CN216145679U

CN216145679U - Thermal safety management system and battery

Info

Publication number: CN216145679U
Application number: CN202121467080.3U
Authority: CN
Inventors: 蒋露霞; 鲁海霞; 蒋露梅
Original assignee: Shenzhen Nanhai High And New Technology Co ltd
Current assignee: Shenzhen Nanhai High And New Technology Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-03-29
Anticipated expiration: 2031-06-29

Abstract

The utility model relates to the technical field of battery equipment, in particular to a thermal safety management system and a battery. The thermal safety management system comprises a box body; the whole package heat conduction mechanism is arranged in the box body; the heat conducting pieces are arranged in the box body at intervals in sequence, the heat conducting pieces are in thermal contact with the whole package of heat conducting mechanism, an installation area used for accommodating and installing an electric core is formed between every two adjacent heat conducting pieces, the installation area can accommodate and install at least one electric core, each heat conducting piece is provided with an attaching end face, the attaching end face is used for being abutted against the side face of the electric core accommodated and installed in the installation area, the abutting area of the attaching end face and the electric core is 60% -100% of the side face area of the electric core, the design increases the effective thermal contact area of the heat conducting pieces and the electric core, enhances the efficiency of heat transferred from the electric core to the heat conducting pieces, and greatly improves the heat dissipation capacity of the thermal safety management system.

Description

Thermal safety management system and battery

Technical Field

The utility model relates to the technical field of battery equipment, in particular to a thermal safety management system and a battery.

Background

With the increasing global energy problem and environmental problem, green energy has attracted great attention, and various corresponding battery packs have been developed, and in a ternary lithium battery pack, a thermal safety management system is usually arranged to dissipate heat generated by the battery pack to prevent the battery pack from malfunctioning. The traditional heat dissipation method is to arrange heat-insulating fireproof materials between the cell units to relieve heat diffusion between the cell units, but the heat generated by the cell is not obviously dissipated by the method, so that the cell bulges, burns or thermal runaway can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a thermal safety management system, which is used for solving the problem that heat generated by a battery core cannot be effectively eliminated in the prior art.

To solve the above problems, the present invention provides a thermal safety management system, including:

a box body;

the whole package heat conduction mechanism is arranged in the box body;

the heat conduction pieces are arranged in the box body at intervals according to the sequence, the heat conduction pieces are in thermal contact with the whole package heat conduction mechanism, an installation area used for accommodating and installing an electric core is formed between every two adjacent heat conduction pieces, the installation area can accommodate and install at least one electric core, each heat conduction piece is provided with a joint end face, the joint end face is used for being abutted against the side face of the electric core accommodated and installed in the installation area, and the abutted area of the joint end face and the electric core is 60% -100% of the side face area of the electric core.

In a possible implementation manner, the heat conducting member includes a supporting portion and an abutting portion, the supporting portion is in thermal contact with the whole package heat conducting mechanism, and the abutting portion has the attaching end surface for attaching and contacting with the battery cell.

In a possible implementation manner, the supporting portion is connected to the abutting portion in an L shape, one end of the supporting portion is in thermal contact with the whole package heat conducting mechanism, the other end of the supporting portion extends away from the whole package heat conducting mechanism to form the abutting portion, and the mounting area is formed between two adjacent abutting portions.

In a possible implementation manner, the whole package heat conduction mechanism includes a direct cooling plate or a conventional liquid cooling plate, the heat conduction members are sequentially arranged on the direct cooling plate or the conventional liquid cooling plate at intervals, and the heat conduction members are in thermal contact with the direct cooling plate or the conventional liquid cooling plate.

In a possible implementation mode, whole package heat conduction mechanism still includes the feed liquor subassembly and goes out the liquid subassembly, the stock solution room has been seted up on the straight cold plate, the stock solution room is used for storing the liquid of cooling heat conduction, the feed liquor subassembly with go out the liquid subassembly respectively with the stock solution room intercommunication.

In a possible implementation manner, a loop heat pipe is arranged in the heat conducting member, and the loop heat pipe is arranged in the heat conducting member in a penetrating manner.

In a possible implementation manner, the wall thickness of the loop heat pipe is 0.3mm to 1mm, and the section radius of the loop heat pipe is 3mm to 10 mm.

In a possible implementation manner, the installation area can accommodate and install 1 to 5 battery cells.

In one possible implementation, 2 battery cells are accommodated in the installation region.

The utility model provides a battery, which comprises the thermal safety management system and a plurality of battery cores, wherein the battery cores are arranged in the installation area.

The utility model has the beneficial effects that: the utility model provides a thermal safety management system, which comprises a box body, a whole package heat conduction mechanism arranged in the box body and a plurality of heat conduction pieces arranged in sequence, wherein an installation area for installing an electric core is formed between every two adjacent heat conduction pieces, the heat conduction pieces are in thermal contact with the whole package heat conduction mechanism, the heat conduction pieces are provided with joint end faces jointed with the electric core, the effective thermal contact area of the heat conduction pieces and the electric core is maximized, the efficiency of heat transfer from the electric core to the heat conduction pieces is further enhanced, and the heat dissipation capacity of the thermal safety management system is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 shows an exploded view of a thermal safety management system;

FIG. 2 shows a partially enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic diagram showing the internal structure of the thermal safety management system;

FIG. 4 is an enlarged partial view of portion B of FIG. 3;

fig. 5 is a schematic structural view of the heat-conducting member;

FIG. 6 is a schematic view showing a structure in which a loop heat pipe is provided in a heat conductive member;

FIG. 7 shows a schematic structural diagram of a bale heat conducting mechanism;

fig. 8 shows a partially enlarged schematic view of portion C of fig. 7.

Description of the main element symbols:

100-a box body; 110-a guard plate; 120-a fixation rod; 200-a whole package heat conducting mechanism; 210-direct cooling plate; 211-a reservoir; 220-a liquid inlet component; 230-a liquid outlet assembly; 300-a thermally conductive member; 310-a mounting area; 320-a support part; 330-an abutment; 331-attaching end faces; 340-loop heat pipes; 400-electric core; 410-pole ear; 500-cover plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present invention, it should be explained that the tab 410 is a metal conductor that leads out the positive and negative electrodes from the battery cell 400, and in a popular way, the ears of the positive and negative electrodes of the battery cell 400 are contact points during charging and discharging, and the contact points refer not to the copper sheet on the exterior of the battery cell 400, but to a connection inside the battery cell 400. The tab 410 is made of three materials, the positive electrode of the battery cell 400 is made of aluminum (Al), the negative electrode is made of nickel (Ni), and the negative electrode is made of copper-plated nickel (Ni-Cu), which are made of a film and a metal tape.

The utility model provides a thermal safety management system, which is applied to a new energy battery pack, wherein the new energy battery pack comprises a solar battery pack, a wind energy battery pack, a geothermal energy battery pack, various lithium battery packs and the like.

Referring to fig. 1 and 2, the thermal safety management system includes a box 100, a whole package of heat conducting mechanism 200 disposed in the box 100, and heat conducting members 300 sequentially and intermittently disposed in the box 100.

Referring to fig. 3 and 4, specifically, the whole package heat conducting mechanism 200 is disposed at the bottom of the box 100, and the whole package heat conducting mechanism 200 is in thermal contact with the heat conducting members 300, a mounting area 310 for accommodating and mounting the battery cells 400 is formed between two adjacent heat conducting members 300, the mounting area 310 can accommodate and mount at least one battery cell 400, and heat generated by the battery cell 400 is transferred to the whole package heat conducting mechanism 200 for dissipation through the action of the heat conducting members 300, so that the heat dissipation speed of the thermal safety management system is faster.

Referring to fig. 5, the heat conducting member 300 has a joint end surface 331 for abutting against the battery cell 400 accommodated in the mounting area 310, the joint end surface 331 is tightly abutted against the side surface of the battery cell 400, and the abutting area of the joint end surface 331 and the battery cell 400 is 60% to 100% of the area of the side surface of the battery cell 400, so that the effective thermal contact area between the heat conducting member 300 and the battery cell 400 is maximized, the rate of heat transfer from the battery cell 400 to the heat conducting member 300 is increased, and the heat dissipation effect of the thermal safety management system is greatly improved.

Referring to fig. 2 and fig. 4, in the present embodiment, the heat conducting member 300 includes a supporting portion 320 and an abutting portion 330, the supporting portion 320 is configured to thermally contact the entire package heat conducting mechanism 200, and the abutting portion 330 has an attaching end surface 331 configured to attach to the battery cell 400.

Specifically, one end of the heat conducting member 300 forms a supporting portion 320 to be in thermal contact with the entire package heat conducting mechanism 200, the other end of the heat conducting member is far away from the entire package heat conducting mechanism 200 and extends to form an abutting portion 330 to be tightly attached to the battery cell 400, the supporting portion 320 is connected to the abutting portion 330 in an L-shaped manner, and a mounting area 310 for accommodating and mounting the battery cell 400 is formed between two adjacent abutting portions 330.

The heat conductive member 300 has a fitting end surface 331 for fitting the battery cell 400.

Specifically, heat-conducting piece 300 includes support portion 320 and butt portion 330, butt portion 330 is last to have two laminating terminal surfaces 331, all laminating terminal surfaces 331 all closely laminate with the side of electric core 400, and the area of laminating terminal surface 331 and the area of electric core 400 contact is between 60% -100% of the side area of electric core 400, reach the biggest in order to guarantee that the effective thermal contact area of heat-conducting piece 300 and electric core 400 reaches, and then realize the speed that accelerates heat transfer, this thermal safety management system's that has greatly improved heat transfer capacity.

Referring to fig. 6, a loop heat pipe 340 is disposed in the heat conducting member 300, and the loop heat pipe 340 is disposed in the heat conducting member 300 in a penetrating manner.

In the present embodiment, the loop heat pipe 340 is disposed inside the heat conducting member 300 through the supporting portion 320 and the abutting portion 330, and the loop heat pipe 340 has a wall thickness of 0.3mm to 1mm and a cross-sectional radius of 3mm to 10 mm.

With continued reference to fig. 6, in particular, the loop heat pipe 340 is connected end to end and disposed in the heat conducting member 300 through the supporting portion 320 and the abutting portion 330 to increase the heat transfer rate between the abutting portion 330 and the supporting portion 320. The loop heat pipe 340 is arranged in a spiral manner back and forth in the abutting part 330 to increase the heat absorption area of the battery cell 400; the loop heat pipe 340 penetrates in the support part 320 along the extending direction of the heat conductor 300 to increase the heat transfer area between the support part 320 and the direct cooling plate 210. The wall thickness of the loop heat pipe 340 is set to 0.5mm, and the section radius is set to 5mm so that the heat conduction effect of the heat conduction member 300 is optimized.

In other embodiments, the loop heat pipe 340 is disposed in the heat conducting member 300 in a spiral manner, a convolution manner, etc., and the dimensions of the wall thickness and the section radius can be set according to the specification of the heat conducting member 300, so as to optimize the heat conducting performance of the heat conducting member 300, which all fall within the scope of the present disclosure.

Referring to fig. 7, the whole package heat conducting mechanism 200 includes a direct cooling plate 210 or a conventional liquid cooling plate, but is not limited to the direct cooling plate 210 and the conventional liquid cooling plate.

In the present embodiment, the direct cooling plate 210 is disposed in the box 100, and the direct cooling plate 210 is in thermal contact with the heat conducting member 300, so that the direct cooling plate 210 can absorb heat on the heat conducting member 300 for dissipation.

Specifically, the plurality of heat conducting members 300 are sequentially arranged on the direct cooling plate 210 at intervals, one end of each heat conducting member 300 forms a supporting portion 320 to abut against the direct cooling plate 210, the other end of each heat conducting member 300 extends away from the direct cooling plate 210 to form an abutting portion 330, two adjacent abutting portions 330 form a mounting area 310 for accommodating and mounting the battery cell 400, and a plurality of mounting regions 310 are formed on the direct cooling plate 210, the abutting portion 330 has at least two abutting end surfaces 331 for abutting against the battery cells 400, when the battery cell 400 is disposed in the mounting region 310, the abutting end surface 331 of the abutting portion 330 abuts against the battery cell 400, and the area of the contact surface between the fitting end surface 331 and the battery cell 400 is 60-100% of the area of the side surface of the battery cell 400, so as to ensure that the effective heat transfer area is maximized, thereby optimizing the heat transfer from the battery cell 400 to the heat conductive member 300 to achieve the maximum heat dissipation efficiency of the thermal safety management system.

In other embodiments, the heat conducting members 300 are sequentially disposed on the conventional liquid cooling plate at intervals, or the heat conducting members 300 are sequentially disposed on other positions, such as the lower end position and the side end position of the conventional liquid cooling plate at intervals, and the heat conducting members 300 can transfer heat generated by the battery cell 400 to the conventional liquid cooling plate for elimination.

Referring to fig. 7 and 8, the whole package heat conducting mechanism 200 further includes a liquid inlet assembly 220 and a liquid outlet assembly 230.

In the embodiment, the liquid inlet assembly 220 and the liquid outlet assembly 230 are both communicated with the direct cooling plate 210, and liquid flows in the direct cooling plate 210.

Specifically, a liquid storage chamber 211 is formed in the direct cooling plate 210, the liquid storage chamber 211 is used for storing cooling and heat conducting liquid, and the liquid inlet assembly 220 and the liquid outlet assembly 230 are respectively communicated with the liquid storage chamber 211 so as to achieve liquid flowing in the liquid storage chamber 211. After the heat conducting member 300 transfers the heat generated by the battery cell 400 to the direct cooling plate 210, the heat on the direct cooling plate 210 is taken away from the thermal safety management system through the flow of the liquid in the liquid storage chamber 211, so as to eliminate the heat of the battery cell 400.

With continued reference to fig. 1 and fig. 2, at least one battery cell 400 may be accommodated and mounted in the mounting region 310, and the battery cell 400 is attached to the heat-conducting member 300.

It is understood that the number of the battery cells 400 disposed in the mounting area 310 directly affects the thermal conductivity of the thermal safety management system, and thus the number of the battery cells 400 disposed in the mounting area 310 may be planned according to the specification of the battery pack. In the present embodiment, 1 to 5 cells 400 can be accommodated and mounted in the mounting region 310.

Specifically, 2 battery cells 400 can be accommodated and mounted in the mounting area 310, and during assembly, the two battery cells 400 are attached to each other, and two faces away from each other are closely attached to the attachment end surface 331 of the heat conducting member 300, so that the effective thermal contact area of the heat conducting member is ensured to be the largest.

The assembled battery cell 400 is fixed on the direct cooling plate 210 by the fixing rod 120, so as to ensure the stability of the battery cell 400 on the mounting area 310.

Referring to fig. 1 and fig. 2, in the present embodiment, a protective plate 110 is disposed around the box 100, and the protective plate 110 is used to protect the thermal safety management system, so as to prevent the thermal safety management system from being collided to cause a failure of the battery cell 400, or to cause the thermal safety management system to fail to operate normally. The direct cooling plate 210 is fixedly arranged on the bottom surface of the box body 100, and the liquid inlet assembly 220 and the liquid outlet assembly 230 are communicated with the direct cooling plate 210 after penetrating through the guard plate 110.

The plurality of heat conducting members 300 are arranged on the direct cooling plate 210 at intervals in sequence, the plurality of heat conducting members 300 form a mounting area 310 on the direct cooling plate 210, when the battery cell 400 is arranged in the mounting area 310, the abutting portion 330 on the heat conducting member 300 is tightly attached to the battery cell 400, and the supporting portion 320 on the heat conducting member 300 is abutted to the direct cooling plate 210. When electric core 400 produced the heat, heat-conducting piece 300 was quick transmit this heat after absorbing to straight cold plate 210, and straight cold plate 210 passes through the liquid flow in the liquid reserve chamber 211, takes away the produced heat of electric core 400, has realized giving electric core 400 cooling radiating process, through the effective hot contact area of increase heat-conducting piece 300 with electric core 400, and then has improved this thermal safety management system's heat-sinking capability.

Tabs 410 are led out from two ends of the battery cell 400, and the tabs 410 are connected to the protective plate 110 or electrically connected to a power management system of the battery pack, so as to achieve current output of the battery cell 400.

In this embodiment, a cover plate 500 is further disposed at the top end of the box 100, and the cover plate 500 is connected to the guard plate 110 to enclose the battery cell 400 and the thermal safety management system in the box 100, so as to avoid the risk of water entering the thermal safety management system.

This thermal safety management system can be used to all kinds of group battery to carry out the heat dissipation to electric core 400 in the group battery, and then avoid electric core 400 to appear the condition of thermal runaway.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A thermal safety management system, comprising:

a box body;

the whole package heat conduction mechanism is arranged in the box body;

2. The thermal safety management system according to claim 1, wherein the heat conducting member includes a supporting portion and an abutting portion, the supporting portion is in thermal contact with the whole package heat conducting mechanism, and the abutting portion has the abutting end face for abutting contact with the battery cell.

3. The thermal safety management system according to claim 2, wherein the supporting portion is connected to the abutting portion in an L-shape, one end of the supporting portion is in thermal contact with the whole package heat conducting mechanism, the other end of the supporting portion extends away from the whole package heat conducting mechanism to form the abutting portion, and the mounting area is formed between two adjacent abutting portions.

4. The thermal safety management system according to claim 1, wherein the whole package of heat conducting mechanism comprises a direct cooling plate or a liquid cooling plate, the heat conducting members are sequentially arranged on the direct cooling plate or the liquid cooling plate at intervals, and the heat conducting members are in thermal contact with the direct cooling plate or the liquid cooling plate.

5. The thermal safety management system according to claim 4, wherein the whole package heat conduction mechanism further comprises a liquid inlet assembly and a liquid outlet assembly, a liquid storage chamber is formed in the direct cooling plate, the liquid storage chamber is used for storing liquid for cooling and heat conduction, and the liquid inlet assembly and the liquid outlet assembly are respectively communicated with the liquid storage chamber.

6. The thermal safety management system according to claim 1, wherein a loop heat pipe is disposed in the heat conducting member, and the loop heat pipe is disposed through the heat conducting member.

7. The thermal safety management system according to claim 6, wherein the wall thickness of the loop heat pipe is 0.3mm to 1mm, and the cross-sectional radius of the loop heat pipe is 3mm to 10 mm.

8. The thermal safety management system according to claim 1, wherein the mounting area is capable of accommodating mounting 1-5 of the cells.

9. The thermal safety management system according to claim 1, wherein 2 of the cells are housed in the mounting area.

10. A battery comprising the thermal safety management system of any one of claims 1 to 9 and a plurality of the cells mounted within the mounting area.