CN209001080U - A kind of L-type runner cooling system for power battery pack heat dissipation - Google Patents

A kind of L-type runner cooling system for power battery pack heat dissipation Download PDF

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Publication number
CN209001080U
CN209001080U CN201821772372.6U CN201821772372U CN209001080U CN 209001080 U CN209001080 U CN 209001080U CN 201821772372 U CN201821772372 U CN 201821772372U CN 209001080 U CN209001080 U CN 209001080U
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battery pack
power battery
outlet
inlet
cooling system
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陈凯
陈逸明
李泽宇
龙树明
侯竣升
汪双凤
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Zhejiang Carbon Horse Technology Co ltd
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South China University of Technology SCUT
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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

本实用新型公开了一种用于动力电池组散热的L型流道冷却系统，包括进口段、进口导流板、动力电池组、出口导流板、出口段和冷却流道，进口导流板和出口导流板平行分布在与动力电池组保持一定间距的上下两侧，所述间距分别形成上下空气流道，与动力电池组中各个相邻单体电池间的间距形成的平行冷却流道呈垂直关系，进口段与进口导流板连接，出口段与出口导流板连接，进口段与出口段呈垂直关系，整个冷却系统呈“L”型结构，所述靠近进口段的冷却流道间距大于靠近出口段的冷却流道间距。本实用新型在体积不变、功耗增加不明显的情况下提高了动力电池冷却系统的散热效率，从而降低了动力电池组的热点温度和温差，延长了动力电池组的使用寿命。

The utility model discloses an L-shaped flow channel cooling system for heat dissipation of a power battery pack, which comprises an inlet section, an inlet flow guide plate, a power battery pack, an outlet flow guide plate, an outlet section and a cooling flow channel, and an inlet flow guide plate. They are distributed parallel to the outlet baffles on the upper and lower sides that maintain a certain distance from the power battery pack. The distances form the upper and lower air flow channels respectively, and the parallel cooling flow channels formed with the distance between each adjacent single cell in the power battery pack In a vertical relationship, the inlet section is connected with the inlet baffle, the outlet section is connected with the outlet baffle, the inlet section is in a vertical relationship with the outlet section, and the entire cooling system has an "L"-shaped structure. The spacing is greater than the spacing of the cooling runners near the outlet section. The utility model improves the heat dissipation efficiency of the power battery cooling system under the condition that the volume remains unchanged and the power consumption does not increase significantly, thereby reducing the hot spot temperature and temperature difference of the power battery pack, and prolonging the service life of the power battery pack.

Description

A kind of L-type runner cooling system for power battery pack heat dissipation
Technical field
The utility model relates to power battery pack field of radiating, and in particular to a kind of L-type for power battery pack heat dissipation Runner cooling system.
Background technique
In recent years, the development of automobile industry and the extensive use of automobile exacerbate problem of environmental pollution.Electric car and mixed A kind of important substitution of the power vehicle as orthodox car is closed, is expected to reduce the tail gas pollution of automobile, thus is quickly grown.Power Core component of the battery pack as electric car, decides the performance of electric car.Power battery pack during the work time, generates A large amount of heat.If these heats cannot be excluded effectively, the temperature and the temperature difference of battery pack will be increased, influences the performance of battery pack, And cause serious security risk.Therefore, it is necessary to carry out heat management to power battery pack, guarantee battery pack in suitable temperature and Work, to improve the performance of battery pack, extends the service life of battery pack in the temperature difference range, this produces Development of EV Industry has great importance.Currently, air cooling is the most commonly used heat management mode in various battery thermal management technologies. However, the difference of the cooling condition of each battery will cause internal battery pack to generate larger in battery pack since heat capacity of air is smaller The temperature difference.Therefore, it is necessary to the air cooling systems to battery thermal management reasonably to be designed, and guarantee the consistent cooling item of each battery Part, to reduce the temperature difference and hot(test)-spot temperature of battery pack.
Utility model content
The purpose of this utility model is in view of the deficiencies of the prior art, to provide a kind of L for power battery pack heat dissipation Type runner cooling system, the cooling system pass through reasonable Arrangement system under the premise of not increasing system bulk and control energy consumption The spacing distribution of coolant flow channel, reduces the battery pack temperature difference, and reduce the hot(test)-spot temperature of battery pack in system.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of L-type runner cooling system for power battery pack heat dissipation, the system comprises inducers, import water conservancy diversion Plate, power battery pack, outlet deflector, outlet section and coolant flow channel, import deflector and outlet deflector be distributed parallelly on and Power battery pack keeps the two sides up and down of a fixed spacing, and the spacing is respectively formed air flow channel up and down, in power battery pack The perpendicular relationship of coolant flow channel that spacing between each neighboring unit cell is formed, the coolant flow channel are parallel to each other, inducer It is connect with import deflector, outlet section is connect with outlet deflector, inducer and the perpendicular relationship of outlet section, entire cooling system L-shaped structure, air are entered after import deflector reaches lower air flow channel by inducer, by the compressing of import deflector enter with The vertical coolant flow channel of lower air flow channel converges after coolant flow channel reaches upper air flow channel, and under the compressing of outlet deflector It is flowed out after poly- by outlet section.
Further, the inducer and outlet section are distributed in power battery pack two sides up and down, inducer and coolant flow channel Direction is vertical, and outlet section is parallel with coolant flow channel direction, the entire L-shaped structure of cooling system.
Further, the width of the inducer and outlet section and import deflector, outlet deflector it is of same size.
Further, in the cooling system, the spacing of coolant flow channel is not exactly the same, it is assumed that runner number be it is N number of, From inducer to outlet section direction, the number of coolant flow channel is respectively No. 1, No. 2 ... No. N, when N is odd number, make No. 1 to (N- 1)/No. 2 runner spacing is higher than uniform flow path standard value, and (N+1)/No. 2 runner spacing is equal to uniform flow path standard value, (N+3)/2 Number to N runner spacing be lower than uniform flow path standard value；When N be even number when, make No. 1 to N/2 runner spacing be higher than uniform flow Road standard value, No. N/2+1 to N runner spacing is lower than uniform flow path standard value.
The utility model compared with prior art, is had the following advantages and beneficial effects:
L-type runner cooling system provided by the utility model for power battery pack heat dissipation is guaranteeing system bulk not Under the premise of change, by changing the distribution of coolant flow channel spacing, the air mass flow distribution between coolant flow channel is improved, to guarantee The consistency of radiating condition between battery achievees the purpose that reduce the battery pack temperature difference and hot(test)-spot temperature；In addition, between non-equidistant runner Away from the distribution for only changing pressure drop between runner, but the overall presure drop between inlet and outlet is not increased substantially, because whole without increasing The power consumption of a system.
Detailed description of the invention
Fig. 1 is a kind of stereochemical structure signal of the L-type runner cooling system for power battery pack heat dissipation of the utility model Figure.
Fig. 2 is a kind of front view of the L-type runner cooling system for power battery pack heat dissipation of the utility model.
Fig. 3 is front view of the utility model embodiment for the L-type runner cooling system of power battery pack heat dissipation.
Wherein, 1- inducer, 2- import deflector, 3- power battery pack, 4- export deflector, 5- outlet section, 6- cooling Runner.
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model Mode is without being limited thereto.
Embodiment:
Present embodiments provide a kind of L-type runner cooling system for power battery pack heat dissipation, the solid of the system Structural schematic diagram as shown in Figure 1, front view as shown in Fig. 2, include inducer (1), import deflector (2), power battery pack (3), deflector (4), outlet section (5) and coolant flow channel (6), import deflector (2) and outlet deflector (4) parallelly distribute on are exported In the two sides up and down for keeping a fixed spacing with power battery pack (3), the spacing is respectively formed air flow channel up and down, with power electric Coolant flow channel (6) perpendicular relationship that spacing in pond group (3) between each neighboring unit cell is formed, the coolant flow channel (6) It is parallel to each other, inducer (1) is connect with import deflector (2), and outlet section (5) is connect with outlet deflector (4), inducer (1) With outlet section (5) perpendicular relationship, the entire L-shaped structure of cooling system, air enters import deflector by inducer (1) (2) it after reaching lower air flow channel, is oppressed by import deflector (2) and enters the coolant flow channel (6) vertical with lower air flow channel, through cold But it in runner (6) arrival after air flow channel, and passes through after being converged under the compressing of outlet deflector (4) and is flowed out by outlet section (5).
Wherein, the inducer (1) and outlet section (5) are distributed in power battery pack (3) two sides up and down, inducer (1) with Coolant flow channel (6) direction is vertical, and outlet section (5) is parallel with coolant flow channel (6) direction, the entire L-shaped structure of cooling system.
The width phase of the width of the inducer (1) and outlet section (5) and import deflector (2), outlet deflector (4) Together.
In the cooling system, the spacing of coolant flow channel (6) is not exactly the same, it is assumed that runner number be it is N number of, from import Section (1) arrives outlet section (5) direction, and the number of coolant flow channel is respectively No. 1, No. 2 ... No. N, when N is odd number, make No. 1 to (N- 1)/No. 2 runner spacing is higher than uniform flow path standard value, and (N+1)/No. 2 runner spacing is equal to uniform flow path standard value, (N+3)/2 Number to N runner spacing be lower than uniform flow path standard value；When N be even number when, make No. 1 to N/2 runner spacing be higher than uniform flow Road standard value, No. N/2+1 to N runner spacing is lower than uniform flow path standard value.
Consider L-type runner cooling system as shown in Figure 3: the density of battery is 2700kg/m3, thermal capacitance 900J/ (kgK), thermal conductivity is 240W/ (mK)；Battery size is 16mm × 65mm × 151mm, and number is 12；System inlets section Depth of section (win) and outlet section depth of section (wout) it is 20mm, 13 coolant flow channels are formed between battery, if runner spacing is equal Even, uniform flow path standard value is 3mm；The utility model uses non-equidistant runner, and 1~No. 6 runner spacing is 3.7mm, No. 7 runners For 3mm, 8~13 runner spacing are 2.3mm；Import cooling air temperature is 300K, flow 0.012m3/s。
The non-equidistant L-type cooling system of equidistant L-type cooling system and the utility model is now calculated using method for numerical simulation Temperature field.Can find equidistant cooling system by data and the corresponding battery pack temperature difference of the utility model be respectively 11.1K and The non-equidistant cooling system battery temperature difference of 4.4K, the utility model reduce 60%；The battery hot(test)-spot temperature of two kinds of cooling systems Respectively 320.5K and 315.7K, the non-equidistant L-type cooling system battery hot(test)-spot temperature of the utility model is compared to equidistant structure System has dropped 4.8K.In addition, the inlet outlet pressure differential of the utility model and traditional isometry systems is respectively 43.8Pa and 42.3Pa, The two is not much different, and illustrates that the non-equidistant L-type runner of the utility model drives the power consumption of cooling air opposite and equidistant cooling system System, which has no, to be obviously increased.
The above, only the utility model patent preferred embodiment, but the protection scope of the utility model patent is simultaneously Not limited to this, anyone skilled in the art is in the range disclosed in the utility model patent, according to this The technical solution of utility model patent and its inventive concept are subject to equivalent substitution or change, belong to the guarantor of the utility model patent Protect range.

Claims (4)

1.一种用于动力电池组散热的L型流道冷却系统，其特征在于：所述系统包括进口段、进口导流板、动力电池组、出口导流板、出口段和冷却流道，进口导流板和出口导流板平行分布在与动力电池组保持一定间距的上下两侧，所述间距分别形成上下空气流道，与动力电池组中各个相邻单体电池间的间距形成的冷却流道呈垂直关系，所述冷却流道相互平行，进口段与进口导流板连接，出口段与出口导流板连接，进口段与出口段呈垂直关系，整个冷却系统呈“L”型结构，空气由进口段进入进口导流板到达下空气流道后，由进口导流板压迫进入与下空气流道垂直的冷却流道，经冷却流道到达上空气流道后，又在出口导流板的压迫下汇聚后经由出口段流出。1. An L-shaped flow channel cooling system for heat dissipation of a power battery pack, characterized in that: the system comprises an inlet section, an inlet baffle, a power battery pack, an outlet baffle, an outlet section and a cooling flow channel, The inlet guide plate and the outlet guide plate are distributed in parallel on the upper and lower sides with a certain distance from the power battery pack. The cooling channels are in a vertical relationship, the cooling channels are parallel to each other, the inlet section is connected with the inlet guide plate, the outlet section is connected with the outlet guide plate, the inlet section is in a vertical relationship with the outlet section, and the entire cooling system is in an "L" shape Structure, after the air enters the inlet guide plate from the inlet section and reaches the lower air flow channel, it is forced by the inlet guide plate into the cooling flow channel perpendicular to the lower air flow channel. Under the pressure of the flow plate, it converges and flows out through the outlet section. 2.根据权利要求1所述的一种用于动力电池组散热的L型流道冷却系统，其特征在于：所述进口段和出口段分布在动力电池组上下两侧，进口段与冷却流道方向垂直，出口段与冷却流道方向平行，整个冷却系统呈“L”型结构。2. An L-shaped flow channel cooling system for power battery pack heat dissipation according to claim 1, characterized in that: the inlet section and the outlet section are distributed on the upper and lower sides of the power battery pack, and the inlet section is connected to the cooling flow The direction of the channel is vertical, the outlet section is parallel to the direction of the cooling channel, and the entire cooling system is in an "L"-shaped structure. 3.根据权利要求1所述的一种用于动力电池组散热的L型流道冷却系统，其特征在于：所述进口段和出口段的宽度与进口导流板、出口导流板的宽度相同。3 . The L-shaped flow channel cooling system for power battery pack heat dissipation according to claim 1 , wherein the width of the inlet section and the outlet section is the same as the width of the inlet guide plate and the outlet guide plate. 4 . same. 4.根据权利要求1-3任一所述的一种用于动力电池组散热的L型流道冷却系统，其特征在于：在所述冷却系统中，冷却流道的间距不完全相同，假设流道数目为N个，从进口段到出口段方向，冷却流道的编号分别为1号、2号，…N号，当N为奇数时，使1号至(N-1)/2号流道间距高于均匀流道标准值，(N+1)/2号流道间距等于均匀流道标准值，(N+3)/2号至N号流道间距低于均匀流道标准值；当N为偶数时，使1号至N/2号流道间距高于均匀流道标准值，N/2+1号至N号流道间距低于均匀流道标准值。4. The L-shaped flow channel cooling system for heat dissipation of a power battery pack according to any one of claims 1-3, characterized in that: in the cooling system, the spacing of the cooling flow channels is not exactly the same, assuming The number of runners is N. From the inlet section to the outlet section, the numbers of the cooling runners are No. 1, No. 2, ... N. When N is an odd number, make No. 1 to (N-1)/No. 2 The runner spacing is higher than the standard value of the uniform runner, the spacing of the (N+1)/2 runners is equal to the standard value of the uniform runner, and the distance between the (N+3)/2 to N runners is lower than the standard value of the uniform runner ; When N is an even number, the distance between No. 1 and No. N/2 runners is higher than the standard value of uniform runners, and the distance between No. 1 and No. N runners from N/2+1 to No. N is lower than the standard value of uniform runners.
CN201821772372.6U 2018-10-30 2018-10-30 A kind of L-type runner cooling system for power battery pack heat dissipation Active CN209001080U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109301394A (en) * 2018-10-30 2019-02-01 华南理工大学 An L-shaped runner cooling system for heat dissipation of power battery pack
CN112382803A (en) * 2020-11-11 2021-02-19 上饶华宇智航动力能源有限公司 Power battery pack system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109301394A (en) * 2018-10-30 2019-02-01 华南理工大学 An L-shaped runner cooling system for heat dissipation of power battery pack
CN112382803A (en) * 2020-11-11 2021-02-19 上饶华宇智航动力能源有限公司 Power battery pack system
CN112382803B (en) * 2020-11-11 2022-05-31 合肥华宇智航动力能源有限公司 Power battery pack system

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