A kind of electrokinetic cell system and its control method based on heat conductive silica gel
Technical field
The present invention relates to new-energy automobile fields, more particularly to the heat dissipation and control of the electrokinetic cell system based on heat conductive silica gel
Method processed.
Background technology
New-energy electric vehicle refers to that the vehicle of wheels travel is driven with motor using vehicle power supply as power.Due to new energy
For source electric car using electric power as power, effect on environment is small, and foreground is had an optimistic view of extensively, also complies with novel energy strategic requirement.So
And technically there are many problems for needing to overcome in new-energy automobile, be not only structure side at present as new research direction
Face, it is electric with software system management in terms of suffer from many problems and need to solve.In addition to this, especially in new energy vapour
The key position of vehicle --- battery, there is many technical barriers.Because New-energy electric vehicle is using electric power as power, battery
Performance, the management system of battery directly affect the performance of New-energy electric vehicle.The battery that new-energy automobile uses at present has lead
Acid accumulator, lithium ion battery, nickel-metal hydride battery, nickel-cadmium cell and sodium-sulphur battery etc., and respectively having for these batteries is excellent
Point but also there is a variety of disadvantages.The long rising for necessarily leading to battery temperature of New-energy electric vehicle ETAD expected time of arrival and departure, battery temperature
Rising battery performance can be caused to reduce, to reduce the performance of New-energy electric vehicle.If the performance of only battery it is up to standard and
It is also that not all right, outstanding battery management system can in time accurately will be electric to be not equipped with outstanding battery management system
The state in pond is reflected to technical staff, technical staff can be made accurately to make operation by these information to control new energy vapour
Vehicle, such as control the rotating speed of motor, speed and whether continue driving etc..And outstanding battery management system makes automobile can be with
Very easily kinetic energy when recycling descending can allow battery to be maintained at good working order to reach energy-efficient purpose,
It does not overcharge, cross and put, extend its service life, reduce cost, can timely adjust the working condition of multiple power sources, make
The state coordinated generally in one, extends the service life of vehicle.However, an outstanding battery management system not only needs
Outstanding program composition, it is also desirable to which outstanding hardware is supported, however these are all technical difficulties at present.
In future, electric vehicle will necessarily become the widely used vehicles, so making great efforts to improve dissipating for battery at present
Thermal design is extremely significant, and structure arrangement, the material selection of heat dissipation are all that needs are well-designed.Patent of invention
CN201620079215.1 proposes a kind of power battery module, there is deficiency existing for the patent of invention:1)In order to power electric
Pond module radiates, and at least one heat-dissipating pipe is arranged in the side of power battery, and be connected in the radiating part of heat-dissipating pipe
A few cooling fin, such design structure is not compact enough, and the volume of power battery module can be caused larger;2)Radiation tube structure with heat
Not enough securely, jolting for being generated in the course of normal operation of automobile can be such that heat-dissipating pipe loosens to fail.
Invention content
In view of the deficiencies of the prior art mentioned above, problems solved by the invention is:When existing power battery module work
Heat be unevenly distributed weighing apparatus, radiating efficiency it is low, cannot be automatically-monitored.
To solve the above problems, the technical solution adopted by the present invention is as follows:
A kind of electrokinetic cell system based on heat conductive silica gel, including multiple modules and cooling system;The module includes
The installs case of battery pack and installation battery pack;The battery pack is adhesively fixed by heat conductive silica gel in square by multiple battery cells
Shape structure;The both sides and bottom of the battery pack bond heat conductive silica gel;Thermal conductive silicon between multiple battery cells
Glue is connected with the heat conductive silica gel of the both sides of battery pack and bottom;The cooling system includes multiple cooled plates, water pump, water
Case;The cooled plate is equipped with water inlet pipe and outlet pipe;The heat conductive silica gel of the cooled plate and each battery pack bottom is solid
It is fixed;The water tank is connected with water pump;Multiple cooled plates are sequentially connected in series to water tank by the water pump by cooling water pipe.
Further, the both ends of the battery pack are fixedly clamped by baffle in installs case.
Further, further include high voltage system;The high voltage system includes that the high pressure of multipair positive and negative anodes patches
Part and a high voltage power distributing cabinet;The high-voltage connector of a pair of of positive and negative anodes is installed on each module;The high voltage power distribution
Cabinet is connected the high-voltage connectors of positive and negative anodes on multiple modules by high-voltage line.
Further, further include radiator;The radiator is connected with water tank and high voltage power distributing cabinet respectively.
Further, further include battery management system;The battery management system includes multiple low pressure connectors, Duo Gecong
Control plate, multiple flow controllers, multiple flow sensors, multiple temperature sensors, a master control borad;The low pressure patches
Part is connected with from control plate;It the low pressure connector and is mounted on module from control plate;The flow controller and flow pass
Sensor is mounted on the water inlet pipe of cooled plate;The temperature sensor is mounted on the outlet pipe of cooled plate;Described is multiple
Low pressure connector on module is sequentially connected by low-voltage line and head and the tail are not attached to, and one end is head end module, and the other end is end
Hold module;Low pressure connector on the head end module is connected by low-voltage line with master control borad, low on the end module
Crimp plug-in unit and master control borad disconnection;The master control borad connects the aperture of control water pump by low-voltage line with water pump.
Further, described to be connected from control plate with battery pack by metal connecting piece.
Further, the metal connecting piece is metal plate and conductive column;The metal plate is fixed on installation chamber interior wall;Institute
The conductive column lower end stated is connected with battery pack;Described is fixed on the downside of control plate on conductive column, and upside is fixed on metal plate.
A kind of control method of the electrokinetic cell system according to claim 5 based on heat conductive silica gel, including step
It is as follows:
(1)Signal acquisition:On each module from control plate by flow sensor, temperature sensor acquire water flow and
Temperature signal;
(2)Signal transmits:Flow and temperature signal pass through low pressure connector and low-voltage line from the module of end from control plate
Be transmitted to successively on adjacent module from control plate, transmit successively, until each module on flow and temperature signal reach head end
Module from control plate on, then head end module from control plate flow, the temperature signal on each module are transmitted to master control borad;
(3)Signal processing:Master control borad is compared the temperature of each module, chooses highest temperature in multiple modules and makees
For reduced temperature;
(4)Signal fusing is adjusted:When reduced temperature is less than or equal to minimum temperature standard, master control borad passes through low-voltage line
Control water pump continues to keep original aperture;When reduced temperature is between minimum temperature standard and maximum temperature standard, with
Being gradually increasing for reduced temperature, master control borad is gradually increased aperture by low pressure line traffic control water pump, increases into inbound traffics;Work as comparison
When temperature is more than or equal to maximum temperature standard, master control borad keeps maximum opening by low pressure line traffic control water pump, with maximum
Flow of inlet water works.
Beneficial effects of the present invention
1. the present invention battery pack be adhesively fixed by heat conductive silica gel by multiple battery cells it is in rectangular configuration, battery pack
Both sides and bottom bond heat conductive silica gel, the heat conductive silica gel and the both sides of battery pack between multiple battery cells and leading for bottom
Hot silica gel is connected, and when module discharges work, the battery cell temperature rise in centre position is most fast, temperature highest, in
Between heat conductive silica gel and side heat conduction silicone transfer heat on the lower battery cell of two sides temperature, to make overall thermal
Amount is balanced.The cooling system of the present invention includes multiple cooled plates, water pump, water tank, and cooled plate is equipped with water inlet pipe and outlet pipe, water
Cold plate and the heat conductive silica gel of each battery pack bottom are fixed, and water tank is connected with water pump, and water pump is by cooling water pipe by multiple water coolings
Plate is sequentially connected in series to water tank, is accelerated the heat dissipation and cooling of heat conductive silica gel by cold water plate, is improved radiating efficiency and speed, is extended
The service life of battery and the job stability that ensure that power battery module.
2. the battery management system of the present invention can monitor the temperature and flow of each module, pass through the comparison of temperature, control
The aperture of water pump, monitors temperature in real time, and radiating efficiency higher realizes the real time monitoring of automation, extends making for battery
With the service life and it ensure that the job stability of power battery module.
Description of the drawings
Fig. 1 is the dimensional structure diagram of module of the present invention.
Fig. 2 is the vertical view of module of the present invention.
Fig. 3 is the upward view of module of the present invention.
Fig. 4 is water cooling plate structure schematic diagram of the present invention.
Fig. 5 is present invention integrated connection schematic diagram.
In figure:1-case lid, 2-babinets, 3-cooling water outlet pipe through-holes, 4-outlet pipes, 5-water inlet pipes, 6-is cooling
Water is intake pipe through-hole, 7-high-voltage connectors, 8-low pressure connectors, 9-bolts, 10-baffles, 11-battery cells, in 12-
Between heat conduction silicone, 13-side heat conduction silicones, 14-metal plates, 15-from control plate, 16-nuts, 17-bottom heat conductive silica gels
Layer, 18-cooled plates, 19-flow controllers, 20-flow sensors, 21-temperature sensors, 22-master control borads, 23-is low
Crimping, 24-water pumps, 25-high-voltage lines, 26-cooling water pipes, 27-modules one, 28-modules two, 29-modules three, 30-moulds
Group four, 31-water tanks, 32-radiators, 33-high voltage power distributing cabinets, battery pack-51.
Specific implementation mode
The content of present invention is described in further detail below in conjunction with the accompanying drawings.
As described in figures 1 and 5, a kind of electrokinetic cell system based on heat conductive silica gel, including multiple modules and cooling system.This
Embodiment selects four pieces of modules to be attached assembly, respectively module 1, module 2 28, module 3 29, module 4 30.It is described
Module include battery pack 51 and installation battery pack 51 installs case.Installs case is made of babinet 2 and case lid 1, and case lid 1 can pass through
Bolt 9 is fixed on babinet 2.As shown in Figures 2 and 3, the battery pack 51 passes through thermal conductive silicon gluing by multiple battery cells 11
Knot fixation is in rectangular configuration, specially:Multiple battery cells 11 are bonded by intermediate thermal conductivity layer of silica gel 12, i.e. each two battery list
Heat conductive silica gel is filled between body 11.The both sides and bottom of the battery pack 51 bond heat conductive silica gel, concretely:Battery pack
51 both sides are equipped with side heat conduction silicone 13, and bottom is equipped with bottom heat conduction silicone 17.Multiple battery cells 11 it
Between heat conductive silica gel be connected with the heat conductive silica gel of the both sides of battery pack 51 and bottom, that is to say, that intermediate thermal conductivity layer of silica gel
12, side heat conduction silicone 13, bottom heat conduction silicone 17 are connected.As shown in Fig. 3,4,5, the cooling system includes more
A cooled plate 18, water pump 24, water tank 31.As shown in figs. 1 and 4, the cooled plate 18 is equipped with water inlet pipe 5 and outlet pipe 4.Go out
Water pipe 4 is inserted by cooling water outlet pipe through-hole 3 in cooled plate 18, and water inlet pipe 5 is inserted into water cooling by cooling water inlet pipe through-hole 6
In plate 18.As shown in figure 3, the heat conductive silica gel of 51 bottom of cooled plate 18 and each battery pack, that is, bottom thermal conductive silicon
Glue-line 17 is fixed.As shown in figure 5, the water tank 31 and water pump 24 connect.The water pump 24 is by cooling water pipe 26 by mould
Group 1, module 2 28, module 3 29, a cooled plate 18 on module 4 30 are sequentially connected in series to water tank 31.Specially:Water pump 24
The water inlet pipe 5 of module 1 is connected by cooling water pipe 26, the outlet pipe 4 of module 1 passes through cooling water pipe 26 and module 2 28
Water inlet pipe 5 connect, the outlet pipe 4 of module 2 28 passes through the connection of the water inlet pipe 5 of cooling water pipe 26 and module 3 29, module 3 29
Outlet pipe 4 connected by the water inlet pipe 5 of cooling water pipe 26 and module 4 30, the outlet pipe 4 of module 4 30 passes through cooling water pipe
26 and water tank 31 connect.As shown in figure 3, further preferably, the both ends of the battery pack 51 are fixedly clamped by baffle 10
In installs case, baffle 10 is fixed on box house by bolt 9 and nut 16.
As described in figures 1 and 5, further preferably, the invention also includes high voltage systems.The high voltage system packet
Include the high-voltage connector 7 and a high voltage power distributing cabinet 33 of multipair positive and negative anodes.A pair of of positive and negative anodes are installed on each module
High-voltage connector 7.The high voltage power distributing cabinet 33 passes through 25 series mould set 1 of high-voltage line, module 2 28, module 3 29, module
The high-voltage connector 7 of positive and negative anodes on 4 30.Further preferably, as shown in figure 5, further including radiator 32.The radiator
32 are connected with water tank 31 and high voltage power distributing cabinet 33 respectively, cool down to water tank 31 and high voltage power distributing cabinet 33.
Further include battery management system further preferably as shown in Fig. 1,2,4,5.The battery management system includes
Multiple low pressure connectors 8, it is multiple from control plate 15, multiple flow controllers 19, multiple flow sensors 20, multiple temperature sensors
21, a master control borad 22.As shown in Fig. 2, the low pressure connector 8 and being connected from control plate 15.The low pressure connector 8
It is mounted on module with from control plate 15.As shown in figure 4, the flow controller 19 and flow sensor 20 are mounted on cooled plate
On 18 water inlet pipe 5.The temperature sensor 21 is mounted on the outlet pipe 4 of cooled plate 18.As shown in figure 5, described is more
A module, the present embodiment select the low pressure connector 8 of module 1, module 2 28, module 3 29, module 4 30 to pass through low-voltage line
23 are sequentially connected and are not attached to from beginning to end, and one end is head end module, and head end module is exactly module 1;The other end is end mould
Group, end module are exactly module 4 30.Low pressure connector 8 on the module 1 is connected by low-voltage line 23 and master control borad 22
It connects, 22 disconnection of low pressure connector 8 and master control borad on the module 4 30.The master control borad 22 passes through low-voltage line 23 and water pump
The aperture of 24 connection control water pumps 24.As shown in Fig. 2, further preferably, it is described to pass through metal connecting piece and electricity from control plate 15
Pond group 51 connects.Further preferably, the metal connecting piece is metal plate 14 and conductive column.The metal plate 14 is fixed on installation
On chamber interior wall.The conductive column lower end and battery pack 51 connect.Described is fixed on from 15 downside of control plate on conductive column, upside
It is fixed on metal plate 14.
A kind of control method of the electrokinetic cell system based on heat conductive silica gel, including steps are as follows:(1)Signal acquisition:Often
A module, the as module 1 of the present embodiment, module 3 29, pass through flow on module 4 30 at module 2 28 from control plate 15
Sensor 20, temperature sensor 21 acquire the flow and temperature signal of water.(2)Signal transmits:Flow and temperature signal are from end
Module, as on module 1 from control plate 15 by low pressure connector 8 and low-voltage line 23 be transmitted to successively on adjacent module from
Control plate, transmit successively, until each module on flow and temperature signal reach head end module from control plate on, in this implementation
It is exactly in example:Module 4 30 by thereon temperature and flow signal be sent on module 3 29, the then temperature of itself of module 3 29
The temperature and flow signal of degree and flow signal and module 4 30 are sent to module 2 28 together, and so on, until module
One 27, module 2 28, module 3 29, the temperature flow signal on module 4 30 all reach the slave control panel 15 of module 1
On.Flow, temperature signal on each module is transmitted to master control borad 22 by module 1 then from control plate 15.(3)At signal
Reason:Master control borad 22 is compared the temperature of each module, chooses in multiple modules highest temperature temperature as a comparison.(4)
Signal fusing is adjusted:When reduced temperature is less than or equal to minimum temperature standard, master control borad 22 controls water by low-voltage line 23
Pump 24 continues to keep original aperture;When reduced temperature is between minimum temperature standard and maximum temperature standard, with right
Than being gradually increasing for temperature, master control borad 22 controls water pump 24 by low-voltage line 23 and is gradually increased aperture, increases into inbound traffics;When right
When being more than or equal to maximum temperature standard than temperature, master control borad 22 controls water pump 24 by low-voltage line 23 and keeps maximum opening,
It is worked with maximum flow of inlet water.
In rectangular configuration, battery pack is adhesively fixed by heat conductive silica gel by multiple battery cells 11 for the battery pack 51 of the present invention
51 both sides and bottom bond heat conductive silica gel, the both sides and bottom of heat conductive silica gel and battery pack between multiple battery cells 11
The heat conductive silica gel in portion is connected, and when module discharges work, the battery cell temperature rise in centre position is most fast, temperature highest,
It is transferred heat on the lower battery cell of two sides temperature with side heat conduction silicone by intermediate heat conductive silica gel, to make
Whole heat balance.The cooling system of the present invention includes multiple cooled plates 18, water pump 24, water tank 31, cooled plate 18 be equipped with into
The heat conductive silica gel of water pipe 5 and outlet pipe 4,51 bottom of cooled plate 18 and each battery pack is fixed, and water tank 31 and water pump 24 connect, water
Multiple cooled plates 18 are sequentially connected in series to water tank by pump 24 by cooling water pipe 26, accelerate the heat dissipation of heat conductive silica gel by cold water plate 18
And cooling, radiating efficiency and speed are improved, the service life of battery is extended and ensure that the work of power battery module
Stability.The battery management system of the present invention can monitor the temperature and flow of each module, by the comparison of temperature, control water pump
Aperture, temperature is monitored in real time, radiating efficiency higher realizes the real time monitoring of automation, and extend battery uses the longevity
Order and ensure that the job stability of power battery module.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.