can be understood that, in the temperature adjustment process to the battery package, also can acquire the real-time temperature value of the battery package that the BMS transmitted in real time, under the condition that the temperature value reaches within the normal operating range of the battery package, then need not to heat or cool down the battery package again, therefore, this embodiment still includes: and detecting the relation between the temperature value and a third threshold value, and generating a temperature control power supply dormancy instruction under the condition that the temperature value is equal to the third threshold value, wherein the temperature control power supply dormancy instruction is used for controlling the temperature control power supply to be in an energy storage state and stopping supplying power to the temperature control assembly. For example, after the temperature control power supply supplies power to the temperature reduction device, the temperature of the battery is reduced from 30 degrees to 25 degrees, at this time, the battery pack is considered to be at the optimal working temperature, a temperature control power supply sleep instruction is generated, the temperature control power supply stops supplying power to the temperature control assembly after receiving the temperature control power supply sleep instruction, and the mode of stopping supplying power can be realized by disconnecting the temperature control power supply and the temperature control assembly through the switch piece.
And S603, controlling the temperature control component to execute corresponding cooling or heating actions according to the temperature control instruction.
In this embodiment, under the condition that the temperature control instruction is a cooling instruction, the controller issues the cooling instruction to the temperature control power supply, and the temperature control power supply can switch on the connection between the temperature control power supply and the cooling device by closing the switch member, so as to supply power to the cooling device, and the cooling device executes a cooling action under the condition of switching on the circuit.
In this embodiment, when the temperature control instruction is a heating instruction, the controller issues the heating instruction to the temperature control power supply, the temperature control power supply may close the switch to connect the temperature control power supply to the heating device, so as to supply power to the heating device, and the heating device executes a heating action when the circuit is connected.
This embodiment is through setting up solar cell panel as independent control by temperature change power, and for the power supply of temperature control subassembly through the control by temperature change power, according to the real-time temperature of battery package and the comparison of predetermineeing the threshold value, the temperature that comes the control battery package maintains in normal operating range, can carry out temperature control to the battery package under the condition that does not consume battery package self energy.
< apparatus embodiment >
Fig. 7 is a functional block diagram of an apparatus according to one embodiment. As shown in fig. 6, the battery pack temperature management apparatus 700 of the electric bicycle may include:
and the data acquisition module 701 is used for acquiring a temperature value of the battery pack.
An instruction generating module 702, configured to generate a temperature control instruction according to a relationship between the temperature value and a preset threshold.
And the control module 703 is configured to control the temperature control component to perform a corresponding cooling or heating action according to the temperature control instruction.
In one example, the instruction generating module 702 is configured to generate a cooling instruction when the temperature value is greater than a first threshold value; and generating a heating instruction when the temperature value is smaller than a second threshold value.
In one example, the control module 703 is configured to control the temperature control power supply to supply power to the temperature reduction device when the temperature control instruction is a temperature reduction instruction; and under the condition that the temperature control instruction is a heating instruction, controlling a temperature control power supply to supply power to the heating device.
In an example, the instruction generating module 702 is further configured to detect a relationship between the temperature value and a third threshold, and generate a temperature control power supply sleep instruction when the temperature value is equal to the third threshold, where the temperature control power supply sleep instruction is used to control the temperature control power supply to be in an energy storage state and stop supplying power to the temperature control component.
This embodiment is through setting up solar cell panel as independent control by temperature change power, and for the power supply of temperature control subassembly through the control by temperature change power, according to the real-time temperature of battery package and the comparison of predetermineeing the threshold value, the temperature that comes the control battery package maintains in normal operating range, can carry out temperature control to the battery package under the condition that does not consume battery package self energy.
< apparatus embodiment >
Fig. 8 is a hardware configuration diagram of an electronic device according to another embodiment.
As shown in fig. 8, the electronic device 800 comprises a processor 810 and a memory 820, the memory 820 being adapted to store an executable computer program, the processor 810 being adapted to perform a method according to any of the above method embodiments, under control of the computer program.
The electronic device 800 may be the controller in fig. 2 or the electronic device in fig. 1.
The modules of the electronic device 800 may be implemented by the processor 810 in the present embodiment executing the computer program stored in the memory 820, or may be implemented by other circuit structures, which is not limited herein.
< production example >
The embodiment provides an electric bicycle 900, which comprises a bicycle body 901 and a battery pack temperature management system 200, wherein the bicycle body is provided with the battery pack temperature management system, and the battery pack temperature management system is the battery pack temperature management system of the electric bicycle in fig. 2.
The present embodiments provide a computer-readable storage medium having stored therein an executable command, which when executed by a processor, performs the method described in any of the method embodiments of the present specification.
One or more embodiments of the present description may be a system, method, and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the specification.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations for embodiments of the present description may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, an electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), can execute computer-readable program instructions to implement various aspects of the present description by utilizing state information of the computer-readable program instructions to personalize the electronic circuit.
Aspects of the present description are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the description. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present description. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, implementation by software, and implementation by a combination of software and hardware are equivalent.
The foregoing description of the embodiments of the present specification has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the application is defined by the appended claims.

Claims (12)

1. A battery pack temperature management system of an electric bicycle, comprising: the temperature control device comprises a controller, a temperature control component and a temperature control power supply;
the temperature control power supply is electrically connected with the controller and the temperature control assembly and is used for supplying power to the temperature control assembly;
the controller is electrically connected with a battery pack of the electric bicycle and used for acquiring a temperature value of the battery pack and generating a temperature control instruction according to the relation between the temperature value and a preset threshold value, wherein the temperature control instruction is used for controlling the temperature control power supply to supply power to the temperature control assembly;
the temperature control assembly is used for adjusting the temperature of the battery pack under the condition that the temperature control power supply supplies power to the temperature control assembly.
2. The system of claim 1, wherein the temperature control assembly comprises a cooling device and a heating device, both disposed outside of the battery pack;
the temperature reduction device is used for reducing the temperature of the battery pack under the condition that the temperature control instruction is a temperature reduction instruction;
the heating device is used for increasing the temperature of the battery pack under the condition that the temperature control instruction is a heating instruction.
3. The system of claim 2, wherein a battery pack housing is disposed outside the battery pack, the battery pack housing has a plurality of cavities, and the cooling device and the heating device are disposed in different cavities of the battery pack housing.
4. The system of claim 2, wherein a battery pack shell is arranged on the outer side of the battery pack, and the temperature control assembly is arranged on the outer side of the battery pack shell in a reversible mode.
5. The system of claim 1, wherein the temperature controlled power source comprises a solar panel disposed on the electric bicycle.
6. A battery pack temperature management method for an electric bicycle is characterized by comprising the following steps:
acquiring a temperature value of the battery pack;
generating a temperature control instruction according to the relation between the temperature value and a preset threshold value;
and controlling the temperature control component to execute corresponding cooling or heating actions according to the temperature control instruction.
7. The method of claim 6, wherein generating a temperature control command according to the relationship between the temperature value and a preset threshold comprises:
generating a cooling instruction under the condition that the temperature value is greater than a first threshold value;
and generating a heating instruction when the temperature value is smaller than a second threshold value.
8. The method of claim 6, wherein controlling the temperature control assembly to perform a corresponding cooling or heating action according to the temperature control command comprises:
under the condition that the temperature control instruction is a cooling instruction, controlling a temperature control power supply to supply power to a cooling device;
and under the condition that the temperature control instruction is a heating instruction, controlling a temperature control power supply to supply power to the heating device.
9. The method of claim 6, wherein after generating a temperature control command based on the relationship of the temperature value to a preset threshold, the method further comprises:
and detecting the relation between the temperature value and a third threshold value, and generating a temperature control power supply dormancy instruction under the condition that the temperature value is equal to the third threshold value, wherein the temperature control power supply dormancy instruction is used for controlling the temperature control power supply to be in an energy storage state and stopping supplying power to the temperature control assembly.
10. A battery pack temperature management apparatus for an electric bicycle, the apparatus comprising:
the data acquisition module is used for acquiring the temperature value of the battery pack;
the instruction generating module is used for generating a temperature control instruction according to the relation between the temperature value and a preset threshold value;
and the control module is used for controlling the temperature control assembly to execute corresponding cooling or heating actions according to the temperature control instruction.
11. An electronic device comprising a memory and a processor, the memory for storing a computer program; the processor is adapted to execute the computer program to implement the method according to any of claims 6-9.
12. An electric bicycle comprising a body provided with a battery pack temperature management system, and a battery pack temperature management system of the electric bicycle according to any one of claims 1 to 5.
CN202111275073.8A 2021-10-29 2021-10-29 Battery pack temperature management system and method of electric bicycle and electric bicycle Withdrawn CN114069094A (en)

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Application publication date: 20220218