Power battery pack with heating function

Abstract

The utility model discloses a power battery pack with a heating function, which comprises a battery pack, a combustion heater, a heat exchanger, a heat exchanger embedded in the battery pack, a circulating medium pipeline, a temperature controller and a pump, and is characterized in that the heat exchanger embedded in the battery pack is connected with the combustion heater and the heat exchanger through the circulating medium pipeline; the heat exchanger is used for receiving and transferring heat to the battery pack; the temperature controller comprises a temperature sensor and a controller, and the temperature sensor is connected with the battery pack; the controller is respectively connected with the temperature sensor, the combustion heater and the heat exchanger; the pump is connected with the circulating medium pipeline. Therefore, a proper temperature is created for the power battery, the problem of performance reduction caused by a cold environment is solved, the efficiency of the battery is improved, the service life of the battery is prolonged, development of a new energy automobile is promoted, the battery is protected, heat can be supplied to the interior of the automobile, driving comfort in cold weather is guaranteed, the used combustion heater is efficient and environmentally friendly, and fuel consumption and pollution emission are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of new energy automobile power battery, especially a kind of power battery pack with heating. BACKGROUND

[0002] At present, whether it is lithium iron phosphate or ternary lithium battery, the performance in low temperature environment will be greatly discounted, the capacity is significantly reduced, and the battery life will also be seriously affected. This technical bottleneck seriously restricts the development and application of new energy vehicles, especially pure electric vehicles in cold regions. Under low temperature conditions, the endurance mileage of electric vehicles will be seriously reduced, and the driver will not dare to turn on the heater as driving a fuel car, which further limits the comfort and practicality of electric vehicles.

[0003] Traditional fuel vehicles mainly rely on the waste heat generated by the engine for heating in winter. This heating method is both efficient and environmentally friendly. However, pure electric vehicles usually do not allow the battery to generate too much heat while working in order to improve battery efficiency and reduce the risk of thermal runaway. In addition, the efficiency of heat generation by electricity is relatively low, so the heat generated by the three-electric system of pure electric vehicles is not enough to be effectively utilized for heating like the waste heat of fuel vehicle engines. This makes pure electric vehicles face greater challenges in winter heating.

[0004] Therefore, how to create a suitable working environment temperature for power batteries to improve their performance and prolong their service life has become a key technical problem in the field of new energy vehicles that needs to be solved. The solution to this problem is of great significance to promoting the development and application of new energy vehicles in cold regions. SUMMARY

[0005] The utility model aims to solve at least one of the technical problems in the related art to some extent.

[0006] To this end, the utility model aims to provide a power battery pack with heating to create a suitable temperature for power batteries, solve the performance decline problem caused by cold environment, improve battery efficiency and life, and promote the development of new energy vehicles. This technology not only protects the battery, but also provides heating for the vehicle, ensures driving comfort in cold weather, and uses efficient and environmentally friendly combustion heaters, reduces fuel consumption and pollution emissions.

[0007] The utility model provides a kind of power battery pack with heating, including battery pack, combustion heater and heat exchanger, heat exchanger embedded in battery pack, circulating medium pipeline, temperature controller and pump, wherein, the heat exchanger embedded in battery pack is connected with the combustion heater and heat exchanger by the circulating medium pipeline, for receiving and transferring heat to the battery pack;Temperature controller includes temperature sensor and controller, wherein, the temperature sensor is connected with the battery pack;The controller is connected with the temperature sensor and the combustion heater and heat exchanger respectively;The pump is connected with the circulating medium pipeline.

[0008] The utility model provides a kind of power battery pack with heating, creates suitable temperature for power battery, solves the performance decline problem caused by cold environment, improves battery efficiency and life, promotes new energy automobile development, this technology not only protects battery, can also heat for car, guarantees cold weather driving comfort, and the combustion heater used is efficient and environment-friendly, reduces fuel consumption and pollution emission.

[0009] In addition, according to the application above, a kind of power battery pack with heating can also have the following additional technical features:

[0010] Specifically, the combustion heater in the combustion heater and heat exchanger can burn gasoline, kerosene or natural gas.

[0011] Specifically, the temperature sensor is arranged in the battery pack.

[0012] Specifically, the pump is connected with the combustion heater and heat exchanger and the heat exchanger embedded in battery pack through the circulating medium pipeline, to form closed loop.

[0013] Specifically, it further includes battery cooling system, and the battery cooling system is connected with the circulating medium pipeline.

[0014] The utility model compared with prior art has the advantages of:

[0015] (1) by creating suitable working environment temperature for power battery, effectively solve the problem of performance decline and capacity reduction of traditional battery in cold environment, so as to significantly improve the efficiency of battery and prolong service life, further promote the popularization and development of new energy vehicles.

[0016] (2) not only provide suitable working environment for battery, but also can provide heating for car simultaneously, so that driver and passenger can also enjoy comfortable driving experience in cold weather.

[0017] (3) the fuel used by the combustion heater has high efficiency, and is only used for heating and does not participate in power generation, so that the consumption of fossil fuels is reduced, and the emission of pollutants in the combustion process is reduced, which is beneficial to environmental protection.

[0018] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or can be learned by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 A perspective view of a power battery pack with heating for an embodiment of the present application;

[0021] Figure 2 A perspective view of a power battery pack with heating for another embodiment of the present application;

[0022] Figure 3 A planar structure schematic diagram of a power battery pack with heating for an embodiment of the present application;

[0023] Figure 4 A control connection schematic diagram of a power battery pack with heating for an embodiment of the present application;

[0024] Figure 5 A connection structure schematic diagram of a power battery pack with heating for an embodiment of the present application.

[0025] As shown in the figure: 1, battery pack; 2, combustion heater and heat exchanger; 3, heat exchanger embedded in the battery pack; 4, circulating medium pipeline; 5, temperature controller; 6, pump; 7, battery cooling system; 51, temperature sensor; 52, controller. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0027] A power battery pack with heating according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0028] As Figures 1-5 shown, the utility model embodiment's one kind with heating's power battery package can include battery pack 1, combustion heater and heat exchanger 2, heat exchanger 3 embedded in battery pack, circulating medium pipeline 4, temperature controller 5 and pump 6, wherein, heat exchanger 3 embedded in battery pack is connected with combustion heater and heat exchanger 2 through circulating medium pipeline 4, for receiving and passing heat to battery pack 1, temperature controller 5 includes temperature sensor 51 and controller 52, wherein, temperature sensor 51 is connected with battery pack 1, controller 52 is connected with temperature sensor 51 and combustion heater and heat exchanger 2 respectively, pump 6 is connected with circulating medium pipeline 4.

[0029] Wherein, it can be understood that battery pack 1 is the core part of power battery package, for storing and providing electric energy. In low temperature environment, the performance of battery pack 1 can be affected, so it needs to be heated to keep its working temperature in the appropriate range.

[0030] Combustion heater and heat exchanger 2 are a combined device, including combustion heater and heat exchanger two parts. Combustion heater generates heat by burning, and these heat is transferred to circulating medium through heat exchanger. Circulating medium then transfers heat to battery pack 1 to achieve heating effect.

[0031] Heat exchanger 3 embedded in battery pack: heat exchanger is directly embedded into battery pack 1, which is in close contact with battery pack 1. Its role is to receive heat from circulating medium and transfer these heat evenly to battery pack 1 to ensure the overall temperature of battery pack 1 rises evenly.

[0032] Circulating medium pipeline 4 is used to connect combustion heater and heat exchanger 2 and heat exchanger 3 embedded in battery pack. Circulating medium (water) flows in the pipeline, transferring heat from combustion heater and heat exchanger 2 to heat exchanger in battery pack 1.

[0033] Temperature controller 5 includes two parts of temperature sensor 51 and controller 52.

[0034] Temperature sensor 51 is connected with battery pack 1 for real-time monitoring of the temperature of battery pack.

[0035] Controller 52 is connected with temperature sensor 51 and combustion heater and heat exchanger 2 respectively. It controls the heating power of combustion heater and heat exchanger 2 according to the data provided by temperature sensor 51 to adjust the temperature of battery pack 1.

[0036] It should be noted that the controller 52 described in this embodiment is a single-chip microcomputer, which is a highly integrated microcontroller containing processor, memory, input-output interface and other key components, capable of executing complex control algorithms and logical judgments.

[0037] Pump 6 is connected to the circulation medium pipeline 4, for driving the circulation medium to flow in the pipeline. Through the action of pump 6, the circulation medium can continuously flow from the combustion heater and heat exchanger 2 to the heat exchanger 3 embedded in the battery pack, and then flow back to the combustion heater and heat exchanger 2, forming a complete circulation loop.

[0038] Working principle:

[0039] When the temperature of the battery pack 1 is lower than the set value, the temperature sensor 51 transmits a signal to the controller 52.

[0040] The controller 52 starts the combustion heater and heat exchanger 2 and the pump 6 according to the received signal.

[0041] The combustion heater generates heat, and the heat is transferred to the circulation medium through the heat exchanger.

[0042] The circulation medium flows along the circulation medium pipeline 4 under the driving of the pump 6, and transfers heat to the heat exchanger 3 embedded in the battery pack.

[0043] The heat exchanger 3 uniformly transfers heat to the battery pack 1, so that the temperature of the battery pack rises.

[0044] When the temperature of the battery pack 1 reaches the set value, the controller 52 closes the combustion heater and heat exchanger 2 and the pump 6, and stops the heating process.

[0045] In an embodiment of the present application, as shown in Figures 1-5 The combustion heater in the combustion heater and heat exchanger 2 can burn gasoline, kerosene or natural gas.

[0046] It can be understood that the combustion heater can burn gasoline, kerosene, natural gas or other fuels that can be used for combustion. This diversity provides users with more choices and flexibility, which can be selected according to local fuel supply, cost-benefit analysis and environmental protection requirements and other factors.

[0047] It should be noted that fossil fuels are used for heating as fuel, not for generating power. Therefore, this does not violate the core definition of new energy vehicles, which uses non-fossil energy as a power source.

[0048] Fuel efficiency: when gasoline is used for combustion heating, its efficiency is nearly nine times that of electric heating. This shows that the efficiency of fossil fuels is much higher than electric heating in this specific use of heating. Therefore, from the perspective of energy efficiency, it is reasonable to use fossil fuels for heating.

[0049] Current situation of low-temperature technology: The low-temperature technology of power batteries has not yet been commercialized and matured, and creating a suitable environment temperature for the battery has become a feasible solution. Heating by burning a small amount of fossil fuel can significantly improve the working efficiency and performance of the battery in a low-temperature environment.

[0050] Environmental protection and energy saving: Although fossil fuel is used for heating, from the overall environmental protection and energy saving perspective, more pure electric vehicles are replaced by burning a small amount of fossil fuel instead of fuel vehicles, which overall saves the consumption of fossil fuel and reduces air pollution.

[0051] Expansion of automobile functions: The automobile can be regarded as a movable house. With the development of economy and the increase of time for people to work and stay in the car, it is a normal demand to provide heating facilities in the car. This change of understanding and concept helps us better understand the role and significance of the combustion heater in the utility model.

[0052] In an embodiment of the utility model, as shown in Figure 1 and Figure 4 , the temperature sensor 51 is arranged in the battery pack 1.

[0053] It can be understood that the temperature sensor 51 is carefully arranged in the battery pack 1. This means that it is directly in the working environment of the battery pack and can accurately capture the temperature change inside the battery pack. This arrangement ensures that the temperature data measured by the temperature sensor 51 can truly reflect the working state of the battery pack, thereby improving the accuracy and reliability of temperature control.

[0054] In an embodiment of the utility model, as shown in Figures 1-5 , the pump 6 is connected to the combustion heater and heat exchanger 2, the heat exchanger 3 embedded in the battery pack through the circulating medium pipeline 4, forming a closed loop.

[0055] It can be understood that the pump 6 serves as a power source, which draws the circulating medium (such as cooling water) from the heat exchanger 3 embedded in the battery pack through the circulating medium pipeline 4, and then sends it to the combustion heater and heat exchanger 2 for heating. The heated circulating medium is sent back to the heat exchanger 3 embedded in the battery pack through the circulating medium pipeline 4 again, where it transfers heat to the battery pack, thereby achieving the heating of the battery. Finally, the cooled circulating medium is drawn out by the pump 6 again, forming a complete closed loop.

[0056] The pump 6 serves as a power source, and the pump 6 is responsible for continuously flowing the circulating medium in the closed loop, ensuring that heat can be efficiently transferred.

[0057] The circulation medium pipeline 4 is a channel for circulation medium flow, which connects the combustion heater and heat exchanger 2 and the heat exchanger embedded in the battery pack 3, ensuring the heat transfer path.

[0058] The combustion heater and heat exchanger 2 is the main source of heat. Heat is generated by burning fuel and transferred to the circulation medium, raising its temperature.

[0059] The heat exchanger embedded in the battery pack 3 is the end point of heat transfer. Here, the heated circulation medium transfers heat to the battery pack 1, achieving battery heating. At the same time, the circulation medium is also cooled down, preparing for the next round of circulation into the pump 6.

[0060] In an embodiment of the present application, as shown in Figure 4 It also includes a battery cooling system 7 connected to the circulation medium pipeline 4.

[0061] Among them, it can be understood that the battery cooling system 7 is an independent cooling module, which realizes integration with the thermal management system by connecting with the circulation medium pipeline 4. Specifically, the battery cooling system 7 can include one or more coolers, radiators, fans and other components, which work together to carry away the heat generated by the battery pack and discharge it to the external environment or for reuse through the circulation medium pipeline 4.

[0062] Functions of the battery cooling system 7:

[0063] Temperature control: The battery cooling system 7 can monitor the temperature of the battery pack 1 in real time and adjust the cooling intensity as needed to ensure that the battery pack 1 always works within the optimal temperature range.

[0064] Improve safety: By timely removing the heat generated by the battery pack 1, the battery cooling system 7 helps prevent battery thermal runaway, fire and other safety hazards caused by excessive temperature.

[0065] Prolong battery life: Keeping the battery pack 1 working at an appropriate temperature can significantly reduce the battery's decay rate, thereby extending the battery's service life.

[0066] It should be noted that the control method of the present application can be automatically controlled by a controller. The control method of the controller can be realized by simple programming by those skilled in the art, which is common knowledge in the art. And the present application mainly protects the mechanical structure, so the control method and circuit connection of the present application will not be explained in detail.

[0067] It should be noted that the power battery pack with heating is an integrated component specially designed for pure electric vehicles, which is integrated into the vehicle architecture during the vehicle design stage. The temperature control system is part of the vehicle electronic control system and does not require manual installation or operation by the vehicle owner or driver. The driver only needs to select the "winter mode" to automatically start the battery heating function according to the actual needs of the vehicle electronic control system. This function is automatically activated when the external environment temperature is below the set threshold, and the burner will start working regardless of the battery being in a discharge or charging state, ensuring that the battery operates efficiently in a suitable temperature environment.

[0068] For the driver, the passenger car using this technology only needs to add fuel to the fuel bottle of the burner regularly, similar to refueling the vehicle. In addition, the working temperature of the heat transfer medium of the system is moderate, similar to engine coolant, and only needs to be supplemented as necessary without frequent maintenance. This design not only improves the performance of pure electric vehicles in low temperature environments, but also simplifies the operation process of the driver, enhances the convenience and safety of the overall use.

[0069] In summary, the power battery pack with heating of the embodiments of the present application creates a suitable temperature for the power battery, solves the performance degradation problem caused by cold environments, improves the battery efficiency and life, and promotes the development of new energy vehicles. This technology not only protects the battery, but also provides heating for the vehicle, ensures driving comfort in cold weather, and uses efficient and environmentally friendly combustion heaters to reduce fuel consumption and pollution emissions.

[0070] In the description of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0071] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0072] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and deform the above-mentioned embodiments within the scope of the utility model.

Claims

1. A power battery pack with heating, characterized in that, It includes a battery pack (1), a combustion heater and heat exchanger (2), a heat exchanger embedded in the battery pack (3), a circulating medium pipeline (4), a temperature controller (5), and a pump (6), wherein, The heat exchanger (3) embedded in the battery pack is connected to the combustion heater and the heat exchanger (2) through the circulating medium pipe (4) and is used to receive and transfer heat to the battery pack (1). The temperature controller (5) includes a temperature sensor (51) and a controller (52), wherein, The temperature sensor (51) is connected to the battery pack (1); The controller (52) is connected to the temperature sensor (51) and the combustion heater and heat exchanger (2) respectively; The pump (6) is connected to the circulating medium pipeline (4).

2. A power battery pack with heating according to claim 1, characterized in that, The combustion heater in the combustion heater and heat exchanger (2) can burn gasoline, kerosene or natural gas.

3. A power battery pack with heating according to claim 1, characterized in that, The temperature sensor (51) is located inside the battery pack (1).

4. A power battery pack with heating according to claim 1, characterized in that, The pump (6) is connected to the combustion heater and heat exchanger (2) and the heat exchanger (3) embedded in the battery pack through the circulating medium pipeline (4) to form a closed loop.

5. A power battery pack with heating according to claim 1, characterized in that, It also includes a battery cooling system (7), which is connected to the circulating medium pipeline (4).

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