CN118783580A - A mobile power source with modular battery cells - Google Patents

Abstract

The present invention relates to the technical field of mobile power supplies, and in particular to a mobile power supply with modular battery cells, comprising an outer box, a control module, a plurality of battery cell modules, a pressure sensing module, a temperature sensing module, a plurality of connection modules, a thermally conductive fuse module and a warning module. The present invention senses the internal pressure value of the battery cell module through the pressure sensing module, and judges that the battery cell module is abnormal if the internal pressure value of the sensed battery cell module is greater than the preset battery cell internal pressure value; prompts the user to stop using the abnormal battery cell module through the warning module, and if the temperature of the abnormal battery cell module continues to increase, the heat of the abnormal battery cell module is transferred to the connection module through the thermally conductive fuse module, so that the connection module is melted and the abnormal battery cell module is disconnected from the outer box; prompts the user to take the mobile power supply away and stay away from the abnormal battery cell module through the warning module. It is possible to avoid thermal runaway of multiple battery cell modules, which may cause the entire mobile power supply to fail, prevent fire, and improve the safety of using the mobile power supply.

Description

A mobile power source with modular battery cells

Technical Field

The present invention relates to the technical field of mobile power supplies, and in particular to a mobile power supply with modularized battery cells.

Background Art

A mobile power bank is a portable charger that can be carried around to store electrical energy. It is mainly used to charge consumer electronic products such as handheld mobile devices and is particularly suitable for situations where there is no external power supply.

During use, if the working temperature of the mobile power supply is abnormal, it is usually because the temperature inside one or part of the battery cells rises abnormally. At this time, the mobile power supply may still work normally, but there will be problems such as temperature rise, battery bulging, and shell deformation. If it is not handled, it may cause thermal runaway of multiple batteries, failure of the entire mobile power supply, and even fire and other serious safety problems. Therefore, in order to use the mobile power supply safely, it is necessary to improve it.

Summary of the invention

The purpose of the present invention is to provide a mobile power supply with modular battery cells in view of the deficiencies of the prior art. The present invention senses the internal pressure value of the battery cell module through a pressure sensing module. If the internal pressure value of the battery cell module is greater than the preset internal pressure value of the battery cell, the battery cell module is judged to be abnormal; the user is prompted to stop using the abnormal battery cell module through the warning module. If the temperature of the abnormal battery cell module continues to increase, the heat of the abnormal battery cell module is transferred to the connection module through the thermal fuse module, so that the connection module is melted, thereby disconnecting the abnormal battery cell module from the outer box; the user is prompted to take the mobile power supply away and stay away from the abnormal battery cell module through the warning module. On the one hand, it prevents thermal runaway of multiple battery cell modules, which makes the entire mobile power supply fail, prevents fire, and improves the safety of mobile power supply use. On the other hand, it prevents abnormal battery cell modules from affecting normal battery cell modules, so that normal battery cell modules can continue to be used.

To achieve the above-mentioned purpose, a mobile power source with modularized batteries of the present invention comprises an outer box, a control module, a battery module, a pressure sensing module, a temperature sensing module, a connection module, a thermal fuse module and a warning module, wherein the number of the battery module and the connection module are both multiple;

The control module and the warning module are both fixed to the outer box, the multiple connection modules are respectively connected to the outside of the outer box, the multiple battery modules are respectively connected to the outer box through the multiple connection modules, the pressure sensing module and the temperature sensing module are both arranged in the battery module, the thermal fuse module is arranged at one end of the battery module, the battery module is plugged into the connection module, and the thermal fuse module conflicts with the connection module;

The control module is electrically connected to the pressure sensing module, the temperature sensing module and the plurality of battery core modules;

The battery cell module is used to store electrical energy;

The pressure sensing module is used to sense the internal pressure of the battery cell module;

The temperature sensing module is used to sense the temperature of the battery cell module;

The thermal fuse module is used to conduct the heat generated by thermal runaway of the battery module to fuse the connection module, so that the battery module is separated from the outer box;

The warning module is used to warn the user when the battery cell temperature is too high;

The mobile power supply also includes the following working methods:

A. The pressure sensing module senses the internal pressure value p2 of the battery cell module and feeds it back to the control module. The control module compares the internal pressure value p2 of the battery cell module with the preset internal pressure value p1 of the battery cell. If the internal pressure value p2 of the battery cell module is greater than the preset internal pressure value p1 of the battery cell, step B is executed;

B. If the battery module is judged to be abnormal, the control module prompts the user to stop using the abnormal battery module through the warning module, and continuously senses the state and temperature of the abnormal battery module;

C. Record and analyze the temperature of the abnormal battery cell module through the control module. If the temperature of the abnormal battery cell module continues to increase, execute step D;

D. The thermally conductive fuse module conducts the heat of the abnormal battery cell module to the connection module, so that the temperature of the connection module rises; when the temperature of the connection module rises to the melting point, it fuses, thereby disconnecting the abnormal battery cell module from the outer box, and then executing step E;

E. The control module prompts the user to remove the mobile power supply and stay away from the abnormal battery cell module through the warning module.

Beneficial effects of the present invention: The present invention senses the internal pressure value of the battery cell module through the pressure sensing module, and determines that the battery cell module is abnormal when the internal pressure value of the sensed battery cell module is greater than the preset battery cell internal pressure value; prompts the user to stop using the abnormal battery cell module through the warning module. If the temperature of the abnormal battery cell module continues to increase, the heat of the abnormal battery cell module is transferred to the connection module through the thermal fuse module, so that the connection module is melted, thereby disconnecting the abnormal battery cell module from the outer box; prompts the user to take away the mobile power supply and stay away from the abnormal battery cell module through the warning module. On the one hand, it prevents thermal runaway of multiple battery cell modules, which would cause the entire mobile power supply to fail, prevents fire, and improves the safety of using the mobile power supply. On the other hand, it prevents abnormal battery cell modules from affecting normal battery cell modules, so that normal battery cell modules can continue to be used.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of a battery cell module, a connection module and a thermally conductive fuse module of the present invention.

FIG. 3 is a schematic structural diagram of a battery cell module and a thermally conductive fuse module of the present invention.

FIG. 4 is a schematic structural diagram of a connection module of the present invention.

Reference numerals include:

1. Outer box; 2. Battery cell module; 21. Battery cell shell; 211. Accommodating cavity; 212. Limiting groove; 213. Heat collecting part; 214. Hot melt protrusion; 22. Battery cell; 23. Heat insulation cover; 231. Clamping part; 232. Folding cover; 233. Resetting part; 3. Connecting module; 31. Fixing part; 32. Connecting part; 33. Hot melt part; 331. First hot melt part; 332. Second hot melt part; 34. Bending part; 35. Elastic part; 36. Sliding part; 4. Thermal fuse module; 41. First thermal conductive part; 411. Elastic part; 42. Second thermal conductive part; 43. Heat dissipation part.

DETAILED DESCRIPTION

The present invention is described in detail below with reference to the accompanying drawings.

As shown in Figures 1 to 4, a modular battery cell mobile power supply of the present invention includes an outer box 1, a control module, a battery cell module 2, a pressure sensing module, a temperature sensing module, a connection module 3, a thermal fuse module 4, and a warning module. The number of battery cell modules 2 and connection modules 3 are both multiple.

The control module and the warning module are both fixed to the outer box 1, and the plurality of connection modules 3 are respectively connected to the outside of the outer box 1, and the plurality of battery modules 2 are respectively connected to the outer box 1 through the plurality of connection modules 3. The pressure sensing module and the temperature sensing module are both arranged in the battery module 2, and the thermal fuse module 4 is arranged at one end of the battery module 2. The battery module 2 is plugged with the connection module 3, and the thermal fuse module 4 is in conflict with the connection module 3. The control module is electrically connected to the pressure sensing module, the temperature sensing module and the plurality of battery modules 2.

The battery cell module 2 is used to store electrical energy.

The pressure sensing module is used to sense the internal pressure of the battery cell module 2 .

The temperature sensing module is used to sense the temperature of the battery cell module 2 .

The thermally conductive fuse module 4 is used to conduct the heat generated by the thermal runaway of the battery cell module 2 to fuse the connection module 3 , so as to separate the battery cell module 2 from the outer box 1 .

The warning module is used to warn the user when the battery core temperature is too high. Specifically, the warning module includes a display screen and/or a speaker. The display screen can display prompt text. Preferably, the display screen is a monochrome display screen to reduce power consumption. The speaker is a miniature speaker that can play prompt voice.

Specifically, the pressure sensing module, the temperature sensing module and the multiple battery cell modules 2 are electrically connected to the control module through spring pins and connecting contacts. The spring pins are fixed to the outer wall of the battery cell module 2, and the connecting contacts are arranged in the connecting module 3 to facilitate the conduction of heat caused by thermal runaway of the battery cell module 2 to melt the connecting module 3. When the pressure sensing module, the temperature sensing module and the battery cell module 2 are disconnected from the control module.

The mobile power supply of the present invention also includes the following working method:

A. The pressure sensing module senses the internal pressure value p2 of the battery cell module 2 and feeds it back to the control module. The control module compares the sensed internal pressure value p2 of the battery cell module 2 with the preset internal pressure value p1 of the battery cell 22. If the sensed internal pressure value p2 of the battery cell module 2 is greater than the preset internal pressure value p1 of the battery cell 22, step B is executed;

B. If the battery cell module 2 is judged to be abnormal, the control module prompts the user to stop using the abnormal battery cell module 2 through the warning module, and continuously senses the state and temperature of the abnormal battery cell module 2;

C. Record and analyze the temperature of the abnormal battery cell module 2 through the control module. If the temperature of the abnormal battery cell module 2 continues to increase, execute step D;

D. The thermally conductive fuse module 4 conducts the heat of the abnormal battery cell module 2 to the connection module 3, so that the temperature of the connection module 3 rises; when the temperature of the connection module 3 rises to the melting point, it fuses, thereby disconnecting the abnormal battery cell module 2 from the outer box 1, and then executing step E;

E. The control module prompts the user to remove the mobile power supply and keep it away from the abnormal battery module 2 through the warning module. On the one hand, it prevents multiple battery modules 2 from thermal runaway, which would cause the entire mobile power supply to fail, prevents fire, and improves the safety of mobile power supply use. On the other hand, it prevents abnormal battery modules 2 from affecting normal battery modules 2, so that normal battery modules 2 can continue to be used.

As shown in FIG. 2 and FIG. 3 , the battery cell module 2 of the present embodiment includes a battery cell housing 21 and at least one battery cell 22 fixed in the battery cell housing 21 , wherein the battery cell 22 may be a soft-pack battery cell.

The cell housing 21 is provided with a receiving cavity 211, and a plurality of limiting grooves 212 are provided in the receiving cavity 211. The plurality of cells 22 are installed in correspondence with the plurality of limiting grooves 212, so that the cells 22 are fixed in the receiving cavity 211. A heat collecting member 213 is provided between the limiting grooves 212 and the cells 22, and the heat of the cells 22 is collected by the heat collecting member 213. Specifically, the heat collecting member 213 may be a heat conducting sponge or a heat conducting sheet.

The heat collector 213 is connected to the thermally conductive fuse module 4 so that the heat of the battery cell 22 is transferred to the thermally conductive fuse module 4 , which facilitates the transfer of heat generated by thermal runaway of the battery cell module 2 to fuse the connecting module 3 , thereby separating the abnormal battery cell module 2 from the outer box 1 .

As shown in FIG. 3 , the thermally conductive fuse module 4 of this embodiment includes a first thermally conductive member 41 , a second thermally conductive member 42 and a heat dissipating member 43 .

A hot melt protrusion 214 is disposed in the accommodating cavity 211 , one end of the heat sink 43 is fixed to the surface of the battery cell housing 21 , and the other end of the heat sink 43 is fixed to the hot melt protrusion 214 , so that the heat sink 43 is fixed.

One end of the first heat-conducting member 41 is connected to the heat-collecting member 213, and the other end of the first heat-conducting member 41 is provided with an elastic portion 411, which is bent and deformed and bonded to the hot-melt protrusion 214 and the heat sink 43, so that when the battery cell 22 works normally, the heat of the battery cell 22 can be transferred to the heat sink 43 through the elastic portion 411 of the first heat-conducting member 41 for heat dissipation. Specifically, the elastic portion 411 is bent and deformed and bonded to the hot-melt protrusion 214 and connected to one end of the heat sink 43 fixed to the hot-melt protrusion 214.

The second heat conducting member 42 is disposed on one side of the hot melt protrusion 214 , and one end of the second heat conducting member 42 away from the hot melt protrusion 214 abuts against the connecting module 3 , so that the thermally conductive fuse module 4 abuts against the connecting module 3 .

Step D is specifically as follows:

D1. The temperature of the abnormal battery cell 22 is conducted through the heat collector 213 to the connection between the elastic portion of the first heat conducting member 41 and the hot melt protrusion 214, so that the temperature of the hot melt protrusion 214 is consistent with the temperature of the abnormal battery cell 22;

D2. The hot melt projection 214 melts as the temperature rises, and the elastic portion is separated from the hot melt projection 214;

D3. The elastic portion and the heat sink 43 are fixed to one end of the hot melt projection 214 and separated;

D4. The elastic portion recovers its deformation and is connected to the second heat-conducting member 42, so that the heat of the abnormal battery cell 22 is transferred to the second heat-conducting member 42;

D5. The contact point between the second heat-conducting member 42 and the connecting module 3 melts due to the temperature rise, so that the connecting module 3 is blown, so that the abnormal battery cell module 2 is separated from the outer box 1 .

Preferably, the second heat conductor 42 is provided with a heating wire, which is electrically connected to the control module; when the temperature of the abnormal battery cell 22 continues to increase, the control module controls the heating wire to connect to the normal battery cell module 2, thereby making the heating wire work and accelerating the fusing speed of the connection module 3.

The hot melting temperature of the hot melt protrusion 214 ranges from 80° to 120°. Specifically, the hot melt protrusion 214 can be one of polyvinyl chloride with a melting point of 80° to 90°, low-density polyethylene with a melting point of 105° to 115°, or polystyrene with a melting point of 100° to 120°.

As shown in Figure 4, the connection module 3 of this embodiment includes a fixing part 31 and a connecting part 32. The fixing part 31 is connected to the outer box 1, and the connecting part 32 is arranged on one side of the fixing part 31. The battery cell module 2 is inserted into the connecting part 32. A hot melt part 33 is arranged between the connecting part 32 and the fixing part 31. The hot melt part 33 is in contact with one end of the thermal conductive fuse module 4, so that the thermal conductive fuse module 4 is in contact with the connection module 3.

As shown in FIG4 , an elastic member 35 is provided between the fixing portion 31 and the connecting portion 32 of the present embodiment, one end of the elastic member 35 is fixed to the fixing portion 31, and the other end of the elastic member 35 contacts the connecting portion 32. When the thermally conductive fuse module 4 conducts the heat of the abnormal battery cell module 2 to the connecting module 3, and the connecting module 3 is fused, the elastic member 35 separates the connecting portion 32 from the fixing portion 31 through elastic force, thereby separating the battery cell module 2 and the connecting portion 32 from the outer box 1.

As shown in Figure 4, the hot melt portion 33 of this embodiment includes a first hot melt component 331 and a second hot melt component 332, one end of the first hot melt component 331 is connected to the connecting portion 32, one end of the second hot melt component 332 is connected to the fixing portion 31, one end of the first hot melt component 331 away from the connecting portion 32 is connected to one end of the second hot melt component 332 away from the fixing portion 31, and a bending portion 34 is provided at the connection between the first hot melt component 331 and the second hot melt component 332, one end of the thermal conductive fuse module 4 conflicts with the bending portion 34, so that the thermal conductive fuse module 4 conflicts with the connecting module 3.

As shown in FIG3 , the cell module 2 of this embodiment further includes a heat shield 23, the opening end of which is provided with a clamping portion 231, the heat shield 23 is sleeved on the outside of the cell housing 21, and the clamping portion 231 is clamped on the bending portion 34, so that the heat shield 23 is fixed to the outside of the cell module 2. When the cell module 2 is thermally runaway, the heat of the cell module 2 is isolated from the outside by the heat shield 23 to avoid scalding the user or the handling personnel, and to facilitate the movement of the abnormal cell module 2, thereby facilitating the cooling of the abnormal cell module 2.

Specifically, the heat shield 23 is provided with heat dissipation holes corresponding to the heat dissipation element 43 to facilitate the heat dissipation element 43 to contact with the outside world for heat exchange.

As shown in FIG3 , a folding cover 232 is disposed at one end of the clamping portion 231 of the present embodiment, and a reset member 233 is disposed between the folding cover 232 and the clamping portion 231, and the reset member 233 is a torsion spring. The reset member 233 is used to fold the folding cover 232 and close the open end of the heat insulation cover 23, and a guide slide 36 is disposed between the fixing portion 31 and the hot melt portion 33, and the guide slide 36 is a guide slide inclined surface.

The folding cover 232 closes the open end of the heat shield 23, which specifically includes the following steps:

F1. The connection module 3 is blown, and the fixing portion 31 and the connecting portion 32 are no longer connected to each other;

F2. The elastic member 35 recovers its deformation and pushes the connecting portion 32 away from the fixing portion 31, ensuring that the fixing portion 31 is completely separated from the connecting portion 32;

F3. Because the fixing portion 31 is away from the connecting portion 32, the reset member 233 is reset so that the folding cover 232 slides along the guide portion 36 close to the opening end of the heat shield 23, and further pushes the fixing portion 31 away from the connecting portion 32;

F4. The fixing part 31 and the connecting part 32 are completely separated, and the folding cover 232 closes the open end of the heat insulating cover 23 to prevent the abnormal heat of the battery cell module 2 from being ejected outward through the open end of the heat insulating cover 23 .

Preferably, the heat insulation cover 23 comprises an inner wall layer, a heat insulation interlayer and a surface layer from inside to outside.

The heat insulating interlayer includes one or more of a ceramic fiber material layer, a mineral wool heat insulating material layer and a silicate fiber material layer.

The ceramic fiber material layer is composed of ceramic fibers, alumina and other substances.

Mineral wool insulation material layer, made from natural minerals such as basalt and stone powder.

The silicate fiber material layer is made of silicate and alumina fibers.

The inner wall layer and the surface layer are both made of engineering plastics, and the engineering plastics mainly include one or more of polyimide, polyphenylene sulfide, polysulfone, aromatic polyamide and the like.

The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims (8)

1. A mobile power supply of modularization electricity core, its characterized in that: the device comprises an outer box (1), a control module, a battery cell module (2), a pressure sensing module, a temperature sensing module, a connecting module (3), a heat conduction fusing module (4) and a warning module, wherein the number of the battery cell module (2) and the number of the connecting module (3) are all multiple;

The control module and the warning module are both fixed on the outer box (1), the plurality of connecting modules (3) are respectively connected to the outer side of the outer box (1), the plurality of battery cells modules (2) are respectively connected with the outer box (1) through the plurality of connecting modules (3), the pressure sensing module and the temperature sensing module are both arranged in the battery cells modules (2), the heat conduction fusing module (4) is arranged at one end of the battery cells (2), the battery cells (2) are spliced with the connecting modules (3), and the heat conduction fusing module (4) is in conflict with the connecting modules (3);

the control module is electrically connected with the pressure sensing module, the temperature sensing module and the plurality of battery cells modules (2);

the battery cell module (2) is used for storing electric energy;

The pressure sensing module is used for sensing the internal pressure of the cell module (2);

the temperature sensing module is used for sensing the temperature of the cell module (2);

the heat conduction fusing module (4) is used for conducting heat generated by thermal runaway of the battery cell module (2) to fuse the connecting module (3) so as to separate the battery cell module (2) from the outer box (1);

the warning module is used for warning a user when the temperature of the battery cell is too high;

the mobile power supply also comprises the following working methods:

A. The pressure sensing module senses the internal pressure value p2 of the battery cell module (2) and feeds back the internal pressure value p2 to the control module, the control module compares the internal pressure value p2 of the battery cell module (2) with a preset internal pressure value p1 of the battery cell (22), and if the internal pressure value p2 of the battery cell module (2) is greater than the preset internal pressure value p1 of the battery cell (22), the step B is executed;

B. Judging that the battery cell module (2) is abnormal, prompting a user to stop using the abnormal battery cell module (2) through the warning module, and continuously sensing the state of the abnormal battery cell module (2) and the temperature of the abnormal battery cell module (2);

C. Recording and analyzing the temperature of the abnormal cell module (2) through a control module, and if the temperature of the abnormal cell module (2) is continuously increased, executing the step D;

D. the heat conduction fusing module (4) conducts heat of the abnormal battery cell module (2) to the connecting module (3) so as to heat the connecting module (3); fusing when the temperature of the connecting module (3) is increased to the melting point, so that the abnormal cell module (2) is disconnected with the outer box (1), and then executing the step E;

E. The control module prompts a user to take the mobile power supply away from the abnormal battery cell module (2) through the warning module.

2. A modular cell mobile power supply according to claim 1, characterized in that: the cell module (2) comprises a cell housing (21) and at least one cell (22) fixed in the cell housing (21),

A containing cavity (211) is arranged in the battery cell shell (21), a plurality of limit grooves (212) are arranged in the containing cavity (211), a plurality of battery cells (22) are correspondingly arranged with the limit grooves (212) one by one, and a heat collecting piece (213) is arranged between the limit grooves (212) and the battery cells (22);

the heat collecting piece (213) is connected with the heat conduction fusing module (4).

3. A modular cell mobile power supply according to claim 2, characterized in that: the heat conduction fusing module (4) comprises a first heat conduction member (41), a second heat conduction member (42) and a heat dissipation member (43);

a hot-melt boss (214) is arranged in the accommodating cavity (211), one end of the heat dissipation part (43) is fixed on the surface of the battery cell shell (21), and the other end of the heat dissipation part (43) is fixed on the hot-melt boss (214);

One end of the first heat conduction piece (41) is connected with the heat collection piece (213), an elastic part (411) is arranged at the other end of the first heat conduction piece (41), the elastic part (411) is bent, deformed and adhered to the hot-melt protrusion table (214) and the heat dissipation piece (43), the second heat conduction piece (42) is arranged at one side of the hot-melt protrusion table (214), and one end of the second heat conduction piece (42) far away from the hot-melt protrusion table (214) is abutted against the connection module (3);

The step D is specifically as follows:

D1. the temperature of the abnormal battery cell (22) is conducted to the connection part of the elastic part of the first heat conduction piece (41) and the hot melting protrusion table (214) through the heat collection piece (213), so that the temperature of the hot melting protrusion table (214) is consistent with the temperature of the abnormal battery cell (22);

D2. The hot-melt protrusion (214) melts with the temperature rise, and the elastic part is separated from the hot-melt protrusion (214);

D3. the elastic part is separated from one end of the heat dissipation piece (43) fixed on the hot melting lug (214);

D4. the elastic part recovers deformation and is connected with the second heat conduction piece (42) so as to conduct heat of the abnormal battery cell (22) to the second heat conduction piece (42);

D5. the interference part of the second heat conduction piece (42) and the connecting module (3) is melted due to the temperature rise, so that the connecting module (3) is fused, and the abnormal battery cell module (2) is separated from the outer box (1);

wherein the thermal melting temperature of the thermal melting boss (214) ranges from 80 degrees to 120 degrees.

4. A modular cell mobile power supply according to claim 1, characterized in that: the connection module (3) comprises a fixing part (31) and a connecting part (32), the fixing part (31) is connected with the outer box (1), the connecting part (32) is arranged on one side of the fixing part (31), the cell module (2) is inserted into the connecting part (32), a hot melting part (33) is arranged between the connecting part (32) and the fixing part (31), and the hot melting part (33) is abutted against one end of the heat conduction fusing module (4).

5. A modular cell mobile power supply according to claim 4, wherein: an elastic piece (35) is arranged between the fixing part (31) and the connecting part (32), one end of the elastic piece (35) is fixed on the fixing part (31), and the other end of the elastic piece (35) is abutted against the connecting part (32).

6. A modular cell mobile power supply according to claim 4, wherein: the hot melt portion (33) includes first hot melt piece (331) and second hot melt piece (332), the one end and the connecting portion (32) of first hot melt piece (331) are connected, the one end and the fixed part (31) of second hot melt piece (332), the one end that connecting portion (32) was kept away from to first hot melt piece (331) is connected with the one end that fixed part (31) was kept away from to second hot melt piece (332), and the junction of first hot melt piece (331) and second hot melt piece (332) is provided with bending portion (34), the one end and the bending portion (34) of heat conduction fusing module (4) conflict.

7. A modular cell mobile power supply according to claim 6, wherein: the cell module (2) further comprises a heat shield (23), the opening end of the heat shield (23) is provided with a clamping part (231), the heat shield (23) is sleeved outside the cell module (2), and the clamping part (231) is clamped on the bending part (34).

8. A modular cell mobile power supply according to claim 7, wherein: one end of the clamping part (231) is provided with a turnover cover (232), a resetting piece (233) is arranged between the turnover cover (232) and the clamping part (231), the resetting piece (233) is used for turning over the turnover cover (232) and closing the open end of the heat shield (23), and a sliding guide part (36) is arranged between the fixing part (31) and the hot melting part (33);

the turnover cover (232) seals the opening end of the heat shield (23), and specifically comprises the following steps:

F1. The connecting module (3) is fused, and the fixing part (31) and the connecting part (32) are not connected any more;

F2. The elastic piece (35) restores deformation to push the connecting part (32) away from the fixing part (31), so that the fixing part (31) and the connecting part (32) are completely separated;

F3. Because the fixing part (31) is far away from the connecting part (32), the resetting piece (233) is reset to enable the turnover cover (232) to slide along the sliding guide part (36) to be close to the opening end of the heat shield (23), and meanwhile the fixing part (31) is further pushed away from the connecting part (32);

F4. The fixing part (31) is completely separated from the connecting part (32), and the turnover cover (232) seals the opening end of the heat shield (23).