KR20050007648A - Battery pack tray for hybrid electric vehicles and temperature management method thereof - Google Patents

Battery pack tray for hybrid electric vehicles and temperature management method thereof Download PDF

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Publication number
KR20050007648A
KR20050007648A KR20030047161A KR20030047161A KR20050007648A KR 20050007648 A KR20050007648 A KR 20050007648A KR 20030047161 A KR20030047161 A KR 20030047161A KR 20030047161 A KR20030047161 A KR 20030047161A KR 20050007648 A KR20050007648 A KR 20050007648A
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KR
South Korea
Prior art keywords
module
battery
tray
battery pack
temperature
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KR20030047161A
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Korean (ko)
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KR100535393B1 (en
Inventor
임재환
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현대자동차주식회사
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Priority to KR20030047161A priority Critical patent/KR100535393B1/en
Publication of KR20050007648A publication Critical patent/KR20050007648A/en
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Publication of KR100535393B1 publication Critical patent/KR100535393B1/en

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    • Y02E60/12

Abstract

Battery pack tray for a hybrid electric vehicle of the present invention, by reducing the volume to facilitate the vehicle package, to maximize the effect of the cooling fan to reduce the temperature variation, thereby improving the life of the battery pack; A tray body 1 for connecting a plurality of battery cells in series to form a module, arranging the modules in a plurality on the same plane to form a module layer, and forming the module layer into a plurality of stacked structures; A cooling fan 3 embedded above one side of each layer so as to separate and form air flows a and b formed in each layer from the lower side of the tray body to the upper side of the other one module; An air inlet 11 provided below the cooling fan on the opposite side; And a battery management system 5 connected to the dummysters 13 provided at equal intervals in each module layer so as to control the cooling fan.

Description

BATTERY PACK TRAY FOR HYBRID ELECTRIC VEHICLES AND TEMPERATURE MANAGEMENT METHOD THEREOF}

The present invention relates to a battery pack tray for a hybrid electric vehicle and a thermal management method thereof, and more particularly, to reduce a volume by facilitating a vehicle package and maximizing the effect of a cooling fan, thereby reducing the temperature variation. The present invention relates to a battery pack tray for a hybrid electric vehicle and a thermal management method thereof for improving the service life of the battery pack.

Generally, a power source of a hybrid electric vehicle is composed of an engine driven by gasoline and diesel and a battery system for driving a motor by an auxiliary power source. Unlike the auxiliary battery, the battery system has a large voltage range and selects and uses a battery with excellent output performance and lifespan. Therefore, the battery system is combined with a battery management system (BMS) for safety. Includes system components. Therefore, such a battery system is attached to the trunk of a vehicle or the rear seat side.

Panasonic nickel-hydrogen battery system of Japan is largely divided into module battery part, battery management system and parts part. In this module battery, 20 cells are connected in series, and various components and a battery management system are mounted on the end side of the battery compartment. In addition, the cooling fan is a suction type is mounted on the outside of the battery pack is configured to operate when the temperature of the module battery rises above a certain level.

The nickel-hydrogen battery system is mounted at the bottom of the trunk of a hybrid electric vehicle. Since there is a motor control unit (MCU) on the side of the system, most of the trunk space is occupied by this battery system. Therefore, the utilization of the trunk space is reduced, it is necessary to reduce the battery system in the same specification. In addition, the cooling fan is a suction type and operates when the temperature of the module battery rises above a certain level to cool the battery module. However, the cooling fan has a primary purpose of eliminating the temperature variation rather than cooling the battery module due to the characteristics of the nickel-hydrogen battery. However, this nickel-hydrogen battery system does not have a good effect on the temperature variation of the battery module as well as the cooling effect because the cooling fan is mounted on the middle side portion of the system.

Therefore, the present invention is to solve the above problems, an object of the present invention is to reduce the volume to facilitate the vehicle package, to maximize the effect of the cooling fan to reduce the temperature variation, thereby the life of the battery pack To provide a battery pack tray and a heat management method for a hybrid electric vehicle to improve the.

1 is a schematic perspective view of a battery pack tray for a hybrid electric vehicle according to the present invention.

2 is a perspective view of a battery pack tray.

3 is a planar air flow chart of the battery pack tray.

4 is a vertical air flow chart of the battery pack tray.

5A is a side view of a battery cell.

5B is a front view of a battery cell.

6 is a flow chart of a thermal management method of a battery pack tray for a hybrid electric vehicle according to the present invention.

7 is a control flowchart of the cooling pen.

* Description of the symbols for the main parts of the drawings *

1: tray body 3: cooling fan

5: battery management system 7: battery cell

7a, 7b: protrusion 9: floor partition

11: air inlet 113: dummy

a, b: air flow

In the battery pack tray for a hybrid electric vehicle according to the present invention, a plurality of battery cells are connected in series to form a module, and the modules are arranged in a plurality in the same plane to form a module layer, and the module layers are stacked in a plurality. A tray body formed into a structure;

A cooling fan embedded above one side of each layer to separate and form an air flow formed in each layer from the lower side of the tray body to the upper side of the other one module;

An air inlet provided below the cooling fan; And

And a battery management system coupled to the dummyster to control the cooling fan.

The battery cells preferably have protrusions on their sides to form a smooth air flow between adjacent battery cells connected in series.

The air passage formed below the battery cell so as to smoothly flow the air is preferably formed to be inclined from the air inlet side to the cooling fan side.

The tray body preferably includes a layer partition that partitions the tray body into multiple layers.

It is preferable that the laminated structure is formed in a two-layer structure.

The dummyster is preferably arranged in a plurality of equal intervals in each module layer.

The battery management system is preferably provided outside the front of the tray body.

In addition, the thermal management method of a battery pack tray for a hybrid electric vehicle according to the present invention,

A temperature sensing step by a dummyster disposed in each module layer;

Applying a temperature algorithm of the battery management system according to the sensing temperature of the step; And

Controlling the cooling fan according to the temperature of the step and the deviation thereof.

The temperature algorithm of the battery management system includes, after engine startup, a hardware setup and software initialization step;

A checking step of checking a maximum temperature Tmax and a change temperature ΔT of the module;

A first determination step of determining whether ΔT is above 5 ° C. or Tmax is above 38 ° C. from the sensing temperature of the dummyster;

Sending a normal signal to the hybrid control unit (HCU) after displaying green if the first determination step is not satisfied;

If the first determination step is satisfied, operating a yellow display and a cooling fan and then sending a warning signal to the HCU;

A second determination step of determining whether ΔT is greater than 7 ° C. or Tmax is greater than 45 ° C. after the warning step; And

And if the second determination step is not satisfied, returning to the first determination step, and if the second determination step is satisfied, operating the red display and the cooling fan, and then sending a fault signal to the HCU and return control.

The change temperature ΔT is preferably set to the difference between the maximum temperature Tmax and the average temperature of the module or the difference between the average temperature and the minimum temperature Tmin of the module.

Advantages and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

1 is a schematic perspective view of a battery pack tray for a hybrid electric vehicle according to the present invention, which includes a tray body 1, a cooling fan 3 embedded in one side thereof, and a battery management system 5.

This tray body 1 is formed to house a plurality of battery cells 7, as shown in FIGS. 2 and 3. The plurality of battery cells 7 are connected in series to each other to form one module.

2 and 3 illustrate a module formed of ten battery cells 7. The battery pack is composed of 12 modules, and forms a laminated structure by a plurality of module layers as shown in FIG. 4, and forms a battery system having a nominal voltage of 144V and 7AH. One module layer formed on the same plane is formed of six modules.

The battery cell 7 has protrusions 7a and 7b on its side as shown in Figs. 5A and 5B. The protrusions 7a and 7b are provided in plural and are arranged adjacent to each other to form an air passage between adjacent battery cells 7 connected in series.

The tray body 1 incorporating the battery cell 7 has a layer partition 9 as shown in FIG. This layer partition 9 partitions the tray body 1 into multiple layers so that the modules can be incorporated into a multilayer structure. The layer partitions 9 may be provided in an appropriate number depending on the size of the battery cells 7 and the number of the built-in battery cells 7, and only one is provided in this embodiment. The tray body 1 is thus divided into two layers. The stack structure of the tray body 1 can reduce the volume of the existing battery pack by about 2/3.

Each layer of the tray body 1 is provided with the cooling fan 3 independently. This cooling fan 3 forms an air flow a, b in the tray body 1 from the lower side of the right module to the upper side of the left module, as shown in FIGS. 3 and 4. The air streams a and b are formed independently in each layer to cool the battery cells 7 of each module to a uniform temperature.

According to the operation of the cooling fan 3, it is preferable that an air inlet 11 is formed below the opposite side of the cooling fan 3 such that the air flows a and b are smoothly formed. Generally, two cooling fans 3 are provided above each layer, and air inlets 11 are preferably provided below each layer.

In addition, it is preferable that the air passage formed under the battery cell 7 so as to smoothly flow the air flows a and b is inclined from the air inlet 11 side to the cooling fan 3 side. Accordingly, the cooling air is naturally discharged to the outlet 12 through the cooling fan 3 at the air inlet 11 side by the driving of the cooling fan 3 to cool the battery cell 7.

In order to control this cooling fan 3, the dummyster 13 is used. As shown in FIG. 2, the dummyster 13 is configured in plural to sense the temperatures of the plurality of battery cells 7, respectively. And a plurality of dummysters 13 are arranged at equal intervals in each module layer, it is possible to minimize the temperature deviation between the battery cells 7 by sensing the temperature of each battery cell (7).

The dummyster 13 and the cooling fan 3 are electrically connected to the battery management system 5. The battery management system 5 is configured to control the driving of each cooling fan 3 corresponding thereto according to the sensed temperature of each dummyster 13, and is provided outside the front of the tray body 1.

In the battery pack tray for a hybrid electric vehicle configured as described above, the cooling fan 13 is controlled by the flowcharts shown in FIGS. 6 and 7.

Each dummyster 13 senses the temperature of each battery cell 7 corresponding to the disposed position. The sensed signal is sent to the battery management system 5. The battery management system 5 applies a temperature algorithm as shown in FIG. 7 according to the sensing temperature. By applying this algorithm, the battery management system 5 independently controls the cooling fan 3 in accordance with the temperature and temperature deviation of the battery cell 7 and the module.

That is, the battery management system 5 performs hardware setup and software initialization after the engine starts, and checks the maximum temperature Tmax and the change temperature ΔT of the module from the sensing signals. This change temperature ΔT is set by the difference between the maximum temperature Tmax and the average temperature of the module or the difference between the average temperature and the minimum temperature Tmin of the module.

The battery management system 5 performs a first determination step of determining whether the change temperature ΔT is above 5 ° C. or the maximum temperature Tmax of the module is above 38 ° C. from the sensing temperature of the dummyster 13. If the first judgment step is not satisfied, a green signal is displayed and then a normal signal is sent to the HCU. If the first judgment step is satisfied, a yellow signal and a cooling fan 3 are operated, and then a warning signal is sent to the HCU.

The battery management system 5 performs a second determination step of determining whether the change temperature ΔT is greater than 7 ° C or the maximum temperature Tmax of the module is more than 45 ° C after the warning step. If the second judging step is not satisfied, the process returns to the first judging step. If the second judging step is satisfied, the red display and the cooling fan 3 are independently operated, and then a fault signal is sent to the HCU and return control is performed.

As the cooling fan 3 is driven, air flows a and b are generated inside the battery pack. These air flows a and b are formed while passing from the lower side to the upper side between the grids of the battery cells 7 to maximize the cooling effect by the air.

The driving of the cooling fan 3 minimizes the temperature variation inside the tray body 1 of the laminated structure. Therefore, the battery cell 7 and its module life are improved.

As described above, the present invention facilitates the vehicle package by reducing the volume of the battery pack by embedding the battery cell modules in the stack body in a stacked structure, and providing a plurality of cooling fans on one side of the tray to adjust the temperature of the battery cells in each part. By sensing and driving the cooling fan independently, it is possible to maximize the effect of the cooling fan to reduce the temperature variation, thereby improving the life of the battery pack.

Claims (10)

  1. A tray body for connecting a plurality of battery cells in series to form a module, arranging a plurality of the modules in the same plane to form a module layer, and forming a module structure in a stacked structure for forming a plurality of module layers;
    A cooling fan embedded above one side of each layer to separate and form an air flow formed in each layer from the lower side of the tray body to the upper side of the other one module;
    An air inlet provided below the cooling fan; And
    Battery pack tray for a hybrid electric vehicle including a battery management system connected to the dummyster to control the cooling fan.
  2. The method according to claim 1,
    The battery cell is a battery pack tray for a hybrid electric vehicle, characterized in that the projection provided on its side to form a smooth air flow between the adjacent battery cells connected in series.
  3. The method according to claim 1 or 2,
    The air passage formed in the lower side of the battery cell so that the air flows smoothly, the battery pack tray for a hybrid electric vehicle, characterized in that formed inclined from the air inlet side to the cooling fan side.
  4. The method according to claim 1,
    The tray body is a battery pack tray for a hybrid electric vehicle, characterized in that it comprises a layer partition for partitioning the tray body into multiple layers.
  5. The method according to claim 1,
    The laminated structure is a battery pack tray for a hybrid electric vehicle, characterized in that formed in a two-layer structure.
  6. The method according to claim 1,
    The dummyster is a battery pack tray for a hybrid electric vehicle, characterized in that arranged in a plurality of equal intervals in each module layer.
  7. The method according to claim 1,
    The battery management system is a battery pack tray for a hybrid electric vehicle, characterized in that provided on the front outside of the tray body.
  8. Sensing the temperature by the dummyster disposed on the uppermost module layer;
    Applying a temperature algorithm of the battery management system according to the sensing temperature of the step; And
    The method of thermal management of a battery pack tray for a hybrid electric vehicle comprising the step of controlling the cooling fan according to the temperature and the deviation of the step.
  9. The method according to claim 8,
    The temperature algorithm of the battery management system includes, after engine startup, a hardware setup and software initialization step;
    A checking step of checking a maximum temperature Tmax and a change temperature ΔT of the module;
    A first determination step of determining whether ΔT is above 5 ° C. or Tmax is above 38 ° C. from the sensing temperature of the dummyster;
    Sending a normal signal to the HCU after displaying green if the first determination step is not satisfied;
    If the first determination step is satisfied, operating a yellow display and a cooling fan and then sending a warning signal to the HCU;
    A second determination step of determining whether ΔT is greater than 7 ° C. or Tmax is greater than 45 ° C. after the warning step;
    And if the second determination step is not satisfied, returning to the first determination step, and if the second determination step is satisfied, operating the red display and the cooling fan, and then sending a fault signal to the HCU and returning control. Thermal management method of battery pack tray for battery.
  10. The method according to claim 9,
    The change temperature (ΔT) is a thermal management method of a battery pack tray for a hybrid electric vehicle, characterized in that it is set to the difference between the maximum temperature (Tmax) and the average temperature of the module or the average temperature and the minimum temperature (Tmin) of the module.
KR20030047161A 2003-07-11 2003-07-11 Battery pack tray for hybrid electric vehicles and temperature management method thereof KR100535393B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20030047161A KR100535393B1 (en) 2003-07-11 2003-07-11 Battery pack tray for hybrid electric vehicles and temperature management method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20030047161A KR100535393B1 (en) 2003-07-11 2003-07-11 Battery pack tray for hybrid electric vehicles and temperature management method thereof

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KR20050007648A true KR20050007648A (en) 2005-01-21
KR100535393B1 KR100535393B1 (en) 2005-12-08

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080740A1 (en) * 2004-11-02 2006-08-03 Lg Chem, Ltd. Process for controlling temperature of battery pack
WO2011000826A1 (en) * 2009-06-30 2011-01-06 Siemens Aktiengesellschaft Method for cooling battery packs and battery pack divided into modules
WO2011021843A3 (en) * 2009-08-20 2011-06-30 주식회사 엘지화학 Battery pack having a novel cooling structure
WO2012165781A3 (en) * 2011-05-31 2013-01-24 주식회사 엘지화학 Battery cooling system and battery rack applied thereto
WO2012173351A3 (en) * 2011-06-13 2013-04-04 주식회사 엘지화학 Battery pack having improved uniformity in distribution of refrigerant
KR101256296B1 (en) * 2010-12-30 2013-04-18 주식회사 포스코아이씨티 Battery System
DE102013216513A1 (en) * 2013-08-21 2015-02-26 Volkswagen Aktiengesellschaft Device for conditioning a battery pack
US9385354B2 (en) 2010-01-26 2016-07-05 Samsung Sdi Co., Ltd. Battery pack for a vehicle

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080740A1 (en) * 2004-11-02 2006-08-03 Lg Chem, Ltd. Process for controlling temperature of battery pack
WO2011000826A1 (en) * 2009-06-30 2011-01-06 Siemens Aktiengesellschaft Method for cooling battery packs and battery pack divided into modules
US9537187B2 (en) 2009-08-20 2017-01-03 Lg Chem, Ltd. Battery pack having novel cooling structure
KR101143279B1 (en) * 2009-08-20 2012-05-11 주식회사 엘지화학 Battery Pack Having Novel Cooling Structure
US9178253B2 (en) 2009-08-20 2015-11-03 Lg Chem, Ltd. Battery pack having novel cooling structure
JP2013502688A (en) * 2009-08-20 2013-01-24 エルジー・ケム・リミテッド Battery pack with new cooling structure
WO2011021843A3 (en) * 2009-08-20 2011-06-30 주식회사 엘지화학 Battery pack having a novel cooling structure
US9385354B2 (en) 2010-01-26 2016-07-05 Samsung Sdi Co., Ltd. Battery pack for a vehicle
KR101256296B1 (en) * 2010-12-30 2013-04-18 주식회사 포스코아이씨티 Battery System
KR101358762B1 (en) * 2011-05-31 2014-02-10 주식회사 엘지화학 Battery cooling system and Battery rack applied for it
EP2704247A4 (en) * 2011-05-31 2015-02-25 Lg Chemical Ltd Battery cooling system and battery rack applied thereto
EP2704247A2 (en) * 2011-05-31 2014-03-05 LG Chem, Ltd. Battery cooling system and battery rack applied thereto
US8986863B2 (en) 2011-05-31 2015-03-24 Lg Chem, Ltd. Battery cooling system and battery rack applied to the same
WO2012165781A3 (en) * 2011-05-31 2013-01-24 주식회사 엘지화학 Battery cooling system and battery rack applied thereto
WO2012173351A3 (en) * 2011-06-13 2013-04-04 주식회사 엘지화학 Battery pack having improved uniformity in distribution of refrigerant
US9537186B2 (en) 2011-06-13 2017-01-03 Lg Chem, Ltd. Battery pack providing improved distribution uniformity in coolant
DE102013216513A1 (en) * 2013-08-21 2015-02-26 Volkswagen Aktiengesellschaft Device for conditioning a battery pack

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