Automobile battery system
By starting the battery at low temperature first and heating the high-voltage power battery, the problem of low efficiency and fast capacity decay at low temperatures is solved, and the normal operation and life of the high-voltage power battery at suitable temperatures is achieved.
Patent Information
- Application Number
- CN202422234708.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The battery system of a new energy vehicle is low in starting the battery at low temperatures, and the power battery capacity decays quickly. The existing heating method requires the power battery to start first and then heat it, which damages the health of the battery.
The low-temperature starting battery is electrically connected to the heater. The low-temperature starting battery is started first to provide the power to heat the high-voltage power battery. After the temperature reaches the working temperature, the high-voltage power battery starts.
Ensure that high-voltage power batteries work at appropriate temperatures, improve working efficiency and extend service life, and reduce damage to the battery at low temperatures.
Smart Images
Figure CN223252789U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery systems, in particular to an automobile battery system. Background Art
[0002] Existing new energy vehicle battery systems have the problems of low starting battery efficiency and rapid power battery capacity decay at low temperatures. Forced starting of the power battery system at low temperatures not only results in low operating efficiency, but also seriously damages the health of the battery. Existing solutions include some heating methods such as battery preheating, heating equipment in the battery pack, and liquid circulation heating, which can heat the power battery. However, they all start working first through the power battery, and then the power battery's electrical energy drives the heating of other equipment. In other words, the power battery must first start at low temperatures, and then heat itself to increase its own temperature. However, these methods all require the power battery to be forced to start at low temperatures, which is very harmful to the battery. Utility Model Content
[0003] The utility model provides an automobile battery system, which aims to solve the problems of low starting battery efficiency and rapid capacity decay of power batteries in traditional new energy automobile battery systems at low temperatures.
[0004] In response to the problems existing in the prior art, the present invention provides an automotive battery system, comprising a low-temperature starting battery, a high-voltage power battery, a first temperature sensor, and a heater. The heater is used to heat the high-voltage power battery, and the first temperature sensor is used to sense the ambient temperature.
[0005] The low-temperature starting battery is used to start when the ambient temperature is lower than a preset temperature value. The low-temperature starting battery is electrically connected to the heater. The high-voltage power battery is used to start when it is heated to an operating temperature.
[0006] According to an automotive battery system provided by the present invention, the low-temperature starting battery includes a first starting battery and a second starting battery, the first starting battery and the second starting battery are both electrically connected to the heater, the first starting battery is used to start when the ambient temperature is less than or equal to a first preset temperature value, and the second starting battery is used to start when the ambient temperature is greater than the first preset temperature value.
[0007] According to an automobile battery system provided by the present invention, the first starting battery includes a sodium starting battery, and the second starting battery includes a lithium starting battery.
[0008] According to an automobile battery system provided by the present invention, the first preset temperature value is -20°C.
[0009] According to an automobile battery system provided by the present utility model, the automobile battery system includes a battery compartment, and the low-temperature starting battery and the high-voltage power battery are both arranged in the battery compartment.
[0010] According to an automobile battery system provided by the present invention, the heater includes a heating plate arranged on the bottom wall of the battery compartment, and the high-voltage power battery is arranged on the heating plate.
[0011] According to an automobile battery system provided by the present invention, the heater includes a heating belt provided on the high-voltage power battery, and the heating belt is arranged around the peripheral wall of the high-voltage power battery.
[0012] According to an automotive battery system provided by the present invention, a guide rail is provided on the bottom wall of the battery compartment, and a partition is slidably provided on the guide rail. One side of the partition forms a first installation cavity, and the other side forms a second installation cavity. The first installation cavity is provided with the low-temperature starting battery, and the second installation cavity is provided with the high-voltage power battery.
[0013] According to an automotive battery system provided by the present invention, the high-voltage power battery includes a plurality of high-voltage power cells, and the partition is used to slidably adjust the volume of the second mounting cavity to adapt to the number of the high-voltage power cells.
[0014] According to an automobile battery system provided by the present utility model, the system further includes a second temperature sensor provided on the high-voltage power battery, wherein the second temperature sensor is used to sense the temperature of the high-voltage power battery.
[0015] The automotive battery system provided by this utility model starts the low-temperature starting battery first in low temperatures, and can provide excess power to the heater to heat the high-voltage power battery. When the high-voltage power battery temperature rises to the operating temperature, the high-voltage power battery can be started. This ensures that the high-voltage power battery operates at an appropriate temperature, ensuring its operating efficiency and service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 It is a structural schematic diagram of the automobile battery system provided by the utility model.
[0018] Figure numerals: 1: first starting battery; 2: second starting battery; 3: high-voltage power battery; 4: high-voltage power cell; 5: first temperature sensor; 6: second temperature sensor; 7: heating plate; 8: battery compartment; 9: guide rail; 10: partition. DETAILED DESCRIPTION
[0019] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.
[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.
[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0024] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.
[0025] The following combination Figure 1 The utility model describes an automobile battery system.
[0026] In view of the problems in traditional technologies of new energy vehicle battery systems such as low starting battery efficiency and rapid capacity decay of power batteries at low temperatures, the present utility model provides an automotive battery system, including a low-temperature starting battery, a high-voltage power battery 3, a first temperature sensor 5 and a heater. The heater is used to heat the high-voltage power battery 3, and the first temperature sensor 5 is used to sense the ambient temperature.
[0027] Specifically, when the vehicle battery system receives a start command, it will first obtain the ambient temperature sensed by the first temperature sensor 5. If the ambient temperature is lower than the preset temperature value, the low-temperature starting battery will start and provide the power required by the vehicle. The excess power of the low-temperature starting battery will be transferred to the heater, which will heat the high-voltage power battery 3. When the temperature of the high-voltage power battery 3 is equal to or greater than the operating temperature, the high-voltage power battery 3 will start and provide the power required by the vehicle. After the high-voltage power battery 3 is started, the low-temperature starting battery can continue to work for a period of time before shutting down or it can be shut down immediately. The present invention does not limit this. Correspondingly, if the ambient temperature is higher than the preset temperature value, the high-voltage power battery 3 will start directly after receiving the start command.
[0028] It should be noted that the automotive battery system provided by the present invention starts the low-temperature starting battery first when temperatures are low, and can supply excess power to the heater to heat the high-voltage power battery 3. Once the temperature of the high-voltage power battery 3 rises to the operating temperature, the high-voltage power battery 3 can be started. This ensures that the high-voltage power battery 3 operates at an appropriate temperature, guaranteeing its operating efficiency and service life.
[0029] Low-temperature starting batteries offer rapid starting capabilities at low temperatures, making them less susceptible to operation at low temperatures. However, different battery types exhibit varying starting performance at different low temperatures, with some batteries only able to start at temperatures around freezing, while others can start at temperatures tens of degrees below freezing. Specifically, the technical solution provided by the present invention comprises a first starting battery 1 and a second starting battery 2, both electrically connected to a heater. The first starting battery 1 is designed to start when the ambient temperature is equal to or less than a first preset temperature value, while the second starting battery 2 is designed to start when the ambient temperature exceeds the first preset temperature value. It is understood that the first starting battery 1 is more resistant to low temperatures than the second starting battery 2 and is suitable for use in extreme low-temperature conditions, while the second starting battery 2 is suitable for use in moderate low-temperature conditions. In an optional embodiment, the first starting battery 1 comprises a sodium starting battery, and the second starting battery 2 comprises a lithium starting battery. The first preset temperature value is -20°C.
[0030] Furthermore, in order to reduce the overall volume of the automobile battery system, the automobile battery system includes a battery compartment 8, and the low-temperature starting battery and the high-voltage power battery 3 are both arranged in the battery compartment 8. This does not require additional space, improves the utilization rate of the vehicle body volume, and shortens the signal transmission time between the two and shortens the response time.
[0031] As previously mentioned, the heater is used to heat the high-voltage power battery 3. In an optional embodiment, the heater includes a heating plate 7 disposed on the bottom wall of the battery compartment 8. The high-voltage power battery 3 is mounted on the heating plate 7. The heating plate 7 can receive power from the low-temperature starting battery to heat the high-voltage power battery 3. In other optional embodiments, the heater includes a heating belt disposed on the high-voltage power battery 3, which is arranged around the circumference of the high-voltage power battery 3. The heating belt can be detachably connected to the high-voltage power battery 3, such as by adhesive bonding or snap-fit connection, but this is not limited in the present invention.
[0032] Furthermore, to separate the low-temperature starting battery and the high-voltage power battery 3, the bottom wall of the battery compartment 8 is provided with two guide rails 9, on which a partition 10 is slidably mounted. In an optional embodiment, the ends of the partition 10 are respectively provided with sliders, which are slidably connected to the corresponding guide rails 9. One side of the partition 10 forms a first mounting cavity, and the other side forms a second mounting cavity. The first mounting cavity is provided with the low-temperature starting battery, and the second mounting cavity is provided with the high-voltage power battery 3.
[0033] Furthermore, in conventional technology, the high-voltage power battery 3 is all integrated. In the technical solution provided by the present utility model, the high-voltage power battery 3 includes a plurality of high-voltage power cells 4, and the partition 10 is used to slidably adjust the volume of the second mounting cavity to accommodate the number of high-voltage power cells 4. It is understandable that the high-voltage power cells 4 are directly integrated into the battery compartment 8, and the volume of the high-voltage power battery 3 can be adjusted by adjusting the partition 10, that is, the number of high-voltage power cells 4 can be adjusted, thereby adjusting the vehicle's range as needed (for example, a low-cost vehicle can reduce the number of high-voltage power cells 4, reduce range, and increase costs, but the battery compartment 8 remains unchanged, and the range can be upgraded later).
[0034] As mentioned above, the first temperature sensor 5 is used to sense the ambient temperature, and the first temperature sensor 5 can be set on the surface of the battery compartment 8. Furthermore, it is also necessary to detect the temperature of the high-voltage power battery 3 after the heater heats the high-voltage power battery 3, so that it can start when it is heated to the operating temperature. Specifically, the automotive battery system also includes a second temperature sensor 6 provided on the high-voltage power battery 3, and the second temperature sensor 6 is used to sense the temperature of the high-voltage power battery 3. The second temperature sensor 6 is provided in the second mounting cavity, and can also be provided on the high-voltage power battery 3. Furthermore, it can also be set to multiple, distributed in different positions, and the average value is taken during actual operation to represent the temperature of the high-voltage power battery 3.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. An automotive battery system, characterized in that: The system comprises a low-temperature starting battery, a high-voltage power battery, a first temperature sensor, and a heater, wherein the heater is used to heat the high-voltage power battery, and the first temperature sensor is used to sense the ambient temperature; The low-temperature starting battery is used to start when the ambient temperature is lower than a preset temperature value. The low-temperature starting battery is electrically connected to the heater. The high-voltage power battery is used to start when it is heated to an operating temperature.
2. The automotive battery system according to claim 1, wherein: The low-temperature starting battery includes a first starting battery and a second starting battery. The first starting battery and the second starting battery are both electrically connected to the heater. The first starting battery is used to start when the ambient temperature is less than or equal to a first preset temperature value, and the second starting battery is used to start when the ambient temperature is greater than the first preset temperature value.
3. The automotive battery system according to claim 2, wherein: The first starting battery includes a sodium starting battery, and the second starting battery includes a lithium starting battery.
4. The automotive battery system according to claim 3, wherein: The first preset temperature value is -20°C.
5. The automotive battery system according to claim 1, wherein: The automobile battery system includes a battery compartment, and the low-temperature starting battery and the high-voltage power battery are both arranged in the battery compartment.
6. The automotive battery system according to claim 5, characterized in that: The heater includes a heating plate arranged on the bottom wall of the battery compartment, and the high-voltage power battery is arranged on the heating plate.
7. The automotive battery system according to claim 5, wherein: The heater includes a heating belt provided on the high-voltage power battery, and the heating belt is arranged around the peripheral wall of the high-voltage power battery.
8. The automotive battery system according to claim 5, wherein: The bottom wall of the battery compartment is provided with a guide rail, and a partition is slidably provided on the guide rail. One side of the partition forms a first installation cavity, and the other side forms a second installation cavity. The first installation cavity is provided with the low-temperature starting battery, and the second installation cavity is provided with the high-voltage power battery.
9. The automotive battery system according to claim 8, wherein: The high-voltage power battery includes a plurality of high-voltage power cells, and the partition is used to slidably adjust the volume of the second installation cavity to adapt to the number of the high-voltage power cells.
10. The automotive battery system according to claim 1, wherein: It also includes a second temperature sensor provided on the high-voltage power battery, and the second temperature sensor is used to sense the temperature of the high-voltage power battery.