CN217718034U - Lithium ion battery in-situ charging and discharging and low-temperature storage aging testing device - Google Patents

Abstract

The utility model relates to a lithium ion battery normal position charge-discharge and low temperature storage aging testing device, include battery test cabin, refrigerating system, heating system, place platform and charge-discharge tester, the configuration of battery test cabin refrigerating system, place the platform and arrange in the battery test cabin, place the bench and be equipped with the zone of heating, the examination lithium ion battery that awaits measuring place in the zone of heating, heating system does the zone of heating provides the heat source, charge-discharge tester with the examination lithium ion battery electricity that awaits measuring is connected. The device simulates the specific working condition that the lithium ion battery of the electric automobile frequently works in the daytime and is in a low-temperature environment at night, the aging characteristic of the battery under the working condition is researched, and the influence on the battery is researched. Meanwhile, the lithium ion battery of the device keeps in-situ all the time in the processes of charging and discharging and low-temperature aging test, and frequent movement is avoided.

Description

Lithium ion battery in-situ charging and discharging and low-temperature storage aging testing device

Technical Field

The utility model belongs to the technical field of power battery, concretely relates to lithium ion battery normal position charge-discharge and low temperature storage aging testing device.

Background

In recent years, green and environmentally friendly energy has become the new energy development direction of various countries instead of the fossil energy which is being depleted, and among them, a green and environmentally friendly lithium ion battery is most favored. At present, lithium ion batteries are widely applied to the fields of notebook computers, mobile phones, digital cameras, small electronic devices, aerospace and the like. With the large application of lithium ion batteries, the storage of the batteries is particularly critical, the self-discharge rate of the lithium ion batteries is very low during low-temperature storage, the electric quantity storage effect is better, and most of the capacity can be recovered in subsequent use.

Patent application No.: 201720934389.6, the utility model discloses a homothermal lithium ion battery storage box, comprising a main body, the inside of main part is provided with the rack, lithium ion battery has been placed on the rack, the outside of rack is provided with external frame, external frame is provided with the foam-rubber cushion by the inboard to the rack, part in the middle of the external frame is provided with thermal-insulated waterproof layer, be provided with temperature-sensing ware on external frame's the inner wall, one side of main part is provided with the cooling gas pipeline, the inside of cooling gas pipeline is provided with flip structure, flip structure's inside is provided with servo motor, servo motor's bottom is provided with the transmission shaft, the bottom of transmission shaft is provided with the heat insulating board. The utility model discloses a temperature sensor combines together with flip structure, can regulate and control the inside temperature of lithium ion battery bin at any time, and simultaneously, dry internal environment can be established to thermal-insulated waterproof layer and foam-rubber cushion, reduces lithium ion battery self-discharge's process, makes the battery can the parking time more permanent, improves lithium ion battery's capacity and life.

Patent application No.: 202021736058.X, the utility model belongs to the technical field of lithium ion battery storage box, especially, be a lithium ion battery storage box with protection device, including shell and main part, the inside of shell is provided with first spring, and the top of first spring is provided with the bottom plate, the main part sets up in the top of bottom plate, and the inside of main part is provided with first spout, the inside of first spout is provided with places the case, and the avris of placing the case is provided with the push-and-pull handle, the inside of main part is provided with the recess, and the inside of recess is provided with carries the handle to carry the tip of carrying the handle and be provided with the loose axle, the inside of shell is provided with the second spout, and the inside of second spout is provided with the apron, the avris of apron is provided with the fixture block. This lithium ion battery storage box with protection device is provided with first spring, is convenient for when the device removes, protects inside article, is favorable to shock attenuation and buffering, has avoided effectively because the shock leads to the internals impaired.

In the field of electric vehicles, lithium ion batteries are used in large quantities, and the number of electric vehicles is also increasing year by year, even in northern areas. Some electric automobile's in above-mentioned area battery is frequently worked in the daytime, self heat production, battery management system is working this moment, nevertheless when night, the vehicle stops to use, battery management system also stops work, the temperature is lower at night this moment, the battery can be stood for a long time in low temperature night environment, when electric automobile starts in the second day, the battery is in the low temperature environment for a long time and does not resume just beginning work completely, this can cause the influence of different degree to the battery performance, the decline of battery performance is aggravated so for a long time, but lack the experimental study to battery use under this kind of operating mode at present, should manage the problem that needs to solve at present urgently under this use operating mode, therefore the utility model discloses lithium ion battery normal position charge-discharge and low temperature storage aging testing device have been designed to above problem.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a lithium ion battery normal position charge-discharge and low temperature storage aging testing device, the state of simulation battery under above-mentioned operating mode can let lithium ion battery carry out charge-discharge and low temperature storage in the normal position. The aim is to charge and discharge the lithium ion battery and simulate the daytime running condition of the battery of the electric automobile; and then the battery is stored at low temperature, and the night state of the battery of the electric automobile is simulated. Through experimental research on the aging rule and mechanism of the lithium ion battery under the working conditions, a battery management method suitable for the environmental condition is provided, or experimental data support is provided for battery improvement.

The utility model discloses a following technical scheme realizes:

the lithium ion battery in-situ charging and discharging and low-temperature storage aging testing device comprises a battery testing cabin, a refrigerating system, a heating system, a placing table and a charging and discharging tester, wherein the battery testing cabin is configured with the refrigerating system, the placing table is arranged in the battery testing cabin, the placing table is provided with a heating zone, a lithium ion battery to be tested is placed in the heating zone, the heating system provides a heat source for the heating zone, and the charging and discharging tester is electrically connected with the lithium ion battery to be tested.

The device simulates the specific working condition that the lithium ion battery of the electric automobile frequently works in the daytime and is in a low-temperature environment at night, the aging characteristic of the battery under the working condition is researched, and the influence on the battery is researched. Meanwhile, the lithium ion battery of the device keeps in situ all the time in the processes of charging, discharging and low-temperature aging testing, and frequent movement is avoided.

As a preferred scheme of the testing device, the refrigerating system comprises an evaporator, a compressor, a throttling valve and a condenser, the condenser is arranged in the battery testing cabin, the compressor is arranged inside and outside the battery testing cabin, and the evaporator, the compressor, the condenser and the throttling valve are sequentially connected through pipelines to form a circulating loop. Further, water is used as a refrigerant in a circulation loop of the refrigeration system.

As the preferable scheme of the testing device, the heating system comprises a heating resistance wire, and the heating resistance wire is arranged in a heating area on the placing table.

As a preferable scheme of the testing device, the testing device further comprises a temperature meter, and a thermocouple of the temperature meter is installed on the surface of the lithium ion battery to be tested.

As the preferable scheme of the testing device, the testing device further comprises a temperature and humidity display screen, a temperature sensor and a humidity sensor, wherein the temperature sensor and the humidity sensor are arranged in the battery testing cabin and are electrically connected with the temperature and humidity display screen. Further, the temperature and humidity display screen is arranged in the front of the battery test chamber shell.

As a preferable scheme of the testing device, handles are arranged on two opposite sides of the outer shell of the battery testing cabin.

As a preferable scheme of the testing device, the lithium ion battery is a soft package battery.

As a preferable scheme of the testing device, the testing device further comprises a pair of clamps, the pair of clamps are respectively clamped on the positive electrode and the negative electrode of the lithium ion battery, and the charge and discharge tester is electrically connected with the clamps.

To sum up, compared with the prior art, the utility model, have following advantage and beneficial effect:

1. the device simulates the frequent work of the lithium ion battery of the electric automobile in the daytime, the battery management system stops working at night, and the battery is in a specific working condition in a low-temperature environment for a long time, so that the experimental research is conveniently developed.

2. The lithium ion battery in the device can be charged and discharged and subjected to low-temperature aging test, the in-situ maintenance is only required in the process, the inaccurate experimental result caused by frequent movement is avoided,

3. the device makes feasible contribution on equipment for verifying the aging characteristic of the battery under the working condition in the future and developing the battery adaptive to the special environment in the future.

4. The device uses water as a refrigerant, is simple, convenient and low in price and material benefit. And the refrigeration speed can be adjusted by the compressor, and the refrigeration can be carried out slowly or rapidly.

5. The subzero box on the market is bulky at present, is difficult for removing, the utility model discloses a more nimble, and more than can low temperature storage lithium ion battery, be multi-functional integrative case.

6. Lithium ion battery uses immediately after low temperature storage can receive the influence of certain degree, and is more reasonable after handling, and this device is placed the bench and is provided with a micro-heating district, need not wait to lithium ion battery and resume naturally, and lithium ion battery directly just can resume normal atmospheric temperature state in the normal position.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic front view of the overall structure of the apparatus;

fig. 2 is a schematic top view of the device with the internal platform and the battery.

Reference numbers and corresponding part names: 1. an evaporator; 2. a compressor; 3. a throttle valve; 4. a condenser; 5. a temperature and humidity display screen; 6. a temperature sensor; 7. a humidity sensor; 8. a handle; 9. a clamp; 10. a lithium ion battery; 11. a charge and discharge tester; 12. a placing table; 13. a temperature meter; 14. a thermocouple; 15. a heating zone; 16. heating the resistance wire.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, taken in conjunction with the accompanying examples and drawings, will explain the principles and features of the present invention in further detail, and the illustrative embodiments and the description thereof will only explain the present invention without limiting the scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the description, references to "one embodiment," "an embodiment," "one example," or "an example" mean: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The following discloses a variety of different implementation or examples implementing the subject technology. The following describes particular embodiments of one or more arrangements of features for simplicity of disclosure, but the illustrated embodiments are not intended to be limiting of the present disclosure, and the first and second features set forth in the following description may be combined to include embodiments that are directly connected, or may form additional features, and further, may include the use of one or more additional intervening features to indirectly connect or combine the first and second features to each other such that the first and second features may not be directly connected.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "high", "low", "inner", "outer", "center", "length", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

In the description of the present specification, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

The terms used in the present specification are those general terms currently widely used in the art in consideration of functions related to the present disclosure, but they may be changed according to the intention of a person having ordinary skill in the art, precedent, or new technology in the art. Also, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present disclosure. Therefore, the terms used in the specification should not be construed as simple names but based on the meanings of the terms and the overall description of the present disclosure.

Flowcharts or text are used in this specification to illustrate the operational steps performed in accordance with embodiments of the present application. It should be understood that the operational steps in the embodiments of the present application are not necessarily performed in the exact order recited. Rather, the various steps may be processed in reverse order or simultaneously, as desired. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.

Based on this, the utility model provides a lithium ion battery normal position charge-discharge and low temperature storage aging testing device, the state of simulation battery under above-mentioned operating mode can let lithium ion battery carry out charge-discharge and low temperature storage in the normal position. The utility model discloses a following embodiment realizes:

examples

Lithium ion battery in situ charge and discharge and low temperature storage aging testing device, as shown in fig. 1-2, including battery test chamber, refrigerating system, heating system, place platform 12 and charge and discharge tester 11, battery test chamber configuration refrigerating system, through refrigerating system regulates and control the temperature at any time, place platform 12 and arrange in the battery test chamber, be equipped with the zone of heating 15 on placing platform 12, the lithium ion battery 10 that awaits measuring is placed in the zone of heating 15, heating system does the zone of heating 15 provides the heat source, charge and discharge tester 11 with the lithium ion battery 10 electricity that awaits measuring is connected. In the embodiment, the lithium ion battery 10 is charged and discharged, and the daytime running condition of the lithium ion battery 10 of the electric automobile is simulated; and then storing the lithium ion battery 10 at a low temperature to simulate the night state of the lithium ion battery 10 of the electric automobile. Through experimental study on the aging rule and mechanism of the lithium ion battery 10 under the above working conditions, a battery management method suitable for the environmental conditions is provided, or experimental data support is provided for improvement of the lithium ion battery 10.

As an optional implementation manner of the testing device, as shown in fig. 1, the refrigeration system includes an evaporator 1, a compressor 2, a throttle valve 3, and a condenser 4, the condenser 4 is disposed in the battery testing chamber, the compressor 2 is disposed inside and outside the battery testing chamber, and the evaporator 1, the compressor 2, the condenser 4, and the throttle valve 3 are sequentially connected through a pipeline to form a circulation loop. The circulation loop of the refrigeration system uses water as a refrigerant. Simple refrigeration systems use water as the refrigerant.

As an alternative embodiment of the testing device, as shown in fig. 2, the heating system comprises a resistance heater 16, which resistance heater 16 is arranged in a heating zone 15 on the placement table 12.

As an alternative embodiment of the testing device, as shown in fig. 2, the testing device further includes a temperature meter 13, and a thermocouple 14 of the temperature meter 13 is installed on the surface of the lithium ion battery 10 to be tested.

As an alternative embodiment of the testing device, as shown in fig. 1, the testing device further includes a temperature and humidity display screen 5, a temperature sensor 6 and a humidity sensor 7, where the temperature sensor 6 and the humidity sensor 7 are disposed in the battery testing compartment and electrically connected to the temperature and humidity display screen 5. The temperature and humidity display screen 5 is arranged in the front of the shell of the battery test chamber, and the temperature and the humidity inside the device are monitored in real time through the temperature and humidity display screen 5.

As an alternative embodiment of the testing apparatus, as shown in fig. 1, the lithium ion battery 10 is a pouch battery. The testing device further comprises a pair of clamps 9, the clamps 9 are clamped on the positive electrode and the negative electrode of the lithium ion battery 10 respectively, and the charge and discharge tester 11 is electrically connected with the clamps 9. In addition, handles 8 are arranged on two opposite sides of the battery test chamber shell.

During operation, the temperature and the humidity inside the battery test chamber are monitored in real time through the temperature and humidity display screen 5 connected with the temperature sensor 6 and the humidity sensor 7, and the temperature is regulated and controlled to the experiment temperature through the refrigerating system and the heating area 15. The lithium ion battery 10 is placed on the placing table 12, the clamp 9 is used for clamping the corresponding positive and negative electrodes of the lithium ion battery 10, the charge and discharge tester 11 is started to enable the lithium ion battery 10 to carry out charge and discharge circulation, when circulation is completed, the refrigeration system is started to manufacture a low-temperature storage environment in the battery testing cabin, the refrigeration speed can be adjusted, the lithium ion battery 10 is stored for a period of time at a specific temperature, then the clamp 9 is used for carrying out aging testing on the lithium ion battery 10, and the lithium ion battery 10 is kept in place all the time. A heating area 15 is arranged on the placing table 12 in the device, a heating resistance wire 16 is arranged in the device, the lithium ion battery which is stored at a low temperature is heated slightly, so that the lithium ion battery is quickly restored to a normal temperature state, a thermocouple 14 is arranged on the lithium ion battery 10 and is connected with a temperature instrument 13 outside the battery test cabin, the temperature of the lithium ion battery 10 is observed in real time, and the lithium ion battery 10 is guaranteed to be restored to the normal temperature state.

In this embodiment, the sub-battery 10 is a pouch battery, but is not limited to a pouch battery, and may be selected according to actual situations. In this embodiment, the clamp 9 can be flexibly selected according to the type of the battery.

Based on the above embodiment, the present embodiment has the following features and advantages:

1. the testing device of the embodiment simulates the specific working condition that the lithium ion battery 10 of the electric automobile frequently works in the daytime and is in a low-temperature environment at night, so that the aging characteristic of the battery under the working condition is conveniently researched, and the influence on the battery is researched.

2. The lithium ion battery 10 of the testing device of the embodiment always keeps in place during the charging and discharging and low-temperature aging testing processes, and frequent movement is avoided.

3. The lithium ion battery 10 is better recovered to a normal state after being stored at a low temperature and reused, generally time is consumed, the recovery time is shortened, and the efficiency is improved.

4. The testing device of the embodiment has the functions of testing low-temperature storage, charging and discharging, low-temperature storage aging of the lithium ion battery 10, micro-heating the lithium ion battery 10 and the like, and is a multifunctional integrated device.

The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above description is only preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims (10)

1. Lithium ion battery normal position charge-discharge and low temperature storage aging testing device, its characterized in that: the lithium ion battery testing device comprises a battery testing cabin, a refrigerating system, a heating system, a placing table (12) and a charging and discharging tester (11), wherein the battery testing cabin is configured with the refrigerating system, the placing table (12) is arranged in the battery testing cabin, a heating area (15) is arranged on the placing table (12), a lithium ion battery (10) to be tested is placed in the heating area (15), the heating system is used for providing a heat source for the heating area (15), and the charging and discharging tester (11) is electrically connected with the lithium ion battery (10) to be tested.

2. The device for testing in-situ charging and discharging and low-temperature storage aging of the lithium ion battery according to claim 1, characterized in that: refrigerating system includes evaporimeter (1), compressor (2), choke valve (3) and condenser (4), condenser (4) are arranged in the battery test cabin, compressor (2) are arranged in inside and outside the battery test cabin, evaporimeter (1), compressor (2), condenser (4) and choke valve (3) connect gradually through the pipeline and constitute circulation circuit.

3. The device for testing in-situ charging and discharging and low-temperature storage aging of the lithium ion battery according to claim 2, wherein: the water is used as a refrigerant in a circulation loop of the refrigeration system.

4. The device for testing in-situ charging and discharging and low-temperature storage aging of the lithium ion battery according to claim 1, characterized in that: the heating system comprises a heating resistance wire (16), and the heating resistance wire (16) is arranged in a heating area (15) on the placing table (12).

5. The device for testing in-situ charging and discharging and low-temperature storage aging of the lithium ion battery according to claim 1, characterized in that: the testing device further comprises a temperature meter (13), and a thermocouple (14) of the temperature meter (13) is installed on the surface of the lithium ion battery (10) to be tested.

6. The device for testing in-situ charging and discharging and low-temperature storage aging of the lithium ion battery according to claim 1, characterized in that: the testing device further comprises a temperature and humidity display screen (5), a temperature sensor (6) and a humidity sensor (7), wherein the temperature sensor (6) and the humidity sensor (7) are arranged in the battery testing cabin and are electrically connected with the temperature and humidity display screen (5).

7. The lithium ion battery in-situ charging and discharging and low-temperature storage aging test device of claim 6, characterized in that: the temperature and humidity display screen (5) is arranged at the front part of the shell of the battery test chamber.

8. The lithium ion battery in-situ charging and discharging and low-temperature storage aging test device of claim 1, characterized in that: handles (8) are arranged on two opposite sides of the battery test chamber shell.

9. The device for testing in-situ charging and discharging and low-temperature storage aging of the lithium ion battery according to claim 1, characterized in that: the lithium ion battery (10) is a soft package battery.

10. The in-situ charging and discharging and low-temperature storage aging testing device for the lithium ion battery according to claim 9, characterized in that: the testing device further comprises a pair of clamps (9), the clamps (9) are clamped on the positive electrode and the negative electrode of the lithium ion battery (10) respectively, and the charge and discharge tester (11) is electrically connected with the clamps (9).

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