Lead-acid battery of electric vehicle and electric vehicle

Abstract

The utility model belongs to the technical field of electric vehicles, and discloses a lead-acid battery of an electric vehicle and the electric vehicle, the lead-acid battery comprises a heating shell, a battery body, a heating piece and a detection piece, the heating shell is provided with a containing cavity with an open upper end, the battery body is installed in the containing cavity, and the heating piece is installed in the containing cavity; the heating part is arranged in the containing cavity and clamped between the inner side wall of the containing cavity and the outer side wall of the battery body, the heating part is electrically connected with the battery body, and the detection part is installed in the containing cavity and used for detecting the temperature of the battery body. The battery body of the lead-acid battery can be automatically heated in a low-temperature environment, so that the charge-discharge performance of the lead-acid battery at a low temperature is ensured, and the cruising ability of an electric vehicle is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric vehicle technical field especially relates to a lead acid battery and electric vehicle of electric vehicle. BACKGROUND

[0002] In cold winter, many users react that lead-acid battery use is not ideal, cannot charge and the problem such as the obvious reduction of mileage brings great trouble to the travel under low temperature environment, this is because low temperature environment can seriously affect the performance of battery body. The chemical reaction rate of battery body is affected by temperature. With the reduction of temperature, the viscosity of electrolyte of battery body increases, and the ion diffusion speed slows down, which leads to the increase of internal resistance of battery. This makes the available capacity and discharge performance of battery reduce, thereby leading to the reduction of endurance mileage. The pole grid of battery body under low temperature environment is easy to be corroded. This corrosion can lead to the deformation of pole plate and the increase of gap between pole plates, so that the electrolyte is more likely to be lost. This not only reduces the service life of battery, but also reduces its discharge performance and endurance capacity. With the reduction of temperature, the charging acceptance ability of battery body also decreases. This means that in the same charging time, the battery cannot be fully charged to the expected capacity, leading to the reduction of endurance capacity. The negative active material utilization rate is extremely low when the battery is discharged under low temperature. The negative lead plate is easy to become small size grain, and the small hole is easy to be frozen and blocked, thereby reducing the active material utilization rate. Therefore, in cold winter, many users can obviously feel that the electric vehicle installed with the battery body cannot ride far, and the battery cannot be charged. SUMMARY

[0003] The first purpose of the utility model is to provide a lead acid battery of electric vehicle, the battery body of the lead acid battery can be automatically heated under low temperature environment, and the charge-discharge performance of the lead acid battery under low temperature is ensured, thereby being favorable to guarantee the endurance capacity of electric vehicle.

[0004] The second purpose of the utility model is to provide an electric vehicle, the lead acid battery of the electric vehicle can be automatically heated under low temperature environment, and the charge-discharge performance of the lead acid battery under low temperature is ensured, thereby being favorable to guarantee the endurance capacity of electric vehicle.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] The utility model discloses a lead acid battery of electric vehicle, include: heating shell, the heating shell has the accommodating cavity of upper end open setting, battery body, the battery body is installed in the accommodating cavity, heating piece, the heating piece is installed in the accommodating cavity, and is clamped between the inboard wall of the accommodating cavity and the outboard wall of the battery body, the heating piece is electrically connected with the battery body, detection piece, the detection piece is installed in the accommodating cavity, and is used for detecting the temperature of the battery body.

[0007] In some embodiments, the heating member comprises a heating plate sandwiched between the bottom wall of the accommodating cavity and the bottom wall of the battery body; and connecting wires comprising positive and negative wires connected to the two ends of the heating plate along its length direction and connected to the positive and negative poles of the battery body respectively.

[0008] In some specific embodiments, the end of the positive wire away from the heating plate is provided with a positive fixing part connected to the positive pole; and the end of the negative wire away from the heating plate is provided with a negative fixing part connected to the negative pole.

[0009] In some more specific embodiments, the positive fixing part is a ring structure, and a positive connecting piece is connected to the positive pole through the positive fixing part.

[0010] The negative fixing part is a ring structure, and a negative connecting piece is connected to the negative pole through the negative fixing part.

[0011] In some specific embodiments, the two opposite side walls of the accommodating cavity are provided with wire grooves for accommodating the connecting wires.

[0012] In some specific embodiments, the heating plate is provided with a positioning hole, and the bottom wall of the accommodating cavity is provided with a positioning protrusion matched with the positioning hole.

[0013] In some embodiments, the side wall of the accommodating cavity is provided with a mounting groove for mounting the detecting member.

[0014] In some embodiments, the heating shell is an ABS material member.

[0015] In some embodiments, the bottom wall of the accommodating cavity is provided with at least one liquid discharge hole.

[0016] The utility model discloses still a kind of electric vehicle, including vehicle body and the lead-acid battery of preceding electric vehicle, the lead-acid battery of electric vehicle is installed in the vehicle body.

[0017] The electric vehicle's lead-acid battery has the beneficial effects that: in actual assembly, the detection piece is connected to the inner side wall of the heating shell first, then the heating piece is placed in the accommodating cavity, the heating piece is connected with the positive pole and the negative pole of the battery body after the battery body is placed into the heating shell, the detection piece is connected with the external detection equipment for real-time detection and display of the battery body temperature.

[0018] The electric vehicle has the beneficial effects that: due to the lead-acid battery described above, the battery body of the electric vehicle can be automatically heated in a low-temperature environment, the charging and discharging performance of the battery body in the low-temperature environment is ensured, and the cruising ability of the electric vehicle is thus beneficially ensured.

[0019] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the electric vehicle's lead-acid battery of the present application;

[0021] Figure 2 is an exploded structural schematic view of the electric vehicle's lead-acid battery of the present application;

[0022] Figure 3 is a structural schematic view of the heating shell of the present application;

[0023] Figure 4 is a structural schematic view of the heating piece of the present application.

[0024] REFERENCE NUMERALS:

[0025] 100, heating shell; 110, accommodating cavity; 120, wire groove; 130, mounting groove; 140, positioning protrusion;

[0026] 200, battery body; 210, positive pole; 220, negative pole;

[0027] 300, heating piece; 310, heating plate; 311, positioning hole; 320, connecting wire; 321, positive pole wire; 3211, positive pole fixing portion; 322, negative pole wire; 3221, negative pole fixing portion;

[0028] 400, detection piece;

[0029] 500, positive electrode connecting piece; 600, negative electrode connecting piece. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the utility model and not limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for convenience of description, not all the structures.

[0031] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0034] The utility model discloses a kind of lead-acid batteries of electric vehicle (for the convenience of description, hereinafter referred to as lead-acid battery), refer to Figure 1 And Figure 2As shown, the lead-acid battery of the electric vehicle comprises a heating shell 100, a battery body 200, a heating piece 300 and a detection piece 400, the heating shell 100 has a containing cavity 110 with an open upper end, the battery body 200 is installed in the containing cavity 110, the heating piece 300 is installed in the containing cavity 110 and is clamped between the inner side wall of the containing cavity 110 and the outer side wall of the battery body 200, the heating piece 300 is electrically connected with the battery body 200, and the detection piece 400 is installed in the containing cavity 110 and is used for detecting the temperature of the battery body 200. It can be understood that, in actual assembly, the detection piece 400 is first connected to the inner side wall of the heating shell 100, then the heating piece 300 is placed in the containing cavity 110, the battery body 200 is placed in the heating shell 100, the heating piece 300 is connected with the positive pole column 210 and the negative pole column 220 of the battery body 200, and the detection piece 400 is connected with external detection equipment and is used for real-time detection and display of the temperature of the battery body 200. In a low-temperature environment, the temperature of the battery body 200 is raised to a suitable working temperature by the heating piece 300, the charging efficiency and the charging capacity of the battery body 200 are improved, and the discharging capacity of the battery body 200 is improved, thereby prolonging the endurance of the electric vehicle. Meanwhile, the performance of the battery body 200 is avoided from being affected due to excessively low temperature, the damage to the lead-acid battery in a low-temperature environment is reduced, the service life of the lead-acid battery is prolonged, and the use experience of a user in a low-temperature environment is improved. In addition, the lead-acid battery disclosed by the utility model can be pre-assembled and sold externally, or the heating shell 100, the heating piece 300 and the detection piece 400 and the like structures can be added to an existing battery body 200, and the device has strong universality and does not need to be widely modified from the original equipment.

[0035] Optionally, the detection piece 400 is a temperature probe, the temperature probe has an accuracy of ±1%, the measured temperature ranges from-50℃ to 120℃, and various sizes and shapes can be customized.

[0036] In some embodiments, the heating piece 300 comprises a heating plate 310 and a connecting wire 320, the heating plate 310 is clamped between the bottom wall of the containing cavity 110 and the bottom wall of the battery body 200, the connecting wire 320 comprises a positive pole wire 321 and a negative pole wire 322, the positive pole wire 321 and the negative pole wire 322 are connected to the two ends of the heating plate 310 along the length direction of the heating plate 310 and are connected with the positive pole column 210 and the negative pole column 220 of the battery body 200 respectively. It can be understood that the power consumption of the heating piece 300 is not high, the heating piece 300 is directly powered by the battery body 200, the endurance of the battery body 200 is not greatly reduced while the battery body 200 is ensured to maintain a suitable temperature, instead, the endurance of the battery body 200 is improved because the battery body 200 always maintains a suitable temperature, thereby, a separate power supply does not need to be provided for the heating piece 300, and the structure of the lead-acid battery is simplified.

[0037] Optionally, the heating plate 310 is a graphene-covered insulating sheet structure, which has the characteristics of high heating efficiency, wear resistance, anti-piercing, anti-folding, long service life, etc. In addition, the heating plate 310 can support customizing any shape and has high flexibility.

[0038] In some specific embodiments, referring to Figure 4 As shown, the positive electrode fixing portion 3211 is arranged on the end of the positive electrode lead 321 away from the heating plate 310, and the positive electrode fixing portion 3211 is connected to the positive electrode column 210. The negative electrode fixing portion 3221 is arranged on the end of the negative electrode lead 322 away from the heating plate 310, and the negative electrode fixing portion 3221 is connected to the negative electrode column 220. It can be understood that the connection of the positive electrode lead 321 and the negative electrode lead 322 with the battery body 200 is realized through the positive electrode fixing portion 3211 and the negative electrode fixing portion 3221, which can ensure that the heating plate 310 is stably connected with the battery body 200, thereby ensuring that the heating plate 310 can stably heat the battery body 200 in the actual working process.

[0039] In some more specific embodiments, the positive electrode fixing portion 3211 is a ring structure, and the positive electrode connecting piece 500 passes through the positive electrode fixing portion 3211 to connect with the positive electrode column 210. It can be understood that in the actual installation process, after the battery body 200 is placed in the heating shell 100, the positive electrode fixing portion 3211 is arranged corresponding to the positive electrode column 210 of the battery body 200, and then the positive electrode connecting piece 500 is used to fix it, which can not only conveniently realize the connection of the positive electrode fixing portion 3211 with the battery body 200, but also ensure the connection stability of the positive electrode fixing portion 3211 with the battery body 200.

[0040] In some more specific embodiments, the negative electrode fixing portion 3221 is a ring structure, and the negative electrode connecting piece 600 passes through the negative electrode fixing portion 3221 to connect with the negative electrode column 220. It can be understood that in the actual installation process, after the battery body 200 is placed in the heating shell 100, the negative electrode fixing portion 3221 is arranged corresponding to the negative electrode column 220 of the battery body 200, and then the negative electrode connecting piece 600 is used to fix it, which can not only conveniently realize the connection of the negative electrode fixing portion 3221 with the battery body 200, but also ensure the connection stability of the negative electrode fixing portion 3221 with the battery body 200.

[0041] In some specific embodiments, referring to Figure 3As shown, the two oppositely arranged side walls of the accommodating cavity 110 are provided with wire grooves 120 for accommodating the connecting wires 320. It can be understood that the connecting wires 320 are installed in the wire grooves 120, which on one hand facilitates the installation of the connecting wires 320 and can play a role of bundling the wire harness, and on the other hand avoids the connecting wires 320 from being extruded by the battery body 200, which is beneficial to the protection of the connecting wires 320. Optionally, the connecting wires 320 can be directly bonded in the wire grooves 120, or can be fixed in the wire grooves 120 by a clamping structure such as a wire clamp.

[0042] In some specific embodiments, with reference to Figure 3 and Figure 4 As shown, the heating plate 310 is provided with a positioning hole 311, and the bottom wall of the accommodating cavity 110 is provided with a positioning protrusion 140 matched with the positioning hole 311. It can be understood that in the actual assembly process, the cooperation of the positioning hole 311 and the positioning protrusion 140 on one hand plays a role of positioning installation during the installation of the heating plate 310, and on the other hand ensures that the heating plate 310 will not shake in the accommodating cavity 110 after installation, ensuring the stability of the heating plate 310 in the accommodating cavity 110, thereby being beneficial to ensuring that the heating plate 310 can stably heat the battery body 200.

[0043] In some embodiments, with reference to Figure 3 As shown, the side wall of the accommodating cavity 110 is provided with a mounting groove 130 for mounting the detection member 400. It can be understood that the detection member 400 is installed in the mounting groove 130, which on one hand facilitates the installation of the detection member 400, and on the other hand avoids the detection member 400 from being extruded by the battery body 200, which is beneficial to the protection of the detection member 400. Optionally, the detection member 400 can be directly bonded in the mounting groove 130, or can be fixed in the mounting groove 130 by interference fit or connecting member or other ways.

[0044] In some embodiments, the heating shell 100 is ABS (Acrylonitrile Butadiene Styrene), and the heating shell 100 is a flame-retardant ABS material, which has high flame-retardant efficiency, can endow the composite material with good self-extinguishing property or flame retardancy, meets the flame-retardant requirements of lead-acid batteries, has good heat resistance, is not easy to bulge at high temperature after injection molding, has good impact resistance and does not crack under impact in a low-temperature environment, and does not contain harmful and toxic heavy metals such as cadmium and chromium, and will not cause any pollution to the environment during production and application. Of course, in other embodiments of the present application, the material of the heating shell 100 can also be selected according to actual needs, and is not limited to the foregoing description.

[0045] In some embodiments, the bottom wall of the accommodating cavity 110 is provided with at least one liquid drainage hole. Thus, the internal accumulated water can be conveniently drained in time, avoiding the phenomenon that the accumulated water in the heating shell 100 affects the normal work of the heating element 300.

[0046] The utility model discloses still a kind of electric vehicle, including vehicle body and the lead-acid battery of preceding text electric vehicle, the lead-acid battery of electric vehicle is installed in vehicle body. Since having the lead-acid battery described in preceding text, the electric vehicle can automatically heat battery body 200 in low temperature environment, ensure the charge-discharge performance of battery body 200 in low temperature, to facilitate guarantee the endurance capability of electric vehicle.

[0047] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Obviously, the above embodiments of the present utility model are only for clear illustration of the present utility model, and are not a limitation on the implementation manner of the present utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the present utility model. Here, it is unnecessary and impossible to enumerate all the implementation manners. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A lead-acid battery for an electric vehicle, characterized in that: include: A heating shell (100), wherein the heating shell (100) has a receiving cavity (110) with an open upper end; a battery body (200), the battery body (200) being installed in the accommodating cavity (110); a heating element (300), the heating element (300) being installed in the accommodating cavity (110) and sandwiched between the inner side wall of the accommodating cavity (110) and the outer side wall of the battery body (200), the heating element (300) being electrically connected to the battery body (200); A detection member (400) is installed in the accommodating cavity (110) and is used to detect the temperature of the battery body (200).

2. The lead-acid battery for an electric vehicle according to claim 1, characterized in that: The heating element (300) comprises: a heating plate (310), the heating plate (310) being sandwiched between the bottom wall of the accommodating cavity (110) and the bottom wall of the battery body (200); A connecting wire (320) includes a positive wire (321) and a negative wire (322). The positive wire (321) and the negative wire (322) are connected to both ends of the heating plate (310) along the length direction thereof, and are respectively connected to the positive electrode column (210) and the negative electrode column (220) of the battery body (200).

3. The lead-acid battery for an electric vehicle according to claim 2, wherein: A positive electrode fixing portion (3211) is provided on the end of the positive electrode wire (321) away from the heating plate (310), and the positive electrode fixing portion (3211) is connected to the positive electrode column (210); A negative electrode fixing portion (3221) is provided on the end of the negative electrode lead (322) away from the heating plate (310), and the negative electrode fixing portion (3221) is connected to the negative electrode column (220).

4. The lead-acid battery for an electric vehicle according to claim 3, characterized in that: The positive electrode fixing portion (3211) is a ring-shaped structure, and the positive electrode connector (500) passes through the positive electrode fixing portion (3211) and is connected to the positive electrode column (210); The negative electrode fixing portion (3221) is a ring-shaped structure, and the negative electrode connector (600) passes through the negative electrode fixing portion (3221) and is connected to the negative electrode column (220).

5. The lead-acid battery for an electric vehicle according to claim 2, characterized in that: Two oppositely disposed side walls of the accommodating cavity (110) are provided with a wire groove (120) for accommodating the connecting wire (320).

6. The lead-acid battery for an electric vehicle according to claim 2, characterized in that: A positioning hole (311) is provided on the heating plate (310), and a positioning protrusion (140) that cooperates with the positioning hole (311) is provided on the bottom wall of the accommodating cavity (110).

7. The lead-acid battery for an electric vehicle according to claim 1, characterized in that: A mounting groove (130) for mounting the detection element (400) is provided on the side wall of the accommodating cavity (110).

8. The lead-acid battery for an electric vehicle according to claim 1, characterized in that: The heating shell (100) is made of ABS material.

9. The lead-acid battery for an electric vehicle according to claim 1, wherein: At least one drainage hole is provided on the bottom wall of the accommodating cavity (110).

10. An electric vehicle, characterized in that: The electric vehicle comprises a vehicle body and a lead-acid battery according to any one of claims 1 to 9, wherein the lead-acid battery of the electric vehicle is installed on the vehicle body.

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