Battery bottom guard plate assembly, power battery assembly and vehicle

Abstract

The present application provides a battery bottom guard plate assembly, a power battery assembly and a vehicle; the battery bottom guard plate assembly includes a power battery pack, a temperature adjustment assembly, a temperature acquisition module, a control module, an energy recovery module and a protective structure; the temperature adjustment assembly and the protective structure are arranged in sequence at the lower end of the power battery pack; the temperature acquisition module is arranged on the power battery pack, and is used to collect the temperature of the power battery pack; the temperature adjustment assembly is electrically connected to the control module, and is used to adjust the operating temperature of the power battery pack according to the temperature information collected by the temperature acquisition module; the temperature adjustment assembly is electrically connected to the power battery pack and the energy recovery module, respectively, and is used to obtain electrical energy from the power battery pack and the energy recovery module. The utility model improves the vehicle's cruising range and increases the service life of the power battery.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery bottom guard plate assembly, a power battery assembly and a vehicle. Background Art

[0002] The existing underbody guard is generally installed at the bottom of the vehicle, which has the function of improving the vehicle's NVH performance and protecting the chassis components; the battery underbody guard is installed at the bottom of the battery of the electric vehicle, mainly used to prevent the battery from being scratched and protect the battery. The purpose of battery thermal management is to keep the battery at a good operating temperature, which directly affects the vehicle's endurance and the service life of the battery. The current battery temperature control method mainly arranges the heating equipment directly inside the power battery assembly. This arrangement results in low battery energy density, which is very difficult to repair after damage. At the same time, because the heating equipment mainly relies on the conversion of battery power into heat energy, it affects the range of electric vehicles under low temperature conditions, resulting in a reduction in range.

[0003] The utility model provides a battery bottom guard plate assembly, which can prevent the bottom guard plate from causing battery loss due to external factors such as scratches and collisions, and can also ensure that the battery works in the optimal working environment through its own heating and cooling, thereby improving the vehicle's mileage and the battery's service life. Utility Model Content

[0004] The purpose of this application is to provide a battery bottom guard plate assembly, a power battery assembly and a vehicle, which overcome the technical problems existing in the background technology. The specific scheme is as follows:

[0005] A battery bottom guard plate assembly, comprising a power battery pack, a temperature regulating assembly, a temperature acquisition module, a control module, an energy recovery module and a protective structure; the temperature regulating assembly and the protective structure are sequentially arranged on the lower surface of the power battery pack;

[0006] The temperature acquisition module is arranged on the power battery pack and is used to acquire the temperature of the power battery pack;

[0007] The temperature adjustment component is electrically connected to the control module and is used to adjust the operating temperature of the power battery pack according to the temperature information collected by the temperature collection module;

[0008] The temperature adjustment component is electrically connected to the power battery pack and the energy recovery module, respectively, and is used to obtain electrical energy from the power battery pack and the energy recovery module.

[0009] Furthermore, the temperature regulating component includes: a cooling circulation loop, a heating device, a cooling device and a circulation pump; the cooling circulation loop is arranged at the bottom of the power battery; the heating device, the cooling device and the circulation pump are all arranged in the cooling circulation loop.

[0010] Furthermore, the heating device is a thermistor.

[0011] Furthermore, the cooling device is a semiconductor refrigeration plate.

[0012] Furthermore, the protective structure includes a bottom guard plate, a cooling circulation loop is arranged on the upper surface of the bottom guard plate, and the peripheral edge of the bottom guard plate is fixedly connected to the power battery pack by bolts.

[0013] Furthermore, a plurality of strip-shaped reinforcing ribs are evenly arranged on the upper surface and the lower surface of the bottom guard plate.

[0014] Furthermore, the energy recovery module is electrically connected to the braking system and / or the electric drive system.

[0015] In a second aspect, the utility model provides a power battery assembly, including the battery bottom guard plate assembly.

[0016] In a third aspect, the utility model provides a vehicle, comprising the power battery assembly.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The battery bottom guard plate assembly provided by the utility model has the following advantages: 1. The temperature information of the power battery pack is obtained through the temperature acquisition module, and the operating temperature of the power battery pack is adjusted through the temperature adjustment assembly; 2. The temperature adjustment assembly described in the present application adopts two energy supply modes, namely the energy recovery module and the power battery pack, and is not completely dependent on the power battery pack, thereby improving the cruising range of the vehicle; 3. Since the temperature adjustment assembly is arranged on the outside of the power battery pack, it is convenient for workers to carry out subsequent maintenance and is very convenient to disassemble and assemble; 4. The protection effect on the battery is enhanced through the structural optimization design of the protective layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the overall structure of the battery bottom guard plate assembly.

[0020] In the figure:

[0021] 1. Power battery pack;

[0022] 2. Temperature regulating assembly; 21. Cooling circulation loop; 22. Mounting shell;

[0023] 3. Temperature acquisition module;

[0024] 4. Control module;

[0025] 5. Energy recovery module;

[0026] 6. Protective structure; 61. Bottom guard plate; 62. Strip reinforcement ribs. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of this application clearer, the following will be combined with the attached Figure 1 The present application is further described in detail. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] It should be understood that, although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0029] A battery bottom guard plate assembly includes a power battery pack 1, a temperature adjustment assembly 2, a temperature acquisition module 3, a control module 4, an energy recovery module 5 and a protective structure 6; the temperature adjustment assembly 2 and the protective structure 6 are arranged in sequence on the lower surface of the power battery pack 1.

[0030] Optionally, the temperature acquisition module 3 is a temperature collector or a temperature sensor; the control module 4 is a single chip microcomputer.

[0031] The temperature acquisition module 3 is electrically connected to the control module 4 ; the temperature acquisition module 3 is arranged on the power battery pack 1 , and is used to acquire temperature information of the power battery pack 1 , and send the temperature information to the control module 4 .

[0032] The temperature adjustment component 2 is electrically connected to the control module 4 and is used to adjust the operating temperature of the power battery pack 1 according to the temperature information collected by the temperature collection module 3 .

[0033] The control module 4 is electrically connected to the temperature adjustment component 2 , and controls the temperature adjustment component 2 to adjust the operating temperature of the power battery pack 1 according to the temperature information sent by the temperature acquisition module 3 .

[0034] The temperature adjustment component 2 is electrically connected to the power battery pack 1 and the energy recovery module 5 , respectively, and is used to obtain electrical energy from the power battery pack 1 and the energy recovery module 5 .

[0035] The temperature regulating component 2 is arranged on the upper surface of the protective structure 6 and can heat the protective structure 6. The advantage is that it can effectively prevent the problem of difficulty in battery replacement due to ice formation between the vehicle power battery pack 1 and the protective structure 6.

[0036] Furthermore, the control module 4 is electrically connected to the vehicle speed sensor, and controls the power battery pack 1 or the energy recovery module 5 to supply power to the temperature adjustment component 2 according to the vehicle speed information collected by the vehicle speed sensor; the control module 4 includes at least two switch control circuits; for the sake of convenience of description, the two switch control circuits are respectively referred to as the first switch control circuit and the second switch control circuit; the first switch control circuit includes a control module, a vehicle speed sensor, a temperature adjustment component, a power battery pack, and a first relay electrically connected in sequence; the second switch control circuit includes a control module, a vehicle speed sensor, a temperature adjustment component, an energy recovery module, and a second relay electrically connected in sequence; the first switch control circuit and the second switch control circuit respectively correspond to two energy supply modes of the temperature adjustment component 2, namely mode one and mode two.

[0037] It can be understood that in the present embodiment, the energy supply method of the temperature adjustment component 2 is set to two modes, mode one is when the vehicle speed is zero, that is, the vehicle is stationary; mode two is the vehicle driving mode, and the vehicle speed is not zero; wherein, in mode one, the power battery pack 1 supplies power to the temperature adjustment component 2; and in mode two, the energy recovery module 5 supplies power to the temperature adjustment component 2; the advantage of this design is that, compared with the prior art that completely relies on the power battery pack 1 to supply power to the temperature adjustment component 2, in the present embodiment, two power supply methods are used to supply power to the power battery pack 1, which not only improves the service life of the vehicle's odometer power battery, but also further recovers the vehicle's energy to achieve energy-saving effects.

[0038] The energy recovery module 5 is electrically connected to the brake system and / or the electric drive system, and is used to recover the mechanical energy generated by the brake system and / or the electrical energy of the electric drive system.

[0039] Optionally, the temperature adjustment component 2 includes: a cooling circulation loop 21, a heating device, a cooling device and a circulating pump; the cooling circulation loop 21 is arranged in a snake shape at the bottom of the power battery and is filled with coolant; the heating device, the cooling device and the circulating pump are all arranged in the cooling circulation loop 21, and are used to heat, cool and provide driving force for the coolant in the cooling circulation loop 21; the heating device, the cooling device and the circulating pump are respectively electrically connected to the power battery pack 1, the energy recovery module 5 and the control module 4.

[0040] In this embodiment, the heating device, the cooling device and the circulating pump are fixed in the mounting shell 22 .

[0041] Wherein, the heating device is a thermistor; and the cooling device is a semiconductor cooling sheet.

[0042] Optionally, the protective structure 6 includes a bottom guard plate 61, a cooling circulation loop 21 is arranged on the upper surface of the bottom guard plate 61, and the peripheral edge of the bottom guard plate 61 is fixedly connected to the power battery pack 1 by bolts; a plurality of strip-shaped reinforcing ribs 62 are evenly arranged on the upper and lower surfaces of the bottom guard plate; the advantage is that the strength of the bottom guard plate 61 is strengthened as a whole through this design, thereby improving the protective effect of the power battery.

[0043] In a second aspect, the utility model provides a power battery assembly, including the battery bottom guard plate assembly.

[0044] In a third aspect, the utility model provides a vehicle, comprising the power battery assembly.

[0045] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

Claims

1. A battery bottom guard plate assembly, characterized in that: It comprises a power battery pack (1), a temperature adjustment component (2), a temperature acquisition module (3), a control module (4), an energy recovery module (5) and a protective structure (6); the temperature adjustment component (2) and the protective structure (6) are arranged in sequence on the lower surface of the power battery pack (1); The temperature acquisition module (3) is arranged on the power battery pack (1) and is used to acquire the temperature of the power battery pack (1); The temperature adjustment component (2) is electrically connected to the control module (4) and is used to adjust the operating temperature of the power battery pack (1) according to the temperature information collected by the temperature collection module (3); The temperature adjustment component (2) is electrically connected to the power battery pack (1) and the energy recovery module (5) respectively, and is used to obtain electrical energy from the power battery pack (1) and the energy recovery module (5).

2. The battery bottom guard plate assembly according to claim 1, characterized in that: The temperature regulating component (2) comprises: a cooling circulation loop (21), a heating device, a cooling device and a circulation pump; the cooling circulation loop (21) is arranged at the bottom of the power battery; the heating device, the cooling device and the circulation pump are all arranged in the cooling circulation loop (21).

3. The battery bottom guard plate assembly according to claim 2, characterized in that: The heating device is a thermistor.

4. The battery bottom guard plate assembly according to claim 2 or 3, characterized in that: The cooling device is a semiconductor refrigeration sheet.

5. The battery bottom guard plate assembly according to claim 2, characterized in that: The protective structure (6) comprises a bottom guard plate (61), a cooling circulation loop (21) is arranged on the upper surface of the bottom guard plate (61), and the peripheral edge of the bottom guard plate (61) is fixedly connected to the power battery pack (1) by bolts.

6. The battery bottom guard plate assembly according to claim 5, characterized in that: A plurality of strip-shaped reinforcing ribs (62) are evenly arranged on the upper surface and the lower surface of the bottom guard plate (61).

7. The battery bottom guard plate assembly according to claim 1, characterized in that: The energy recovery module (5) is electrically connected to the brake system and / or the electric drive system.

8. A power battery assembly, characterized in that: A battery bottom guard plate assembly comprising any one of claims 1-7.

9. A vehicle, characterized in that: Including the power battery assembly as described in claim 8.

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