CN206116563U - Column battery is high hot fluid heat transfer device that leads in groups - Google Patents

Abstract

The utility model relates to a column battery is high hot fluid heat transfer device that leads in groups belongs to electric automobile, the hot management area of power battery, and in particular to power battery organizes the increase controlling means that the temperature is harmonious and the lightweight promotes. The device's high heat conduction graphite cover suit is at column battery surface to through the inseparable adhesion of gum, reach the equal nature of temperature that the column battery is good, the column battery concatenates around the adhesion through high heat conduction graphite area in groups and forms one, and high heat conduction graphite takes the heat transfer plate surface bonding of both ends and both sides, is equipped with the water conservancy diversion piece in the heat transfer plate, and the column battery is realized that the heat is leading -in, is derived and transmit through liquid stream in high heat conduction graphite area and the heat transfer plate in groups, reaches battery group heat management changes in temperature temperature control. Thereby further promote battery package lightweight and security, battery cover adorns high heat conduction graphite cover and guarantees the equal nature of each battery temperature, outside both ends heat transfer plate adopts the adverse current to set up and flow in channel water conservancy diversion formation multicavity room, has improved the heat transfer ability, has reduced the heat transfer difference in temperature.

Description

Prismatic battery high heat conduction liquid heat exchange device in groups

Technical field

This utility model belongs to electric automobile, electrokinetic cell field of heat management, more particularly to power battery pack temperature equalization Property and lightweight lifted potentiation control device.

Background technology

Electrokinetic cell is the core component and key technology of electric automobile, battery present in groups it is high-power, extensive and Modular development trend.Cell electrochemical reaction is extremely sensitive for temperature, is to ensure battery performance and cycle life, needs Good heat management temperature is ensured.At present, for the high-power battery of big load adopts liquid stream thermal control structure gradually in groups Become main flow and select scheme, and some representative studies occur with application.2011, Pendergast was attempted 18650 Cell package is dipped in meeting battery cooling needs in water in aluminum Triangle Model, and the experiment is considered as early stage letter Easy electrokinetic cell liquid thermal management scheme.2013, AM General GM have developed the board-like liquid stream heat exchange structure of water-cooled and piece The groups of T-shaped battery bag of formula battery stack, and this kind of heat exchange structure is applied to into the Wo Landa Volt range-extended electrics of Chevrolet On automobile.2014, tesla of the U.S. devised crescent moon cavate liquid stream heat exchange structure and is arranged in inside prismatic battery group, passes through Heat exchanging fluid fluxion strap in cavity walks cell heat, and this kind of heat exchange structure has been applied to Model S pure electric automobile battery bags In.

Aforesaid liquid heat exchange battery bag has preferable cooling effect and temperature consistency, but because liquid stream heat exchange structure prolongs Extend internal battery pack and with each cell surface contact heat-exchanging, cause in battery bag liquid reserves big, liquid medium flow process Long and complex, seal request is high, and battery bag weight is big, is unfavorable for electric automobile lightweight.Additionally, battery bag be subjected to extruding and Under collision, liquid is leaked due to the damage of heat exchange structure and easily cause inside battery bag the safety problems such as battery short circuit.

This utility model is directed to prismatic battery heat management in groups, proposes high heat conduction liquid heat exchange device, and its heat exchanging fluid is not Into between battery with each monomer list pond heat exchange, but by around each battery high heat conduction graphite tape transmit heat, until electric Pond group outside two ends heat transfer plate；Additionally, battery suit high heat conduction graphite cannula, lifts battery circumferential heat-transfer capability, it is ensured that each battery Warm property；Furthermore, arranged using heat transfer plate channel structure and adverse current, improve exchange capability of heat.The graphite material plane thermal conductivity Up to 1500W/mk or so, than copper, aluminum high by 288% and 336% are distinguished, additionally, weight 75% and again lighter respectively than copper, aluminum 25%.Therefore, graphite material high heat conduction and lightweight nature are by the efficient heat transfer energy of strong guarantee high capacity cell heat management in groups Power and lightweight.Meanwhile, liquid flowing internal between battery is the device avoids, liquid capacity in battery bag is reduced, enter one Step reaches battery bag lightweight, reduces battery bag leakage short circuit hidden danger, lifts safety.

Utility model content

Further to lift battery bag lightweight and safety, the utility model proposes a kind of prismatic battery high heat conduction in groups Liquid heat exchange device, its heat exchanging fluid not entered between battery and carry out heat exchange with each monomer list pond, but by around each battery High heat conduction graphite tape transfer heat to set of cells outside two ends heat transfer plate；Meanwhile, battery suit high heat conduction graphite cannula ensures Each battery temperature property；Additionally, outside two ends heat transfer plate is arranged using adverse current and conduit water conservancy diversion forms multi chambered flow, heat exchange is improved Ability, reduces heat transfer temperature difference.

The technical solution of the utility model is described with reference to the drawings as follows：

A kind of prismatic battery high heat conduction liquid heat exchange device in groups, by prismatic battery 1, high heat conduction graphite cannula 2, high heat conduction stone Ink ribbon 3, heat transfer plate and flow deflector 12 are constituted, and the high heat conduction graphite cannula 2 is sleeved on the outer surface of prismatic battery 1, and by gum Tight adhesion, reaches the good temperature of prismatic battery property, and the prismatic battery 1 is in groups by high heat conduction graphite tape 3 around adhesion Concatenation forms string, and the two ends of high heat conduction graphite tape 3 are bonding with the heat transfer plate surface of both sides, and flow deflector 12, post are provided with heat transfer plate Shape battery 1 realizes that heat is imported, derives transmission by liquid stream in high heat conduction graphite tape and heat transfer plate, reaches set of cells heat management cold Warm temperature control.

Flow deflector 12 inside both sides heat transfer plate A4 and heat transfer plate B5, the positive heat exchanging fluid 6 of guiding and reverse heat exchanging fluid 7 Form multipaths and multi-cavity structure, it is ensured that high liquid flow speed and high exchange capability of heat.

The heat transfer plate A4 is provided with heat transfer plate A liquid flow inlets 8 and heat transfer plate A fluid outlets 9, and the heat transfer plate B5 is provided with biography Hot plate B liquid flow inlets 10 and heat transfer plate B fluid outlets 11；

The heat transfer plate A liquid flow inlets 8 and heat transfer plate B liquid flow inlets 10, heat transfer plate A fluid outlets 9 and heat transfer plate B liquid streams Export 11 oppositely arranged, make both sides forward direction heat exchanging fluid 6 and reverse heat exchanging fluid 7 form adverse current, it is ensured that each row prismatic battery with The heat transfer temperature difference of heat exchanging fluid in heat transfer plate, improves the temperature property between each row battery.

Description of the drawings

Fig. 1 prismatic batteries surface high heat conduction graphite is bushing and around structural representation.

Fig. 2 heat exchanging fluids and battery bag heat exchange schematic diagram.

Fig. 3 heat transfer plate internal structure schematic diagrams.

Fig. 4 battery bag three dimensional structure overall schematics.

Fig. 5 set of cells mean temperature changes.

Each feature battery point for measuring temperature temperature during Fig. 6 cooling balances.

The numbering of each part and correspondence title are as follows in figure:

In Fig. 1-4:1- prismatic batteries, 2- high heat conduction graphite cannulas, 3- high heat conduction graphite tapes, 4- heat transfer plate A, 5- heat transfer plate B, 6- forward direction heat exchanging fluids, the reverse heat exchanging fluids of 7-, 8- heat transfer plate A liquid flow inlets, 9- heat transfer plate A fluid outlets, 10- heat transfer plate B Liquid flow inlet, 11- heat transfer plate B fluid outlets, 12- flow deflectors

Specific embodiment

Refering to accompanying drawing, in the present embodiment, high heat conduction graphite cannula 2 is set with the surface of prismatic battery 1, the graphite cannula 2 is carried Gum, can be closely adhered to the surface of prismatic battery 1, ensure the good temperature of each cell 1 property.Additionally, every six segmented columns shape Battery 1 carries out forming string around adhesion by high heat conduction graphite tape 3, and graphite tape two ends are adhered to into both sides biography using gum Hot plate A4 and heat transfer plate B5 surfaces, by high heat conduction graphite tape heat transfer is realized.Meanwhile, positive heat exchanging fluid 6 passes through liquid stream Entrance 8 is entered into and exchanged heat in heat transfer plate A4, and is flowed out by fluid outlet 9；Reversely heat exchanging fluid 7 is entered by liquid flow inlet 10 Enter in heat transfer plate B5 and exchanged heat, and flowed out by fluid outlet 11.Heat transfer plate A4 and heat transfer plate B5 are internally provided with flow deflector 12, guide positive heat exchanging fluid 6 and reverse heat exchanging fluid 7 to form multipaths and multi-cavity structure, it is ensured that high liquid flow speed and height are changed Heat energy power, meets set of cells heat management temperature control needs.

The set of cells heat-exchanger rig proposed for this utility model carries out heat management process relative analyses, as a result such as Fig. 5 Shown, in without cooling procedure, battery mean temperature starts with the heating rate of nearly 4.3 DEG C/min for 46 DEG C from initial temperature 95 DEG C or so high temperature are reached after 23min；In cooling procedure, set of cells heat-exchanger rig is respectively adopted metallic aluminium and high heat conduction graphite Material carries out identical operating mode cooling procedure contrast, it can be seen that the battery bag cooldown rate using high-heat conductivity graphite material is substantially high In adopting metallic aluminium, while the former battery finally cools down equilibrium temperature can be reduced to about 20 DEG C, substantially less than using metallic aluminium Battery bag.Additionally, in set of cells two ends and middle part selected characteristic battery, and survey in these feature battery surfaces arrangement temperature Pilot T1-T8, each cell temperature consistency in analysis battery bag, as a result as shown in Figure 6, it can be seen that new using this practicality In cooling balance, maximum temperature difference is 3.2 DEG C to the set of cells of the set of cells heat-exchanger rig that type is proposed between each feature battery, meets mesh The battery temperature Conformance Assessment index of front maximum temperature difference≤5 DEG C for generally adopting.

Analyze by more than, propose that set of cells heat-exchanger rig ensure that the height of high capacity cell heat management in groups Effect heat exchange demand.Simultaneously as battery bag inside is without liquid flowing, leakage short circuit hidden danger, battery bag lightweight are greatly reduced Further lifted with safety.

Claims (3)

1. a kind of prismatic battery high heat conduction liquid heat exchange device in groups, by prismatic battery (1), high heat conduction graphite cannula (2), high heat conduction Graphite tape (3), heat transfer plate and flow deflector (12) composition, it is characterised in that：

The high heat conduction graphite cannula (2) is sleeved on prismatic battery (1) outer surface, and by gum tight adhesion, reaches column electricity The good temperature in pond property, the prismatic battery (1) forms string by high heat conduction graphite tape (3) around adhesion concatenation in groups, high Conductive graphite band (3) two ends are bonding with the heat transfer plate surface of both sides, and flow deflector (12) is provided with heat transfer plate, and prismatic battery (1) leads to Liquid stream realizes that heat is imported, derives transmission in too high conductive graphite band and heat transfer plate, reaches set of cells heat management temperature control System.

2. a kind of prismatic battery according to claim 1 high heat conduction liquid heat exchange device in groups, it is characterised in that：

Both sides heat transfer plate A (4) and heat transfer plate B (5) internal flow deflector (12), the positive heat exchanging fluid (6) of guiding and reversely heat exchange Fluid (7) forms multipaths and multi-cavity structure, it is ensured that high liquid flow speed and high exchange capability of heat.

3. a kind of prismatic battery according to claim 2 high heat conduction liquid heat exchange device in groups, it is characterised in that：

The heat transfer plate A (4) is provided with heat transfer plate A liquid flow inlets (8) and heat transfer plate A fluid outlets (9), and the heat transfer plate B (5) sets There are heat transfer plate B liquid flow inlets (10) and heat transfer plate B fluid outlets (11)；

The heat transfer plate A liquid flow inlets (8) and heat transfer plate B liquid flow inlets (10), heat transfer plate A fluid outlets (9) and heat transfer plate B liquid Flow export (11) is oppositely arranged, makes both sides forward direction heat exchanging fluid (6) and reverse heat exchanging fluid (7) form adverse current, it is ensured that each colonnade Shape battery and the heat transfer temperature difference of heat exchanging fluid in heat transfer plate, improve the temperature property between each row battery.