Heat preservation structure of new energy battery
By installing a spiral coil and heating/cooling pipeline system inside the protective shell of the new energy vehicle battery, combined with a liquid nitrogen circulation control tank and a heat transfer oil heating mechanism, the battery pack can be actively heated or cooled, solving the problems of insufficient range and high temperature effects in cold regions, and ensuring long-term constant temperature operation of the battery pack.
Patent Information
- Application Number
- CN202423235097.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing new energy vehicle batteries have insufficient range in cold regions, and high temperatures affect battery life. Existing insulation structures cannot actively heat up and can only slow down heat loss.
The system employs a spiral coil and heating and cooling pipeline system within the battery protective casing, combined with a liquid nitrogen circulation control tank and a heat transfer oil heating mechanism. By switching the pipelines via an electromagnetic three-way valve, active heating or cooling is achieved to maintain a constant temperature for the battery pack.
It effectively extends battery life in cold environments, prevents batteries from being affected by low or high temperatures, improves battery life, and ensures long-term constant temperature operation of the battery pack.
Smart Images
Figure CN223728851U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery heat preservation technical field, concretely is new energy battery heat preservation structure. BACKGROUND
[0002] Battery is one of the core components of new energy vehicles, however in the actual use of electric car, battery freezes in high and cold area, and the endurance decays, and the endurance decays more than 50% at minus 40 DEG C, therefore the endurance mileage of electric car in high and cold area is seriously insufficient, and frequent charging is needed, and high temperature also can influence the life of battery, the solution on the market is to increase the heat preservation structure outside the battery, first, the heat preservation structure can play the heat preservation effect to battery, and the other is to play the anti -collision effect, but the existing heat preservation structure is passive heat preservation, and the heat preservation structure itself cannot generate heat, and cannot play the heating effect, and only slow down the loss of battery heat, the heat generated under the working state of battery cannot be lower than the low temperature of high and cold area, and battery still faces the influence of high and cold. UTILITY MODEL CONTENTS
[0003] In view of the defects of the prior art, the utility model provides new energy battery heat preservation structure, and solves the problem that the battery of the existing new energy vehicle is seriously insufficient in endurance in high and cold area.
[0004] In order to realize the above object, the utility model realizes the following technical scheme: new energy battery heat preservation structure, including battery protection shell and liquid nitrogen circulation control tank, the inside of battery protection shell is equipped with battery pack, the inside of battery protection shell is equipped with heat preservation layer, the inside of battery protection shell and the outside of battery pack are equipped with spiral coil pipe, the both ends of spiral coil pipe are connected with first pipe line and second pipe line, one end of first pipe line and second pipe line is connected with electromagnetic three-way valve respectively, the both ends of a pair of electromagnetic three-way valve are connected with first heating pipe line and second heating pipe line and first cooling pipe line and second cooling pipe line respectively;
[0005] The side of battery protection shell is equipped with heating heat exchanger and cooling heat exchanger, the output end of first heating pipe line and second heating pipe line is connected with heating heat exchanger, the output end of first cooling pipe line and second cooling pipe line is connected with cooling heat exchanger, the input end of heating heat exchanger is connected with heating mechanism, cooling mechanism is equipped between cooling heat exchanger and liquid nitrogen circulation control tank.
[0006] Preferably, the heating mechanism comprises a first heating pipe and a second heating pipe connected to the input end of the heating heat exchanger, one end of the first heating pipe and the second heating pipe is connected with a heat conducting oil tank, one end of the heat conducting oil tank is provided with a first circulating pipe and a second circulating pipe, the first circulating pipe and the second circulating pipe are connected with a heating tank, the heating tank is internally provided with an electric heating pipe, the control end of the electric heating pipe is connected with a controller, and the first circulating pipe is provided with a circulating pump.
[0007] Preferably, the cooling mechanism comprises a first cooling pipe and a second cooling pipe connected to the input end of the cooling heat exchanger, the first cooling pipe and the second cooling pipe are communicated with a liquid nitrogen circulating control tank, and the second cooling pipe is internally provided with a first conveying pump.
[0008] Preferably, the heat conducting oil tank is provided with a pair of guide pipes, the pair of guide pipes are connected with expansion pipes, the expansion pipes are slidably provided with pistons, the pistons are connected with springs between the pistons and the inner upper wall surfaces of the expansion pipes, and the upper ends of the expansion pipes are provided with exhaust ports.
[0009] Preferably, the second heating pipe is provided with a second conveying pump, and the first cooling pipe is provided with a third conveying pump.
[0010] Preferably, the battery protection shell is provided with an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe are respectively provided with air inlet one-way valves and air outlet one-way valves.
[0011] Preferably, the first heating pipe is provided with a fourth conveying pump, the first heating pipe and the second heating pipe are both provided with branch pipes, and the pair of branch pipes are both provided with valves.
[0012] Preferably, the first pipe and the second pipe are respectively provided with second three-way electromagnetic valves, and the pair of second three-way electromagnetic valves are both provided with bypass pipelines.
[0013] Beneficial effects
[0014] The novel energy battery heat preservation structure has the following beneficial effects:
[0015] When the temperature in the battery protection shell needs to be heated, the circulating pump and the electric heating pipe are started to circularly heat the heat conducting oil in the heat conducting oil tank, the fourth conveying pump is started after heating is completed, the heat conducting oil circularly flows in the input end of the heating heat exchanger, exchanges heat with the antifreezing liquid in the output end, the second conveying pump is started, the antifreezing liquid circularly flows in the spiral coil, the battery protection shell is heated, and the battery pack is kept in a constant temperature state for a long time.
[0016] When the heat inside the battery protection shell needs to be dissipated, the liquid nitrogen circulation control tank is opened, liquid nitrogen is sent into the input end of the cooling heat exchanger through the first conveying pump, then the antifreezing liquid in the first cooling pipeline and the spiral coil and the second cooling pipeline is circulated through the output end of the cooling heat exchanger, the heat inside the battery protection shell is taken away, and the battery pack is kept in a constant temperature state and is not affected by the outside temperature.
[0017] The spiral coil is shared by the above two cases, and the replacement of the pipelines can be realized through a pair of electromagnetic three-way valves. The electromagnetic three-way valve is a valve body structure in the prior art, has the function of replacing the pipelines, and its use method and structure are conventional technologies, so no detailed introduction is needed. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the utility model.
[0019] In the figure: 1, battery protection shell; 2, spiral coil; 3, battery pack; 4, air inlet pipe; 5, air outlet pipe; 6, heat preservation layer; 7, first pipeline; 8, second pipeline; 9, electromagnetic three-way valve; 10, first cooling pipeline; 11, second cooling pipeline; 12, cooling heat exchanger; 13, liquid nitrogen circulation control tank; 14, first conveying pump; 15, second cooling pipe; 16, first cooling pipe; 17, third conveying pump; 18, second conveying pump; 19, heating heat exchanger; 20, fourth conveying pump; 21, branch pipe; 22, heat conducting oil tank; 23, piston; 24, expansion pipe; 25, spring; 26, circulating pump; 27, heating tank; 28, electric heating pipe; 29, controller; 30, second heating pipe; 31, first heating pipe; 32, first heating pipeline; 33, second heating pipeline; 34, second three-way electromagnetic valve; 35, bypass pipeline. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.
[0021] Please refer to Figure 1The utility model provides a technical scheme: new energy battery heat preservation structure, including battery protection shell 1 and liquid nitrogen circulation control tank 13, the inside of battery protection shell 1 is equipped with battery group 3, be equipped with heat preservation layer 6 in battery protection shell 1, the inside of battery protection shell 1 and located the outside of battery group 3 is equipped with spiral coil pipe 2, the both ends of spiral coil pipe 2 are connected with first pipe line 7 and second pipe line 8, one end of first pipe line 7 and second pipe line 8 is connected with electromagnetic three -way valve 9 respectively, one pair of the both ends of electromagnetic three -way valve 9 is connected with first heating pipe line 32 and second heating pipe line 33 and first cooling pipe line 10 and second cooling pipe line 11 respectively,
[0022] The side of battery protection shell 1 is equipped with heating heat exchanger 19 and cooling heat exchanger 12, first heating pipe line 32 and second heating pipe line 33 are connected with the output end of heating heat exchanger 19, first cooling pipe line 10 and second cooling pipe line 11 are connected with the output end of cooling heat exchanger 12, the input end of heating heat exchanger 19 is connected with heating mechanism, cooling mechanism is equipped between cooling heat exchanger 12 and liquid nitrogen circulation control tank 13,
[0023] Liquid nitrogen circulation control tank 13 uses the existing mature equipment, its function is can provide liquid nitrogen stably, is used for the heat exchange work of cooling heat exchanger 12, and its use mode belongs to the conventional technical means in liquid nitrogen field, thus need not to introduce its structure and use method in detail,
[0024] In the design liquid nitrogen circulation control tank 13 and heat conducting oil tank 22 with its belonging to the pipeline connection place are equipped with valve, and this mode belongs to the conventional technical means, thus need not to describe the connection mode of pipeline in detail, liquid nitrogen circulation control tank 13 and heat conducting oil tank 22 have replacement function, and not permanent use,
[0025] Branch pipe 21 is equipped on first heating pipe 31 and second heating pipe 30, and the design at this place is to be able to butt joint with the heat conducting pipe of outside, can quickly realize the conversion of tank heat conducting oil and outside heat conducting oil.
[0026] Further, the heating mechanism includes first heating pipe 31 and second heating pipe 30 connected to the input end of heating heat exchanger 19, one end of the first heating pipe 31 and the second heating pipe 30 is connected with a heat conducting oil tank 22, one end of the heat conducting oil tank 22 is provided with a first circulation pipe and a second circulation pipe, the first circulation pipe and the second circulation pipe are connected with a heating tank 27, the heating tank 27 is provided with an electric heating pipe 28, the control end of the electric heating pipe 28 is connected with a controller 29, and the first circulation pipe is provided with a circulating pump 26.
[0027] Further, the cooling mechanism comprises a first cooling pipe 16 and a second cooling pipe 15 connected to the input end of the cooling heat exchanger 12, the first cooling pipe 16 and the second cooling pipe 15 are communicated with the liquid nitrogen circulating control tank 13, and the first delivery pump 14 is installed on the second cooling pipe 15.
[0028] Further, the heat conducting oil tank 22 is provided with a pair of pipes, an expansion pipe 24 is connected to the pipes, a piston 23 is slidably installed in the expansion pipe 24, a spring 25 is connected between the piston 23 and the inner wall of the expansion pipe 24, and an exhaust port is arranged at the upper end of the expansion pipe 24.
[0029] During the heating process of the heat conducting oil tank 22, the fluid in the tank is heated and expanded, enters the expansion pipe 24 through the pipes, and pushes up the piston 23 to compress the spring 25, thereby playing an expansion and expansion role. When the temperature drops, the volume of the expansion gradually decreases, at which time the spring 25 gradually extends until it returns to its original position, and in this process, the piston 23 is pushed back to its original position.
[0030] Further, the second heating pipe 33 is provided with a second delivery pump 18, and the first cooling pipe 10 is provided with a third delivery pump 17.
[0031] Further, the battery protection shell 1 is provided with an air inlet pipe 4 and an air outlet pipe 5, and the air inlet pipe 4 and the air outlet pipe 5 are respectively provided with an air inlet one-way valve and an air outlet one-way valve.
[0032] Further, the first heating pipe 31 is provided with a fourth delivery pump 20, and the first heating pipe 31 and the second heating pipe 30 are both provided with branch pipes 21, and a pair of the branch pipes 21 are both provided with valves.
[0033] Temperature sensors are arranged on the battery protection shell 1, the cooling heat exchanger 12, the heating heat exchanger 19, the heating tank 27, and the heat conducting oil tank 22. The sensor belongs to existing mature technology, and the application also belongs to conventional technical means.
[0034] The heating tank 27, the heat conducting oil tank 22, the liquid nitrogen circulating control tank 13, and the external of each operating pipe are all provided with a heat preservation outer layer. The structure used by the heat preservation outer layer is an existing technology, which plays a heat preservation and protection role, so it is not described in detail.
[0035] Further, the first pipe 7 and the second pipe 8 are respectively provided with a second three-way electromagnetic valve 34, and a pair of the second three-way electromagnetic valves 34 are both provided with bypass pipes 35.
[0036] The bypass pipe 35 is used to connect with other structures in the vehicle. Since the other structures are not the design focus of the present application, they will not be described in detail. The bypass pipe is provided on the first pipe 7 and the second pipe 8 to connect with other structures. The connection between the pipes is a conventional technical means.
[0037] The solenoid valves used in the design are mature existing devices, which are powered by the in-vehicle power supply. The circuit connection method is a conventional technical means.
[0038] It is worth noting that the electrical appliance structure and the like involved in the present application can be selected according to the user's needs, as long as it meets the use requirements of the present application. The corresponding control circuit and the like are also existing technologies, and those skilled in the art can implement them. Therefore, they will not be described in detail.
[0039] By connecting the parts in the present case in sequence, the specific connection and operation sequence should be referred to the working principle described below. The detailed connection means is a well-known technology in the art. The working principle and process are mainly described below.
[0040] Embodiment:
[0041] In high-cold heating use: start the circulating pump 26 and the electric heating pipe 28 to circulate and heat the heat conducting oil in the heat conducting oil tank 22. After the heating is completed, start the fourth delivery pump 20 to make the heat conducting oil circulate in the input end of the heating heat exchanger 19 and exchange heat with the antifreeze in the output end. At the same time, start the second delivery pump 18 to make the antifreeze that has been circulated and heated circulate in the spiral coil pipe 2, realize heating of the inside of the battery protection shell 1, and ensure that the battery pack 3 will not be in a low temperature state.
[0042] In high-temperature heat dissipation use: open the liquid nitrogen circulation control tank 13, send the liquid nitrogen into the input end of the cooling heat exchanger 12 through the first delivery pump 14, and then circulate the antifreeze in the first cooling pipe 10, the spiral coil pipe 2, and the second cooling pipe 11 through the output end of the cooling heat exchanger 12 to take away the heat in the battery protection shell 1, thereby achieving the effect of cooling.
[0043] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0044] While embodiments of the present application have been shown and described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the spirit and scope of the present application, which should be limited only by the scope of the appended claims and the equivalents thereof.
Claims
1. A new energy battery heat preservation structure, comprising a battery protection shell (1) and a liquid nitrogen circulation control tank (13), the inside of the battery protection shell (1) is provided with a battery pack (3), and the battery protection shell (1) is provided with a heat preservation layer (6) in the inside, characterized in that: The inside of the battery protection shell (1) and outside of the battery pack (3) is provided with a spiral coil pipe (2), both ends of the spiral coil pipe (2) are connected with a first pipe (7) and a second pipe (8), one end of the first pipe (7) and the second pipe (8) is respectively connected with an electromagnetic three-way valve (9), both ends of a pair of the electromagnetic three-way valves (9) are respectively connected with a first heating pipe (32) and a second heating pipe (33) and a first cooling pipe (10) and a second cooling pipe (11). One side of the battery protection shell (1) is provided with a heating heat exchanger (19) and a cooling heat exchanger (12), the first heating pipe (32) and the second heating pipe (33) are connected with the output end of the heating heat exchanger (19), the first cooling pipe (10) and the second cooling pipe (11) are connected with the output end of the cooling heat exchanger (12), the input end of the heating heat exchanger (19) is connected with a heating mechanism, and the cooling heat exchanger (12) and a liquid nitrogen circulating control tank (13) are provided with a cooling mechanism.
2. The new energy battery heat preservation structure according to claim 1, characterized in that, The heating mechanism comprises a first heating pipe (31) and a second heating pipe (30) connected to the input end of the heating heat exchanger (19), one end of the first heating pipe (31) and the second heating pipe (30) is connected with a heat conducting oil tank (22), one end of the heat conducting oil tank (22) is provided with a first circulating pipe and a second circulating pipe, the first circulating pipe and the second circulating pipe are connected with a heating tank (27), the heating tank (27) is provided with an electric heating pipe (28), the control end of the electric heating pipe (28) is connected with a controller (29), and the first circulating pipe is provided with a circulating pump (26).
3. The new energy battery heat preservation structure according to claim 1, characterized in that, The cooling mechanism comprises a first cooling pipe (16) and a second cooling pipe (15) connected to the input end of the cooling heat exchanger (12), the first cooling pipe (16) and the second cooling pipe (15) are communicated with the liquid nitrogen circulating control tank (13), and the second cooling pipe (15) is provided with a first delivery pump (14).
4. The new energy battery heat preservation structure according to claim 2, characterized in that, A pair of pipes are arranged on the heat conducting oil tank (22), a pair of expansion pipes (24) are connected to the pipes, a piston (23) is slidably arranged in the expansion pipe (24), a spring (25) is arranged between the piston (23) and the inner wall of the expansion pipe (24), and an exhaust port is arranged at the upper end of the expansion pipe (24).
5. The new energy battery heat preservation structure according to claim 1, characterized in that, A second delivery pump (18) is arranged on the second heating pipe (33), and a third delivery pump (17) is arranged on the first cooling pipe (10).
6. The new energy battery heat preservation structure according to claim 1, characterized in that, An air inlet pipe (4) and an air outlet pipe (5) are arranged on the battery protection shell (1), and air inlet one-way valves and air outlet one-way valves are arranged on the air inlet pipe (4) and the air outlet pipe (5) respectively.
7. The new energy battery heat preservation structure according to claim 2, characterized in that, A fourth delivery pump (20) is arranged on the first heating pipe (31), and a branch pipe (21) is arranged on the first heating pipe (31) and the second heating pipe (30), and valves are arranged on a pair of branch pipes (21).
8. The new energy battery heat preservation structure according to claim 1, characterized in that, The first pipeline (7) and the second pipeline (8) are respectively provided with a second three-way electromagnetic valve (34), and a bypass pipeline (35) is arranged on the pair of second three-way electromagnetic valves (34).