CN210167479U

CN210167479U - Lithium battery cell with ultra-low temperature environment uses function

Info

Publication number: CN210167479U
Application number: CN201921171256.3U
Authority: CN
Inventors: 胡磊; 张婷; 吴万进
Original assignee: Runyuan Construction Development Co Ltd
Current assignee: Runyuan Construction Development Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-03-20
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a lithium battery cell with ultra-low temperature environment use function in the technical field of lithium batteries, the top of a shell is provided with a shell cover, a positive electrode post and a negative electrode post are arranged on the shell cover, an inner cavity of the shell is provided with a heat preservation shell, an inner cavity of the heat preservation shell is provided with a cell body, the opposite walls of the inner cavity of the shell are provided with electric heating elements, the outer wall of the heat preservation shell is provided with a first heat conduction pipe, both ends of the first heat conduction pipe are fixed on the outer wall of the heat preservation shell through fixing hoops, in addition, the side wall of the first heat conduction pipe is provided with air nozzles at equal intervals, one end of the heat dissipation pipe is connected with the inner cavity of the heat preservation shell, the inner cavity of the heat dissipation pipe is provided with a micro electromagnetic valve, the utility model has the advantages of rapidly transferring heat, the normal work of electric core is guaranteed, and the excellent in use effect.

Description

Lithium battery cell with ultra-low temperature environment uses function

Technical Field

The utility model relates to a lithium cell technical field specifically is a lithium cell electricity core with ultra-low temperature environment uses function.

Background

A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. In the 70 s of the 20 th century, lithium ion batteries were proposed and started to be studied. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries become mainstream at present, most of batteries for electric vehicles in the market adopt lithium batteries, the effect is very good, and the service life is remarkably prolonged.

When current lithium battery cell uses under low temperature environment, can utilize heating element to heat it usually, but heating element often only sets up the one side at electric core, heating element work back, heat transfer if rapid not enough, just can lead to the local temperature difference, influence the use of electric core, when electric core reachs the extreme temperature of normal work simultaneously, can not in time release inside heat, probably lead to electric core to damage because the high temperature, for this reason, we provide a lithium battery cell who has ultra-low temperature environment and use the function.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell electricity core with ultra-low temperature environment uses function to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a lithium battery cell with ultralow temperature environment use function comprises a shell, wherein the top of the shell is provided with a shell cover, the shell cover is provided with a positive electrode column and a negative electrode column, an inner cavity of the shell is provided with a heat preservation shell, an inner cavity of the heat preservation shell is provided with a cell body, the inner cavity of the shell is provided with electric heating elements on opposite walls, the inner wall of the shell is provided with a first temperature detection element, the inner wall of the heat preservation shell is provided with a second temperature detection element, the output ends of the first temperature detection element and the second temperature detection element are electrically connected with a controller arranged at the bottom of the shell cover, the outer wall of the heat preservation shell is provided with a first heat conduction pipe, the two ends of the first heat conduction pipe are fixed on the outer wall of the heat preservation shell through fixing hoops, air nozzles are arranged on the side wall of the first heat, first heat pipe and second heat pipe through connection, second heat pipe one end is connected with the air outlet of heat conduction fan, be provided with the cooling tube between heat preservation shell and the shell, cooling tube one end is connected with heat preservation shell inner chamber, just the cooling tube other end is connected with the shell lateral wall, the cooling tube inner chamber is provided with miniature solenoid valve, the output of controller respectively with heat conduction fan and miniature solenoid valve electric connection.

Furthermore, the first heat conduction pipes are straight pipes and are arranged on the outer wall of the heat preservation shell in a staggered mode, the first heat conduction pipes are mutually communicated, a plurality of heat conduction holes are formed in the first heat conduction pipes, and a sealing ring is arranged at the joint of the air nozzle and the heat preservation shell.

Furthermore, the second heat pipe is of a Z-shaped pipe structure, a plurality of connecting pieces are arranged on the outer wall of the second heat pipe, and two ends of the second heat pipe are hermetically connected with the first heat pipe and the heat conduction fan.

Furthermore, the heat conduction fan is fixedly arranged on the outer wall of the heat preservation shell through a fixing piece, an air guide disc is arranged at an air outlet of the heat conduction fan, one end of the second heat conduction pipe is connected with an air guide opening in the air guide disc, and a protection cover is arranged on the outer side of the heat conduction fan.

Furthermore, the junction of the radiating pipe, the heat preservation shell and the shell is provided with a heat insulation gasket, and the outer wall of the radiating pipe is provided with a protective sleeve.

Furthermore, a heat conducting substance is arranged in an interlayer between the heat preservation shell and the shell.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of simple structure, and reasonable design, when electric core is in under the low temperature environment, first temperature detection component detects when the temperature is less than the setting value, through controller control electric heating element work, the work of simultaneous control heat conduction fan, the heat that produces a part is through the leading-in inner chamber that keeps warm the shell of first heat pipe and second heat pipe, another part heat transmits the outer wall that keeps warm the shell through the conduction oil, finally conduct to electric core on, can heat electric core fast, avoid producing the problem of local temperature difference, when the temperature reaches the temperature of electric core normal work, when second temperature detection component detects and surpasses the settlement temperature value, control miniature solenoid valve opens, lead out partly with the heat in the shell that keeps warm, keep the temperature in the shell that keeps warm and be in the normal value, guarantee the normal work of electric core, excellent in use effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a block diagram of the working principle of the present invention.

In the figure: 1. a housing; 2. a shell cover; 3. a positive electrode column; 4. a negative electrode column; 5. a heat preservation shell; 6. a cell body; 7. an electrical heating element; 8. a first temperature detection element; 9. a second temperature detection element; 10. a controller; 11. a first heat conductive pipe; 12. a tuyere; 13. a second heat conductive pipe; 14. a fixing hoop; 15. a heat conducting fan; 16. a radiating pipe; 17. a miniature electromagnetic valve.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a lithium battery cell with ultra-low temperature environment uses function has the advantage of transmitting the heat to the electric core outer wall fast and in time dispelling the heat, please refer to fig. 1, including shell 1, cap 2, positive electrode post 3, negative electrode post 4, heat preservation shell 5, electric core body 6, electric heating element 7, first temperature detection element 8, second temperature detection element 9, controller 10, first heat pipe 11, tuyere 12, second heat pipe 13, fixed hoop 14, heat conduction fan 15, cooling tube 16, miniature solenoid valve 17;

referring to fig. 1, a case cover 2 is disposed on the top of a case 1, and a positive electrode column 3 and a negative electrode column 4 are disposed on the case cover 2 and electrically connected to an external device;

referring to fig. 1 again, a heat preservation shell 5 is arranged in an inner cavity of the housing 1, a cell body 6 is arranged in an inner cavity of the heat preservation shell 5, electric heating elements 7 are arranged on opposite walls of the inner cavity of the housing 1, and the electric heating elements 7 are metal electric heating elements and are used for providing the temperature required by normal operation for the cell in a low-temperature environment;

referring to fig. 1 again, a first temperature detection element 8 is disposed on an inner wall of the housing 1, a second temperature detection element 9 is disposed on an inner wall of the heat preservation housing 5, output ends of the first temperature detection element 8 and the second temperature detection element 9 are electrically connected with a controller 10 disposed at a bottom of the housing cover 2, and the temperature detection elements are thermistors respectively used for detecting a temperature of the electric core body under an environment and a temperature of the electric core body after heating;

referring to fig. 1 again, the outer wall of the thermal insulation shell 5 is provided with a first heat pipe 11, two ends of the first heat pipe 11 are fixed on the outer wall of the thermal insulation shell 5 through fixing hoops 14, the fixing hoops 14 are sleeved on the outer wall of the first heat pipe 11 and are fixed through locking screws, air nozzles 12 are arranged on the side wall of the first heat pipe 11 at equal intervals, the air nozzles 12 penetrate through the thermal insulation shell 5 and extend to the inner cavity of the thermal insulation shell, the first heat pipe 11 is in through connection with a second heat pipe 13, one end of the second heat pipe 13 is connected with an air outlet of a heat conduction fan 15, and the first heat pipe 11, the second heat pipe 13 and the heat conduction fan 15 work in a matching manner to quickly conduct generated heat to the outside of the battery cell, so as to avoid the;

referring to fig. 1 again, a heat dissipation pipe 16 is disposed between the heat preservation shell 5 and the housing 1, one end of the heat dissipation pipe 16 is connected to the inner cavity of the heat preservation shell 5, the other end of the heat dissipation pipe 16 is connected to the side wall of the housing 1, the heat dissipation pipe 16 communicates the inner cavity of the heat preservation shell 5 with the outside, a micro electromagnetic valve 17 is disposed in the inner cavity of the heat dissipation pipe 16, when the electric heating element 7 continuously generates heat and reaches the upper limit value of the normal operating temperature of the battery cell, the micro electromagnetic valve 17 is opened, the heat release in the heat preservation shell 5 can be realized, and after the heat release is reduced to the lower limit value, the micro electromagnetic valve 17 is closed, so that the.

Example (b): when the electric core is in a low-temperature environment, when the first temperature detection element 8 detects that the temperature is lower than a set value, the controller 10 controls the electric heating element 7 to work, and simultaneously controls the heat conduction fan 15 to work, a part of generated heat is uniformly guided into the inner cavity of the heat insulation shell 5 through the first heat conduction pipe 11 and the second heat conduction pipe 13, the other part of heat is transmitted to the outer wall of the heat insulation shell 5 through heat conduction oil and is finally transmitted to the electric core, the electric core can be rapidly heated, the temperature rise of the electric core is realized, the problem of unstable work of elements in the electric core caused by local temperature difference is avoided, when the temperature reaches the temperature of normal work of the electric core and is continuously raised, the second temperature detection element 9 detects that the temperature exceeds a set temperature value, the micro electromagnetic valve 17 is controlled to be opened, the heat insulation shell 5 is communicated with the outside, and the heat in, when the temperature in the heat preservation shell 5 is at the normal value of the working of the battery cell, the micro electromagnetic valve 17 is closed, so that the temperature is constant, the normal working of the battery cell is ensured, and the using effect is good.

Referring to fig. 1, in order to ensure the heat transmission and the sealing performance of the joints, the first heat pipes 11 are straight pipes and are arranged on the outer wall of the heat preservation shell 5 in a staggered manner, and the first heat pipes 11 are connected in a through manner, so that the heat can be quickly conducted to the outside of the whole battery cell, the temperature of the battery cell can be uniformly raised, and the problem of local temperature difference can be avoided.

Referring to fig. 1, in order to smoothly transfer the heat transferred by the heat-conducting fan 15 to the first heat-conducting pipe 11, the second heat-conducting pipe 13 has a Z-shaped structure, and a plurality of connectors are disposed on an outer wall of the second heat-conducting pipe 13, and two ends of the second heat-conducting pipe 13 are hermetically connected to the first heat-conducting pipe 11 and the heat-conducting fan 15, so as to prevent the heat from dissipating.

Referring to fig. 1, in order to uniformly transfer heat to the plurality of second heat pipes 13 and to fixedly mount the heat-conducting fan 15, the heat-conducting fan 15 is fixedly disposed on the outer wall of the heat-insulating case 5 through a fixing member, an air-guiding plate is disposed at an air outlet of the heat-conducting fan 15, one end of the second heat pipe 13 is connected to an air-guiding opening on the air-guiding plate, and a protective cover is disposed on the outer side of the heat-conducting fan 15 and made of a heat-conducting material.

Referring to fig. 1, in order to prevent heat dissipation, heat insulating gaskets are disposed at the joints of the heat dissipation pipe 16, the heat preservation shell 5 and the outer shell 1, and a protective sleeve is disposed on the outer wall of the heat dissipation pipe 16.

Referring to fig. 1, in order to accelerate heat conduction to the battery cell, a heat conducting material is disposed in an interlayer between the heat preservation shell 5 and the housing 1, and the heat conducting material is heat conducting oil.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium battery electricity core with ultra-low temperature environment uses function, includes shell (1), its characterized in that: the heat insulation structure is characterized in that a shell cover (2) is arranged at the top of the shell (1), a positive electrode column (3) and a negative electrode column (4) are arranged on the shell cover (2), a heat insulation shell (5) is arranged in an inner cavity of the shell (1), an electric core body (6) is arranged in the inner cavity of the heat insulation shell (5), electric heating elements (7) are arranged on opposite walls of the inner cavity of the shell (1), a first temperature detection element (8) is arranged on the inner wall of the shell (1), a second temperature detection element (9) is arranged on the inner wall of the heat insulation shell (5), the output ends of the first temperature detection element (8) and the second temperature detection element (9) are electrically connected with a controller (10) arranged at the bottom of the shell cover (2), a first heat conduction pipe (11) is arranged on the outer wall of the heat insulation shell (5), and the two ends of the first heat conduction pipe (11) are fixed, just first heat pipe (11) lateral wall equidistant is provided with tuyere (12), tuyere (12) run through heat preservation shell (5) and extend to its inner chamber, first heat pipe (11) and second heat pipe (13) through connection, second heat pipe (13) one end is connected with the air outlet of heat conduction fan (15), be provided with cooling tube (16) between heat preservation shell (5) and shell (1), cooling tube (16) one end is connected with heat preservation shell (5) inner chamber, just cooling tube (16) the other end is connected with shell (1) lateral wall, cooling tube (16) inner chamber is provided with miniature solenoid valve (17), the output of controller (10) respectively with heat conduction fan (15) and miniature solenoid valve (17) electric connection.

2. The lithium battery cell with the ultra-low temperature environment use function of claim 1, wherein: first heat pipe (11) are straight tube form and crisscross setting in heat preservation shell (5) outer wall, just be through connection each other between first heat pipe (11), a plurality of heat conduction holes have been seted up on first heat pipe (11), tuyere (12) and heat preservation shell (5) junction are provided with the sealing washer.

3. The lithium battery cell with the ultra-low temperature environment use function of claim 1, wherein: the second heat conduction pipe (13) is of a Z-shaped pipe structure, a plurality of connecting pieces are arranged on the outer wall of the second heat conduction pipe (13), and two ends of the second heat conduction pipe (13) are hermetically connected with the first heat conduction pipe (11) and the heat conduction fan (15).

4. The lithium battery cell with the ultra-low temperature environment use function of claim 1, wherein: the heat conduction fan (15) is fixedly arranged on the outer wall of the heat preservation shell (5) through a fixing piece, an air guide disc is arranged at an air outlet of the heat conduction fan (15), one end of the second heat conduction pipe (13) is connected with the air guide opening in the air guide disc, and a protective cover is arranged on the outer side of the heat conduction fan (15).

5. The lithium battery cell with the ultra-low temperature environment use function of claim 1, wherein: the radiating pipe (16) and the joint of the heat preservation shell (5) and the shell (1) are provided with heat insulation gaskets, and the outer wall of the radiating pipe (16) is provided with a protective sleeve.

6. The lithium battery cell with the ultra-low temperature environment use function of claim 1, wherein: and a heat-conducting substance is arranged in an interlayer between the heat-insulating shell (5) and the shell (1).