Battery cell module for heavy truck and new energy battery

Abstract

The utility model provides a battery cell module for a heavy truck and a new energy battery, and the battery cell module for the heavy truck comprises a plurality of battery cells which are arranged at intervals along a first direction; the two aluminum end plates are respectively positioned on the outer sides of the first battery cell and the last battery cell in the plurality of battery cells arranged along the first direction; the plurality of first flame-retardant plates are respectively inserted into gaps between every two adjacent battery cells and gaps between the aluminum end plates and the battery cells; the cable tie surrounds and binds the plurality of battery cells, the plurality of first flame-retardant plates and the two aluminum end plates; the busbar wire is arranged at the tops of the plurality of battery cells and is electrically connected with all the battery cells; the positive electrode connector is connected with the positive electrode of the battery cell; and the negative electrode connector is connected with the negative electrode of the battery cell. The battery cell module for the heavy truck is low in thermal runaway risk, high in safety and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the field of new energy batteries, and more specifically, to a battery cell module and a new energy battery for heavy trucks. Background Art

[0002] New energy heavy-duty trucks are becoming more and more common and can bring an intelligent experience.

[0003] However, during use, the roads that heavy trucks travel on are relatively complex and prone to bumps. Existing new energy batteries used in heavy trucks are at risk of thermal runaway due to vibration, posing certain safety hazards. Utility Model Content

[0004] The utility model provides a new technical solution for a battery cell module and a new energy battery for heavy trucks, which can at least solve the problem of thermal runaway of new energy batteries for heavy trucks in the prior art.

[0005] According to a first aspect of the present invention, a battery cell module for a heavy truck is provided. The battery cell module for a heavy truck includes:

[0006] A plurality of battery cells, wherein the plurality of battery cells are spaced apart and arranged along a first direction;

[0007] Two aluminum end plates, the two aluminum end plates being respectively located on the outside of a first battery cell and the outside of a last battery cell among the plurality of battery cells arranged along the first direction, the outside of the battery cell being a side of the battery cell away from the adjacent battery cell;

[0008] A plurality of first flame-retardant plates, wherein the plurality of first flame-retardant plates are respectively inserted into the gaps between two adjacent battery cells and into the gaps between the aluminum end plates and the battery cells;

[0009] A cable tie, the cable tie wrapping around and bundling the plurality of battery cells, the plurality of first flame-retardant plates, and the two aluminum end plates;

[0010] A busbar, which is arranged on top of the plurality of battery cells and electrically connected to all the battery cells;

[0011] A positive connector, connected to the positive electrode of the battery cell;

[0012] A negative electrode connector is connected to the negative electrode of the battery cell.

[0013] Furthermore, the battery cell module further includes:

[0014] An insulating plate is covered on top of the busbar.

[0015] Furthermore, a plurality of protrusions are formed on the busbar, and a first through hole is formed on the top of the protrusion;

[0016] A plurality of depressions corresponding to the protrusions are formed on the insulating plate, and a second through hole is formed at the bottom of the depression;

[0017] A plurality of card connectors are inserted into the second through hole and the first through hole in a one-to-one correspondence and are card-engaged with the protrusions, so that the insulating plate and the busbar are tightly connected.

[0018] Furthermore, the battery cell module further includes:

[0019] A second flame-retardant plate is provided on two sides of the battery core that are perpendicular to the first direction.

[0020] According to a second aspect of the present invention, a new energy battery is provided, the new energy battery comprising:

[0021] Multiple battery cell modules are arranged spaced apart along a second direction, with a predetermined gap between adjacent battery cell modules, the second direction is a horizontal direction perpendicular to the first direction, and the battery cell modules are the battery cell modules described above.

[0022] Furthermore, the new energy battery further includes:

[0023] A connecting cable is provided, wherein the connecting cable connects the plurality of battery cell modules in series and connects the positive connector and the negative connector. The battery cells are connected to the positive connector via the connecting cable and to the negative connector via the connecting cable.

[0024] Furthermore, the connecting cable includes:

[0025] a first cable, wherein a first end of the first cable is connected to the battery cell in one of the battery cell modules;

[0026] A second cable, wherein a first end of the second cable is connected to the second end of the first cable, and a second end thereof is connected to the battery cell, the positive connector, or the negative connector of the adjacent battery cell module.

[0027] Furthermore, the second end of the first cable overlaps with the first end of the second cable, a third through hole is formed at the second end of the first cable, and a fourth through hole is formed at the first end of the second cable. The new energy battery further includes:

[0028] A connecting post connected to the top of the aluminum end plate and located below the first and second rows of cables, with a threaded hole formed in the height direction of the connecting post;

[0029] A connecting bolt passes through the third through hole and the fourth through hole and is threadedly connected to the threaded hole of the connecting column.

[0030] Furthermore, the new energy battery further includes:

[0031] A battery management system is provided, wherein the battery management system is connected to the busbars of each of the battery cell modules.

[0032] Furthermore, the new energy battery further includes:

[0033] The bottom plate is connected to and supports all the battery core modules through a thermally conductive adhesive layer.

[0034] According to the battery cell module for heavy-duty trucks of the present invention, multiple battery cells are spaced apart along a first direction. Two aluminum end plates are positioned outside each of the two battery cells at each end of the multiple battery cells. The aluminum end plates provide a buffer for the battery cells, preventing direct external pressure from damaging them. Furthermore, the aluminum end plates are flame-retardant, reducing the risk of thermal runaway in new energy batteries. Multiple first flame-retardant plates are positioned between adjacent battery cells and between the battery cells and the aluminum end plates. These first flame-retardant plates reduce pressure between adjacent battery cells caused by vibration from the new energy battery, as well as pressure between the aluminum end plates and the battery cells, further reducing the risk of thermal runaway. Even if a single battery cell fails, the first flame-retardant plates prevent combustion, enhancing safety. Cable ties bundle all the battery cells, the two aluminum end plates, and all the first flame-retardant plates, forming a relatively independent unit and reducing space usage. Busbars connect the electrodes of each battery cell, forming a circuit path. The positive connector of the battery cell facilitates connection to the positive electrode of an external charging or power component. The negative electrode of the battery cell is connected to the negative electrode connector, making it easy to connect to the negative electrode of an external charging component or power component. This can reduce the risk of thermal runaway of new energy batteries, improve safety, and occupy a small space.

[0035] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0037] Figure 1 This is a structural diagram of a battery module according to an embodiment of the present utility model;

[0038] Figure 2 yes Figure 1 A structural diagram of a battery cell module of an embodiment without the insulating plate;

[0039] Figure 3 It is a structural diagram of an insulating board implemented according to the utility model;

[0040] Figure 4 is a structural diagram of a new energy battery according to an embodiment of the present utility model;

[0041] Figure 5 This is a structural diagram of a new energy battery according to an embodiment of the present utility model without an insulating plate;

[0042] Figure 6 yes Figure 5 A structural diagram from another perspective showing the new energy battery of an embodiment with the insulating plate removed;

[0043] Figure 7 yes Figure 6 Magnified view of area A in .

[0044] Reference numerals:

[0045] 10. Bottom plate;

[0046] 50. Cell module; 51. Cell; 52. First flame-retardant plate; 53. Aluminum end plate; 54. Insulation plate; 541. Depression; 55. Cable tie; 56. Busbar; 561. Protrusion; 57. Card connector; 581. Positive connector; 582. Negative connector.

[0047] 70. Battery management system;

[0048] 91. First row of wires; 92. Second row of wires; 931. Connecting column; 932. Connecting bolt. DETAILED DESCRIPTION

[0049] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0050] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0051] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0052] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0053] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0054] The battery cell module 50 for a heavy truck according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0055] like Figures 1 to 7 As shown, the battery cell module 50 for heavy trucks according to an embodiment of the present invention includes multiple battery cells 51, two aluminum end plates 53, multiple first flame retardant plates 52, cable ties 55, busbars 56, a positive connector 581 and a negative connector 582.

[0056] First, let's describe the battery cells 51 and the two aluminum end plates 53. The multiple battery cells 51 are spaced apart and arranged along a first direction. The two aluminum end plates 53 are located outside the first and last battery cells 51, respectively, of the multiple battery cells 51 arranged along the first direction. The outside of a battery cell 51 is the side of the battery cell 51 facing away from adjacent battery cells 51.

[0057] like Figure 1 As shown, multiple battery cells 51 are spaced apart and arranged along a first direction, with gaps between them. Two aluminum end plates 53 are located on the outside of the first and last battery cells 51 of the multiple battery cells 51, respectively. The battery cells 51 can provide electrical energy for use in heavy trucks. The aluminum end plates 53 can provide a buffer for the battery cells 51 to prevent direct external pressure on the battery cells 51, which may cause damage to the battery cells 51. In addition, the aluminum end plates 53 are flame retardant, reducing the risk of thermal runaway of new energy batteries.

[0058] Next, the first flame retardant plates 52 are described. The first flame retardant plates 52 are respectively inserted into the gaps between two adjacent battery cells 51 and into the gaps between the aluminum end plates 53 and the battery cells 51 .

[0059] like Figure 1 As shown, the first flame retardant plate 52 is arranged between adjacent battery cells 51, and between the aluminum end plate 53 and the battery cell 51, which can reduce the extrusion between adjacent battery cells 51 and between the aluminum end plate 53 and the battery cell 51 caused by the vibration of the new energy battery, and further reduce the risk of thermal runaway. Even if a local battery cell 51 fails, the first flame retardant plate 52 can prevent the faulty battery cell 51 from continuing to burn, thereby improving safety.

[0060] Next, the cable tie 55 will be described. The cable tie 55 surrounds and bundles the plurality of battery cells 51, the plurality of first flame retardant plates 52, and the two aluminum end plates 53.

[0061] like Figure 1As shown, all the battery cells 51 , two aluminum end plates 53 and all the first flame-retardant plates 52 can be bundled together by the cable tie 55 , thereby forming a relatively independent whole and reducing the occupied space.

[0062] Finally, let's discuss the busbar 56, positive connector 581, and negative connector 582. The busbar 56 is installed on top of the battery cells 51 and electrically connects all of them. The positive connector 581 connects to the positive terminal of the battery cell 51. The negative connector 582 connects to the negative terminal of the battery cell 51.

[0063] like Figure 2 As shown, the electrodes of each battery cell 51 are connected by busbar 56 to form a circuit path. The positive connector 581 of the battery cell 51 is convenient for connecting to the positive electrode of an external charging component or a power component. The negative electrode of the battery cell 51 is connected to the negative connector 582 to facilitate connecting to the negative electrode of an external charging component or a power component. The positive connector 581 and the negative connector 582 can be connected to the busbar 56 of a single battery cell module 50, or as shown in FIG. Figure 4 As shown, the positive connector 581 and the negative connector 582 are respectively connected to the battery cell 51 of the first battery module 50 and the battery cell 51 of the last battery module 50 among the multiple battery modules 50 connected in series.

[0064] The battery module 50 for heavy-duty trucks described above comprises multiple battery cells 51 spaced apart and arranged along a first direction. Two aluminum end plates 53 are provided on the outer sides of two battery cells 51 at either end of the multiple battery cells 51. The aluminum end plates 53 act as a buffer for the battery cells 51, preventing direct external pressure on the battery cells 51 that could damage them. Furthermore, the aluminum end plates 53 are flame-retardant, reducing the risk of thermal runaway in the new energy battery. Multiple first flame-retardant plates 52 are provided between adjacent battery cells 51 and between the battery cells 51 and the aluminum end plates 53. The first flame-retardant plates 52 reduce pressure between adjacent battery cells 51 and pressure between the aluminum end plates 53 and the battery cells 51 caused by vibration in the new energy battery, further reducing the risk of thermal runaway. Even if a local battery cell 51 fails, the first flame-retardant plates 52 prevent the faulty battery cell 51 from igniting, improving safety. Cable ties 55 bundle all the battery cells 51, the two aluminum end plates 53, and all the first flame-retardant plates 52, forming a relatively independent whole and reducing space usage. The electrodes of each cell 51 are connected via busbars 56, forming a circuit path. The positive electrode of the cell 51 is connected to a positive connector 581, facilitating connection to the positive electrode of an external charging component or power unit. The negative electrode of the cell 51 is connected to a negative connector 582, facilitating connection to the negative electrode of an external charging component or power unit. This reduces the risk of thermal runaway in new energy batteries, ensuring high safety and minimizing space requirements.

[0065] In some embodiments of the present invention, the battery cell module 50 further includes an insulating plate 54 . The insulating plate 54 covers the top of the busbar 56 .

[0066] like Figure 1 and Figure 2 As shown, an insulating plate 54 is covered on the top of the busbar 56. The insulating plate 54 can reduce external interference with the busbar 56 and protect the busbar 56.

[0067] Furthermore, the busbar 56 is formed with a plurality of protrusions 561, with first through-holes formed at the tops of the protrusions 561. The insulating plate 54 is formed with a plurality of recesses 541 corresponding one-to-one with the protrusions 561, with second through-holes formed at the bottoms of the recesses 541. Multiple snap-in connectors 57 are inserted into the second through-holes and the first through-holes in a one-to-one correspondence, and snap-in with the protrusions 561, thereby tightly connecting the insulating plate 54 to the busbar 56.

[0068] like Figures 1 to 3 As shown, the clamping connector 57 is inserted into the second through-hole in the recess 541 of the insulating plate 54 and the first through-hole of the protrusion 561 of the busbar 56, and is clamped to the protrusion 561 (the bottom end of the clamping connector 57 is thicker and the middle portion is thinner. The bottom end of the clamping connector 57 passes through the first and second through-holes, and the top and bottom ends of the clamping connector 57 are pressed against the top of the protrusion 561 and the bottom of the recess 541). This ensures a tight and stable connection between the insulating plate 54 and the busbar 56, reducing the height of the battery cell module 50 and the space it occupies.

[0069] In some embodiments of the present invention, the battery cell module 50 further includes a second flame retardant plate. The second flame retardant plate is disposed on both sides of the battery cell 51 perpendicular to the first direction.

[0070] The second flame retardant plate can further reduce the risk of thermal runaway combustion of the battery cell 51 and increase safety.

[0071] The new energy battery according to the embodiment of the present utility model is described in detail below with reference to the accompanying drawings.

[0072] like Figures 4 to 7 As shown, the new energy battery according to an embodiment of the present invention includes a plurality of battery cell modules 50 .

[0073] The new energy battery according to the present invention includes a plurality of battery modules 50. The plurality of battery modules 50 are spaced apart and arranged along a second direction with a predetermined gap between adjacent battery modules 50. The second direction is a horizontal direction perpendicular to the first direction.

[0074] There is a predetermined gap between the battery cell modules 50, which can leave enough thermal runaway gas discharge channels to directly reach the explosion-proof valve, thereby enhancing the discharge efficiency of the thermal runaway gas and reducing the risk of thermal runaway.

[0075] Since the battery cell module 50 according to the embodiment of the present invention has the above-mentioned technical effects, the new energy battery according to the embodiment of the present invention also has corresponding technical effects.

[0076] In some embodiments of the present invention, the new energy battery further includes a connecting cable that connects the multiple cell modules 50 in series and connects the positive connector 581 and the negative connector 582 . The cell 51 is connected to the positive connector 581 via the connecting cable and to the negative connector 582 via the connecting cable.

[0077] like Figures 4 to 6 As shown, the battery modules 50 can be easily connected in series by connecting the wiring, and the positive connector 581 and the negative connector 582 can be easily connected.

[0078] Furthermore, the connecting cables include a first cable 91 and a second cable 92. The first end of the first cable 91 is connected to the battery cell 51 in one of the battery modules 50. The first end of the second cable 92 is connected to the second end of the first cable 91, and the second end thereof is connected to the battery cell 51 of the adjacent battery module 50, the positive connector 581, or the negative connector 582.

[0079] like Figure 7 As shown, the first end of a first connecting cable 91 is connected to the positive or negative electrode of a cell 51, and the first end of a second connecting cable 92 is connected to the second end of the first connecting cable 91. The second end of the second connecting cable 92 is connected to the cell 51, the positive connector 581, or the negative connector 582 of an adjacent cell module 50. In other words, the second connecting cable 92 acts as a transition cable, preventing the connection of two cells 51 in adjacent cell modules 50 through a single connecting cable, or preventing the cell 51 from being directly connected to the positive connector 581 or the negative connector 582 through a single connecting cable. This would otherwise result in a single connecting cable being too long, increasing the risk of cable damage and reducing reliability. Furthermore, the first connecting cable of the present invention can be shorter (i.e., the cable connected to the cell 51 can be relatively short), increasing the stability of the connection to the cell 51 and avoiding the cumbersome situation of disassembling the cell module to replace the first connecting cable 91. The second connecting cable 92 is relatively easy to assemble and disassemble.

[0080] Furthermore, the second end of the first wiring 91 overlaps with the first end of the second wiring 92 . The second end of the first wiring 91 is formed with a third through hole, and the first end of the second wiring 92 is formed with a fourth through hole.

[0081] The new energy battery also includes a connecting post 931 and a connecting bolt 932. Connecting post 931 is attached to the top of the aluminum end plate 53, below the first and second cables 91 and 92. Connecting post 931 has a threaded hole formed along its height. Connecting bolt 932 passes through the third and fourth through holes and is threadedly engaged with the threaded hole in connecting post 931.

[0082] like Figure 6 and Figure 7 As shown, the rod of the connecting bolt 932 passes through the third and fourth through-holes of the overlapping first and second cables 91, 92, and is threadedly connected to the threaded hole of the connecting post 931 fixed to the aluminum end plate 53. This secures the second end of the first cable 91, reducing vibration, loosening, and pulling of the first cable 91, improving the stability of the connection between the first cable 91 and the battery cell 51, and preventing damage to the first cable 91. Furthermore, it ensures a stable connection between the first and second cables 91, 92, and prevents loosening of the connection and disconnection.

[0083] In some embodiments of the present invention, the new energy battery further includes a battery management system 70. The battery management system 70 connects the busbars 56 of each battery module.

[0084] like Figure 4 As shown, the battery management system 70 can better monitor and manage the operation of the battery cell module 50.

[0085] In some embodiments of the present invention, the new energy battery further includes a base plate 10. The base plate 10 is connected to and supports all the battery modules through a thermally conductive adhesive layer.

[0086] like Figure 4 As shown, the base plate 10 carries all the battery modules 50, providing stable support and protection for the battery modules 50. The base plate 10 is connected to the battery modules 50 via a thermally conductive adhesive, which ensures a stable connection between the battery modules 50 and the base plate 10. The thermally conductive adhesive can also reduce the contact thermal resistance between the base plate 10 and the battery modules 50, thereby improving the thermal conductivity of the base plate 10 to the battery modules 50.

[0087] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A battery cell module (50) for a heavy truck, characterized in that: The battery core module (50) includes: A plurality of battery cells (51), wherein the plurality of battery cells (51) are arranged spaced apart along a first direction; Two aluminum end plates (53), the two aluminum end plates (53) being respectively located on the outside of a first battery cell (51) and the outside of a last battery cell (51) among the plurality of battery cells (51) arranged along the first direction, the outside of the battery cell (51) being the side of the battery cell (51) away from the battery cell (51) adjacent thereto; A plurality of first flame-retardant plates (52), wherein the plurality of first flame-retardant plates (52) are respectively inserted into the gaps between two adjacent battery cells (51), and into the gaps between the aluminum end plates (53) and the battery cells (51); A cable tie (55), the cable tie (55) surrounds and bundles the plurality of battery cells (51), the plurality of first flame retardant plates (52), and the two aluminum end plates (53); A busbar (56), the busbar (56) being arranged on top of the plurality of battery cells (51) and electrically connected to all of the battery cells (51); A positive connector (581), the positive connector (581) being connected to the positive electrode of the battery cell (51); A negative electrode connector (582), the negative electrode connector (582) is connected to the negative electrode of the battery cell (51).

2. The battery cell module (50) for heavy trucks according to claim 1, characterized in that: The battery core module (50) further includes: An insulating plate (54) is provided, wherein the insulating plate (54) covers the top of the busbar (56).

3. The battery cell module (50) for heavy trucks according to claim 2, characterized in that: A plurality of protrusions (561) are formed on the busbar (56), and a first through hole is formed on the top of each protrusion (561); A plurality of recesses (541) corresponding one-to-one to the protrusions (561) are formed on the insulating plate (54), and a second through hole is formed at the bottom of the recess (541); A plurality of card connectors (57) are inserted into the second through hole and the first through hole in a one-to-one correspondence, and are card-engaged with the protrusion (561), so that the insulating plate (54) and the busbar (56) are tightly connected.

4. The battery cell module (50) for heavy trucks according to claim 1, characterized in that: The battery core module (50) further includes: A second flame retardant plate, the second flame retardant plate being arranged on both sides of the battery core (51) perpendicular to the first direction.

5. A new energy battery, characterized in that: The new energy battery includes: A plurality of battery cell modules (50), wherein the plurality of battery cell modules (50) are spaced apart and arranged along a second direction, and a predetermined gap is provided between adjacent battery cell modules (50), wherein the second direction is a horizontal direction perpendicular to the first direction, and the battery cell module (50) is the battery cell module (50) according to any one of claims 1 to 4.

6. The new energy battery according to claim 5, characterized in that: The new energy battery further includes: A connecting cable is provided, wherein the connecting cable connects a plurality of the battery modules (50) in series and connects the positive connector (581) and the negative connector (582); the battery cell (51) is connected to the positive connector (581) through the connecting cable and is connected to the negative connector (582) through the connecting cable.

7. The new energy battery according to claim 6, characterized in that: The connecting cable includes: a first cable (91), wherein a first end of the first cable (91) is connected to the battery cell (51) in one of the battery cell modules (50); A second cable (92), wherein a first end of the second cable (92) is connected to a second end of the first cable (91), and a second end thereof is connected to the battery cell (51) of the adjacent battery cell module (50), the positive connector (581) or the negative connector (582).

8. The new energy battery according to claim 7, characterized in that: The second end of the first wiring (91) overlaps with the first end of the second wiring (92), the second end of the first wiring (91) is formed with a third through hole, and the first end of the second wiring (92) is formed with a fourth through hole, and the new energy battery further comprises: a connecting post (931), the connecting post (931) being connected to the top of the aluminum end plate (53) and being located below the first row of wires (91) and the second row of wires (92), the connecting post (931) being formed with a threaded hole in its height direction; A connecting bolt (932) passes through the third through hole and the fourth through hole and is threadedly connected to the threaded hole of the connecting column (931).

9. The new energy battery according to claim 5, characterized in that: The new energy battery further includes: A battery management system (70) is provided, wherein the battery management system (70) is connected to the busbars (56) of each of the battery core modules (50).

10. The new energy battery according to claim 5, characterized in that: The new energy battery further includes: A bottom plate (10) is connected to and carries all of the battery core modules via a thermally conductive adhesive layer.

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