Protection device of automobile storage battery

Abstract

The utility model provides a protection device of an automobile storage battery, which comprises a box body, an accommodating cavity is arranged in the box body, a cooling part is arranged on the inner side surface of the accommodating cavity, the cooling part is sealed by a heat conducting plate, a battery assembly is arranged in the accommodating cavity, the battery assembly comprises a battery, a battery pack, a battery panel and a BMS module, a buffer supporting assembly is arranged on the outer side face of the battery assembly, the top of the buffer supporting assembly is fixedly connected with the lower surface of a fixing plate, the bottom of the buffer supporting assembly is fixedly connected with the upper surface of a buffer plate, a second buffer spring is arranged on the lower surface of the buffer plate, and the other end of the second buffer spring is fixedly connected with the bottom of the containing cavity. According to the utility model, the protection strength on the storage battery is greatly improved, the storage battery can be well buffered and protected even if an automobile is in a moving state or a state with an extremely complicated road surface, the position control degree is high, the mounting and the dismounting are convenient, and ventilation and heat dissipation can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile storage battery, specifically, relate to a protection device of automobile storage battery. BACKGROUND

[0002] The automobile storage battery mainly realizes the storage and release of electric energy based on the redox reaction. Taking the lead-acid storage battery as an example, during charging, the lead dioxide of the positive electrode and the lead of the negative electrode react with sulfuric acid respectively to generate lead sulfate and water, and at the same time, the electric energy is converted into chemical energy and stored up; during discharging, the lead sulfate is converted back to lead dioxide, lead and sulfuric acid, and the chemical energy is converted into electric energy to provide power for the electrical equipment and starting motor of the automobile. The storage battery has a certain open-circuit voltage and discharge voltage, the open-circuit voltage refers to the voltage of the storage battery when it is not connected to the load, and the discharge voltage refers to the voltage output after being connected to the load. The charging efficiency is also an important index, which reflects the ability to convert external electric energy into chemical energy of the storage battery.

[0003] The existing new energy automobile storage battery is often used as the core component of the automobile, and there are many deficiencies in the use process of the existing protection device of the storage battery. During the operation of the new energy automobile, the road bumps cause the storage battery to produce a large vibration, which can cause the storage battery screw to loosen or cause damage to the storage battery. In some hot weather, the heat dissipation of the storage battery is not good, which can affect the service life of the storage battery.

[0004] Therefore, it is urgent to replace the existing protection device of the storage battery with a new technology to solve the problems of how to make the storage battery produce a large vibration due to road bumps and how to dissipate heat of the storage battery. SUMMARY

[0005] In view of this, the utility model provides a protection device of automobile storage battery, which aims at solving the problems of how to make the storage battery produce a large vibration due to road bumps and how to dissipate heat of the storage battery.

[0006] In one aspect, the utility model provides a protection device of automobile storage battery, which comprises:

[0007] The box body is internally provided with a containing cavity, and the containing cavity is internally provided with a cooling part;

[0008] The battery assembly is placed in the containing cavity, and the battery assembly comprises a battery pack, which is internally used for placing an electric core module, and the electric core module is composed of a plurality of electric cores;

[0009] The buffer support assembly is respectively arranged on both sides of the battery assembly.

[0010] A heat dissipation push plate is arranged below the buffer support assembly, the upper surface of the heat dissipation push plate is fixedly connected with the bottom of the buffer support assembly, and the lower surface of the heat dissipation push plate is provided with a first buffer spring, and the other end of the first buffer spring is fixedly connected with the bottom of the accommodating cavity.

[0011] Further, the automobile storage battery protection device, the upper surface of the box body is provided with a fixed plate, the upper surface of the fixed plate is provided with a cover plate, and a fan assembly is arranged in the middle of the cover plate.

[0012] Further, the automobile storage battery protection device, the cover plate and the fan assembly include a fan head, the outer side of the fan head is provided with a fan blade, the top of the fan head is fixedly connected with a motor, and the other end of the motor is connected with the protection frame.

[0013] Further, the automobile storage battery protection device, the cooling part is sealed by a heat conducting plate.

[0014] Further, the automobile storage battery protection device, the upper surface of the battery module is provided with an electrode, the side of the battery pack is provided with a through hole, the upper surface of the battery pack is provided with a battery plate, the surface of the battery plate is provided with a motor limiting groove, and the battery pack and the battery plate are detachably connected.

[0015] Further, the automobile storage battery protection device, the buffer support assembly is fixedly connected with the fixed plate, the buffer support assembly includes a stabilizing column arranged vertically on the inner wall of the accommodating cavity and fixedly connected with the upper surface of the heat dissipation push plate, and a buffer block in sliding connection with the stabilizing column, the buffer block is two and arranged in an upper and lower interval on the stabilizing column.

[0016] The side of the buffer block facing the battery assembly is hingedly connected with a buffer rod, the end of the buffer rod away from the buffer block is rotatably connected with the outer side of the battery assembly, and a connecting block is further arranged between the end of the buffer rod away from the buffer block and the outer side of the battery assembly.

[0017] Further, the automobile storage battery protection device, the buffer support assembly further includes a buffer spring, the buffer spring is sleeved on the outer side of the buffer rod and located between the two buffer blocks, and the two ends of the buffer spring are fixedly connected with the corresponding buffer blocks.

[0018] Further, the automobile storage battery protection device, the outer side of the battery plate is provided with a protrusion for disassembling the battery plate.

[0019] Further, the automobile storage battery protection device, the battery module further includes a BMS module, the BMS module is fixed in the battery box and electrically connected with the battery pack.

[0020] Further, the automobile storage battery protection device, the cover plate and the box body are provided with an air outlet for discharging hot gas.

[0021] Compared with the prior art, the buffer support assembly of the storage battery can provide additional fixation and support to prevent the storage battery from moving in the vehicle compartment, and the random movement of the storage battery in the vehicle may damage itself and other components, cause short circuit or other faults, and the enhanced stability of installation helps to maintain the normal working state of the storage battery.

[0022] The heat dissipation protection device maintains the stability of the battery temperature through heat dissipation measures, can prevent the deformation and damage of the battery structure, maintains the normal spatial relationship between the components in the battery, and further prolongs the service life of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, the same reference numerals are used throughout the same figures. In the drawings:

[0024] Figure 1 A structural schematic view of the automobile storage battery protection device provided by the embodiment of the present application is shown in the figure.

[0025] Figure 2 A sectional view of the automobile storage battery protection device provided by the embodiment of the present application is shown in the figure.

[0026] Figure 3 A structural schematic view of the battery cell module provided by the embodiment of the present application is shown in the figure.

[0027] In the figure: 100 - box body; 110 - heat conducting plate; 120 - cooling part; 200 - cover plate; 300 - fan head; 310 - protection frame; 320 - electrode limiting groove; 330 - fan blade; 340 - motor; 400 - buffer support assembly; 410 - connecting block; 420 - second buffer spring; 430 - buffer rod; 440 - buffer block; 450 - stabilizing column; 500 - heat dissipation push plate; 510 - first buffer spring; 600 - battery pack; 610 - battery cell module; 620 - battery plate; 630 - BMS module; 640 - electrode; 650 - through hole; 660 - battery assembly. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0029] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0031] In the description of the present application, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Referring to Figure 1 , Figure 2 and Figure 3 The utility model provides a kind of protection device of automobile storage battery, comprising:

[0033] Box body 100, its inside is equipped with containing cavity, containing cavity inner side is equipped with cooling part 120;

[0034] Battery assembly 660, it is placed in containing cavity inside, battery assembly 660 includes battery pack 600, its inside is used to place electric core module 610, electric core module 610 is arranged by several electric core;

[0035] Buffer support assembly 400 is respectively arranged at the both sides of battery assembly 660;

[0036] Radiating push plate 500, it is set below buffer support assembly 400, the upper surface of radiating push plate 500 and the bottom of buffer support assembly 400 are fixedly connected, the lower surface of radiating push plate 500 is equipped with first buffer spring 510, and the other end of first buffer spring 510 is fixedly connected with the bottom of containing cavity.

[0037] Specifically, the automobile storage battery is connected to the electrical system of the automobile through wires, joints and other components. Vibration can cause these connecting components to loosen, and the connecting nuts on the battery posts can gradually loosen due to long-term vibration, resulting in poor contact. Poor contact can increase the resistance at the connection point, generating excessive heat during charging or discharging, further damaging the connecting components and the battery. The cushion support assembly 400 can reduce the vibration impact on the connecting components, reduce the possibility of loosening, prolong the service life of the connecting components, and ensure good connection between the storage battery and the electrical system.

[0038] Specifically, for high-performance batteries such as lithium-ion batteries, thermal runaway is a very serious safety hazard. When the internal temperature of the battery is too high, a series of chain reactions can occur, the electrolyte inside the battery can decompose, generating a large amount of gas, causing the internal pressure of the battery to rise, and the reaction activity of the positive and negative materials will also increase with the temperature, further releasing heat. If not timely heat dissipation, this vicious cycle can cause the battery to catch fire or even explode. Effective heat dissipation can monitor and control the temperature of the battery, prevent thermal runaway, and protect the safety of users' lives and property.

[0039] Specifically, the protection device for the automobile storage battery, the upper surface of the box body 100 is provided with a fixed plate, the upper surface of the fixed plate is provided with a cover plate 200, and the middle part is provided with a fan assembly. The fan assembly is used for heat dissipation of the battery assembly 660.

[0040] Specifically, the protection device for the automobile storage battery, the fan assembly of the cover plate 200 includes a fan head 300, the outer side of the fan head 300 is provided with a fan blade 330, the top of the fan head 300 is fixedly connected with a motor 340, and the other end of the motor 340 is connected with a protection frame 310.

[0041] It can be understood that the fan heat dissipation helps to keep the temperature of the equipment within a reasonable working interval. The automobile storage battery is prone to overheating in a long-time driving environment. The fan can introduce cooler air around the battery and carry away the heat generated by the battery through forced convection. The optimal working temperature of the lead-acid battery is between 25-40℃. Fan heat dissipation can effectively prevent the battery from overheating and maintain it within this suitable temperature range, ensuring the normal charging and discharging performance of the battery.

[0042] Specifically, the protection device for the automobile storage battery, the cooling part 120 is sealed with a heat conducting plate 110.

[0043] Specifically, the cooling part 120 is used to place the cooling liquid, and the cooling gas generated by the cooling liquid can be transmitted to the containing cavity through the heat conducting plate 110 to cool the battery assembly 660.

[0044] Specifically, the protection device for the automobile storage battery, the electrode module 610 is provided with electrodes on the upper surface, the battery pack 600 is provided with a through hole 650 on the side surface, the battery pack 600 is provided with a battery plate 620 on the upper surface, the surface of the battery plate 620 is provided with an electrode limiting groove 320, and the battery pack 600 is detachably connected with the battery plate 620.

[0045] Specifically, the battery plate 620 is hinged with the battery pack 600, the electrode limiting groove 320 is used for connecting with the electrode of the battery cell, and the battery plate 620 is arranged above the battery pack 600 to protect the battery pack 600.

[0046] Specifically, the protection device for the automobile storage battery, the buffer support assembly 400 is fixedly connected with the fixing plate, the buffer support assembly 400 comprises a stabilizing column 450 vertically arranged on the inner wall of the accommodating cavity and fixedly connected with the upper surface of the heat dissipation push plate 500, and a buffer block 440 in sliding connection with the stabilizing column 450, the buffer block 440 is two and arranged on the stabilizing column 450 in an upper and lower spaced manner.

[0047] The side of the buffer block 440 facing the battery assembly 660 is hinged with a buffer rod 430, the end of the buffer rod 430 away from the buffer block 440 is rotatably connected with the outer side surface of the battery assembly 660, and a connecting block 410 is further arranged between the end of the buffer rod 430 away from the buffer block 440 and the outer side surface of the battery assembly 660, and the buffer rod 430 is rotatably connected with the connecting block 410.

[0048] Specifically, the protection device for the automobile storage battery, the buffer support assembly 400 further comprises a second buffer spring 420, the second buffer spring 420 is sleeved on the outer side surface of the buffer rod 430 and located between the two buffer blocks 440, and the two ends of the buffer spring are fixedly connected with the corresponding buffer blocks 440 respectively.

[0049] It can be understood that various vibrations will be generated during the driving of the automobile, and if these vibrations are directly transmitted to the inside of the storage battery, the active material of the electrode plate may be detached, for example, the electrode plate of the lead-acid storage battery is composed of active material attached to the grid, and strong vibration may cause the active material to fall off from the grid, reducing the effective reaction area of the electrode plate, thereby reducing the performance of the storage battery. The buffer support assembly 400 with the shock absorption function can absorb and buffer these vibrations, so that the internal structure of the storage battery remains intact, and the normal charging and discharging function is ensured.

[0050] Specifically, the protection device for the automobile storage battery, the outer side surface of the battery plate 620 is provided with a protrusion for disassembling the battery plate 620.

[0051] Specifically, the protection device for the automobile storage battery, the battery module further comprises a BMS module 630, the BMS module 630 is fixed in the battery box and electrically connected with the battery pack.

[0052] It can be understood that the BMS module 630 will be arranged at the key position of the battery pack temperature sensor, real-time acquisition of battery temperature information. If the battery temperature is too high, it may cause battery thermal runaway, especially for lithium batteries, which is a very dangerous situation. The BMS 630 module can take measures such as starting the cooling system or reducing the charging / discharging current after detecting high temperature to ensure that the battery works in the appropriate temperature range. Generally, the appropriate working temperature of lithium battery is between 15-35℃.

[0053] Specifically, the automobile storage battery protection device is provided with an air outlet between the cover plate 200 and the box body 100, which is used for discharging hot gas.

[0054] Those skilled in the art can understand that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A protection device for an automotive storage battery, characterized by comprising: Include: Box, inside opening has a containing cavity, the containing cavity inside face opening has a cooling part; Battery assembly, placed in the containing cavity, the battery assembly includes a battery pack, the inside for placing the battery cell module, the battery cell module is composed of a plurality of battery cells arranged; Buffer support assembly, respectively arranged on both sides of the battery assembly; Heat dissipation push plate, arranged below the buffer support assembly, the upper surface of the heat dissipation push plate is fixedly connected with the bottom of the buffer support assembly, and the lower surface of the heat dissipation push plate is provided with a first buffer spring, the other end of the first buffer spring is fixedly connected with the bottom of the containing cavity.

2. The protection device for an automotive storage battery according to claim 1, characterized by The upper surface of the box is provided with a fixed plate, the upper surface of the fixed plate is provided with a cover plate, the middle part of the cover plate is provided with a fan assembly, and the fan assembly is used for heat dissipation of the battery assembly.

3. The protection device for automotive storage batteries as defined in claim 2, characterized in that The fan assembly of the cover plate includes a fan head, the outer side of the fan head is provided with a fan blade, the top of the fan head is fixedly connected with a motor, and the other end of the motor is connected with a protection frame.

4. The protection device for an automotive storage battery according to claim 1, characterized by The cooling part is sealed by a heat conducting plate.

5. The protection device for an automotive storage battery according to claim 1, characterized by The upper surface of the battery cell module is provided with an electrode, the side surface of the battery pack is provided with a through hole, the upper surface of the battery pack is provided with a battery plate, the surface of the battery plate is provided with an electrode limiting groove, and the battery pack and the battery plate are detachably connected.

6. The automobile storage battery protection device according to claim 1, wherein The buffer support assembly is fixedly connected with the fixed plate, the buffer support assembly includes a stabilizing column vertically arranged on the inner wall of the containing cavity and fixedly connected with the upper surface of the heat dissipation push plate, and a buffer block in sliding connection with the stabilizing column, the buffer block is two, and is arranged on the stabilizing column in an upper and lower interval; The side of the buffer block towards the battery assembly is hingedly connected with a buffer rod, the end of the buffer rod away from the buffer block is rotatably connected with the outer side surface of the battery assembly, and a connecting block is further arranged between the end of the buffer rod away from the buffer block and the outer side surface of the battery assembly, and the buffer rod and the connecting block are rotatably connected.

7. The protection device for automotive storage batteries as defined in claim 6, characterized in that The buffer support assembly further includes a second buffer spring, the second buffer spring is sleeved on the outer side surface of the buffer rod and located between the two buffer blocks, and the two ends of the buffer spring are fixedly connected with the corresponding buffer blocks.

8. The protection device for an automotive storage battery according to claim 5, characterized in that, The outer side surface of the battery plate is provided with a protrusion for disassembling the battery plate.

9. The protection device for an automotive storage battery according to claim 1, characterized in that, The battery module further includes a BMS module, the BMS module is fixed in the battery box and electrically connected with the battery pack.

10. The protection device for an automotive storage battery according to claim 2, characterized in that, An air outlet is arranged between the cover plate and the box for discharging hot gas.

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