CN114942391A

CN114942391A - Energy storage device health state assessment method

Info

Publication number: CN114942391A
Application number: CN202210162345.1A
Authority: CN
Inventors: 王绿叶
Original assignee: Suzhou Pingfeng Technology Co ltd; Jilin University
Current assignee: Suzhou Pingfeng Technology Co ltd; Jilin University
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-08-26

Abstract

The invention relates to the technical field of battery management, in particular to a method for evaluating the health state of an energy storage device. The method comprises the following steps: step S1, collecting the operation parameters of the battery, and further constructing a diagnosis input sequence S; step S2, constructing a health state evaluation model and processing a diagnosis input sequence S; and step S3, outputting the state of health of the battery. Through the above steps S1-S3, the state of health of the battery can be preferably evaluated based on the state of health evaluation model, so that the advantage of the algorithm can be preferably utilized to realize the better evaluation of the state of health of the battery.

Description

Energy storage device health state assessment method

Technical Field

The invention relates to the technical field of battery management, in particular to a method for evaluating the health state of an energy storage device.

Background

The power resource is a relatively short resource, and the typical peak-valley characteristics are presented because the use of the power resource is closely related to the laws of human life and production. Although the measures for charging different peak-valley electricity utilization rates are provided at home at present, the measures are only a lateral encouragement measure and cannot solve the problem of peak-to-peak electricity utilization better. Fill millet energy storage system through the peak clipping, it can carry out the energy storage at power consumption wave trough time section, supplies power to consumer at power consumption wave crest time period, and then can slow down supply pressure, reduces user's power consumption cost. The core components of the peak clipping and valley filling energy storage device comprise a battery assembly, and the operation condition of the battery assembly directly influences the operation of the whole peak clipping and valley filling energy storage system, so that the operation condition of the battery assembly needs to be monitored and managed. In addition, in consideration of comprehensive utilization of energy, management and monitoring of multi-path power supply of the battery assembly are also required.

Disclosure of Invention

The present invention provides a method for energy storage device health assessment that overcomes some or all of the deficiencies of the prior art.

The invention relates to a method for evaluating the health state of an energy storage device, which comprises the following steps:

step S1, collecting the operation parameters of the battery, and further constructing a diagnosis input sequence S;

step S2, constructing a health state evaluation model and processing a diagnosis input sequence S;

and step S3, outputting the state of health of the battery.

Through the above steps S1-S3, the evaluation of the state of health of the battery based on the state of health evaluation model can be preferably realized, so that the advantage of the algorithm can be preferably utilized to realize the better evaluation of the state of health of the battery.

Preferably, step S1 specifically includes the steps of,

step S11, obtaining the working state M, the working voltage U, the working current I, the working duration T and the internal temperature K of the battery ^o And an ambient temperature K;

in this step, when the operating state of the battery is a discharge state, M is 1, and when the operating state of the battery is a charge state, M is 0;

step S12, working voltage U, working current I, working time T and internal temperature K ^o And carrying out dimensionless treatment on the environment temperature K to further obtain dimensionless working voltage U ^* Operating current I ^* And a working time length T ^* Internal temperature K ^o* And the ambient temperature K ^* ；

Step S13, constructing a diagnostic input sequence S, S ═ M, U ^* ,I ^* ,T ^* ,K ^o* ,K ^* ]。

Through the step S11, the operating state, the operating voltage, the operating current, the operating time, the internal temperature, and the environmental temperature of the battery can be preferably considered, so that the correlation sequence between the internal temperature, the battery operating state, and the external environment can be preferably constructed. By steps S12 and S13, the elimination of the dimension can be preferably achieved, so that the processing of the health status evaluation model can be preferably facilitated.

Preferably, in step S12,

wherein, U _max 、I _max 、T _max 、K ^o _max And K _max Respectively, maximum operating voltage, maximum operating current, maximum operating duration, maximum internal temperature, and maximum ambient temperature.

Through the above, the obtaining of the dimensionless parameter can be preferably realized.

Preferably, the state of health estimation model in step S2 is constructed by the steps of,

step S21, constructing a health state evaluation model;

and step S22, constructing a sample set P and training the health state evaluation model.

Through the above, the health status evaluation model can be preferably constructed.

Preferably, in step S21, a health status evaluation model is constructed based on the neural network, the health status evaluation model has an input layer, a full-link layer and an output layer, the input layer is used for inputting a diagnosis input sequence S, the full-link layer is used for processing the diagnosis input sequence S, and the output layer is used for receiving a processing result of the full-link layer;

wherein the fully-connected layer can have N layers connected in sequence, and the output of the former fully-connected layer is used as the input of the latter fully-connected layer; for the ith fully-connected layer in the N layers, outputting the sequence y _i And input sequence x _i There is a relationship between the presence of,

y _i ＝ω _i x _i +b _i ；

wherein, ω is _i Weight terms for the i-th fully-connected layer, b _i The bias term of the i-th layer full connection layer, the weight term omega _i And bias term b _i Through step S22.

Through the above, the construction of the health status evaluation model can be preferably realized by means of the existing mature neural network algorithm.

Preferably, in step S22, the sample set P has a plurality of sample sequences, and the sample sequences are collected from batteries with different working states and different cycle numbers; each sample sequence is labeled with the capacity fade-out Q of the battery,

for the jth sample, its label Q _i The calculation formula is as follows,

Q _ia the actual state of the battery corresponding to the jth sampleFull charge quantity at full charge, Q _ic The nominal full charge of the battery corresponding to the jth sample;

for the j-th sample, the sample sequence is,

M _j 、

and

respectively representing the working state of the j sample, the dimensionless working voltage, the dimensionless working current, the dimensionless working time, the dimensionless internal temperature and the dimensionless ambient temperature.

Through the above, the sample database can be preferably obtained, and particularly, because the capacity attenuation value Q is adopted as the label, the final output result of the health state evaluation model can be a specific numerical value instead of the classified data output by the classifier, so that the subsequent threshold judgment and early warning processing can be better facilitated.

Drawings

Fig. 1 is a system block diagram schematically illustrating a hybrid power supply system according to embodiment 1; fig. 2 is a system framework diagram of an energy storage battery thermal management system according to embodiment 1; FIG. 3 is a schematic structural view of a battery storage device according to embodiment 1; fig. 4 is a schematic sectional view of a battery storage device according to embodiment 1; FIG. 5 is a schematic view of the structure of a coil pipe in example 1; FIG. 6 is a schematic configuration diagram of a drive mechanism in embodiment 1; FIG. 7 is a schematic sectional view of a drive mechanism in embodiment 1; FIG. 8 is a schematic view of the structure of a cover plate in embodiment 1; FIG. 9 is a schematic structural view of an impeller in embodiment 1; FIG. 10 is a schematic view of the structure of a mounting block in embodiment 1; FIG. 11 is a schematic half-cut view of a drive mechanism in embodiment 1; fig. 12 is an enlarged schematic view of portion a of fig. 11; FIG. 13 is a schematic structural view of a slider in embodiment 1; fig. 14 is a schematic structural view of a stopper in embodiment 1. Fig. 15 is a schematic view of a photovoltaic module according to example 1; fig. 16 is a schematic view of a heat dissipating skeleton in example 1; FIG. 17 is a schematic view of the first piston chamber and the first electric telescopic rod in embodiment 1; FIG. 18 is a partial sectional view of the first piston chamber and the first electric telescopic bar in embodiment 1; FIG. 19 is a schematic view of a first housing and a second electric telescopic bar in embodiment 1; FIG. 20 is a schematic view of a second housing and a second electric telescopic bar in embodiment 1; fig. 21 is a partial sectional view of the first housing and the second electric telescopic rod of embodiment 1; FIG. 22 is a partial sectional view of the first housing and the second electric telescopic bar of embodiment 1; FIG. 23 is a schematic view of a third housing and a third electric telescopic bar in embodiment 1; FIG. 24 is a schematic view of a fourth housing and a third electric telescopic bar in the embodiment 1; FIG. 25 is a partial sectional view of the third housing and the third electric telescopic rod of the embodiment 1; FIG. 26 is a partial sectional view of a third housing and a third electric telescopic rod according to embodiment 1; FIG. 27 is a schematic view of a mount, a rotary ring, a fan and a spring in embodiment 1; FIG. 28 is a schematic view of a check valve in embodiment 1; FIG. 29 is a sectional view of the check valve in embodiment 1; fig. 30 is a partial sectional view of a heat-dissipating skeleton in embodiment 1; FIG. 31 is an enlarged view of a portion of FIG. 30 at A; fig. 32 is a partial enlarged view at B in fig. 30.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

Example 1

With reference to fig. 1, the present embodiment constructs a hybrid power supply system for a battery assembly, where the hybrid power supply system includes the battery assembly and a photovoltaic assembly, and the battery assembly can obtain electric energy required for charging from a power grid and the photovoltaic assembly through corresponding power supply circuits. It is understood that the hybrid power supply circuit is a well-established technology, and therefore, the description thereof is omitted.

The following solutions are provided in this embodiment for the problems of the hybrid power supply system, such as monitoring the state of health of the battery assembly, monitoring the temperature of the photovoltaic assembly, and the like.

Considering that when the operating temperature of the battery assembly is low, the electrolyte in the battery assembly moves slowly, so that the transfer activity of lithium ions between the positive electrode and the negative electrode is influenced, and the problems of reduced discharge performance and the like are caused; when the operating temperature of the battery assembly is high, irreversible damage can be caused to the internal isolation membrane, and even the battery can be scrapped or a fire accident can be caused.

One contribution of this embodiment over the prior art is to provide a thermal management system for energy storage batteries, as shown in fig. 2-14.

The energy storage battery thermal management system of the embodiment comprises a battery storage device 2100 and a constant temperature system, wherein the battery storage device 2100 is used for placing a battery assembly, and the constant temperature system is used for providing a constant temperature medium; a battery pack placing cavity 2110 for placing a battery pack is formed in the battery storing device 2100, and a temperature rising channel and a temperature lowering channel which are communicated with the battery pack placing cavity 2110 are formed on the side wall of the battery storing device 2100; a first heat transfer assembly 2121 is arranged at the temperature rising channel, and a second heat transfer assembly 2122 is arranged at the temperature reducing channel; the first and second

heat transfer members

2121 and 2122 respectively form a first flow passage and a second flow passage for flowing a constant temperature medium therein, the first heat transfer member 2121 is configured to transfer heat of the constant temperature medium in the first flow passage to the battery pack placement chamber 2110, and the second heat transfer member 2122 is configured to transfer heat of the battery pack placement chamber 2110 to the constant temperature medium in the second flow passage; the battery pack placing cavity 2110 is also internally provided with a temperature sensor for detecting the internal temperature of the battery pack placing cavity, and the temperature sensor is used for sending detected data to a processing unit; a first water inlet 2221 and a first water outlet 2131 are respectively formed at two ends of the first flow passage, a second water inlet 2222 and a second water outlet 2132 are respectively formed at two ends of the second flow passage, and the first water inlet 2221, the second water inlet 2222, the first water outlet 2131 and the second water outlet 2132 are respectively connected to corresponding interfaces of the constant temperature system through different three-way electromagnetic valves; the processing unit is used for controlling the action of the corresponding three-way electromagnetic valve 2140 to realize the circulation of the constant-temperature medium between the first flow channel and the constant-temperature system when the internal temperature of the battery pack placing cavity 2110 is lower than a set threshold value; the processing unit is also used for controlling the action of the corresponding three-way solenoid valve 2140 to realize the circulation of the thermostatic medium between the second flow channel and the thermostatic system when the internal temperature of the battery pack placing cavity 2110 is higher than a set threshold value.

Through the structure in this embodiment, when the temperature sensor detects that the temperature inside the battery pack placement cavity 2110 is lower than the set threshold, that is, the temperature of the battery pack is too low, the processing unit controls the corresponding three-way solenoid valve 2140 to be turned on, so that the constant temperature medium with a higher temperature circulates between the first flow channel and the constant temperature system, further, when the constant temperature medium flows into the first flow channel, the first heat transfer component 2121 functions, that is, in the process that the constant temperature medium flows from the first water inlet 2221 to the first water outlet 2131, the first heat transfer component 2121 can transfer the heat of the constant temperature medium in the first flow channel to the inside of the battery pack placement cavity 2110, that is, the heat of the constant temperature medium in the first flow channel is transferred to the inside of the battery pack placement cavity 2110 along the warming channel, so that warming of the battery pack is preferably achieved; when the temperature sensor detects that the temperature inside the battery pack placing cavity 2110 is higher than a set threshold value, that is, the temperature of the battery pack is too high, the processing unit controls the corresponding three-way solenoid valve 2140 to be turned on, so that the constant temperature medium with a lower temperature circulates between the second flow passage and the constant temperature system, further, when the constant temperature medium flows into the second flow passage, the second heat transfer assembly 2122 acts, that is, in the process that the constant temperature medium flows from the second water inlet 2222 to the second water outlet 2132, the second heat transfer assembly 2122 can transfer heat in the battery pack placing cavity 2110 to the constant temperature medium in the second flow passage, that is, heat in the battery pack placing cavity 2110 is transferred to the constant temperature medium in the second flow passage along the temperature reduction passage, so that the temperature reduction of the battery pack is preferably realized; in summary, the present embodiment can reasonably utilize the constant temperature system to control the temperature of the battery assembly, thereby better realizing that the battery assembly works at a normal temperature, and avoiding the influence of extreme weather on the service life of the battery assembly; in addition, when the battery pack is operated at normal temperature, the electrical conversion rate of the battery pack can be kept at a high level, so that the loss of chemical substances inside the battery pack is reduced, and the service life of the battery pack is prolonged.

As shown in fig. 3 and 4, in the present embodiment, the battery storage apparatus 2100 includes a battery case 2210, the battery case 2210 is covered in a housing 2220, an outer wall of the battery case 2210 is spaced apart from an inner wall of the housing 2220 to form a cavity 2211 therebetween, and a temperature sensor is disposed in the cavity 2211; the first heat transfer assembly 2121 and the second heat transfer assembly 2122 have the same structure, the first heat transfer assembly 2121 includes a coil 2230 disposed at the housing 2220, an outer end of the coil 2230 is a first water outlet 2131 and is communicated with a side wall of the housing 2220, an inner end of the coil 2230 is provided with a driving mechanism 2240, the driving mechanism 2240 includes a mounting block 2310 disposed coaxially with the coil 2230 and communicated with the coil 2230, a mounting cavity 2610 is disposed in the mounting block 2310, an impeller disposed coaxially with the mounting cavity 2610 is rotatably disposed in the mounting cavity 2610, a cover plate 2320 is disposed at an opening of the mounting cavity 2610, and the first water inlet 2221 is disposed on the cover plate 2320; the impeller is provided with a rotating shaft 2470 extending out of the mounting block 2310, a fan 2260 is provided at one end of the rotating shaft 2470 extending out of the mounting block 2310, and the coil 2230 is coaxially arranged outside the fan 2260.

Through the arrangement of the coil 2230, the mounting block 2310, the cover plate 2320, the impeller and the fan 2260 in the embodiment, when the temperature sensor detects that the temperature in the battery pack placing cavity 2110 is too low, the constant temperature medium with a lower temperature flows into the mounting block 2310 from the first water inlet 2221, so that the constant temperature medium drives the impeller to rotate, that is, the impeller drives the rotating shaft 2470 to rotate, so that the fan 2260 can rotate, the fan 2260 can transfer the heat of the constant temperature medium flowing into the first flow passage into the temperature rising channel, the temperature of the battery pack rises to a set threshold, and the processing unit controls the corresponding three-way electromagnetic valve 2140 to be turned off; similarly, when the temperature of the battery assembly is too high, the fan 2260 can transfer the heat inside the battery assembly placing cavity 2110 to the constant temperature medium in the second flow channel from the cooling channel, so that the temperature of the battery assembly is reduced to a set threshold value, and the processing unit controls the corresponding three-way electromagnetic valve 2140 to be cut off; as described above, it is further preferable that the battery pack is maintained at a normal temperature, so that the electrical conversion rate of the battery pack can be maintained at a high level, and thus the service life of the battery pack is prolonged.

Referring to fig. 6 to 11, in the present embodiment, the impeller includes an annular plate 2420 having an end surface flush with an opening end surface of the installation cavity 2610, a circular plate 2430 having an end surface in sliding contact with a bottom wall of the installation cavity 2610, and blades 2440 disposed between the annular plate 2420 and the circular plate 2430 and evenly spaced along the circumferential direction of the circular plate 2430, wherein the blades 2440 are arc-shaped pieces; the cover plate 2320 comprises a blocking block for blocking the installation cavity 2610 and a cylindrical block 2410 extending into the middle of the impeller, two sides of the blades 2440 can abut against the side wall of the installation cavity 2610 and the side wall of the cylindrical block 2410 respectively, the impeller, the outer wall of the cylindrical block 2410 and the side wall of the installation cavity 2610 are mutually slid and sealed to form a driving cavity 2630 formed by adjacent blades 2440, the blocking block is provided with a water injection cavity 2330 extending into the cylindrical block 2410, a first water inlet 2221 is an opening end of the water injection cavity 2330, the cylindrical block 2410 is provided with a first flow guide opening 2331 which is obliquely arranged and is communicated with the water injection cavity 2330 and the driving cavity 2630, the installation block 2310 is provided with a second flow guide opening 2311 communicated with the driving cavity 2630 and the inner end of the coil pipe 2230, and the arrangement positions of the first flow guide opening 2331 and the second flow guide opening 2311 are arranged oppositely; the first water inlet 2221, the water injection cavity 2330, the first diversion port 2331, the second diversion port 2311, the coil 2230 and the first water outlet 2131 together form a first flow channel.

Through the arrangement of the blades 2440, the cover plate 2320, the driving chamber 2630, the first flow guide opening 2331 and the second flow guide opening 2311 in the embodiment, a constant-temperature medium is injected into the water injection chamber 2330 from the first water inlet 2221, and then flows to the driving chamber 2630 from the first flow guide opening 2331, the first flow guide opening is obliquely arranged, so that the driving chamber 2630 is subjected to thrust in the circumferential direction, that is, the impeller is positioned in the mounting chamber 2610 to rotate, and then the impeller drives the rotating shaft 2470 to rotate, thereby realizing the rotation of the fan 2260; during the rotation of the impeller, the driving cavity 2630 rotates to the second diversion port 2311, the constant temperature medium in the driving cavity 2630 can flow from the second diversion port 2311 to the coil 2230, and then flow into the constant temperature system from the first water outlet 2131 along the coil 2230, so that the constant temperature medium circulates between the first flow channel and the constant temperature system, as described above, the flow rate of the constant temperature medium flowing into the first flow channel is controlled, that is, the rotation speed of the impeller is controlled, and the rotation speed of the fan 2260 is further controlled, so that the rapid temperature rise or rapid temperature drop of the battery assembly is realized.

In this embodiment, a protrusion is protruded from the middle of one side of the mounting block 2310 away from the cover plate 2320, the protrusion is provided with a rotating cavity 2620 communicated with the mounting cavity 2610, a rotating block 2450 extending into the rotating cavity 2620 is arranged on the circular plate 2430, the rotating shaft 2470 is coaxially mounted on the rotating block 2450, and a bearing 2460 is arranged between the side wall of the rotating block 2450 and the inner wall of the rotating cavity 2620.

Through the arrangement of the rotating cavity 2620, the rotating block 2450 and the bearing 2460 in the present embodiment, the rotating block 2450 is preferably located in the rotating cavity 2620 to rotate, that is, the impeller is preferably convenient to drive the fan 2260 to rotate.

Referring to fig. 11 to 14, in this embodiment, sealing mechanisms for slidably sealing the blade 2440 are respectively disposed on the inner wall of the mounting block 2310 and the outer wall of the cylindrical block 2410, a sliding cavity 2510 is disposed in the inner wall of the mounting block 2310 or the outer wall of the cylindrical block 2410, a slidable slider 2710 is disposed in the sliding cavity 2510, the end surface of the slider 2710 facing the open end of the sliding cavity 2510 is arc-shaped, when the slider 2710 moves towards the open end of the sliding cavity 2510 for a maximum stroke, an edge of one side wall of the slider 2710 coincides with an edge of a corresponding side wall of the open end of the sliding cavity 2510, an edge of the other side wall extends out of the sliding cavity 2510, and two sides of the blade 2440 can abut against the side wall of the slider 2710 extending out of the sliding cavity 2710 to form a sealing surface.

Through the arrangement of the sealing mechanism in this embodiment, when the slider 2710 moves towards the open end of the sliding cavity 2510 for the maximum stroke, the side wall of the blade 2440 abuts against the side wall of the slider 2710 extending out of the sliding cavity 2510, and the side wall of the blade 2440 abutting against the slider 2710 forms a sealing surface, so that before the impeller rotates, the slider 2710 can keep the driving cavity 2630 blocked, so that when a constant-temperature medium is injected into the water injection cavity 2330, the constant-temperature medium flows into the driving cavity 2630 from the first flow guide opening 2331, the driving cavity 2630 corresponding to the first flow guide opening 2331 can be filled with the constant-temperature medium, the impeller is driven to rotate, when the impeller starts to rotate, the side wall of the blade 2440 can move along the arc-shaped surface of the slider 2710, and when the impeller rotates at a high speed, the slider 2710 keeps retracting into the sliding cavity 2510 under the action of the rotation of the impeller, and therefore the rotation of the impeller is not influenced;

the sealing mechanism aims to ensure that the constant-temperature medium drives the impeller to rotate, so that the situation that the constant-temperature medium directly flows to the second flow guide port 2311 along a gap due to the existence of the gap between the blade 2440 and the cylindrical block 2410 and the installation cavity 2610 is avoided, in addition, the sliding block 2710 extends out of the sliding cavity 2510, so that the sliding block 2710 can inhibit the impeller from reversely rotating, namely, the impeller is ensured to rotate unidirectionally in the installation cavity 2610, therefore, the rotation direction of the impeller can be controlled, when the battery assembly is subjected to temperature rise operation, the wind direction of the fan 2260 faces towards the cavity 2211, namely, the temperature of the battery assembly is quickly raised to a set threshold value, and when the battery assembly is subjected to temperature drop operation, the wind direction of the fan 2260 is opposite to the cavity 2211, namely, the temperature of the battery assembly is quickly lowered to the set threshold value.

In this embodiment, a first spring 2720 for keeping the slider 2710 moving toward the opening of the sliding cavity 2510 is disposed between the slider 2710 and the bottom wall of the sliding cavity 2510.

Through the arrangement of the first spring 2720 in the embodiment, before the impeller rotates, the slider 2710 is kept at the maximum stroke towards the open end of the sliding cavity 2510 under the action of the first spring 2720, namely, the side wall of the slider 2710 and the side wall of the blade 2440 are sealed.

In this embodiment, a sliding chute 2520 is correspondingly disposed on the side wall of the sliding cavity 2510, a strip-shaped groove 2810 is penetratingly disposed on the slider 2710, two limiting blocks 2910 capable of respectively extending out of openings at two ends of the strip-shaped groove 2810 are disposed in the strip-shaped groove 2810, a second spring 2920 is disposed between the two limiting blocks 2910, and an end of each limiting block 2910 extending out of the strip-shaped groove 2810 extends into the corresponding sliding chute 2520.

Through the arrangement of the sliding groove 2520, the strip-shaped groove 2810, the limiting block 2910 and the second spring 2920 in the embodiment, the limiting block 2910 is located in the sliding groove to slide, that is, the stability that the sliding block 2710 is located in the sliding cavity 2510 to slide is ensured, wherein due to the arrangement of the second spring 2920, an operator extrudes the limiting block 2910 into the strip-shaped groove 2810, and then the sliding block 2710 is installed in the sliding cavity 2510, which is preferably convenient.

In this embodiment, there are at least two sets of sealing mechanisms on the inner wall of the mounting block 2310 and the outer wall of the cylindrical block 2410.

Through the setting of sealing mechanism quantity in this embodiment, when its aim at impeller rotated arbitrary number of turns, sealing mechanism had two sets of at least and made the lateral wall of slider 2710 form sealedly to the lateral wall of blade 2440, and then guaranteed the rotation of thermostatic medium drive impeller.

In this embodiment, both sides of the housing 2220 are provided with the filter screen 2150, and the filter screen 2150 is provided with a water injection port communicating with the first water inlet 2221 or the second water inlet 2222.

By the arrangement of the filter screen 2150 in this embodiment, the first heat transfer assembly 2121 and the second heat transfer assembly 2122 are preferably prevented from being damaged by external force, and air openings of the temperature rising passage and the temperature lowering passage are provided.

In this embodiment, the heat dissipation fins 2250 are uniformly disposed in the cavity 2211, and the heat dissipation fins 2250 are spaced apart from each other to form a temperature increasing channel or a temperature decreasing channel.

Through the arrangement of the heat dissipation fins 2250 in this embodiment, it is preferably achieved that the temperature inside the battery assembly placing cavity 2110 is transmitted to the heat dissipation fins 2250, that is, the first heat transfer assembly 2121 or the second heat transfer assembly 2122 is convenient to perform a temperature increasing or decreasing operation on the inside of the battery assembly placing cavity 2110, so as to achieve a constant temperature control on the battery assembly.

When the energy storage battery thermal management system of this embodiment is used specifically, when the temperature sensor detects that the temperature inside the battery pack placement cavity 2110 is lower than a set threshold, that is, the temperature of the battery pack is too low, the processing unit controls the corresponding three-way electromagnetic valve 2140 to conduct, so that the thermostatic medium of higher temperature circulates between the first flow path and the thermostatic system, and further, the thermostatic medium of higher temperature is injected into the water injection chamber 2330 from the first water inlet 2221, and further, from the first diversion opening 2331 to the drive chamber 2630, the first diversion opening 2331 is disposed obliquely, the drive chamber 2630 is forced, i.e., the impeller is rotationally located within the mounting chamber 2610, the impeller drives the rotating shaft 2470 to rotate, so that the fan 2260 rotates, heat flowing into the constant-temperature medium in the first flow channel is rapidly transferred to the radiating fins 2250, and the temperature of the battery assembly is raised to a set threshold;

when the temperature sensor detects that the temperature inside the battery pack placing cavity 2110 is higher than a set threshold, that is, the temperature of the battery pack is too high, the processing unit controls the corresponding three-way solenoid valve 2140 to be turned on, so that the constant-temperature medium with a lower temperature circulates between the second flow channel and the constant-temperature system, further, the constant-temperature medium with a lower temperature is injected into the water injection cavity 2330 from the second water inlet 2222, and further flows to the drive cavity 2630 from the first flow guide opening 2331, the first flow guide opening 2331 is obliquely arranged, so that the drive cavity 2630 is thrust, that is, the impeller is rotated and positioned in the mounting cavity 2610, and further the impeller drives the rotating shaft 2470 to rotate, so that the fan 2260 rotates, and thus, heat on the heat dissipation fin 2250 is rapidly transferred to the constant-temperature medium flowing into the second flow channel, and further, the temperature of the battery pack is cooled to the set threshold;

in conclusion, the constant temperature system can be reasonably utilized to control the temperature of the battery assembly, so that the battery assembly can be kept at a normal temperature to work better, and the influence of extreme weather on the service life of the battery assembly is avoided; in addition, the battery pack operates at normal temperature, and the electrical conversion rate of the battery pack can be kept at a high level, so that the loss of chemical substances inside the battery pack is reduced, and the service life of the battery pack is prolonged.

The constant temperature system in this embodiment may further include, for example, a device for providing a constant temperature medium, and the device for providing a constant temperature medium may be, for example, an existing temperature control system (such as a water heater, etc.), so as to achieve better acquisition of a circulating constant temperature medium, and thus, the energy storage battery thermal management system in this embodiment has stronger applicability.

In addition, although there is a device for cooling the photovoltaic module from the outside, the temperature of the photovoltaic module is generated inside the photovoltaic module, and the high temperature can be transmitted to the heat dissipation cooling device through the photovoltaic module.

Considering that the conversion efficiency and the service life of the photovoltaic module are affected by the overhigh temperature inside the photovoltaic module, another contribution of the embodiment to the prior art is to provide a hybrid power supply device, in particular a technical scheme for controlling the temperature of the photovoltaic module from the inside.

As shown in fig. 15-32, the present embodiment provides a hybrid power supply device, which includes a photovoltaic module 1100, the photovoltaic module 1100 is formed by encapsulating a photovoltaic glass 1110, a first photovoltaic film 1120, a battery piece 1130, a second photovoltaic film 1140 and a photovoltaic back plate 1150;

the photovoltaic module 1100 further includes a heat dissipation framework 1160 disposed between the second photovoltaic adhesive film 1140 and the photovoltaic backsheet 1150;

the heat dissipation framework 1160 comprises a plurality of transverse heat dissipation tubes which are arranged in parallel at intervals and communicated with the outside of the photovoltaic module 1100 and a plurality of longitudinal heat dissipation tubes which are arranged in parallel at intervals and communicated with the outside of the photovoltaic module 1100, wherein the transverse heat dissipation tubes are communicated with the longitudinal heat dissipation tubes.

In this embodiment, the hybrid power supply device includes an energy storage device and a photovoltaic module 1100 electrically connected to the energy storage device; the energy storage device is electrically connected with the power grid and the electric equipment respectively; the grid and photovoltaic module 1100 is used to provide electrical energy to an energy storage device, which is used to provide electrical energy to electrical equipment;

through the arrangement of the heat dissipation framework 1160 in the embodiment, the heat dissipation framework 1160 can directly transfer heat from the inside of the photovoltaic module 1100 to the outside of the photovoltaic module 1100, so that high temperature generated in the photovoltaic module 1100 can be prevented from being transferred inside the photovoltaic module 1100, and therefore the reduction of working efficiency of the photovoltaic module 1100 caused by the high temperature and the reduction of the service life of the photovoltaic module 1100 can be effectively avoided;

wherein through the structure of heat dissipation skeleton 1160, can be through in the leading-in heat dissipation skeleton 1160 of heat absorbing medium to can directly cool down from photovoltaic module 1100's inside, the cooling effect is obvious, and under heat dissipation skeleton 1160's isolated, can not cause the pollution to photovoltaic module 1100 from outside leading-in heat absorbing medium and lead to photovoltaic module 1100 to damage, can play the effect of protection to photovoltaic module 1100's inside.

In this embodiment, the horizontal heat dissipation tubes include a first heat dissipation tube 1210, a second heat dissipation tube 1220 and a third heat dissipation tube 1230 that are sequentially arranged, the vertical heat dissipation tube includes a fourth heat dissipation tube 1240, a fifth heat dissipation tube 1250 and a sixth heat dissipation tube 1260 that are sequentially arranged, and a first piston chamber 1270 that is communicated with both the second heat dissipation tube 1220 and the fifth heat dissipation tube 1250 is arranged at the intersection of the second heat dissipation tube 1220 and the fifth heat dissipation tube 1250; the first piston chamber 1270 is internally provided with a first electric telescopic rod 1271 which is connected with the photovoltaic module 1100 and is used for matching with the first piston chamber 1270 to realize the absorption and discharge of the first piston chamber 1270 to the air flow.

In this embodiment, the photovoltaic module 1100 can also directly provide electric energy for the first electric telescopic rod 1271;

by the provision of the first piston chamber 1270 in this embodiment; when the photovoltaic module 1100 starts to work and generates electric energy, the photovoltaic module 1100 provides electric energy for the first electric telescopic rod 1271, so that the first electric telescopic rod 1271 starts to work; the driving shaft of the first telescopic electric rod 1271 is hermetically connected with the first piston chamber 1270, so that when the output shaft of the first telescopic electric rod 1271 moves towards the inside of the first piston chamber 1270, the air flow in the first piston chamber 1270 is extruded out of the first piston chamber 1270 under the extrusion of the output shaft of the first telescopic electric rod 1271, and when the output shaft of the first telescopic electric rod 1271 moves towards the outside of the first piston chamber 1270, the air flow is sucked inwards by the first piston chamber 1270; thereby through the take in of first piston chamber 1270 to the air current and discharge and promote the air current in the heat dissipation skeleton 1160 and can flow better, when first piston chamber 1270 inhales inwards, the external low temperature air of photovoltaic module 1100 can get into horizontal cooling tube and vertical cooling tube and absorb the inside heat of photovoltaic module 1100, when first piston chamber 1270 outwards exhausts, high temperature air in the heat dissipation skeleton 1160 can be followed and transversely dispelled the heat pipe and discharge in the vertical cooling tube to reach the inside effect of cooling down of photovoltaic module 1100.

In this embodiment, two second piston cavities 1710, which are both communicated with the first heat dissipation tube 1210 and respectively communicated with the fourth heat dissipation tube 1240 and the sixth heat dissipation tube 1260, are disposed on the first heat dissipation tube 1210, and the two second piston cavities 1710 are respectively disposed at the intersections of the first heat dissipation tube 1210 and the fourth heat dissipation tube 1240 and the first heat dissipation tube 1210 and the sixth heat dissipation tube 1260;

two third piston cavities 1a10 which are communicated with the third radiating pipe 1230 and respectively communicated with the fourth radiating pipe 1240 and the sixth radiating pipe 1260 are arranged on the third radiating pipe 1230, and the two third piston cavities 1a10 are respectively arranged at the intersection of the third radiating pipe 1230 and the fourth radiating pipe 1240 and the intersection of the third radiating pipe 1230 and the sixth radiating pipe 1260;

a second electric telescopic rod 1280 and a third electric telescopic rod 1290 which are connected with the photovoltaic module 1100 and used for realizing the absorption and discharge of airflow by the second piston cavity 1710 and the third piston cavity 1a10 are respectively arranged in the second piston cavity 1710 and the third piston cavity 1a 10; a first shell 1281 is arranged at the intersection of the first radiating pipe 1210 and the fourth radiating pipe 1240, a second shell 1282 is arranged at the intersection of the first radiating pipe 1210 and the sixth radiating pipe 1260, a second piston cavity 1710 is formed inside the first shell 1281 and the second shell 1282, the second electric telescopic rod 1280 is arranged at the bottom of the first shell 1281 and the second shell 1282, and an output shaft of the second electric telescopic rod 1280 extends into the second piston cavity 1710 and can move along the extension direction of the second piston cavity 1710;

the first shell 1281 and the second shell 1282 are respectively provided with two first ventilation holes 1720 and two second ventilation holes 1510, the first ventilation holes 1720 are arranged on the side walls of the first shell 1281 and the second shell 1282 close to the second radiating pipe 1220 and the fifth radiating pipe 1250, and the second ventilation holes 1510 are arranged on the side walls of the first shell 1281 and the second shell 1282 far away from the second radiating pipe 1220 and the fifth radiating pipe 1250; the two first ventilation holes 1720 are respectively communicated with the second piston cavity 1710, the second radiating pipe 1220, the second piston cavity 1710 and the fifth radiating pipe 1250; two second air holes 1510 located on the first housing 1281 respectively communicate the second piston cavity 1710 with the first heat dissipation tube 1210, and the second piston cavity 1710 with the fourth heat dissipation tube 1240; the two second air holes 1510 on the second shell 1282 are respectively communicated with the second piston cavity 1710, the first radiating pipe 1210, the second piston cavity 1710 and the sixth radiating pipe 1260;

the first air hole 1720 and the second air hole 1510 are respectively provided with a first valve used for being matched with the second electric telescopic rod 1280 to seal the first air hole 1720 and the second air hole 1510, the first air hole 1720 is opened and the second air hole 1510 is closed when the second electric telescopic rod 1280 sucks air in the second piston cavity 1710, and the first air hole 1720 is closed and the second air hole 1510 is opened when the second electric telescopic rod 1280 exhausts air in the second piston cavity 1710;

a third shell 1291 is arranged at the intersection of the third radiating pipe 1230 and the fourth radiating pipe 1240, a fourth shell 1292 is arranged at the intersection of the third radiating pipe 1230 and the sixth radiating pipe 1260, a third piston cavity 1a10 is formed inside the third shell 1291 and the fourth shell 1292, a third electric telescopic rod 1290 is arranged at the bottom of the third shell 1291 and the fourth shell 1292, and an output shaft of the third electric telescopic rod 1290 extends into the third piston cavity 1a10 and can move along the extending direction of the third piston cavity 1a 10;

the third casing 1291 and the fourth casing 1292 are respectively provided with two third ventilation holes 1a20 and two fourth ventilation holes 1910, the third ventilation holes 1a20 are formed in the side walls of the third casing 1291 and the fourth casing 1292 close to the second heat dissipation tube 1220 and the fifth heat dissipation tube 1250, and the fourth ventilation holes 1910 are formed in the side walls of the third casing 1291 and the fourth casing 1292 far from the second heat dissipation tube 1220 and the fifth heat dissipation tube 1250; the two third ventilation holes 1a20 are respectively communicated with the third piston cavity 1a10, the second heat dissipation pipe 1220, the third piston cavity 1a10 and the fifth heat dissipation pipe 1250; the two fourth ventilation holes 1910 on the third housing 1291 are respectively communicated with the third piston cavity 1a10, the third heat dissipation pipe 1230, the third piston cavity 1a10 and the fourth heat dissipation pipe 1240; two fourth air holes 1910 on the fourth housing 1292 respectively communicate the third piston cavity 1a10 with the third radiating tube 1230 and the third piston cavity 1a10 with the sixth radiating tube 1260;

the third air hole 1a20 and the fourth air hole 1910 are respectively provided with a second valve used for being matched with a third electric telescopic rod 1290 to seal the third air hole 1a20 and the fourth air hole 1910, the third air hole 1a20 is opened and the fourth air hole 1910 is closed when the third electric telescopic rod 1290 sucks air in the third piston cavity 1a10, and the third air hole 1a20 is closed and the fourth air hole 1910 is opened when the third electric telescopic rod 1290 exhausts air in the third piston cavity 1a 10.

In this embodiment, the photovoltaic module 1100 provides electric energy to the second electric telescopic rod 1280 and the third electric telescopic rod 1290; the first electric telescopic rod 1271 is opposite to the motion states of the second electric telescopic rod 1280 and the third electric telescopic rod 1290;

when the output shaft of the first electric telescopic rod 1271 moves towards the inside of the first piston chamber 1270, the output shaft of the second electric telescopic rod 1280 and the output shaft of the third electric telescopic rod 1290 respectively move towards the outside of the second piston chamber 1710 and the outside of the third piston chamber 1a10, namely, when the first piston chamber 1270 is exhausted, the second piston chamber 1710 and the third piston chamber 1a10 suck air; when the output shaft of the first electric telescopic rod 1271 moves towards the outside of the first piston chamber 1270, the output shaft of the second electric telescopic rod 1280 and the output shaft of the third electric telescopic rod 1290 move towards the inside of the second piston chamber 1710 and the inside of the third piston chamber 1a10 respectively, that is, when the first piston chamber 1270 sucks air, the second piston chamber 1710 and the third piston chamber 1a10 exhaust air;

when the second piston cavity 1710 inhales air, that is, the output shaft of the second electric telescopic rod 1280 moves towards the outside of the second piston cavity 1710, at this time, the first air holes 1720 on the first shell 1281 and the second shell 1282 are opened under the action of the first valve, and meanwhile, the second air holes 1510 on the first shell 1281 and the second shell 1282 are closed under the action of the first valve, so that the second piston cavity 1710 can absorb hot air in the heat dissipation framework 1160 through the first air holes 1720; when the second piston cavity 1710 exhausts, namely the output shaft of the second electric telescopic rod 1280 moves towards the second piston cavity 1710, at this time, the first air holes 1720 on the first shell 1281 and the second shell 1282 are closed under the action of the first valve, and meanwhile, the second air holes 1510 on the first shell 1281 and the second shell 1282 are opened under the action of the first valve, so that the second piston cavity 1710 can discharge the hot air absorbed in the second piston cavity 1710 outwards through the second air holes 1510, and the hot air can be discharged out of the photovoltaic module 1100;

when the third piston cavity 1a10 inhales, that is, the output shaft of the third electric telescopic rod 1290 moves towards the outside of the third piston cavity 1a10, at this time, the third air vent 1a20 of the third casing 1291 and the fourth casing 1292 is opened by the second valve, and the fourth air vent 1910 of the third casing 1291 and the fourth casing 1292 is closed by the second valve, so that the third piston cavity 1a10 can absorb the hot air in the heat dissipation framework 1160 through the third air vent 1a 20; when the third piston cavity 1a10 is exhausted, that is, the output shaft of the third electric telescopic rod 1290 moves towards the third piston cavity 1a10, at this time, the third air vent 1a20 of the third casing 1291 and the fourth casing 1292 is closed under the action of the second valve, and the fourth air vent 1910 of the third casing 1291 and the fourth casing 1292 is opened under the action of the second valve, so that the third piston cavity 1a10 can exhaust the hot air absorbed in the third piston cavity 1a10 through the fourth air vent 1910, and thus the hot air can be exhausted out of the photovoltaic module 1100;

the purpose of the above configuration is that, when the first piston chamber 1270 sucks the cold air into the heat dissipation frame 1160 through the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250, the cold air absorbs the heat generated inside the photovoltaic module 1100 in the heat dissipation frame 1160, and at this time, the second piston chamber 1710 and the third piston chamber 1a10 discharge the hot air absorbed from the heat dissipation frame 1160 to the outside; when the first piston chamber 1270 discharges the hot air to the outside, the second piston chamber 1710 and the third piston chamber 1a10 absorb the hot air discharged from the first piston chamber 1270 at this time; this is repeated so that the heat generated inside the photovoltaic module 1100 is absorbed and dissipated by the cooperation of the first piston chamber 1270 and the second piston chamber 1710.

In this embodiment, the first valve includes a first housing 1281 and a second housing 1282, and a first rotating groove 1520 is disposed below the first ventilation hole 1720; a first driving plate 1521, one end of which extends into the second piston cavity 1710 and is matched with the second electric telescopic rod 1280, and the other end of which extends out of the first shell 1281 and the second shell 1282, is rotatably arranged in the first rotating groove 1520; a first driven plate 1522 with one end hinged to the other end of the first driving plate 1521 is arranged outside each of the first shell 1281 and the second shell 1282; a first plugging plate 1523 is hinged to the other end of the first driven plate 1522; two first limiting blocks 1524 which are provided for the first blocking plate 1523 to extend into and extend in the vertical direction and have L-shaped sections are symmetrically arranged on the first shell 1281 and the second shell 1282; the first blocking plate 1523 can move along the extending direction of the first limiting block 1524 and block the first air hole 1720;

the second valve includes a third housing 1291 and a fourth housing 1292, and a second rotary groove 1920 is arranged below the third ventilation hole 1a 20; a second driving plate 1921 having one end extending into the third piston chamber 1a10 to be engaged with the third electric telescopic rod 1290 and the other end extending out of the third housing 1291 and the fourth housing 1292 is rotatably disposed in the second rotating groove 1920; a second driven plate 1922 with one end hinged to the other end of the second driving plate 1921 is arranged outside each of the third housing 1291 and the fourth housing 1292; the other end of the second driven plate 1922 is hinged with a third blocking plate 1923; two second limiting blocks 1924, which are provided with a third blocking plate 1923 extending in the vertical direction and have an L-shaped cross section, are symmetrically disposed on the third casing 1291 and the fourth casing 1292; the third blocking plate 1923 can move along the extending direction of the second limiting block 1924 and block the third vent holes 1a 20;

a first extrusion groove 1730 for one end of the first driving plate 1521 to extend into is arranged on an output shaft of the second electric telescopic rod 1280, the first extrusion groove 1730 moves towards the outside of the second piston cavity 1710 and is used for extruding the first driving plate 1521 to drive the first driving plate 1521 to rotate so as to plug the first air vent 1720 by the first plugging plate 1523, and the first extrusion groove 1730 moves towards the inside of the second piston cavity 1710 and is used for extruding the first driving plate 1521 to drive the first driving plate 1521 to rotate so as to open the first air vent 1720 by the first plugging plate 1523;

a third extrusion groove 1a30, into which one end of the second driving plate 1921 extends, is arranged on an output shaft of the third electric telescopic rod 1290, the third extrusion groove 1a30 moves towards the outside of the third piston cavity 1a10 and is used for extruding the second driving plate 1921 to drive the second driving plate 1921 to rotate so as to plug the third air hole 1a20 by the third blocking plate 1923, and the third extrusion groove 1a30 moves towards the inside of the third piston cavity 1a10 and is used for extruding the second driving plate 1921 to drive the second driving plate 1921 to rotate so as to open the third air hole 1a20 by the third blocking plate 1923;

a first movable groove 1740 extending in the vertical direction and communicated with the second vent 1510 is arranged in the side walls of the first shell 1281 and the second shell 1282; the upper end and the lower end of the first movable groove 1740 are both communicated with the second piston cavity 1710; a second plugging plate 1741 which can move along the extending direction of the first movable groove 1740 is arranged in the first movable groove 1740; a fifth air hole 1742 communicated with the second air hole 1510 is arranged on the second plugging plate 1741; the second plugging plate 1741 is used for being matched with the second electric telescopic rod 1280 to plug the second air hole 1510;

a second movable groove 1a40 extending in a vertical direction and communicating with the fourth vent 1910 is formed in the side walls of the third casing 1291 and the fourth casing 1292; the upper end and the lower end of the second movable groove 1a40 are both communicated with a third piston cavity 1a 10; a fourth blocking plate 1a41 which can move along the extending direction of the second movable groove 1a40 is arranged in the second movable groove 1a 40; the fourth plugging plate 1a41 is provided with a sixth vent hole 1a42 communicated with the fourth vent hole 1910; the fourth plugging plate 1a41 is used for being matched with the third electric telescopic rod 1290 to plug the fourth air hole 1910;

a first extrusion plate 1743 which passes through the first movable groove 1740 and extends into the second piston cavity 1710 is arranged at the upper end of the second plugging plate 1741, and a second extrusion plate 1810 which passes through the first movable groove 1740 and extends into the second piston cavity 1710 is arranged at the lower end of the second plugging plate 1741; a second extrusion groove 1820 for the second extrusion plate 1810 to extend into is arranged on an output shaft of the second electric telescopic rod 1280; the first extrusion plate 1743 is used for extruding with the end of the output shaft of the second electric telescopic rod 1280 to realize the plugging of the second air vent 1510 by the second plugging plate 1741, and the second extrusion plate 1810 is used for extruding with the second extrusion groove 1820 to realize the communication between the second air vent 1510 and the third air vent 1a 20;

the upper end of the fourth blocking plate 1a41 is provided with a third extrusion plate 1a43 which passes through the second movable groove 1a40 and extends into the third piston cavity 1a10, and the lower end of the fourth blocking plate 1a41 is provided with a fourth extrusion plate 1b10 which passes through the second movable groove 1a40 and extends into the third piston cavity 1a 10; a fourth extrusion groove 1b20 for a fourth extrusion plate 1b10 to extend into is arranged on an output shaft of the third electric telescopic rod 1290; the third extrusion plate 1a43 is used for extruding with the end of the output shaft of the third electric telescopic rod 1290 to close the fourth vent hole 1910 by the fourth closing plate 1a41, and the fourth extrusion plate 1b10 is used for extruding with the fourth extrusion groove 1b20 to communicate the fourth vent hole 1910 with the sixth vent hole 1a 42.

By the structure of the first valve in this embodiment, when the output shaft of the second electric telescopic rod 1280 moves towards the inside of the second piston cavity 1710, which is the exhaust stage, at this time, the first squeezing groove 1730 moves towards the inside of the second piston cavity 1710; in the process of movement of the first extrusion groove 1730, the side wall of the first extrusion groove 1730 close to the outer end of the second piston cavity 1710 contacts one end of the first driving plate 1521 and extrudes one end of the first driving plate 1521 along with the continuous movement of the first extrusion groove 1730, so that the first driving plate 1521 rotates, and under the driving of the other end of the first driving plate 1521, the first driven plate 1522 drives the first blocking plate 1523 to move in the direction opposite to the moving direction of the output shaft of the second electric telescopic rod 1280, so that the first air hole 1720 is opened; in the process of movement of the output shaft of the second electric telescopic rod 1280, the end of the output shaft of the second electric telescopic rod 1280 contacts with the first squeezing plate 1743 and squeezes the first squeezing plate 1743 along with the continuous movement of the output shaft of the second electric telescopic rod 1280, so that the first squeezing plate 1743 moves towards the inner end of the second piston cavity 1710, the second plugging plate 1741 moves towards the inner end of the second piston cavity 1710, the third vent hole 1a20 moves away from the second vent hole 1510, and the second vent hole 1510 is plugged under the action of the second plugging plate 1741;

when the output shaft of the second electric telescopic rod 1280 moves towards the outside of the second piston cavity 1710, namely, during the air suction stage, the first extrusion groove 1730 moves towards the outside of the second piston cavity 1710 at the moment; in the process of movement of the first extrusion groove 1730, the side wall of the first extrusion groove 1730, which is far away from the outer end of the second piston cavity 1710, contacts with one end of the first active plate 1521 and extrudes one end of the first active plate 1521 along with the continuous movement of the first extrusion groove 1730, so that the first active plate 1521 rotates, the first plugging plate 1523 moves reversely, and the first air vent 1720 is plugged; at this time, the second extrusion groove 1820 moves towards the outside of the second piston cavity 1710, and the side wall of the second extrusion groove 1820, which is away from the outer end of the second piston cavity 1710, contacts the second extrusion plate 1810 and extrudes the second extrusion plate 1810 along with the continuous movement of the second extrusion groove 1820, so that the second sealing plate 1741 moves reversely, the third vent hole 1a20 moves towards the second vent hole 1510, the second vent hole 1510 is communicated with the third vent hole 1a20, and the second vent hole 1510 is opened;

by the configuration of the second valve in this embodiment, when the output shaft of the third electric telescopic rod 1290 moves towards the inside of the third piston chamber 1a10, i.e. during the air exhaust phase, the third pressing groove 1a30 moves towards the inside of the third piston chamber 1a 10; in the process of movement of the third extrusion groove 1a30, the side wall of the third extrusion groove 1a30, which is close to the outer end of the third piston cavity 1a10, will contact one end of the second driving plate 1921 and extrude one end of the second driving plate 1921 with the continuous movement of the third extrusion groove 1a30, so that the second driving plate 1921 rotates, and under the driving of the other end of the second driving plate 1921, the second driven plate 1922 drives the third blocking plate 1923 to move in the direction opposite to the moving direction of the output shaft of the third electric telescopic rod 1290, so that the third vent hole 1a20 is opened; during the movement of the output shaft of the third electric telescopic rod 1290, the end of the output shaft of the third electric telescopic rod 1290 contacts the third extrusion plate 1a43 and extrudes the third extrusion plate 1a43 with the continued movement of the output shaft of the third electric telescopic rod 1290, so that the third extrusion plate 1a43 moves towards the inner end of the third piston cavity 1a10, and the fourth blocking plate 1a41 moves towards the inner end of the third piston cavity 1a10, so that the sixth vent hole 1a42 moves away from the fourth vent hole 1910, and the fourth vent hole 1910 is blocked by the fourth blocking plate 1a 41;

when the output shaft of the third electric telescopic rod 1290 moves out of the third piston chamber 1a10, i.e. during the air suction phase, the third pressing groove 1a30 moves out of the third piston chamber 1a 10; in the process of the movement of the third extrusion groove 1a30, the side wall of the third extrusion groove 1a30, which is away from the outer end of the third piston cavity 1a10, contacts with one end of the second active plate 1921 and extrudes one end of the second active plate 1921 with the continuous movement of the third extrusion groove 1a30, so that the second active plate 1921 rotates, the third blocking plate 1923 moves reversely, and the third air hole 1a20 is blocked; at this time, the fourth pressing groove 1b20 moves towards the outside of the third piston cavity 1a10, and the side wall of the fourth pressing groove 1b20 away from the outer end of the third piston cavity 1a10 contacts the fourth pressing plate 1b10 and presses the fourth pressing plate 1b10 with the continuous movement of the fourth pressing groove 1b20, so that the fourth blocking plate 1a41 moves in the opposite direction, the sixth vent hole 1a42 moves towards the fourth vent hole 1910, the fourth vent hole 1910 is communicated with the sixth vent hole 1a42, and the opening of the fourth vent hole 1910 is realized.

In this embodiment, the cross sections of the transverse radiating pipe and the longitudinal radiating pipe are both square, and the included angle between the pipe wall and the photovoltaic glass 1110 is 45 degrees; a plurality of mounting seats 1c10 are arranged in the transverse radiating pipe and the longitudinal radiating pipe, a rotating ring 1c20 is rotatably arranged on the inner side wall of the mounting seat 1c10, and a fan 1c30 is arranged on the rotating ring 1c 20;

baffle plates 1e10 are arranged in the transverse radiating pipe and the longitudinal radiating pipe, and through holes 1e11 are arranged on the baffle plates 1e 10; the mounting seat 1c10 can move along the length direction of the transverse radiating pipe and the longitudinal radiating pipe; mount 1c10 is attached to flapper 1e10 by spring 1c40, and spring 1c40 serves to maintain the tendency of mount 1c10 to move away from flapper 1e 10.

In the embodiment, the transverse radiating pipes and the longitudinal radiating pipes are made of glass materials;

through the arrangement of the transverse radiating pipes and the longitudinal radiating pipes in the embodiment, after light is irradiated into the photovoltaic module 1100, the light is refracted under the action of the transverse radiating pipes and the longitudinal radiating pipes, so that the light can be utilized for the second time in the photovoltaic module 1100, and the working efficiency of the photovoltaic module 1100 is improved;

through the arrangement of the fan 1c30, in the processes of air suction and air exhaust of the first piston cavity 1270, the second piston cavity 1710 and the third piston cavity 1a10, the fan 1c30 can rotate due to the flowing of air, so that the flowing of air in the heat dissipation framework 1160 can be better promoted, after cold air enters the heat dissipation framework 1160, the cold air can be uniformly distributed in the heat dissipation framework 1160, heat in the photovoltaic module 1100 can be uniformly absorbed, the phenomenon that the local temperature in the photovoltaic module 1100 is too high is avoided, and the heat dissipation efficiency is improved;

through the structure of the first valve and the second valve, when the first air hole 1720, the second air hole 1510, the third air hole 1a20 and the fourth air hole 1910 are opened and closed, the sizes of the first air hole 1720, the second air hole 1510, the third air hole 1a20 and the fourth air hole 1910 are gradually changed, so that the pressure of air passing through the first piston cavity 1270, the second piston cavity 1710 and the third piston cavity 1a10 is gradually increased when air is sucked and exhausted, the thrust of the air on the fan 1c30 is gradually increased, the rotating speed of the fan 1c30 can be increased, the flow of air inside the heat dissipation framework 1160 is further promoted, the heat dissipation efficiency is improved, the working efficiency of the photovoltaic module 1100 is improved, and the service life of the photovoltaic module 1100 is prolonged;

through the setting of baffle 1e10, spring 1c40, mount pad 1c10 for at the in-process of breathing in and the exhaust of first piston chamber 1270, second piston chamber 1710 and third piston chamber 1a10, fan 1c30 can drive mount pad 1c10 under the promotion of air current and move along the length direction of horizontal cooling tube and vertical cooling tube under the elastic action of spring 1c40, thereby further promote the flow of the interior air of heat dissipation skeleton 1160, improve the radiating efficiency to the inside of photovoltaic module 1100.

In this embodiment, the two ends of the second radiating tube 1220 and the fifth radiating tube 1250 are provided with one-way valves 1d10 for air flow into the second radiating tube 1220 and the fifth radiating tube 1250.

Through the arrangement of the check valve 1d10 in the embodiment, the purpose is that the external low-temperature air can only enter the heat dissipation framework 1160 through the two ends of the second heat dissipation tube 1220 and the fifth heat dissipation tube 1250, and the high-temperature air in the heat dissipation framework 1160 can only be discharged through the second piston cavity 1710 and the third piston cavity 1a10, so that the air can circulate according to a certain route, and the purpose of heat dissipation is achieved;

firstly, low-temperature air is sucked into the heat dissipation framework 1160 by the first piston cavity 1270, when the first piston cavity 1270 exhausts, the one-way valve 1d10 is closed, and at the moment, gas in the heat dissipation framework 1160 diffuses in the heat dissipation framework 1160 under the action of the first piston cavity 1270, so that the low-temperature air is uniformly distributed in the heat dissipation framework 1160 and cannot move to the outside of the heat dissipation framework 1160, the inside of the photovoltaic module 1100 can be better cooled, and the heat dissipation efficiency of the photovoltaic module 1100 is improved.

In view of the monitoring of the state of health of the battery assembly and the fact that the state of health of the battery assembly can be reflected in the amount of heat generated during the operation of the battery assembly, the present embodiment further provides a method for estimating the state of health of an energy storage device,

the method for evaluating the health state of the energy storage device comprises the following steps:

and step S3, outputting the state of health of the battery.

Step S1 in the present embodiment specifically includes the following steps,

step S11, obtaining the working state M, the working voltage U, the working current I, the working time T and the internal temperature K of the battery ^o And an ambient temperature K;

step S12, working voltage U, working current I, working time T and internal temperature K ^o And carrying out dimensionless treatment on the environment temperature K to further obtain dimensionless working voltage U ^* Operating current I ^* Duration of operation T ^* Internal temperature K ^o* And the ambient temperature K ^* ；

In this embodiment, the operating state M, the operating voltage U, the operating current I, the operating duration T, and the internal temperature K ^o Can obtain through current BMS system, operating voltage U and operating current I refer to the instantaneous data of gathering the moment, and operating duration T refers to the battery pack and begins the time of work to the duration under the moment of gathering, and inside temperature K ^o The battery core temperature of the battery assembly can be used as a calorific value evaluation parameter of the battery assembly.

Since the battery pack in this embodiment is disposed in the battery pack placement cavity 2110, the measurement data of the temperature sensor can be directly used as the ambient temperature K ^* 。

In the present embodiment, in step S12,

Through the above, the obtaining of the dimension removing parameters can be preferably realized. Wherein, U _max 、I _max And T _max The rated voltage (distinguishing between the discharged state and the charged state), the rated current (distinguishing between the discharged state and the charged state) of the battery pack and the operating time length, K, obtained by calculating the rated power (distinguishing between the discharged state and the charged state) and the rated capacity of the battery pack can be used ^o _max And K _max Manual settings such as 60 c and 40 c, respectively, can be made empirically.

The state of health estimation model in step S2 of the present embodiment is constructed by the following steps,

step S21, constructing a health state evaluation model;

In step S21 of this embodiment, a health state assessment model is constructed based on a neural network, where the health state assessment model has an input layer, a full connection layer, and an output layer, the input layer is used to input a diagnosis input sequence S, the full connection layer is used to process the diagnosis input sequence S, and the output layer is used to receive a processing result of the full connection layer;

y _i ＝ω _i x _i +b _i ；

wherein, ω is _i Weight terms for the i-th fully-connected layer, b _i A bias term for the i-th fully-connected layer, a weight term omega _i And bias term b _i Through step S22.

In step S22 of this embodiment, the sample set P has a plurality of sample sequences, and the sample sequences are collected from batteries with different working states and different cycle numbers; each sample sequence is labeled with the capacity fade-out Q of the battery,

for the jth sample, its label Q _i The calculation formula is as follows,

Q _ia is the full charge quantity, Q, of the battery corresponding to the jth sample at the actual full charge quantity in the current state _ic The nominal full charge of the battery corresponding to the jth sample;

for the j-th sample, the sample sequence is,

M _j 、

and

respectively representing the working state of the jth sample, the dimensionless working voltage, the dimensionless working current, the dimensionless working time length, the dimensionless internal temperature and the dimensionless environment temperature.

Based on the hybrid power supply system constructed as described above, the present embodiment further provides a battery management system, including:

a temperature detection unit for detecting an operating temperature of the battery;

a temperature control unit for controlling an operation temperature of the battery;

an evaluation unit for evaluating a state of health of the battery;

the early warning unit is used for early warning the health state of the battery; and

the main control unit is used for judging whether the temperature detected by the temperature detection unit exceeds a set temperature threshold value or not and controlling the temperature control unit to act when the running temperature of the battery exceeds the set temperature threshold value; the main control unit is also used for receiving the evaluation result of the evaluation unit and controlling the action of the early warning unit when the evaluation result exceeds the set health threshold value.

Through the method, the control on the operation temperature of the battery and the evaluation and early warning on the health state of the battery can be better realized.

In this embodiment, the temperature control unit may include the battery storage device 2100 and the thermostat system, the temperature detection unit may include the temperature sensor, and the main control unit may include a processing unit for receiving data detected by the temperature sensor; the processing unit is used for controlling the action of the corresponding three-way electromagnetic valve 2140 to realize the circulation of the constant-temperature medium between the first flow channel and the constant-temperature system when the internal temperature of the battery pack placing cavity 2110 is lower than a set threshold value; the processing unit is also used for controlling the action of the corresponding three-way solenoid valve 2140 to realize the circulation of the constant temperature medium between the second flow passage and the constant temperature system when the internal temperature of the battery pack placing cavity 2110 is higher than a set threshold value.

Through the above, the constant temperature control of the operating environment temperature of the battery pack can be better realized, and then the battery pack can be better ensured to work in a better temperature range, so that the service performance and the service life of the battery pack can be better ensured.

In this embodiment, the temperature control unit can further include the heat dissipation framework 1160, the temperature detection unit can further include a photovoltaic temperature sensor disposed at the heat dissipation framework 1160, the photovoltaic temperature sensor is used for detecting the internal temperature of the photovoltaic module 1100, and the main control unit can further include a control module used for receiving data detected by the photovoltaic temperature sensor; the control module is used for controlling the action of the first electric telescopic rod 1271 when the temperature data detected by the photovoltaic temperature sensor exceeds a set photovoltaic module temperature threshold value. Temperature control at the photovoltaic module can be preferably achieved.

In addition, the control module can also be used for controlling the first electric telescopic rod 1271, the second electric telescopic rod 1280 and the third electric telescopic rod 1290 to cooperatively operate when the temperature data detected by the photovoltaic temperature sensor exceeds a set photovoltaic module temperature threshold value. Temperature control at the photovoltaic module can be better achieved.

The evaluation unit of the embodiment comprises a data acquisition module and a processing module, wherein the data acquisition module is used for acquiring the operation parameters of the battery, and the processing module is used for processing the operation parameters of the battery to acquire the health state of the battery. The evaluation of the state of health of the battery can be preferably achieved. In this embodiment, the data acquisition module is used for obtaining the operating parameters of the battery from the temperature sensor and the BMS system.

In addition, the processing module is used for realizing the functions of data input, data processing and data output of the health state evaluation model. The function of the health status evaluation model can be preferably realized.

Meanwhile, the embodiment also provides an application management method of the intelligent network connection energy storage device for the hybrid power supply system, which comprises temperature management and health state management; temperature management includes temperature management of the battery assembly and temperature management of the photovoltaic assembly, and state of health management includes management of the state of health of the battery assembly. Therefore, temperature management and health state management of the battery assembly and temperature management of the photovoltaic assembly can be preferably realized.

In the present embodiment, in the temperature management of the battery pack, the temperature inside the battery storage device 2100 is detected by the temperature sensor, the data detected by the temperature sensor is received by the processing unit, and the processing unit controls the operation of the thermostat system when the data detected by the temperature sensor exceeds a set threshold value, so as to control the thermostat of the battery pack. Temperature management of the battery pack can be preferably achieved.

In the temperature management of the photovoltaic module, the internal temperature of the photovoltaic module 1100 is detected by the photovoltaic temperature sensor, and the data detected by the photovoltaic temperature sensor is received by the control module. When the temperature data detected by the photovoltaic temperature sensor exceeds a set photovoltaic assembly temperature threshold value, the control module controls the heat dissipation framework to act so as to realize temperature control on the photovoltaic assembly 1100. Temperature management of the photovoltaic module can be preferably achieved.

In the embodiment, in the management of the health state of the battery assembly, an evaluation unit for evaluating the health state of the battery and an early warning unit for early warning the health state of the battery are arranged, and a main control unit is used for receiving the evaluation result of the evaluation unit and controlling the early warning unit to act when the evaluation result exceeds a set health threshold value. Thereby enabling better management of the state of health of the battery assembly.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. An energy storage device state of health assessment method, it includes the following steps:

and step S3, outputting the state of health of the battery.

2. The method according to claim 1, wherein the method comprises: the step S1 specifically includes the following steps,

3. The energy storage device state of health assessment method of claim 2, wherein: in the step S12, in the step S,

wherein, U _max 、I _max 、T _max 、K ^o _max And K _max The maximum operating voltage, the maximum operating current, the maximum operating duration, the maximum internal temperature and the maximum ambient temperature, respectively.

4. The energy storage device state of health assessment method of claim 3, wherein: the state of health estimation model in step S2 is constructed by the steps of,

step S21, constructing a health state evaluation model;

5. The energy storage device state of health assessment method of claim 4, wherein: in step S21, a health state assessment model is constructed based on a neural network, the health state assessment model having an input layer, a full connection layer and an output layer, the input layer being configured to input a diagnosis input sequence S, the full connection layer being configured to process the diagnosis input sequence S, the output layer being configured to receive a processing result of the full connection layer;

y _i ＝ω _i x _i +b _i ；

6. The method according to claim 5, wherein the method further comprises: in step S22, the sample set P has a plurality of sample sequences, and the plurality of sample sequences are collected from batteries in different operating states and different cycle times; each sample sequence is labeled with the capacity fade-out Q of the battery,

for the jth sample, its label Q _i The calculation formula is as follows,

for the j-th sample, the sample sequence is,

M _j 、

and

respectively showing the working state, the dimensionless working voltage, the dimensionless working current and the,A dimensioned operating time, a dimensioned internal temperature, and a dimensioned ambient temperature.