CN115642345A - Battery thermal management system applying ultra-large temperature-equalizing plate - Google Patents
Battery thermal management system applying ultra-large temperature-equalizing plate Download PDFInfo
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- CN115642345A CN115642345A CN202211396038.6A CN202211396038A CN115642345A CN 115642345 A CN115642345 A CN 115642345A CN 202211396038 A CN202211396038 A CN 202211396038A CN 115642345 A CN115642345 A CN 115642345A
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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
Abstract
The invention discloses a battery thermal management system applying an ultra-large temperature-equalizing plate, which comprises a liquid-cooling plate, a bus bar, the ultra-large temperature-equalizing plate and a heat-conducting insulating layer, wherein one end electrode of each cell unit in a battery module is connected on the bus bar in parallel, the heat-conducting insulating layer is arranged on the outer sides of the bus bar and the battery module, and the ultra-large temperature-equalizing plate and/or the liquid-cooling plate is/are arranged outside the heat-conducting insulating layer on at least one side. The battery thermal management system with the ultra-large temperature-equalizing plate simultaneously has the functions of heat dissipation, temperature equalization, heating, heat preservation and the like of the power battery module, can keep the temperature consistency of the battery module, reduce the frequent start and stop of an external air conditioning system, reduce the energy consumption of a vehicle, enable the battery system to always operate in an optimal working temperature range, and effectively reduce the problems of battery thermal runaway and the like.
Description
Technical Field
The invention relates to the technical field of battery thermal management systems, in particular to a battery thermal management system applying an ultra-large temperature-equalizing plate.
Background
According to survey and analysis, the fire causes of the new energy automobile can be mainly classified into five points: battery component aging, external impact, high temperature weather, battery thermal runaway, high load, and the like. Wherein, the fire caused by the factors of using electricity for fire accounts for more than half, and all the reasons can be summarized as follows: thermal runaway. This is because the chemical characteristics of the battery positive electrode material itself are too active, and when the battery temperature is too high or the charging voltage is too high, many potential exothermic side reactions are initiated, and if the heat is not dissipated in time, the temperature and pressure of the battery will rise rapidly, resulting in thermal runaway of the battery. The new energy automobile body battery integration technology (CTB) enables the automobile body to be more attractive, the wind resistance coefficient to be lower, the automobile body to be lighter, the safety to be enhanced, and the controllability to be smoother, effectively improves the battery volume and energy ratio, and greatly improves the endurance mileage. However, the CTB technology has extremely fatal disadvantages such as heat dissipation of the cell and prevention of heat diffusion. In the traditional battery pack, the battery core is subjected to multi-level split charging, the heat dissipation problem can be solved in a plurality of links in a dispersing way, and the battery core is directly agglomerated in the CTB technology, so that higher requirements are provided for overall battery heat management. The battery thermal management system becomes a key system for stabilizing the temperature of the battery and is a module which is very important for protecting the battery, so that the battery thermal management system is urgently needed to solve the problems of thermal runaway of the battery and the like.
Disclosure of Invention
The invention aims to provide a battery thermal management system applying an ultra-large temperature-equalizing plate, which is used for solving the problems in the prior art, so that a power battery module has the functions of heat dissipation, temperature equalization and the like, the temperature consistency of the battery module is kept, and the problems of battery thermal runaway and the like are effectively reduced.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a battery thermal management system applying an ultra-large temperature-equalizing plate, which comprises a liquid-cooling plate, a bus bar, the ultra-large temperature-equalizing plate and a heat-conducting insulating layer, wherein one end electrode of each battery cell unit in a battery module is connected on the bus bar in parallel, the heat-conducting insulating layer is arranged on the outer sides of the bus bar and the battery module, and the ultra-large temperature-equalizing plate and/or the liquid-cooling plate is arranged on the outer side of the heat-conducting insulating layer on at least one side.
Preferably, the ultra-large temperature-equalizing plate comprises two plates which are hermetically connected, an internal cavity is arranged between the two plates, the internal cavity is in a negative pressure vacuum state, is provided with a liquid suction core and is filled with a phase change heat transfer medium.
Preferably, the plate is a metal plate, an alloy plate or a non-metal plate, and the plate is formed by stamping, etching or cutting.
Preferably, the liquid cooling plate comprises two plates welded through stamping, etching or cutting, an inner cavity or a flow channel is arranged between the two plates, and an inlet and an outlet of liquid are arranged on the inner cavity or the flow channel.
Preferably, the upper side of the battery module is sequentially provided with the heat conduction insulating layer, the ultra-large temperature-uniforming plate and the lower side of the battery module are provided with the bus bar, the heat conduction insulating layer and the liquid cooling plate.
Preferably, a sealing cavity is arranged above the ultra-large temperature-equalizing plate on the upper side, and a phase-change material is arranged in the sealing cavity.
Preferably, the battery module is provided with on the upside with heat conduction insulation layer, downside have set gradually the cylinder manifold, heat conduction insulation layer ultra-large-scale samming board with the liquid cooling board.
Preferably, a sealed cavity is arranged between the ultra-large temperature-equalizing plate and the liquid cooling plate, and a phase-change material is arranged in the sealed cavity.
Preferably, the battery module includes a plurality of battery cell units stacked, and a negative electrode of the battery cell unit is connected in parallel to the bus bar.
Preferably, the air conditioner further comprises an external cooling device, and the external cooling device is an air conditioning system.
Compared with the prior art, the invention has the following technical effects:
the battery thermal management system with the ultra-large temperature-equalizing plate simultaneously has the functions of heat dissipation, temperature equalization, heating, heat preservation and the like of the power battery module, can keep the temperature consistency of the battery module, reduce the frequent start and stop of an external air conditioning system, reduce the energy consumption of a vehicle, enable the battery system to always operate in an optimal working temperature range, and effectively reduce the problems of battery thermal runaway and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a first structure of a battery thermal management system using an ultra-large temperature-uniforming plate according to the present invention;
FIG. 2 is a schematic diagram of a second structure of a battery thermal management system using an ultra-large temperature-uniforming plate according to the present invention;
FIG. 3 is a schematic diagram of a third structure of a battery thermal management system using an ultra-large temperature-uniforming plate according to the present invention;
FIG. 4 is a schematic diagram of a fourth configuration of a battery thermal management system using an ultra-large temperature-uniforming plate according to the present invention;
wherein: the solar battery module comprises a 1-battery module, a 2-bus bar, a 3-heat conduction insulation layer, a 4-ultra-large temperature equalization plate, a 5-liquid cooling plate and a 6-phase change material.
Detailed Description
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a battery thermal management system applying an ultra-large temperature-equalizing plate, which aims to solve the problems in the prior art, so that a power battery module has the functions of heat dissipation, temperature equalization and the like, the temperature consistency of the battery module is kept, and the problems of battery thermal runaway and the like are effectively reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1: the embodiment provides a battery thermal management system applying an ultra-large temperature-equalizing plate, which comprises a liquid-cooling plate 5, a bus bar 2, an ultra-large temperature-equalizing plate 4 and a heat-conducting insulating layer 3, wherein one end electrode of each battery cell unit in a battery module 1 is connected in parallel to the bus bar 2, the heat-conducting insulating layer 3 is arranged on the outer sides of the bus bar 2 and the battery module 1, and the ultra-large temperature-equalizing plate 4 and/or the liquid-cooling plate 5 are arranged on the outer side of the heat-conducting insulating layer 3 on at least one side. The liquid cooling plate and the confluence plate are conventional devices in the field, and the specific structure is not described in detail here.
The heat conducting insulating layer 3 is made of a heat conducting insulating material, can prevent the battery and other components from forming a short circuit, and has heat conductivity. The ultra-large temperature-equalizing plate comprises two hermetically connected plates, an internal cavity is arranged between the two plates, the internal cavity is in a negative pressure vacuum state, is provided with a liquid suction core and is filled with a phase-change heat transfer medium, the phase-change heat transfer medium can be water, ethanol, a refrigerant and the like, and the ultra-large temperature-equalizing plate has the functions of heat dissipation, temperature equalization, heating, heat preservation and the like on the battery module 1. The plate is a metal plate, an alloy plate or a non-metal plate, and if the plate is firm and durable, a copper plate, an aluminum plate, a magnesium plate, a stainless steel plate or an aluminum alloy plate is preferred; the non-metal plate is preferably made of ceramic, polymer material or the like, and the plate is formed by punching, etching or cutting. The liquid cooling plate 5 comprises two plates which are formed by punching, etching or cutting and welding, or is a blowing plate, an inner cavity or a flow channel is arranged between the two plates, an inlet and an outlet of liquid are arranged on the inner cavity or the flow channel, and liquid working media at the position are generally water, refrigerant, glycol and the like and are communicated with an air conditioning system in parallel or in series.
The battery module 1 includes a plurality of electric core units that pile up, and the negative pole of electric core unit connects in parallel on the cylinder manifold 2. Preferably, the present embodiment further includes an external cooling device, and the external cooling device is an air conditioning system.
The upside of battery module 1 has set gradually thermal insulation layer 3 and ultra-large-scale temperature-uniforming plate 4, downside and is provided with cylinder manifold 2, thermal insulation layer 3 and liquid cooling plate 5.
Except for the air conditioning system of the automobile, the battery thermal management system disperses heat generated by battery reaction to the battery module 1 through the ultra-large temperature equalizing plate 4 when the battery module 1 is in a charging or discharging state, so that the thermal runaway caused by overlarge temperature difference and local high temperature of the battery module 1 is avoided, and the temperature consistency of the battery module 1 is maintained.
Example two
As shown in fig. 2, the present embodiment is different from the first embodiment in that: the upside of battery module 1 has set gradually heat conduction insulation layer 3 and ultra-large scale temperature-uniforming plate 4, downside and is provided with cylinder manifold 2, heat conduction insulation layer 3 and liquid cooling plate 5, and the top of the ultra-large scale temperature-uniforming plate 4 of upside is provided with a sealed chamber, is provided with phase change material 6 in the sealed chamber, and phase change material can be crystallization hydrate, paraffin etc.. The phase change material 6 changes the state of the substance under the condition of constant temperature and can release and absorb latent heat. The phase-change material 6 can effectively avoid the rapid rise of the battery temperature caused by the delayed response of an air-conditioning refrigeration system when the battery heat is increased sharply; in addition, the energy consumption of the air-conditioning refrigeration system can be reduced. When the battery module 1 continuously releases heat or the heat release quantity is increased suddenly, the temperature exceeds the optimal working temperature range of the battery cell unit, partial heat is quickly and uniformly introduced into the phase-change material 6 through the ultra-large temperature-equalizing plate 4, the battery module 1 is stored in a material phase-change heat storage mode, and the temperature rise of the battery module 1 is reduced. When the heat exceeds the maximum energy storage of the phase-change material 6, the air conditioning system is started, and the redundant heat of the battery system is taken away through the circulating working medium with high specific heat capacity in the cooling plate. At the moment, the temperature equalizing plate plays an important role in maintaining the consistency of the battery temperature and avoiding the temperature imbalance of the battery module 1 caused by the overlarge temperature difference of the inlet and the outlet of the liquid cooling plate 5. In winter or cold areas, the phase-change material 6 can store heat emitted in the working process of the battery; when the battery stops working, the phase-change material 6 is gradually solidified to release heat, and the heat is transferred back to the battery, so that the battery can be kept in a proper temperature range for a long time, and the low-temperature starting of the battery is effectively avoided. When the battery stops working for too long, the heat of the phase-change material 6 is insufficient, the heat pump of the air conditioning system is started, the battery module 1 is heated through the liquid cooling plate 5, the temperature of the battery module 1 is ensured within the optimal working temperature range, and the battery is prevented from being attenuated due to low temperature.
EXAMPLE III
As shown in fig. 3, the present embodiment is different from the first embodiment in that: the upside of battery module 1 is provided with heat conduction insulating layer 3, the downside has set gradually cylinder manifold 2, heat conduction insulating layer 3, ultra-large-scale temperature-uniforming plate 4 and liquid cooling plate 5.
Example four
As shown in fig. 4, the present embodiment is different from the third embodiment in that: the upside of battery module 1 is provided with heat conduction insulation layer 3, downside and has set gradually cylinder manifold 2, heat conduction insulation layer 3, ultra-large-scale samming board 4 and liquid cooling board 5, is provided with a sealed chamber between ultra-large-scale samming board 4 and the liquid cooling board 5, is provided with phase change material 6 in the sealed chamber.
EXAMPLE five
The liquid cooling plate and the ultra-large vapor chamber are integrated, and are applicable to the first, second and third embodiments, wherein the two plates of the inner cavity formed by the ultra-large vapor chamber 4 are the shared plate of the ultra-large vapor chamber 4 and the liquid cooling plate, namely one side of the shared plate is the inner cavity of the ultra-large vapor chamber 4, and the other side of the shared plate is the inner cavity of the liquid cooling plate 5, so that the integration of the liquid cooling and the ultra-large vapor chamber is formed, the material use is reduced, and the thermal resistance is reduced.
The embodiment can keep the temperature consistency of the battery module 1, reduce frequent start and stop of an air conditioning system, reduce energy consumption of a vehicle, enable the battery system to operate in an optimal working temperature range all the time, and effectively reduce the occurrence of problems such as thermal runaway of the battery.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A battery thermal management system applying an ultra-large temperature-equalizing plate is characterized in that: the battery module comprises a liquid cooling plate, a bus bar, an ultra-large temperature-equalizing plate and a heat conduction insulating layer, wherein one end electrode of each battery cell unit in the battery module is connected in parallel to the bus bar, the bus bar and the outer side of the battery module are both provided with the heat conduction insulating layer, and the outer side of the heat conduction insulating layer is provided with the ultra-large temperature-equalizing plate and/or the liquid cooling plate.
2. The battery thermal management system applying the ultra-large temperature-equalizing plate according to claim 1, is characterized in that: the ultra-large temperature-equalizing plate comprises two hermetically connected plates, an internal cavity is arranged between the two plates, the internal cavity is in a negative pressure vacuum state, is provided with a liquid suction core and is filled with a phase-change heat transfer medium.
3. The battery thermal management system applying the ultra-large temperature equalizing plate according to claim 2, wherein: the plate is a metal plate, an alloy plate or a non-metal plate, and is formed by stamping, etching or cutting.
4. The battery thermal management system applying the ultra-large temperature-equalizing plate according to claim 1, is characterized in that: the liquid cooling plate comprises two plates which are formed by stamping, etching or cutting, processing and welding, an inner cavity or a flow channel is arranged between the plates, and an inlet and an outlet of liquid are arranged on the inner cavity or the flow channel.
5. The battery thermal management system applying the ultra-large temperature equalizing plate according to claim 1, wherein: the battery module is characterized in that the upper side of the battery module is sequentially provided with the heat conduction insulating layer, the ultra-large temperature equalizing plate and the lower side of the battery module is provided with the bus bar, the heat conduction insulating layer and the liquid cooling plate.
6. The battery thermal management system applying the ultra-large temperature-equalizing plate is characterized in that: a sealed cavity is arranged above the ultra-large temperature-equalizing plate on the upper side, and a phase-change material is arranged in the sealed cavity.
7. The battery thermal management system applying the ultra-large temperature-equalizing plate according to claim 1, is characterized in that: the battery module is characterized in that the heat conduction insulating layer and the lower side of the battery module are sequentially provided with the bus bar, the heat conduction insulating layer, the ultra-large temperature-equalizing plate and the liquid cooling plate.
8. The battery thermal management system applying the ultra-large temperature-equalizing plate according to claim 7, is characterized in that: a sealing cavity is arranged between the ultra-large temperature equalizing plate and the liquid cooling plate, and a phase-change material is arranged in the sealing cavity.
9. The battery thermal management system applying the ultra-large temperature-equalizing plate according to claim 1, is characterized in that: the battery module comprises a plurality of stacked battery cell units, and the cathodes of the battery cell units are connected in parallel on the bus board.
10. The battery thermal management system applying the ultra-large temperature-equalizing plate according to claim 1, is characterized in that: the air conditioner further comprises an external cooling device, and the external cooling device is an air conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211396038.6A CN115642345A (en) | 2022-11-09 | 2022-11-09 | Battery thermal management system applying ultra-large temperature-equalizing plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211396038.6A CN115642345A (en) | 2022-11-09 | 2022-11-09 | Battery thermal management system applying ultra-large temperature-equalizing plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117080608A (en) * | 2023-06-26 | 2023-11-17 | 中山星能创新科技有限公司 | Outdoor energy storage device suitable for low temperature environment |
| CN117154297A (en) * | 2023-11-01 | 2023-12-01 | 广州奥鹏能源科技有限公司 | High-protection energy storage battery module and application method thereof |
-
2022
- 2022-11-09 CN CN202211396038.6A patent/CN115642345A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117080608A (en) * | 2023-06-26 | 2023-11-17 | 中山星能创新科技有限公司 | Outdoor energy storage device suitable for low temperature environment |
| CN117154297A (en) * | 2023-11-01 | 2023-12-01 | 广州奥鹏能源科技有限公司 | High-protection energy storage battery module and application method thereof |
| CN117154297B (en) * | 2023-11-01 | 2024-01-12 | 广州奥鹏能源科技有限公司 | High-protection energy storage battery module and application method thereof |
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