A low-temperature resistant lead-acid battery

Abstract

The present invention relates to the field of lead-acid batteries, and specifically discloses a low-temperature resistant lead-acid battery, comprising: a shock-absorbing seat; an outer protective shell assembly connected to the shock-absorbing seat; an inner protective shell assembly connected to the outer protective shell assembly; a replaceable battery assembly inserted and movably connected inside the inner protective shell assembly; a thermal control device connected to the outer protective shell assembly; a multi-point fastening device connected to the thermal control device; wherein, the thermal control device includes: a heat storage component connected to the outer protective shell assembly; a pressure control component connected to the inner protective shell assembly. This battery is provided with a thermal control device, which can effectively store and utilize waste heat. In a low-temperature environment, the released stored heat is used to change the local battery temperature environment, improve the performance of the battery in a low-temperature environment, and at the same time expand the application range of the lead-acid battery.

Description

Technical Field

[0001] The present invention relates to the lead-acid battery industry, and specifically to a low-temperature resistant lead-acid battery. Background Art

[0002] Due to its advantages such as low cost, easy availability of materials, mature technology, and high reliability, lead-acid batteries occupy an important position in the chemical battery market. However, with the progress of technology and the continuous expansion of application fields, the performance of traditional lead-acid batteries in low-temperature environments has become a bottleneck in their development, especially in extremely cold regions or situations where quick startup is required.

[0003] In automotive, motorcycle starting batteries, and some energy storage systems, higher requirements are placed on the low-temperature performance of the battery. Traditional lead-acid batteries are difficult to maintain stable performance in low-temperature environments. To address the above problems, it is urgent to develop a low-temperature resistant lead-acid battery. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-temperature resistant lead-acid battery to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A low-temperature resistant lead-acid battery, comprising:

[0007] A shock-absorbing seat;

[0008] An outer protective shell assembly, which is connected to the shock-absorbing seat;

[0009] An inner protective shell assembly, which is connected to the outer protective shell assembly;

[0010] A replaceable battery assembly, which is inserted and movably connected inside the inner protective shell assembly;

[0011] A thermal control device, which is connected to the outer protective shell assembly;

[0012] A multi-point fastening device, which is connected to the thermal control device and is used for limiting and fixing the replaceable battery assembly;

[0013] Among them, the thermal control device includes:

[0014] A heat storage component, which is connected to the outer protective shell assembly and is used for collecting waste heat;

[0015] A pressure control component, which is connected to the inner protective shell assembly and is used for controlling the heat release of the heat storage component.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The battery is provided with a thermal control device, which can effectively store and utilize waste heat. In a low-temperature environment, the released stored heat is used to change the local battery temperature environment, improving the battery's performance in low-temperature environments. At the same time, by changing the configuration ratio of the additive of the negative active material of the battery, the scope of use of the lead-acid battery is improved under the dual action. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is an internal perspective structure schematic diagram of a low-temperature resistant lead-acid battery in an embodiment of the present invention.

[0018] Figure 2 FIG. is an internal structure schematic diagram of a low-temperature resistant lead-acid battery in an embodiment of the present invention.

[0019] Figure 3 FIG. is a side partial perspective schematic diagram of a low-temperature resistant lead-acid battery in an embodiment of the present invention.

[0020] Figure 4 FIG. is a structure schematic diagram of a replaceable battery assembly in a low-temperature resistant lead-acid battery in an embodiment of the present invention.

[0021] Figure 5 is Figure 1 a partial structure schematic diagram of part A in

[0022] Figure 6 FIG. is a front view connection schematic diagram of a partition bin and a grid plate in a low-temperature resistant lead-acid battery in an embodiment of the present invention.

[0023] Figure 7 FIG. is a structure schematic diagram of a multi-point fastening device in a low-temperature resistant lead-acid battery in an embodiment of the present invention.

[0024] In the figure: 1 - shock-absorbing seat, 2 - outer protective shell assembly, 3 - inner protective shell assembly, 4 - replaceable battery assembly, 5 - thermal control device, 6 - heat storage assembly, 7 - pressure control assembly, 8 - multi-point fastening device, 201 - outer protective shell, 202 - bottom bin, 203 - air blowing member, 204 - air inlet, 205 - first control member, 301 - inner protective shell, 302 - negative pressure member, 303 - first limiting groove, 304 - second limiting groove, 401 - battery pack, 402 - heat discharge port, 403 - first elastic member, 404 - positioning block, 405 - positive electrode plate, 406 - negative electrode plate, 407 - inclined plane frame, 601 - partition bin, 602 - heat storage material member, 701 - second control member, 702 - pressurizing chamber, 703 - second elastic member, 704 - piston telescopic frame, 705 - grid plate, 801 - fixing frame, 802 - limiting frame, 803 - driving member, 804 - pressing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] A low-temperature resistant lead-acid battery. In one embodiment of the present invention, as Figures 1 to 3 shown, it includes: a shock-absorbing seat 1; an outer protective shell assembly 2, which is connected to the shock-absorbing seat 1; an inner protective shell assembly 3, which is connected to the outer protective shell assembly 2; a replaceable battery assembly 4, which is inserted and movably connected to the inside of the inner protective shell assembly 3; a thermal control device 5, which is connected to the outer protective shell assembly 2; a multi-point fastening device 8, which is connected to the thermal control device 5 and is used for limiting and fixing the replaceable battery assembly 4; wherein, the thermal control device 5 includes: a heat storage assembly 6, which is connected to the outer protective shell assembly 2 and is used for collecting waste heat; a pressure control assembly 7, which is connected to the inner protective shell assembly 3 and is used for controlling the heat release of the heat storage assembly 6.

[0027] In one embodiment of the present invention:

[0028] As Figures 1 to 3 shown, the outer protective shell assembly 2 includes: an outer protective shell 201, which is connected to the shock-absorbing seat 1; a plurality of air inlets 204, which are arranged on the bottom side of the outer protective shell 201; a blower member 203, which is connected to the inner bottom side of the outer protective shell 201 and is communicated with the plurality of air inlets 204; the blower member 203 is selected as a blower; a bottom bin 202, which is fixedly connected to the inner bottom side of the outer protective shell 201 and is communicated with the side of the blower member 203 away from the air inlets 204; a plurality of first control members 205, which are connected to the side of the bottom bin 202 away from the blower member 203; the first control member 205 is selected as an electromagnetic valve.

[0029] The top side of the outer protective shell 201 is open, and a cover plate (not shown in the figure) is provided on the top side of the outer protective shell 201, and through holes (not shown in the figure) are provided on the cover plate. When the blower member 203 operates, external gas can be introduced into the inside of the bottom bin 202 through the plurality of air inlets 204, and when the plurality of first control members 205 are opened, the gas can be introduced into the inside of the outer protective shell 201 through the plurality of first control members 205 to assist the battery in dissipating heat and exhausting heat, and the heat dissipation gas can be discharged through the through holes in the top cover plate. The bottom bin 202 and the blower member 203 are both arranged inside the outer protective shell 201.Figure 3 The positions of the bottom bin 202 and the air blowing component 203 shown are perspective images, facilitating the showing and understanding of the internal structural relationship of the outer protective shell 201.

[0030] In an embodiment of the present invention:

[0031] As Figure 1 and Figure 2 shown, the inner protective shell assembly 3 includes: an inner protective shell 301, the inner protective shell 301 is connected to the side of the bottom bin 202 away from the air blowing component 203; several negative pressure components 302, several negative pressure components 302 are connected to the inner protective shell 301 in communication; the negative pressure component 302 is selected as a negative pressure fan; several first limiting grooves 303, several first limiting grooves 303 are arranged on the bottom side of the inner protective shell 301; several second limiting grooves 304, several second limiting grooves 304 are arranged on the bottom side of the inner protective shell 301, used to cooperate with several first limiting grooves 303 to complete the bottom limit of the replaceable battery assembly 4.

[0032] The top side of the inner protective shell 301 is open. The outer protective shell 201 and the inner protective shell 301 can achieve double protection for the replaceable battery assembly 4. According to the positions of several first limiting grooves 303 and several second limiting grooves 304 on the bottom side of the inner protective shell 301, the replaceable battery assembly 4 is inserted into the inner protective shell 301. The bottom of the replaceable battery assembly 4 is correspondingly inserted into several first limiting grooves 303 and several second limiting grooves 304 to complete the bottom limit of the replaceable battery assembly 4. Then, the multi-point fastening device 8 operates to complete the top limit of the replaceable battery assembly 4.

[0033] In an embodiment of the present invention:

[0034] As Figures 1 to 5 shown, the replaceable battery assembly 4 includes: a battery pack 401, the battery pack 401 is inserted and movably connected to the inner protective shell 301; several heat exhaust ports 402, several heat exhaust ports 402 are arranged on the outer side of the battery pack 401; several first elastic members 403, several first elastic members 403 are connected to the bottom side of the battery pack 401; the first elastic member 403 is selected as an elastic telescopic plate; several positioning blocks 404, several positioning blocks 404 are connected to the bottom side of the battery pack 401; several positive plates 405, several positive plates 405 are installed inside the battery pack 401; several negative plates 406, several negative plates 406 are installed inside the battery pack 401; several inclined plane frames 407, the inclined plane frame 407 is connected to the top side of the battery pack 401.

[0035] The shape of the connection part between the first elastic member 403 and the bottom side of the battery pack 401 is the same as that of the first limiting groove 303. The depth of the first limiting groove 303 is slightly greater than the height of the connection part between the first elastic member 403 and the bottom side of the battery pack 401. After the battery pack 401 is placed inside the inner protective shell 301, a plurality of heat exhaust ports 402 correspond to the positions of a plurality of negative pressure members 302 arranged on the outer side of the inner protective shell 301. The first elastic member 403 is embedded in the first limiting groove 303 at the corresponding position. At this time, the first elastic member 403 is not fully contracted, and the positioning block 404 is at the top of the second limiting groove 304 at the corresponding position. At this time, the positioning block 404 is not embedded inside the second limiting groove 304. When the multi-point fastening device 8 operates and drives the battery pack 401 to move down a certain distance, the first elastic member 403 is fully contracted, and the positioning block 404 at the corresponding position is embedded inside the second limiting groove 304, completing the double limiting and fixing of the battery pack 401;

[0036] Inside the heat exhaust ports 402 on the outer side of the battery pack 401, heat exhaust blowers (not shown in the figure) are provided, which can direct the heat generated during the operation of the battery pack 401 out through the heat exhaust ports 402. At the same time, when the negative pressure members 302 on the outer side of the inner protective shell 301 operate, the heat discharged from the heat exhaust ports 402 can be directed to one side of the heat storage component 6.

[0037] In an embodiment of the present invention:

[0038] Such as Figure 1 And Figure 6 As shown, the heat storage component 6 includes: a plurality of compartments 601, and the plurality of compartments 601 are connected to the outer protective shell 201; a heat storage material member 602, and the heat storage material member 602 is arranged inside the compartment 601; the heat storage material member 602 is selected as a phase change heat storage material;

[0039] The phase change heat storage material is a type of material that can store and release energy through the phase change process of a substance (from solid to liquid or from liquid to solid), and can be used to store the waste heat generated during the production process and release it for reuse when needed. Under the conventional temperature environment, when the battery pack 401 operates, the heat discharged from a plurality of heat exhaust ports 402 of the battery pack 401 can be blown by the negative pressure member 302 to the heat storage material member 602 at the corresponding position, and the heat storage material member 602 changes from solid to liquid, and the heat storage material member 602 absorbs and stores the heat.

[0040] In an embodiment of the present invention:

[0041] Such as Figure 1 And Figure 5As shown, the pressure control component 7 includes: a second control member 701, which is connected to the bottom bin 202; the second control member 701 is selected as an electromagnetic communication pipe; a pressurization bin 702, which is connected to the inner protective shell 301 and is connected to one end of the second control member 701 away from the bottom bin 202; a second elastic member 703, which is connected to the inside of the pressurization bin 702; the second elastic member 703 is selected as an elastic telescopic rod; a piston telescopic frame 704, which is movably connected through the pressurization bin 702 and is connected to the second elastic member 703; a grid plate 705, which is connected to one end of the piston telescopic frame 704 away from the second elastic member 703;

[0042] When in a low-temperature environment, several first control members 205 are closed, and several second control members 701 and the blowing member 203 open and close for a certain period of time. When several second control members 701 open and close for a certain period of time, part of the blowing gas enters the inside of the pressurization bin 702, which can drive the piston telescopic frame 704 to extend, and then drive the grid plate 705 to move toward the side close to the heat storage material member 602. There is a protruding part (not shown in the figure) on the side of the grid plate 705 close to the heat storage material member 602. When the protruding part of the grid plate 705 is pressed into the heat storage material member 602 by a certain distance, a certain pressure is given to the inside of the heat storage material member 602, and several heat storage material members 602 undergo an inverse phase change, changing from a liquid state to a solid state, and releasing the stored heat energy, so that the temperature between the outer protective shell 201 and the inner protective shell 301 rises, thereby reducing the influence of low temperature on the battery pack 401;

[0043] When heat storage is not required, the blowing member 203, the first control member 205, and the negative pressure member 302 are turned on, and the second control member 701 is turned off. An upward wind force is formed between the outer protective shell 201 and the inner protective shell 301, and the heat dissipation gas is blown upward and discharged through the through holes in the top cover plate of the outer protective shell 201 to achieve the purpose of auxiliary heat dissipation; when heat storage is required, the blowing member 203, the second control member 701, and the negative pressure member 302 are turned on, and the first control member 205 is turned off. The heat dissipation gas is driven by the negative pressure member 302 and all passes through the grid plate 705 and blows toward the corresponding heat storage material member 602 to achieve heat storage collection through the heat storage material member 602.

[0044] In an embodiment of the present invention:

[0045] Such as Figure 1 And Figure 7As shown, the multi-point fastening device 8 includes: a fixing frame 801, which is connected to the partition bin 601; a limiting frame 802, one side of the limiting frame 802 is connected to the end of the fixing frame 801 away from the partition bin 601, and the other side is fixedly connected to the outer side of the inner protective shell 301; a driving member 803, which is connected to the top side of the limiting frame 802; the driving member 803 is selected as an electric shaft seat; a pressing plate 804, which is connected to the side of the driving member 803 away from the limiting frame 802;

[0046] The limiting frame 802 is arranged in an "L" shape, which can further improve the fixing stability of the inner protective shell 301. Before placing the battery pack 401, the positional relationship between the pressing plate 804 and the limiting frame 802 is as Figure 7 shown. After the battery pack 401 is placed inside the inner protective shell 301, several driving members 803 operate to drive the pressing plate 804 to rotate. Several pressing plates 804 rotate to the Figure 1 position shown, abut against the inclined plane frame 407, and then drive the battery pack 401 to move down a certain distance;

[0047] In this application, the driving member 803 is not limited to an electric shaft seat. It can also adopt a linear motor, an electric cylinder or a cylinder drive, etc., as long as it can realize the rotational adjustment of the pressing plate 804, and no specific limitation is made here.

[0048] In an embodiment of the present invention:

[0049] The negative electrode plate 406 includes a negative electrode active material, which is composed of the following components in a weight ratio: lead powder: 1000 kg, as the base material; lignin: 2 kg; humic acid: 5 kg; high surface area barium sulfate: 6 kg, used to enhance conductivity and structural stability; acetylene black: 2 kg, as a high-conductivity additive; super conductive carbon black: 2.5 kg, as a high-conductivity additive; PBX51 Cabot carbon black: 1 kg, as a high-conductivity additive; graphene: 0.2 kg, as a high-conductivity additive; fiber: 0.75 kg, used to improve structural strength and dispersibility; dilute sulfuric acid with a specific gravity of 1.26: 100 kg, as a solvent and electrolyte precursor; pure water: 95 kg, as a solvent;

[0050] The above components are mixed and processed to form the negative electrode active material, which combines with other components of the battery to form the battery negative electrode plate.

[0051] The working principle of the present invention is as follows: The top side of the outer protective shell 201 is open, and a cover plate (not shown in the figure) is provided on the top side of the outer protective shell 201. Through holes (not shown in the figure) are provided on the cover plate. When the air blowing member 203 operates, external gas can be introduced into the inner part of the bottom bin 202 through a plurality of air inlets 204. And when a plurality of first control members 205 are opened, the gas can be introduced into the inner part of the outer protective shell 201 through the plurality of first control members 205 to assist in the heat dissipation and heat exhaust of the battery. The heat dissipation gas can be discharged through the through holes in the top cover plate. The bottom bin 202 and the air blowing member 203 are both arranged inside the outer protective shell 201. Figure 3 The positions of the shown bottom bin 202 and the air blowing member 203 are perspective images, which are convenient for showing and understanding the internal structural relationship of the outer protective shell 201. The top side of the inner protective shell 301 is open. The outer protective shell 201 and the inner protective shell 301 can achieve double protection for the replaceable battery assembly 4. According to the positions of a plurality of first limiting grooves 303 and a plurality of second limiting grooves 304 on the bottom side of the inner protective shell 301, the replaceable battery assembly 4 is inserted into the inner part of the inner protective shell 301. The bottom of the replaceable battery assembly 4 is correspondingly inserted into the plurality of first limiting grooves 303 and the plurality of second limiting grooves 304 to complete the bottom limiting of the replaceable battery assembly 4. Then, the multi-point fastening device 8 operates to complete the top limiting of the replaceable battery assembly 4. The connecting part between the first elastic member 403 and the bottom side of the battery pack 401 has the same shape as the first limiting groove 303. The depth of the first limiting groove 303 is slightly greater than the height of the connecting part between the first elastic member 403 and the bottom side of the battery pack 401. When the battery pack 401 is placed inside the inner protective shell 301, a plurality of heat exhaust ports 402 on the battery pack 401 are in corresponding positions with a plurality of negative pressure members 302 arranged outside the inner protective shell 301. The first elastic member 403 is embedded in the corresponding first limiting groove 303. At this time, the first elastic member 403 is not completely contracted, and the positioning block 404 is at the top of the corresponding second limiting groove 304. At this time, the positioning block 404 is not embedded inside the second limiting groove 304. When the multi-point fastening device 8 operates and drives the battery pack 401 to move down a certain distance, the first elastic member 403 is completely contracted, and the positioning block 404 at the corresponding position is embedded inside the second limiting groove 304 to complete the double limiting and fixing of the battery pack 401. Heat exhaust blowers (not shown in the figure) are arranged inside the heat exhaust ports 402 on the outer side of the battery pack 401, which can direct the heat generated during the operation of the battery pack 401 out through the heat exhaust ports 402. At the same time, when the negative pressure members 302 outside the inner protective shell 301 operate, the heat discharged from the heat exhaust ports 402 can be directed and discharged to one side of the heat storage assembly 6.

[0052] Phase change heat storage materials are a type of materials that can store and release energy through the phase change process of substances (from solid to liquid or from liquid to solid). They can be used to store the waste heat generated during the production process and release it for reuse when needed. Under normal temperature conditions, when the battery pack 401 is operating, the heat discharged from several heat dissipation ports 402 of the battery pack 401 can be blown by the negative pressure member 302 to the heat storage material member 602 at the corresponding position. The heat storage material member 602 changes from solid to liquid, absorbs and stores the heat. When in a low-temperature environment, several first control members 205 are closed, and several second control members 701 and the air blowing member 203 open and close for a certain period of time. When several second control members 701 open and close for a certain period of time, part of the blowing gas enters the inside of the pressurization chamber 702, which can drive the piston telescopic frame 704 to extend, and then drive the grid plate 705 to move towards the side close to the heat storage material member 602. A protruding part (not shown in the figure) is provided on the side of the grid plate 705 close to the heat storage material member 602. When the protruding part of the grid plate 705 is pressed into the heat storage material member 602 by a certain distance, a certain pressure is given to the inside of the heat storage material member 602, and several heat storage material members 602 undergo an inverse phase change, changing from liquid to solid, and releasing the stored thermal energy. The temperature between the outer protective shell 201 and the inner protective shell 301 rises, thereby reducing the impact of low temperature on the battery pack 401. When heat storage is not required, the air blowing member 203, the first control member 205, and the negative pressure member 302 are turned on, and the second control member 701 is turned off. An upward wind force is formed between the outer protective shell 201 and the inner protective shell 301, and the heat dissipation gas is blown upward and discharged through the through holes in the top cover plate of the outer protective shell 201 to achieve the purpose of auxiliary heat dissipation; when heat storage is required, the air blowing member 203, the second control member 701, and the negative pressure member 302 are turned on, and the first control member 205 is turned off. The heat dissipation gas is driven by the negative pressure member 302 and all passes through the grid plate 705 and is blown to the heat storage material member 602 on the corresponding side to achieve heat storage collection through the heat storage material member 602. The limiting frame 802 is arranged in an "L" shape, which can further improve the fixing stability of the inner protective shell 301. Before placing the battery pack 401, the positional relationship between the pressing plate 804 and the limiting frame 802 is as Figure 7 shown. After the battery pack 401 is placed inside the inner protective shell 301, several driving members 803 operate to drive the pressing plate 804 to rotate. Several pressing plates 804 rotate to the Figure 1 shown position and abut against the inclined plane frame 407, thereby driving the battery pack 401 to move downward by a certain distance. The driving member 803 is not limited to an electric shaft seat. It can also be driven by a linear motor, an electric cylinder, or a cylinder, etc., as long as it can achieve the rotational adjustment of the pressing plate 804. No specific limitation is made here.

[0053] In summary, the battery is provided with a thermal control device 5, which can effectively store and utilize the waste heat. In a low-temperature environment, the stored heat released is used to change the local battery temperature environment, improving the battery's performance in a low-temperature environment. At the same time, by changing the configuration ratio of the additive of the negative electrode active material of the battery, under the dual effects, the application range of the lead-acid battery is further improved.

[0054] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-temperature resistant lead-acid battery, characterized in that, Comprising: A shock-absorbing seat; An outer protective shell assembly, which is connected to the shock-absorbing seat; An inner protective shell assembly, which is connected to the outer protective shell assembly; A replaceable battery assembly, which is inserted and movably connected to the inside of the inner protective shell assembly; A thermal control device, which is connected to the outer protective shell assembly; A multi-point fastening device, which is connected to the thermal control device and is used for limiting and fixing the replaceable battery assembly; Among them, the thermal control device includes: A heat storage component, which is connected to the outer protective shell assembly and is used for collecting waste heat; A pressure control component, which is connected to the inner protective shell assembly and is used for controlling the heat release of the heat storage component; The outer protective shell assembly includes: An outer protective shell, which is connected to the shock-absorbing seat; A plurality of air inlets, which are arranged on the bottom side of the outer protective shell; A blower, which is connected to the bottom side inside the outer protective shell and is communicated with the plurality of air inlets; A bottom bin, which is fixedly connected to the bottom side inside the outer protective shell and is communicated with the side of the blower away from the air inlets; A plurality of first control parts, which are connected to the side of the bottom bin away from the blower; The inner protective shell assembly includes: An inner protective shell, which is connected to the side of the bottom bin away from the blower; A plurality of negative pressure parts, which are communicated with the inner protective shell; A plurality of first limiting grooves, which are arranged on the bottom side of the inner protective shell; A plurality of second limiting grooves, which are arranged on the bottom side of the inner protective shell and are used to cooperate with the plurality of first limiting grooves to complete the bottom limit of the replaceable battery assembly; The replaceable battery assembly includes: A battery pack, which is inserted and movably connected to the inner protective shell; A plurality of heat discharge ports, which are arranged on the outside of the battery pack; A plurality of first elastic parts, which are connected to the bottom side of the battery pack; the first elastic part is selected as an elastic telescopic plate; A plurality of positioning blocks, which are connected to the bottom side of the battery pack; A plurality of inclined plane frames, which are connected to the top side of the battery pack; The heat storage component includes: A plurality of partition bins, which are connected to the outer protective shell; A heat storage material part, which is arranged inside the partition bin; The pressure control component includes: A second control part, which is communicated with the bottom bin; A pressurization bin, which is connected to the inner protective shell and is communicated with the end of the second control part away from the bottom bin; A second elastic part, which is connected to the inside of the pressurization bin; A piston telescopic frame, which is inserted and movably connected to the pressurization bin and is connected to the second elastic part; A grid plate, which is connected to the end of the piston telescopic frame away from the second elastic part; A protruding part is arranged on the side of the grid plate close to the heat storage material part. When the protruding part of the grid plate is pressed into the heat storage material part by a certain distance, a certain pressure is given to the inside of the heat storage material part, and a plurality of heat storage material parts undergo an inverse phase change from liquid to solid.

2. The low-temperature resistant lead-acid battery according to claim 1, characterized in that, The multi-point fastening device includes: A fixing frame, which is connected to the partition bin; A limiting frame, one side of the limiting frame is connected to one end of the fixed frame away from the bin partition, and the other side is fixedly connected to the outer side of the inner protective shell; A driving member, the driving member is connected to the top side of the limiting frame; A pressing plate, the pressing plate is connected to the side of the driving member away from the limiting frame.

3. The low-temperature resistant lead-acid battery according to claim 1, wherein The negative electrode plate includes a negative electrode active material, and the negative electrode active material is composed of the following components in a weight ratio: Lead powder: 1000 kg, as the base material; Lignin: 2 kg; Humic acid: 5 kg; High specific surface area barium sulfate: 6 kg, used to enhance electrical conductivity and structural stability; Acetylene black: 2 kg, as a high-conductivity additive; Super conductive carbon black: 2.5 kg, as a high-conductivity additive; PBX51 Cabot carbon black: 1 kg, as a high-conductivity additive; Graphene: 0.2 kg, as a high-conductivity additive; Fiber: 0.75 kg, used to improve structural strength and dispersibility; Dilute sulfuric acid with a specific gravity of 1.26: 100 kg, as a solvent and electrolyte precursor; Pure water: 95 kg, as a solvent.

Images