Solar storage battery sensing temperature control self-heating system

Abstract

The utility model relates to the technical field of solar storage battery temperature control, in particular to a solar storage battery sensing temperature control self-heating system which comprises a protection box, a heating load module is arranged in the protection box, a storage battery is placed in the heating load module, and the storage battery is arranged in the protection box. A pulse generation and control module electrically connected with the heating load module is arranged at one end of the outer side wall of the protection box, and a temperature collection and feedback module is arranged in the middle of the side wall of the heating load module. The pulse generation and control module is combined with the PWM controller, so that the dynamic adjustment of the pulse frequency and the duty ratio is realized, the heating power can be accurately controlled according to the real-time temperature feedback, the energy consumption is obviously reduced, and the system adaptability is improved; a grid frame structure consisting of transverse and longitudinal PTC heating sheets is adopted, and a silica gel heat diffusion layer (the heat conductivity coefficient is greater than or equal to 3W / m.K) is combined, so that rapid and uniform transfer of heat is ensured.

Description

Technical Field

[0001] This utility model relates to the field of solar battery temperature control technology, specifically a solar battery temperature sensing and self-heating system. Background Technology

[0002] Solar batteries are prone to reduced charging and discharging efficiency, capacity decay, and even failure in low-temperature environments, severely limiting their application in cold regions. Current battery heating solutions often employ constant power heating or simple temperature control switches, which have the following drawbacks: First, the heating power is fixed and cannot be dynamically adjusted according to ambient temperature and the actual state of the battery, resulting in high energy consumption and poor adaptability. Second, traditional resistance wire heating is prone to localized overheating, causing thermal stress damage, while uneven heat diffusion may lead to insufficient heating in "cold zones," affecting overall performance. Third, the lack of real-time temperature feedback and intelligent protection mechanisms makes it difficult to cut off heating in time when temperatures are abnormal or current is overloaded, posing safety hazards. Furthermore, existing heating devices have complex structures, are inconvenient to install and maintain, and are difficult to modularize for quick assembly and disassembly.

[0003] Therefore, we propose a solar battery temperature sensing and self-heating system to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses a solar battery temperature sensing and self-heating system. The technical solution adopted includes a protective box, in which a heating load module is set up, and a battery is placed inside the heating load module. A pulse generation and control module electrically connected to the heating load module is set at one end of the outer wall of the protective box. A temperature acquisition and feedback module is set in the middle of the side wall of the heating load module. The heating load module is composed of a horizontal mounting rod and a vertical mounting rod that are snapped together. The horizontal mounting rod is composed of multiple horizontal blocks arranged in an array. The upper surface of the horizontal block is provided with protrusions, and the lower surface of the horizontal block has grooves corresponding to the protrusions. The vertical mounting rod is a rectangular rod that is snapped together with the grooves on the lower surface of the horizontal block. The pulse generation and control module and the heating load module achieve low-temperature heating of the battery by dynamically adjusting the pulse frequency and duty cycle.

[0005] As a preferred embodiment of this utility model, the pulse generation and control module includes a TGBT, a gate driver, and a PWM controller. The temperature acquisition and feedback module includes an NTC thermistor, a heat insulation frame, and a mounting frame. The heat insulation frame is located in the middle of the outer wall of the heating load module. The NTC thermistor is fixedly installed inside the heat insulation frame through the mounting frame, and the monitoring terminal of the NTC thermistor abuts against the battery casing.

[0006] As a preferred embodiment of this utility model, both the transverse mounting rod and the longitudinal mounting rod are made of PTC heating elements.

[0007] As a preferred embodiment of this utility model, the driving frequency of the IGBT is 1Hz-10kHz, and the duty cycle adjustment range is 5%-90%.

[0008] As a preferred embodiment of this utility model, both the transverse mounting rod and the longitudinal mounting rod are covered with a silicone thermal diffusion layer with a thermal conductivity ≥3W / m·K.

[0009] The beneficial effects of this utility model are:

[0010] 1. Intelligent dynamic adjustment, energy saving and high efficiency: By combining the pulse generation and control module with the PWM controller, the pulse frequency and duty cycle can be dynamically adjusted. The heating power can be accurately controlled according to real-time temperature feedback, which significantly reduces energy consumption and improves system adaptability.

[0011] 2. Uniform heating to avoid heat damage: The grid frame structure composed of horizontal and vertical PTC heating elements, combined with a silicone heat diffusion layer (thermal conductivity ≥3W / m·K), ensures rapid and uniform heat transfer, eliminates local overheating or cold spots, and extends battery life.

[0012] 3. Multiple safety protection mechanisms: The integrated NTC thermistor monitors the temperature in real time, and together with the current sensor and fuse, it automatically cuts off the heating when the temperature exceeds the limit or the current is abnormal, ensuring the safe operation of the system.

[0013] 4. Modular design, easy installation: The horizontal and vertical mounting rods adopt a snap-fit ​​splicing structure, which supports quick assembly and disassembly, facilitates maintenance, and is compatible with different specifications of batteries, with strong expandability;

[0014] 5. High reliability and durability: IGBT has a wide driving frequency range (1Hz-10kHz) and high withstand voltage. Combined with the self-current limiting characteristics of PTC material, it ensures long-term stable operation of the system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0017] Figure 2This is a schematic diagram of the installation state of the battery of this utility model;

[0018] Figure 3 This is a schematic diagram of the heating load module structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the horizontal mounting rod structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the longitudinal mounting rod structure of this utility model.

[0021] In the diagram: 1. Protective box, 2. Pulse generation and control module, 3. Heating load module, 4. Temperature acquisition and feedback module, 5. Battery, 6. Heat insulation frame, 7. Mounting frame, 8. NTC thermistor, 9. Horizontal mounting rod, 10. Vertical mounting rod, 11. Horizontal block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 5 As shown, this utility model discloses a solar battery temperature sensing and self-heating system. The technical solution adopted includes a protective box 1, a heating load module 3 is set inside the protective box 1, and a battery 5 is placed inside the heating load module 3. A pulse generation and control module 2 electrically connected to the heating load module 3 is set at one end of the outer wall of the protective box 1. A temperature acquisition and feedback module 4 is set in the middle of the side wall of the heating load module 3. The heating load module 3 is composed of a horizontal mounting rod 9 and a vertical mounting rod 10 that are snapped together. The horizontal mounting rod 9 is composed of multiple horizontal blocks 11 arrayed together. The upper surface of the horizontal block 11 is provided with protrusions and the lower surface of the horizontal block 11 is provided with grooves corresponding to the protrusions. The vertical mounting rod 10 is a rectangular rod that is snapped together with the grooves on the lower surface of the horizontal block 11. The pulse generation and control module 2 and the heating load module 3 achieve low-temperature heating of the battery 5 by dynamically adjusting the pulse frequency and duty cycle.

[0024] Multiple horizontal blocks 11 are spliced ​​together to form a horizontal mounting rod 9. Then, multiple horizontal mounting rods 9 and vertical mounting rods 10 are snapped together to form a grid frame, namely the heating load module 3. The battery 5 is then placed inside the heating load module 3, with the outer casing of the battery 5 abutting against the outer walls of the horizontal mounting rods 9 and the vertical mounting rods 10. At the same time, the monitoring end of the temperature acquisition and feedback module 4 also abuts against the outer casing of the battery 5, realizing real-time monitoring and feedback of the temperature of the battery 5 casing. Capacitive energy is generated by the pulse generation and control module 2 and released to the heating load module 3 in the form of pulses. The heating load module 3 achieves low-temperature treatment of the battery 5 casing.

[0025] As a preferred technical solution of this utility model, the pulse generation and control module 2 includes a TGBT, a gate driver and a PWM controller, and the temperature acquisition and feedback module 4 includes an NTC thermistor 8, a heat insulation frame 6 and a mounting frame 7. The heat insulation frame 6 is located in the middle of the outer wall of the heating load module 3. The NTC thermistor 8 is fixedly installed inside the heat insulation frame 6 through the mounting frame 7 and the monitoring end of the NTC thermistor 8 abuts against the casing of the battery 5.

[0026] The PWM controller sends a PWM signal to the gate driver, which amplifies the control signal to ensure rapid switching of the IGBT. Then, the IGBT switches on and off at high speed, releasing the capacitor energy to the heating load module 3 in the form of pulses. At the same time, the NTC thermistor 8 monitors the temperature of the battery 5 casing in real time and feeds the data back to the PWM controller. The PWM controller adjusts the PWM duty cycle according to the real-time situation to control the heating power. When the NTC thermistor 8 detects that the temperature exceeds the limit or the current sensor detects an abnormal current, the PWM controller shuts down the PWM output or triggers the fuse to achieve the purpose of safety protection.

[0027] The instantaneous heat calculation formula for heating load module 3 is: power = voltage² × duty cycle / resistance.

[0028] As a preferred technical solution of this utility model, both the horizontal mounting rod 9 and the vertical mounting rod 10 are made of PTC heating elements. By using PTC heating elements, the heating load module 3 can have an automatic current limiting function.

[0029] As a preferred technical solution of this utility model, the driving frequency of the IGBT is 1Hz-10kHz, and the duty cycle adjustment range is 5%-90%. The IGBT is suitable for high-frequency, high-voltage / high-current switching and control pulse switching, and has the advantages of fast switching speed and high voltage resistance.

[0030] As a preferred technical solution of this utility model, the outer surfaces of the horizontal mounting rod 9 and the vertical mounting rod 10 are both covered with a silicone thermal diffusion layer with a thermal conductivity ≥3W / m·K. Through the silicone thermal diffusion layer with a thermal conductivity ≥3W / m·K, heat can be quickly transferred from the heating element to the entire load surface, avoiding local overheating of "hot spots" or insufficient heating of "cold spots" caused by uneven thermal resistance, so as to ensure that the surface temperature of the heated object is uniform.

[0031] The working principle of this utility model is as follows: Multiple horizontal blocks 11 are spliced ​​together to form a horizontal mounting rod 9. Then, the multiple horizontal mounting rods 9 and the longitudinal mounting rods 10 are snap-fitted together to form a grid frame, i.e., the heating load module 3. The battery 5 is then placed inside the heating load module 3, with the battery casing abutting against the outer walls of the horizontal mounting rods 9 and the longitudinal mounting rods 10. Simultaneously, the monitoring end of the temperature acquisition and feedback module 4 also abuts against the battery casing, enabling real-time monitoring and feedback of the battery casing temperature. A PWM signal is sent to the gate driver via the PWM controller, and then... The control signal is amplified to ensure rapid switching of the IGBT. Then, the IGBT switches on and off at high speed, releasing the capacitor energy in the form of pulses to the heating load module 3. The heating load module 3 achieves low-temperature treatment of the battery 5's casing. At the same time, the NTC thermistor 8 monitors the temperature of the battery 5's casing in real time and feeds the data back to the PWM controller. The PWM controller adjusts the PWM duty cycle according to the real-time situation to control the heating power. When the NTC thermistor 8 detects that the temperature exceeds the limit or the current sensor detects an abnormal current, the PWM controller shuts down the PWM output or triggers the fuse to achieve the purpose of safety protection.

[0032] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0033] Components not described in detail in this article are existing technologies.

[0034] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A solar battery temperature sensing and self-heating system, comprising a protective box (1), characterized in that, The protective box (1) is equipped with a heating load module (3), and a storage battery (5) is placed inside the heating load module (3). A pulse generation and control module (2) electrically connected to the heating load module (3) is provided at one end of the outer wall of the protective box (1). A temperature acquisition and feedback module (4) is provided in the middle of the side wall of the heating load module (3). The heating load module (3) is composed of a horizontal mounting rod (9) and a vertical mounting rod (10) that are snapped together. The horizontal mounting rod (9) is composed of multiple horizontal blocks (11) arranged in an array. The upper surface of the horizontal block (11) is provided with protrusions and the lower surface of the horizontal block (11) is provided with grooves corresponding to the protrusions. The vertical mounting rod (10) is a rectangular rod that is snapped together with the grooves on the lower surface of the horizontal block (11). The pulse generation and control module (2) and the heating load module (3) achieve low-temperature heating of the storage battery (5) by dynamically adjusting the pulse frequency and duty cycle.

2. The solar battery temperature sensing and self-heating system according to claim 1, characterized in that: The pulse generation and control module (2) includes a TGBT, a gate driver and a PWM controller. The temperature acquisition and feedback module (4) includes an NTC thermistor (8), a heat insulation frame (6) and a mounting frame (7). The heat insulation frame (6) is located in the middle of the outer wall of the heating load module (3). The NTC thermistor (8) is fixedly installed inside the heat insulation frame (6) through the mounting frame (7) and the monitoring terminal of the NTC thermistor (8) abuts against the casing of the battery (5).

3. The solar battery temperature sensing and self-heating system according to claim 1, characterized in that: Both the transverse mounting rod (9) and the longitudinal mounting rod (10) are made of PTC heating elements.

4. The solar battery temperature sensing and self-heating system according to claim 1, characterized in that: The driving frequency of the IGBT is 1Hz-10kHz, and the duty cycle adjustment range is 5%-90%.

5. The solar battery temperature sensing and self-heating system according to claim 1, characterized in that: Both the transverse mounting rod (9) and the longitudinal mounting rod (10) are covered with a silicone thermal diffusion layer with a thermal conductivity ≥3W / m·K.

Images