Battery thermal management system
By combining the Peltier module with the processor and driver module, precise regulation and real-time management of battery temperature are achieved, solving the problems of low cooling efficiency and safety in traditional battery thermal management systems, and improving battery life and safety.
Patent Information
- Application Number
- CN202422911005.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Traditional air-cooling and liquid-cooling technologies have problems such as low cooling efficiency, system complexity, high cost and high energy consumption in battery thermal management. They cannot effectively solve the problem of excessively high or low battery temperature, which affects battery performance and safety.
It adopts a Peltier module combined with a processor and a driver module to achieve precise temperature regulation by controlling the direction of current. It is also equipped with an energy recovery module and a temperature sensor to monitor and manage battery temperature in real time, and has alarm and power-off functions.
It achieves precise control of battery temperature, avoiding overcooling or overheating, improving energy utilization, ensuring battery safety and performance, and providing real-time alarms and power failure protection.
Smart Images
Figure CN223598829U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field, especially a kind of battery thermal management system. BACKGROUND
[0002] With the rapid development of electric vehicles and energy storage system industry, power battery or energy storage battery has become the core technology of the whole system. However, the battery will generate a lot of heat during operation, and if the temperature cannot be effectively managed, it may lead to excessive temperature or excessive low temperature, thereby affecting the performance, cycle efficiency and service life of the battery, and even causing thermal runaway and other safety problems.
[0003] Currently, traditional air-cooled and liquid-cooled technology is widely used in battery thermal management, but there are many deficiencies. Specifically, air-cooled technology has low cooling efficiency and cannot uniformly cool the entire battery pack, which can easily lead to local overheating. While liquid-cooled technology has better cooling effect, the system control is complex, the equipment is bulky, the installation and maintenance cost is high, and the energy consumption is high.
[0004] Therefore, there is an urgent need for a battery thermal management system to solve the above problems. SUMMARY
[0005] Therefore, the utility model provides a kind of battery thermal management system, can carry out accurate temperature control to battery, avoid local overheating or overcooling. The technical scheme of the utility model is as follows:
[0006] The utility model provides a kind of thermal management battery pack, including: power module, processor, drive module and Peltier module, the power module connects the processor with the Peltier module, for the processor and the Peltier module provide current, the processor is used to receive input signal, and according to the input signal generates adjustment signal, the drive module connects the power module with the Peltier module, the input end of the drive module is connected with the processor, for receiving the adjustment signal, and according to the adjustment signal adjusts the current direction of the Peltier module, the Peltier module is used to switch the heat absorption or heat release of battery cell according to current direction.
[0007] In a possible implementation manner, the drive module includes at least one switching element, the switching element is connected with the output end of the processor, for receiving the adjustment signal, and adjusting the switching state according to the adjustment signal.
[0008] In a possible implementation, the driving module comprises a first switch, a second switch, a third switch and a fourth switch, a first end of the first switch is connected with the positive pole of the power module, a second end of the first switch is connected with the first end of the Peltier module, a first end of the second switch is connected with the second end of the Peltier module, a second end of the second switch is grounded, a first end of the third switch is connected with the negative pole of the power module, a second end of the third switch is connected with the second end of the Peltier module, a first end of the fourth switch is connected with the first end of the Peltier module, and a second end of the fourth switch is grounded; the third ends of the first switch, the second switch, the third switch and the fourth switch are connected with the processor, configured to receive the adjustment signal sent by the processor and adjust the switch state according to the adjustment signal.
[0009] In a possible implementation, the Peltier module comprises at least one Peltier element, the Peltier elements are connected with each other in series, the first end of the Peltier elements connected in series is the first end of the Peltier module, and the last end is the second end of the Peltier module.
[0010] In a possible implementation, the energy recovery module is further included, the energy recovery module is connected with the Peltier module, used for converting the heat energy absorbed by the battery cell into electrical energy storage and providing electrical energy for the Peltier module.
[0011] In a possible implementation, the receiver and the temperature sensor are further included, the temperature sensor is connected with the input end of the receiver, used for detecting the temperature of the battery cell and generating a temperature signal, and then sending the temperature signal to the receiver, the output end of the receiver is connected with the processor, used for generating an input signal according to the temperature signal and sending the input signal to the processor.
[0012] In a possible implementation, the output module is further included, the output module is connected with the processor; the input end of the processor is connected with the receiver, and the output end is connected with the output module, configured to generate an alarm signal according to the input signal and send the alarm signal to the output module; the output end of the output module is connected with the alarm module, used for receiving the alarm signal and sending the alarm signal to the alarm module.
[0013] In a possible implementation, the power-off module is further included, the input end of the power-off module is connected with the output module, and the power-off module is configured to receive the alarm signal and cut off the external power supply of the battery cell.
[0014] In a possible implementation, the processor is connected to the receiver at an input end and to the BMS at an output end, configured to generate a cell data signal according to an input signal and send the cell data signal to the BMS through the output module.
[0015] Specifically, the processor comprises a processing module and a PWM module, the processing module is configured to generate a voltage signal for implementing various functions according to an input signal, an output end of the processing module is connected to the PWM module, for sending the voltage signal to the PWM module, and an input end of the PWM module is connected to the processing module, for receiving the voltage signal and generating a PWM signal for pulse width modulation.
[0016] The utility model has the advantages of the following:
[0017] 1. The utility model discloses a processor and drive module control Peltier module, according to the current direction switching heat absorption or heat release of cell, realize accurate temperature regulation, guarantee the battery temperature in the best range.
[0018] 2. The drive module in the utility model contains a plurality of switch pieces, and the switch state is controlled by the processor, changes the current direction of Peltier module, thereby flexibly adjusting cell temperature, avoids supercooling or overheating.
[0019] 3. The utility model discloses an energy recovery module, converts the heat energy produced when Peltier module absorbs heat into electric energy, stores and reuses, improves energy utilization.
[0020] 4. The utility model discloses a temperature sensor and receiver, can detect cell temperature in real time, generates temperature signal and sends to the processor, realizes the dynamic management to the battery temperature.
[0021] 5. The utility model discloses an alarm and power-off function, and the processor generates alarm signal and sends to the output module, when detecting abnormal condition, output module triggers alarm equipment and power-off module, guarantees the safety of battery. DRAWINGS
[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only one embodiment of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.
[0023] Wherein the same parts are denoted by the same reference signs. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component.
[0024] Figure 1 The overall structural diagram of the embodiment of the utility model.
[0025] In the above drawings, the meanings of the reference signs are as follows:
[0026] 1, power module;
[0027] 2, processor;
[0028] 21, processing module;
[0029] 22, PWM module;
[0030] 3, drive module;
[0031] 31, first switch piece;
[0032] 32, second switch piece;
[0033] 33, third switch piece;
[0034] 34, fourth switch piece;
[0035] 4, Peltier module;
[0036] 5, energy recovery module;
[0037] 6, receiver;
[0038] 7, output module. DETAILED DESCRIPTION
[0039] The technical solutions of the utility model will be described clearly and completely in combination with the embodiments of the utility model and its drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the summary of the application and the detailed description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "including" and "having" and variations thereof herein is meant to encompass the inclusion of but not limited to.
[0041] In the description of the specific embodiments of the application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.
[0042] In the present application, the term "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.
[0043] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents a "or" relationship between the front and rear associated objects.
[0044] Throughout this document, numerical values represent approximate measures or limits to ranges to encompass minor deviations from a given value and embodiments having about the stated value and embodiments having the stated exact value. Except in the working examples provided at the end of the detailed description, all numerical values of parameters such as amounts or conditions are to be understood as modified in all instances by the term "about" whether or not "about" actually appears before the numerical value so modified. "About" indicates that the value provided can vary from the exact numerical value by some minor amount. Approximately or reasonably close to the stated value; nearly. If the imprecision provided by "about" is not otherwise understood in the art to have this ordinary meaning, then "about" as used in the present document indicates at least a variation that can be produced by the ordinary methods of measuring and using such parameters. For example, "about" can include a variation smaller than or equal to 5%, alternatively smaller than or equal to 4%, alternatively smaller than or equal to 3%, alternatively smaller than or equal to 2%, alternatively smaller than or equal to 1%, alternatively smaller than or equal to 0.5%, and in certain aspects, alternatively smaller than or equal to 0.1%.
[0045] In addition, the disclosure of ranges includes all values and further divisions of ranges within the entire ranges disclosed, including the endpoints and subranges given for the ranges.
[0046] Embodiments of the present document will be described more particularly below by way of examples. It is to be noted that the embodiments of the present document are not limited only to these examples.
[0047] Embodiments
[0048] In this embodiment, as shown in Figure 1 a thermal management battery pack, characterized in that, comprising: power module 1, processor 2, drive module 3 and Peltier module 4, power module 1 connects processor 2 and Peltier module 4, for providing current to processor 2 and Peltier module 4, processor 2 is used for receiving input signal, and generating adjustment signal according to input signal, drive module 3 connects power module 1 and Peltier module 4, the input end of drive module 3 is connected with processor 2, for receiving adjustment signal, and adjusting the current direction of Peltier module 4 according to adjustment signal, Peltier module 4 is used for switching heat absorption or heat release to the battery cell according to the current direction.
[0049] Through the above setting, processor 2 generates adjustment signal according to input signal, and transmits to drive module 3, so that drive module 3 changes the current direction of Peltier module 4 according to adjustment signal, and switches the heat absorption and heat release state of Peltier module 4 to the battery cell.
[0050] In some embodiments, the driving module 3 comprises a plurality of switching elements connected to the output of the processor 2 for receiving the adjustment signal and adjusting the switching state thereof according to the adjustment signal.
[0051] Specifically, the driving module 3 comprises a first switching element 31, a second switching element 32, a third switching element 33 and a fourth switching element 34. The first end of the first switching element 31 is connected to the positive pole of the power module 1, the second end of the first switching element 31 is connected to the first end of the Peltier module 4, the first end of the second switching element 32 is connected to the second end of the Peltier module 4, the second end of the second switching element 32 is grounded, the first end of the third switching element 33 is connected to the negative pole of the power module 1, the second end of the third switching element 33 is connected to the second end of the Peltier module 4, the first end of the fourth switching element 34 is connected to the first end of the Peltier module 4, and the second end of the fourth switching element 34 is grounded. The third end of each of the first switching element 31, the second switching element 32, the third switching element 33 and the fourth switching element 34 is connected to the processor 2 and configured to receive the adjustment signal sent by the processor and adjust the switching state thereof according to the adjustment signal.
[0052] Through the above arrangement, the processor 2 adjusts the switching state of the switching elements so that the switching state of the first switching element 31 and the second switching element 32 is consistent, the switching state of the third switching element 33 and the fourth switching element 34 is consistent and different from that of the first and second switching elements. By switching the switching state of the switching elements, the current direction of the Peltier module 4 can be changed, and thus the heat dissipation and heat absorption of the Peltier module 4 to the battery can be switched.
[0053] In some embodiments, when the first switching element 31 and the second switching element 32 are turned on and the third switching element 33 and the fourth switching element 34 are turned off, the current flows from the first end to the second end of the Peltier module 4, and the Peltier module 4 absorbs heat from the battery. When the first switching element 31 and the second switching element 32 are turned off and the third switching element 33 and the fourth switching element 34 are turned on, the current flows from the second end to the first end of the Peltier module 4, and the Peltier module 4 dissipates heat from the battery.
[0054] In some other embodiments, when the first switching element 31 and the second switching element 32 are turned on and the third switching element 33 and the fourth switching element 34 are turned off, the current flows from the second end to the first end of the Peltier module 4, and the Peltier module 4 dissipates heat from the battery. When the first switching element 31 and the second switching element 32 are turned off and the third switching element 33 and the fourth switching element 34 are turned on, the current flows from the first end to the second end of the Peltier module 4, and the Peltier module 4 absorbs heat from the battery.
[0055] In the embodiment, the Peltier module 4 comprises a plurality of Peltier elements, the Peltier elements are connected in series, the first end of the Peltier elements connected in series is the first end of the Peltier module 4, and the last end of the Peltier elements connected in series is the second end of the Peltier module 4.
[0056] In the embodiment, the utility model further comprises an energy recovery module 5, which is used for converting the heat energy absorbed by the Peltier module 4 when the Peltier module 4 absorbs heat from the battery cell into electrical energy and storing the electrical energy, and the energy recovery module 5 is connected with the Peltier module 4 and used for providing electrical energy for the Peltier module 4.
[0057] In other embodiments, the energy recovery module 5 is connected with the power module 1, and the energy recovery module 5 can also supply power to the processing module 21.
[0058] In the embodiment, the utility model further comprises a receiver 6 and a temperature sensor, wherein the temperature sensor is used for detecting the temperature of the battery cell and generating a temperature signal, the temperature signal is connected with the input end of the receiver 6 and used for sending the generated temperature signal to the receiver 6, the input end of the receiver 6 is connected with the temperature sensor, and the output end is connected with the processor 2 and used for generating an input signal according to the received temperature signal and sending the input signal to the processor 2.
[0059] Through the above arrangement, the temperature sensor and the Peltier element are linked, the system can detect the temperature of the battery in real time, and the temperature of the battery can be adjusted in the best working range in time according to the temperature of the battery, so that local overcooling or overheating is avoided.
[0060] In the embodiment, the utility model further comprises an output module 7, the output module 7 is connected with the processor 2, and the processor 2 is configured to generate an alarm signal according to the input signal and send the alarm signal to the output module 7; the output module 7 is connected with an alarm module and used for sending the alarm signal to the alarm module after receiving the alarm signal, so as to realize the alarm function. The alarm module comprises a plurality of alarm devices. Specifically, the alarm device can be an LED warning lamp or a buzzer. Through the LED warning lamp or the buzzer, the user is prompted about the abnormal situation such as overheating or failure of the device, so as to realize the alarm function.
[0061] In other embodiments, the utility model further comprises a power-off module, the input end of the power-off module is connected with the output module 7, and the power-off module is configured to disconnect the external power supply of the battery cell after receiving the alarm signal, so as to realize the function of cutting off the power supply of the battery cell and closing the battery in time when the temperature of the battery is abnormal.
[0062] In some embodiments, the processor 2 is connected to the receiver 6 at the input end and to the BMS at the output end, and is configured to generate the cell data signal according to the input signal and send the cell data signal to the BMS through the output module 7 so that the BMS processes and analyzes the cell data related data. Specifically, the output signal can be transmitted to the main control system through the CAN bus or other communication protocols to provide data analysis or comprehensive energy management.
[0063] In some embodiments, the processor 2 includes a processing module 21 and a PWM module 22, the input end of the processing module 21 is used to receive the input signal, and the voltage signal used to realize various functions is generated according to the input signal, the output end of the processing module 21 is connected to the PWM module 22, and the voltage signal is sent to the PWM module 22, the input end of the PWM module 22 is connected to the processing module 21, and the PWM signal is generated by receiving the voltage signal, and the pulse width modulation is realized.
[0064] In the above arrangement, the processing module 21 can be selected as CPU or MCU, the CPU is mainly used for the system requiring strong computing power and complex operation, and the MCU is suitable for embedded system and real-time control task, both have advantages and are suitable for different application scenarios.
[0065] It should be pointed out that the above only for the preferred embodiments of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application, should be included in the protection scope of the present application.
Claims
1. A battery thermal management system, characterized by, The application relates to a power module, a processor, a driving module and a Peltier module. The power module is connected with the processor and the Peltier module, and is used for providing current for the processor and the Peltier module. The processor is used for receiving an input signal and generating an adjusting signal according to the input signal. The driving module is connected with the power module and the Peltier module, and an input end of the driving module is connected with the processor and is used for receiving the adjusting signal and adjusting the current direction of the Peltier module according to the adjusting signal. The Peltier module is used for switching heat absorption or heat release of a battery according to the current direction. The driving module comprises at least one switch element, the switch element is connected with an output end of the processor and is used for receiving the adjusting signal and adjusting the switch state according to the adjusting signal.
2. The battery thermal management system of claim 1, wherein, The driving module comprises a first switch element, a second switch element, a third switch element and a fourth switch element.
3. The battery thermal management system of claim 2, wherein, A first end of the first switch element is connected with a positive pole of the power module, and a second end of the first switch element is connected with a first end of the Peltier module. A first end of the second switch element is connected with a second end of the Peltier module, and a second end of the second switch element is grounded. A first end of the third switch element is connected with a negative pole of the power module, and a second end of the third switch element is connected with the second end of the Peltier module. A first end of the fourth switch element is connected with the first end of the Peltier module, and a second end of the fourth switch element is grounded. Third ends of the first switch element, the second switch element, the third switch element and the fourth switch element are connected with the processor, are configured to receive the adjusting signal sent by the processor, and adjust the switch state according to the adjusting signal. The Peltier module comprises at least one Peltier element, the Peltier elements are connected in series, a first end of the Peltier elements connected in series is the first end of the Peltier module, and a last end of the Peltier elements connected in series is the second end of the Peltier module.
4. The battery thermal management system of claim 3, wherein, The application further comprises an energy recovery module, the energy recovery module is connected with the Peltier module, is used for converting heat energy absorbed by the battery into electric energy and storing the electric energy, and provides electric energy for the Peltier module.
5. The battery thermal management system of claim 1, wherein, The application further comprises a receiver and a temperature sensor.
6. The battery thermal management system of claim 1, wherein, The temperature sensor is connected with an input end of the receiver, is used for detecting the temperature of the battery, generating a temperature signal, and sending the temperature signal to the receiver. An output end of the receiver is connected with the processor, and is used for generating an input signal according to the temperature signal and sending the input signal to the processor. The application further comprises an output module, the output module is connected with the processor.
7. The battery thermal management system of claim 6, wherein, An input end of the processor is connected with the receiver, and an output end of the processor is connected with the output module, and the processor is configured to generate an alarm signal according to the input signal and send the alarm signal to the output module. An output end of the output module is connected with an alarm module, and the output module is used for receiving the alarm signal and sending the alarm signal to the alarm module. The application further comprises a power-off module, an input end of the power-off module is connected with the output module, and the power-off module is configured to receive the alarm signal and cut off the external power supply of the battery.
8. The battery thermal management system of claim 7, wherein, 9. The battery thermal management system of claim 8, wherein, The processor is connected with the receiver at an input end and connected with the BMS at an output end, and is configured to generate a cell data signal according to an input signal and send the cell data to the BMS through the output module.
10. The battery thermal management system of claim 9, wherein, The processor comprises a processing module and a PWM module, and the processing module is configured to generate a voltage signal for realizing various functions according to an input signal. The output end of the processing module is connected with the PWM module, and the voltage signal is sent to the PWM module. The input end of the PWM module is connected with the processing module, and the voltage signal is received to generate a PWM signal.