Battery polarity module, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a battery polarity module, a battery pack and electric equipment, and relates to the technical field of battery management systems. The battery polarity module is used in a battery pack, and comprises a shell; the conductive part is connected with the shell; one side of the heat conduction part is connected with the electric conduction part, the other side of the heat conduction part is used for being connected with a cold plate of the battery pack, and the heat conduction part is used for transferring heat generated by the electric conduction part to the cold plate. The battery polarity module, the battery pack and the electric equipment can prevent the conductive performance of the conductive piece from being influenced by high temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery management systems, and in particular to a battery polarity module, a battery pack and an electrical equipment. BACKGROUND

[0002] The battery polarity module includes a positive module and a negative module. The positive module is used for power distribution and protection of the positive electrode of the battery. The negative module is used for power distribution and protection of the negative electrode of the battery.

[0003] The positive module and the negative module of the related technology each include a shell and a copper bar. The copper bar is arranged in the shell, and the copper bar is used for electrically connecting a plurality of electrical elements in the shell.

[0004] However, when high current passes through the copper bar, the copper bar will be high temperature, which will accelerate the oxidation and aging of the copper bar, thereby reducing the conductivity of the copper bar. TECHNICAL PROBLEM

[0005] Embodiments of the present application provide a battery polarity module, a battery pack and an electrical equipment to solve the technical problem that the copper bar of the related technology is oxidized and aged due to high temperature, thereby reducing the conductivity of the copper bar.

[0006] In a first aspect, embodiments of the present application provide a battery polarity module for use in a battery pack, comprising:

[0007] a shell;

[0008] a conductive part connected with the shell;

[0009] a heat-conducting part, one side of the heat-conducting part being connected with the conductive part, and the other side of the heat-conducting part being used for connecting with a cold plate of the battery pack, the heat-conducting part being used for transferring heat generated by the conductive part to the cold plate.

[0010] In some embodiments, an accommodating groove is arranged on an outer wall of the shell, and the accommodating groove is used for accommodating the conductive part.

[0011] In some embodiments, the accommodating groove has an anti-falling part arranged on an inner side wall of the accommodating groove, and the anti-falling part is used for preventing the conductive part from being separated from the accommodating groove.

[0012] In some embodiments, the anti-falling part includes an anti-falling groove arranged on the inner side wall of the accommodating groove, and the conductive part is provided with an anti-falling block matched with the anti-falling groove.

[0013] In some embodiments, an insulating part is further included, one side of the insulating part being connected with the heat-conducting part, and the other side of the insulating part being connected with the conductive part.

[0014] In some embodiments, the shell comprises a lower shell and an upper cover, the lower shell is provided with a connecting piece, the connecting piece is used for detachably connecting the upper cover with the lower shell.

[0015] In some embodiments, the upper cover is provided with a card interface, the connecting piece is used for clamping or unclamping the card interface to detachably connect the upper cover with the lower shell.

[0016] In some embodiments, a main positive relay is further included, the lower shell has a first plug-in slot, and the main positive relay is used for being plugged into the first plug-in slot.

[0017] In some embodiments, a pre-charge resistor is further included, the pre-charge resistor is used for being plugged into the first plug-in slot.

[0018] In some embodiments, the main positive relay has a first electrically-conductive rod, the shell and the electrically-conductive member are both provided with a first electrically-conductive hole, the first electrically-conductive rod is arranged in the first electrically-conductive hole of the shell, and the first electrically-conductive rod is connected with the first electrically-conductive hole of the electrically-conductive member to electrically connect the main positive relay with the electrically-conductive member.

[0019] In some embodiments, the pre-charge resistor has a second electrically-conductive rod, the shell and the electrically-conductive member are both provided with a second electrically-conductive hole, the second electrically-conductive rod is arranged in the second electrically-conductive hole of the shell, and the second electrically-conductive rod is connected with the second electrically-conductive hole of the electrically-conductive member to electrically connect the pre-charge resistor with the electrically-conductive member.

[0020] In some embodiments, a main fuse is further included, the lower shell has a second plug-in slot, and the main fuse is used for being plugged into the second plug-in slot.

[0021] In some embodiments, the main fuse is provided with an electrically-conductive plate on both sides, the shell and the electrically-conductive member are both provided with a third electrically-conductive hole, the electrically-conductive plate is arranged in the third electrically-conductive hole of the shell, and the electrically-conductive plate is connected with the third electrically-conductive hole of the electrically-conductive member to electrically connect the main fuse with the electrically-conductive member.

[0022] In some embodiments, a circuit board is further included, the circuit board is provided with a plurality of electrically-conductive holes, the main positive relay and the pre-charge resistor have a plurality of pins, and the plurality of pins are arranged in the plurality of electrically-conductive holes one by one to electrically connect the circuit board with the main positive relay and the pre-charge resistor.

[0023] In the second aspect, the embodiments of the present application provide a battery pack, which comprises a frame and the battery polarity module arranged on the frame.

[0024] In a third aspect, the embodiments of the present application provide a power consumption device, comprising a body and the battery pack arranged on the body.

[0025] The embodiments of the present application provide a battery polarity module, a battery pack and a power consumption device. When the current passes through the conductive part to cause the conductive part to heat, the battery polarity module provided by the present application is connected with the conductive part on one side of the heat conduction part and connected with the cold plate on the other side of the heat conduction part, so that the heat generated by the conductive part can be transmitted to the cold plate through the heat conduction part, thereby cooling the conductive part by using the cold plate of the battery pack, preventing the conductive part from being oxidized and aged due to high temperature, thereby indirectly ensuring the conductive performance of the conductive part. And by using the cold plate of the battery pack to cool the conductive part, an additional cooling mechanism does not need to be arranged on the shell, thereby indirectly reducing the space occupation of the battery polarity module and reducing the production and manufacturing cost of the additional cooling mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0027] Figure 1 A structural schematic diagram of the battery polarity module provided by the present application is shown in the figure.

[0028] Figure 2 An exploded structural schematic diagram of the shell, the insulating part and the heat conduction part of the battery polarity module provided by the present application is shown in the figure.

[0029] Figure 3 A structural schematic diagram of the battery polarity module provided by the present application is shown in the figure. Figure 2 A structural schematic diagram of the accommodating groove in the figure is shown in the figure.

[0030] Figure 4 A partial structural schematic diagram of the second power connection rod and the second power connection hole of the battery polarity module provided by the present application is shown in the figure.

[0031] Figure 5 An enlarged view of part A in the figure is shown in the figure. Figure 1

[0032] Figure 6 A structural schematic diagram of the circuit board, the main positive relay, the pre-charging module and the main fuse of the battery polarity module provided by the present application is shown in the figure.

[0033] Figure 7 A structural schematic diagram of the first plug-in groove and the second plug-in groove of the battery polarity module provided by the present application is shown in the figure.

[0034] Explanation of reference signs:

[0035] 100, shell; 110, accommodating groove; 111, anti-falling part

[0036] ​120, lower shell; 121, connecting piece; 122, inclined surface; 123, first insertion slot; 124, second insertion slot;

[0037] 130, upper cover; 131, card interface;

[0038] 140, partition plate;

[0039] 200, conductive piece; 210, first copper bar; 220, second copper bar; 230, third copper bar; 240, anti-dropping block;

[0040] 250, first power connection hole; 260, second power connection hole; 270, third power connection hole;

[0041] 300, heat-conducting piece;

[0042] 400, insulating piece;

[0043] 500, main positive relay; 510, first power connection rod;

[0044] 600, pre-charge resistor; 610, second power connection rod;

[0045] 700, main fuse; 710, power connection plate;

[0046] 800, circuit board; 810, conductive hole; 820, pin; 830, socket; 840, copper wire.

[0047] The specific embodiments of the present application have been shown in the above-described drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The same numbers are used in different drawings to represent the same or similar elements. The embodiments described in the following exemplary embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.

[0049] The positive electrode module and the negative electrode module of the related art each include a housing and a copper bar, the copper bar being disposed in the housing, and the copper bar being used to electrically connect a plurality of electrical elements in the housing.

[0050] The positive electrode module includes a main positive relay, a pre-charge resistor and a main fuse. The main positive relay controls the connection between the positive electrode of the battery and the external circuit, ensures smooth transmission of current during normal charging and discharging, and prevents current leakage in non-working state. The pre-charge resistor pre-charges the bus capacitor through the pre-charge resistor when the system is powered on, balances the voltage, prevents inrush current, and protects the circuit and the battery. The main fuse melts quickly to cut off the current when an overload or short circuit occurs in the circuit, protecting the circuit and the battery from damage.

[0051] The negative electrode module includes a main negative relay, a current sensor and a main fuse. The main negative relay controls the connection between the negative electrode of the battery and the external circuit, ensures smooth transmission of current during normal charging and discharging, and prevents current leakage in non-working state. The current sensor measures the charging and discharging current of the battery and feeds back the current signal to the battery management system, ensuring that the battery works within a safe range, preventing overcharging and overdischarging, and prolonging the service life of the battery. The main fuse melts quickly to cut off the current when an overload or short circuit occurs in the circuit, protecting the circuit and the battery from damage.

[0052] However, when high current passes through the copper bar, the copper bar will be heated to a high temperature, which will accelerate the oxidation and aging of the copper bar, thereby reducing the conductivity of the copper bar.

[0053] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described again in some examples. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0054] In combination with Figure 1 and Figure 2 , the embodiments of the present application provide a battery polarity module for use in a battery pack, comprising:

[0055] a housing 100;

[0056] a conductive part 200 connected to the housing 100;

[0057] a heat-conducting part 300, one side of the heat-conducting part 300 being connected to the conductive part 200, and the other side of the heat-conducting part 300 being used to connect to a cold plate of the battery pack, the heat-conducting part 300 being used to transfer heat generated by the conductive part 200 to the cold plate.

[0058] In the embodiment, the conductive member 200 includes a first copper bar 210, a second copper bar 220 and a third copper bar 230, the first copper bar 210, the second copper bar 220 and the third copper bar 230 are all arranged in a rectangular shape, the lengths of the rectangular first copper bar 210, the second copper bar 220 and the third copper bar 230 decrease in turn, the second copper bar 220 and the third copper bar 230 are arranged on the same straight line, and the first copper bar 210 is arranged on one side of the second copper bar 220 and the third copper bar 230; one end of the second copper bar 220 extends to the outside of the shell 100 and is fixed on the shell 100 by a bolt, and in other embodiments, the conductive member 200 can also be a conductive member 200 made of other metals.

[0059] In the embodiment, the heat conduction member 300 is a heat conduction pad, one side of the heat conduction pad is connected with the first copper bar 210, the second copper bar 220 and the third copper bar 230 at the same time, and the heat conduction pad can be made of a metal material such as an aluminum plate or a copper plate; in other embodiments, the heat conduction pad can also be made of a ceramic material such as aluminum oxide, or a carbon-based material such as graphite.

[0060] In the application, when the current passes through the conductive member 200 to cause the conductive member 200 to heat, because one side of the heat conduction member 300 is connected with the conductive member 200 and the other side of the heat conduction member 300 is connected with the cold plate, the heat generated by the conductive member 200 can be transmitted to the cold plate through the heat conduction member 300, so that the cold plate of the battery pack is used to cool and cool the conductive member 200, thereby preventing the conductive member 200 from being oxidized and aged due to high temperature, thereby indirectly ensuring the conductivity of the conductive member 200; and by using the cold plate of the battery pack to cool and cool the conductive member 200, it is not necessary to provide an additional cooling mechanism on the shell 100, thereby indirectly reducing the space occupation of the battery polarity module, and reducing the production and manufacturing cost of the additional cooling mechanism.

[0061] In combination with Figures 1 to 3 , the outer wall of the shell 100 is provided with a containing groove 110, and the containing groove 110 is used to contain the conductive member 200.

[0062] In the embodiment, the containing groove 110 is provided with three, and the three containing grooves 110 are arranged in one-to-one correspondence with the first copper bar 210, the second copper bar 220 and the third copper bar 230, and the containing groove 110 is arranged in cooperation with the rectangular first copper bar 210, the second copper bar 220 and the third copper bar 230.

[0063] In other embodiments, the shapes of the first copper bar 210, the second copper bar 220 and the third copper bar 230 and the containing groove 110 can be adjusted adaptively as needed.

[0064] The application adopts the arrangement of the accommodating groove 110, so that the first copper bar 210, the second copper bar 220 and the third copper bar 230 can be embedded on the outer bottom wall of the shell 100 through the accommodating groove 110, thereby reducing the space occupation of the shell 100 driving the first copper bar 210, the second copper bar 220 and the third copper bar 230.

[0065] In combination Figures 2 to 4 The accommodating groove 110 has an anti-disengagement part 111 for preventing the conductive part 200 from disengaging from the accommodating groove 110.

[0066] In the embodiment, the shell 100 is a plastic part, and the shell 100 is made by an integral injection molding process.

[0067] When the shell 100 is injection molded, the conductive part 200 can be directly injection molded in the accommodating groove 110, so that the conductive part 200 does not need to be additionally fixed by other fixed mechanisms which need manual fixing, thereby improving the firmness of the connection between the first copper bar 210, the second copper bar 220 and the third copper bar 230 and the shell 100.

[0068] In combination Figures 2 to 4 The anti-disengagement part 111 includes an anti-disengagement groove arranged on the inner side wall of the accommodating groove 110, and the conductive part 200 is provided with an anti-disengagement block 240 matched with the anti-disengagement groove.

[0069] In the embodiment, the anti-disengagement groove is arranged along the circumference of the inner side wall of the accommodating groove 110, the first copper bar 210, the second copper bar 220 and the third copper bar 230 are all provided with the anti-disengagement block 240, the anti-disengagement block 240 is arranged along the circumference of the first copper bar 210, the second copper bar 220 and the third copper bar 230, the cross section of the accommodating groove 110 and the anti-disengagement groove is in the shape of “T”, and the first copper bar 210, the second copper bar 220 and the third copper bar 230 are arranged in combination with the “T”-shaped accommodating groove 110 and anti-disengagement groove.

[0070] In other embodiments, the cross section of the accommodating groove 110 and the anti-disengagement groove can also be arranged in the shape of dovetail, and the first copper bar 210, the second copper bar 220 and the third copper bar 230 are arranged in combination with the dovetail-shaped accommodating groove 110 and anti-disengagement groove.

[0071] When the shell 100 is injection molded, the first copper bar 210, the second copper bar 220 and the third copper bar 230 drive the anti-disengagement block 240 to be directly fixed in the accommodating groove 110 and the anti-disengagement groove, so that the anti-disengagement block 240 and the anti-disengagement groove prevent the first copper bar 210, the second copper bar 220 and the third copper bar 230 from disengaging from the accommodating groove 110, thereby preventing the first copper bar 210, the second copper bar 220 and the third copper bar 230 from disengaging from the shell 100, and improving the firmness of the fixing of the first copper bar 210, the second copper bar 220 and the third copper bar 230 on the shell 100.

[0072] In combinationFigures 1 to 4 The battery polarity module further comprises an insulating piece 400, one side of the insulating piece 400 is connected with the heat-conducting piece 300, and the other side of the insulating piece 400 is connected with the electrically-conducting piece 200.

[0073] In this embodiment, the insulating piece 400 is an insulating film made of inorganic or organic insulating material; the insulating piece 400 is pasted with the electrically-conducting piece 200 and the outer bottom wall of the shell 100; the area of the insulating piece 400 is the same as that of the heat-conducting piece 300; the heat-conducting piece 300 is also pasted with the insulating piece 400; and the area of the insulating piece 400 and the heat-conducting piece 300 is the same as that of the outer bottom wall of the shell 100.

[0074] In this embodiment, the shell 100 is connected with the cold plate through bolts, so that the shell 100 can extrude the insulating piece 400 and the heat-conducting piece 300 between the shell 100 and the cold plate, thereby improving the contact strength between the insulating piece 400 and the heat-conducting piece 300 and the electrically-conducting piece 200 and the cold plate, indirectly improving the heat transfer efficiency from the electrically-conducting piece 200 to the cold plate, and indirectly improving the cooling efficiency of the cold plate on the electrically-conducting piece 200.

[0075] By adopting the insulating piece 400, the insulating piece 400 can effectively prevent electrical short circuit between the electrically-conducting piece 200 and the heat-conducting piece 300, and ensure the safe operation of the circuit. In high-voltage and large-current applications, electrical insulation is particularly important, which can avoid equipment damage and safety accidents caused by short circuit. Moreover, the insulating piece 400 can prevent electric shock accidents when an operator touches the heat-conducting piece 300, and indirectly improve the overall safety of the battery pack.

[0076] In combination with Figure 1 and Figure 5 , the shell 100 comprises a lower shell 120 and an upper cover 130, the lower shell 120 is provided with a connecting piece 121, and the connecting piece 121 is used to detachably connect the upper cover 130 with the lower shell 120.

[0077] The upper cover 130 is provided with a clamping interface 131, and the connecting piece 121 is used to clamp or unclamp the clamping interface 131, so as to detachably connect the upper cover 130 with the lower shell 120.

[0078] In the embodiment, the accommodating groove 110 is arranged on the outer bottom wall of the lower shell 120; the connecting piece 121 comprises a plurality of clamping blocks which are distributed along the outer peripheral wall of the lower shell 120, the top wall of the clamping block is the inclined surface 122, and the clamping interface 131 is provided with a plurality of clamping interfaces 131 which are arranged along the circumference of the upper cover 130; when the upper cover 130 is moved towards the lower shell 120, the inclined surface 122 can abut against the lower edge of the upper cover 130, so that the clamping block is moved into the interior of the upper cover 130 through the inclined surface 122, when the clamping block is moved into the clamping interface 131, the bottom wall of the clamping block can abut against the bottom wall of the clamping interface 131, so that the upper cover 130 is fixed with the lower shell 120; when it is needed to remove the upper cover 130, the clamping block is moved out of the clamping interface 131 by driving the side wall of the upper cover 130 away from the lower shell 120.

[0079] The shell 100 comprises the lower shell 120 and the upper cover 130, so that the upper cover 130 and the lower shell 120 are separated, thereby facilitating the installation and dismounting of the electrical elements in the lower shell 120, and facilitating the replacement of the electrical elements in the shell 100 when the electrical elements in the shell 100 are damaged.

[0080] In combination Figures 2 to 7 The battery polarity module further comprises a main positive relay 500, and the lower shell 120 is provided with a first plug-in groove 123, and the main positive relay 500 is used for being plugged into the first plug-in groove 123.

[0081] The battery polarity module further comprises a pre-charging resistor 600, and the pre-charging resistor 600 is used for being plugged into the first plug-in groove 123.

[0082] In the embodiment, the shell 100 is provided with a partition plate 140 which is integrally arranged with the shell 100, and the two sides of the partition plate 140 are connected with the two opposite sides of the lower shell 120 respectively; and the first plug-in groove 123 is formed between one side of the partition plate 140 and the shell 100.

[0083] The first plug-in groove 123 is arranged, so that when it is needed to install the main positive relay 500 and the pre-charging resistor 600, the main positive relay 500 and the pre-charging resistor 600 can be directly plugged into the first plug-in groove 123 to realize the installation of the main positive relay 500 and the pre-charging resistor 600, the installation mode of the main positive relay 500 and the pre-charging resistor 600 is convenient and simple, and the convenience of the operator in installing the main positive relay 500 and the pre-charging resistor 600 is improved.

[0084] In other embodiments, when the battery polarity module is a negative polarity module, the negative polarity module comprises a main negative relay and a current sensor, and the main negative relay and the current sensor can also be connected with the lower shell 120 in a plug-in mode.

[0085] In combination Figures 2 to 7The main positive relay 500 has a first connecting rod 510, the shell 100 and the conductive part 200 are both provided with a first connecting hole 250, the first connecting rod 510 is arranged in the first connecting hole 250 of the shell 100, and the first connecting rod 510 is connected with the first connecting hole 250 of the conductive part 200, so that the main positive relay 500 is electrically connected with the conductive part 200.

[0086] In the embodiment, the first connecting rod 510 is provided with two, the shell 100 is provided with two first connecting holes 250, the first copper bar 210 is provided with one first connecting hole 250, and the second copper bar 220 is provided with one first connecting hole 250. One of the first connecting rods 510 is arranged in the first connecting hole 250 of the first copper bar 210, and the other first connecting rod 510 is arranged in the first connecting hole 250 of the second copper bar 220. When the first connecting rod 510 is arranged in the first connecting hole 250, the first connecting rod 510 and the first connecting hole 250 are welded by laser welding, so as to realize the electrical connection between the first connecting rod 510 and the first connecting hole 250. The cross section of the first connecting rod 510 is circular, and the first connecting hole 250 is matched with the circular first connecting rod 510.

[0087] By adopting the first connecting rod 510 and the first connecting hole 250, when the main positive relay 500 is inserted into the first insertion slot 123, the main positive relay 500 can drive the first connecting rod 510 to be inserted into the first connecting hole 250, so that the main positive relay 500 and the conductive part 200 are electrically connected. It is not necessary to use a flexible line to connect the main positive relay 500 and the conductive part 200, so that the main positive relay 500 and the shell 100 can be automatically assembled, and the assembly efficiency is improved.

[0088] In combination Figures 2 to 7 The pre-charge resistor 600 has a second connecting rod 610, the shell 100 and the conductive part 200 are both provided with a second connecting hole 260, the second connecting rod 610 is arranged in the second connecting hole 260 of the shell 100, and the second connecting rod 610 is connected with the second connecting hole 260 of the conductive part 200, so that the pre-charge resistor 600 is electrically connected with the conductive part 200.

[0089] In the embodiment, the second electrically-conductive rods 610 are provided in two, the shell 100 is provided with two second electrically-conductive holes 260, the first copper bar 210 is provided with one second electrically-conductive hole 260, and the second copper bar 220 is provided with one second electrically-conductive hole 260. One of the second electrically-conductive rods 610 is arranged in the second electrically-conductive hole 260 of the first copper bar 210, and the other second electrically-conductive rod 610 is arranged in the second electrically-conductive hole 260 of the second copper bar 220. After the second electrically-conductive rods 610 are arranged in the second electrically-conductive holes 260, the second electrically-conductive rods 610 and the second electrically-conductive holes 260 are welded by laser welding, so as to realize the electrical connection between the second electrically-conductive rods 610 and the second electrically-conductive holes 260. The second electrically-conductive rods 610 are circular in cross section, and the second electrically-conductive holes 260 are arranged in cooperation with the circular second electrically-conductive rods 610.

[0090] By arranging the second electrically-conductive rods 610 and the second electrically-conductive holes 260, when the pre-charging resistor 600 is inserted into the first insertion slot 123, the pre-charging resistor 600 can drive the second electrically-conductive rods 610 to be inserted into the second electrically-conductive holes 260, so as to realize the electrical connection between the pre-charging resistor 600 and the conductive member 200. The pre-charging resistor 600 and the conductive member 200 are connected without using a flexible line, so that the pre-charging resistor 600 and the shell 100 can be automatically assembled, and the assembly efficiency is improved.

[0091] In combination Figures 2 to 7 The battery polarity module further comprises a main fuse 700, and the lower shell 120 is provided with a second insertion slot 124. The main fuse 700 is arranged in the second insertion slot 124.

[0092] In the embodiment, the second insertion slot 124 is formed between the other side of the partition plate 140 and the shell 100.

[0093] By arranging the second insertion slot 124, when the main fuse 700 needs to be installed, the main fuse 700 can be directly inserted into the second insertion slot 124 to realize the installation of the main fuse 700. The installation mode of the main fuse 700 is convenient and simple, and the convenience of the operator in installing the main fuse 700 is improved.

[0094] In combination Figures 2 to 7 The main fuse 700 is provided with electrically-conductive plates 710 on both sides, the shell 100 and the conductive member 200 are provided with third electrically-conductive holes 270, the electrically-conductive plates 710 are arranged in the third electrically-conductive holes 270 of the shell 100, and the electrically-conductive plates 710 are connected with the third electrically-conductive holes 270 of the conductive member 200, so as to electrically connect the main fuse 700 with the conductive member 200.

[0095] In the embodiment, the power connection plates 710 are connected to the two sides of the main fuse 700 by bolts, one of the power connection plates 710 extends out of the shell 100 and is fixed on the shell 100 by bolts; the power connection plates 710 are provided in two, the two power connection plates 710 are arranged on the two sides of the main fuse 700 respectively, the shell 100 is provided with two third power connection holes 270, the second copper bar 220 is provided with one third power connection hole 270, and the third copper bar 230 is provided with one third power connection hole 270; one of the power connection plates 710 is arranged in the third power connection hole 270 of the second copper bar 220, and the other power connection plate 710 is arranged in the third power connection hole 270 of the third copper bar 230; after the power connection plate 710 is arranged in the third power connection hole 270, the power connection plate 710 and the third power connection hole 270 are welded by laser welding, so as to realize the electrical connection between the power connection plate 710 and the third power connection hole 270; the third power connection hole 270 is arranged in cooperation with the power connection plate 710.

[0096] By adopting the arrangement of the power connection plates 710 and the third power connection holes 270, when the main fuse 700 is inserted into the second insertion slot 124, the main fuse 700 can drive the power connection plates 710 to be inserted into the third power connection holes 270, so that the electrical connection between the main fuse 700 and the conductive part 200 is realized, without using a flexible line to connect the main fuse 700 and the conductive part 200, so that the automatic assembly between the main fuse 700 and the shell 100 can be realized, and the assembly efficiency is improved.

[0097] In combination Figures 2 to 7 The battery polarity module further comprises a circuit board 800, the circuit board 800 is provided with a plurality of conductive holes 810, the main positive relay 500 and the pre-charge resistor 600 have a plurality of pins 820, the plurality of pins 820 are arranged in one-to-one correspondence in the plurality of conductive holes 810, so as to electrically connect the circuit board 800 with the main positive relay 500 and the pre-charge resistor 600.

[0098] In the embodiment, the circuit board 800 is provided with six conductive holes 810, the main positive relay 500 is provided with two pins 820, the pre-charge resistor 600 is provided with four pins 820, the circuit board 800 is provided with a socket 830, the upper cover 130 is provided with an opening for exposing the socket 830, the socket 830 and the six conductive holes 810 are provided with copper wires 840 embedded on the circuit board 800, the two pins 820 of the main positive relay 500 are arranged in two of the six conductive holes 810, and the four pins 820 of the pre-charge resistor 600 are arranged in the remaining four of the six conductive holes 810; after the pins 820 and the conductive holes 810 are arranged, the pins 820 and the conductive holes 810 are electrically connected by laser welding, so that the socket 830 can be electrically connected with the main positive relay 500 and the pre-charge resistor 600.

[0099] The circuit board 800 is arranged, when the main positive relay 500 and the pre-charge resistor 600 are plugged into the first plug slot 123, the circuit board 800 is installed on the main positive relay 500 and the pre-charge resistor 600, so that the pins 820 on the main positive relay 500 and the pre-charge resistor 600 are arranged in the conductive holes 810 on the circuit board 800, so that the circuit board 800 can be electrically connected with the main positive relay 500 and the pre-charge resistor 600, without using flexible lines to electrically connect the circuit board 800 with the main positive relay 500 and the pre-charge resistor 600, thereby improving the efficiency of the connection between the main positive relay 500, the pre-charge resistor 600 and the circuit board 800, and preventing the circuit board 800, the main positive relay 500 and the pre-charge resistor 600 from malfunctioning due to incorrect wiring.

[0100] The embodiment of the present application also provides a battery pack, which comprises a frame and the battery polarity module of any of the above embodiments arranged on the frame.

[0101] The specific structure of the battery polarity module has been described in detail in the above embodiments, and will not be repeated here.

[0102] The embodiment of the present application also provides a power consumption device, which comprises a body and the battery pack of any of the above embodiments arranged on the body.

[0103] In the embodiment, the power consumption device is a car, and in other embodiments, the power consumption device can be other devices that need to use a positive module or a negative module.

[0104] The power utilization equipment provided in the application is characterized in that when the battery needs to be assembled in modules, the main positive relay 500 and the pre-charge resistor 600 are inserted into the first insertion slot 123, so that the first electric connection rod 510 on the main positive relay 500 can pass through the first electric connection hole 250 on the shell 100 and the first copper bar 210 and the second copper bar 220, and the first electric connection rod 510 and the first electric connection hole 250 are welded by laser welding; at the same time, the second electric connection rod 610 on the pre-charge resistor 600 can pass through the second electric connection hole 260 on the shell 100 and the first copper bar 210 and the second copper bar 220, and the second electric connection rod 610 and the second electric connection hole 260 are welded by laser welding, so that the main positive relay 500 and the pre-charge resistor 600 are electrically connected with the first copper bar 210 and the second copper bar 220; the main fuse 700 is inserted into the second insertion slot 124, so that the electric connection plate 710 driven by the main fuse 700 passes through the third electric connection hole 270 on the first copper bar 210 and the third copper bar 230, so that the main fuse 700 is electrically connected with the first copper bar 210 and the third copper bar 230; the circuit board 800 is arranged on the main positive relay 500 and the pre-charge resistor 600, so that the pin 820 on the main positive relay 500 and the pre-charge resistor 600 passes through the conductive hole 810, and the pin 820 and the conductive hole 810 are welded by laser welding, so that the main positive relay 500 and the pre-charge resistor 600 are electrically connected with the circuit board 800, without the need of connecting each electric element by a line, thereby improving the assembly efficiency of each electric element and the shell 100; the upper cover 130 is moved towards the lower shell 120, so that the upper cover 130 and the lower shell 120 are fixed by the connecting piece 121, the insulating piece 400 is pasted on the outer bottom wall of the lower shell 120, the heat-conducting piece 300 is pasted on the insulating piece 400, and the shell 100 is fixed on the cold plate of the battery pack by a bolt, so that the insulating piece 400 and the heat-conducting piece 300 are fixed between the conductive piece 200 and the cold plate, so that the heat generated by the conductive piece 200 can be transmitted to the cold plate through the heat-conducting piece 300, thereby cooling the conductive piece 200 by the cold plate of the battery pack, preventing the conductive piece 200 from being oxidized and aged due to high temperature, and indirectly improving the conductivity of the conductive piece 200.

[0105] Finally, it should be noted that: other embodiments of the utility model will be easily thought of by those skilled in the art after considering the specification and practicing the utility model disclosed herein. The utility model aims at covering any variations, uses or adaptability of the utility model, which follow the general principles of the utility model and include the common knowledge or conventional technical means in the technical field of the utility model not disclosed by the utility model, and is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is only limited by the appended claims.

Claims

1. A battery polarity module for use in a battery pack, characterized in that, The application relates to a shell (100), a conductive part (200) connected with the shell (100), a heat-conducting part (300) with one side connected with the conductive part (200) and the other side used for connecting with a cold plate of a battery pack, and the heat-conducting part (300) is used for transferring heat generated by the conductive part (200) to the cold plate. An accommodating groove (110) is arranged on the outer wall of the shell (100) and used for accommodating the conductive part (200). The accommodating groove (110) is provided with an anti-falling part (111) used for preventing the conductive part (200) from being separated from the accommodating groove (110). The anti-falling part (111) comprises an anti-falling groove arranged on the inner side wall of the accommodating groove (110), and the conductive part (200) is provided with an anti-falling block (240) matched with the anti-falling groove.

2. The battery polarity module of claim 1, wherein, The application further comprises an insulating part (400) with one side connected with the heat-conducting part (300) and the other side connected with the conductive part (200).

3. The battery polarity module of claim 2, wherein, The shell (100) comprises a lower shell (120) and an upper cover (130), the lower shell (120) is provided with a connecting part (121) used for detachably connecting the upper cover (130) with the lower shell (120).

4. The battery polarity module of claim 3, wherein, The upper cover (130) is provided with a clamping interface (131), and the connecting part (121) is used for clamping or unclamping the clamping interface (131) to detachably connect the upper cover (130) with the lower shell (120).

5. The battery polarity module of claim 1, wherein, The application further comprises a main positive relay (500), and the lower shell (120) is provided with a first plug-in groove (123), and the main positive relay (500) is used for being plugged into the first plug-in groove (123).

6. The battery polarity module of any one of claims 1-5, wherein, The application further comprises a pre-charge resistor (600) used for being plugged into the first plug-in groove (123).

7. The battery polarity module of claim 6, wherein, The main positive relay (500) is provided with a first power connection rod (510), the shell (100) and the conductive part (200) are both provided with a first power connection hole (250), the first power connection rod (510) is arranged in the first power connection hole (250) of the shell (100), and the first power connection rod (510) is connected with the first power connection hole (250) of the conductive part (200) to electrically connect the main positive relay (500) with the conductive part (200).

8. The battery polarity module of claim 6, wherein, The pre-charge resistor (600) is provided with a second power connection rod (610), the shell (100) and the conductive part (200) are both provided with a second power connection hole (260), the second power connection rod (610) is arranged in the second power connection hole (260) of the shell (100), and the second power connection rod (610) is connected with the second power connection hole (260) of the conductive part (200) to electrically connect the pre-charge resistor (600) with the conductive part (200).

9. The battery polarity module of claim 8, wherein, ​ 10. The battery polarity module of claim 9, wherein, ​ 11. The battery polarity module of claim 9, wherein, ​ 12. The battery polarity module of claim 6, wherein, The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120).

13. The battery polarity module of claim 12, wherein, The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120).

14. The battery polarity module of any of claims 9-11, wherein, The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120).

15. A battery pack, characterized by The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120).

16. An electrical device, characterized by The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged in the second plug slot (124) in the lower shell (120). The main fuse (700) is arranged

Images