Battery box and automobile

Abstract

The utility model discloses a battery box and an automobile, and relates to the technical field of automobiles, the battery box comprises a box body and a heat preservation bottom protection plate, the box body is provided with an installation cavity, the installation cavity is used for installing a battery, and the bottom of the box body is provided with a heat exchange opening communicated with the installation cavity; the heat preservation bottom protection plate is detachably connected with the box body so as to cover or open the heat exchange opening. According to the technical scheme provided by the utility model, the problem of contradiction between heat dissipation and heat preservation of the battery system can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a battery box and an automobile. Background Art

[0002] The battery system is temperature sensitive. Its own temperature and the temperature of the environment it is in directly affect key characteristics such as battery cycle life, charging power, output power and safety. If the battery system works in a high temperature environment for a long time, the battery cycle life will be shortened and the service life of the battery system will be reduced; at low temperatures, the battery charge and discharge current is small, the available capacity is low, and the battery system cannot work normally, affecting the normal use of electric vehicle users.

[0003] At present, some electric vehicles ensure that the power battery system can be used normally in winter by sticking thermal insulation cotton on the inner wall of the battery box of the battery system. However, in the high temperature environment of summer, this battery system cannot effectively dissipate heat and cannot ensure that the batteries in the box work at a suitable ambient temperature. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery box and a car, aiming to solve the problem that the heat dissipation and heat preservation of the battery system cannot be taken into account at the same time.

[0005] In order to achieve the above-mentioned purpose, the battery box proposed in the utility model comprises:

[0006] A box body, wherein the box body is provided with an installation cavity, wherein the installation cavity is used for installing a battery, and a heat exchange opening communicating with the installation cavity is provided at the bottom of the box body; and

[0007] A thermal insulation bottom guard plate is detachably connected to the box body to cover or open the heat exchange opening.

[0008] In one embodiment, the thermal insulation bottom guard plate includes a protective layer and a thermal insulation layer, and the thermal insulation layer is arranged on the side of the protective layer facing the box body.

[0009] In one embodiment, the protective layer and the thermal insulation layer are both provided with mounting holes, and screws pass through the mounting holes of the protective layer and the thermal insulation layer in sequence and are screwed into the box body to fasten the thermal insulation layer between the box body and the protective layer.

[0010] In one embodiment, the battery box further comprises a heat exchange plate, which is disposed at the bottom of the box body, and two opposite side surfaces of the heat exchange plate are in contact with the battery and the thermal insulation bottom protective plate respectively.

[0011] In one embodiment, heat-conducting glue is filled between the heat exchange plate and the battery.

[0012] In one embodiment, two groove walls of the installation cavity that are arranged opposite to each other are respectively provided with clamping grooves, and the clamping grooves extend along the length direction of the battery box, and the clamping grooves are used to engage with clamping ribs on opposite sides of the battery.

[0013] In one embodiment, the battery box further includes a temperature sensor and a prompt module, and the temperature sensor is electrically connected to the prompt module.

[0014] In one embodiment, the temperature sensor comprises a first temperature sensor, and the first temperature sensor is used to detect the temperature of the environment; and / or

[0015] The temperature sensor includes a second temperature sensor, and the second temperature sensor is used to detect the temperature of the battery.

[0016] In one implementation, the prompt module is configured as a vehicle computer and / or a mobile phone APP.

[0017] The utility model also provides a car, comprising the battery box.

[0018] The technical solution of the present invention adopts a thermal insulation bottom guard plate that is detachable from the box body, so that the user can open or cover the heat exchange opening of the box body as needed. For example, but not limited to, in a high temperature environment in summer, the battery needs to dissipate heat to the environment, and the battery needs to have a good heat dissipation effect. At this time, the user can remove the thermal insulation bottom guard plate to shorten the heat exchange path between the battery and the air in the environment, and increase the heat exchange rate between the battery and the air, thereby improving the heat dissipation efficiency of the battery and preventing the battery temperature from being too high and maintaining it within an appropriate range; in low temperature conditions in winter, when the battery needs to be kept warm, the user can install the thermal insulation bottom guard plate to increase the thermal insulation performance of the battery, reduce the heat exchange between the bottom of the battery and the air in the environment, reduce the heat dissipated by the battery to the environment, improve the heating effect of the battery, and thus reduce the energy consumption of the entire vehicle. It can be seen that the present solution can cover or open the heat exchange opening according to the needs of the battery, thereby effectively solving the problem of the contradiction between heat dissipation and heat preservation of the battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the explosion structure of a battery box according to an embodiment of the present invention.

[0021] Description of Figure Numbers:

[0022] 100, box body; 200, thermal insulation bottom guard plate; 210, protective layer; 220, thermal insulation layer; 300, battery; 310, clamping rib; 400, heat exchange plate.

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] Electric vehicles currently on the market generally use a design in which thermal insulation cotton is pasted on the inner wall of the battery box of the battery system to ensure that the battery system can be used normally in winter. However, in the high temperature environment of summer, this power battery system cannot effectively dissipate heat and cannot ensure that the batteries in the box work at a suitable ambient temperature.

[0028] The utility model provides a battery box.

[0029] See also Figure 1In one embodiment of the utility model, the battery box includes a box body 100 and a thermal insulation bottom protective plate 200. The box body 100 is provided with an installation cavity for installing a battery 300. The bottom of the box body 100 is provided with a heat exchange opening connected to the installation cavity; the thermal insulation bottom protective plate 200 is detachably connected to the box body 100 to cover or open the heat exchange opening.

[0030] The technical solution of the utility model adopts a heat-insulating bottom guard plate 200 that is detachable from the box body 100, so that the user can open or cover the heat exchange opening of the box body 100 as needed. For example, but not limited to, in a high temperature environment in summer, the battery 300 needs to dissipate heat to the environment, and the battery 300 needs to have a good heat dissipation effect. At this time, the user can remove the heat-insulating bottom guard plate 200 to shorten the heat exchange path between the battery 300 and the air in the environment, and increase the heat exchange rate between the battery 300 and the air, thereby improving the heat dissipation efficiency of the battery 300, so that the temperature of the battery 300 does not exceed 100%. too high, keep it within a suitable range; under low temperature conditions in winter, when the battery 300 needs to be kept warm, the user can install a thermal insulation bottom guard plate 200, thereby increasing the thermal insulation performance of the battery 300, reducing the heat exchange between the bottom of the battery 300 and the air in the environment, reducing the heat lost from the battery 300 to the environment, and improving the heating effect of the battery 300, thereby reducing the energy consumption of the whole vehicle. It can be seen that this solution can cover or open the heat exchange opening according to the needs of the battery 300, thereby effectively solving the problem of the contradiction between heat dissipation and thermal insulation of the battery 300 system and reducing the energy consumption of the whole vehicle.

[0031] Secondly, setting the removable thermal insulation bottom guard plate 200 at the bottom of the box body 100 can also reduce the insulation structure inside the battery box, save space in the battery box, and thus improve the versatility of the battery box; and installing the thermal insulation bottom guard plate 200 at the bottom of the box body 100 can block stone impacts on the bottom of the battery box during the operation of the car, reducing the risk of failure of the battery 300; and when a bump occurs on the bottom of the battery box, it can play a buffering role, reducing the risk of damage to the battery 300.

[0032] Among them, the thermal insulation bottom guard plate 200 includes a protective layer 210 and an insulating layer 220. The insulating layer 220 is arranged on the side of the protective layer 210 facing the box body 100. It can be understood that arranging the insulating layer 220 between the box body 100 and the protective layer 210 is beneficial to increase the thermal insulation performance of the insulating layer 220.

[0033] Optionally, the insulation layer 220 is bonded to the protective layer 210; it can be understood that the bonding connection has good sealing properties, which can improve the sealing between the insulation layer 220 and the protective layer 210, thereby increasing the sealing between the insulation bottom guard plate 200 and the box body 100. Secondly, the bonding operation process is simple, which can improve the production efficiency of the insulation bottom guard plate 200, thereby improving the production efficiency of the battery box.

[0034] Optionally, the thermal insulation bottom guard plate 200 is connected to the box body 100 by screw locking. It can be understood that the installation steps of the screws are simple and easy to operate. The use of screw locking connection to fasten the thermal insulation bottom guard plate 200 and the box body 100 can improve the installation efficiency of the battery box. Of course, the utility model is not limited to this. In other embodiments, the thermal insulation bottom guard plate 200 can also be connected to the box body 100 by screw locking and buckle. The buckle method can pre-fix and position the thermal insulation bottom guard plate 200, which can improve the installation efficiency of the screw locking connection while improving the installation stability of the thermal insulation bottom guard plate 200.

[0035] Furthermore, in one embodiment, both the protective layer 210 and the thermal insulation layer 220 are provided with mounting holes, and the screws pass through the mounting holes of the protective layer 210 and the thermal insulation layer 220 in turn, and are screwed into the box body 100 to fasten the thermal insulation layer 220 between the box body 100 and the protective layer 210. It can be understood that the screws pass through the mounting holes of the protective layer 210 and the thermal insulation layer 220 in turn, and are screwed into the box body 100, so that the thermal insulation layer 220 and the protective layer 210 can be fastened together while the thermal insulation bottom guard plate 200 is installed to the box body 100, which can save installation steps and thus improve production efficiency.

[0036] Optionally, the material of the insulation layer 220 is configured as an elastic insulation material, so that when the screws pass through the mounting holes of the protective layer 210 and the insulation layer 220 in turn and are screwed into the box body 100, the tightening force of the screws can be used to gradually compress the insulation layer 220, thereby increasing the insulation performance between the insulation bottom guard plate 200 and the box body 100.

[0037] The material of the thermal insulation layer 220 is foam, because foam not only has excellent thermal insulation, but also has excellent shock absorption. In this way, the thermal insulation bottom guard plate 200 can effectively withstand external impact or vibration when the bottom of the battery box is hit by stones or bumped during the operation of the car, and can play a buffering role, effectively protecting the battery 300 and reducing the risk of failure of the battery 300. Of course, the utility model is not limited to this. In other embodiments, the material of the thermal insulation layer 220 can also be configured as glass wool or rock wool board.

[0038] Optionally, the battery box also includes a heat exchange plate 400, which is arranged at the bottom of the box body 100, and the opposite sides of the heat exchange plate 400 are respectively in contact with the battery 300 and the thermal insulation bottom protective plate 200; when the heat exchange plate 400 provides cooling or heating to the battery 300, the thermal insulation bottom protective plate 200 is installed on the box body 100, which can increase the thermal insulation performance inside the box body 100, thereby reducing the heat absorption or heat loss of the heat exchange plate 400 to the external environment.

[0039] It should be noted that, in a low-temperature environment, when the battery 300 needs to be heated, the side of the heat exchange plate 400 with a higher temperature exchanges heat with the battery 300 to heat the battery 300; if there is no thermal insulation bottom guard plate 200, the other side of the heat exchange plate 400 with a higher temperature will dissipate heat to the environment or dissipate heat to the environment through the box wall due to temperature differences. This solution can increase the thermal insulation performance of the box body 100 by installing a thermal insulation bottom guard plate 200, reduce the heat loss of the heat exchange plate 400 with a higher temperature, thereby increasing the energy consumption of the entire vehicle, and further improving the heating rate of the battery 300, thereby ensuring the performance of the battery 300 under low temperature conditions and improving the charging rate.

[0040] In a high temperature environment, when the battery 300 needs to be cooled, the side of the heat exchange plate 400 that is fed with coolant exchanges heat with the battery 300 to cool the battery 300; if there is no thermal insulation bottom guard plate 200, the other side of the heat exchange plate 400 that is fed with coolant will absorb heat from the environment, causing the coolant temperature to increase and reducing the cooling rate of the battery 300; this solution can increase the thermal insulation performance of the box 100 by installing a thermal insulation bottom guard plate 200, reduce the heat absorbed by the heat exchange plate 400 that is fed with coolant, thereby increasing the cooling rate of the battery 300, reducing the energy consumption of the whole vehicle, ensuring the performance of the battery 300 under high temperature conditions, and improving the charging rate. It can be seen that this solution can effectively solve the problem of the contradiction between heat dissipation and heat preservation of the two battery 300 systems: natural cooling of the battery 300 or integration of the heat exchange plate 400 in the box 100.

[0041] Optionally, thermal conductive adhesive is filled between the heat exchange plate 400 and the battery 300; it can be understood that adding thermal conductive adhesive between the battery 300 and the heat exchange plate 400 can increase the installation stability of the battery 300 and the heat exchange plate 400, can reduce the height of the battery box 100, effectively reduce the Z-axis height of the battery box 100, and increase the heat transfer rate between the battery 300 and the heat exchange plate 400, while increasing the ground clearance of the entire vehicle and improving the energy density.

[0042] Optionally, the battery 300 is snap-connected in the box body 100. It can be understood that the snap-connection method has a simple installation process and can improve the installation efficiency of the battery 300. Moreover, snap-connecting the battery 300 to the box body 100 can increase the stability of the installation of the battery 300, thereby avoiding the battery 300 being stably installed in the box body 100 after the thermal insulation bottom guard plate 200 is removed.

[0043] Furthermore, two groove walls arranged opposite to each other in the installation cavity are respectively provided with card slots, which extend along the length direction of the battery box, and are used to engage with the clamping ribs 310 on the opposite sides of the battery 300; such a card slot structure is simple, and the battery 300 can be engaged in the card slot by its own gravity, thereby preventing the battery 300 from being stably installed in the box body 100 after the thermal insulation bottom guard plate 200 is removed.

[0044] Optionally, the battery box also includes a temperature sensor and a prompt module, and the temperature sensor is electrically connected to the prompt module; it can be understood that the temperature sensor can detect the temperature, thereby transmitting information to the prompt module, thereby reminding the user to install or remove the thermal insulation bottom guard plate 200 in time.

[0045] Further, the temperature sensor includes a first temperature sensor, and the first temperature sensor is used to detect the temperature of the environment; and / or, the temperature sensor includes a second temperature sensor, and the second temperature sensor is used to detect the temperature of the battery 300.

[0046] For example, but not limited to, when the average temperature of the first temperature sensor is lower than 0°C for 5 consecutive days or the average temperature of the second temperature sensor is lower than -5°C for 5 consecutive days, the prompt module prompts the user that "it is recommended to install the thermal insulation bottom guard plate 200". The user can install the thermal insulation bottom guard plate 200 on the box body 100 to improve the thermal insulation performance of the air-cooled battery 300 and the heat loss to the outside when the battery box equipped with the heat exchange plate 400 is heated.

[0047] When the average temperature of the first temperature sensor is between 0°C and 10°C for 10 consecutive days or the average temperature of the second temperature sensor is between -5°C and 15°C for 5 consecutive days, the prompt module reminds the user to keep or remove the temperature bottom guard plate 200.

[0048] When the average temperature of the first temperature sensor is between 10℃ and 25℃ for 5 consecutive days or the average temperature of the second temperature sensor is between 15℃ and 30℃ for 5 consecutive days, the prompt module prompts the user that "it is recommended to remove the thermal insulation bottom guard plate 200". The user can remove the thermal insulation bottom guard plate 200 to improve the heat dissipation efficiency of the battery 300.

[0049] When the average temperature of the first temperature sensor exceeds 25°C for 5 consecutive days or the average temperature of the second temperature sensor exceeds 30°C for 5 consecutive days, depending on the configuration of the vehicle, for a vehicle with a battery box integrated with a heat exchange plate 400, the prompt module will prompt the user that "it is recommended to install a thermal insulation bottom guard plate 200"; for a naturally cooled battery box, that is, a battery box without a heat exchange plate 400, the prompt module will not prompt and the thermal insulation bottom guard plate 200 does not need to be installed.

[0050] Furthermore, the prompt module is configured as a car computer. It can be understood that the battery box uses the car computer background cloud big data to prompt the user through the car computer interface according to the ambient temperature and the recent battery 300 temperature, which can make the prompt more eye-catching.

[0051] The prompt module is configured as a mobile phone APP, which can facilitate users to remotely learn about the status of the battery box and to receive prompts in advance, so that users can install or remove the thermal insulation bottom guard plate 200 before using the vehicle, thereby avoiding affecting the use of the vehicle.

[0052] The utility model also proposes a car, which includes a battery box. The specific structure of the battery box refers to the above embodiment. Since the car adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0053] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery box, characterized in that: The battery box comprises: A box body, wherein the box body is provided with an installation cavity, wherein the installation cavity is used for installing a battery, and a heat exchange opening communicating with the installation cavity is provided at the bottom of the box body; and A thermal insulation bottom guard plate is detachably connected to the box body to cover or open the heat exchange opening.

2. The battery box according to claim 1, characterized in that: The thermal insulation bottom guard plate comprises a protective layer and a thermal insulation layer, wherein the thermal insulation layer is arranged on the side of the protective layer facing the box body.

3. The battery box according to claim 2, characterized in that: The protective layer and the thermal insulation layer are both provided with mounting holes, and screws pass through the mounting holes of the protective layer and the thermal insulation layer in sequence and are screwed into the box body to fasten the thermal insulation layer between the box body and the protective layer.

4. The battery box according to claim 1, characterized in that: The battery box also includes a heat exchange plate, which is arranged at the bottom of the box body, and two opposite side surfaces of the heat exchange plate are respectively in contact with the battery and the thermal insulation bottom protective plate.

5. The battery box according to claim 4, characterized in that: The space between the heat exchange plate and the battery is filled with heat conductive glue.

6. The battery box according to claim 1, characterized in that: The two groove walls of the installation cavity that are arranged opposite to each other are respectively provided with clamping grooves, and the clamping grooves extend along the length direction of the battery box. The clamping grooves are used to be clamped with the clamping ribs on the opposite sides of the battery.

7. The battery box according to any one of claims 1 to 6, characterized in that: The battery box also includes a temperature sensor and a prompt module, and the temperature sensor is electrically connected to the prompt module.

8. The battery box according to claim 7, characterized in that: The temperature sensor comprises a first temperature sensor, and the first temperature sensor is used to detect the temperature of the environment; and / or The temperature sensor includes a second temperature sensor, and the second temperature sensor is used to detect the temperature of the battery.

9. The battery box according to claim 7, characterized in that: The prompt module is configured as a vehicle computer and / or a mobile phone APP.

10. An automobile, characterized in that: Comprising a battery box as claimed in any one of claims 1 to 9.

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