Battery Pack heat pipe-type cooling system
Technical field
The present invention relates to the battery thermal management system used in automobile power cell or energy-storage battery, in particular it relates to a kind of battery Pack heat pipe-type cooling system。
Background technology
Increasingly serious along with Energy situation, the waste gas of vehicle exhaust and thermal power generation is also constantly polluting our urban environment, and the people expect to improve city living environment quality forwardly。At present, Chinese Government is promoting the development of electric automobile energetically, and battery is the core component of electric automobile, but the quality of the heat management system of battery directly affects safety and the reliability etc. of battery。
Heat management system includes cooling system and heating system, and cooling system is the difficult problem being badly in need of overcoming, if battery temperature is too high without controling effectively, it will cause immeasurable consequence, not only influence whether battery life, even can on fire set off an explosion。
At present, the battery cooling system known has liquid cooling and air-cooled, but has the defect of each of which。Liquid cooling may result in liquid leakage and causes short circuit, it is necessary to special air tightness detection equipment, and the later stage also has the risk of gas leakage, in addition, in addition it is also necessary to external impetus carries out circulation and the cooling of liquid。Air-cooled needs will pass into after air filtration inside Pack, and this will reduce the IP degree of protection of Pack, and also needs periodic replacement air filtering core, and later maintenance cost is higher。
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of battery Pack heat pipe-type cooling system, including a battery container, battery modules, heat pipe radiating system, temp testing controlling system so that it is can solve the problem that now general disadvantages mentioned above existing for battery Pack cooling system on the market。
According to battery Pack heat pipe-type cooling system provided by the invention, including battery container, battery modules and heat pipe radiating system;
Wherein, described battery modules is put in the inner side of described battery container;
Described heat pipe radiating system includes heat-conducting plate, heat pipe and finned tube;
Wherein, described heat-conducting plate is arranged in described battery modules;One end of described heat pipe is arranged in described heat-conducting plate, and the other end passes described battery container;Described finned tube is arranged on the other end of described heat pipe and is arranged on outside described battery container。
Preferably, also including temp testing controlling system, described temp testing controlling system includes control system and temperature sensor;Described heat pipe radiating system also includes fan;
Described temperature sensor is arranged in described battery modules and/or on described heat pipe;
Described fan is arranged on the side of described finned tube;Described control system electrically connects with described fan, described temperature sensor。
Preferably, heat conduction rubber cushion is also included;
Described heat conduction rubber cushion is arranged between described battery modules and described heat-conducting plate。
Preferably, when the temperature that arbitrary temperature sensor obtains is more than design temperature threshold value, described control system controls described fan and rotates。
Preferably, the side of described battery modules is equipped with radiating aluminium sheet。
Preferably, described heat pipe adopts gravity assisted heat pipe;Described finned tube adopts fin-tube integral type;The quantity of described fan is many groups。
Preferably, the quantity of described battery modules is multiple;
Arbitrary described battery modules is provided with at least one temperature sensor;Arbitrary described battery modules is provided with multiple separate heat pipe。
Preferably, described heat-conducting plate is provided with liquid leakage tank。
Preferably, module fixed support is also included;
Described module fixed support is bolted the lower wall surface of described battery container;Described battery modules is arranged on inside described module fixed support, described module fixed support formed and be connected with the fixing of described battery container。
Compared with prior art, the present invention has following beneficial effect:
1, the present invention adopts the mode of heat radiation indirectly, first the heat of battery core in battery modules is transmitted to heat pipe inside Pack, it is delivered to again on finned tube, utilize the high conductance of gravity assisted heat pipe, the high-cooling property of finned tube and irreversibility, finally distributing heat in air, radiating efficiency is higher。
2, present invention employs heat conduction rubber cushion and heat-conducting plate, increase effective contact area of heat pipe, improve the work efficiency of heat pipe;Employing finned tube dispels the heat, and increases again effective area of dissipation, accelerates the heat radiation of battery Pack。
3, the present invention is provided with modular fan, namely adopt and organize fan more, according to the temperature measured, utilize program control independent unlatching fan and control rotation speed of the fan, avoid the waste of the energy, very efficient energy-saving, even and if electric fan do not work, sufficiently large finned tube area can also carry out in certain temperature range from heat radiation。
4, in the present invention, heat pipe is gravity assisted heat pipe, also referred to as two-phase closed type hot siphon, it is possible to reduce use cost greatly, also there is no concern that the heat of outside is passed to inside Pack。
5, heat pipe reliability of the present invention is high, life-time service does not need to change, the present invention arranges and is made up of many independent heat pipes, the damage of single heat pipe has no effect on the properly functioning of cooling system, functional reliability is high, even if single heat pipe generation leakage, owing to its filling amount is few, it is possible to discharged by the liquid leakage tank on heat-conducting plate。
6, in electricity of the present invention, finned tube adopts fin-tube integral type, and this finned tube is to connect all of heat pipe, so can improve radiating efficiency, give full play to the effectiveness of finned tube。
7, IP degree of protection of the present invention is high, does not use consumptive material, and reliability is high, and radiating efficiency is high, energy-conserving and environment-protective, and repeatable utilization has actual application value widely。
Accompanying drawing explanation
By reading detailed description non-limiting example made with reference to the following drawings, the other features, objects and advantages of the present invention will become more apparent upon:
Fig. 1 is the structural representation of the present invention。
Fig. 2 is the cross-sectional schematic in A-A direction along Fig. 1。
In figure:
1 is the first temperature sensor;2 is the first heat conduction rubber cushion;3 is the second battery modules;4 is the second temperature sensor;5 is the second heat conduction rubber cushion;6 is the 3rd battery modules;7 is three-temperature sensor;8 is the 3rd heat conduction rubber cushion;9 is the 4th temperature sensor;10 is the 3rd heat pipe;12 is the 3rd heat-conducting plate;13 is the second heat-conducting plate;14 is the second heat pipe;15 is the first heat-conducting plate;16 is the first heat pipe;17 is fan;18 is control system;19 is the first battery modules;20 is heat-dissipating aluminium plate;21 is the 3rd bolt;22 is the 3rd module fixed support;23 is the second bolt;24 is the second module fixed support;25 is the first bolt;26 is the first module fixed support。
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail。Following example will assist in those skilled in the art and are further appreciated by the present invention, but do not limit the present invention in any form。It should be pointed out that, to those skilled in the art, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement。These broadly fall into protection scope of the present invention。
In the present embodiment, battery Pack heat pipe-type cooling system provided by the invention, including battery container, battery modules and heat pipe radiating system;
Wherein, described battery modules is put in the inner side of described battery container;
Described heat pipe radiating system includes heat-conducting plate, heat pipe and finned tube;
Wherein, described heat-conducting plate is arranged in described battery modules;One end of described heat pipe is arranged in described heat-conducting plate, and the other end passes described battery container;Described finned tube is arranged on the other end of described heat pipe and is arranged on outside described battery container。
Battery Pack heat pipe-type cooling system provided by the invention, also includes temp testing controlling system, and described temp testing controlling system includes control system and temperature sensor;Described heat pipe radiating system also includes fan;
Described temperature sensor is arranged in described battery modules and/or on described heat pipe;
Described fan is arranged on the side of described finned tube;Described control system electrically connects with described fan, described temperature sensor。
Battery Pack heat pipe-type cooling system provided by the invention, also includes heat conduction rubber cushion;Described heat conduction rubber cushion is arranged between described battery modules and described heat-conducting plate。
When the temperature that arbitrary temperature sensor obtains is more than design temperature threshold value, described control system controls described fan and rotates。
As one preferred embodiment, the side of described battery modules is equipped with radiating aluminium sheet。Described heat pipe adopts gravity assisted heat pipe;Described finned tube adopts fin-tube integral type;The quantity of described fan is many groups。Battery core in battery modules is wrapped up by radiating aluminium sheet 20。
As one preferred embodiment, the quantity of described battery modules is multiple;It is the first battery modules 19 in the present embodiment, the second battery modules 3, the 3rd battery modules 6。
Arbitrary described battery modules is provided with at least one temperature sensor;Arbitrary described battery modules is provided with multiple separate heat pipe。In the present embodiment, first battery modules 19 is provided with first temperature sensor the 1, first heat pipe 16, second battery modules 3 is provided with second temperature sensor the 4, second heat pipe 14, the 3rd battery modules 6 is provided with three-temperature sensor the 7, the 3rd heat pipe 10。
As one preferred embodiment, described heat-conducting plate is provided with liquid leakage tank。
As one preferred embodiment, battery Pack heat pipe-type cooling system provided by the invention also includes module fixed support;
Described module fixed support is bolted the lower wall surface of described battery container;Described battery modules is arranged on inside described module fixed support, described module fixed support formed and be connected with the fixing of described battery container。
When using battery Pack heat pipe-type cooling system provided by the invention, the heat of battery modules is efficiently transferred on heat-conducting plate by heat conduction rubber cushion, then heat is effectively transferred to heat pipe by heat-conducting plate again, owing to finned tube is connected with heat pipe, utilize the high conductance of heat pipe and finned tube, start fan 17 and dispel the heat;Described temp testing controlling system, is the temperature being obtained module internal battery core by temperature sensor exactly, and the temperature from the farthest heat pipe of blower fan, then passes through control system 18 to drive fan work to dispel the heat。Even if additionally, fan does not start, so large-area finned tube can also carry out well from heat radiation。
More specifically, assume that battery Pack outwards exports power, after a period of time, Pack temperature is increased to 35 degree, and heat pipe is started working, and the position rising to finned tube after liquid gasification (sets and reaches 38 degree from the heat pipe temperature that fan is farthest, fan is started working), along with the heat pipe temperature at finned tube position reduces, owing to action of gravity flow back into bottom heat pipe along heat pipe wall after gas liquefaction, with this kind of pattern ceaselessly efficient operation。If only certain module temperature is too high, the single fan of correspondence only will can be started
The battery Pack heat pipe-type cooling system that heat of the present invention provides, reliability is high, energy-conservation and the weak point of current battery Pack cooling system can be improved, both improve the safety of battery Pack, the maintenance cost in later stage can also be saved, more it is consistent with the requirement of energy-saving and emission-reduction, is with a wide range of applications in actual applications。
Above specific embodiments of the invention are described。It is to be appreciated that the invention is not limited in above-mentioned particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims, and this has no effect on the flesh and blood of the present invention。