CN216928719U - Thermal management system and energy storage system - Google Patents
Thermal management system and energy storage system Download PDFInfo
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- CN216928719U CN216928719U CN202220407083.6U CN202220407083U CN216928719U CN 216928719 U CN216928719 U CN 216928719U CN 202220407083 U CN202220407083 U CN 202220407083U CN 216928719 U CN216928719 U CN 216928719U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The embodiment of the utility model discloses a thermal management system and an energy storage system. The thermal management system is suitable for thermally managing the energy storage system, and comprises: an air duct and an adjusting device; the air duct is communicated with an air source of the thermal management system and each battery cluster unit, at least part of area of one side of the air duct close to the battery cluster units is of a soft structure, and the soft structure has deformation; adjusting device contacts the setting with the outside of soft construction, and adjusting device is used for driving soft construction and produces deformation to the air output in regulation wind channel. According to the technical scheme of the embodiment of the utility model, the air outlet quantity of the air duct is adjustable, the air outlet quantity of the air duct is dynamically adjusted according to the temperature of each battery cluster unit, so that the temperature of each battery cluster unit is balanced, and the current difference of each battery cluster unit is reduced, so that the consistency of the charge state of each battery cluster unit in the energy storage system is improved, and the stability and the reliability of the energy storage system are improved.
Description
Technical Field
The embodiment of the utility model relates to the technical field of energy storage, in particular to a thermal management system and an energy storage system.
Background
A thermal management system is typically included in the energy storage system for thermally managing the battery clusters in the energy storage system. At present, an existing thermal management system generally includes an air duct connected between an air conditioner and a battery cluster, and supplies air to the battery cluster through the air conditioner and the air duct to exchange heat with the battery cluster, so as to implement thermal management of the battery cluster.
However, the conventional air duct is usually designed as a passage with fixed air volume, so that the air volume delivered to the battery cluster by the thermal management system cannot be adjusted, which is not beneficial to adjusting the air volume of the thermal management system according to the actual operation condition of the energy storage system.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a thermal management system and an energy storage system, so that the air output of an air duct in the thermal management system can be adjusted.
In a first aspect, an embodiment of the present invention provides a thermal management system, which is suitable for performing thermal management on an energy storage system, where the energy storage system includes a plurality of battery cluster units, and the thermal management system includes: an air duct and an adjusting device;
the air duct is communicated with an air source of the thermal management system and each battery cluster unit, at least part of area of one side, close to the battery cluster unit, of the air duct is of a soft structure, and the soft structure has deformation;
the adjusting device is in contact with the outer side of the soft structure and is used for driving the soft structure to deform so as to adjust the air output of the air channel.
Optionally, the air duct includes a main air duct section and branch air duct sections that are arranged in one-to-one correspondence with the battery cluster units;
the main air duct section is communicated with an air source of the thermal management system and the first end of each branch air duct section, the second end of each branch air duct section is communicated with the corresponding battery cluster unit, at least part of branch air duct sections comprise the soft structures, and the adjusting devices are arranged in one-to-one correspondence with the soft structures.
Optionally, the flexible structure includes a flexible connector connected to a side of the air duct near the battery cluster unit.
Optionally, the soft connector includes soft pipeline, soft pipeline pass through flange joint in on the wind channel, adjusting device with the outside of soft pipeline contacts the setting.
Optionally, the thermal management system further comprises a control device, and the control device is configured to control the adjusting device.
Optionally, the control device includes a first control unit and second control units that are arranged in one-to-one correspondence with the battery cluster units, where the first control unit is in communication connection with each of the second control units, and the second control units are further connected to the corresponding battery cluster units and the adjusting device.
Optionally, the first control unit and the second control unit are both battery management units.
Optionally, the adjusting device includes a motor and a transmission mechanism, one end of the transmission mechanism is connected to the motor, and the other end of the transmission mechanism is in contact with the outer side of the soft structure;
the motor is used for controlling the transmission mechanism to drive the soft structure to deform.
Optionally, the transmission mechanism includes at least one transmission rod, one end of the transmission rod is connected to the motor, and the other end of the transmission rod is in contact with the outer side of the soft structure.
Optionally, the thermal management system further includes an air supply device, the air supply device is used as an air source of the thermal management system, and an air outlet of the air supply device is communicated with the air duct.
In a second aspect, an embodiment of the present invention further provides an energy storage system, including the thermal management system of the energy storage system in the first aspect.
According to the thermal management system and the energy storage system provided by the embodiment of the utility model, at least part of the area of the air channel close to one side of the battery cluster units is of the flexible structure with deformation, so that the adjusting device can drive the flexible structure to deform, and the air outlet quantity of the air channel is adjusted.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the utility model. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an air duct according to an embodiment of the present invention;
FIG. 3 is a block diagram of a thermal management system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another air duct provided in the embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the utility model provides a thermal management system which is suitable for thermally managing an energy storage system. Fig. 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present invention. Referring to fig. 1, the energy storage system includes a plurality of battery cluster units 10, and the thermal management system includes: an air duct 30 and a regulating device 40; the air duct 30 is communicated with an air source of the thermal management system and each battery cluster unit 10, at least part of the area of one side of the air duct 30, which is close to the battery cluster unit 10, is a soft structure 310, and the soft structure 310 has deformation; the adjusting device 40 is disposed in contact with the outer side of the soft structure 310, and the adjusting device 40 is used for driving the soft structure 310 to deform so as to adjust the air output of the air duct 30.
Specifically, the air source of the thermal management system may supply air to the air duct 30 to supply air to each battery cluster unit 10 through the air duct 30, so as to adjust the temperature of each battery cluster unit 10, and implement thermal management on the battery cluster units 10 in the energy storage system. Optionally, the thermal management system further includes an air supply device 20, in fig. 1, the air supply device 20 is schematically arranged as an air source of the thermal management system, and an air outlet of the air supply device 20 is communicated with the air duct 30. The air supply device 20 can supply air to the air duct 30 through its air outlet, and the air supply device 20 may specifically include an air conditioner and/or a fan.
At least a partial region of the air duct 30 near the battery cluster unit 10 is a soft structure 310, for example, the air duct 30 includes an air outlet communicated with the battery cluster unit 10, at least a partial region of the air duct 30 near the air outlet may be set to be the soft structure 310, at least a partial region may mean that all of a circumference of the portion of the air duct 30 is the soft structure 310, or a partial side wall of the portion of the air duct 30 is the soft structure 310. The flexible structure 310 may be a deformable structure, including but not limited to a flexible structure formed of a material such as silicone or canvas. The adjusting device 40 can drive the soft structure 310 to move up and down in a telescopic manner, so that the soft structure 310 deforms to change the aperture of the air duct in the region where the soft structure 310 is located, and the air output of the air duct 30 can be adjusted.
As each battery cluster unit in the energy storage system can present different impedance characteristics along with the change of the battery temperature, different system currents are generated, and the state of charge difference occurs in the energy storage system. A channel for fixing air volume is usually arranged in a heat management system of the conventional energy storage system, so that the air volume conveyed to different battery cluster units by the heat management system cannot be adjusted, and the air volume conveyed to different battery cluster units by the heat management system is difficult to dynamically adjust according to different actual operating temperature working conditions.
Compared with the prior art, according to the technical scheme of the embodiment of the utility model, at least part of the area of the air channel close to one side of the battery cluster unit is of the flexible structure with the deformation quantity, so that the adjusting device can drive the flexible structure to deform, and the air outlet quantity of the air channel is adjusted.
It should be noted that fig. 1 only schematically illustrates two battery cluster units 10 in the energy storage system, and an air duct 30 is correspondingly provided to communicate with the air outlet of the air supply device 20 and the two battery cluster units 10. In practical applications, the energy storage system may include a plurality of battery cluster units 10, and accordingly, the air duct 30 in the thermal management system may communicate with the air outlet of the air device 20 and each battery cluster unit 10.
With continued reference to fig. 1, on the basis of the above embodiment, optionally, the air duct 30 includes a main air duct section 320 and branch air duct sections 330 disposed in one-to-one correspondence with the respective battery cluster units 10; the main air duct section 320 is communicated with an air source of the thermal management system (for example, when the air source is the air supply device 20, the main air duct section 320 is communicated with an air outlet of the air supply device 20) and a first end of each of the branch air duct sections 330, a second end of each of the branch air duct sections 330 is communicated with the corresponding battery cluster unit 10, at least some of the branch air duct sections 330 include soft structures 310, and the adjusting devices 40 are arranged in one-to-one correspondence with the soft structures 310.
Specifically, one branch duct section 330 may be provided for each battery cluster unit 10 in the energy storage system, and the soft structure 310 is located in at least a partial region of the branch duct section 330. In fig. 1, each of the branch duct sections 330 is schematically provided with a soft structure 310, and in practical applications, the soft structure 310 may be provided only in at least a part of the branch duct sections 330. One adjusting device 40 may be disposed corresponding to the soft structure 310 in each branch air duct section 330, or one adjusting device 40 may be shared by the soft structures 310 in a plurality of branch air duct sections 330, so that the air output of the branch air duct section 330 corresponding to each battery cluster unit 10 is adjustable. The advantage of setting up like this is favorable to carrying out dynamic adjustment to the air output of corresponding branch wind channel section 330 according to the temperature of each battery cluster unit 10 of balancing reduces the current difference of each battery cluster unit 10, thereby promotes the uniformity of the state of charge of each battery cluster unit 10 in the energy storage system, and improves energy storage system's stability and reliability. Fig. 2 is a schematic structural diagram of an air duct provided in an embodiment of the present invention, which may be a schematic structural diagram of a portion of the air duct near one side of a battery cluster unit, for example, a branch air duct section. Referring to fig. 2, the flexible structure may optionally include a flexible connector 311, and the flexible connector 311 is connected to a side of the air duct adjacent to the battery cluster unit. The soft connecting part 311 comprises a soft pipeline 312, the soft pipeline 312 is connected to the air duct through a flange, and the adjusting device is arranged in contact with the outer side of the soft pipeline 312.
Illustratively, the flexible connector 311 may be attached to the branch duct segment. The soft connector 311 includes a soft pipe 312 and flanges connected to pipe openings on two sides of the soft pipe 312, and the soft pipe 312 is connected to the branch air duct sections on two sides through the flanges. The material of the soft tube 312 includes silica gel canvas. The adjusting device 40 can drive the soft pipeline 312 to move up and down in a telescopic manner under the control of the control device 50, so that the soft pipeline 312 deforms, the air duct aperture of the area where the soft pipeline 312 is located is changed, and the air output of the branch air duct section is adjusted.
Fig. 3 is a schematic block diagram of a thermal management system according to an embodiment of the present invention. With reference to fig. 1 and 3, optionally, the thermal management system further comprises a control device 50, and the control device 50 is configured to control the adjusting device 40. Specifically, the control device 50 can control the adjusting device 40 to drive the soft structure 310 to deform, so as to adjust the air output of the air duct. When the air source of the thermal management system is the air supply device 20, the control device 50 may also be used to control the air supply device 20 to supply air to the air duct 30.
With reference to fig. 1 and fig. 3, on the basis of the above embodiment, optionally, the control device 50 includes a first control unit 510 and second control units 520 that are disposed in one-to-one correspondence with the battery cluster units 10, the first control unit 510 is in communication connection with the second control units 520, and the second control units 520 are further connected to the corresponding battery cluster units 10 and the adjustment device 40. The second control unit 520 is configured to collect the temperature of the corresponding battery cluster unit 10, and the first control unit 510 is configured to control the second control unit 520 according to the temperature of each battery cluster unit 10, so as to control the adjusting device 40 to adjust the deformation amount of the soft structure 310 through the second control unit 520.
Alternatively, the first control unit 510 and the second control unit 520 may both be battery management units, for example, the second control unit 520 is a battery management unit in the battery cluster unit 10 and is used for managing the batteries in the battery cluster unit 10, and the first control unit 510 is a battery management unit in the energy storage system and is used for managing the batteries in each battery cluster unit 10 of the entire energy storage system.
The first control unit 510 may be used to control the respective second control unit 520, and the second control unit 520 may also be used to control the adjustment device 40. Illustratively, the second control unit 520 collects the temperature of each single battery in the corresponding battery cluster unit 10, and transmits the temperature data of each single battery to the first control unit 510, and the first control unit 510 controls each second control unit 520 according to the temperature of each battery cluster unit 10, so that the adjusting device 40 can adjust the deformation amount of the soft structure 310 in the corresponding branch air duct section 330 under the control of the second control unit 520, thereby adjusting the air output amount of the corresponding branch air duct section 330. According to the technical scheme of the embodiment, the air output of each branch air duct section 330 is adjusted by integrating the temperature data of the single batteries in each battery cluster unit 10, so that the temperature of each battery cluster unit 10 is balanced, the current difference of each battery cluster unit 10 is reduced, the consistency of the charge state of each battery cluster unit 10 in the energy storage system is improved, and the stability and the reliability of the energy storage system are improved.
Based on the above embodiment, with reference to fig. 1 and fig. 3, optionally, the battery cluster unit 10 includes a plurality of single batteries, the second control unit 520 is configured to collect an average temperature, a maximum temperature, and a minimum temperature of each single battery in each battery cluster unit 10, and the first control unit 510 is configured to control the second control unit 520 according to the average temperature, the maximum temperature, the minimum temperature, and the maximum temperature and the minimum temperature of all single batteries in each battery cluster unit 10, so as to control the adjusting device 40 to adjust the deformation amount of the soft structure 310 through the second control unit 520.
Illustratively, each battery cluster unit 10 is communicated with one branch air channel section 330 and corresponds to one second control unit 520, and the soft structure 310 in each branch air channel section 330 is correspondingly provided with one adjusting device 40. Each second control unit 520 may respectively obtain an average temperature, a maximum temperature, and a minimum temperature of each battery cell in the corresponding battery cluster unit 10, and the first control unit 510 may determine the average temperature of each battery cluster unit 10 in the energy storage system according to the average temperature of each battery cell of each battery cluster unit 10, determine the maximum temperature and the minimum temperature of all battery cells in the energy storage system according to the maximum temperature and the minimum temperature of each battery cell of each battery cluster unit 10, and control each second control unit 520 accordingly. For example, the first control unit 510 may determine the deformation amount of the soft structure 310 in the branch air duct section 330 communicated with the battery cluster unit 10 according to the average temperature, the maximum temperature, and the minimum temperature of each battery cell in the battery cluster unit 10 corresponding to the second control unit 520, and the average temperature of each battery cluster unit 10, and the maximum temperature and the minimum temperature of all battery cells, so as to control the second control unit 520 according to the deformation amount, and enable the adjusting device 40 to adjust the deformation amount of the corresponding soft structure 310 under the control of the second control unit 520, thereby adjusting the air outlet amount of the corresponding branch air duct section 330.
With reference to fig. 1 and 3, the following description will be made by taking an energy storage system including n battery cluster units 10, a thermal management system including n second control units 520, n branch air duct sections 330, and n adjusting devices 40, where i ═ 1, 2, 3.. ang., n, where the i-th battery cluster unit 10, the i-th second control unit 520, the i-th branch air duct section 330, and the i-th adjusting device 40 are correspondingly provided as an example. Optionally, the first control unit 510 controls the second control unit 520, so that the adjusting device 40 adjusts the soft structures 310 in the corresponding branched duct section 330 to target positions under the control of the second control unit 520, and the target positions of the soft structures 310 in the ith branched duct section 330 are related to the difference between the average temperature of each battery cluster unit 10 and the average temperature of each battery cell in the ith battery cluster unit 10, the difference between the maximum temperature of all battery cells and the maximum temperature of each battery cell in the ith battery cluster unit 10, the difference between the minimum temperature of all battery cells and the minimum temperature of each battery cell in the ith battery cluster unit 10.
Exemplarily, in the ith branch duct section 330Target position Q of soft structure 310 of (2)iCan be expressed as:
the adjusting device 40 may drive the soft structure 310 to deform in a vertical direction (i.e., a direction perpendicular to the extending direction of the branch air channel section 330 in fig. 1), and accordingly, the position of the soft structure 310 in the branch air channel section 330 may be the position of the portion of the soft structure 310 in contact with the adjusting device 40 in the vertical direction. Q0Is the default position of the soft structure 310, k is the number of the unit batteries in the ith battery cluster unit 10, Tcell_jIs the temperature, T, of the jth cell in the ith cell cluster unit 10avg_iIs the average temperature of each single battery in the ith battery cluster unit 10, m is the number of the battery cluster units 10 in the energy storage system, Tavg_sysIs the average temperature, T, of each battery cluster cell 10 in the energy storage systemhigh_iIs the highest temperature, T, of each unit cell in the ith battery cluster unit 10high_sysIs the highest temperature, T, of all the cells in the energy storage systemlow_iIs the lowest temperature, T, of each unit cell in the ith battery cluster unit 10low_sysIs the lowest temperature of all the single batteries in the energy storage system, a, b and c are preset control parameters, and Q is0The sizes of a, b and c can be set according to requirements.
Target position Q due to soft structure 310 in the ith branch duct section 330iIn relation to the air output of the ith branch air duct section 330, according to the technical scheme of this embodiment, the temperature data of each battery cluster unit 10 in the energy storage system is integrated with the air output of each branch air duct section 330The air output is adjusted, so that the temperature of each battery cluster unit 10 is balanced, the current difference of each battery cluster unit 10 is reduced, the consistency of the charge state of each battery cluster unit 10 in the energy storage system is improved, and the stability and the reliability of the energy storage system are improved.
With reference to fig. 1 and fig. 3, optionally, the adjusting device 40 includes a motor 410 and a transmission mechanism 420, one end of the transmission mechanism 420 is connected to the motor 410, and the other end of the transmission mechanism 420 is disposed in contact with the outer side of the soft structure 310; the motor 410 is used for controlling the transmission mechanism 420 to drive the soft structure 310 to deform. Specifically, the motor 410 is connected to the transmission mechanism 420, and the motor 410 can be controlled by the corresponding second control unit 520, so that the motor 410 can control the transmission mechanism 420 to drive the soft structure 310 to move, and the soft structure 310 deforms, thereby adjusting the air output of the corresponding air branch duct section 330.
Fig. 4 is a schematic structural diagram of another air duct provided in an embodiment of the present invention, which may be a schematic structural diagram of a portion of the air duct near one side of the battery cluster unit, for example, a branch air duct section. Referring to fig. 1, fig. 3 and fig. 4, optionally, the driving mechanism 420 includes at least one driving rod 421, one end of the driving rod 421 is connected to the motor 410 (not shown in the figure), and the other end of the driving rod 421 is disposed in contact with the outer side of the soft structure 310. Fig. 4 schematically shows a case where the transmission mechanism 420 includes two transmission rod members 421, and in practical applications, the number of the transmission rod members 421 may be set according to requirements, which is not limited in this embodiment. Under the control of the motor 410, the driving rod 421 can drive the soft structure 310 to move up and down along the vertical direction, so that the soft structure 310 deforms, and the air output of the corresponding air branch duct section 330 is adjusted.
An embodiment of the present invention further provides an energy storage system, which includes the thermal management system in any of the embodiments described above, and therefore has a structure and beneficial effects corresponding to the implementation of the thermal management system, which are not described herein again.
The above-described embodiments should not be construed as limiting the scope of the utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A thermal management system adapted to thermally manage an energy storage system, the energy storage system including a plurality of battery cluster units, the thermal management system comprising: an air duct and an adjusting device;
the air duct is communicated with an air source of the thermal management system and each battery cluster unit, at least part of area of one side, close to the battery cluster unit, of the air duct is of a soft structure, and the soft structure has deformation;
the adjusting device is in contact with the outer side of the soft structure and is used for driving the soft structure to deform so as to adjust the air output of the air channel.
2. The thermal management system of claim 1, wherein the air duct comprises a main air duct section and branch air duct sections arranged in one-to-one correspondence with each of the battery cluster units;
the main air duct section is communicated with an air source of the thermal management system and the first end of each branch air duct section, the second end of each branch air duct section is communicated with the corresponding battery cluster unit, at least part of branch air duct sections comprise the soft structures, and the adjusting devices are arranged in one-to-one correspondence with the soft structures.
3. The thermal management system of claim 1, wherein the flexible structure comprises a flexible connector attached to a side of the air duct proximate to the battery cluster unit.
4. The thermal management system of claim 3, wherein the flexible connector comprises a flexible pipe that is flanged to the air duct, and the adjustment device is disposed in contact with an outer side of the flexible pipe.
5. The thermal management system of claim 1, further comprising a control device for controlling the regulating device.
6. The thermal management system according to claim 5, wherein the control device includes a first control unit and second control units disposed in one-to-one correspondence with the battery cluster units, the first control unit is communicatively connected to the second control units, and the second control units are further connected to the corresponding battery cluster units and the adjustment device.
7. The thermal management system of claim 6, wherein the first control unit and the second control unit are each battery management units.
8. The thermal management system of claim 1, wherein the adjusting device comprises a motor and a transmission mechanism, one end of the transmission mechanism is connected with the motor, and the other end of the transmission mechanism is arranged in contact with the outer side of the soft structure;
the motor is used for controlling the transmission mechanism to drive the soft structure to deform.
9. The thermal management system of claim 8, wherein the transmission mechanism comprises at least one transmission rod, one end of the transmission rod is connected to the motor, and the other end of the transmission rod is arranged in contact with the outer side of the soft structure.
10. The thermal management system of claim 1, further comprising an air supply device, wherein the air supply device is used as an air source of the thermal management system, and an air outlet of the air supply device is communicated with the air duct.
11. An energy storage system comprising the energy storage system thermal management system of any of claims 1-9.
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| CN202220407083.6U CN216928719U (en) | 2022-02-25 | 2022-02-25 | Thermal management system and energy storage system |
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| CN202220407083.6U CN216928719U (en) | 2022-02-25 | 2022-02-25 | Thermal management system and energy storage system |
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