CN220065891U - Soaking plate, cylindrical cell battery module and electric vehicle - Google Patents

Abstract

The embodiment of the utility model provides a soaking plate, a cylindrical cell battery module and an electric vehicle, and relates to the field of battery modules. This soaking plate is provided with at least one heat transfer groove, and the heat transfer groove includes two at least main grooves that set up side by side and is used for the intercommunication groove of establishing ties two adjacent main grooves, and the diameter of intercommunication groove is bigger than the diameter of two main grooves, and unnecessary length when the intercommunication groove can be used to the installation of absorption heater strip, and then prevents the heater strip perk, or the heater strip runs out the condition of heat transfer groove to save installation time.

Description

Soaking plate, cylindrical cell battery module and electric vehicle

Technical Field

The utility model relates to the field of battery modules, in particular to a soaking plate, a cylindrical cell battery module and an electric vehicle.

Background

Because the power battery of the electric vehicle is very sensitive to temperature, the charging and the endurance can be seriously affected under the low temperature condition. In order to ensure that the battery can be normally charged under extremely cold conditions, a power battery needs to be added with a thermal management system, and the temperature of the battery cell is maintained in an optimal temperature interval of the battery cell through the thermal management system. Current thermal management schemes are: a snake-shaped flat tube is embedded between the electric core and the electric core, heated liquid is filled in the tube to heat the electric core, a heating film is also attached to the side face or the top of the module, and the electric core is heated by the heating film to generate heat.

However, due to the fact that the installed heating wires are too long, the size of the heating wires is difficult to control, problems that the heating wires are tilted or are unsuitable to install during installation can occur, and excessive installation time is consumed.

Disclosure of Invention

The utility model provides a vapor chamber, a cylindrical cell battery module and an electric vehicle, which can prevent the situation that a heating wire is tilted or the heating wire runs out of the vapor chamber, thereby saving the installation time.

Embodiments of the utility model may be implemented as follows:

in a first aspect, embodiments of the present utility model provide a soaking plate provided with at least one heat exchange groove;

the heat exchange groove comprises at least two main grooves and at least one communication groove, wherein the main grooves are arranged side by side, two adjacent main grooves are communicated through the at least one communication groove, so that all the main grooves are sequentially connected in series along the side-by-side direction, and the diameter of the communication groove is larger than that of the two main grooves.

In an alternative embodiment, the communication groove is composed of a section of straight line groove and two circular arc grooves, the straight line groove is communicated with the two circular arc grooves, and the circular arc grooves are used for being communicated with the main groove.

In an alternative embodiment, the diameter of the circular arc groove is 1.2-1.5 times that of the main groove; the diameter of the straight groove is 2-4 times of that of the main groove.

In an alternative embodiment, the circular arc groove at the left end is connected with the tail end of one of the two adjacent main grooves, and the circular arc groove at the right end is connected with the head end of the other of the two adjacent main grooves.

In an alternative embodiment, in any one of the heat exchange grooves, the main groove at the first and the last is provided with a lug hiding groove.

In an alternative embodiment, the lug concealing groove is at the head end of the main groove at the first and the tail end of the main groove at the last.

In a second aspect, embodiments of the present utility model further provide a cylindrical battery cell module, including: module bottom plate, cylinder electricity core, heater strip and vapor chamber of any one of the preceding embodiments.

The module bottom plate is provided with a circular electric core hole, and the cylindrical electric core is positioned in the circular electric core hole and above the soaking plate; the soaking plate is embedded in the circular cell hole; the heating wire comprises a heating body, and the heating body is embedded in the main groove and the communication groove.

In an optional implementation manner, the module bottom plate is provided with an avoidance hole, the avoidance hole corresponds to the position of the main groove, the module bottom plate is further provided with a sinking groove, the sinking groove corresponds to the position of the communication groove, and the avoidance hole and the sinking groove are both used for avoiding the soaking plate.

In an alternative embodiment, in any one of the heat exchange grooves, the main groove positioned at the first and the last is provided with a connector lug hiding groove;

the heating wire also comprises a heating wire connector lug, the heating wire connector lug is connected with the head end and the tail end of the heating body, and the heating wire connector lug is embedded in the connector lug hiding groove.

In an alternative embodiment, a heat-conducting and insulating adhesive tape is attached to the surface of the heating body, and the adhesive tape is used for fixing the heating body in the main groove and the communication groove, so that the heating body is fixed on the vapor chamber.

In an optional embodiment, the cylindrical battery cell module further includes an insulating protection plate, and the insulating protection plate is embedded in the circular battery cell hole and is located between the cylindrical battery cell and the soaking plate.

In an alternative embodiment, the cylindrical battery cell module further comprises a module upper cover, and the module upper cover is connected with the cylindrical battery cell.

In a third aspect, an embodiment of the present utility model further provides an electric vehicle, including the cylindrical battery cell module according to any one of the foregoing embodiments.

The vapor chamber, the cylindrical cell battery module and the electric vehicle provided by the embodiment of the utility model have the beneficial effects that:

this soaking plate is provided with at least one heat transfer groove, and the heat transfer groove includes two at least main grooves that set up side by side and is used for the intercommunication groove of establishing ties two adjacent main grooves, and the diameter of intercommunication groove is bigger than the diameter of two main grooves, and unnecessary length when the intercommunication groove can be used to the installation of absorption heater strip, and then prevents the heater strip perk, or the heater strip runs out the condition of heat transfer groove to save installation time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electric vehicle according to an embodiment of the present utility model;

fig. 2 is an overall schematic view of a battery module provided in an embodiment of the present utility model;

fig. 3 is an exploded view illustrating the whole battery module according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a vapor chamber provided in an embodiment of the utility model;

FIG. 5 is an enlarged schematic view of a portion of a vapor chamber according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of a module chassis according to an embodiment of the present utility model.

Icon: 1000-a cylindrical cell battery module; 2000-car body; 100-soaking plates; 110-a heat exchange groove; 111-a main groove; 1111-head end; 1112-tail end; 112-a communication groove; 1121-a linear slot; 1122-circular arc groove; 120-hiding the groove of the connector lug; 200-module bottom plate; 210-a circular cell hole; 220-avoiding holes; 230-a sinking groove; 300-a cylindrical cell; 400-heating wires; 410-heating body; 420-heating wire connector lug; 500-insulating protection plates; 600-module upper cover.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

Because the power battery of the electric vehicle is very sensitive to temperature, the charging and the endurance can be seriously affected under the low temperature condition. In order to ensure that the battery can be normally charged under extremely cold conditions, a power battery needs to be added with a thermal management system, and the temperature of the battery cell is maintained in an optimal temperature interval of the battery cell through the thermal management system. Current thermal management schemes are: a snake-shaped flat tube is embedded between the electric core and the electric core, heated liquid is filled in the tube to heat the electric core, a heating film is also attached to the side face or the top of the module, and the electric core is heated by the heating film to generate heat. However, due to the fact that the installed heating wires are too long, the size of the heating wires is difficult to control, problems that the heating wires are tilted or are unsuitable to install during installation can occur, and excessive installation time is consumed.

Based on this, referring to fig. 1, the cylindrical battery cell module 1000 and the electric vehicle provided in the embodiment of the utility model can effectively improve the above-mentioned technical problems.

Fig. 1 is a schematic structural diagram of an electric vehicle according to an embodiment of the present utility model; fig. 2 is an overall schematic diagram of a battery module provided in an embodiment of the present utility model, as shown in fig. 1 and 2, the electric vehicle includes a vehicle body 2000 and a cylindrical battery cell module 1000, the cylindrical battery cell module 1000 is disposed in the vehicle body 2000, and the cylindrical battery cell module 1000 provides electric energy for the vehicle body 2000, so as to realize various functions of the vehicle body 2000.

The structure of the cylindrical battery cell module 1000 will be described in detail below.

Referring to fig. 2 and 3, fig. 3 is an exploded view of fig. 2, and the cylindrical battery cell module 1000 provided in this embodiment includes a soaking plate 100, a module bottom plate 200, a cylindrical battery cell 300, a heating wire 400, an insulation protection plate 500, and a module upper cover 600. The heating wires 400 are fixed in the soaking plate 100, the soaking plate 100 is placed in the module base plate 200, an insulating protection plate 500 is covered above the soaking plate 100, the insulating protection plate 500 is also placed in the module base plate 200, then the cylindrical battery cells 300 are stacked and installed above the insulating protection plate 500, and finally the module upper cover 600 is covered above the cylindrical battery cells 300.

The specific structure of the cylindrical battery cell module 1000 will be described in detail below.

Referring to fig. 3, the power battery has an optimal operating temperature range of 10-45 ℃, and cannot be charged with large current when the temperature is too low, otherwise the battery is damaged, and the amount of electricity that can be discharged at low temperature is reduced. In order to ensure that the battery module can be normally charged under the severe cold condition and is in a state of optimal working temperature, the cylindrical battery cell module 1000 needs to be added with a heating device to heat the cylindrical battery cell 300 under the severe cold condition, the heating device adopted in the embodiment is a heating wire 400, the heating wire 400 comprises a heating body 410 and a heating wire connector lug 420, the heating wire connector lug 420 is connected with the head end and the tail end of the heating body 410, and the heating wire connector lug 420 is used for being connected with external electrical equipment, so that the heating wire 400 is heated. The heat generated by the heating wire 400 heats the soaking plate 100, and thus heats the cylindrical cell 300.

With continued reference to fig. 3, the direct heating of the electrical core may cause the electrical core to be damaged, and in severe cases, fire, explosion, etc. may occur, so the electrical core cannot directly contact the heating wire 400, and therefore, in this embodiment, an insulating protection plate 500 is disposed between the soaking plate 100 and the cylindrical electrical core 300. In order to save the Z-directional space of the battery module and improve the space utilization, the insulating protection plate 500 is embedded into the module bottom plate 200 in this embodiment. In order to facilitate the installation of the insulation protection plate 500, the insulation protection plate 500 is provided with an installation hole, so that the module base plate 200 can be conveniently embedded.

Referring to fig. 3, a circular cell hole 210 is formed in the module base plate 200, a cylindrical cell 300 is embedded in the circular cell hole 210, the cylindrical cell 300 is stacked and mounted above the insulation protection plate 500, the cylindrical cell 300 is fixed on the insulation protection plate 500 by heat conducting glue, and the heat generated by the soaking plate 100 heats the cylindrical cell 300 from bottom to top by the heat conducting glue. A module upper cover 600 is further covered above the cylindrical battery cell 300, and in order to simplify the installation, a circular battery cell hole 210 is also formed in the module upper cover 600, and the cylindrical battery cell 300 is embedded into the circular battery cell hole 210, thereby fixing the whole cylindrical battery cell module 1000.

Referring to fig. 4 in combination with fig. 5, fig. 4 is a schematic diagram of a vapor chamber 100 according to an embodiment of the utility model; fig. 5 is an enlarged view of a portion of the soaking plate 100 according to an embodiment of the present utility model, in which the heating wires 400 are generally installed relatively long, and when the heating wires 400 are installed on the soaking plate 100, the dimensions of the heating wires 400 are difficult to control, and problems such as tilting or improper installation of the heating wires 400 may occur, thereby consuming too much installation time. Therefore, the present embodiment provides a soaking plate 100, where the soaking plate 100 is provided with at least one heat exchange groove 110, the heat exchange groove 110 includes at least two main grooves 111 arranged side by side and at least one communication groove 112, and two adjacent main grooves 111 are communicated through the at least one communication groove 112, so that all main grooves 111 are sequentially connected in series along the side by side direction. The heating body 410 is embedded in the main groove 111 and the communication groove 112. The two ends of the main groove 111 are divided into a head end 1111 and a tail end 1112 along the serial direction of the main groove 111.

With continued reference to fig. 4, and with reference to fig. 5, the communication groove 112 is formed by a section of straight groove 1121 and two circular grooves 1122, the straight groove 1121 communicates with the two circular grooves 1122, and the circular grooves 1122 are used for communicating with the main groove 111. The circular arc groove 1122 at the left end is connected to the tail end 1112 of one of the adjacent two main grooves 111, and the circular arc groove 1122 at the right end is connected to the head end 1111 of the other of the adjacent two main grooves 111.

The diameter of the communication groove 112 is greater than that of the two main grooves 111, and the diameter of the circular arc groove 1122 is 1.2-1.5 times, but may be 1.2 times, 1.3 times, 1.4 times, or 1.5 times that of the main grooves 111, but is not limited thereto; the diameter of the linear groove 1121 is 2-4 times, but not limited to, 2 times, 2.5 times, 3 times, 3.5 times, or 4 times the diameter of the main groove 111. The communication groove 112 can be used for absorbing the excessive length of the heating wire 400 during installation, allowing the long heating wire 400 to bend in the communication groove 112, thereby preventing the heating wire 400 from tilting or the heating wire 400 from escaping from the heat exchange groove 110, and saving the installation time. In this embodiment, eight heat exchange slots 110 are disposed on the vapor chamber 100, and two adjacent heat exchange slots 110 are disposed side by side.

In order to save space of the battery module, in this embodiment, in any one of the heat exchange grooves 110, the main groove 111 located at the first and last is provided with a lug hiding groove 120. The lug concealing groove 120 is at the head end 1111 of the main groove 111 located at the first and the tail end 1112 of the main groove 111 located at the last. The connector lug hiding groove 120 is used for embedding the heating wire connector lug 420, so that a horizontal plane is formed after the upper surface of the vapor chamber 100 is embedded with the heating wire 400, and the insulating protection plate 500 and the cylindrical battery cell 300 are more convenient to install and fix.

With continued reference to fig. 4, and with reference to fig. 3, in order to fixedly mount the heating wire 400 to the vapor chamber 100, a heat conductive insulating adhesive may be poured into the path of the vapor chamber 100 where the heating wire 400 passes, that is, the main groove 111 and the communicating groove 112, and then the heat conductive insulating adhesive may be fixed to the vapor chamber 100. However, the use of glue has a problem of curing time because the installed heating wire 400 is relatively long, and the installation time is wasted because the glue needs to be spread on each path through which the heating wire 400 passes, and the glue needs to be cured. Meanwhile, the heating wire 400 is long, the glue is not cured, the heating wire 400 may deform, and the heating wire 400 may spring out of the main groove 111 and the communicating groove 112 on the soaking plate 100.

In order to solve the above-mentioned problems, in the present embodiment, the heating body 410 is fixed to the soaking plate 100 using a thermally conductive and insulating tape. The heat conductive and insulating adhesive tape is applied to the surfaces of the soaking plate 100, i.e., the main grooves 111 and the communicating grooves 112, along which the heating wires 400 pass, to fix the soaking plate 100. The commonly used insulating tapes include cloth insulating tapes (also called black tapes), plastic insulating tapes (polyvinyl chloride or polyethylene tapes) and polyester insulating tapes (polyester tapes). In the embodiment, the aluminum foil adhesive tape is high-quality pressure-sensitive adhesive, has the characteristics of high viscosity and high temperature resistance, is airtight, and has the function of heat preservation.

Referring to fig. 6, fig. 6 is a schematic diagram of a module bottom plate 200 provided in an embodiment of the present utility model, because the main groove 111 and the communication groove 112 on the soaking plate 100 are concave, the module bottom plate 200 is provided with a avoiding hole 220, the avoiding hole 220 corresponds to the position of the main groove 111, the module bottom plate 200 is further provided with a sinking groove 230, the sinking groove 230 corresponds to the position of the communication groove 112, and the avoiding hole 220 and the sinking groove 230 are both used for avoiding the soaking plate 100, so that the soaking plate 100 is embedded in the module bottom plate 200, and the Z-direction space of the whole cylindrical battery cell module 1000 is further saved.

According to the cylindrical battery cell module 1000 provided in this embodiment, the working principle of the cylindrical battery cell module 1000 is as follows:

in order to ensure that the cylindrical battery cell module 1000 can be normally charged under the severe cold condition, so that the cylindrical battery cell module 1000 is in an optimal working temperature state, the cylindrical battery cell module 1000 comprises a soaking plate 100 and a heating wire 400, the soaking plate 100 is provided with at least one heat exchange groove 110, the heat exchange groove 110 comprises at least two main grooves 111 which are arranged side by side and at least one communication groove 112, and two adjacent main grooves 111 are communicated through the at least one communication groove 112, so that all the main grooves 111 are sequentially connected in series along the side by side direction, the diameter of the communication groove 112 is larger than that of the two main grooves 111, and the two adjacent heat exchange grooves 110 are arranged side by side. In any one of the heat exchange grooves 110, the first and last main grooves 111 are provided with lug hiding grooves 120. The heater wire 400 includes a heater 410 and a heater wire connector 420, the heater 410 is embedded in the main groove 111 and the communication groove 112, and the heater wire connector 420 is embedded in the connector hidden groove 120. The heating wire connector lug 420 is used for being connected with external electrical equipment, so that heating of the heating wire 400 is achieved, the soaking plate 100 is heated by heat generated by the heating wire 400, and the cylindrical battery cell 300 is heated by heat on the soaking plate 100 from bottom to top through heat conducting glue.

In summary, the soaking plate 100 is provided with at least one heat exchange groove 110, the heat exchange groove 110 includes at least two main grooves 111 and at least one communication groove 112, two adjacent main grooves 111 are communicated through at least one communication groove 112, so that all main grooves 111 are sequentially connected in series along the side-by-side direction, the diameter of the communication groove 112 is larger than that of two main grooves 111, the communication groove 112 can be used for absorbing the redundant length of the heating wire 400 during installation, and further preventing the heating wire 400 from tilting, or the heating wire 400 runs out of the heat exchange groove 110, thereby saving the installation time.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model.

Claims (10)

1. A soaking plate, characterized in that the soaking plate (100) is provided with at least one heat exchange groove (110);

the heat exchange groove (110) comprises at least two main grooves (111) and at least one communication groove (112), wherein the main grooves (111) are arranged side by side, two adjacent main grooves (111) are communicated through the at least one communication groove (112), all the main grooves (111) are sequentially connected in series along the side-by-side direction, and the diameter of the communication groove (112) is larger than that of the two main grooves (111).

2. The vapor chamber according to claim 1, wherein the communication groove (112) is composed of a segment of straight groove (1121) and two circular arc grooves (1122), the straight groove (1121) communicates with the two circular arc grooves (1122), and the circular arc grooves (1122) are used for communicating with the main groove (111).

3. A vapor chamber according to claim 2, characterized in that the diameter of the circular arc groove (1122) is 1.2-1.5 times the diameter of the main groove (111); the diameter of the straight groove (1121) is 2-4 times that of the main groove (111).

4. The vapor chamber according to claim 2, wherein the circular arc groove (1122) at the left end is connected to the tail end (1112) of one of the main grooves (111) among the adjacent two main grooves (111), and the circular arc groove (1122) at the right end is connected to the head end (1111) of the other of the adjacent two main grooves (111).

5. A soaking plate according to claim 1, characterized in that in any one of the heat exchange grooves (110), the main groove (111) located at the first and the last is provided with a lug hiding groove (120).

6. A soaking plate according to claim 5, characterized in that the lug hiding groove (120) is at the head end (1111) of the main groove (111) located at the first and the tail end (1112) of the main groove (111) located at the last.

7. A cylindrical cell battery module, characterized by comprising a module base plate (200), a cylindrical cell (300), a heating wire (400) and the soaking plate (100) of claim 1;

a circular cell hole (210) is formed in the module base plate (200), and the cylindrical cell (300) is positioned in the circular cell hole (210) and above the soaking plate (100); the soaking plate (100) is embedded in the circular cell hole (210); the heating wire (400) comprises a heating body (410), and the heating body (410) is embedded in the main groove (111) and the communication groove (112).

8. The cylindrical battery cell module according to claim 7, wherein the module bottom plate (200) is provided with an avoidance hole (220), the avoidance hole (220) corresponds to the position of the main groove (111), the module bottom plate (200) is further provided with a sinking groove (230), the sinking groove (230) corresponds to the position of the communication groove (112), and the avoidance hole (220) and the sinking groove (230) are both used for avoiding the soaking plate (100).

9. The cylindrical cell battery module according to claim 7, wherein the main grooves (111) located at the first and last of any one of the heat exchange grooves (110) are provided with lug hiding grooves (120);

the heating wire (400) further comprises a heating wire connector lug (420), the heating wire connector lug (420) is connected with the head end and the tail end of the heating body (410), and the heating wire connector lug (420) is embedded in the connector lug hiding groove (120).

10. An electric vehicle characterized by comprising a cylindrical cell battery module (1000) according to any one of claims 7-9.