CN105548891B - Cell heat test device and cell heat test method - Google Patents
Cell heat test device and cell heat test method Download PDFInfo
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- CN105548891B CN105548891B CN201510868096.8A CN201510868096A CN105548891B CN 105548891 B CN105548891 B CN 105548891B CN 201510868096 A CN201510868096 A CN 201510868096A CN 105548891 B CN105548891 B CN 105548891B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The invention discloses a kind of cell heat test device and methods, it is the heat amount test carried out in an insulating box in tested battery progress charge and discharge process, specifically tested battery is put into a thermal-insulating chamber, utilize a coolant circulation system, heat accumulation is carried out outside the heat derives to thermal-insulating chamber that tested battery is sent out and to coolant liquid, to obtain the heat accumulative consumption being tested in battery progress charge and discharge process.The cell heat test device and method of the present invention can efficiently and accurately measure tested battery and carry out the heat sent out when charge and discharge, and then the thermal safety to know the heat condition of battery or battery pack, carrying out effectively heat management, effectively improve lithium ion battery for electric vehicle, first-hand authentic communication is provided, is had great importance to the heat management and thermal safety of electric vehicle.
Description
Technical field
The present invention relates to accumulator testing field, more particularly to a kind of cell heat test device and cell heat test side
Method.
Background technology
The accurate calorific value for measuring battery has great significance to the heat management and thermal safety of electric vehicle, to management and control
The thermal runaway of battery pack and reasonably implement thermal management policy and then to suffer from indispensable role to the safety of electric vehicle.
If battery-heating buret control is bad, it is most likely that cause the security risks such as explode, is on fire of electric vehicle.Thus, no matter to heat
Management strategy is formulated still for the safety of electric vehicle, and the measurement of battery-heating amount is particularly important.
The calorific value of existing battery knows, generally calculated with model based on.Pass through the thermal models such as emulation, simulation, approximation
Acquired battery-heating amount is difficult to fully demonstrate the thermal process reactor of the complexity such as inside battery Joule heat, reaction heat, thus difficult
Accurately to reflect heat that inside battery distributes, it cannot be to find out battery or the heat condition of battery pack, carry out effective underground heat
Management, the thermal safety for improving lithium ion battery for electric vehicle provide reliable basis.
Invention content
In view of this, the object of the present invention is to provide a kind of cell heat tests can be used for soft bag lithium ionic cell monomer
Device and cell heat test method, to obtain the true calorific value in battery charge and discharge process, to be to find out battery or electricity
The heat condition of Chi Bao carries out effectively heat management, improve lithium ion battery for electric vehicle thermal safety provide reliably according to
According to.
The present invention provides a kind of cell heat test devices, including：
Insulating box；
Thermal-insulating chamber, the thermal-insulating chamber are located in the insulating box；
Water tank group, filling liquid coolant in the water tank group, and be clamped and be tested battery, the water tank group is together with the quilt
Battery is surveyed to be placed in the thermal-insulating chamber；
Water pipe group, the water pipe group are located in insulating box, and the water pipe group connects water tank group, water pump, calorimeter, radiator
It is logical, it is formed by the water tank group by the water pump to the calorimeter, again by the calorimeter to the radiator and by institute
It states radiator and returns to the calorimeter, the again circulation line by the calorimeter to the water tank group so that the coolant exists
It is recycled in the circulation line；
Water pump, the water pump are located in insulating box, and other than the thermal-insulating chamber, for driving in the circulation line
Coolant cycle；
Calorimeter, the calorimeter are located in insulating box, and other than the thermal-insulating chamber, and the heat is flowed through for obtaining
The heat accumulative value of the coolant liquid of table；
Radiator, the radiator are located in insulating box, and other than the thermal-insulating chamber, for that will flow through the radiator
Coolant in entrained heat distribute into insulating box；
At least one temperature sensor is arranged in the tested battery surface, for obtaining the tested battery surface
Temperature information；
Electrode connecting end mouth, the electrode connecting end mouth are located at outside the thermal-insulating chamber and are electrically connected to the tested battery
Lug, the electrode connecting end mouth is for connecting external charging/discharging apparatus, and its shape is designed to multiple warp architecture to increase
The heat dissipation area contacted with water tank group, and heat caused by reduction is connect with the leader cable of charging/discharging apparatus leaks；
Computer, the computer bit are connected to the calorimeter and at least one temperature is passed in outside the insulating box
Sensor, the computer are used to receive temperature information, the reception calorimeter acquired at least one temperature sensor
Acquired heat accumulative value.
Further, the cell heat test device further includes：
Pressure sensor, the pressure sensor are located in the thermal-insulating chamber and are connected to the computer, the pressure
Sensor for obtain the water tank group be applied to the pressure information of the tested battery and send it to the computer into
Row monitoring.
Further, the cell heat test device further includes：
Electrode heat conduction connector, the electrode heat conduction connector are located in the thermal-insulating chamber, the electrode heat conduction connector
One end be connected to the lug of the tested battery, the other end of the electrode heat conduction connector is as the electrode connecting end
Mouthful, electrode heat conduction connector surface covers heat conductive insulating silica gel, and the water tank group is pressed in the heat conductive insulating silica gel.
Further, the water tank group includes lower header and upper water box；Wherein,
The lower header is located at the downside of the tested battery, and the upper water box is located at the upside of the tested battery, institute
Tested battery is stated between the lower header and upper water box；
It is connected to by a hose between the lower header and upper water box so that the coolant liquid in the lower header can pass through institute
It states hose and enters the upper water box；
The lower header opens up water inlet, to connect the water pipe group so that the coolant liquid in the water pipe group can pass through
The water inlet flows into the lower header；
The upper water box opens up water outlet, to connect the water pipe group so that the coolant liquid in the upper water box can pass through
The water outlet flows out the upper water box.
Further, the thermal-insulating chamber offers through-hole compatible with the inlet and outlet, so that positioned at exhausted
The indoor water tank group of heat and water pump, calorimeter, radiator outside thermal-insulating chamber are connected to by the water pipe group.
Further, the water pipe group includes：
Outlet pipe, the outlet pipe are connected between the water outlet of the upper water box and the water inlet of the water pump；
First diversion pipe, first diversion pipe are connected between the water outlet of the water pump and the water inlet of calorimeter；
Second diversion pipe, second diversion pipe are connected to the water inlet of the heat dissipation water delivery nozzle and radiator of the calorimeter
Between；
Third diversion pipe, the third diversion pipe are connected to the water outlet of radiator and the heat dissipation water return outlet of the calorimeter
Between；
Water inlet pipe, the water inlet pipe are connected between the water outlet of the calorimeter and the water inlet of the lower header.
Further, at least one temperature sensor is respectively arranged in the pole of the tested battery surface, tested battery
In ear, upper water box and in lower header, and it is connected to the computer, to obtain the tested battery surface temperature information, be tested
Temperature information in temperature information and lower header in the lug temperature information of battery, upper water box, and acquired temperature information is sent out
Give the computer.
Further, the thermal-insulating chamber includes thermal-insulating chamber ontology and thermal-insulating chamber lid；Wherein,
The thermal-insulating chamber body interior forms the accommodation space of a upper opening, and the water tank group is together with the tested electricity
Pond is placed in the accommodation space；
The thermal-insulating chamber lid is set to the top of the thermal-insulating chamber ontology, and opened under the control of an opening and closing motor,
Close the opening of the accommodation space, wherein the opening and closing motor is electrically connected to the computer, in the control of the computer
Lower opening, the shutoff operation for executing the thermal-insulating chamber lid of system.
Further, the thermal-insulating chamber, which offers, vacuumizes interface to extract adiabatic indoor air dielectric out, and air is avoided to inhale
Receive the heat released from battery.
Cell heat survey is carried out using any one of them cell heat test device as above the present invention also provides a kind of
The method of examination, including：
Tested battery is placed between the water tank group in thermal-insulating chamber, and the lug of tested battery is electrically connected to electrode connection
Port；
External charging/discharging apparatus is connected to the electrode connecting end mouth；
All components in the insulating box carry out initial temperature balance；
Pass through the temperature information of each temperature sensor of computer real-time monitoring；
After the temperature information of each temperature sensor entirely reaches initial temperature and stablizes, pass through computer real-time monitoring
And store temperature information and flow information acquired in the calorimeter；
The water pump is opened to drive the cycle of the coolant in the circulation line；
External charging/discharging apparatus is opened to carry out charge and discharge to the tested battery；
When charge and discharge terminate, and the temperature information of each temperature sensor empties back into initial temperature and maintains a period of time
And/or calorimeter heat accumulative value it is invariable when, stop test；
The heat that the heat accumulative value of calorimeter is discharged as tested battery in charge and discharge process.
From said program as can be seen that the cell heat test device and cell heat test method of the present invention can effectively simultaneously
It accurately measures tested battery and carries out the heat sent out when charge and discharge, and then to know the fever of battery or battery pack
Situation carries out effectively heat management, and then effectively improves the thermal safety of lithium ion battery for electric vehicle, provides first-hand
Authentic communication.
Description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is the cell heat test device cross-sectional structure schematic diagram of the embodiment of the present invention；
Fig. 2 is that battery circumferential regional structure enlarged diagram is tested in Fig. 1；
Fig. 3 is adiabatic indoor longitudinal cross-section structural schematic diagram in the embodiment of the present invention；
Fig. 4 is the method flow diagram that the cell heat of the embodiment of the present invention is tested.
Label declaration
1, cell heat test device
11, insulating box
12, thermal-insulating chamber
121, thermal-insulating chamber ontology
122, thermal-insulating chamber lid
125, it is opened and closed motor
13, water tank group
131, lower header
132, upper water box
14, water pipe group
141, outlet pipe
142, the first diversion pipe
143, the second diversion pipe
144, third diversion pipe
145, water inlet pipe
151, water pump
152, calorimeter
153, radiator
161, temperature sensor
162, pressure sensor
17, electrode connecting end mouth
171, electrode heat conduction connector
18, interface is vacuumized
19, computer
2, it is tested battery
21, lug
211, lug intermediate plate
Specific implementation mode
In order to which the technical features, objects and effects to invention are more clearly understood, now control description of the drawings is of the invention
Specific implementation mode, in the various figures identical label indicate identical part.
Herein, " schematic " expression " serving as example, example or explanation " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical solution.
To make simplified form, part related to the present invention is only schematically shown in each figure, and does not represent it
Practical structures as product.In addition, so that simplified form is easy to understand, there is the portion of identical structure or function in some figures
Part only symbolically depicts one of those, or has only marked one of those.
Herein, "one" is not offered as the quantity of relevant portion of the present invention being limited to " only this ", and " one
It is a " do not indicate that the situation of the quantity " more than one " for excluding relevant portion of the present invention.
Herein, "upper", "lower", "front", "rear", "left", "right" etc. be only used for indicate relevant portion between it is opposite
Position relationship, and the absolute position of these non-limiting relevant portions.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than indicate significance level and sequence and
Existing premise etc. each other.
Herein, the limitation in " equal ", " identical " etc. and non-critical mathematics and/or geometry meaning also includes
It will be appreciated by those skilled in the art that and the error that the permissions such as makes or uses.Unless otherwise indicated, numerical value model herein
It encloses not only including the entire scope in two endpoint, also includes being contained in several subranges therein.
As shown in Figure 1, the cell heat test device 1 of the embodiment of the present invention includes mainly insulating box 11, thermal-insulating chamber 12, water
Case group 13, water pipe group 14, water pump 151, calorimeter 152, radiator 153, temperature sensor 161, pressure sensor 162, electrode
Connectivity port 17 and computer 19.Wherein, the cell heat test device 1 in addition to computer 19 is placed in the insulating box 11
In other building blocks.The thermal-insulating chamber 12 is located in the insulating box 11.The interior filling coolant of the water tank group 13 (such as
Water), and be clamped and be tested battery 2, the water tank group 13 is placed in together with the tested battery 2 in the thermal-insulating chamber.The water pipe group
14 are located in insulating box 11, and water tank group 13, water pump 151, calorimeter 152 are connected to by the water pipe group 14 with radiator 153, are formed
By the water tank group 13 by the water pump 151 to the calorimeter 152, again by the calorimeter 152 to the radiator 153
And the calorimeter 152, the again circulation line by the calorimeter 152 to the water tank group 13 are returned to by the radiator 153,
So that the coolant recycles in the circulation line.The water pump 151 is located in insulating box 11, and is located at the thermal-insulating chamber
Other than 12, the cycle for driving the coolant in the circulation line.The calorimeter 152 is located in insulating box 11, and position
Other than the thermal-insulating chamber 12, the temperature for obtaining the coolant flowed out by the water tank group 13 in the circulation line is believed
It ceases, the temperature information that obtains the coolant for flowing into the water tank group 13 in the circulation line, obtain and flow through the calorimeter 152
Coolant flow information.The radiator 153 is located in insulating box 11, and other than the thermal-insulating chamber 12, and being used for will
Heat entrained in the coolant of the radiator 153 is flowed through to distribute into insulating box 11.161 quantity of the temperature sensor is
It is at least one, it is respectively arranged in 2 surface of tested battery, the temperature information for obtaining 2 surface of tested battery.It is described
Pressure sensor 162 is located in the thermal-insulating chamber 12, and the pressure sensor 162 is applied to institute for obtaining the water tank group 13
It states the pressure information of tested battery 2 and sends it to the computer 19 and be monitored.The electrode connecting end mouth 17 is located at
The thermal-insulating chamber 12 is outer and is electrically connected to the lug 21 of the tested battery 2, and the electrode connecting end mouth 17 is for connecting outside
Charging/discharging apparatus (not shown).The computer 19 is located at outside the insulating box 11, and be connected to the calorimeter 152,
Temperature sensor 161 and pressure sensor 162, the computer 19 is for receiving 161 institute of at least one temperature sensor
The temperature information of acquisition receives temperature information acquired in the calorimeter 152 and flow information and in the tested battery 2
The heat sent out when carrying out charge and discharge according to battery 2 is tested described in the information acquisition received；The computer 19 is additionally operable to lead to
It crosses the pressure sensor 162 and detects the pressure information that the water tank group 13 is applied to the tested battery 2, to ensure the water
Well contacting between case group 13 and the tested battery 2, so that the heat that tested battery 2 is sent out can be passed successfully in time
Pass the coolant liquid in the water tank group 13.
In addition, the cell heat test device 1 further includes electrode heat conduction connector 171.The electrode heat conduction connector
171 are located in the thermal-insulating chamber 12, and one end of the electrode heat conduction connector 171 is connected to the quilt by lug intermediate plate 211
The lug 21 of battery 2 is surveyed, the other end of the electrode heat conduction connector 171 is as the electrode connecting end mouth 17, the electrode
The surface of heat conduction connector 171 covers heat conductive insulating silica gel, and the water tank group 13 is pressed in the heat conductive insulating silica gel.The electricity
Pole heat conduction connector 171 is made of high-quality conductive material and is processed into the more structure of bending the number of turns, so that it is in tested battery 2
It carries out sufficiently rapidly transferring heat to the coolant liquid in water tank group 13 when charge and discharge, while reducing to external charge and discharge
The heat of equipment is transmitted, and reduces thermal loss, heat is avoided to leak.The lug intermediate plate 211 is made of high-quality conductive material, clamping
In lug 21 and it is connected to electrode heat conduction connector 171, to reduce the contact resistance at lug 21.
As shown in Fig. 2, multiple temperature sensors 161 are respectively arranged in the pole on 2 surface of tested battery, tested battery 2
(not shown) in ear 21, water tank group 13, and it is connected to the computer 19, to obtain 2 surface temperature of tested battery
Information, 21 temperature information of lug of tested battery 2, temperature information in water tank group 13, and acquired temperature information is sent to
The computer 19.In a specific embodiment, it is tested 2 surface of battery and is evenly arranged nine temperature sensors 161, two poles
Ear 21 is together with one temperature sensor 161 of each arrangement at lug intermediate plate 211, i.e., at two lugs 21 are together with lug intermediate plate 211
Two temperature sensors 161 are arranged altogether, arrange that two temperature sensors 161, these temperature sensors 161 pass through in water tank group 13
Data line is connected with the computer 19 outside insulating box 11, and the related temperature in periphery of battery 2 is tested using the monitoring in real time of computer 19
Degree.Pressure sensor 162 be adjusted to 2 flush of tested battery, convenient for detection water tank group 13 be applied to 2 surface of tested battery
Pressure.
As shown in figure 3, in the embodiment of the present invention, the water tank group 13 includes lower header 131 and upper water box 132.Wherein, institute
The downside that lower header 131 is located at the tested battery 2 is stated, the upper water box 132 is located at the upside of the tested battery 2, described
Tested battery 2 is between the lower header 131 and upper water box 132.Shown in Fig. 1, Fig. 2, Fig. 3,131 He of the lower header
Pass through a hose 133 between upper water box 132 to be connected to so that coolant liquid in the lower header 131 can by the hose 133 into
Enter the upper water box 132.The hose 133 is metal hose, to provide the good heat radiating at hose 133, the lower header 131
Water inlet is opened up, to connect the water pipe group 14 so that the coolant liquid in the water pipe group 14 can be flowed by the water inlet
The lower header 131, the upper water box 132 open up water outlet, to connect the water pipe group 14 so that in the upper water box 132
Coolant liquid can flow out the upper water box 132 by the water outlet.The thermal-insulating chamber 12 offers and the water inlet and goes out
The compatible through-hole in the mouth of a river, so that the water tank group 13 in thermal-insulating chamber 12 and water pump 151, heat outside thermal-insulating chamber
Table 152, radiator 153 are connected to by the water pipe group 14.Two temperature sensors 161 being positioned in water tank group 13 are put respectively
It is placed in lower header 131 and upper water box 132.
Shown in Fig. 3, the thermal-insulating chamber 12 includes thermal-insulating chamber ontology 121 and thermal-insulating chamber lid 122.Wherein, institute
The accommodation space that 121 inside of thermal-insulating chamber ontology forms a upper opening is stated, the water tank group 13 is set together with the tested battery 2
In in the accommodation space.The thermal-insulating chamber lid 122 is set to the top of the thermal-insulating chamber ontology 121, and in an opening and closing electricity
The opening of the accommodation space is opened, closed under the control of machine 125, wherein the opening and closing motor 125 is electrically connected to the calculating
Machine 19, to execute opening, the shutoff operation of the thermal-insulating chamber lid 122 under the control of the computer 19.To ensure to measure
Precision, the opening and closing motor 125 is preferably located in insulating box 11.In addition, 121 internal side wall of thermal-insulating chamber ontology is equipped with water
Case guide rail, the water tank group 13 are equipped with guide-track groove compatible with the water tank guide rail, and then can be along predetermined convenient for water tank group 13
It moves in direction.
In addition, in the heat amount test for carrying out tested battery 2, thermal-insulating chamber 12 is preferably maintained in vacuum state, to prevent thermal-insulating chamber
The influence of existing air in 12.Therefore, further include vaccum-pumping equipment (not shown), and such as in the embodiment of the present invention
Shown in Fig. 1, thermal-insulating chamber 12, which offers, vacuumizes interface 18, to be connected with the vaccum-pumping equipment.After being packed into tested battery 2,
And it before carrying out the heat amount test of tested battery 2, will be vacuumized in thermal-insulating chamber 12 using vaccum-pumping equipment.
As shown in Figure 1, in the embodiment of the present invention, the water pipe group 14 includes outlet pipe 141, the first diversion pipe 142, second
Diversion pipe 143, third diversion pipe 144 and water inlet pipe 145.Wherein, the outlet pipe 141 is connected to going out for the upper water box 132
Between the mouth of a river and the water inlet of the water pump 151.First diversion pipe 142 is connected to the water outlet and heat of the water pump 151
Between the water inlet of scale 152.Second diversion pipe 143 is connected to the heat dissipation water delivery nozzle and radiator of the calorimeter 153
Between 153 water inlet.The third diversion pipe 144 is connected to the heat dissipation of the water outlet and the calorimeter 152 of radiator 153
Between water return outlet.The water inlet pipe 145 be connected to the calorimeter 152 water outlet and the lower header 131 water inlet it
Between.
Coolant heat in circulation line scatters and disappears in order to prevent, in the periphery of water pipe group 14 and each interface portion subpackage
Cover heat-insulating material so that heat entrained by coolant is only capable of being dispersed into insulating box 11 by radiator 153.
In the embodiment of the present invention, use PT1000 sensors as temperature sensor to measure outlet pipe in calorimeter 152
The temperature of the coolant of calorimeter 152 (flowing out upper water box 132) is flowed into 141, and is measured in water inlet pipe 145 and flowed out heat
The temperature of the coolant of table 152 (flowing into lower header 131), using turbine flowmeter as flow sensor, to measure cooling
Flow of the agent in circulation line.Heat Calculation is carried out using integrating instrument in calorimeter 152, and/or is carried out using computer 19
Heat Calculation, calculating are the temperature and data on flows using temperature sensor and flow sensor acquisition in calorimeter 152.
Computational methods use k-factor penalty method, have debugging functions, thus have higher precision, meet the worlds OIML-R75 rule
Journey and EN1434 European standards are the state-of-the-art computational methods of current computational accuracy.Utilize the calculation formula of k-factor penalty method
For：
Wherein, Q is the release heat for the tested battery 2 to be obtained, and unit is KJ (kilojoule) or kWh (kilowatt hour)；K is
Heat exchange coefficient, unit kWh/m3·℃；Δ θ is the inlet and outlet temperature difference of calorimeter 152, and unit is DEG C (degree Celsius)；V is
Volume flow, unit m3(cubic meter), v1For the volume flow in entire measurement process.
When calculating, heat exchange coefficient is：
K=(hf-hr)/(θf-θr)/v
Wherein, hf、hrThe enthalpy of heat transport fluid respectively under the entrance and exit of calorimeter 152；θf、θrIt is respectively hot
The inlet temperature and outlet temperature of scale 152；V is specific volume flow, and value and inlet and outlet enthalpy are referred to OIML-
Detailed description in the worlds R75 regulation and EN1434 European standards acquires.
Above-mentioned formula is also the principle formula of the embodiment of the present invention.
The embodiment of the present invention provides a kind of method of cell heat test simultaneously, and this method uses the electricity of above-described embodiment
Pond heat test device, as shown in figure 4, it is mainly included the following steps that：
Tested battery is placed between the water tank group in thermal-insulating chamber, and the lug of tested battery is electrically connected to electricity by step 1
Pole connectivity port；
External charging/discharging apparatus is connected to the electrode connecting end mouth by step 2；
Step 3, all components in the insulating box carry out initial temperature balance；
Step 4 passes through the temperature information of each temperature sensor of computer real-time monitoring；
Step 5, after the temperature information of each temperature sensor entirely reaches initial temperature and stablizes, it is real to pass through computer
When monitor and store temperature information and flow information acquired in the calorimeter；
Step 6 opens the water pump to drive the cycle of the coolant in the circulation line；
Step 7 opens external charging/discharging apparatus to carry out charge and discharge to the tested battery；
Step 8 terminates when charge and discharge, and the temperature information of each temperature sensor empties back into initial temperature and maintains one section
When the heat accumulative value of time and/or calorimeter is invariable, stop test；
Step 9, the heat for being discharged the heat accumulative value of calorimeter in charge and discharge process as tested battery.
There are more subsidiary component part, these component parts master in the cell heat test device of above-described embodiment
It is used to help before carrying out the measurements to be consistent with the temperature in insulating box in thermal-insulating chamber, in conjunction with the heat of entire tested battery
Measurement process more includes following careful step in embodiment of the method for the invention.
Step a, tested battery is placed between the lower header and upper water box in thermal-insulating chamber, and lug intermediate plate is held on pole
Ear；
Step b, by the leader cable of charging/discharging apparatus to electrode connecting end mouth；
Step c, all components in insulating box are both exposed to insulating box and carry out initial temperature balance in it, expose
Journey includes controlling the thermal-insulating chamber lid that opening and closing motor opens thermal-insulating chamber by computer, and the initial temperature of insulating box is set as room temperature
Any temperature between (20 DEG C) or other temperature, such as -20 DEG C~30 DEG C, preferably room temperature, pass through computer monitoring temperature
The temperature information for spending sensor ensures the temperature information of all temperature sensors all equal to initial temperature and maintains heat flat
Weighing apparatus；
Step d, after the temperature information of all temperature sensors entirely reaches initial temperature and stablizes, pass through computer
Control opening and closing motor closes thermal-insulating chamber lid, and adjustment upper water box bottom surface is to the pressure of tested battery, and pressure value is by pressure sensing
Device acquires；
Step e, open water pump with making coolant circulation successively pass through upper water box, water pump, calorimeter, radiator, calorimeter,
During which lower header, upper water box utilize real-time monitoring of computer and acquire the temperature and calorie value of each point；
It opens charging/discharging apparatus and charge and discharge is carried out to battery；
Step f, when charge and discharge terminate and the temperature of each temperature sensor return to initial temperature and maintain a period of time and/or
When the accumulative calorie value of calorimeter is invariable, stops test, read the heat accumulative value of calorimeter or obtained by computer
The calorie value that must add up is the heat discharged in this tested battery charge and discharge process measured.
The cell heat test device and cell heat test method of the present invention can efficiently and accurately measure tested battery
The heat sent out when charge and discharge is carried out, and then to know the heat condition of battery or battery pack, carrying out effective underground heat
Management, and then the thermal safety of lithium ion battery for electric vehicle is effectively improved, first-hand authentic communication is provided, to electronic vapour
The heat management and thermal safety of vehicle have great importance.
It should be appreciated that although this specification is described according to each embodiment, not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solution in each embodiment may also be suitably combined to form people in the art
The other embodiment that member is appreciated that.
The series of detailed descriptions listed above only for the present invention feasible embodiment specifically
It is bright, and not to limit the scope of the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of cell heat test device (1), which is characterized in that including：
Insulating box (11)；
Thermal-insulating chamber (12), the thermal-insulating chamber (12) are located in the insulating box (11)；
Water tank group (13), the interior filling liquid coolant of water tank group (13), and be clamped and be tested battery (2), the water tank group
(13) it is placed in the thermal-insulating chamber (12) together with the tested battery (2)；
Water pipe group (14), the water pipe group (14) are located in insulating box (11), and the water pipe group (14) is by water tank group (13), water pump
(151), calorimeter (152), radiator (153) connection are formed by the water tank group (13) by the water pump (151) described in
Calorimeter (152) by the calorimeter (152) to the radiator (153) and by the radiator (153) returns to the heat again
Scale (152), again by the calorimeter (152) to the circulation line of the water tank group (13) so that the coolant is described
It is recycled in circulation line；
Water pump (151), the water pump (151) are located in insulating box (11), and other than the thermal-insulating chamber (12), for driving
The cycle of liquid coolant in the circulation line；
Calorimeter (152), the calorimeter (152) are located in insulating box (11), and other than the thermal-insulating chamber (12), are used for
Acquisition flows through the heat accumulative value of the coolant liquid of the calorimeter (152)；
Radiator (153), the radiator (153) are located in insulating box (11), and other than the thermal-insulating chamber (12), are used for
Heat entrained in the coolant for flowing through the radiator (153) is distributed into insulating box (11)；
At least one temperature sensor (161) is arranged in tested battery (2) surface, for obtaining the tested battery (2)
The temperature information on surface；
Electrode connecting end mouth (17), the electrode connecting end mouth (17) are located at the thermal-insulating chamber (12) outside and are electrically connected to the quilt
The lug (21) of battery (2) is surveyed, the electrode connecting end mouth (17) is for connecting external charging/discharging apparatus；
Computer (19), the computer (19) are located at the insulating box (11) outside, and are connected to the calorimeter (152) and extremely
A few temperature sensor (161), the computer (19) are acquired for receiving at least one temperature sensor (161)
Temperature information, receive heat accumulative value acquired in the calorimeter (152)；Wherein,
The water tank group (13) includes lower header (131) and upper water box (132)；Wherein,
The lower header (131) is located at the downside of the tested battery (2), and the upper water box (132) is located at the tested battery
(2) upside, the tested battery (2) is between the lower header (131) and upper water box (132)；
It is connected to by a hose between the lower header (131) and upper water box (132) so that cold in the lower header (131)
But liquid can enter the upper water box (132) by the hose；
The lower header (131) opens up water inlet, to connect the water pipe group (14) so that the cooling in the water pipe group (14)
Liquid can flow into the lower header (131) by the water inlet；
The upper water box (132) opens up water outlet, to connect the water pipe group (14) so that cold in the upper water box (132)
But liquid can flow out the upper water box (132) by the water outlet.
2. cell heat test device (1) according to claim 1, which is characterized in that the cell heat test device
(1) further include：
Pressure sensor (162), the pressure sensor (162) are located in the thermal-insulating chamber (12) and are connected to the computer
(19), the pressure sensor (162) is for obtaining the pressure information that the water tank group (13) is applied to the tested battery (2)
And it sends it to the computer (19) and is monitored.
3. cell heat test device (1) according to claim 1, which is characterized in that the cell heat test device
(1) further include：
Electrode heat conduction connector (171), the electrode heat conduction connector (171) are located in the thermal-insulating chamber (12), the electrode
One end of heat conduction connector (171) is connected to the lug (21) of the tested battery (2), the electrode heat conduction connector (171)
The other end as the electrode connecting end mouth (17), electrode heat conduction connector (171) surface covers heat conductive insulating silica gel,
The water tank group (13) is pressed in the heat conductive insulating silica gel.
4. cell heat test device (1) according to claim 1, it is characterised in that：
The thermal-insulating chamber (12) offers through-hole compatible with the inlet and outlet, so that being located at thermal-insulating chamber (12)
Interior water tank group (13) and pass through positioned at thermal-insulating chamber (12) water pump (151), calorimeter (152), radiator (153) outside described
Water pipe group (14) is connected to.
5. cell heat test device (1) according to claim 1, which is characterized in that the water pipe group (14) includes：
Outlet pipe (141), the outlet pipe (141) are connected to the water outlet and the water pump (151) of the upper water box (132)
Between water inlet；
First diversion pipe (142), first diversion pipe (142) are connected to the water outlet and calorimeter of the water pump (151)
(152) between water inlet；
Second diversion pipe (143), second diversion pipe (143) are connected to the heat dissipation water delivery nozzle of the calorimeter (152) and dissipate
Between the water inlet of hot device (153)；
Third diversion pipe (144), the third diversion pipe (144) are connected to the water outlet of radiator (153) and the calorimeter
(152) between heat dissipation water return outlet；
Water inlet pipe (145), the water inlet pipe (145) are connected to the water outlet and the lower header (131) of the calorimeter (152)
Water inlet between.
6. cell heat test device (1) according to claim 1, it is characterised in that：
At least one temperature sensor (161) is respectively arranged in the pole on tested battery (2) surface, tested battery (2)
In ear (21), upper water box (132) and in lower header (131), and it is connected to the computer (19), to obtain the tested battery
(2) lug (21) temperature information, the interior temperature information of upper water box (132) and the lower header of surface temperature information, tested battery (2)
(131) interior temperature information, and acquired temperature information is sent to the computer (19).
7. cell heat test device (1) according to claim 1, it is characterised in that：
The thermal-insulating chamber (12) includes thermal-insulating chamber ontology (121) and thermal-insulating chamber lid (122)；Wherein,
The accommodation space of a upper opening is formed inside the thermal-insulating chamber ontology (121), the water tank group (13) is together with described
Tested battery (2) is placed in the accommodation space；
The thermal-insulating chamber lid (122) is set to the top of the thermal-insulating chamber ontology (121), and in an opening and closing motor (125)
The opening of the accommodation space is opened, closed under control, wherein the opening and closing motor (125) is electrically connected to the computer
(19), to execute opening, the shutoff operation of the thermal-insulating chamber lid (122) under the control of the computer (19).
8. cell heat test device (1) according to claim 1, it is characterised in that：
The thermal-insulating chamber (12), which offers, vacuumizes interface (18).
9. a kind of using such as claim 1 to 8 any one of them cell heat test device (1) progress cell heat test
Method, including：
Tested battery (2) is placed between the water tank group (13) in thermal-insulating chamber (12), and the lug of tested battery (2) (21) is electric
It is connected to electrode connecting end mouth (17)；
External charging/discharging apparatus is connected to the electrode connecting end mouth (17)；
All components in the insulating box (11) carry out initial temperature balance；
Monitor the temperature information of each temperature sensor (161) in real time by computer (19)；
It is real by computer (19) after the temperature information of each temperature sensor (161) entirely reaches initial temperature and stablizes
When monitor and store the temperature information and flow information acquired in the calorimeter (152)；
The water pump (151) is opened to drive the cycle of the coolant in the circulation line；
External charging/discharging apparatus is opened to carry out charge and discharge to the tested battery (2)；
When charge and discharge terminate, and the temperature information of each temperature sensor (161) empties back into initial temperature and maintains a period of time
And/or calorimeter (152) heat accumulative value it is invariable when, stop test；
The heat that the heat accumulative value of calorimeter (152) is discharged as tested battery (2) in charge and discharge process.
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| CN109975711A (en) * | 2017-12-28 | 2019-07-05 | 宝沃汽车（中国）有限公司 | Battery failure detection method and device |
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| CN109738801A (en) * | 2018-11-30 | 2019-05-10 | 铜陵市优车科技有限公司 | Battery system heating power test method and system |
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Denomination of invention: Battery heat test device and battery heat test method Effective date of registration: 20190513 Granted publication date: 20181030 Pledgee: Suzhou Trust Co., Ltd. Pledgor: BEIJING CHANGCHENG HUAGUAN AUTOMOBILE TECHNOLOGY CO., LTD. Registration number: 2019990000418 |